Carbon Dioxide Or Hydrogen Sulfide Component Patents (Class 423/220)
  • Patent number: 11083995
    Abstract: A process to treat/clean a gas, containing SO2, CO2 and O2 comprising the steps of: bringing the gas in contact with an activated carbon catalyst, converting SO2 to SO3/H2SO4 on the activated carbon catalyst, washing the SO3/H2SO4 from the activated carbon catalyst to obtain a sulfuric acid solution and a SO2 depleted gas; bringing the SO2 depleted gas in contact with an aqueous ammonia solution wherein CO2 is converted to obtain a SO2 and CO2 depleted gas containing ammonia; and bringing the SO2 and CO2 depleted gas containing ammonia in contact with the sulfuric acid solution obtained in step a. to form a solution containing ammonium sulfate and a treated, clean gas.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: August 10, 2021
    Inventor: Alain Strickroth
  • Patent number: 10994261
    Abstract: The present disclosure provides novel solid sorbents synthesized by the reaction of polyamines with polyaldehyde phosphorous dendrimer (P-dendrimer) compounds. The sorbents are highly stable and exhibit rapid reaction kinetics with carbon dioxide, making the sorbents applicable for carbon capture, and can be easily regenerated for further use. The material is stable to aqueous and organic media, as well as strong acid and bases. The sorbent maintains full capacity over extended use. The material can be used for CO2 capture from pure CO2 streams, mixed gas streams, simulated flue gas, and ambient air. Additionally, the material can be adhered to surfaces for reversible CO2 capture applications outside of bulk particle-based processes.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: May 4, 2021
    Inventors: Samuel John Thompson, III, Mustapha Soukri
  • Patent number: 10987624
    Abstract: The present disclosure relates to a flue gas treatment system (e.g. a multi-pollutant flue gas treatment system) for removal of greenhouse gases such as SO2, NO, NO2, H2S, HCl, water and CO2 as well as heavy metals (e.g. mercury, arsenic, bismuth, cadmium, lead and/or selenium) from the flue gases of fossil-fueled utility and industrial plants by reacting the raw flue gas, firstly, with chlorine in a gas-phase oxidation reaction and recovering the resulting products as marketable products, and then, secondly, treating the cleaned gas, which includes CO2, with a Sabatier reaction to produce a hydrocarbon fuel (e.g. methane). The system also includes an electrolytic unit for electrolyzing HCl to produce hydrogen gas for the Sabatier reaction as well as chlorine gas, which may then be recycled into the reactor.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: April 27, 2021
    Inventor: Barbara Mueller
  • Patent number: 10940432
    Abstract: Disclosed is a process for regenerating a hybrid solvent used to remove contaminants from a fluid stream and to provide an improved yield of purified fluid. Said process comprises at least two purification units and at least one regeneration unit wherein regenerated lean hybrid solvent and condensed water from the regeneration unit is used to reclaim additional purified fluid in the second purification unit.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: March 9, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: John R. Dowdle, Timothy D. Halnon, Christophe R. Laroche, Diego Ortiz Vega, Linda L. Pirtle, Gerardo Padilla
  • Patent number: 10937707
    Abstract: A wiring substrate includes an insulating substrate that is square in plan view, the insulating substrate having one main surface with a recess and an other main surface opposite to the one main surface, and external electrodes located on the other main surface of the insulating substrate and in a peripheral section of the insulating substrate. The external electrodes include first external electrodes and second external electrodes. In plan view, the first external electrodes are located at corners of the insulating substrate, and the second external electrodes are interposed between the first external electrodes. Each of the first external electrodes has a smaller area and a larger width in a direction orthogonal to each side of the insulating substrate than each of the second external electrodes.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 2, 2021
    Assignee: Kyocera Corporation
    Inventor: Hiroshi Kawagoe
  • Patent number: 10919016
    Abstract: A system and method of using the system for controlling oxidation of sulfites to reduce total nitrite and nitrate levels in a slurry is disclosed. The system includes a tank having an inlet for receiving a slurry produced in a wet flue gas desulfurization process. The tank also includes an inlet for receiving a gas. The inlet for receiving the gas is operable to disperse at least a portion of the gas received in the tank through at least a portion of the slurry received in the tank. A sensor is configured to measure a sulfite concentration of the slurry received in the tank to obtain a sulfite concentration measurement. In some embodiments, the sensor is a sulfite analyzer. In other embodiments, the sensor is a virtual analyzer. The system also includes a controller. Software executing on the controller generates an electronic signal affecting an adjustment of a flow rate of gas into the slurry in the tank based at least in part on the sulfite concentration/sulfite concentration measurement.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: February 16, 2021
    Inventor: Raymond Raulfs Gansley
  • Patent number: 10851321
    Abstract: Techniques for removing sulfur compounds from a sulfur-containing gas stream can include contacting the gas with an absorption solution comprising a metal cation capable of reacting with the sulfur compound to form a metal sulphide precipitate and/or a metal mercaptide precipitate. In addition, the treatment can include controlling a concentration of the precipitates below a threshold to maintain rheological properties; subjecting the precipitate-enriched solution to vitalization; subjecting the precipitate-enriched solution to regeneration including oxidation; and/or other features to enhance the sulfur removal operations.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: December 1, 2020
