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Combustion of coal-gas fuels in a staged combustor [electronic resource].

Published:
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1982.
Physical Description:
Pages: 11 : digital, PDF file
Additional Creators:
Lewis Research Center and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
Gaseous fuels produced from coal resources have been considered for use in industrial gas turbines. Such fuels generally have heating values much lower than the typical gaseous fuel, natural gas; the low heating value could result in unstable or inefficient combustion. Additionally, coal gas fuels may contain ammonia which if oxidized in an uncontrolled manner could result in unacceptable NO/sub x/ exhaust emission levels. Previous investigations have indicated that staged, rich-lean combustion represents a desirable approach to achieve stable, efficient, low NO/sub x/ emission operation for coal-derived liquid fuels containing up to 0.8-wt % nitrogen. An experimental program has been conducted to determine whether this fuel tolerance can be extended to include coal-derived gaseous fuels. The results of tests with three nitrogen-free fuels having heating values of 100, 250, and 350 Btu/scf and a 250 Btu/scf heating value doped to contain 0.7% ammonia are presented. The test results permit the following conclusions to be drawn: (1) Staged, rich-lean combustion represents the desirable approach to achieve ultra-low NO/sub x/ and CO emissions for coal gas fuels with heating values of 210 kJ/mol (238 Btu/scf) or higher. (2) Lean combustion represents the desirable approach to achieve ultra-low NO/sub x/ and CO emissions for coal gas fuels with low heating values (84 kJ/mol (95 Btu/scf)). (3) Staged combustion has the ability to limit NH/sub 3/ to NO/sub x/ conversion rates to less than 5%. NO/sub x/ emissions below the EPA limit can readily be achieved.
Report Numbers:
E 1.99:doe/nasa/13111-12
E 1.99: nasa-tm-82987
E 1.99: conf-821018-8
conf-821018-8
nasa-tm-82987
doe/nasa/13111-12
Subject(s):
Other Subject(s):
Note:
Published through SciTech Connect.
01/01/1982.
"doe/nasa/13111-12"
" nasa-tm-82987"
" conf-821018-8"
"DE83001100"
Rosfjord, T J; McVey, J B; Sederquist, R A; Schultz, D F.
United Technologies Corp., East Hartford, CT (USA). Research Center
United Technologies Corp., South Windsor, CT (USA). Power Systems Div.
Funding Information:
AI01-77ET13111
View MARC record | catkey: 13843486