Supercritical water combustion power generation method and supercritical water combustion power generation system

摘要

PROBLEM TO BE SOLVED: To enable utilization of the original material such as low quality charcoal, heavy oil, and biomass as a fuel by continuously supplying the fluid fuel including the organic material and the alkali solution to a heat exchanger integrated burner, and burning the organic material underwater at a temperature and a pressure near supercritical state. SOLUTION: Organic material 1 is mixed with water by a slurry adjusting unit 2 so as to adjust the fuel slurry as a fluid fuel. The slurry and the alkali solution 3 are pressurized by each pump 4, 5 so as to be passed through a waste heat recording heat-exchanger 6. Heat from the mixture fluid is exchanged by the heat of the fluid flowed out of a heat exchanger integrated burner 7, and temperature of the mixture fluid becomes 400-700 deg.C. The heated mixture fluid is supplied to a heat exchanger integrated burner 7, and the air 8 as the oxidant gas is compressed by a compressor 9, and passed through the heat exchanger 6 for heating, and the compressed and heated air is supplied to the burner 7. The organic material included in the mixture fluid is burned with the oxygen included in the air, and steam is generated by the combustion heat of the heat exchanger integrated burner 7, and electrical energy is extracted by a power generator 11.