Class / Patent application number | Description | Number of patent applications / Date published |
062614000 | Heat exchange with liquid cryogen | 27 |
20090019888 | METHOD FOR LIQUEFYING A HYDROCARBON-RICH STREAM - A method for liquefying a hydrocarbon-rich stream, in particular a natural gas stream, is disclosed. A liquefaction of the hydrocarbon-rich stream takes place countercurrent to a refrigerant mixture cycle cascade consisting of two or three refrigerant mixture cycles. No additional process steps are involved in the heat exchange between the hydrocarbon-rich stream which is to be precooled and the refrigerant mixture of the first refrigerant mixture cycle. | 01-22-2009 |
20090071190 | CLOSED CYCLE MIXED REFRIGERANT SYSTEMS - The present invention provides for a process for providing cooling and controlling the refrigeration in a cooling loop used in the production of liquefied natural gas. A cooling loop in contact with a heat exchanger contains a refrigerant composition and by controlling the amount of a component in the refrigerant composition, the necessary level of cooling provided to the heat exchanger can be maintained. | 03-19-2009 |
20090090131 | PROCESS AND SYSTEM FOR REMOVING TOTAL HEAT FROM BASE LOAD LIQUEFIED NATURAL GAS FACILITY - A process and system is provided for removing total heat from a base load LNG liquefaction facility by using a hybrid cooling process. After liquefying a gas such as natural gas with a refrigerant, the refrigerant is transferred to a compression unit. In order to condense the compressed refrigerant, the refrigerant first flows through process coil bundles. As the refrigerant flows through the process coil bundles, water is sprayed, via a spray distribution system and a water reservoir, onto the outer surface of the process coil bundles. Air is passed over the process coil bundles via a fan system to allow heat transfer to take place and to cool and condense the refrigerant. | 04-09-2009 |
20090199590 | METHOD AND APPARATUS FOR COMPRESSING A NATURAL GAS STREAM - A method and apparatus for compressing a natural gas stream is disclosed. The natural gas stream to be compressed is liquefied and then compressed by means of at least one cryogenic pump. Liquefaction of the natural gas stream to be compressed preferably takes place using the energy from a low-temperature process, specifically in the exchange of heat countercurrent to at least one medium to be heated, preferably countercurrent to a cryogenic medium. | 08-13-2009 |
20090260392 | METHOD OF LIQUEFYING A HYDROCARBON-RICH FRACTION - For liquefying a hydrocarbon-rich fraction, in particular natural gas, the hydrocarbon-rich fraction which is to be liquefied is merely cooled and liquefied against a coolant mixture, and the coolant mixture, before its cooling, is separated into a gas phase and a liquid phase, and wherein the gas ( | 10-22-2009 |
20090282862 | METHOD AND APPARATUS FOR PRODUCING A COOLED HYDROCARBON STREAM - A method and apparatus for cooling two or more liquefied hydrocarbon streams. First ( | 11-19-2009 |
20090301130 | MASS TRANSFER OR HEAT-EXCHANGE COLUMN WITH MASS TRANSFER OF HEAT-EXCHANGE AREAS, SUCH AS TUBE BUNDLES, THAT ARE ARRANGED ABOVE ONE ANOTHER - The invention relates to a mass transfer or heat-exchange column, a tube bundle heat exchanger, with a first mass transfer or heat-exchange area, a first tube bundle ( | 12-10-2009 |
20100005833 | COILED HEAT EXCHANGER HAVING DIFFERENT MATERIALS - A coiled heat exchanger having a plurality of tubes which are wound around a core tube is disclosed. The coiled heat exchanger having a casing which delimits an outer space around the tubes, and wherein a first and a second component of the coiled heat exchanger are composed of different materials. | 01-14-2010 |
20100037654 | METHOD AND APPARATUS FOR COOLING A HYDROCARBON STREAM - A hydrocarbon stream ( | 02-18-2010 |
20100170297 | LIQUEFIED GAS RELIQUEFIER, LIQUEFIED-GAS STORAGE FACILITY AND LIQUEFIED-GAS TRANSPORT SHIP INCLUDING THE SAME, AND LIQUEFIED-GAS RELIQUEFACTION METHOD - A liquefied gas reliquefier that can be configured compactly and that is easy to handle is provided. A liquefied gas reliquefier ( | 07-08-2010 |
20100251763 | Apparatus and Methods for Natural Gas Transportation and Processing - In the transportation and processing of natural gas liquid nitrogen and liquid carbon dioxide is used in a heat exchanger process to liquefy natural gas supplied by a field site. The liquefied natural gas is transported to a regasification plant where cold energy in a part of the liquefied natural gas in an air separation device is used to produce liquid nitrogen and oxygen, natural gas. The oxygen is combusted in a power production plant, which captures the carbon dioxide produced by the combustion. This carbon dioxide is liquefied it using another part of the liquefied natural gas. The liquid nitrogen and liquid carbon dioxide is then transported to be used for further liquefaction of natural gas supplied by the field site. | 10-07-2010 |
