Air pollution control and heat recovery system and process for c

Details Air pollution control and heat recovery system and process for c Air pollution control and heat recovery system and process for c

1994-12-15

1996-09-10

Simmons, David A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

4232421, 423522, C01B 1790, C01B 2146

Patent

active

055543502

ABSTRACT:
A coal fired power plant includes the catalytic reduction of NO.sub.x in the flue gas and the catalytic oxidation of SO.sub.2 to SO.sub.3 followed by the hydration of the SO.sub.3 to H.sub.2 SO.sub.4 vapor and then the condensation to H.sub.2 SO.sub.4 liquid. The condensation takes place in a wet sulfuric acid condenser by heat exchange with incoming combustion air. A portion of the heat picked up by that combustion air is used to provide a portion of the heat for the condensate from the steam turbine. The combustion air is then fed to an air preheater and to the steam generator as primary and secondary combustion air.

REFERENCES:
patent: 4470449 (1984-09-01), Ziebold
patent: 5424044 (1995-06-01), Kalka
"A Capital and Operating Cost Evaluation of the SNOX Process", by D. C. Borio and D. J. Collins, Mar. 1994, Comparitive Econ. of Emerging Clean Coal Tech. III Conference pp. 1-10.
"Demonstrating the WSA-SNOX Process Through the CCT Program", by W. H. Kingston, S. Cunninghis, R. J. Evans and C. H. Speth, Oct. 1990 ASME/IEEE Power Generation Conference, pp. 1-9.
Olsen et al., "Unit Processes And Principles of Chemical Engeneering" pp. 1-3, 1932.
Kerms, "Process Heat Transfer"pp. 676-678, 1950.

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