| 摘要 |
Syngas for use, as fuel in the combustion turbine of an IGCC process is heated to a maximum temperature of about 350° F. (177° C.) prior to entering the combustor. Non-combustible diluent gas and additional fuel with a high heating value is also added to the syngas to increase the total heating value of the feed to the combustor of the gas turbine. The cooler temperature allows for more mass flow to the combustion turbine, allowing for greater sensible heat in the syngas to offset the latent heat loss due to the cooler temperature. Because the syngas/diluent feed steam is not heated to the high temperatures disclosed in the prior art, the steam that would otherwise heat the feed stream is available for power generation in the steam turbine, increasing its individual power output and the overall power output of the IGCC process.
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