The coal gasifier in an integrated gasification combined cycle (IGCC) power plant produces a gas mixture with the following volumetric percent composition:
Product CH4 H2 CO CO2 N2 H2O H2S NH3
% vol. 0.3 29.6 41.0 10.0 0.8 17.0 1.1 0.2
This gas is cooled to 40°C, 3 MPa, and the H2S and NH3 are removed in water scrubbers. Assuming that the resulting mixture, which is sent to the combustors, is saturated with water, determine the mixture composition and the theoretical air€“fuel ratio in the combustors.

Transcribed Image Text:

CO, 11 н, 29.6 CO N2 сн, 0.3 41.0 10.0 0.8 81.7