    Inventors: Geert Frederik Versteeg, Wouter Nicolaas Wermink
  • Patent number: 10773206
    Abstract: A CO2 recovery apparatus includes: an absorption tower configured to remove CO2 in an exhaust gas by contacting with a CO2 absorption liquid containing an absorption agent; a regeneration tower for regenerating the CO2 absorption liquid from the absorption tower; a reflux water drum for separating CO2 gas released from the regeneration tower into CO2 gas and condensed water; a first cleaning device installed in a gas-phase part of the regeneration tower and configured to remove the absorption agent contained in the CO2 gas flowing through the gas-phase part, by using a first cleaning liquid containing at least the condensed water from the reflux water drum or a water obtained from the condensed water; and a control device configured to adjust a supply amount of the first cleaning liquid to the first cleaning device so that a concentration of the absorption agent in the condensed water is maintained to be not greater than a predetermined value.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: September 15, 2020
    Assignee: Mitsubishi Heavy Industries Engineering, Ltd.
    Inventors: Osamu Miyamoto, Takashi Kamijo, Tatsuya Tsujiuchi
  • Patent number: 10751664
    Abstract: An energy-efficient method of removing carbon dioxide, hydrogen sulfide, and other acid gases from a stream of flue gases. The flue stream is contacted with a predetermined sorbent system to remove acid gases from the flue stream. The acid gas-rich sorbent is then heated to desorb the acid gas for capture and regenerate the sorbent. Heat exchangers and heat pumps are used to reduce utility steam and/or cooling water consumption.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: August 25, 2020
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Stuart J. Higgins, Yih-An Liu, Yueying Yu
  • Patent number: 10696561
    Abstract: A method for treatment of process condensate (1) in an ammonia plant, wherein the ammonia plant comprises a front-end section producing a make-up gas and a synthesis section where the make-up gas is reacted to ammonia, and said process condensate (1) is collected from one or more equipment of the ammonia plant and is an aqueous solution comprising ammonia, carbon dioxide and methanol. Said method comprises: stripping said process condensate with low-pressure steam (4), obtaining a vapour phase (5) comprising ammonia, carbon dioxide and methanol stripped from the process condensate; condensing said vapour phase, obtaining a solution (11) enriched of ammonia and methanol; re-introducing a first portion (12) of said solution to said stripping environment; recycling a second portion (13) of said solution to said ammonia plant.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: June 30, 2020
    Assignee: Casale SA
    Inventors: Sergio Panza, Luca Pasco
  • Patent number: 10668733
    Abstract: The present invention relates to vessels comprising a formulation including at least one organic semiconductor, wherein the formulation is in contact with at least one absorption material. The invention further describes a process for producing the vessel and for the use thereof.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: June 2, 2020
    Assignee: Merck Patent GmbH
    Inventors: Volker Hilarius, Edgar Boehm, Juliane Suermann, Mark John Goulding, Leticia Garcia Diez
  • Patent number: 10507425
    Abstract: An environmental control system includes an air conditioning subsystem; a mix manifold downstream of the air conditioning subsystem and upstream of an environment to be conditioned; and a contaminant removal subsystem downstream of the environment to be conditioned. The contaminant removal subsystem includes a first gas-liquid contactor-separator. The first gas-liquid contactor-separator includes a first packed, stationary bed that provides a heat/mass transfer surface for contact between a contaminated air from the environment and a liquid absorbent.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: December 17, 2019
    Inventors: Phoebe Henson, Stephen Yates, Dacong Weng, Alexander Bershitsky, Ted Bonk
  • Patent number: 10450204
    Abstract: A system, for recycling production salt water from an oil well, may include a salt water inlet valve configured to receive salt water; a separation tank configured to receive the salt water from the salt water inlet valve; a burner tube located within the separation tank that is configured to pass hot gas through the separation tank and boil the salt water; a steam exhaust configured to release steam produced by the separation tank; and a salt valve configured to release salt produced by the separation tank.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: October 22, 2019
    Inventor: J. Keith Betts
  • Patent number: 10392917
    Abstract: Identifying geographical uses, other than disposal for produced water that is recovered from a well and establishing methods and systems for recovering and handling this water. The produced water is treated so as to render the produced water suitable for solution mining. The produced water is transported to a solution mining site and the produced water is utilized at the solution mining site.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: August 27, 2019
    Inventors: Katherine N. Zimmerman Frisby, Patti Yoast
  • Patent number: 10322371
    Abstract: Methods of sequestering carbon dioxide (CO2) are provided. Aspects of the methods include contacting an aqueous capture ammonia with a gaseous source of CO2 under conditions sufficient to produce an aqueous ammonium carbonate. The aqueous ammonium carbonate is then combined with a cation source under conditions sufficient to produce a solid CO2 sequestering carbonate and an aqueous ammonium salt. The aqueous capture ammonia is then regenerated from the from the aqueous ammonium salt. Also provided are systems configured for carrying out the methods.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: June 18, 2019
    Assignee: Blue Planet, Ltd.
