Amine Patents (Class 423/228)
  • Patent number: 10717038
    Abstract: Disclosed is an absorbing liquid for separating and capturing carbon dioxide from a carbon dioxide-containing gas, the absorbing liquid containing: at least one alkanolamine represented by formula (1) wherein R1 represents hydrogen or C1-4 alkyl, R2 and R3 are identical or different and each represent hydrogen or C1-3 alkyl, R1, R2, and R3 are not all hydrogen, and n is 1 or 2; a low-molecular-weight diol compound and/or glycerin; and water.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: July 21, 2020
    Assignees: RESEARCH INSTITUTE OF INNOVATIVE TECHNOLOGY FOR THE EARTH, NIPPON STEEL CORPORATION
    Inventors: Firoz Alam Chowdhury, Tsuguhiro Kato, Yoichi Matsuzaki, Masami Onoda
  • Patent number: 10688435
    Abstract: An environmental control system includes an air conditioning subsystem and a contaminant removal subsystem downstream of the environment to be conditioned. The contaminant removal subsystem includes a first gas-liquid contactor-separator, a second gas-liquid contactor-separator, and a third gas-liquid contactor-separator. One of the first, the second, and the third gas-liquid contactor-separators is configured to receive used absorbent liquid having at least a first contaminant and discharge at least a first contaminant for recovery and reuse. Another of the first, the second and the third gas-liquid contactor-separators is configured to receive used absorbent liquid having at least a second contaminant and discharge at least the second contaminant for recovery and reuse.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: June 23, 2020
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Phoebe Henson, Stephen Yates, Jun Isobe, Rebecca Kamire
  • Patent number: 10662061
    Abstract: Embodiments of the disclosure provide a method and a Claus tail gas treatment system for sulfur recovery. A tail gas stream is fed to a hydrogenation reactor to produce a hydrogenated gas stream by converting sulfur-containing compounds to hydrogen sulfide. The hydrogenated gas stream is fed to a quench tower to produce a quenched gas stream by condensing and recovering liquid water via a water condensate stream. The quenched gas stream is fed to a first stage adsorption unit to produce a first outlet gas stream by separating water via a first byproduct stream from hydrogen sulfide, carbon dioxide, and nitrogen. The first outlet stream is fed to a second stage adsorption unit to produce a second outlet gas stream by separating carbon dioxide and nitrogen via a second byproduct stream. The second outlet stream includes hydrogen sulfide. The second outlet stream can be fed to a Claus unit.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: May 26, 2020
    Assignee: SAUDI ARABIAN OIL COMPANY
    Inventors: Georgios Lithoxoos, Yuguo Wang, Rashid Othman
  • Patent number: 10639584
    Abstract: A system for carbon dioxide capture from a gas mixture comprises a lean solvent comprising 3-amino-1-propanol (AP), 2-dimethylamino-2-methyl-1-propanol (DMAMP), and water; an absorber containing at least a portion of the lean solvent, wherein the absorber is configured to receive the lean solvent and a gaseous stream comprising carbon dioxide, contact the lean solvent with the gaseous stream, and produce a rich solvent stream and a gaseous stream depleted in carbon dioxide; a stripper, wherein the stripper is configured to receive the rich solvent stream; a cross-exchanger fluidly coupled to a rich solvent outlet on the absorber and a rich solvent inlet on the stripper; a reboiler fluidly coupled to a lower portion of the stripper; and a condenser fluidly coupled to a vapor outlet of the stripper.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: May 5, 2020
    Assignee: Fluor Technologies Corporation
    Inventors: Paul M. Mathias, Satish Reddy, Joseph Yonkoski
  • Patent number: 10625200
    Abstract: A carbon dioxide absorbent of an embodiment includes a chain amine, a cyclic amine, and an acid. The chain amine is a compound expressed by Formula (1) of FIG. 1. R1 in Formula (1) is hydrogen or an alkyl chain having at least one hydroxyl group and 1 to 7 carbon atoms. R2 in Formula (1) is an alkyl chain having at least one hydroxyl group and 1 to 7 carbon atoms. R3 in Formula (1) is hydrogen, a straight alkyl chain having 1 to 7 carbon atoms, a branched alkyl chain having 1 to 7 carbon atoms, or a cyclic alkyl chain having 5 to 7 carbon atoms.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: April 21, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akiko Suzuki, Asato Kondo, Takashi Kuboki, Shinji Murai, Mitsuru Udatsu
  • Patent number: 10610820
    Abstract: Provided are: a wet desulfurization apparatus 13 which removes sulfur oxides in flue gas 12A from a boiler 11; a mist collection/agglomeration apparatus 14 which is provided on a downstream side of the desulfurization apparatus 13 and forms agglomerated SO3 mist by causing particles of SO3 mist contained in flue gas 12B from the wet desulfurization apparatus 13 to be bonded together and have bloated particle sizes; a CO2 recovery apparatus 18 constituted by a CO2 absorption tower 16 having a CO2 absorption unit 16A which removes CO2 contained in flue gas 12D by being brought into contact with a CO2 absorbent and an absorbent regeneration tower 17 which recovers CO2 by releasing CO2 from the CO2 absorbent having absorbed CO2 and regenerates the CO2 absorbent; and a mist collection unit 16C which collects CO2 absorbent bloated mist bloated by the CO2 absorbent being absorbed by the agglomerated SO3 mist in the CO2 absorption unit 16A.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: April 7, 2020
    Assignees: MITSUBISHI HEAVY INDUSTRIES ENGINEERING, LTD., MITSUBISHI HITACHI POWER SYSTEMS ENVIRONMENTAL SOLUTIONS, LTD.
