SYSTEM, METHOD AND APPARATUS FOR IMPROVING POWER OUTPUT AND EFFICIENCY OF COMBINED CYCLE POWER PLANT

摘要

PROBLEM TO BE SOLVED: To improve power output and efficiency of a combined cycle power plant, by increasing the temperature and a mass flow of exhaust gas prior to introduction to a heat recovery steam generator, by mixing a combustion product with the exhaust gas from a gas turbine.;SOLUTION: When this combined cycle power plant includes a compressor 110, the gas turbine 105, a combustor 120 and the heat recovery steam generator 110, excess air from the compressor 110 can be extracted and expanded to generate power. The expanded air can then be mixed with at least one kind of combustible fuel to generate heated combustion product. The heated combustion product can be mixed with the exhaust gas from the gas turbine 105 to increase temperature of the exhaust gas prior to introduction to the heat recovery steam generator 110. This increase in temperature of the exhaust gas from the gas turbine 105 provides additional energy for generating steam and power and improves performance of the heat recovery steam generator 110.;COPYRIGHT: (C)2011,JPO&INPIT