    Inventors: Brent R. Constantz, Jacob Schneider, Mark Bewernitz
  • Patent number: 10315154
    Abstract: The present invention relates to a method for recovering carbon dioxide from an absorbent rich on gaseous carbon dioxide, in which the energy used for separation of absorbent and carbon dioxide in a stripping column is reduced by using two stripper columns having different operating pressures and recycling heat transfer fluid from the stripper off gas in an energy efficient manner.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: June 11, 2019
    Assignee: Union Engineering A/S
    Inventors: Rasmus Find, Jan Flensted Poulsen
  • Patent number: 10300430
    Abstract: A composite material for gas capture, notably CO2 capture and storage. The composite material includes a mixture of a solid or liquid reactive filler and a gas-permeable polymer such that the reactive filler forms micron-scale domains in the polymer matrix.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: May 28, 2019
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Du T. Nguyen, Roger D. Aines, Sarah E. Baker, William L. Bourcier, Eric B. Duoss, James S. Oakdale, Megan M. Smith, William L. Smith, Joshuah K. Stolaroff, Congwang Ye
  • Patent number: 10227901
    Abstract: One embodiment relates to a methanation method comprising the conversion into methane (CH4) of CO2, in particular CO2 gas, originating from, in particular diverted or obtained from, power plant flue gas from a power plant fired with carbon-containing fuel, in particular carbon-containing gas, and having a connected water/steam circuit, said method being performed in a methanation plant. Some embodiments provide a solution that makes it possible to couple a power plant and a methanation plant to one another in an energetically favorable manner.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: March 12, 2019
    Assignee: Mitsubishi Hitachi Power Systems Europe GMBH
    Inventors: Christian Bergins, Torsten Buddenberg, Emmanouil Kakaras
  • Patent number: 10213734
    Abstract: A method of increasing the overall mass transfer rate of acid gas scrubbing solids is disclosed. Various catalyst compounds for that purpose are also disclosed.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: February 26, 2019
    Inventors: Joseph E. Remias, Cameron A. Lippert, Kunlei Liu
  • Patent number: 10213729
    Abstract: Method of decarbonating a hydrocarbon gas, a natural gas for example, by washing with a solvent. Said gas is contacted with an absorbent solution so as to obtain a CO2-depleted gas and a CO2-laden absorbent solution. The CO2-laden absorbent solution is then heated and expanded at a predetermined pressure and temperature so as to release a hydrocarbon-containing gaseous fraction and to obtain a hydrocarbon-depleted absorbent solution, said pressure and temperature being so selected that said gaseous fraction comprises at least 50% of the hydrocarbons contained in said CO2-laden absorbent solution and at most 35% of the CO2 contained in said CO2-laden absorbent solution. Finally, the hydrocarbon-depleted absorbent solution is thermally regenerated so as to release a CO2-rich gaseous effluent and to obtain a regenerated absorbent solution.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: February 26, 2019
    Inventors: Sebastien Gonnard, Nicolas Laloue, Agnes Leroy, Gauthier Perdu
  • Patent number: 10183865
    Abstract: An apparatus and a combined process for carbon dioxide gas separation, combining the hydrate-based process with the chemical absorption process, which reduces secondary pollution and allows the efficient continuous separation of carbon dioxide gas without increasing the pressure and thereby the operating cost is reduced significantly. The apparatus and combined process can be applied in the separation of carbon dioxide in IGCC synthetic gas, natural gas and biogas, and address the issues of the existing processes such as high energy consumption, low throughput, and secondary pollution.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: January 22, 2019
    Inventors: Xiaosen Li, Chungang Xu, Yisong Yu, Zhaoyang Chen, Ningsheng Huang, Gang Li
  • Patent number: 10150926
    Abstract: A plant comprises a feed gas source, H2S removal unit, first absorber and a second, pressure reduction stages, first and second heat exchangers, stripping unit, and a conduit. The H2S removal unit selectively removes H2S from a feed gas from the feed gas source to produce an H2S depleted feed gas. The first absorber and the second absorber remove CO2 from the H2S depleted feed gas using a semi-lean and an ultralean solvent to produce a product gas and a rich solvent. The plurality of pressure reduction stages generates a cooled flashed solvent. The first heat exchanger and the second heat exchanger use the cooled flashed solvent to cool the H2S depleted feed gas and the semi-lean solvent. The stripping unit strips the flashed solvent with dried air to produce the ultralean solvent, and the conduit combines a portion of the ultralean solvent with the H2S depleted feed gas.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: December 11, 2018
