| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 423224000 | By oxidizing or burning component | 38 |
| 20080233025 | METHOD AND SYSTEM FOR RECOVERING SULPHUR FROM GAS STREAMS - There is described a novel process for removing sulphurous compounds from industrial gaseous streams, such as sour gas, using an oxygen deficient environment during the oxidation of H | 09-25-2008 |
| 20080260611 | Method for direct oxidation of hydrogen sulfide to elemental sulfur at low temperatures - A method for removal of hydrogen sulfide and mercury from a gaseous stream containing hydrogen sulfide and mercury in which a hydrogen sulfide conversion catalyst is contacted with the gaseous stream at a temperature less than or equal to the dewpoint of elemental sulfur, and the hydrogen sulfide is oxidized, forming elemental sulfur. | 10-23-2008 |
| 20080299026 | Process for the Removal in Continuous of Hydrogen Sulfide From Gaseous Streams - Process for the removal in continuous of hydrogen sulfide from gaseous streams containing it, comprising: a) putting a gas containing H | 12-04-2008 |
| 20090035199 | METHOD FOR SOUR GAS TREATMENT - A method for selectively removing hydrogen sulfide and carbon dioxide from sour gas by reacting the hydrogen sulfide and carbon dioxide in the sour gas with sodium hydroxide is disclosed. Also disclosed is a process for the production of a salt product from a sour gas stream. The reaction with sodium hydroxide creates a scrubber solution comprising water, hydrocarbons, contaminants and salts. The scrubber solution may be oxidized, filtered and can then be subjected to electrodialysis. Ammonia is introduced into the acid compartments of the cell. Sodium hydroxide and a salt product comprising ammonium sulfate or ammonium thiosulfate with ammonium bicarbonate, ammonium carbonate, ammonium carbamate may be produced. The regenerated sodium hydroxide may be used to sweeten further sour gas. The salt product may be used as a fertilizer. | 02-05-2009 |
| 20090098035 | CO2 CAPTURE METHOD WITH THERMAL INTERGRATION OF REGENERATOR | 04-16-2009 |
| 20090104098 | METHOD AND APPARATUS FOR THE REMOVAL OF CARBON DIOXIDE FROM A GAS STREAM - The invention provides methods and apparatuses for removing carbon dioxide from a gas stream. In particular, the invention provides methods and apparatuses for absorbing carbon dioxide from a coal-fired boiler flue gas stream using an absorbing solution and for regeneration of an alkaline component used in the absorbing solution. In one embodiment, the invention provides a method for removing carbon dioxide from a gas stream by contacting a gas stream containing carbon dioxide with an alkaline liquid stream; absorbing at least a portion of the carbon dioxide into the alkaline liquid stream to produce absorbed carbon dioxide; and catalyzing a reaction of the: absorbed carbon dioxide to a form of carbonate. | 04-23-2009 |
| 20090130008 | Process for Removing Hydrogen Disulfide from Gas - A reactor and process for removing hydrogen sulfide from gas. The reactor vessel contains an oxidizing solution and packing, where the packing fill about 25% to about 75% of the liquid volume of the vessel. | 05-21-2009 |
| 20090232717 | Process for Producing a Gas Stream Depleted of Hydrogen Sulphide - The invention provides a process for producing a gas stream depleted of H | 09-17-2009 |
| 20090285738 | Direct oxidation of sulfur with carbon dioxide recycle - A method for removing hydrogen sulfide to produce elemental sulfur from a synthesis gas feed stream containing hydrogen sulfide, carbon monoxide, hydrogen, carbon dioxide and water using direct oxidation of hydrogen sulfide by contacting a feed stream containing synthesis gas with oxygen in the presence of a catalyst comprised of metal oxides to convert a substantial fraction of the hydrogen sulfide present in the feed stream into sulfur and water, followed by cooling the reaction products to a temperature below the dew point temperature of the water and sulfur, separating the reaction products into two streams, with the first stream containing elemental sulfur and water in liquid form and the second stream containing unreacted components from the synthesis gas, hydrogen sulfide, carbon monoxide, hydrogen, carbon dioxide and water, and then recycling a portion of the unreacted components to the feed stream. | 11-19-2009 |