20100293996 | METHOD AND APPARATUS FOR LIQUEFYING A HYDROCARBON STREAM AND FLOATING VESSEL OR OFFSHORE PLATFORM COMPRISING THE SAME - A method of liquefying a hydrocarbon stream, such as natural gas, comprising at least the steps of : (a) partially liquefying a hydrocarbon feed stream ( | 11-25-2010 |
20100293997 | METHOD AND APPARATUS FOR COOLING AND/OR LIQUEFYING A HYDROCARBON STREAM - A refrigerant stream is provided at a refrigerant pressure, and passed through at least three heat exchange steps operating at different pressures. A hydrocarbon stream is passed through at least two of these heat exchange steps to provide a cooled stream. A fraction of the refrigerant stream is expanded and evaporated at each heat exchange step to a different pressure, to provide a first evaporated refrigerant stream at a first evaporation pressure, and at least two other evaporated refrigerant streams at evaporation pressures lower than the first. The first evaporated refrigerant stream is compressed through a highest-pressure compressor to provide at least a fraction of the refrigerant stream at the refrigerant pressure, and the other evaporated refrigerant streams are compressed through at least two parallel lower pressure compressors to provide two or more part-compressed refrigerant streams, all of which part-compressed refrigerant streams are passed through the highest pressure compressor. | 11-25-2010 |
20100326133 | METHOD AND APPARATUS FOR COOLING DOWN A CRYOGENIC HEAT EXCHANGER AND METHOD OF LIQUEFYING A HYDROCARBON STREAM - Method and apparatus for cooling down a cryogenic heat exchanger, employing a programmable controller that receives input signals representing sensor signals of one or more controlled variables in a selected process, and produces control signals to control one or more manipulated variables in the selected process. The programmable controller can execute a computer program that comprises a network of at least three modules. The modules in the network are interconnected such a trigger signal received by a second and a third module of the at least three modules corresponds to a communication signal that is generated when the first module of the at least three modules has reached a pre-determined target for that module. | 12-30-2010 |
20110056238 | Methods and Configurations of Boil-off Gas Handling in LNG Regasification Terminals - A LNG storage and regasification plant includes a reliquefaction unit in which boil-off vapors from the storage tanks are re liquefied and recycled back to the LNG storage tanks for tank pressure and Wobbe index control. Preferably, LNG cold is used for reliquefaction and operational flexibility is achieved by feeding a portion of the pressurized boil-off gas to a fuel gas header and/or to be recondensed by the sendout LNG. | 03-10-2011 |
20110146341 | GAS SUPPLY SYSTEM FOR GAS ENGINES - A gas supply system for dual-fuel or gas engines is adapted for integration with a boil-off gas reliquefaction plant. The system includes a cryogenic heat exchanger, a boil-off gas compressor having a boil-off gas preheater, and a nitrogen loop with a compander. The gas is in the form of liquefied natural gas from cargo tanks or condensate from the reliquefaction plant. The gas supply system also includes an evaporator (optimizer) that extracts cold duty from the gas, and/or an evaporator that is arranged in a closed loop, which includes at least one pump and a heating source for an intermediate medium used to optimize extraction of the cold duty. | 06-23-2011 |
20110185767 | METHOD AND APPARATUS FOR LIQUEFYING A HYDROCARBON-CONTAINING FEED STREAM - Method and apparatus for liquefying a hydrocarbon stream such as natural gas from a feed stream. The method comprises at least the steps of: first cooling the feed stream ( | 08-04-2011 |
20120000242 | METHOD AND APPARATUS FOR STORING LIQUEFIED NATURAL GAS - Systems and methods for storing liquid natural gas is provided. In one embodiment, the natural gas vapor in the storage tank containing the liquefied natural gas may be directed a heat exchange unit attached to the storage tank, cooled by a refrigerant in the heat exchange unit, and then returned to the storage tank. | 01-05-2012 |