    Assignee: Fluor Technologies Corporation
    Inventor: John Mak
  • Patent number: 10144001
    Abstract: This application is in the field of technologies for desulfurization and demercaptanization of raw gaseous hydrocarbons (including natural gas, tail gas, technological gas, etc, including gaseous media). It can be used for simultaneous dehydration and desulfurization/demercaptanization of any kind of raw gaseous hydrocarbons.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: December 4, 2018
    Inventors: Liudmila Aleksandrovna Tyurina, Alexander Ivanovich Tyurin, Irina Gennadievna Tarkhanova, Alexey Aleksandrovich Tyurin
  • Patent number: 10106411
    Abstract: A method for recovering sulfur from an acid gas feed is provided. The method comprising the steps of mixing the acid gas feed and an absorption process outlet stream to form a combined Claus feed, introducing the combined Claus feed and a sulfur dioxide enriched air feed to a Claus process to produce a Claus outlet gas stream, introducing the Claus outlet gas stream to a thermal oxidizer, treating the thermal oxidizer outlet stream in a gas treatment unit to produce a dehydrated stream, introducing the dehydrated stream to a membrane sweeping unit to produce a sweep membrane residue stream and a sulfur dioxide enriched air feed, introducing a sweep air stream to a permeate side of the membrane sweeping unit, and introducing the sweep membrane residue stream to a sulfur dioxide absorption process to produce the absorption process outlet stream and a stack feed.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: October 23, 2018
    Inventors: Jean-Pierre R. Ballaguet, Milind M. Vaidya, Iran D. Charry-Prada, Sebastien A. Duval, Feras Hamad, John P. O'Connell, Rashid M. Othman
  • Patent number: 10074884
    Abstract: A metal air battery having an air purification module and a method of operating the metal air battery, the metal air battery including: a battery cell module configured to generate electricity using oxidation of a metal and reduction of oxygen; an air purification module including a first adsorption unit and being configured to supply air purified by the first adsorption unit to the battery cell module, the first adsorption unit being configured to adsorb an impurity; and a detection module configured to detect a concentration of the impurity, wherein the air purification module further includes a recycling unit configured to desorbs the impurity adsorbed into the first adsorption unit; and a controller configured to control an operation of the recycling unit based on the concentration of the impurity detected by the detection module.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: September 11, 2018
    Inventors: Jeongsik Ko, Hyukjae Kwon, Dongmin Im
  • Patent number: 10000713
    Abstract: A plant includes a pretreatment unit for H2S removal and air dehydration, and at least two absorbers that receive a feed gas at a pressure of at least 300 psig with variable CO2 content (e.g., between 5 to 60 mol %), wherein the feed gas is scrubbed in the absorbers with an ultralean and a semi-lean physical solvent, respectively, at low temperatures to at least partially remove the CO2 from the feed gas. Such configurations produces a low CO2 dry treated gas and a H2S-free CO2 for sequestration while advantageously providing cooling by expansion of the rich solvent that cools the semi-lean solvent and the feed gas, wherein an ultralean solvent is produced by stripping using dry air.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: June 19, 2018
    Assignee: Fluor Technologies Corporation
    Inventor: John Mak
  • Patent number: 9975105
    Abstract: A system for producing an oxygenate, comprising: a desulfurization apparatus for contacting a raw material gas comprising hydrogen and carbon monoxide with a desulfurizing agent comprising copper; and a synthesis apparatus for contacting the raw material gas treated by the desulfurizing apparatus with an oxygenate-synthesis catalyst comprising rhodium.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: May 22, 2018
    Inventors: Toshihito Miyama, Tomoaki Nishino, Osamu Okada, Tamotsu Nonouchi
  • Patent number: 9943802
    Abstract: A method for removing sulfur-containing compounds from a sulfur recovery unit (SRU) tail gas stream includes the steps of introducing the SRU tail gas stream to a reducing unit to produce a membrane feed, the reducing unit configured to reduce the sulfur-containing compounds to hydrogen sulfide, introducing the membrane feed to a hydrogen sulfide membrane unit, the hydrogen sulfide membrane unit comprising a membrane, wherein the membrane feed comprises hydrogen sulfide, allowing the membrane feed to contact a feed side of the membrane such that hydrogen sulfide permeates through the membrane to a permeate side, and collecting the retentate gases that fail to permeate through the membrane to produce a stack feed, wherein the stack feed comprises retentate gases.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: April 17, 2018
    Inventors: Jean-Pierre R. Ballaguet, Milind M. Vaidya, Feras Hamad, Sebastien A. Duval, Iran D. Charry-Prada
