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公开(公告)号：US20240216894A1
公开(公告)日：2024-07-04
申请号：US18104926
申请日：2023-02-02
发明人： Sung Chan NAM , Il Hyun BAEK , Jong Tak JANG
IPC分类号： B01J23/755 , B01D53/14 , B01J21/18 , B01J23/28 , B01J23/745 , B01J35/00 , B01J35/10 , B01J37/02 , B01J37/08
CPC分类号： B01J23/755 , B01D53/1425 , B01D53/1475 , B01D53/1493 , B01J21/18 , B01J23/28 , B01J23/745 , B01J35/0066 , B01J35/1019 , B01J35/1023 , B01J35/1042 , B01J37/0213 , B01J37/0215 , B01J37/0236 , B01J37/088 , B01D2252/20405 , B01D2252/20421 , B01D2252/20484 , B01D2252/602
摘要： The present invention provides a composite catalyst for diminishing energy demand during carbon dioxide absorbent regeneration and a method for producing the same.
The present invention more particularly relates to a composite catalyst in which the surface or inside of activated carbon activated carbon used as a porous carrier is modified with oxides of one or more metals selected from a transition metal group consisting of Fe, Ni, and Mo, and a method for producing the composite catalyst.
The activated carbon composite catalyst modified with a metal of the present invention is able to regenerate MEA (monoethanolamine) at a low temperature of 100° C. or below to diminish heat consumption, can decrease the heat duty by increasing the carbon dioxide desorption rate at a low temperature of 100° C. or below as well as acquire improved results through the relation between the BET surface area and the total acid sites, and can be usefully used as a technology capable of diminishing energy demand during energy-efficient CO2 absorbent regeneration at an economical cost since materials for production are inexpensive and abundant.-
公开(公告)号：US20240207777A1
公开(公告)日：2024-06-27
申请号：US18146884
申请日：2022-12-27
CPC分类号： B01D53/1425 , B01D19/0005 , B01D53/1456 , B01D53/1493 , B01D2252/20421 , B01D2252/20484 , B01D2257/304 , B01D2257/504
摘要： Absorption of one or more acid gases from a gas stream may take place using diglycolamine as an absorbent. Methods for processing the absorbent after acid gas absorption may comprise: obtaining an at least partially spent aqueous amine solution from an absorber tower; removing at least a portion of the one or more acid gases from the at least partially spent aqueous amine solution in a regeneration tower to form an at least partially regenerated aqueous amine solution comprising diglycolamine and bis-(2-hydroxyethoxyethyl)urea; and introducing at least a first portion of the at least partially regenerated aqueous amine solution to a reclaimer under thermal conditions effective to revert at least a majority of the bis-(2-hydroxyethoxyethyl) urea to diglycolamine. The reclaimer is heated with a steam input that is in indirect contact with the at least partially regenerated aqueous amine solution and cooled with at least a diglycolamine stream.
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公开(公告)号：US11938443B2
公开(公告)日：2024-03-26
申请号：US17174853
申请日：2021-02-12
发明人： Kunlei Liu
CPC分类号： B01D53/229 , B01D53/1418 , B01D53/1425 , B01D53/1475 , B01D53/18 , B01D53/62 , B01D53/78 , C01B32/50 , B01D2053/221 , B01D2252/20447 , B01D2252/20484 , B01D2252/20489 , B01D2257/504 , B01D2258/0283 , C01B2210/0012 , C01B2210/0025
摘要： A hybrid post-combustion carbon dioxide capture system for capturing carbon dioxide from a flue gas includes a compressor adapted to produce a compressed flue gas stream, a membrane-based carbon dioxide separation unit configured to receive a first portion of the compressed flue gas stream from the compressor, and an aqueous-based carbon dioxide capture unit configured to receive a second portion of the compressed flue gas stream from the compressor whereby the compressed flue gas stream is processed in parallel by the membrane-based carbon dioxide separation unit and the aqueous-based carbon dioxide capture unit.
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4.发明公开公开(公告)号：US20240042376A1
公开(公告)日：2024-02-08
申请号：US18268488
申请日：2022-08-18
申请人： CE-TEK CO., LTD.
