| Entries |
| Document | Title | Date |
|---|
| 20080202158 | System And Method For Cooling A Bog Stream - A system for cooling a boil-off gas (BOG) stream prior to compression in a boil-off reliquefaction plant, comprising a line ( | 08-28-2008 |
| 20080264099 | DOMESTIC GAS PRODUCT FROM AN LNG FACILITY - An LNG facility capable of producing a domestic gas product from an intermediate stream in the LNG facility. Withdrawing the domestic gas product from a location within the LNG facility can minimize operational disturbances typically caused by extracting a domestic gas product stream upstream of the liquefaction portion of the LNG facility. In addition, withdrawing the domestic gas product from this location can provide increased control of light contaminants (e.g., nitrogen) in open-loop refrigeration cycles and can ultimately result in incremental LNG and/or NGL production. | 10-30-2008 |
| 20080289360 | Refrigerant Circuit - The present invention relates to a refrigerant circuit ( | 11-27-2008 |
| 20080307826 | Apparatus and method for optimizing a natural gas liquefaction train having a nitrogen cooling loop - A natural gas liquefaction train includes a nitrogen cooling loop. A controller is provided for controlling one or more controlled variables by adjusting one or more manipulated variables. The one or more manipulated variables may include a nitrogen flow associated with the nitrogen cooling loop in the natural gas liquefaction train. The controller could adjust the nitrogen flow by adjusting operation of a compressor associated with the nitrogen cooling loop. The one or more controlled variables may include a rundown temperature of liquefied natural gas exiting the nitrogen loop and/or a calorific or heating value of the liquefied natural gas exiting the nitrogen loop. A second controller could control other aspects of the natural gas liquefaction train, such as by controlling a mass flow rate of a feed gas in the natural gas liquefaction train. | 12-18-2008 |
| 20090019887 | METHOD OF CONDITIONING NATURAL GAS IN PREPARATION FOR STORAGE - A method of conditioning natural gas in preparation for storage, involves taking an existing stream of continuously flowing natural gas flowing through a gas line ( | 01-22-2009 |
| 20090031754 | METHOD AND APPARATUS TO IMPROVE OVERALL EFFICIENCY OF LNG LIQUEFACTION SYSTEMS - For a LNG (liquid natural gas) liquefaction system or plant that includes a gas turbine fueled by vaporized LNG and which receives compressed air, via an air compressor, as an input, a means and method to use relatively colder LNG vapor, in a heat exchanger disposed before the inlet to the turbine's air compressor, to remove heat from the air being inputted to the air compressor to improve overall efficiency of the systems or plants. | 02-05-2009 |
| 20090095017 | FLOATING HYDROCARBON TREATING PLANT - A floating hydrocarbon treating plant containing a vessel having a hull and a deck and having tanks located below the deck for storing hydrocarbons, and a plant for treating hydrocarbons located at the deck of the vessel is provided. The plant for treating hydrocarbons includes spaced-apart modules, wherein each module has related plant equipment mounted on a module floor, and the modules rest on closed support girders that extend under the module in a direction perpendicular to the edge of the deck, and wherein the module floor is secured to one of the closed support girders. | 04-16-2009 |
| 20090126400 | Natural Gas Supply Method and Apparatus - A primary stream of boiled-off natural gas taken from the ullage space ( | 05-21-2009 |
| 20090126401 | DUAL-REFLUXED HEAVIES REMOVAL COLUMN IN AN LNG FACILITY - A liquefied natural gas facility employing a heavies removal column having multiple reflux streams. The reflux streams can have different compositions and can be operable to reduce the critical pressure of the fluids within the heavies removal column in order to permit the column to operate at higher pressures without adversely affecting the horsepower requirements of plant compressor/driver systems. | 05-21-2009 |
| 20090205365 | METHOD AND APPARATUS FOR LIQUEFYING A NATURAL GAS STREAM - The present invention provides a method of natural gas, the method at least comprising the steps of: (a) providing a natural gas stream ( | 08-20-2009 |
| 20090249828 | LNG SYSTEM WITH ENHANCED PRE-COOLING CYCLE - A natural gas liquefaction system employing a high pressure pre-cooling refrigeration cycle. The natural gas liquefaction system can be advantageously employed in cold weather regions and/or in regions that exhibit large variations in ambient temperature. | 10-08-2009 |
| 20100000251 | METHOD AND APPARATUS FOR LIQUEFYING A HYDROCARBON STREAM - The present invention provides a method of liquefying a hydrocarbon stream such as natural gas, the method at least comprising the steps of: (a) providing a hydrocarbon stream ( | 01-07-2010 |
| 20100000252 | COMPREHENSIVE SYSTEM FOR THE STORAGE AND TRANSPORTATION OF NATURAL GAS IN A LIGHT HYDROCARBON LIQUID MEDIUM - This invention provides a means of loading, processing and conditioning raw production gas, production of CGL, storage, transport, and delivery of pipeline quality natural gas or fractionated products to market. The CGL transport vessel utilizes a pipe based containment system to hold more densely packed constituents of natural gas held within a light hydrocarbon solvent than it is possible to attain for natural gas alone under such conditions. The containment system is supported by process systems for loading and transporting the natural gas as a liquid and unloading the CGL from the containment system and then offloading it in the gaseous state. The system can also be utilized for the selective storage and transport of NGLs to provide a total service package for the movement of natural gas and associated gas production. The mode of storage is suited for both marine and land transportation and configured in modular form to suit a particular application and/or scale of operation. | 01-07-2010 |
| 20100058801 | SYSTEM FOR ENHANCED GAS TURBINE PERFORMANCE IN A LIQUEFIED NATURAL GAS FACILITY - A system for liquefying natural gas that includes a process and apparatus for enhancing the performance of one or more gas turbines. Gas turbine power output can be stabilized or even enhanced using the interstage cooling system configured according to one or more embodiments of the present invention. In one embodiment, partially compressed air from a lower compression stage of a gas turbine is cooled via indirect heat exchange with a primary coolant before being returned to a higher compression stage of the same gas turbine. Optionally, the interstage cooling system can employ one or more secondary coolants to remove the rejected heat from the primary coolant system. | 03-11-2010 |
| 20100083696 | METHOD FOR PURIFYING A GAS MIXTURE CONTAINING ACID GASES - A method for treating a gas mixture containing acid gases is provided, comprising: contacting the gas mixture with an absorbing solution, by means of which a de-acidified gas mixture and an absorbing solution loaded with acid gases may be obtained; and regenerating the absorbing solution loaded with acid gases;
| 04-08-2010 |
| 20100132405 | Method and system for producing LNG - A method is described for production of LNG from an incoming feed gas ( | 06-03-2010 |
| 20100162753 | METHOD AND APPARATUS FOR TREATING A HYDROCARBON STREAM - The present invention relates to a method of treating a hydrocarbon stream, the method at least comprising the steps of: supplying a partly condensed feed stream ( | 07-01-2010 |
| 20100186446 | APPARATUS FOR THE LIQUEFACTION OF A GAS AND METHODS RELATING TO SAME - Apparatuses and methods are provided for producing liquefied gas, such as liquefied natural gas. In one embodiment, a liquefaction plant may be coupled to a source of unpurified natural gas, such as a natural gas pipeline at a pressure letdown station. A portion of the gas is drawn off and split into a process stream and a cooling stream. The cooling stream may sequentially pass through a compressor and an expander. The process stream may also pass through a compressor. The compressed process stream is cooled, such as by the expanded cooling stream. The cooled, compressed process stream is expanded to liquefy the natural gas. A gas-liquid separator separates the vapor from the liquid natural gas. A portion of the liquid gas may be used for additional cooling. Gas produced within the system may be recompressed for reintroduction into a receiving line. | 07-29-2010 |