| 20100150803 | METHOD FOR CAPTURING CARBON DIOXIDE - A method for capturing carbon dioxide has been disclosed in the invention, comprising the steps of: (1) electrolyzing a saturated salt solution so as to obtain sodium hydroxide; (2) adding the sodium hydroxide into a seawater solution, so as to allow magnesium chloride and calcium chloride in the seawater to be converted into magnesium hydroxide and calcium hydroxide; (3) bringing carbon dioxide into a water solution having magnesium hydroxide and calcium hydroxide, so as to convert them into magnesium carbonate and calcium carbonate. The method allows for the capture of carbon dioxide in an effective, fast and safe manner, which reduces the amount of atmospheric carbon dioxide, and cuts down carbon dioxide emissions consequently. | 06-17-2010 |
| 20100183491 | SYSTEMS AND METHODS FOR TREATING A STREAM COMPRISING AN UNDESIRABLE EMISSION GAS - A method for treating a stream comprising an emission gas includes passing portions of the stream comprising the emission gas to two or more reactor units arranged in parallel while subjecting fluid flowing through at least one of the reactor units to pressure control; identifying when at least one of the reactor units trips or is taken out of service; and when at least one of the reactor units trips or is taken out of service, adjusting a flow path of said portion of the stream originally passing to the out-of-service reactor unit such that said portion passes to an absorber for removing the emission gas via a compressor, and subjecting the fluid flowing through all of the in-service reactor units to flow rate control. | 07-22-2010 |
| 20100247410 | ROCKS AND AGGREGATE, AND METHODS OF MAKING AND USING THE SAME - Compositions comprising synthetic rock, e.g., aggregate, and methods of producing and using them are provided. The rock, e.g., aggregate, contains CO | 09-30-2010 |
| 20110002826 | USE OF REDOX MASS HAVING A SPINEL TYPE STRUCTURE FOR A LOOPING REDOX PROCESS - The invention relates to the use of a novel type of active mass in looping redox processes. Said mass contains a spinel of formula Cu | 01-06-2011 |
| 20110033355 | METHOD AND APPARATUS TO SEQUESTER CO2 GAS - The present invention is directed to methods to sequester oxides of carbon to prevent them from entering the atmosphere as gases. More specifically, this invention is directed to methods of chemical reactions and process to decompose carbon oxides by combustion of a metal fuel with carbon oxides using a regeneration process to recover the metal fuel. The process can optionally and beneficially be coupled to other useful chemical processes for the industrial purpose of sequestering carbon oxides into useful commercial chemicals and elements like carbon, chlorine, and sodium bicarbonate. | 02-10-2011 |
| 20110033356 | SYSTEMS AND METHODS FOR TREATING A STREAM COMPRISING AN UNDESIRABLE EMISSION GAS - A method for treating a stream comprising an emission gas includes passing portions of the stream comprising the emission gas to two or more reactor units arranged in parallel while subjecting fluid flowing through at least one of the reactor units to pressure control; identifying when at least one of the reactor units trips or is taken out of service; and when at least one of the reactor units trips or is taken out of service, adjusting a flow path of said portion of the stream originally passing to the out-of-service reactor unit such that said portion passes to an absorber for removing the emission gas via a compressor, and subjecting the fluid flowing through all of the in-service reactor units to flow rate control. | 02-10-2011 |
| 20110142738 | METHOD FOR TREATING SPENT REGENERATION GAS - The invention covers a method for treating spent regeneration gas from one or more molecular sieve treaters, first in an amine solvent unit and then in a caustic unit. The amine solvent unit removes hydrogen sulfide and carbonyl sulfide and the caustic unit removes mercaptans. Optionally, there are additional treatments before the treated gas has met specifications for burning as a fuel or used for other purposes. | 06-16-2011 |