    Inventors: Takuya Hirata, Hiromitsu Nagayasu, Yasutoshi Ueda, Tomoki Noborisato, Takao Tanaka, Masaya Kato
  • Patent number: 10550309
    Abstract: Systems, compositions, and methods for synergistic additives for use in the scavenging of sulfur-containing compounds encountered in oilfield operations are provided. In one embodiment, the methods comprise injecting a sulfide scavenging additive that does not comprise a significant amount of an aldehyde into at least a portion of a subterranean formation where one or more sulfur-containing species are present; and injecting a synergistic additive comprising at least one base into at least the portion of the subterranean formation.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: February 4, 2020
    Assignee: Multi-Chem Group, LLC
    Inventors: Liu Shi, Funian Zhao, Liangwei Qu, Edward Corrin
  • Patent number: 10537851
    Abstract: A method and apparatus to capture carbon dioxide from combustion products in a flue gas, using replenishable anhydrous metal hydroxides, and capturing heat from an exothermic reaction of the carbon dioxide with the anhydrous metal hydroxides re-use in another heat using system.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: January 21, 2020
    Inventor: Jaeson Cardiff
  • Patent number: 10532317
    Abstract: Corrosion in a CO2 removal system is reduced or even entirely avoided by use of a metal ion chelator unit that removes metal ions, and especially iron ions from an amine solvent to a level of equal or less than 1 mg/l without substantially binding heat stable salts.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: January 14, 2020
    Assignee: Fluor Technologies Corporation
    Inventors: Satish Reddy, Joseph Yonkoski
  • Patent number: 10507927
    Abstract: An environmental control system (ECS) includes an air conditioning pack that receives outside air; a regenerative treatment subsystem, wherein the treatment subsystem includes a treatment bed configured to cycle between an adsorption phase and a desorption phase; and a fan that receives recirculated air from the environment and moves the recirculated air to a mixing manifold.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: December 17, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Jan Ludvik, Peter M. Michalakos
  • Patent number: 10494270
    Abstract: The invention provides an efficient method to purify an aqueous solution, typically mine drainage water, especially of anions and cations present in the aqueous solution as dissolved solids, the anions and cations are removed by treatment with a positively charged extractant having at least eight carbon atoms, whereby an unstable emulsion is formed; the unstable emulsion is allowed to break into an extract phase loaded with the anions and cations, and a water phase depleted in anions and cations; a floc inherently forms in the loaded extractant phase and then the loaded extractant phase and floc are separated from the purified water and treated to remove the anions and cations as concentrated useful products; the treated aqueous phase now reduced in anion and/or cation content is also separated from the emulsion as a purified aqueous solution. The extractant phase is preferably recycled. A continuous water purification process is provided.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: December 3, 2019
    Assignee: Winner Water Services, Inc.
    Inventors: Bruce F. Monzyk, F. Michael Von Fahnestock, James K. Rose, H. Nick Conkle, Ming Wang, Satya P. Chauhan, Ruey K. Bruce, Tenisha Highsmith
  • Patent number: 10449481
    Abstract: A CO2 recovery unit and a CO2 recovery method capable of having an excellent CO2 absorption rate and saving energy are provided. A CO2 recovery unit of the invention includes: a CO2 absorber which includes an upper CO2 absorption unit obtaining a CO2 absorbent by causing a flue gas containing CO2 to contact a CO2 absorbent and a lower CO2 absorption unit obtaining a CO2 absorbent by causing the CO2 absorbent to contact a flue gas containing CO2; a CO2 absorbent regenerator which obtains the CO2 absorbent by heating the CO2 absorbent a thermometer which measures a temperature of the CO2 absorbent supplied from the CO2 absorber to the CO2 absorbent regenerator; and a control device which controls a temperature of the CO2 absorbent supplied to the lower CO2 absorption unit based on the temperature of the CO2 absorbent measured by the thermometer.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: October 22, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINEERING, LTD.