| 20100212354 | METHOD OF DISPOSING OF CARBON DIOXIDE - A process and also an arrangement for disposing of one of more carbon dioxide-containing fractions which occur at one or more sites of a fractionation and/or liquefaction process such as, for example, a natural gas liquefaction process. The carbon dioxide-containing fraction(s) is or are subjected to a purification (B) and/or liquefaction (C) and subsequently sequestered (D). Preferably, use is made of at least one substream ( | 08-26-2010 |
| 20100223950 | NITROGEN REMOVAL WITH ISO-PRESSURE OPEN REFRIGERATION NATURAL GAS LIQUIDS RECOVERY - A process for recovery of natural gas liquids is disclosed, the process including: fractionating a gas stream comprising nitrogen, methane, ethane, and propane and other C | 09-09-2010 |
| 20100236284 | Preserving liquids in cryogenic processes - A trap system for cryogenic environments, which brings a gas to a body of the same material in liquid form, allows the liquefied material in the gas bearing tube to pass through a submerged trap combining the newly condensed liquid with that in the reserve. With this apparatus, for example, pure cold Nitrogen gas can be condensed and recycled in a system requiring cryogenic liquid Nitrogen to start the process. This trap system can also be applied to other gaseous materials stored cooled beyond the condensing temperatures. The trap system brings the newly condensed material into the vessel of already condensed material. The gas that has not condensed into liquid, in the case of Liquid Nitrogen, will release into the atmosphere. It is expected that all the gas of the other material will liquefy and be part of the stored liquid because it is stored below its liquefaction temperature—here using Liquid Nitrogen chambers surrounding the vessel of the liquefied material. Also included are means to maintain a clean reservoir of cryogenic liquids providing means to remove debris on the surface, floating within the liquid and at the bottom of the reservoir. And yet more, keeping the liquid form of material is protected from the gas state material to prevent more rapid evaporation. | 09-23-2010 |
| 20100257895 | METHOD FOR THE UNINTERRUPTED OPERATION OF A GAS LIQUEFACTION SYSTEM - A method for the uninterrupted operation of a gas liquefaction system is provided, wherein the operation is continuously monitored for at least those users of the refrigerant compressor component which represent a two-digit percentage of the total load on the refrigerant compressor component. A total instantaneously available negative load reserve is calculated, and at least one predetermined turbine is switched off when the load reserve reachable via a frequency regulation of the one or more refrigerant compressors is lower than the energy demand of the largest of the refrigerant compressors and either a refrigerant compressor fails or a speed of frequency change for the power supply network for the gas liquefaction system exceeds a present threshold. | 10-14-2010 |
| 20100307192 | CONDENSATION PROCESS AND CONTAINMENT VESSEL - A condenser and a containment vessel adapted to efficiently condense a gas out of a mixture of condensing and non-condensing gases. In condensers, the fraction of gas within a condenser made up of non-condensing gases can be significantly reduced by withdrawing gas from localised regions of relatively low temperature where the mass fraction of non-condensing gases will be relatively high. In containment vessels, pressures can be reduced by providing a large surface area of the liquid into which the condensing gas condenses in a relatively cool region of the containment vessel. Both these effects result from an appreciation of the manner in which non-condensing gases tend to accumulate in regions which are relatively cold. | 12-09-2010 |
| 20100326132 | PROCESS AND APPRATUS FOR PRODUCING GAS HYDRATE - A process is provided which includes: bringing a natural gas, e.g., methane gas or propane gas, or a mixture of these gases into gas-liquid contact with raw-material water to form a gas hydrate; compression-molding the gas hydrate into pellets; and cooling/depressurizing the pellets. Also provided is an apparatus for use in the process. In the cooling/depressurizing step 4, molded gas hydrate masses h | 12-30-2010 |
| 20110094261 | NATURAL GAS LIQUEFACTION CORE MODULES, PLANTS INCLUDING SAME AND RELATED METHODS - A method of natural gas liquefaction may include liquefying natural gas from a first natural gas source with a first core module, and liquefying natural gas from at least a second natural gas source having a gas property different than a gas property of the first natural gas source with at least a second core module substantially identical to the first core module. Additionally, a method of designing a natural gas liquefaction plant may include utilizing a preconfigured core module design for a core module configured to receive source gas at site-independent predetermined input conditions, expel tail gas at site-independent predetermined outlet conditions, and liquefy natural gas. Furthermore, a method of distributing liquid natural gas may include providing a plurality of natural gas liquefaction plants comprising substantially identical core modules to a plurality of gaseous natural gas source locations. Finally, a modular natural gas liquefaction plant may include a preconfigured core module, and site-specific inlet and outlet modules. | 04-28-2011 |
| 20110138851 | PROCESS FOR PRODUCING PURIFIED NATURAL GAS FROM NATURAL GAS COMPRISING WATER AND CARBON DIOXIDE - The invention provides a process for producing purified natural gas from feed natural gas comprising water and carbon dioxide, the process comprising the steps of: (a) removing water from the feed natural gas to obtain natural gas depleted in water and comprising carbon dioxide; (b) contacting the natural gas obtained in step (a) with solid sorbent comprising a metal organic framework to remove at least part of the carbon dioxide, thereby obtaining the purified natural gas. | 06-16-2011 |
| 20110174016 | APPARATUS & PROCESS FOR TREATING OFFSHORE NATURAL GAS - A process for treating offshore natural gas includes processing the natural gas on an off-shore processing facility by, (i) liquefying and fractionating the natural gas to generate a liquefied natural gas stream and a higher hydrocarbon stream, (ii) vapourising at least a portion of the higher hydrocarbon stream, (iii) passing the vapourised higher hydrocarbon stream and steam over a steam reforming catalyst to generate a reformed gas mixture comprising methane, steam, carbon oxides and hydrogen, (iv) passing the reformed gas mixture over a methanation catalyst to generate a methane rich gas, and (v) combining the methane-rich gas with the natural gas prior to the liquefaction step. | 07-21-2011 |
| 20110226007 | FLOATING SYSTEM FOR LIQUEFYING NATURAL GAS - A floating system for liquefying natural gas comprising a vessel provided with a plant for liquefying natural gas having an inlet for natural gas and an outlet for liquefied natural gas, a feed supply system for supplying natural gas to the inlet of the plant, one or more storage tanks for storing liquefied natural gas, and an off-loading system for transporting liquefied natural gas between the storage tank(s) and a tanker, which floating system further comprises a vaporization system having an inlet for liquefied gas and an outlet for vapour. | 09-22-2011 |
| 20110239699 | TURBOCOMPRESSOR TRAIN AND METHOD FOR OPERATION THEREOF AND NATURAL GAS LIQUEFACTION PLANT HAVING THE TURBOCOMPRESSOR TRAIN - A turbo compressor train is provided. The turbo compressor train includes a turbo compressor unit and a drive assembly for driving the turbo compressor unit. The drive unit has a gas turbine and a generator and a steam turbine. The steam turbine may be coupled together with the generator to the turbo compressor unit and the gas turbine by means of a coupling device. The coupling device has an overrun coupling and a coupling exciter with which the overrun coupling may be taken from a disengaged condition to an active condition by engaging of the overrun coupling at synchronous speed of the gas turbine and the steam turbine and if the overrun coupling is engaged, disengages upon a speed increase to the steam turbine and generator so that the generator may be driven by the steam turbine at a higher speed than the turbocompressor unit by the gas turbine. | 10-06-2011 |