| 20110243820 | Methods for Associating or Dissociating Guest Materials with a Metal Organic Framework, Systems for Associating or Dissociating Guest Materials Within a Series of Metal Organic Frameworks, and Gas Separation Assemblies - Methods for releasing associated guest materials from a metal organic framework are provided. Methods for associating guest materials with a metal organic framework are also provided. Methods are provided for selectively associating or dissociating guest materials with a metal organic framework. Systems for associating or dissociating guest materials within a series of metal organic frameworks are provided. Gas separation assemblies are provided. | 10-06-2011 |
| 20110250113 | METHOD OF TREATING A SYNGAS STREAM AND AN APPARATUS THEREFOR - The present invention provides a method of treating a raw syngas stream and an apparatus therefor. In the method a raw syngas stream is passed to a hydrolysis unit to provide a hydrolysed syngas stream and a condensed water stream. The hydrolysed syngas stream is passed to an acid gas removal unit to separate H | 10-13-2011 |
| 20120039780 | HEADSPACE GAS TREATMENT APPARATUS AND METHOD - An apparatus for treating headspace gas has a production water tank, a shource of at least one of oxygen and ozone, a diffuser, and a reaction tank. The production water tank contains a headspace gas and a headspace gas outlet. At least a portion of the headspace gas is a sulfide gas. The diffuser diffuses a mixture of the at least one of oxygen and ozone and headspace gas from the production water tank via the headspace gas outlet into a liquid solvent. The at least one of oxygen and ozone oxidizes at least a portion of the sulfide gas as they pass through the diffuser. The reaction tank for receives the liquid solvent. | 02-16-2012 |
| 20120107205 | HIGH PRESSURE REDUCTION-OXIDATION DESULFURIZATION PROCESS - An improved process for reduction-oxidation desulphurization uses an oxidizer operating at a pressure greater than the absorber where a liquid reduction-oxidation catalyst solution contacts a sulfur-containing gas feed stream. | 05-03-2012 |
| 20120107206 | SYSTEM AND METHOD FOR THE REMOVAL OF GREENHOUSE GASES - A system and a method are provided for removing greenhouse gases, particulates and pollutants from the atmosphere utilizing a greenhouse gas collection apparatus. An atmospheric mixture is collected and progressively treated in first, second and third tube furnaces and a scrubber to produce an effluent for treatment in a chemical processing plant. The first tube furnace oxidizes hydrocarbons, the second tube furnace oxidizes any remaining nitrous and nitric oxides, and the third tube furnace oxidizes sulfur dioxide. The scrubber precipitates carbon dioxide as calcium carbonate. A vacuum pump draws the atmospheric mixture through tube furnaces and the scrubber. | 05-03-2012 |
| 20120148465 | METHOD AND SYSTEM FOR HYDROGEN SULFIDE REMOVAL - A system for hydrogen sulfide removal from a sour gas mixture including hydrogen sulfide. The sour gas mixture is reacted with a transition metal compound in a scrubber. Sulfide from the hydrogen sulfide is oxidized to form elemental sulfur and the transition metal is reduced to form a reduced state transition metal compound. An electrochemical redox reaction is performed including the reduced state transition metal compound to regenerate the transition metal compound in an electrolyzer including a power source. During the electrochemical redox reaction a voltage from the power source applied to the electrolyzer is controlled to regenerate the transition metal compound at a rate sufficient to match a flow rate of hydrogen sulfide into the scrubber or maintain a predetermined maximum hydrogen sulfide level out from the scrubber. The transition metal compound regenerated is returned to the scrubber for the reacting. | 06-14-2012 |