  • Patent number: 9931594
    Abstract: A process for removing acid gases from a water vapor-containing fluid stream comprises a) providing an absorption liquid which is incompletely miscible with water; b) treating the fluid stream in an absorption zone with the absorption liquid to obtain an acid gas-depleted treated fluid stream and an acid gas-loaded absorption liquid; c) directing the treated fluid stream to a rehydration zone and treating the fluid stream with an aqueous liquid to volatilize at least part of the aqueous liquid; d) regenerating the loaded absorption liquid to expel the acid gases at least in part and obtain a regenerated absorption liquid, and directing the regenerated absorption liquid to step b); and e) separating, from the absorption liquid, an aqueous liquid that has condensed in the absorption zone, and directing the aqueous liquid to step c). The process allows for an efficient removal of water accumulated in the absorption liquid system.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: April 3, 2018
    Assignee: BASF SE
    Inventors: Torsten Katz, Christian Riemann, Georg Sieder
  • Patent number: 9915424
    Abstract: A coal fired Oxy boiler power plant with a condensate system, combustion system and post combustion CO2 capture plant configured and arranged to remove CO2 from a flue gas stream generated in the combustion system. The condensation system includes a plurality of serial low pressure heaters arranged in flow series downstream of the pump and at least one parallel low pressure heater arranged fluidly parallel to at least one of the serial low pressure heaters. Flue Gas Heat Recovery System, Flue Gas Condenser and Gas Processing unit are thermally integrated into the condensate system.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: March 13, 2018
    Inventors: Thierry Pourchot, Francois Granier, Frederic Geiger
  • Patent number: 9856141
    Abstract: A method of producing syngas comprising receiving raw syngas from a gasification unit; introducing the raw syngas and water to a syngas scrubber to produce unshifted syngas; introducing a first portion of unshifted syngas to a first cooling unit to produce cooled unshifted syngas and a first aqueous condensate comprising cyanide in an amount of 5-200 ppmw; recycling the first aqueous condensate to the syngas scrubber; introducing a second portion of unshifted syngas to a water gas shift unit to produce shifted syngas; introducing the shifted syngas to a second cooling unit to produce cooled shifted syngas and a second aqueous condensate comprising cyanide in an amount of less than 2.5 ppmw; contacting the cooled shifted syngas with the cooled unshifted syngas to produce modified syngas; and introducing the second aqueous condensate to a sour water stripper to produce stripped water and an acid gas comprising H2S, CO2, and ammonia.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: January 2, 2018
    Assignee: Fluor Technologies Corporation
    Inventors: Ravi Ravikumar, Patrick Goodman, Sanjiv Dabee
  • Patent number: 9839875
    Abstract: A solvent system comprising an ionic Liquid formed from a relatively acidic component and a nitrogenous base for the removal of acid gases from mixed gas streams is provided. Also provided is a process for removing acid gases from mixed gas streams using the disclosed solvent system. The solvent system may be utilized within a gas processing system.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: December 12, 2017
    Assignee: Research Triangle Institute
    Inventors: Marty Lail, Luke Coleman
  • Patent number: 9821286
    Abstract: Disclosed is a transportable reformer for the catalytic primary reforming of hydrocarbons using steam at elevated pressure, comprising a reforming tube system, a furnace disposed about the reforming tube system, a plurality of manifolds in communication with the reformer tubes, a plurality of flue gas tunnels disposed beneath and in gaseous communication with the furnace, wherein each of the manifolds is integrally coupled to, disposed between, and supported by the opposing outer walls of an adjacent pair of flue gas tunnels such that the reformer is configured to be transportable as a single unit without additional support structures.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: November 21, 2017
    Inventors: Oliver Meissner, Falk Beyer
  • Patent number: 9808755
    Abstract: Methods and apparatuses for separating CO2 and sulfur-containing compounds from a synthesis gas obtained from gasification of a carbonaceous feedstock. The primary separating steps are performed using a sour pressure swing adsorption (SPSA) system, followed by an acid gas enrichment system and a sulfur removal unit. The SPSA system includes multiple pressure equalization steps and a rinse step using a rinse gas that is supplied from a source other than directly from one of the adsorber beds of the SPSA system.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: November 7, 2017
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Shubhra Jyoti Bhadra, Andrew David Wright, Jeffrey Raymond Hufton, Jeffrey William Kloosterman, Fabrice Amy, Edward Landis Weist, Jr.