| 20110259044 | METHOD AND APPARATUS FOR PRODUCING LIQUEFIED NATURAL GAS - Systems and methods for producing liquid natural gas from heat exchange with liquid nitrogen or air is provided. The produced liquid natural gas may be used as vehicle fuel. After heat exchange, the vaporized liquid nitrogen or air may be routed in the system to regenerate a heat exchange unit and/or a natural gas pretreatment unit. After assisting with the regeneration, the vaporized nitrogen or air may be safely vented to atmosphere. In one embodiment, a system for liquefying natural gas using a refrigerant includes a first treating unit configured to remove a contaminant from the natural gas; a first exchanger unit for liquefying the natural gas using the refrigerant; a second exchanger unit configured to receive the refrigerant from the first exchanger unit, wherein the first exchanger unit and the second exchanger unit operate on alternating cycles; a second treating unit configured to receive the refrigerant from the second exchanger unit; and a storage unit for the receiving the liquid natural gas. | 10-27-2011 |
| 20110265511 | NATURAL GAS LIQUEFACTION METHOD WITH ENHANCED PROPANE RECOVERY - The liquefaction method provides fractionation of the natural gas with ethane recycle in order to enhance propane recovery and to increase the critical pressure of the gas to be liquefied. | 11-03-2011 |
| 20110277496 | Method of purifying hydrocarbons and regeneration of adsorbents used therein - An improved method is provided for removing contaminants from a hydrocarbon stream, such as a stream of raw natural gas. The contaminated hydrocarbon stream is passed through a first adsorbent bed containing molecular sieves to adsorb contaminants on the molecular sieves, thereby removing at least some of the contaminants from the hydrocarbon stream. The contaminated hydrocarbon stream may optionally be passed through a second adsorbent bed containing a desiccant material other than molecular sieves. The molecular sieves are regenerated using a wet regeneration process in which both the water content and temperature of the regeneration fluid stream are staged. The molecular sieves and the desiccant material can also be regenerated by contacting the desiccant material with a regeneration fluid stream comprising water to adsorb at least a portion of the water onto the desiccant material, thereby forming a regeneration fluid stream that is at least partially dried and in contact with a desiccant material that is at least partially hydrated. The hydrated desiccant material is heated to release adsorbed water into the partially dried regeneration fluid stream while such regeneration fluid stream is passed through the molecular sieves to desorb and remove at least a portion of the contaminants adsorbed on the molecular sieves. A method for producing liquefied natural gas employing such improved method is also disclosed. | 11-17-2011 |
| 20110277497 | METHOD AND APPARATUS FOR PROCESSING HYDROCARBON LIQUEFIED GAS - A method and apparatus for processing natural gas composed of various hydrocarbon components for transportation of the natural gas to a demand side without separation of the hydrocarbon components, such that the natural gas can be used by consumers after being separated into the hydrocarbon components according to the needs of the demand side. The apparatus includes a storage tank and a hydrocarbon liquefied gas mixture accommodated in the storage tank. The mixture has hydrocarbon components composed of methane, ethane, propane and butane, and is produced by liquefying raw natural gas without changing the relative ratio of methane, ethane, propane and butane in the raw natural gas immediately after extraction from the gas well. The method and apparatus can be applied to floating marine structures. | 11-17-2011 |
| 20120006053 | VORTEX-INDUCED VIBRATION (VIV) SUPPRESSION OF RISER ARRAYS - A system comprising an array of structures in a flowing fluid environment, the array comprising at least 3 structures; and vortex induced vibration suppression devices on at least 2 of the structures. | 01-12-2012 |
| 20120017639 | METHODS AND SYSTEMS FOR STORING AND TRANSPORTING GASES - A method and system of storing and transporting valuable gases comprising mixing the gases with liquid natural gas to form a mixture. The mixture is transported in vessel configured for cooling the mixture by boiling a portion of liquid natural gas. The transportation vessel is further configured to be cooled in the absence of valuable gases by a remaining portion of liquid natural gas. The method further comprises recycling liquid natural gas through the vessel for pre-cooling the vessel prior to loading the mixture of valuable gases and liquid natural gas. | 01-26-2012 |
| 20120042689 | PROCESS FOR PURIFYING NATURAL GAS AND REGENERATING ONE OR MORE ADSORBERS - One exemplary embodiment can be a process for purifying a natural gas by using first and second adsorbers. The process may include passing a feed including the natural gas through the first adsorber to obtain a purified natural gas product, regenerating the second adsorber in a heating stage, and regenerating the second adsorber in a cooling stage. The heating stage may include separating a portion of the feed comprised in a regeneration gas, passing the regeneration gas to a dryer for removing water, heating the regeneration gas with a heater after exiting the dryer, and passing the regeneration gas to the second adsorber to regenerate the second adsorber. The cooling stage may include expelling at initiation of cooling at least a part of a fluid present in the second adsorber to the dryer to desorb water from a molecular sieve in the dryer, and cooling the second adsorber by circulating the regeneration gas bypassing the heater. | 02-23-2012 |
| 20120042690 | LNG FACILITY WITH INTEGRATED NGL RECOVERY FOR ENHANCED LIQUID RECOVERY AND PRODUCT FLEXIBILITY - Process for efficiently operating a natural gas liquefaction system with integrated heavies removal/natural gas liquids recovery to produce liquefied natural gas (LNG) and/or natural gas liquids (NGL) products with varying characteristics, such as, for example higher heating value (HHV) and/or propane content. Resulting LNG and/or NGL products are capable of meeting the significantly different specifications of two or more markets. | 02-23-2012 |
| 20120060552 | METHOD AND APPARATUS FOR COOLING A GASEOUS HYDROCARBON STREAM - A gaseous hydrocarbon stream ( | 03-15-2012 |
| 20120067079 | NITROGEN REJECTION AND LIQUIFIER SYSTEM FOR LIQUIFIED NATURAL GAS PRODUCTION - A method for recovering liquefied natural gas from a gas mixture containing natural gas and impurities by subjecting the natural gas to a series of steps beginning with feeding a natural gas stream containing impurities to a nitrogen rejection unit; feeding the purified natural gas stream to a liquefier heat exchanger; expanding the liquefied natural gas and feeding the expanded liquefied natural gas to a flash vessel; flashing the liquid natural gas and separating the liquefied natural gas from the flash gas; and feeding the liquefied natural gas to storage and the flash gas to the nitrogen rejection unit. | 03-22-2012 |
| 20120079849 | REMOVAL OF HYDROGEN - The invention relates to a method for liquefying a hydrocarbon-rich fraction ( | 04-05-2012 |
| 20120079850 | Controlling Liquefaction of Natrual Gas - A gas liquefaction process, especially for producing LNG, maintains product flow rate and temperature by controlling the refrigeration so that variation to reduce any difference between actual and required product temperatures is initiated before variation of the product flow rate to reduce any difference between actual and required flow rates. | 04-05-2012 |
| 20120118007 | PROCESS OF HEAT INTEGRATING FEED AND COMPRESSOR DISCHARGE STREAMS WITH HEAVIES REMOVAL SYSTEM IN A LIQUEFIED NATURAL GAS FACILITY - An LNG facility employing an optimized heavies removal system. The heavies removal system can comprise at least one distillation column and at least two separate heat exchangers. Feed and/or compressor discharge streams can be used to provide heat duty to the heat exchangers in a thermally efficient manner to facilitate the removal of heavy components from an overall LNG facility. | 05-17-2012 |
| 20120167617 | METHOD FOR TREATING A MULTI-PHASE HYDROCARBON STREAM AND AN APPARATUS THEREFOR - A multi-phase hydrocarbon stream ( | 07-05-2012 |
| 20120240617 | SOUR GAS TREATMENT PROCESS - The disclosure relates to a process for treating a gas mixture containing carbon dioxide and hydrogen sulphide, including the following steps: deacidificating the gas mixture by bringing the gas mixture into contact with a first lean absorbent solution stream, delivering a deacidified gas mixture, and a first rich absorbent solution stream; regenerating the first rich absorbent solution stream, delivering the first lean absorbent solution stream and a sour gas stream; distillating the sour gas stream, delivering a first carbon-dioxide-rich stream and a hydrogen-sulphide-rich stream; purifying the first carbon-dioxide-rich stream by bringing the first carbon-dioxide-rich stream into contact with a second lean absorbent solution stream, delivering a second carbon-dioxide-rich stream and a second rich absorbent solution stream, the molar concentration of carbon dioxide in the second carbon-dioxide-rich stream being greater than the molar concentration of carbon dioxide in the first carbon-dioxide-rich stream. The disclosure also relates to an installation designed to implement this process. | 09-27-2012 |