    Inventors: Atsuhiro Yukumoto, Takuya Hirata, Hiroshi Tanaka, Akiyori Hagimoto, Haruaki Hirayama, Tsuyoshi Oishi
  • Patent number: 10427094
    Abstract: A membrane permeation system and process accommodates varying acid gas inlet concentrations over time while utilizing only the initially installed equipment and still maintaining the non-permeate gas specification. The system and process provide flexibility to operate efficiently over a wide range of inlet CO2 concentrations by adjustments to primary permeate, secondary permeate, and recycle gas operations. The glassy polymer membrane devices used in the system and process are selected so removal duty efficiency increases as acid gas concentration increase. Designing the system and process to handle about a 15% increase in acid gas concentrations over initial conditions effectively treats acid gas concentrations well above that 15% increase, thereby eliminating the need for additional equipment or for additional downstream amines and physical solvents.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: October 1, 2019
    Assignee: Cameron Solutions, Inc.
    Inventor: Richard D. Peters
  • Patent number: 10363517
    Abstract: Disclosed are systems and methods for producing oil and gas in a plant while removing hydrogen sulfide and water from fluids produced from oil and gas reservoirs and injecting a sour gas stream containing the hydrogen sulfide into an underground formation. Water-selective membranes are used to debottleneck known systems and methods by removing water from bottlenecked sections of the plant including pretreatment of a sour gas feed to one or more gas processing plants. In other aspects, water-selective membranes are used to debottleneck the pretreatment of an acid gas feed to a Claus unit to convert hydrogen sulfide to sulfur in a gas processing plant. The water-selective membranes pretreat the acid gas feed.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: July 30, 2019
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Nitesh Bhuwania, Shabbir Husain, Daniel Chinn, Ronald P. MacDonald, Tapan K. Das
  • Patent number: 10350542
    Abstract: A system and a method for industrial plant or utility plant flue gas desulfurization, with zero waste water liquid discharge from a wet flue gas desulfurization system utilized therein, are disclosed herein. The wet flue gas desulfurization system is supplied an absorption liquid for contact with a flue gas to absorb flue gas acid gases. Waste water from the wet flue gas desulfurization system is heated under pressure in a heat exchanger to produce heated waste water, which is supplied to a flash vessel to produce steam. The produced steam is supplied to the flue gas upstream of a particulate collection system and the wet flue gas desulfurization system, supplied to the flue gas upstream of the wet flue gas desulfurization system, or supplied to absorption liquid circulated to the wet flue gas desulfurization system.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: July 16, 2019
    Assignee: General Electric Company
    Inventor: Sanjay Kumar Dube
  • Patent number: 10322366
    Abstract: Wet-type carbon dioxide capturing equipment includes a CO2 absorption tower where CO2 of an exhaust gas reacts with an absorbent, a CO2 stripping tower where CO2 is separated from a rich solution absorbed the CO2 in the CO2 absorption tower, a reboiler for supplying thermal energy to the CO2 stripping tower to separate the CO2 from the rich solution in the CO2 stripping tower, a first heat exchanger for heating the rich solution by exchanging heat between a lean solution having the CO2 separated therefrom in the CO2 stripping tower and the rich solution, a mechanical vapor recompressor (MVR) for compressing a CO2 gas separated in the CO2 stripping tower, and a second heat exchanger for separating a portion of CO2 from the rich solution by heating the rich solution by exchanging heat between the CO2 gas compressed in the MVR and the rich solution passing through the first heat exchanger, in which the rich solution having CO2 that is not separated in the second heat exchanger is input to the CO2 stripping tower
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: June 18, 2019
    Assignee: KEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.
