Practical method of CO.sub.2 sequestration

Patent · Tue Mar 01 04:00:00 EST 2011

OSTI ID:1018064

Goswami, D Yogi ^[1]; Lee, Man Su ^[2]; Kothurkar, Nikhil K ^[3]; Stefanakos, Elias K ^[3]

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1. Gainesville, FL
2. Houston, TX
3. Tampa, FL

A process and device to capture of CO.sub.2 at its originating source, such as a power plant, is disclosed. Absorbent material is recharged by desorbing CO.sub.2, so that it may be sequestered or used in another application. Continual recharging results in loss of absorbent surface area, due to pore plugging and sintering of particles. Calcium oxide or calcium hydroxide was immobilized to a fibrous ceramic-based fabric substrate as a thin film and sintered, creating an absorbent material. The samples were characterized, showing continuous cyclic carbonation conversions between about 62% and 75% under mild calcination conditions at 750.degree. C. and no CO.sub.2 in N.sub.2. Under the more severe calcination condition at 850.degree. C. and 20 wt % CO.sub.2 in N.sub.2, yttria fabric was superior to alumina as a substrate for carbon dioxide capture and the reactivity of the calcium oxide absorbent immobilized to yttria was maintained at the same level in the 12 cycles.

• Research Organization: University of South Florida (Tampa, FL)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC36-04GO14224
• Assignee: University of South Florida (Tampa, FL)
• Patent Number(s): 7,896,953
• Application Number: 12/335,049
• OSTI ID: 1018064
• Country of Publication: United States
• Language: English

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