发明人： Yun-Je LEE , Hai Lian JIN , Seong Yeon KIM , Ye Sol WOO , Kwang Soon LEE , Hoon Sik KIM
CPC分类号： B01D53/1493 , B01D53/1475 , B01D53/1425 , B01D53/62 , B01D53/78 , B01D53/96 , B01D2257/504 , B01D2252/20447 , B01D2252/2026 , B01D2252/20489 , B01D2252/20484 , B01D2252/20431 , B01D2252/20421 , B01D2252/504
摘要： A water-lean carbon dioxide absorbent according to the present invention comprises a cyclodiamine and a polyalkylene glycol alkyl ether and further comprises an alkanolamine, wherein the absorbent shows an excellent reaction rate with carbon dioxide, is resistant to degradation due to oxygen and heat, and can greatly reduce energy consumption due to latent heat of water when regenerated, and thus leads to a water-lean carbon dioxide absorbent with improved regeneration efficiency.
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公开(公告)号：US20240009623A1
公开(公告)日：2024-01-11
申请号：US18369445
申请日：2023-09-18
CPC分类号： B01D53/965 , B01D53/62 , B01D53/78 , B01D2252/30 , B01D2252/20415 , B01D2252/20484 , B01D2257/504 , B01D2252/602
摘要： A method of capturing a target species from a gas comprises the steps of:
contacting a gas containing a target species with a first absorbent solution comprising a capture species; dissolving the target species in the first absorbent solution to form a target anion; electrochemically separating the target anion from the first absorbent solution by contacting the first absorbent solution with one or more ion-exchange membranes, and transferring the target anion through an ion-exchange membrane into a second absorbent solution; and releasing at least some of the target species from the second absorbent solution. The one or more ion-exchange membranes are not permeable to the capture species, so the capture species does not pass through the one or more ion-exchange membranes. An apparatus for capturing a target species from a gas is also provided.-
公开(公告)号：US11786860B2
公开(公告)日：2023-10-17
申请号：US17468388
申请日：2021-09-07
发明人： Prakash Chandra Sahoo , Manoj Kumar , Ravi Prakash Gupta , Suresh Kumar Puri , Sankara Sri Venkata Ramakumar
IPC分类号： B01D53/14
CPC分类号： B01D53/1493 , B01D53/1425 , B01D53/1475 , B01D2252/10 , B01D2252/2026 , B01D2252/20415 , B01D2252/20436 , B01D2252/20484 , B01D2252/604
摘要： The present invention relates to a biocompatible task specific hybrid solvent (TSHS) composition that synergistically increases the carbon capture efficiency and utilizes less energy for CO2 desorption over the existing solutions. Further, the process of synthesizing such composition is discussed in this disclosure. Also, the present disclosure provides a process that involves a task specific hybrid solvent (TSHS) composition for selective capturing CO2 from any gaseous stream.
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7.发明公开公开(公告)号：US20230226483A1
公开(公告)日：2023-07-20
申请号：US18002519
申请日：2021-07-06
发明人： Carla S. Pereira , Jenny P. Seagraves , P. Scott Northrop , Michael Siskin , Thomas Ingram , Gerald Vorberg , Martin Ernst , Georg K. Sieder
CPC分类号： B01D53/1425 , B01D53/1468 , B01D53/1493 , B01D53/1475 , B01D53/52 , B01D53/62 , B01D53/78 , B01D53/96 , B01D2257/304 , B01D2257/504 , B01D2252/2041 , B01D2252/20405 , B01D2252/20426 , B01D2252/20452 , B01D2252/20468 , B01D2252/20484 , B01D2252/60
摘要： Capture of hydrogen sulfide from a gas mixture may be accomplished using an aqueous solution comprising an amine. Certain sterically hindered amines may selectively form a reaction product with hydrogen sulfide under kinetically controlled contacting conditions and afford a light phase and a heavy phase above a critical solution temperature, wherein the hydrogen sulfide may be present in either phase. Upon separation of the light phase from the heavy phase, processing of one of the phases may take place to remove hydrogen sulfide therefrom. Recycling of the amine to an absorber tower may then take place to promote capture of additional hydrogen sulfide.