| 20120240618 | APPARATUS AND METHOD FOR COOLING AND LIQUEFYING A FLUID - A fluid is cooled and liquefied in an apparatus with a heat exchanger ( | 09-27-2012 |
| 20130036763 | METHOD FOR START-UP OF A LIQUEFIED NATURAL GAS (LNG) PLANT - A method for start-up of a liquefied natural gas (LNG) plant, the plant including a liquefaction unit arranged in a flow path of the plant, including removing LNG from a first location in the flow path downstream of the liquefaction unit; vaporizing the removed LNG, or heating the removed LNG so that the removed LNG is transformed to gas phase; and re-admitting the vaporized or transformed LNG to the flow path at a second location upstream of the liquefaction unit. A corresponding LNG plant is also provided. | 02-14-2013 |
| 20130042645 | METHOD FOR TURNDOWN OF A LIQUEFIED NATURAL GAS (LNG) PLANT - A method for turndown of a liquefied natural gas (LNG) plant, the plant including a liquefaction unit arranged in a flow path of the plant, includes removing LNG from a first location in the flow path downstream of the liquefaction unit; vaporizing the removed LNG, or heating the removed LNG so that the removed LNG is transformed to gas phase; and re-admitting the vaporized or transformed LNG to the flow path at a second location upstream of the liquefaction unit. A corresponding LNG plant is also provided. | 02-21-2013 |
| 20130061632 | Integrated NGL Recovery In the Production Of Liquefied Natural Gas - Process for the liquefaction of natural gas and the recovery of components heavier than methane where natural gas is cooled and separated in a first distillation column into an overhead vapor enriched in methane and a bottoms stream enriched in components heavier than methane, where the first distillation column utilizes a liquefied methane-containing reflux stream. This reflux stream may be provided by a condensed portion of the overhead vapor or a portion of totally condensed overhead vapor that is subsequently warmed. The bottoms stream may be separated in one or more additional distillation columns to provide one or more product streams, any of which are partially or totally withdrawn as recovered hydrocarbons. A stream of unrecovered liquid hydrocarbons may be combined with either the condensed portion of the overhead vapor or a portion of totally condensed overhead vapor that is subsequently warmed. | 03-14-2013 |
| 20130086939 | DISTRIBUTED LNG DEVICE - Provided among other things is a distributed LNG device comprising: an insulated collection cavity with an outlet, the collection cavity adapted to collect liquids that condense therein at the outlet; one or more fuel inlet valves adapted for injecting a methane source gas into the collection cavity; one or more exhaust valves adapted for exhausting gas from the collection cavity; and a cryocooler with a cold-head condenser, a cold-head of the condenser adapted to insert into the collection cavity to provide sufficient heat absorption to bring the cavity as filled with methane gas to a temperature effective to condense the methane, wherein the cold-head condenser operates (i) as a reverse Stirling engine and/or (ii) by acoustic energy. | 04-11-2013 |
| 20130098103 | METHOD OF TREATING A HYDROCARBON STREAM COMPRISING METHANE, AND AN APPARATUS THEREFOR - In a method and apparatus for treating a hydrocarbon stream having methane, at least a part of the hydrocarbon stream and a main refrigerant stream are cooled by indirect heat exchanging against a pre-cooling refrigerant. The pre-cooled hydrocarbon stream is passed to a first inlet of an extraction column, and an effluent stream is discharged from the extraction column. The effluent stream and at least a part of the pre-cooled main refrigerant stream are passed to a further heat exchanger, where they are both cooled thereby providing a cooled methane-enriched hydrocarbon stream and at least one cooled main refrigerant stream. The passing of the effluent stream to the further heat exchanger and the passing of the pre-cooled hydrocarbon stream to the first inlet of the extraction column includes indirectly heat exchanging the effluent stream against the pre-cooled hydrocarbon stream. | 04-25-2013 |
| 20130133362 | NATURAL GAS LIQUEFACTION PROCESS - Disclosed herein is a natural gas liquefaction process using a single refrigeration cycle adopting a mixed refrigerant, and therefore having a simple structure and thus a compact system which is easy to operate, and further, after the mixed refrigerant is separated into two refrigerant parts, the two refrigerant parts are not mixed with each other but go through condensing (cooling), expanding, heat-exchanging, and compressing stages individually, and thus, optimal temperature and pressure conditions are applied to each of the separated refrigerant parts to increase efficiency of the liquefaction process. | 05-30-2013 |
| 20130139543 | SYSTEMS AND METHODS FOR INTEGRATED ENERGY STORAGE AND CRYOGENIC CARBON CAPTURE - The systems and methods integrate energy storage with cryogenic carbon capture, providing effective grid management and energy-efficient carbon capture capabilities to power plants. The systems store energy during off-peak demand by using off-peak energy to compress natural gas to form liquefied natural gas (LNG) and storing the LNG for use as a refrigerant. The systems use the stored LNG as a refrigerant in a cryogenic carbon capture (CCC) process to isolate carbon dioxide from light gases in a flue gas. The systems supply energy during peak demand by burning the natural gas warmed by the CCC process to generate power. | 06-06-2013 |
| 20130139544 | LNG Boiloff Gas Recondensation Configurations And Methods - Systems and methods for optimizing the recondensation of boiloff gas in liquid natural gas storage tanks are presented. In especially preferred aspects of the inventive subject matter, BOG from a storage tank is condensed using refrigeration content of a portion of LNG sendout in a direct or indirect manner, and the BOG condensate and LNG sendout portion are combined to form a subcooled stream that is then combined with the balance of the LNG sendout, to be fed to a high pressure pump. Contemplated recondensation operations advantageously occur without using otherwise needed large volume recondensers. Moreover, the condensing and subcooling operations are decoupled from the LNG sendout rate. | 06-06-2013 |
| 20130145794 | "FLEXIBLE LIQUEFIED NATURAL GAS PLANT" - The present techniques are directed to a flexible liquefied natural gas (LNG) plant that may be tied to an external electric grid for importing or exporting electric power. Exemplary embodiments provide a method for producing LNG that includes producing a base load capacity of refrigeration capacity for LNG production from a first compression system. Electricity may be produced from a second compressor string if electricity is needed by an external power grid, or a second amount of refrigeration capacity may be provided by the second compressor string is natural gas feed is available and the external grid does not need power. | 06-13-2013 |
| 20130152627 | Method To Produce Liquefied Natural Gas (LNG) At Midstream Natural Gas Liquids (NGLs) Recovery Plants - A method to recover natural gas liquids (NGLs) from natural gas streams at NGL recovery plants. The present disclosure relates to methods using liquid natural gas (LNG) as an external source of stored cold energy to reduce the energy and improve the operation of NGL distillation columns. More particularly, the present disclosure provides methods to efficiently and economically achieve higher recoveries of natural gas liquids at NGL recovery plants. | 06-20-2013 |
| 20130160486 | POWER AND REGASIFICATION SYSTEM FOR LNG - The present invention provides a power and regasification system based on liquefied natural gas (LNG), comprising a vaporizer by which liquid motive fluid is vaporized, said liquid motive fluid being LNG or a motive fluid liquefied by means of LNG; a turbine for expanding the vaporized motive fluid and producing power; heat exchanger means to which expanded motive fluid vapor is supplied, said heat exchanger means also being supplied with LNG for receiving heat from said expanded fluid vapor, whereby the temperature of the LNG increases as it flows through the heat exchanger means; a conduit through which said motive fluid is supplied from at least the outlet of said heat exchanger to the inlet of said; and a line for transmitting regasified LNG. | 06-27-2013 |