    Inventors: Young Ill Lee, Tea Young Lim, Seong Pill Cho, Eun Kyu Choi, Sung Mun Yoon
  • Patent number: 10308765
    Abstract: Methods of forming nanoporous materials are described herein that include forming a polymer network with a chemically removable portion. The chemically removable portion may be polycarbonate polymer that is removable on application of heat or exposure to a base, or a polyhexahydrotriazine (PHT) or polyhemiaminal (PHA) polymer that is removable on exposure to an acid. The method generally includes forming a reaction mixture comprising a formaldehyde, a solvent, a primary aromatic diamine, and a diamine having a primary amino group and a secondary amino group, the secondary amino group having a base-reactive substituent, and heating the reaction mixture to a temperature of between about 50 deg C. and about 150 deg C. to form a polymer. Removing any portion of the polymer results in formation of nanoscopic pores as polymer chains are decomposed, leaving pores in the polymer matrix.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: June 4, 2019
    Assignee: International Business Machines Corporation
    Inventors: Dylan J. Boday, Jeannette M. Garcia, James L. Hedrick, Rudy J. Wojtecki
  • Patent number: 10279306
    Abstract: A method for separating gaseous carbon dioxide from a mixture by cyclic adsorption/desorption using a unit containing an adsorber structure with sorbent material, wherein the method comprises the following steps: (a) contacting said mixture with the sorbent material to allow said gaseous carbon dioxide to adsorb under ambient conditions; (b) evacuating said unit to a pressure in the range of 20-400 mbarabs and heating said sorbent material to a temperature in the range of 80-130° C.; and (c) re-pressurization of the unit to ambient atmospheric pressure conditions and actively cooling the sorbent material to a temperature larger or equal to ambient temperature; wherein in step (b) steam is injected into the unit to flow-through and contact the sorbent material under saturated steam conditions, and wherein the molar ratio of steam that is injected to the gaseous carbon dioxide released is less than 20:1.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: May 7, 2019
    Assignee: CLIMEWORKS AG
    Inventors: Christoph Gebald, Nicolas Repond, Jan Andre Wurzbacher
  • Patent number: 10202336
    Abstract: Plant for the synthesis of urea, comprising: a synthesis section comprising at least one reactor, a compressor for supplying CO2 to said synthesis section, a gas turbine for the operation of said CO2 compressor and a heat recovery steam generator; the heat source of said heat recovery steam generator consists of the exhaust gases of said gas turbine, and at least one steam flow produced by said heat recovery steam generator is used as heat source for at least one component of said urea plant.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: February 12, 2019
    Assignee: Casale SA
    Inventor: Andrea Scotto
  • Patent number: 10201776
    Abstract: An absorption type carbon dioxide removal/concentration apparatus has a honeycomb rotor which holds an amine support solid absorbent. The honeycomb rotor is divided into at least a processing zone and a reproduction zone. An enthalpy (temperature and humidity) adjustment device is provided for the air for reproduction and/or the air to be processed. The apparatus can control the carbon dioxide absorbing performance and the concentration performance by passing processing and reproduction air through the corresponding zones. The absorption type carbon dioxide removal/concentration apparatus can remove or condense carbon dioxide, can secure high recovery efficiency and can prevent a thermal deterioration of the amine absorbent to extend the life-span of the apparatus.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: February 12, 2019
    Assignee: SEIBU GIKEN CO., LTD.
    Inventors: Ayako Kuroda, Koji Inoue, Hiroshi Okano
  • Patent number: 10159962
    Abstract: Catalysts for oxidative sulfur removal and methods of making and using thereof are described herein. The catalysts contain one or more reactive metal salts dispersed on one or more substrates. Suitable reactive metal salts include those salts containing multivariable metals having variable valence or oxidation states and having catalytic activity with sulfur compounds present in gaseous fuel streams. In some embodiments, the catalyst contains one or more compounds that function as an oxygen sponge under the reaction conditions for oxidative sulfur removal. The catalysts can be used to oxidatively remove sulfur-containing compounds from fuel streams, particularly gaseous fuel streams having high sulfur content.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: December 25, 2018
    Assignee: INTRAMICRON, INC.
    Inventors: Hongyun Yang, Paul S. Dimick
  • Patent number: 10125018
    Abstract: The present invention provides a method for producing a syngas stream, the method at least comprising the steps of: (a) providing a hydrocarbon-containing stream; (b) providing a reactor containing a heated mass of solids at a temperature of at least 1000° C.; (c) cracking the hydrocarbon-containing stream provided in step (a) in the reactor containing the heated mass of solids provided in step (b), thereby at least obtaining C and H2; (d) removing an H2-containing stream from the reactor; (e) converting the C obtained in step (c) in the reactor at an H2O/CO2 vol. % feed ratio of greater than zero, thereby obtaining a CO/H2-containing stream; (f) removing the CO/H2-containing stream from the reactor; (g) combining the H2-containing stream removed in step (d) with the CO/H2-containing stream removed in step (f) thereby obtaining a syngas stream.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: November 13, 2018
    Assignee: SHELL OIL COMPANY
    Inventors: Ronald Jan Schoonebeek, Alouisius Nicolaas Renée Bos
  • Patent number: 10000383
    Abstract: A CO2 recovery apparatus capable of recovering CO2 by using only a low-quality exhaust heat at 100° C. or less is provided. The present invention includes an absorption tower for allowing a basic aqueous solution to absorb CO2; and a regenerator for heating a basic aqueous solution with CO2 absorbed therein using a heating medium having a temperature of 100° C. or less, thereby desorbing CO2.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: June 19, 2018
    Assignee: THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Tsunenori Watanabe, Tetsuo Sasaki, Michio Hirose, Yasuyuki Yagi, Hiroshi Deguchi
  • Patent number: 9975080
    Abstract: Exemplary embodiments relate to methods for removal of CO2 and other acid gases from gaseous fuels prior to combustion. Exemplary methods may be used for CO2 capture, H2 purification and natural gas sweetening. Exemplary methods use at least one ionic liquid that has excellent CO2 solubility, selectivity over hydrogen, low viscosity, and resistance to H2S.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: May 22, 2018
    Assignee: U.S. Department of Energy
    Inventors: David Luebke, Hunaid Nulwala, Brian Kail, Fan Shi, Robert L Thompson, Nicholas Siefert
  • Patent number: 9931612
    Abstract: The current invention describes methods and compositions of various sorbents based on aerogels of various silanes and their use as sorbent for carbon dioxide. Methods further provide for optimizing the compositions to increase the stability of the sorbents for prolonged use as carbon dioxide capture matrices.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: April 3, 2018
    Assignee: Aspen Aerogels, Inc.
