Method for recovery of CO2 from gas streams

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C423S228000, C423S242700

Reexamination Certificate

active

07056482

ABSTRACT:
A process for recovering CO2from a feed gas stream comprises treating the feed gas stream with a regenerated absorbent comprising at least one tertiary amine absorbent having a pKafor the amino function of from about 6.5 to about 9 in the presence of an oxidation inhibitor to obtain a CO2rich stream and subsequently treating the CO2rich stream to obtain the regenerated absorbent and a CO2rich product stream. The feed gas stream may also include SO2and/or NOx.

REFERENCES:
patent: 4211761 (1980-07-01), Tung
patent: 4336233 (1982-06-01), Appl et al.
patent: 4624838 (1986-11-01), Pan et al.
patent: 5017350 (1991-05-01), Hakka et al.
patent: 5019361 (1991-05-01), Hakka
patent: 5061465 (1991-10-01), Carter
patent: 5744110 (1998-04-01), Mimura et al.
patent: 6036931 (2000-03-01), Yoshida et al.
patent: 6165433 (2000-12-01), Chakravarti et al.
patent: 6337059 (2002-01-01), Schubert et al.
patent: 6582498 (2003-06-01), Barnes, Jr. et al.
patent: 1 016 445 (2000-07-01), None
patent: WO 02/09849 (2002-02-01), None
patent: WO 03/013701 (2003-02-01), None
D. L. Heguy and G. J. Nagl, Consider optimized iron-redox processes to remove sulfur, Gas Processing Developments Special Report, Hydrocarbon Processing, Jan. 2003, p. 53-57, Schaumburg, Illinois.
P. C. Rooney, M. S. DuPart and T. R. Bacon, Oxygen's role in alkanolamine degradation, Process Technology, Hyrdocarbon Processing, Jul. 1998, p. 109-113, Freeport, Texas.
Gary T. Rochelle, George S. Goff, Tim Cullinane, and Stefano Freguia, Research Results for CO2Capture from Flue Gas by Aqueous Absorption/Stripping, presented at the Laurance Reid Gas Conditioning Conference, Department of Chemical Engineering, The University of Texas at Austin, Feb. 25-27, 2002, p. 131-151, Austin, TexasM.
M. Simmonds, P. Hurst, M.B. Wilkinson, C. Watt and C.A. Roberts, a Study of Very Large Scale Post Combustion CO2Capture at a Refining & Petrochemical Complex, p. 1-8, United Kingdom, no date.
George S. Goff and Gary T. Rochelle, Department of Chemical Engineering, The University at Austin, Austin, Texas, no date.
A. Chakma and A. Meisen, Department of Chemical Engineering, The University of British Columbia, Proc. 35th Canadian Chemical Engineering Conference, Calgary, Alberta, Canada, 1985, vol. 1: p. 37-41, no month.
Amitabha Chakma and Axel Meisen, Department of Chemical Engineering, The University of British Columbia, Solubility of CO2In Aqueous Methyldiethanolamine and N, N-Bis (hydroxyethyl) piperazine Solutions, Vancouver, British Columbia, Canada, Reprinted from I & EC Research, 1987, 26, 2461. Copyright 1987 by the American Chemical Society and reprinted by permission of the copyright owner, first page, no month.
M. Slater, E. West and C. L. Mariz, Carbon Dioxide Capture from Multiple Flue Gas Sources, United Kingdom and U.S.A., no date.
IEA Greenhouse Gas R & D Programme, CRE, Stoke Orchard, Carbon Dioxide Capture from Power Stations, Absourbtion Technologies, p. 8, Glaucestershire, United Kingdom, no date.
M. Wilson, P. Tontiwachwuthikul, A. Chakma, R. Idem, A. Veawab, A. Aroonwilas, D. Gelowitz, J. Barrie, C. Mariz, Test Results from a CO2Extraction Pilot Plant at Boundary Dam Coal-Fired Power Station, Canada and U.S.A., no date.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for recovery of CO2 from gas streams does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for recovery of CO2 from gas streams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for recovery of CO2 from gas streams will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3660710

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.