| 20130160487 | LIQUEFYING NATURAL GAS IN A MOTION ENVIRONMENT - Systems and methods for liquefying natural gas in a motion environment, utilizing a core-in-shell type heat exchanger are provided. | 06-27-2013 |
| 20130174603 | Liquefaction Method and System - A method for liquefaction using a closed loop refrigeration system, the method comprising the steps of (a) compressing a gaseous refrigerant stream in at least one compressor; (b) cooling the compressed gaseous refrigerant stream in a first heat exchanger; (c) expanding at least a first portion of the cooled, compressed gaseous refrigerant stream from the first heat exchanger in a first expander to provide a first expanded gaseous refrigerant stream; and (d) cooling and substantially liquefying a feed gas stream to form a substantially liquefied feed gas stream in a second heat exchanger through indirect heat exchange against at least a first portion of the first expanded gaseous refrigerant stream from the first expander, wherein the first expanded gaseous refrigerant stream exiting the first expander is substantially vapor. | 07-11-2013 |
| 20130180282 | Simplified LNG Process - A simplified method for production of a commercial supply liquefied natural gas (LNG) supplied in a pressurized vessel includes taking a supply of natural gas including contaminants from a stranded well or from a pipe line and extracting from the supply gas water vapor and CO2 in a fixed bed absorption system. In a first stage the supply gas is separated into first and second streams where the first stream contains all the cold energy available from the feed stream and sufficient of the contaminants are removed to meet a product specification for the composition of the LNG supply. In a second stage the first stream is liquefied by the available cool energy for commercial pressurized supply container The second stream contains natural gas which is as much as 75% of the feed stream together with substantially all the contaminants and is used as a natural gas supply. | 07-18-2013 |
| 20130199238 | LIQUEFIED NATURAL GAS PLANT WITH ETHYLENE INDEPENDENT HEAVIES RECOVERY SYSTEM - This invention relates to a process and apparatus for liquefying natural gas. In another aspect, the invention concerns a liquefied natural gas (LNG) facility employing an ethylene independent heavies recovery system. | 08-08-2013 |
| 20130263623 | NATURAL GAS LIQUEFACTION PROCESS - Disclosed herein is a natural gas liquefaction process of pre-cooling natural gas using a closed loop pre-cooling cycle and liquefying the pre-cooled natural gas using a closed loop liquefying cycle, wherein the closed loop pre-cooling cycle includes first and second pre-cooling cycles in parallel for pre-cooling supplied natural gases together in the same first heat exchange region through the respective pure refrigerants, and the closed loop liquefying cycle includes at least one liquefying cycle for liquefying the pre-cooled natural gas through a mixed refrigerant, the first and second pre-cooling cycles being a closed circuit cooling cycle. | 10-10-2013 |
| 20130263624 | METHOD AND SYSTEM FOR THE SMALL-SCALE PRODUCTION OF LIQUIFIED NATURAL GAS (LNG) AND COLD COMPRESSED NATURAL GAS (CCNG) FROM LOW-PRESSURE NATURAL GAS - A system for the production of LNG from low-pressure feed gas sources, at small production scales and at lower energy input costs. A system for the small-scale production of cold compressed natural gas (CCNG). A method of dispensing natural gas from stored CCNG, comprising: dispensing CCNG from a CCNG storage tank; pumping the CCNG by a cryogenic liquid pump to a pressure suitable for compressed natural gas dispensing and storage in on-vehicle compressed natural gas storage tanks; recovering cold from the CCNG by heat exchange with natural gas feeding the natural gas production plant to replace dispensed product. A system for the storage, transport, and dispensing of natural gas, comprising: means for handling natural gas in a CCNG state where the natural gas is a non-liquid, but is dense-enough to allow for pumping to pressure by a cryogenic liquid pump. | 10-10-2013 |
| 20130327085 | SEMI-CLOSED LOOP LNG PROCESS - A semi-closed loop system for producing liquefied natural gas (LNG) that combines certain advantages of closed-loop systems with certain advantages of open-loop systems to provide a more efficient and effective hybrid system. In the semi-closed loop system, the final methane refrigeration cycle provides significant cooling of the natural gas stream via indirect heat transfer, as opposed to expansion-type cooling. A minor portion of the LNG product from the methane refrigeration cycle is used as make-up refrigerant in the methane refrigeration cycle. A pressurized portion of the refrigerant from the methane refrigeration cycle is employed as fuel gas. Excess refrigerant from the methane refrigeration cycle can be recombined with the processed natural gas stream, rather than flared. | 12-12-2013 |
| 20130333415 | Natural Gas Liquefaction Process to Extend Lifetime of Gas Wells - A variable speed liquid LNG expander (X1) and a variable speed two-phase LNG expander (X2) in line, downstream from X1. The rotational speed of both expanders can be controlled and changed independent from each other. The speed of expander X1 and expander X2 is determined in such way that the amount of liquid LNG downstream from the PHS compared to the feed gas supply is maximized and the amount of vapor and boil-off downstream of X2 is minimized. | 12-19-2013 |
| 20130333416 | METHOD OF RECOVERY OF NATURAL GAS LIQUIDS FROM NATURAL GAS AT NGLS RECOVERY PLANTS - A method to recover natural gas liquids from natural gas streams at NGL recovery plants. The present invention relates to methods using liquid natural gas (LNG) as an external source of stored cold energy to reduce the energy and improve the operation of NGL distillation columns. More particularly, the present invention provides methods to efficiently and economically achieve higher recoveries of natural gas liquids at NGL recovery plants. | 12-19-2013 |
| 20130340473 | METHOD FOR PRODUCING A C3+ HYDROCARBON-RICH FRACTION AND A METHANE- AND ETHANE-RICH STREAM FROM A HYDROCARBON-RICH FEED STREAM, AND RELATED FACILITY - The method according to the invention comprises the separation of a feed stream ( | 12-26-2013 |
| 20130340474 | FUEL SUPPLY METHOD FOR HIGH-PRESSURE NATURAL GAS INJECTION ENGINE - Provided is a fuel supply method for a marine structure using a high-pressure natural gas injection engine. BOG stored in a stored in the storage tank is compressed to a pressure of 12 to 45 bara (absolute pressure) and then reliquefied. A reliquefaction apparatus includes a cold box configured to exchange heat between a refrigerant and the BOG, a compression unit configured to compress the refrigerant heated by the cold box, an expansion unit configured to expand the compressed refrigerant to drop the temperature thereof, and a plurality of gas-liquid refrigerant separators configured to separate the refrigerant into a gaseous refrigerant and a liquid refrigerant. A gaseous refrigerant and a liquid refrigerant separated by the gas-liquid refrigerant separator disposed at an upstream side are again mixed and supplied to the gas-liquid refrigerant separator disposed at the most downstream among the plurality of gas-liquid refrigerant separators. | 12-26-2013 |
| 20140053599 | Modular LNG Production Facility - A liquefied natural gas production facility and a method of designing and constructing a liquefied natural gas production facility are described. The facility includes space-apart modules for installation at a production location to form a production train including a major axis and a minor axis, each module including a module base for mounting a plurality of plant equipment associated with a selected function assigned to the module, the module base including a major axis and a minor axis. Heat exchangers are arranged to run parallel to the major axis of the production train to form a heat exchanger bank including a major axis and a minor axis, where the major axis of the bank is parallel to the major axis of the train. A subset of the plurality of heat exchangers is arranged on a first level vertically offset from the base of at least one module. | 02-27-2014 |