    Inventors: Redouane Begag, Wendell E Rhine, Wenting Dong
  • Patent number: 9914088
    Abstract: A CO2 recovery unit for recovery and removal of CO2 in a CO2-containing flue gas using a CO2-absorbent within a CO2 absorber is provided. The CO2 absorber includes a CO2-absorbing unit for the absorption of CO2 in a CO2-containing flue gas, a main water rinsing unit that is provided on a gas flow downstream side of the CO2-absorbing unit and that uses rinsing water to recover the accompanying CO2-absorbent while cooling decarbonated flue gas, and a preliminary water rinsing unit provided between the CO2-absorbing unit and the main water rinsing unit. A portion of the rinsing water containing the CO2-absorbent that is circulated in the main water rinsing unit is withdrawn and is subjected to preliminary water rinsing in the preliminary water rinsing unit. The preliminary rinsing water is allowed to meet with a CO2-absorbent while allowing the rinsing water to directly flow down on the CO2-absorbing unit side.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: March 13, 2018
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Hiroshi Tanaka, Hiromitsu Nagayasu, Takuya Hirata, Tsuyoshi Oishi, Takashi Kamijo
  • Patent number: 9908083
    Abstract: An absorption-type carbon dioxide removal/condensing apparatus is removes or condenses carbon dioxide so that the apparatus secures high recovery efficiency. The apparatus has a honeycomb rotor holding a carbon dioxide absorbent, which is divided into at least a processing zone and a reproduction zone. After anyone of reproduction air for heating and a processing air is humidified by a humidifying device, both airs are ventilated into the zones, respectively. Thereby, the apparatus can improve absorption performance and density performance. If the honeycomb rotor is further divided into at least first and second processing zones, an air to be processed is humidified by a humidifier to ventilate into the first processing zone, and then a portion or all of the processing air which passed through the first procession zone is passed through the second procession zone (second pass).
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 6, 2018
    Assignee: SEIBU GIKEN CO., LTD.
    Inventors: Kanae Maruyama, Koji Inoue, Hiroshi Okano, Ayako Kuroda
  • Patent number: 9901845
    Abstract: The invention generally relates to processes for reducing and removing foulant and foulant precursors from regenerated amine mixtures and to equipment useful in such processes. Such amine mixtures are useful for removing one or more acidic gases such as CO2 or H2S from olefin hydrocarbon streams. A first feed comprising regenerated amine, foulant, and foulant precursors is provided. A second feed comprising aromatic hydrocarbons is provided. The first and second feeds are combined and then separated to form first and second products. The first product is an upgraded regenerated amine mixture that comprises the first feed's amine. The second product comprises second feed's aromatic hydrocarbons and a portion of the first feed's foulant.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: February 27, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael A. Radzicki, Richard A. Symes, Asit K. Mondal
  • Patent number: 9901863
    Abstract: A process and system for separating CO2 from a flue gas stream is disclosed. The process involves (a) contacting a flue gas stream containing water vapor and CO2 with an ionic absorbent under absorption conditions to absorb at least a portion of the CO2 from the flue gas stream and form a CO2-absorbent complex; wherein the ionic absorbent comprises a cation and an anion comprising an amine moiety; and (b) recovering a gaseous product having a reduced CO2 content.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: February 27, 2018
    Assignees: Chevron U.S.A. Inc., University of South Alabama
    Inventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, Jr., Kevin N. West, Hye Kyung Timken, Michael S. Driver
  • Patent number: 9895648
    Abstract: A CO2 recovery system includes an absorption tower that brings gas containing CO2 into contact with a CO2 absorption solution to remove CO2 from the CO2-containing gas; a regeneration tower that regenerates a CO2-absorbed rich solution; and a compression device that re-uses a lean solution, from which CO2 has been removed in the regeneration tower, in the absorption tower and compresses CO2 in gas emitted from the regeneration tower, wherein the rich solution has a high pressure, the high-pressure rich solution is subjected to gas-liquid separation by a flash drum, the rich solution as a liquid component separated in the flash drum is introduced into the regeneration tower, and high-pressure CO2 gas as a gas component separated in the flash drum is introduced into a compression device having a predetermined compression pressure.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: February 20, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshio Seiki, Kouji Horizoe, Atsuhiro Yukumoto, Haruaki Hirayama, Masaki Yushima
  • Patent number: 9890183
