Method and system for capturing carbon dioxide and/or sulfur dioxide from gas stream
Abstract
The present invention provides a system for capturing CO.sub.2 and/or SO.sub.2, comprising: (a) a CO.sub.2 and/or SO.sub.2 absorber comprising an amine and/or amino acid salt capable of absorbing the CO.sub.2 and/or SO.sub.2 to produce a CO.sub.2- and/or SO.sub.2-containing solution; (b) an amine regenerator to regenerate the amine and/or amino acid salt; and, when the system captures CO.sub.2, (c) an alkali metal carbonate regenerator comprising an ammonium catalyst capable catalyzing the aqueous alkali metal bicarbonate into the alkali metal carbonate and CO.sub.2 gas. The present invention also provides for a system for capturing SO.sub.2, comprising: (a) a SO.sub.2 absorber comprising aqueous alkali metal carbonate, wherein the alkali metal carbonate is capable of absorbing the SO.sub.2 to produce an alkali metal sulfite/sulfate precipitate and CO.sub.2.
- Inventors:
- Issue Date:
- Research Org.:
- The Regents of the University of California, Oakland, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1143636
- Patent Number(s):
- 8,771,403
- Application Number:
- 13/757,550
- Assignee:
- The Regents of the University of California (Oakland, CA) CHO
- DOE Contract Number:
- AC02-05CH11231
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2013 Feb 01
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Chang, Shih-Ger, Li, Yang, and Zhao, Xinglei. Method and system for capturing carbon dioxide and/or sulfur dioxide from gas stream. United States: N. p., 2014.
Web.
Chang, Shih-Ger, Li, Yang, & Zhao, Xinglei. Method and system for capturing carbon dioxide and/or sulfur dioxide from gas stream. United States.
Chang, Shih-Ger, Li, Yang, and Zhao, Xinglei. Tue .
"Method and system for capturing carbon dioxide and/or sulfur dioxide from gas stream". United States. https://www.osti.gov/servlets/purl/1143636.
@article{osti_1143636,
title = {Method and system for capturing carbon dioxide and/or sulfur dioxide from gas stream},
author = {Chang, Shih-Ger and Li, Yang and Zhao, Xinglei},
abstractNote = {The present invention provides a system for capturing CO.sub.2 and/or SO.sub.2, comprising: (a) a CO.sub.2 and/or SO.sub.2 absorber comprising an amine and/or amino acid salt capable of absorbing the CO.sub.2 and/or SO.sub.2 to produce a CO.sub.2- and/or SO.sub.2-containing solution; (b) an amine regenerator to regenerate the amine and/or amino acid salt; and, when the system captures CO.sub.2, (c) an alkali metal carbonate regenerator comprising an ammonium catalyst capable catalyzing the aqueous alkali metal bicarbonate into the alkali metal carbonate and CO.sub.2 gas. The present invention also provides for a system for capturing SO.sub.2, comprising: (a) a SO.sub.2 absorber comprising aqueous alkali metal carbonate, wherein the alkali metal carbonate is capable of absorbing the SO.sub.2 to produce an alkali metal sulfite/sulfate precipitate and CO.sub.2.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {7}
}
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