| 20120183461 | System and Method for Removing a Contaminant from a Gas Stream - A system and method for removing contaminants from a gas stream is provided. The method can include the steps of reacting the gas stream with ozone to form solid contaminant particles and separating the solid contaminant particles from the gas stream. The solid contaminant particles can be separated from the gas stream using an adsorption material. | 07-19-2012 |
| 20120213683 | METHOD FOR TREATING EXHAUST GAS FROM CO2 RECOVERY APPARATUS - Provided is a method capable of removing a low concentration of amines contained in an exhaust gas that is discharged from a CO | 08-23-2012 |
| 20130071308 | CO2 RECOVERY USING THE SURE PROCESS - The invention relates to a method for recovering sulphur from a sour gas containing hydrogen sulphide and carbon dioxide, comprising: oxidation of the sour gas, wherein a part of the hydrogen sulphide is oxidized to sulphur dioxide and water, reaction of the resulting sulphur dioxide with the residual hydrogen sulphide to elementary sulphur, and removal of elementary sulphur. According to the invention carbon dioxide and/or carbon dioxide generated by oxidation of the sour gas is compressed, and at least a part of the carbon dioxide is injected into an oil well. Furthermore, the invention relates to a plant suitable for performing the above method. | 03-21-2013 |
| 20130129589 | Process for the Removal of Hydrogen Sulfide from a Gas Stream - The application relates to a process for the removal of hydrogen sulfide from a gas stream by catalytic direct oxidation without employing the combustion step of a Claus process. The process is particularly suitable for desulfurization of gas streams that contain hydrogen and allows sulfur recovery efficiency of better than 99%. | 05-23-2013 |
| 20130164202 | RECIRCULATED-SUSPENSION PRE-CALCINER SYSTEM - A recirculated-suspension pre-calciner system is disclosed, comprising: a vortex cyclone dust collecting equipment including a plurality of devices, wherein a top device of the vortex cyclone dust collecting equipment is used as a feed system; a vertical combustion kiln; a blower; and a powder purge system, wherein powders in the feed system fall into the vortex cyclone dust collecting equipment and pass through a plurality of the devices to mix and exchange heat with flue gas comprising CO | 06-27-2013 |
| 20130216460 | PROCESS FOR THE REMOVAL OF SULFUR COMPOUNDS FROM GAS STREAMS - A method of reducing sulfur compounds from an incoming gas stream, comprising flowing the gas stream over a hydrolysis catalyst to convert COS and CS | 08-22-2013 |
| 20130272938 | METHOD AND AN APPARATUS FOR PERFORMING AN ENERGY EFFICIENT DESULPHURIZATION AND DECARBONISATION OF A FLUE GAS - A method for performing an energy efficient desulphurization and decarbonisation of a flue gas comprising sulphur oxides and carbon dioxide includes (a) starting a reaction between an electropositive metal and the sulphur oxides and the carbon dioxide of said flue gas; (b) reducing the sulphur oxides and the carbon dioxide of said flue gas simultaneously in an exothermic reaction with an electropositive metal and thereby generating reduced gaseous carbon products and solid reaction products while cooling; (c) extracting the solid reaction products of the reducing step (a) in a solvent to generate a first suspension comprising suspended carbon containing reaction products and sulphur containing reaction products; (d) oxidizing the first suspension obtained in step (b) to generate a second suspension comprising suspended carbon containing reaction products and oxidized sulphur containing reaction products; and (e) separating the oxidized sulphur containing reaction products from the suspended carbon containing reaction products. | 10-17-2013 |
| 20140023577 | METHOD FOR TREATING A CARBON DIOXIDE-CONTAINING WASTE GAS FROM AN ELECTROFUSION PROCESS - A method for treating a carbon dioxide-containing waste gas from an eletrofusion process, in which a hydrocarbon-containing gas is fed to a waste gas and the carbon dioxide in the waste gas is converted at least partially into carbon monoxide and hydrogen in a reaction and the carbon monoxide-hydrogen mixture is stored for an additional combustion process. | 01-23-2014 |