  • Patent number: 9808789
    Abstract: The invention relates to methods for regenerating a used sorbent having a gas adsorbate adsorbed thereto. In particular, the used sorbent comprises liquid marbles. The liquid in the liquid marbles is comprised of a material or mixture of materials that selectively removes unwanted gaseous component in the gas to be purified.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: November 7, 2017
    Assignee: Agency for Science, Technology and Research
    Inventors: Jia Min Chin, Jin Yang, Han Yang Tan, Yin Ngai Sum, Siok Wei Tay
  • Patent number: 9789438
    Abstract: An air pollution control apparatus includes: a denitration unit that removes nitrogen oxides from a flue gas; a desulfurization unit that is installed on a gas flow downstream side of the denitration unit to remove the sulfur oxides in a flue gas 11B; a finish denitration and desulfurization unit that is installed on the gas flow downstream side of the desulfurization unit to perform finish denitration and desulfurization of NO2 and SO2; and a carbon dioxide recovery unit that is installed on the gas flow downstream side of the finish denitration and desulfurization unit to remove and recover the carbon dioxide in a flue gas.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: October 17, 2017
    Inventors: Tsuyoshi Oishi, Hiroshi Tanaka, Naohiko Ukawa
  • Patent number: 9764273
    Abstract: A system for absorbing and separating acid gases may include an absorbing tower in which a gas containing an acid gas is supplied, a recycling tower that is disposed close to the absorbing tower, an absorbent that absorbs an acid gas in the absorbing tower and discharges the acid gas back to the recycling tower while circulating through the absorbing tower and the recycling tower, and a condenser that is connected to the recycling tower and condenses an acid gas produced in the recycling tower, wherein a centrifugal separator that separates the absorbent, using a centrifugal force, is disposed at a lower portion in the absorbing tower.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: September 19, 2017
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Korea Institute of Energy Research
    Inventors: Shin-Tae Bae, Yeoil Yoon, Sungchan Nam, Soonkwan Jung, Sungyeoul Park, Ilsoo Chun, Youngeun Kim
  • Patent number: 9764274
    Abstract: A method for treatment of a flue gas involves feeding the flue gas and a lean solvent to an absorber. The method further involves reacting the flue gas with the lean solvent within the absorber to generate a clean flue gas and a rich solvent. The method also involves feeding the clean flue gas from the absorber and water from a source, to a wash tower to separate a stripped portion of the lean solvent from the clean flue gas to generate a washed clean flue gas and a mixture of the water and the stripped portion of the lean solvent. The method further involves treating at least a portion of the mixture of the water and the stripped portion of the lean solvent via a separation system to separate the water from the stripped portion of the lean solvent.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: September 19, 2017
    Assignee: General Electric Company
    Inventors: Irina Pavlovna Spiry, Benjamin Rue Wood, Surinder Prabhjot Singh, Robert James Perry, John Brian McDermott
  • Patent number: 9757681
    Abstract: The present invention relates to a system and a method therefor capable of reducing the amount of heat which must be supplied to a regeneration tower for regenerating an absorbent in an acid gas capture process for such acid gas as carbon dioxide and provides a low energy-type acid gas capture system and method using recirculation of an absorbent capable of reducing energy consumption by recirculating the absorbent, from which acid gas has been pre-separated, to an absorption tower before supplying the absorbent to the regeneration tower in an acid gas capture system.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: September 12, 2017
    Inventors: Il Hyun Baek, Jong Kyun You, Ki-Tae Park, JeongnNam Kim, SungYoun Kim
  • Patent number: 9651199
    Abstract: A method and system for supplying additional hydrogen from a reservoir of stored hydrogen in a salt cavern to a hydrogen pipeline to assist in meeting customer demand for hydrogen is provided. Contaminants introduced while the stored hydrogen stream is in the salt cavern may cause the crude hydrogen stream to not have the required product purity specification. The stored hydrogen is removed from the salt cavern as a crude hydrogen stream and thereafter diluted with higher purity hydrogen formed from the pipeline to form a hydrogen product stream at or below the product purity specification. The hydrogen product can be formed without removal of any of the contaminants in the crude stream, thereby creating a more cost effective and simplified supply process compared to conventional processes employing a salt cavern for hydrogen supply.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: May 16, 2017
