METHOD FOR IMPROVING EFFICIENCY OF OXY FUEL COMBUSTION POWER GENERATION SYSTEM

摘要

PURPOSE: A method for improving the efficiency of a pure oxygen combustion generation system improves the heat efficiency and reduces energy use by utilizing compression heat generated in the process of pressing exhaust gas for an auxiliary heat source to heat boiler water. CONSTITUTION: A pure oxygen combustion generator comprises an air separation unit, a combustion unit, a carbon dioxide purifier, and one or more heat exchangers. The combustion unit mixes and burns oxygen provided from the air separation unit with fuel and discharges exhaust gas. The carbon dioxide purifier comprises one or more MS towers(210) and a carbon dioxide separator(200). The carbon dioxide separator disconnects the carbon dioxide of the exhaust gas from the MS towers and discharges the undetached gas. The heat exchangers exchange the heat of disused steam from the combustion unit with or recycling gas from the MS towers of the air separation unit.