| 20140053600 | SYSTEM FOR SUPPLYING FUEL TO HIGH-PRESSURE NATURAL GAS INJECTION ENGINE HAVING EXCESS EVAPORATION GAS CONSUMPTION MEANS - Provided is a fuel supply system for a high-pressure natural gas injection engine. The fuel supply system includes: a BOG compression unit configured to receive BOG, which is generated in a storage tank, from the storage tank and compress the received BOG to a pressure of 12 to 45 bara; a reliquefaction apparatus configured to receive and liquefy the BOG compressed by the BOG compression unit; a high-pressure pump configured to compress the BOG liquefied by the reliquefaction apparatus; a high-pressure gasifier configured to gasify the BOG compressed by the high-pressure pump and supply the gasified BOG to the high-pressure natural gas injection engine; and an excess BOG consumption unit configured to consume excess BOG corresponding to a difference between an amount of BOG generated in the storage tank and an amount of BOG required as fuel for the high-pressure natural gas injection engine. | 02-27-2014 |
| 20140060110 | FUEL SUPPLY SYSTEM FOR MARINE STRUCTURE HAVING RELIQUEFACTION APPARATUS AND HIGH-PRESSURE NATURAL GAS INJECTION ENGINE - Provided is a fuel supply system for a marine structure. The fuel supply system includes a BOG compression unit configured to receive and compress BOG generated in a storage tank, a reliquefaction apparatus configured to receive and liquefy the BOG compressed by the BOG compression unit, a high-pressure pump configured to compress the liquefied BOG generated by the reliquefaction apparatus, and a high-pressure gasifier configured to gasify the liquefied BOG compressed by the high-pressure pump. The fuel supply system includes a recondenser installed at an upstream side of the high-pressure pump and configured to recondense a portion or all of the generated BOG by using liquefied gas received from the storage tank. The BOG compression unit compresses BOG to a pressure of about 12 to 45 bara such that the BOG is liquefied under the compression pressure of the BOG compression unit. | 03-06-2014 |
| 20140060111 | PROCESS FOR LIQUEFYING A HYDROCARBON-RICH FRACTION - Described herein is a process for liquefying a hydrocarbon-rich fraction, in particular natural gas, is described, in which
| 03-06-2014 |
| 20140083132 | PROCESS FOR LIQUEFACTION OF NATURAL GAS - A process comprising: cooling natural gas with a heat exchanger and a first expander. The heat exchanger cools the feed natural gas to temperature higher than the outlet temperature of the expander, reheating the expander outlet stream in a first cold passage of the heat exchanger to slightly below the temperature of the feed natural gas to the heat exchanger, passing the cold outlet stream from the heat exchanger into a second expander wherein it is partly liquefied, separating the outlet stream of second expander into liquid and vapour fractions, collecting the liquid fraction for use as LNG product, reheating the vapour fraction in a second cold side passage of the heat exchanger to substantially the same temperature as the temperature of the feed natural gas to the heat exchanger, recycling the reheated vapour fraction partly as feed to the first expander and partly as feed to the heat exchanger. | 03-27-2014 |
| 20140116084 | Method for Liquefying Natural Gas with a Mixture of Coolant Gas - A method for liquefying a natural gas primarily including methane, preferably at least 85% of methane, the other components essentially including nitrogen and C2-C4 alkanes, in which the natural gas to be liquefied is liquefied by circulating at a pressure P0 no lower than the atmospheric pressure (Patm), P0 preferably being higher than the atmospheric pressure, in at least one cryogenic heat-exchanger (EC | 05-01-2014 |
| 20140123699 | METHOD OF COOLING BOIL OFF GAS AND AN APPARATUS THEREFOR - The disclosure relates to a method and apparatus for cooling, preferably liquefying a boil off gas (BOG) stream from a liquefied cargo in a floating transportation vessel, said liquefied cargo having a boiling point of greater than −110° C. at 1 atmosphere, said method comprising at least the steps of: -compressing a boil off gas stream ( | 05-08-2014 |
| 20140130541 | Nitrogen Removal With ISO-Pressure Open Refrigeration Natural Gas Liquids Recovery - A process for recovery of natural gas liquids is disclosed, the process including: fractionating a gas stream comprising nitrogen, methane, ethane, and propane and other C | 05-15-2014 |
| 20140150491 | USE OF LOW GLOBAL-WARMING POTENTIAL, LOW OZONE DEPLETION POTENTIAL, LOW COMBUSTIBILITY HYDROFLUORO-OLEFIN, XENON OR IODO COMPOUND REFRIGERANTS IN LNG PROCESSING - Methods and systems for liquefying natural gas using environmentally-friendly low combustibility refrigerants are provided. Methods of liquefaction include cooling a fluid in an LNG facility via indirect heat exchange with an environmentally-friendly low combustibility refrigerant selected from the group consisting of: a fluorinated olefin, xenon, any derivative thereof, and any combination thereof. | 06-05-2014 |
| 20140157823 | SYSTEMS AND METHODS FOR DISTRIBUTED PRODUCTION OF LIQUIFIED NATURAL GAS - This disclosure teaches systems and methods for distributed production of liquefied natural gas by utilizing refrigeration to reach the condensation of natural gas, removing of compression heat loads, sensible heat loads, and latent heat at ambient temperatures utilizes the Stirling cycle, both refrigeration and thermal heating processes, for enabling cryogenic refrigeration and the portable production of LNG. Generally, the natural gas may be supplied from existing or nearby pipelines and the LNG production system itself may be powered by electric motors or internal combustion engines. The refrigeration machine/LNG production system may be installed at, within or nearby to existing or new construction gas stations for refueling of all classes of motorized vehicles. Additional embodiments include the refrigeration machine installed into standard over-seas containers for LNG import or export, as well as any other portable platform for distributed LNG production. | 06-12-2014 |
| 20140208797 | Natural Gas Liquefaction Process - A gas processing facility for the liquefaction of a natural gas feed stream is provided. The facility comprises a gas separation unit having at least one fractionation vessel. The gas separation unit employs adsorbent beds for adsorptive kinetic separation. The adsorbent beds release a methane-rich gas feed stream. The facility also includes a high-pressure expander cycle refrigeration system. The refrigeration system compresses the methane-rich gas feed stream to a pressure greater than about 1,000 psia. The refrigeration system also chills the methane-rich gas feed stream in one or more coolers, and then expands the chilled gas feed stream to form a liquefied product stream. Processes for liquefying a natural gas feed stream using AKS and a high-pressure expander cycle refrigeration system are also provided herein. Such processes allow for the formation of LNG using a facility having less weight than conventional facilities. | 07-31-2014 |
| 20140245779 | Regasification Plant - Methods and system are provided for regasifying liquefied natural gas (LNG). An exemplary method disclosed includes flowing at least a portion of an LNG stream through an air separation unit (ASU) to form at least a portion of a natural gas (NG) stream. Heat is removed from an airflow in the ASU to separate an oxygen stream from the airflow. The oxygen stream and a fuel stream are combusted in a power plant. | 09-04-2014 |
| 20140260417 | MIXED-REFLUX FOR HEAVIES REMOVAL IN LNG PROCESSING - Systems and methods for removing heavy hydrocarbons are provided. Methods for liquefying a natural gas stream include: (a) cooling at least a portion of the natural gas stream in an upstream refrigeration cycle of a liquefaction process to produce a cooled natural gas stream; (b) separating via a first distillation column the cooled natural gas stream into a first top fraction and a first bottom fraction, wherein the first fraction does not freeze in a subsequent downstream step of the liquefaction process; (c) separating via a second distillation column the first bottom fraction into a second top fraction and a second bottom fraction, wherein the second top fraction at least a portion of a reflux stream; (d) optionally separating via a third distillation column the second bottom fraction into a third top fraction and a third bottom fraction, wherein the third top fraction forms a portion of the reflux stream; and (e) introducing the reflux stream into the first distillation column. | 09-18-2014 |
