CARBON DIOXIDE CAPTURE FROM FLUE GAS USING DRY REGENERABLE SORBENTS [electronic resource].
- Published
- Research Triangle Park, N.C. : Research Triangle Institute, 2003.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- 26 pages : digital, PDF file
- Additional Creators
- Research Triangle Institute and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- The objective of this project is to develop a simple and inexpensive process to separate CO₂ as an essentially pure stream from a fossil fuel combustion system using a regenerable sorbent. The sorbents being investigated in this project are primarily alkali carbonates, and particularly sodium carbonate and potassium carbonate, which are converted to bicarbonates or intermediate salts through reaction with carbon dioxide and water vapor. Bicarbonates are regenerated to carbonates when heated, producing a nearly pure CO₂ stream after condensation of water vapor. This quarter, electrobalance tests suggested that high calcination temperatures decrease the activity of sodium bicarbonate Grade 1 (SBC No.1) during subsequent carbonation cycles, but there is little or no progressive decrease in activity in successive cycles. SBC No.1 appears to be more active than SBC No.3. As expected, the presence of SO₂ in simulated flue gas results in a progressive loss of sorbent capacity with increasing cycles. This is most likely due to an irreversible reaction to produce Na₂SO₃. This compound appears to be stable at calcination temperatures as high as 200 C. Tests of 40% supported potassium carbonate sorbent and plain support material suggest that some of the activity observed in tests of the supported sorbent may be due to adsorption by the support material rather than to carbonation of the sorbent.
- Report Numbers
- E 1.99:816480
- Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
01/01/2003.
David A. Green; Brian S. Turk; Jeffrey W. Portzer; William J. McMichael; Ya Liang; Douglas P. Harrison; Raghubir P. Gupta.
(US) - Type of Report and Period Covered Note
- Other Publications; 10/01/2002 - 12/31/2002
- Funding Information
- FC26-00NT40923
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