    Abstract: The present invention is directed to aminosilicone solvent recovery methods and systems. The methods and systems disclosed herein may be used to recover aminosilicone solvent from a carbon dioxide containing vapor stream, for example, a vapor stream that leaves an aminosilicone solvent desorber apparatus. The methods and systems of the invention utilize a first condensation process at a temperature from about 80° C. to about 150° C. and a second condensation process at a temperature from about 5° C. to about 75° C. The first condensation process yields recovered aminosilicone solvent. The second condensation process yields water.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: February 13, 2018
    Assignee: General Electric Company
    Inventors: Irina Pavlovna Spiry, Robert James Perry, Benjamin Rue Wood, Surinder Prabhjot Singh, Rachel Lizabeth Farnum, Sarah Elizabeth Genovese
  • Patent number: 9855525
    Abstract: The present disclosure provides methods and apparatuses of recovering CO2 from a gas stream. The methods regenerate CO2 with high regeneration efficiencies, thereby lowering the overall energy cost for CO2 capture.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: January 2, 2018
    Inventor: Aaron Esser-Kahn
  • Patent number: 9840845
    Abstract: A process of forming a building product can include providing a first layer having a first material, and providing a second layer having a second material that different from the first material, wherein the second layer has pores. The process can further include infiltrating a fluid into the pores of the second layer while the first layer is present and adjacent to the second layer, wherein the fluid includes a carbonate. The process can still further include reacting the carbonate with a metal compound within the second layer to form a metal carbonate within the second layer. In another aspect, a building product can include a first layer having a first material, and a second layer having a second material and a third material that includes a metal carbonate. The first material can be different from the second material, and the second and third materials can include the same metal element.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: December 12, 2017
    Assignee: CERTAINTEED CORPORATION
    Inventors: Husnu M. Kalkanoglu, Gregory F. Jacobs
  • Patent number: 9782720
    Abstract: A degradant concentration measurement device 14 according to the invention has an electric conductivity measurement instrument 71A measuring the electric conductivity of a lean solution 16 that is an acidic gas-absorbing solution and detection means 72 obtaining the concentration of a degradant contained in a lean solution 16 from the measured electric conductivity of the lean solution 16 based on the relationship between the previously-obtained electric conductivity of the lean solution 16 and the concentration of the degradant contained in the lean solution 16.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: October 10, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Atsuhiro Yukumoto, Kouji Horizoe, Yudai Kato, Haruaki Hirayama, Kazuo Ishida
  • Patent number: 9708557
    Abstract: A method for treating liquefied hydrocarbons comprising acid gases to remove said gases while minimizing loss of amine species, the method comprising the step of contacting the liquefied hydrocarbons with an absorbent aqueous solution of a first amine compound, the first amine compound having the structure: wherein R1 and R2 may each individually be hydrogen, methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, 2-hydroxyethyl or propane-2,3-diol.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: July 18, 2017
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Christophe R. Laroche, James M. Hill
  • Patent number: 9707508
    Abstract: A polarity swing-assisted regeneration (PSAR) process is disclosed for improving the efficiency of releasing gases chemically bound to switchable ionic liquids. Regeneration of the SWIL involves addition of a quantity of non-polar organic compound as an anti-solvent to destabilize the SWIL, which aids in release of the chemically bound gas. The PSAR decreases gas loading of a SWIL at a given temperature and increases the rate of gas release compared to heating in the absence of anti-solvent.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: July 18, 2017
    Assignee: BATTELLE MEMORIAL INSTITUTE
    Inventors: David J. Heldebrant, Ward E. Tegrotenhuis, Charles J. Freeman, Michael L. Elliott, Phillip K. Koech, Paul H. Humble, Feng Zheng, Jian Zhang
  • Patent number: 9707512
    Abstract: Promoter amines are used to enhance CO2 uptake by sterically hindered or tertiary amines. The promoter amines can be cyclic amines, including aromatic cyclic amines or bridged cyclic amines. The combination of a promoter amine plus a sterically hindered or tertiary amines allows for improved uptake kinetics while reducing or minimizing the amount of formation of carbamate salts. The promoted sterically hindered or tertiary amines can be used as part of a CO2 capture and release system that involves a phase transition from a solution of amine-CO2 products to a slurry of amine-CO2 precipitate solids.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: July 18, 2017
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Pavel Kortunov, Michael Siskin