20120060553 | NATURAL GAS LIQUEFACTION - The invention relates to a method for liquefying a hydrocarbon-rich feed fraction, preferably natural gas, against a nitrogen refrigeration cycle. A feed fraction is cooled against gaseous nitrogen that is to be warmed, and liquefied against liquid nitrogen that is to be vaporized. The feed fraction is cooled and liquefied in an at least three-stage heat-exchange process. In the first section of the heat-exchange process, the feed fraction is cooled against superheated gaseous nitrogen to the extent that an essentially complete separation of the relatively heavy components is achievable. In the second section, the feed fraction freed from relatively heavy components is partially liquefied against gaseous nitrogen that is to be superheated. In the third section, the feed fraction is liquefied against nitrogen that is to be partially vaporized. | 03-15-2012 |
20130111947 | REBALANCING A MAIN HEAT EXCHANGER IN A PROCESS FOR LIQUEFYING A TUBE SIDE STREAM - A process for liquefying a tube side stream in a main heat exchanger is described. The process comprises the steps of: a) providing a first mass flow to the warm end of a first subset of individual tubes, b) providing a second mass flow to the warm end of a second subset of individual tubes, c) evaporating a refrigerant stream on the shell side; d) measuring an exit temperature of the first mass flow; e) measuring an exit temperature of the second mass flow; and, f) comparing the exit temperature of the first mass flow measured in step d) to the exit temperature of the second mass flow measured in step e), the process characterized in that at least one of the first and second mass flows is adjusted to equalise the exit temperature of the first mass flow with the exit temperature of the second mass flow. | 05-09-2013 |
20140190205 | Method For Liquefying Natural Gas With A Triple Closed Circuit Of Coolant Gas - A process for liquefying natural gas by; a) causing it to flow through three series connected heat exchangers, where gas is cooled to T | 07-10-2014 |
20160003527 | SYSTEM AND METHOD FOR LIQUEFYING NATURAL GAS EMPLOYING TURBO EXPANDER - An improved system and method for liquefying natural gas employing liquid nitrogen is disclosed. The improved system and method lowers the nitrogen consumption rate by using an expander, for example, a radial inflow turbo-expander, on the nitrogen side. This reduction in nitrogen consumption rate substantially reduces system operating costs. | 01-07-2016 |
20160069609 | METHOD OF LIQUEFYING A CONTAMINATED HYDROCARBON-CONTAINING GAS STREAM - A method of liquefying a contaminated hydrocarbon-containing gas stream includes cooling the stream in a first heat exchanger and cooling the cooled stream in an expander to obtain a partially liquefied stream. The method further includes separating the partially liquefied stream in a separator to obtain a gaseous stream and a liquid stream. The liquid stream is expanded to obtain a multiphase stream containing at least a vapour phase, a liquid phase and a solid phase. The multiphase stream is separated in a separator to obtain a gaseous stream and a slurry stream. The slurry stream is separated in a solid/liquid separator to obtain a liquid hydrocarbon stream and a concentrated slurry stream. The gaseous stream is passed through the first heat exchanger to obtain a heated gaseous stream. The heated gaseous stream is compressed and combined with the contaminated hydrocarbon-containing gas stream. | 03-10-2016 |
20160109178 | 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). | 04-21-2016 |
20160138862 | METHOD AND APPARATUS FOR COOLING A HYDROCARBON STREAM - A hydrocarbon stream, such as natural gas, is commonly cooled together with a first refrigerant stream, against an evaporating refrigerant in a series of one or more consecutively arranged common heat exchangers. The series comprises of one or more consecutively arranged common heat exchangers comprise a first common heat exchanger, upstream of which first common heat exchanger the hydrocarbon stream and the first refrigerant stream are not commonly cooled. The hydrocarbon stream to be cooled is fed into the first common heat exchanger at a hydrocarbon feeding temperature, while the first refrigerant stream is fed into the first common heat exchanger at a refrigerant feeding temperature. The temperature difference between the hydrocarbon feeding temperature and the refrigerant feeding temperature is lower than 60° C. | 05-19-2016 |
20160187056 | NATURAL GAS LIQUEFACTION PROCESS - A natural gas liquefaction process according to the present invention uses a single closed-loop refrigeration cycle employing a mixed refrigerant, thereby having a simple structure for the liquefaction process and allowing the liquefaction process to be easily operated. Furthermore, the present invention cools natural gas after one stream is separated into two streams, thereby having an excellent efficiency of the liquefaction process. | 06-30-2016 |
20180023889 | Heavy Hydrocarbon Removal System for Lean Natural Gas Liquefaction | 01-25-2018 |