THE METHOD FOR EFFICIENCY IMPROVEMENT THAT UTILIZING WASTE HEAT RECOVERY OF AIR COMPRESSORS FOR OXY COMBUSTION POWER PLANT

摘要

PURPOSE: A method for improving efficiency through collecting waste heat from an air compressor for a pure oxygen combustion electric power system is provided to reduce the consumption of cooling water because residual compression heat is removed inside a cooler upon completion of collecting compression heat in the compressed air. CONSTITUTION: A pure oxygen combustion electric power system comprises an air compressor, an air separation device, and a combustion device. The pure oxygen combustion electric power system includes one or more heat exchangers selected from a group consisting of a first heat exchanger, a second heat exchanger, and a third heat exchanger. The first heat exchanger exchanges heat between oxygen separated from the air separation device and oxygen compressed by the air compressor. The second heat exchanger exchanges heat between the air, and nitrogen which is separated from the air separation device. The third heat exchanger exchanges heat between the air and water for a boiler of the pure oxygen combustion electric power system.