  • Patent number: 9643122
    Abstract: A device and method for separating off carbon dioxide is provided, including an absorption unit, desorption unit assigned thereto and a separation unit for separating off salts from a scrubbing solution. The absorption and desorption units are connected to each other via a first conduit for a regenerated scrubbing solution and a second conduit for a loaded scrubbing solution. The separation unit includes a crystallizer for forming salt crystals and a first separator unit on the downstream side for separating off salt crystals. A separation unit is provided for separating off salts from a scrubbing solution, having a crystallizer and a first separator unit downstream thereof. The crystallizer has a crystallization chamber for forming salt crystals and a countercurrent classifier for separating salt crystals according to particle size. A first branch conduit is connected to the crystallization chamber, which opens out into the countercurrent classifier via a second separator unit.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: May 9, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Rainald Forbert, Stefan Hauke, Ralph Joh, Markus Kinzl, Rudiger Schneider
  • Patent number: 9597629
    Abstract: A method for separating off carbon dioxide from a gas mixture, in particular from breathing air, with a life-sustaining device, wherein in a first method step the gas mixture is fed to an adsorption and/or absorption unit under at least one first pressure, and in a second method step a gas mixture is conveyed out of the adsorption and/or absorption unit under at least one second pressure that is higher than the first pressure.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: March 21, 2017
    Assignee: Airbus DS GmbH
    Inventors: Carsten Matthias, Walter Jehle, Peter Kern
  • Patent number: 9586174
    Abstract: An absorption column 1 for separating CO2 and a second acid gas from a gas stream, the column comprising a first and second section (4, 5) for the absorption of CO2 and the second acid gas; a solvent inlet in the second section for the addition of liquid stream 3 including an absorbent liquid for CO2 and the second acid gas; a gas inlet (21) in the first section for the addition of a gas stream (2) containing CO2 and the second acid gas; a gas outlet (15) in the second section of the column; a first solvent outlet (22) for the removal of at least a portion of the solvent (6) from the second section of the column and a second solvent outlet (23) for solvent stream (11) from the first section of the column; and a liquid flow distributor arrangement (8) to allow a portion of the solvent to flow from the second section of the column to the first section. A method of operating the apparatus and method of solvent extraction is also disclosed.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: March 7, 2017
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Erik Everhardus Bernardus Meuleman, Graeme Puxty, Paul Feron
  • Patent number: 9556753
    Abstract: In various aspects, a method for producing electricity by operating two or more turbines in series is provided. The method can include introducing, at least part of, the exhaust from an upstream turbine into a combustion chamber of a downstream turbine. In one aspect, exhaust from the upstream turbine is introduced into the downstream turbine's combustion chamber via the downstream turbine's compression chamber.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: January 31, 2017
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Timothy A. Barckholtz, Frank H. Hershkowitz, Paul J. Berlowitz
  • Patent number: 9528350
    Abstract: Technical system (2; 2?), method and uses for dosing of at least one liquid treatment means (12) into injection water (16) to an injection well (22), wherein the technical system (2; 2?) comprises: —an underwater line (14; 14?) for transport of the injection water (16) from a shipment site (20; 48) for the injection water (16); and —at least one liquid-tight storage unit (10) containing the at least one liquid treatment means (12). The distinctive characteristic is that the at least one storage unit (10) is structured as a volumetrically flexible unit; —wherein said storage unit (10) is placed under water (6); and —wherein said storage unit (10) is connected, in a flow-communicating manner, to the underwater line (14; 14?) for dosing of liquid treatment means (12) into the injection water (16) to the injection well (22).
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: December 27, 2016
    Assignee: SEABOX AS
    Inventors: Helge Lunde, David Pinchin
  • Patent number: 9511323
    Abstract: A method for drying natural gas or other industrial gases is disclosed in which such gas streams are dehydrated to very low water dew points using a dry liquid desiccant. The method comprises a continuous process with the liquid desiccant regenerated to by heating and the use of a stripping agent to provide two levels of regeneration which are used in sequential contacting of the gas stream. This disclosure reduces energy and capital costs relative to existing methods.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: December 6, 2016
    Assignee: AZOTA GAS PROCESSING, LTD.