| 20140178277 | CO2 and SO2 Capture Method - The invention relates to a CO | 06-26-2014 |
| 20140328739 | EMISSION CONTROL SYSTEM - A method and apparatus for treating an exhaust or waste gas stream using Silic Pollution Reduction System (SPRS) is provided to remove at least one unwanted material to clean the exhaust or waste gas stream by gas stabilisation to allow the cleaned gas stream to be discharged directly to atmosphere. The apparatus includes at least three treatment stations for treating the exhaust or waste gas stream in sequence, in which at least one treatment station is a wet reactor containing a nucleating or precipitating liquid for removing the unwanted material as a solid and for oxygenating the remaining gas stream from which the unwanted material has been removed, and at least one treatment station is or has a gas compressing stage or component for compressing the gas stream being treated. The advantage of the method and apparatus is that the treated gas stream can be discharged directly to atmosphere with reduced amounts of pollutants. | 11-06-2014 |
| 20140348735 | PREPARATION OF AN AQUEOUS REAGENT FOR THE ABSORPTION OR DESTRUCTION OF POLLUTANTS - Process for treating a medium by the removal or destruction of one or more undesired substances present in said medium, comprising combining hydrogen peroxide and alkali hydroxide in an aqueous solution to form superoxide, and bringing the resultant superoxide-containing solution into contact with said medium. The process is useful for the destruction of halogenated organic pollutants and also for carbon dioxide removal from flue gases. The process can also be applied for soil remediation. | 11-27-2014 |
| 20150139876 | AMINE-CONTAINING SCRUBBING SOLUTION WITH OZONE AND/OR HYDROGEN PEROXIDE FOR ABSORBING CARBON DIOXIDE - A method for depositing carbon dioxide from a flue gas (RG) of a combustion system is provided. A scrubbing solution (A) with an amine-containing absorption agent is mixed together with ozone and/or hydrogen peroxide as an oxidizing agent for nitrite. The flue gas (RG) is brought into contact with the scrubbing solution (A) prepared in this manner, whereby carbon dioxide contained in the flue gas is absorbed, and the scrubbing solution (A) is then thermally treated, whereby the carbon dioxide is desorbed. A corresponding scrubbing solution (A) with an amine-containing absorption agent and with ozone and/or hydrogen peroxide as an oxidizing agent for nitrite is also provided. | 05-21-2015 |
| 20160023927 | HYDROGEN SULFIDE ABATEMENT IN GEOTHERMAL FACILITIES - A method of reducing hydrogen sulfide content in a medium is disclosed. The method may include the steps of contacting a medium containing hydrogen sulfide with an effective amount of hydrogen peroxide, contacting the medium with an oxidizing agent, converting the hydrogen sulfide to sulfate, and reducing the hydrogen sulfide content in the medium. The medium may be a gas or a liquid. | 01-28-2016 |
| 20160136573 | DESULFURIZATION OF FLUE GAS FROM AN AMINE PROCESS - A method for disposing of excess sulfur dioxide in a flue gas from thermal oxidation of an acid gas stream including hydrogen sulfide recovered from a rich amine solution of an amine plant servicing at least one well head, includes cooling the flue gas to about 300 to about 650 degrees Fahrenheit, injecting a dry sorbent into the flue gas after the step of cooling the flue gas, reacting the dry sorbent after the step of injection, with the sulfur dioxide of the flue gas for sufficient time for formation of reaction byproduct and treated gas, and separating the reaction byproduct from the treated gas. Examples of the dry sorbent include calcium hydroxide, sodium bicarbonate, and trona, as well as magnesium hydroxide and sodium carbonate, and combinations. | 05-19-2016 |
| 20160152470 | PROCESSES FOR PRODUCING SULFURIC ACID FROM SOUR TAIL GAS FIELD | 06-02-2016 |
| 20160199779 | METHOD AND INSTALLATION FOR THE PURIFICATION OF EXHAUST GASES, HAVING A REGENERATIVE POST-COMBUSTION INSTALLATION | 07-14-2016 |