| 20140260418 | Method to Maximize LNG Plant Capacity in All Seasons - As described herein, a method and system for operating a liquefied natural gas (LNG) plant are provided. The method and system also provide for domestic natural gas production. In the present methods and systems, substantially all of the natural gas produced from a well or formation is processed to form LNG; a portion of the LNG produced is regasified; and the regasification is utilized to cool the inlet air to the gas turbines in the LNG plant, either directly or indirectly. | 09-18-2014 |
| 20140283548 | SYSTEM AND METHOD FOR LIQUEFYING NATURAL GAS USING SINGLE MIXED REFRIGERANT AS REFRIGERATION MEDIUM - A system and a method for liquefying natural gas using single mixed refrigerant as refrigeration medium are provided. The system comprises a two-stage mixed refrigerant compressor ( | 09-25-2014 |
| 20140311183 | SYSTEM AND METHOD FOR PRODUCING A LIQUEFIED HYDROCARBON STREAM AND METHOD OF OPERATING A COMPRESSOR - At least part of a fluid is compressed in a compressor driven by an electric motor. The compressor has variable inlet guide vanes of which an angle can be adjusted. The electric motor is powered using a power supply network, and a signal representative of a condition of the power supply network is monitored. From the signal, it is automatically determined whether additional load shedding is needed, by comparing the signal to a predetermined criterion. The variable inlet guide vanes angle is automatically adjusted when the criterion is satisfied and additional load shedding is needed. This automatically reduces the loading of the compressor. The compressor and the method of operating it may be employed as part of a system for producing a liquefied hydrocarbon stream and/or in the course of producing a liquefied hydrocarbon stream, in which case the compressor can be a refrigerant compressor and the fluid a refrigerant fluid. | 10-23-2014 |
| 20140318177 | INTEGRATION OF A LIQUEFIED NATURAL GAS LIQUEFIER WITH THE PRODUCTION OF LIQUEFIED NATURAL GAS - A method for integrating a liquefied natural gas liquefier system with production of liquefied natural gas from a methane-containing gas stream. The liquefied natural gas is produced by feeding a methane-containing gas stream through a heat exchanger to a distillation column and liquefying the natural gas while capturing the gaseous nitrogen. The liquefied natural gas is captured and the nitrogen gas is recovered, fed through the heat exchanger to recover cold. | 10-30-2014 |
| 20140352353 | Natural Gas Liquefaction System for Producing LNG and Merchant Gas Products - Pipeline natural gas is dried to remove water and carbon dioxide and liquefied. This gas and nitrogen are fed into a first heat exchanger for cooling against colder flash and expanded gases. High pressure nitrogen gas is expanded producing refrigeration to liquefy the natural gas passing through further heat exchangers and throttled via a control valve where the resulting liquid natural gas (LNG) exits into a separator. A portion of the LNG is fed to a nitrogen liquefaction unit with a major portion of LNG stored as product. The LNG portion is vaporized and heated to ambient against a pressurized liquefied nitrogen stream, a portion of which is stored as product. The remaining portion of the liquid nitrogen is optionally sent to an air separation unit (ASU) as “liquid assist” producing liquid and gaseous oxygen, liquid argon and gaseous nitrogen merchant gases. A portion of the natural gas stream selectively regenerates one of two dryers. If a letdown station is employed, a smaller booster compressor may be used. Medium and low pressure nitrogen is recovered and recycled through compression. The ASU separates and produces merchant gases to be liquefied wherein the liquid is generally produced by expanding nitrogen gas to generate refrigeration producing the liquid products while consuming nitrogen molecules. Natural gas feed streams richer in ethane, propane and heavier hydrocarbons enables the production of natural gas liquids as additional products in a further embodiment. Other embodiments are also disclosed. | 12-04-2014 |
| 20150013378 | Apparatus And Method For Liquefying Natural Gas By Refrigerating Single Mixed Working Medium - A system and a method for liquefying natural gas using single mixed refrigerant as refrigeration medium are provided. The system comprises a two-stage mixed refrigerant compressor ( | 01-15-2015 |
| 20150020541 | METHODS AND SYSTEMS FOR UNDERWATER GAS PRESSURIZATION AND LIQUEFACTION - Underwater gas pressurization units and liquefaction systems, as well as pressurization and liquefaction methods are provided. Gas is compressed hydraulically by a rising pressurization liquid that is separated from the gas by a water immiscible liquid layer on top of an aqueous salt solution. Tall vessels are used to reach a high compression ratio that lowers the liquefaction temperature. The pressurizing liquid is delivered gravitationally, after gasification, transport to smaller water depths and condensation. Cooling units are used to liquefy the compressed gas. A cascade of compression and cooling units may be used with sequentially higher liquefaction temperatures, which allow eventual cooling by sea water. The pressurizing liquid, dimensions of the vessels, the delivery unit, the coolants and the implementation of the cooling units are selected according to the sea location, to enable natural gas liquefaction in proximity to the gas source. | 01-22-2015 |
| 20150020542 | UNDERWATER GAS FIELD DEVELOPMENT METHODS AND SYSTEMS - Underwater gas pressurization units and liquefaction systems, as well as pressurization and liquefaction methods and gas field development methods are provided. Gas is compressed hydraulically by seawater introduced into vessels and separated from the gas by a water immiscible liquid layer. Tall, possibly vertical helical vessels are used to reach a high compression ratio that lowers the liquefaction temperature. Cooling units are used to liquefy the compressed gas, possibly by a coolant which is itself pressurized by a similar mechanism. The coolant may be selected to be liquefied under surrounding seawater temperatures. The seawater which is used to pressurize the gas may be used after evacuation from the vessels to pressurize intrastratal gas in the production stages and broaden the gas field development. | 01-22-2015 |
| 20150033792 | SYSTEM AND INTEGRATED PROCESS FOR LIQUID NATURAL GAS PRODUCTION - A system and method for producing liquid natural gas (LNG) from a natural gas stream is presented. The system includes a moisture removal device and compressor for removing moisture from and compressing the natural gas stream. The low moisture compressed natural gas stream is cooled in a heat exchanger to discharge a cooled compressed discharge stream. A multi-phase turbo expander provides for further cooling and expansion of the cooled compressed discharge stream, generating an expanded exhaust stream comprising a mixture of a vapor comprised substantially of CH | 02-05-2015 |
| 20150033793 | PROCESS FOR LIQUEFACTION OF NATURAL GAS - A process and system for production of liquefied natural gas (LNG) from natural gas. The natural gas is first partially purified by removal of water and other contaminants, followed by partial chilling to freeze some contaminants and to allow for production of a purge stream to remove other contaminants. These contaminants may be removed from the stream. The process has advantages of low cost and improved removal of contaminants. | 02-05-2015 |
| 20150075216 | FLOATING LNG PLANT COMPRISING A FIRST AND A SECOND CONVERTED LNG CARRIER AND A METHOD FOR OBTAINING THE FLOATING LNG PLANT - A floating LNG plant including a first and a second converted LNG carrier each provided with a hull and at least one LNG storage tank wherein the floating LNG plant further includes: a connection structure for connecting the hull of the first and the second converted LNG carrier in order to obtain a twin-hull vessel; process equipment for LNG processing on the floating LNG plant; and a mooring system for mooring the floating LNG plant to the seabed, wherein the at least first and second converted LNG carrier each include an LNG carrier, originally provided with a plurality of LNG tanks, wherein at least one LNG tank has been deactivated and/or removed from at least one LNG carrier to create space on the floating LNG plant for installing the process equipment for LNG processing. | 03-19-2015 |
