COAL GASIFICATION PLANT, COAL GASIFICATION PROCESS AND COAL GASIFICATION POWER PLANT

摘要

PROBLEM TO BE SOLVED: To reduce a discharge amount of CO₂ while inhibiting decrease of efficiency of an electric power plant.;SOLUTION: This coal gasfication power plant 100 has a coal gasification furnace 10 for gasifying coal to produce a combustion gas, a COS converter 20, a CO shift unit 30, an H₂S/CO₂ recovery unit 40, and a gas turbine 50 to which a generator 60 is connected. The COS in a product gas formed in the coal gasification furnace 10 is converted to H₂S by the COS converter 20. The CO present in the product gas after the COS conversion is converted to CO₂ by the CO shift unit 30. This CO₂ is recovered together with the H₂S present in the product gas by the H₂S/CO₂ recovery unit 40 using an amine solution. The product gas after the recovery of H₂S and CO₂ is supplied to the gas turbine 50 which is driven by this product gas as a fuel, and electric power is generated by the generator 60.;COPYRIGHT: (C)2005,JPO&NCIPI