    Inventors: Rommel M. Oates, Solomon Dadebo
  • Patent number: 9636628
    Abstract: Disclosed is an aqueous solution for absorbing and recovering carbon dioxide from a carbon dioxide-containing gas, the aqueous solution containing an amino alcohol compound represented by Formula 1 and an amine compound represented by Formula 2, wherein R represents an alkyl group having 1 to 5 carbon atoms; and n represents 1 or 2, wherein X represents —NR1R2; Y represents —NR3R4; R1, R2, R3 and R4 may be the same or different, and each represents an alkyl group having 1 to 3 carbon atoms; and m represents an integer of 3 to 7.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: May 2, 2017
    Assignees: Research Institute of Innovative Technology for the Earth, Nippon Steel & Sumitomo Metal Corporation
    Inventors: Takayuki Higashii, Firoz A. Chowdhury, Kazuya Goto, Masami Onoda, Yoichi Matsuzaki
  • Patent number: 9616374
    Abstract: A process is provided for the removal of impurities from the exhaust gases being emitted from a power generation plant. A multi-stage temperature based separation system is being utilized. The removal of undesirable compounds/elements is accomplished by directing the exhaust gases from the power plant through a first stage cooling unit to lower the temperature of the exhaust gases to a first predetermined level that is below the boiling point of one or more of the undesired compounds/elements, diverting the resulting liquid to storage, directing the gas to a second stage cooling unit to further lower the temperature of the exhaust gases to a second predetermined level that is below the boiling point of several more of the undesired compounds/elements. The resulting exhaust gas is a very clean syngas that may be used in various commercial applications.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: April 11, 2017
    Inventor: Lai O. Kuku
  • Patent number: 9611762
    Abstract: A fossil fuel fired power plant for the generation of electrical energy comprises a water steam cycle and a plant (10) for the capture of CO2 from exhaust gases emitted by the power plant and a steam jet ejector (24) configured and arranged to receive an input steam flow from a low- or intermediate pressure extraction point in the power plant and to increase its pressure. It is further arranged to receive motive steam (25) from a further extraction point in the power plant. A steam line (27, 22) directs the steam of increased pressure from the steam jet ejector (24) to the CO2 capture plant (10). The power plant according to this invention allows the use of low-pressure steam for the operation of the CO2 capture plant, where the extraction of such steam affects the overall efficiency of the power plant to a lesser degree than in power plant of the state of the art.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: April 4, 2017
    Assignee: General Electric Technology GmbH
    Inventors: Staffan Jönsson, Hongtao Li, Enrico Conte
  • Patent number: 9597631
    Abstract: Apparatus for removing ammonia from a gas stream includes primary and secondary scrubbers each of which includes a gas inlet, a gas outlet, and a slurry atomizer. The gas inlet of the primary scrubber is operatively connected to a gas stream having ammonia contained therein. A primary slurry feed system operatively connected to the slurry atomizer of the primary scrubber feeds to the slurry atomizer a primary slurry composition of a molybdic acid at a pH level. The gas inlet of the secondary scrubber is operatively connected to the gas outlet of the primary scrubber. A secondary slurry feed system operatively connected to a slurry atomizer of the secondary scrubber feeds to the slurry atomizer a secondary slurry composition of a molybdic acid at pH level. The pH level of the secondary slurry composition is lower than the pH level of the primary slurry composition.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: March 21, 2017
    Assignee: Climax Molybdenum Company
    Inventor: Joel A. Taube
  • Patent number: 9574476
    Abstract: This disclosure relates generally to vehicles with reduced emissions. More particularly, this disclosure relates to systems, methods, and apparatuses related to vehicles with reduced carbon dioxide emissions. The carbon dioxide emissions may be stored in a carbon dioxide clathrate.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: February 21, 2017
    Assignee: ELWHA LLC
    Inventors: Roderick A. Hyde, Lowell L. Wood, Jr.
