Hybrid parallel / serial process for carbon dioxide capture from combustion exhaust gas using a sweep-based membrane separation step
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/22
B01D-053/62
F02C-003/34
F23C-009/00
출원번호
US-0665620
(2012-10-31)
등록번호
US-9005335
(2015-04-14)
발명자
/ 주소
Baker, Richard W.
Wei, Xiaotong
Merkel, Timothy C
출원인 / 주소
Membrane Technology and Research, Inc.
대리인 / 주소
Bean, Kathi
인용정보
피인용 횟수 :
0인용 특허 :
28
초록▼
A gas separation process for treating an exhaust gas stream from a combustion processes. The invention involves routing a first portion of the exhaust stream to a carbon dioxide capture step, and flowing a second portion of the exhaust stream and at least a portion of an off-gas stream from the carb
A gas separation process for treating an exhaust gas stream from a combustion processes. The invention involves routing a first portion of the exhaust stream to a carbon dioxide capture step, and flowing a second portion of the exhaust stream and at least a portion of an off-gas stream from the carbon dioxide capture step across the feed side of a membrane, while flowing a sweep gas stream, usually air, across the permeate side, and then passing the resulting permeate sweep stream back to the combustor.
대표청구항▼
1. A process for controlling carbon dioxide exhaust from a combustion process, comprising: (a) performing a combustion process by combusting a mixture of a fuel and air, oxygen-enriched air, or oxygen, thereby creating an exhaust stream comprising carbon dioxide and nitrogen;(b) performing a carbon
1. A process for controlling carbon dioxide exhaust from a combustion process, comprising: (a) performing a combustion process by combusting a mixture of a fuel and air, oxygen-enriched air, or oxygen, thereby creating an exhaust stream comprising carbon dioxide and nitrogen;(b) performing a carbon dioxide capture step to remove a portion of carbon dioxide in concentrated form from a first portion of the exhaust stream, thereby creating an off-gas stream from the capture step that is less concentrated in carbon dioxide than the exhaust stream;(c) providing a membrane having a feed side and a permeate side, and being selectively permeable to carbon dioxide over nitrogen and to carbon dioxide over oxygen;(d) passing a second portion of the exhaust stream and at least a portion of the capture step off-gas stream across the feed side;(e) passing air, oxygen-enriched air, or oxygen as a sweep stream across the permeate side;(f) withdrawing from the feed side a carbon-dioxide depleted vent stream;(g) withdrawing from the permeate side a permeate stream comprising oxygen and carbon dioxide;(h) passing the permeate stream to step (a) as at least part of the air, oxygen-enriched air, or oxygen used in step (a). 2. The process of claim 1, wherein the at least a portion of the capture step off-gas stream that is passed to step (d) comprises between about 3 vol % to about 20 vol % carbon dioxide. 3. The process of claim 1, wherein the exhaust stream emanates from a gas turbine. 4. The process of claim 1, wherein the exhaust stream emanates from a steam turbine. 5. The process of claim 1, wherein the exhaust stream comprises between about 10 vol % to about 25 vol % carbon dioxide. 6. The process of claim 1, wherein the first portion of the exhaust stream that is sent to step (b) comprises between about 10 vol % and about '75 vol % of the total exhaust stream. 7. cess of claim 6, wherein the first portion of the exhaust stream that is sent to step (b) comprises between about 20 vol % and about 65 vol % of the total exhaust stream. 8. The process of claim 7, wherein the first portion of the exhaust stream that is sent to step (b) comprises between about 40 vol % and about 60 vol % of the exhaust stream. 9. The process of claim 1, wherein the carbon dioxide capture step comprises at least one process selected from the group consisting of absorption, adsorption, liquefaction, and membrane separation. 10. The process of claim 9, wherein the carbon dioxide capture step is an absorbent-based capture step. 11. The process of claim 10, wherein the absorbent-based capture step comprises a chemical absorption process. 12. The process of claim 11, wherein the chemical absorption process is an amine-based absorption process. 13. The process of claim 11, wherein the chemical absorption process is a potassium carbonate scrubbing process. 14. The process of claim 10, wherein the absorption-based carbon dioxide capture step comprises a physical absorption process. 15. The process of claim 1, wherein the sweep stream follows a sweep flow direction across the permeate side, the off-gas stream follows a feed flow direction across the feed side, and the sweep flow direction is substantially countercurrent to the feed flow direction. 16. The process of claim 1, wherein the membrane exhibits a carbon dioxide permeance of at least 500 gpu under process operating conditions. 17. The process of claim 1, wherein the membrane exhibits a selectivity in favor of carbon dioxide over nitrogen of at least 10 under process operating conditions. 18. The process of claim 1, wherein the vent stream comprises 3 vol % carbon dioxide or less.
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이 특허에 인용된 특허 (28)
Baker, Richard W.; Da Costa, Andre R.; Lokhandwala, Kaaeid A., Carbon dioxide removal process.
Reddy Damoder (San Ramon CA) Moon Tag Y. (Worthington OH) Reineke ; deceased Charles E. (lat of Midland MI by Marian F. Reinecke ; legal representative), Counter current dual-flow spiral wound dual-pipe membrane separation.
Holmes Arthur S. (Shrewsbury MA) Ryan James M. (Weston MA), Distillative separations of gas mixtures containing methane, carbon dioxide and other components.
Baker, Richard W; Wijmans, Johannes G; Merkel, Timothy C; Lin, Haiqing; Daniels, Ramin; Thompson, Scott, Gas separation process using membranes with permeate sweep to remove CO.
Friesen Dwayne T. (Bend OR) Newbold David D. (Bend OR) McCray Scott B. (Bend OR) Ray Roderick J. (Bend OR), Membrane dehydration of vaporous feeds by countercurrent condensable sweep.
Valencia Jaime A. (Houston TX) Victory Donald J. (New Orleans LA), Method and apparatus for cryogenic separation of carbon dioxide and other acid gases from methane.
Hasse, David J.; Kulkarni, Sudhir S.; Sanders, Jr., Edgar S.; Tranier, Jean-Pierre; Terrien, Paul, Method of obtaining carbon dioxide from carbon dioxide-containing gas mixture.
Wijmans, Johannes G.; Merkel, Timothy C.; Baker, Richard W., Process for separating carbon dioxide from flue gas using parallel carbon dioxide capture and sweep-based membrane separation steps.
Wijmans, Johannes G.; Baker, Richard W.; Merkel, Timothy C., Process for separating carbon dioxide from flue gas using sweep-based membrane separation and absorption steps.
Sauer Richard A. (5601 Quincy St. Hinsdale IL 60521) Paganessi Joseph E. (31-35 Avenue Thierry Ville d\Avray FRX), Recovery of carbon dioxide from a carbon dioxide plant vent gas using membranes.
Prasad, Ravi; Schwartz, Joseph Michael; Robinson, Earl T.; Gottzmann, Christian Friedrich, Syngas production method utilizing an oxygen transport membrane.
Chinn, Daniel; Chen, Jen Kai; Ong, James; Cheng, Minquan; Okeowo, Oluwasijibomi O., Use of gas-separation membranes to enhance production in fields containing high concentrations of hydrogen sulfides.
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