Actions for Advanced separation technology for flue gas cleanup. Quarterly technical report No. 4 [electronic resource].

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Advanced separation technology for flue gas cleanup. Quarterly technical report No. 4 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
20 pages : digital, PDF file
Additional Creators
SRI International, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The objective of this work is to develop a novel system for regenerable SO₂ and NOₓ scrubbing of flue gas that focuses on (a) a novel method for regeneration of spent SO₂ scrubbing liquor and (b) novel chemistry for reversible absorption of NOₓ. In addition, high efficiency hollow fiber contactors (HFC) are proposed as the devices for scrubbing the SO₂ and NOₓ from the flue gas. The system will be designed to remove more than 95% of the SOₓ and more than 75% of the NOₓ from flue gases typical of pulverized coal-fired power plants at a cost that is at least 20% less than combined wet limestone scrubbing of SO(x) and selective catalytic reduction of NOₓ. In addition, the process will make only marketable byproducts, if any (no waste streams). The major cost item in existing technology is capital investment. Therefore, our approach is to reduce the capital cost by using high efficiency hollow fiber devices for absorbing and desorbing the S0₂ and NOₓ. We will also introduce new process chemistry to minimize stationary well-known problems with SO₂ and NOₓ absorption and desorption. For example, we will extract the SO₂ from the aqueous scrubbing liquor into an oligomer of dimethylaniline to avoid the problem of organic liquid losses in the regeneration of the organic liquid. Our novel chemistry for scrubbing NOₓ will consist of water soluble phthalocyanine compounds invented by SRI and also of polymeric forms of Fe{sup ++} complexes similar to traditional NO(x) scrubbing media described in the open literature. Our past work with the phthalocyanine compounds, used as sensors for NO and N0₂ in flue gases, shows that these compounds bind NO and NO₂ reversibly and with no interference from O₂, CO₂, SO₂, or other components of flue gas.
Report Numbers
E 1.99:doe/pc/91344--t4
doe/pc/91344--t4
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
04/01/1993.
"doe/pc/91344--t4"
"DE93016859"
"PYU-3501"
Gottschlich, D.; Majumdar, S.; Bhown, A.; Ventura, S.; Sirkar, K.K.; Bhaumik, D.
Type of Report and Period Covered Note
Quarterly; 01/01/1993 - 03/31/1993
Funding Information
AC22-92PC91344
View MARC record | catkey: 13840495