  • Patent number: 9555363
    Abstract: An absorber of a carbon dioxide capture system according to an embodiment includes: a release region for releasing carbon dioxide from an absorbing liquid supplied from a stripper; and a second gas-liquid contact unit to which carbon dioxide released in the release region is supplied together with exhaust gas discharged from a first gas-liquid contact unit. The absorbing liquid having released the carbon dioxide therefrom in the release region is supplied to the second gas-liquid contact unit by an absorbing liquid supply device. The absorbing liquid having passed through the second gas-liquid contact unit is guided to the first gas-liquid contact unit while bypassing the release region. The second gas-liquid contact unit brings the exhaust gas and the absorbing gas into contact with each other so as to cause the carbon dioxide contained in the exhaust gas to be absorbed in the absorbing liquid.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: January 31, 2017
    Inventors: Masatoshi Hodotsuka, Satoshi Saito, Mitsuru Udatsu
  • Patent number: 9533258
    Abstract: A formulation and process for capturing CO2 use an absorption mixture containing water, biocatalysts and a carbonate compound. The process includes contacting a CO2-containing gas with the absorption mixture to enable dissolution and transformation of CO2 into bicarbonate and hydrogen ions, thereby producing a CO2-depleted gas and an ion-rich solution, followed by subjecting the ion-rich solution to desorption. The biocatalyst improves absorption of the mixture comprising carbonate compounds and the carbonate compound promotes release of the bicarbonate ions from the ion-rich solution during desorption, producing a CO2 gas stream and an ion-depleted solution.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: January 3, 2017
    Assignee: C02 SOLUTIONS INC.
    Inventors: Sylvie Fradette, Julie Gingras, Jonathan Carley, Glenn R. Kelly, Olivera Ceperkovic
  • Patent number: 9463411
    Abstract: An exhaust gas treatment system comprising: a CO2 chemical absorption equipment comprising an absorption column which absorbs carbon dioxide (CO2) in a combustion exhaust gas discharged from a combustion device with the use of an absorbing solution comprising an amine compound as a main component and a regeneration column which regenerates the absorbing solution by desorbing CO2 from the absorbing solution which absorbed CO2; a flash tank which depressurizes the absorbing solution withdrawn from a lower part of the regeneration column to flash-evaporate the absorbing solution; a vapor recompression equipment which compresses the vapor generated by the flash tank; a temperature control device which adjusts the vapor compressed by the vapor recompression equipment to be within a predetermined temperature; and a piping for feeding the vapor adjusted to the predetermined temperature by the temperature control device to the regeneration column.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 11, 2016
    Inventors: Noriaki Taniguchi, Jun Shimamura, Toshio Katsube, Hideaki Higashi
  • Patent number: 9464571
    Abstract: A fossil fuel-fired power station having a removal apparatus for carbon dioxide which is located downstream of a combustion facility and through which an offgas containing carbon dioxide may flow is provided. The removal apparatus comprises an absorption unit and a desorption unit. The desorption unit is connected to a renewable energy source.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: October 11, 2016
    Inventors: Hermann Kremer, Nicolas Vortmeyer
  • Patent number: 9416683
    Abstract: According to one embodiment, a carbon-dioxide-recovery-type steam power generation system comprises a boiler that produces steam and generates an exhaust gas, a first turbine that is rotationally driven by the steam, an absorption tower allows carbon dioxide contained in the exhaust gas to be absorbed into an absorption liquid, a regeneration tower that discharges the carbon dioxide gas from the absorption liquid supplied from the absorption tower, a condenser that removes moisture from the carbon dioxide gas, discharged from the regeneration tower, by condensing the carbon dioxide gas using cooling water, a compressor that compresses the carbon dioxide gas from which the moisture is removed by the condenser, and a second turbine that drives the compressor. The steam produced by the cooling water recovering the heat from the carbon dioxide gas in the condenser is supplied to the first turbine or the second turbine.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: August 16, 2016
    Inventors: Yuya Murakami, Nobuo Okita, Takeo Takahashi, Mikio Takayanagi, Takeo Suga, Takeshi Sasanuma, Toshihisa Kiyokuni, Hideo Kitamura