EP 1899049 A4 20101208 - SEPARATION OF CARBON DIOXIDE (CO2) FROM GAS MIXTURES BY CALCIUM BASED REACTION SEPARATION ( CaRS-CO2) PROCESS
Title (en)
SEPARATION OF CARBON DIOXIDE (CO2) FROM GAS MIXTURES BY CALCIUM BASED REACTION SEPARATION ( CaRS-CO2) PROCESS
Title (de)
ABTRENNUNG VON KOHLENDIOXID (CO2) AUS GASGEMISCHEN DURCH CALCIUMBASIERTES REAKTIONSABTRENNUNGSVERFAHREN (CARS-CO2)
Title (fr)
SEPARATION DE DIOXYDE DE CARBONE (CO2) DE MELANGE DE GAZ PAR PROCESSUS DE SEPARATION PAR REACTION A BASE DE CALCIUM ( CARS-CO2)
Publication
Application
Priority
- US 2006025266 W 20060628
- US 69459405 P 20050628
- US 25509905 A 20051020
Abstract (en)
[origin: WO2007002792A2] A reaction-based process has been developed for the selective removal of carbon dioxide (CO<SUB>2</SUB>) from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet CO<SUB>2</SUB> concentration in the stream. The proposed process effects the separation of CO<SUB>2</SUB> from a mixture of gases (such as flue gas/fuel gas) by its reaction with metal oxides (such as calcium oxide). The Calcium based Reaction Separation for CO<SUB>2</SUB> (CaRS-CO<SUB>2</SUB>) process consists of contacting a CO<SUB>2</SUB> laden gas with calcium oxide (CaO) in a reactor such that CaO captures the CO<SUB>2</SUB> by the formation of calcium carbonate (CaCOa). Once "spent", CaCO<SUB>3</SUB> is regenerated by its calcination leading to the formation of fresh CaO sorbent and the evolution of a concentrated stream of CO<SUB>2</SUB>. The "regenerated" CaO is then recycled for the further capture of more CO<SUB>2</SUB>. This carbonation-calcination cycle forms the basis of the CaRS-CO<SUB>2</SUB> process. This process also identifies the application of a mesoporous CaCO<SUB>3</SUB> structure, developed by a process detailed elsewhere, that attains >90% conversion over multiple carbonation and calcination cycles. Lastly, thermal regeneration (calcination) under vacuum provided a better sorbent structure that maintained reproducible reactivity levels over multiple cycles.
IPC 8 full level
B01D 53/62 (2006.01); B01D 53/04 (2006.01); B01J 20/04 (2006.01); C01B 3/16 (2006.01)
CPC (source: EP)
B01D 53/62 (2013.01); B01J 20/0277 (2013.01); B01J 20/041 (2013.01); B01J 20/06 (2013.01); B01J 20/3433 (2013.01); B01J 20/3466 (2013.01); B01J 20/3491 (2013.01); C01B 32/50 (2017.07); C01F 11/18 (2013.01); B01D 2251/602 (2013.01); B01D 2257/504 (2013.01); Y02C 20/40 (2020.08); Y02P 20/151 (2015.11)
Citation (search report)
- [X] WO 2005046862 A1 20050526 - CA MINISTER NATURAL RESOURCES [CA], et al
- [Y] US 2004261617 A1 20041230 - STEWART ALBERT E [US]
- [Y] EP 1495794 A1 20050112 - CONSEJO SUPERIOR INVESTIGACION [ES], et al
- [XY] M.V. IYER, H. GUPTA, B.B. SAKADJIAN, L.S. FAN: "Multicyclic Study on the Simultaneous Carbonation and Sulfation of High-Reactivity CaO", IND. ENG. CHEM. RES., vol. 43, no. 14, 26 May 2004 (2004-05-26), USA, pages 3939 - 3947, XP002606743, DOI: 10.1021/ie0341911
- [X] GUPTA H ET AL: "Carbonation-Calcination Cycle Using High Reactivity Calcium Oxide for Carbon Dioxide Separation from Flue Gas", INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol. 41, no. 16, 7 November 2002 (2002-11-07), pages 4035 - 4042, XP007903726, ISSN: 0888-5885
- [X] WANG J ET AL: "Clean and efficient use of petroleum coke for combustion and power generation", FUEL, IPC SCIENCE AND TECHNOLOGY PRESS, GUILDFORD, GB LNKD- DOI:10.1016/J.FUEL.2004.01.002, vol. 83, no. 10, 1 July 2004 (2004-07-01), pages 1341 - 1348, XP004502060, ISSN: 0016-2361
- See references of WO 2007002792A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007002792 A2 20070104; WO 2007002792 A3 20070329; CA 2613698 A1 20070104; CA 2613698 C 20130205; EP 1899049 A2 20080319; EP 1899049 A4 20101208
DOCDB simple family (application)
US 2006025266 W 20060628; CA 2613698 A 20060628; EP 06774232 A 20060628