    Inventor: Pierre E. Lugosch
  • Patent number: 9421493
    Abstract: The method of removing acid compounds contained in a gaseous effluent consists in contacting in column C1 a gaseous effluent with an absorbent solution 4 made up of an aqueous solution of one or more diamines belonging to the bis(amino-3-propyl)ether or (amino-2-ethyl)-(amino-3-propyl)ether family.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: August 23, 2016
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Bruno Delfort, Dominique Le Pennec, Fabien Porcheron, Thierry Huard, Julien Grandjean
  • Patent number: 9409119
    Abstract: An acid gas absorbent of which recovery amount of acid gas such as carbon dioxide is high, and an acid gas removal device and an acid gas removal method using the acid gas absorbent are provided. The acid gas absorbent of the embodiment comprising at least one type of tertiary amine compound represented by the following general formula (1). (In the above-stated formula (1), either one of the R1, R2 represents a substituted or non-substituted alkyl group of which carbon number is 2 to 5, and the other one represents a substituted or non-substituted alkyl group of which carbon number is 1 to 5. The R3 represents a methyl group or an ethyl group, and the R4 represents a hydroxyalkyl group. The R1, R2 may either be the same or different, and they may be coupled to form a cyclic structure.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: August 9, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinji Murai, Yukishige Maezawa, Yasuhiro Kato, Takehiko Muramatsu, Satoshi Saito, Hiroko Watando, Naomi Shida, Reiko Yoshimura, Takashi Kuboki
  • Patent number: 9399939
    Abstract: A combustion exhaust gas treatment system comprising: a heat exchanger (A) for recovering heat contained in the combustion exhaust gas into heat medium, an absorption column for obtaining CO2 removed gas by absorbing CO2 in the combustion exhaust gas into absorbent, a heat exchanger (B) for applying heat recovered by heat medium to the CO2 absorbed absorbent, a desorption column for desorbing the absorbent by removing CO2 from the CO2 absorbed absorbent, a flash tank for flash vaporizing the desorbed absorbent and a heat exchanger (E) for transferring heat from the desorbed absorbent to the CO2 absorbed absorbent, wherein the CO2 absorbed absorbent can be supplied from the absorption column to the desorption column via the heat exchanger (E) and the heat exchanger (B) in this order, and the desorbed absorbent can be supplied from the desorption column to the absorption column via the flash tank and the heat exchanger (E) in this order.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: July 26, 2016
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Jun Shimamura, Toshio Katsube, Kouichi Yokoyama, Yoshihiro Kidera, Nobuyoshi Mishima, Hisayuki Orita
  • Patent number: 9272242
    Abstract: A high cyclic capacity carbon dioxide scrubbing process contacts a gas stream containing carbon dioxide in a sorption zone with a liquid scrubbing solution of a low molecular weight sterically hindered amine, particularly a secondary alkanolamine or aminoether at a high concentration, typically at least 3.5M and at a temperature of at least 30° C. to sorb the carbon dioxide into the solution and form a rich stream of the sorbed carbon dioxide in the solution in the form of dissolved amine carbamate and/or alkanolamine bicarbonate. The rich stream is then passed from the sorption zone to at least one regeneration zone and the sorbed carbon dioxide is desorbed as gas from the solution to form a lean solution containing a reduced concentration of sorbed carbon dioxide relative to the rich stream; the lean stream is then returned to the sorption zone for a further sorption cycle.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: March 1, 2016
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Pavel Kortunov, Michael Siskin, Hans Thomann
  • Patent number: 9180404
    Abstract: A method for capturing CO2 from a CO2 containing gas (1), such as en exhaust gas from a thermal power plant fired on carbonaceous fuel, or any other CO2 containing industrial gas, where CO2 is captured from the gas by causing the gas to flow counter current to a CO2 absorbing solvent introduced into a CO2 absorption section (3) in an absorber (2) so that CO2 present in the gas is absorbed by the CO2 absorbing solvent to form a CO2 rich solvent (5), where CO2 rich solvent is collected on the bottom of the of the absorption column and withdrawn for regeneration, and where the treated exhaust gas (8) is released to the atmosphere after being subjected to one or more washing step(s) (6,7), wherein the temperature of the CO2 absorbing solvent (4) introduced into the CO2 absorption section has a temperature that is less than 5° C. lower than the maximum temperature in the absorption section of the absorber, is described.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: November 10, 2015
    Assignee: Aker Engineering & Technology AS
    Inventors: Otto Morten Bade, Simon Woodhouse, Oddvar Gorset, Vibeke Andersson
  • Patent number: 9169717
    Abstract: Compositions for chemically removing sulfur deposits from reservoir formations, production tubing, flow lines, and other production equipment due to the production of sour gas and/or oil including reaction products of diamines and aldehydes at a mole ratio between about 1:1 and about 1:6, and methods for making and using same.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: October 27, 2015
    Assignee: LUBRIZOL OILFIELD SOLUTIONS INC.
    Inventors: Simon Levey, Clayton Smith, Pulikesi Murugan
  • Patent number: 9155990
    Abstract: A method for eliminating or substantially reducing emission of amines (amineslip) and alkaline degradation products to the atmosphere from a plant for CO2 capture from a flue gas, where the CO2 is captured by counter-current flow to an absorbent in an absorption zone, the absorbent comprising an aqueous solution of one or more amine(s), to give a CO2 lean flue gas that is released into the surroundings, and a CO2 rich absorbent that is regenerated in a regeneration column to give a CO2 rich gas that is treated further, and regenerated absorbent that is recycled to the absorption zone, wherein the CO2 lean flue gas is washed with an acidic aqueous solution to remove or substantially reduce the amount of amine(s) and alkaline degradation products thereof in the gas, is described.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: October 13, 2015
    Assignee: Aker Clean Carbon AS
    Inventors: Oscar Fredrik Graff, Otto Morten Bade, Oddvar Gorset, Simon Woodhouse