| 20150082828 | NATURAL GAS FRACTIONAL DISTILLATION APPARATUS - Disclosed is a natural gas fractional distillation apparatus. The natural gas fractional distillation apparatus according to one embodiment of the present invention comprises: a gas-liquid separator into which condensed natural gas flows and which separates the condensed natural gas into a vapor stream and a liquid stream; a gas separator which separates the vapor stream separated in the gas-liquid separator into a first vapor stream and a second vapor stream; a first heat exchanger which condenses the first vapor stream separated in the gas separator; a first expander which expands the first vapor stream condensed in the first heat exchanger; a second expander which expands the second vapor stream separated in the gas separator; and a distillation tower into which the liquid stream separated in the gas-liquid separator, the first vapor stream expanded in the first expander, and the second vapor stream expanded in the second expander flow in order to be divided into an overhead vapor stream containing methane and a component-reinforced lower stream that is heavier than methane. The first heat exchanger is capable of exchanging heat between the first vapor stream separated in the gas separator and the first vapor stream and the overhead vapor stream expanded in the first expander. | 03-26-2015 |
| 20150096326 | METHOD FOR LIQUEFYING A HYDROCARBON-RICH FRACTION - A method for liquefying a hydrocarbon-rich fraction, in particular natural gas, by indirect heat exchange with the refrigerant blend of a refrigerant blend circuit is described, wherein the refrigerant blend is compressed, separated into a liquid phase which is rich in higher-boiling components (HMR) of the refrigerant blend and a gas phase which is rich in lower-boiling components (LMR) of the refrigerant blend, and said phases are mixed before the indirect heat exchange. According to the invention, indirect heat exchange proceeds in at least two heat exchangers (E | 04-09-2015 |
| 20150143842 | Method to Recover LPG and Condensates from Refineries Fuel Gas Streams - A method to recover olefins and C | 05-28-2015 |
| 20150303855 | VARIABLE SPEED DRIVE SYSTEM, METHOD FOR OPERATING A VARIABLE SPEED DRIVE SYSTEM AND METHOD FOR REFRIGERATING A HYDROCARBON STREAM - A variable speed drive system employing an electric motor and a frequency converter arranged between an AC power source and the electric motor is operated. The frequency converter functions to convert AC power obtained from the AC power source at a source frequency to converted power at a variable drive frequency. A mechanical assembly can be coupled to the electric motor. Electric modulation circuitry is provided interacting with the frequency converter. It is arranged to impose fluctuations, independently from any torsional excitation in the mechanical assembly and the AC power source, in the inter-harmonic frequencies of inter-harmonic currents generated in the frequency converter. | 10-22-2015 |
| 20150308734 | LIQUEFACTION OF A HYDROCARBON-RICH FRACTION - A process for liquefying and subcooling a hydrocarbon-rich fraction, particularly natural gas, is described wherein, once cooled down, the fraction is subjected to a partial condensation to remove heavy hydrocarbons, particularly benzene, by the steps of: a) the liquefied hydrocarbon-rich fraction is subcooled in a separate heat exchanger (normal mode), b) the supply of the liquefied hydrocarbon-rich fraction to the heat exchanger is interrupted at the latest when a defined solid deposition value in the heat exchanger is reached (cleaning mode), c) the solid in the heat exchanger is melted with a defrost gas and drawn off from the heat exchanger and d) the liquefied hydrocarbon-rich fraction is subsequently returned to the heat exchanger. | 10-29-2015 |
| 20150316316 | Liquefied Natural Gas Production - Hydrocarbon processing systems and a method for liquefied natural gas (LNG) production are described herein. The hydrocarbon processing system includes a fluorocarbon refrigeration system configured to cool a natural gas to produce LNG using a mixed fluorocarbon refrigerant and a nitrogen rejection unit (NRU) configured to remove nitrogen from the LNG. | 11-05-2015 |
| 20150330705 | Systems and Methods for Natural Gas Liquefaction Capacity Augmentation - Systems and methods for natural gas liquefaction capacity augmentation using supplemental cooling systems and methods to improve the efficiency of a liquefaction cycle for producing liquefied natural gas (LNG). | 11-19-2015 |
| 20150338161 | SYSTEM AND METHOD FOR LIQUEFYING NATURAL GAS - Provided is a system for liquefying natural gas including: a pre-cooling means; a gas-liquid separating means; a first heat exchanging means; a second heat exchanging means; a first expanding means; a second expanding means; a first mixed refrigerant converting means; a pre-cooled refrigerant supplying means; a natural gas supplying means; and a mixer. Provided is also a method for liquefying natural gas including: a first pre-cooling operation (S | 11-26-2015 |
| 20150362250 | Natural Gas Isobaric Liquefaction Apparatus - This invention is about a natural gas isobaric liquefaction apparatus, which is based on the Rankine cycle system of similar thermal energy power circulation apparatus at cryogenic side, a cryogenic liquid pump is used to input power and the refrigerating media makes up cold to the natural gas liquefying apparatus, so as to realize the isobaric liquefaction of natural gas. The natural gas liquefying apparatus of this invention can save energy by over 30% as compared with the traditional advanced apparatus with the identical refrigerating capacity, therefore it constitutes a breakthrough to the traditional natural gas liquefaction technology, with substantial economic, social and environmental protection benefits. | 12-17-2015 |
| 20160003526 | METHODS AND APPARATUSES FOR LIQUEFYING HYDROCARBON STREAMS - Methods and apparatuses for liquefying hydrocarbon streams are provided. In one embodiment, a method for liquefying a hydrocarbon stream includes expanding the hydrocarbon stream with a turbo expander to form an expanded hydrocarbon stream. The method includes compressing a first refrigerant with the turbo expander. Further, the method includes cooling the expanded hydrocarbon stream with the first refrigerant to form a liquid hydrocarbon stream. | 01-07-2016 |
| 20160003529 | Natural Gas Liquefaction Process - The described invention relates to processes and systems for treating a gas stream, particularly one rich in methane for forming liquefied natural gas (LNG), said process including: (a) providing a gas stream; (b) providing a refrigerant; (c) compressing said refrigerant to provide a compressed refrigerant; (d) cooling said compressed refrigerant by indirect heat exchange with a cooling fluid; (e) expanding the refrigerant of (d) to cool said refrigerant, thereby producing an expanded, cooled refrigerant; (f) passing said expanded, cooled refrigerant to a first heat exchange area; (g) compressing the gas stream of (a) to a pressure of from greater than or equal to 1,000 psia to less than or equal to 4,500 psia; (h) cooling said compressed gas stream by indirect heat exchange with an external cooling fluid; and heat exchanging the compressed gas stream with the expanded, cooled refrigerant stream. | 01-07-2016 |
| 20160010916 | AIR-COOLED MODULAR LNG PRODUCTION FACILITY | 01-14-2016 |
| 20160109177 | SYSTEM AND METHOD FOR NATURAL GAS LIQUEFACTION - A system for natural gas liquefaction includes a natural gas source for providing a flow of natural gas and a moisture removal system located downstream of the natural gas source. The system includes a first heat exchanger located downstream of the moisture removal system for exchanging heat between the natural gas flow path and a first refrigerant flow path of a refrigerant cycle subsystem. The system includes one first throttle valve located downstream of heat exchanger for expanding the flow of natural gas and causing reduction in pressure and temperature of the flow of natural gas. The system includes a filter subassembly for separating solid particles present in the flow of natural gas. The system includes a second heat exchanger located downstream of the filter subassembly and is configured to transfer heat from a natural gas vapor flow path to a second refrigerant flow path of the refrigeration cycle subsystem. | 04-21-2016 |
| 20160116209 | FLOATING LIQUEFIED-GAS PRODUCTION FACILITY - This floating liquefied-gas production facility ( | 04-28-2016 |
| 20160131308 | TRAIN PROPELLANT MANAGEMENT SYSTEMS AND METHODS - A thermal ballasting method includes providing a train having LNG, routing the train to scheduled stops along a train route, forming a ballast cryogen by condensing an atmospheric gas within the train, producing a latent heat, evaporating the LNG by transferring the latent heat to the LNG, forming a natural gas, fueling the train by consuming the natural gas, and delivering the ballast cryogen to an LNG storage site positioned along the train route. | 05-12-2016 |