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公开(公告)号：US11666853B2
公开(公告)日：2023-06-06
申请号：US17175705
申请日：2021-02-15
发明人： In Wook Nah , Jae Ik Kim , Soon Jong Kwak , In Hwan Oh , Daeseung Kyung , Youngjong Sim , Yeongmin Kim , Han-Guen Ahn , Sang-Ick Choi
IPC分类号： B01D53/14
CPC分类号： B01D53/1493 , B01D53/1475 , B01D2252/2041 , B01D2252/20415 , B01D2252/20421 , B01D2252/20484 , B01D2257/504 , B01D2258/01 , B01D2258/05
摘要： Disclosed are a carbon dioxide absorbent composition in which an N-alkylaminoalkanol; a polyhydroxyamine-based compound; and ethylenediamine and/or diethylenetriamine are mixed, a method for preparing the same, and a method and an apparatus for carbon dioxide absorption/separation using the same. Since the carbon dioxide absorbent according to the present disclosure has superior carbon dioxide absorption capacity and remarkably lower absorbent recycling temperature as compared to the existing absorbents such as monoethanolamine, etc., total energy consumption in the capturing process can be reduced greatly. In addition, since carbon dioxide is recovered at low recycling temperature, contamination by water or absorbent vapor may be prevented.
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公开(公告)号：US20190240613A1
公开(公告)日：2019-08-08
申请号：US15889522
申请日：2018-02-06
CPC分类号： B01D53/1425 , B01D53/1412 , B01D53/1462 , B01D53/1475 , B01D53/1493 , B01D53/18 , B01D2252/2023 , B01D2252/204 , B01D2252/20405 , B01D2252/20431 , B01D2252/20484 , B01D2252/20489 , B01D2252/504 , B01D2252/60 , B01D2259/657 , C10L3/102 , C10L2290/12 , C10L2290/541
摘要： Embodiments of methods and associate system for removing acid gas from a sour gas stream are provided. The method includes (1) passing the sour gas stream in a counter-flow arrangement with an encapsulated phase change material and a lean amine based sorbent liquid configured to absorb the acid gas from the sour gas stream in an absorber; (2) separating the rich amine based sorbent liquid and the encapsulated phase change material; (3) passing the rich amine based sorbent liquid to an amine regenerator wherein the rich amine based sorbent liquid is heated to release the absorbed sour gas and regenerate the lean amine based sorbent liquid; and (4) passing the encapsulated phase change material and the regenerated lean amine based sorbent liquid through a cooler to reduce the temperature of the encapsulated phase change material such that the phase change material in the encapsulated phase change material solidifies.
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公开(公告)号：US20180326352A1
公开(公告)日：2018-11-15
申请号：US15776928
申请日：2016-11-14
发明人： Thomas Davidian , Steven Corthals , Cornelis Biesheuvel , Matthijs Ruitenbeek , Andrzej Malek , Peter E. Groenendijk , Garmt R. Meima
CPC分类号： B01D53/75 , B01D53/1425 , B01D53/1475 , B01D53/343 , B01D53/62 , B01D53/8653 , B01D2252/20447 , B01D2252/20484 , B01D2252/20489 , B01D2252/30 , B01D2256/20 , B01D2256/22 , B01D2257/502 , B01D2257/504 , B01D2258/0283 , B01D2259/65 , C01B2203/062 , C10G2/30 , C10G2/332 , Y02C10/04 , Y02C10/06
摘要： A method and an integrated system for reducing CO2 emissions in industrial processes. The method and integrated system (100) capture carbon dioxide (CO2) gas from a first gas stream (104) with a chemical absorbent to produce a second gas stream (106) having a higher concentration of carbon monoxide (CO) gas and a lower concentration of CO2 gas as compared to first gas stream. The CO gas in the second gas stream is used to produce C5 to C20 hydrocarbons in an exothermic reaction (108) with hydrogen (H2) gas (138). At least a portion of the heat generated in the exothermic reaction is used to regenerate the chemical absorbent with the liberation of the CO2 gas (128) captured from the first gas stream. Heat captured during the exothermic reaction can, optionally, first be used to generate electricity, wherein the heat remaining after generating electricity is used to thermally regenerate the chemical absorbent.
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