Retrofitting Of Flue Gas Waste Heat Recovery System And ESP Efficiency Improvement Of XINCHANG Power Plant

Today energy supply is becoming increasingly tense, energy saving is the fifth energy as well as the coal, electricity, petroleum and natural gas. The heat loss of exhaust gas is the largest loss of boiler. To a thermal power plant, the high exhaust gas temperature is always the main reasons that effect the economic operation of the boiler. Flue gas temperature increases every 10℃, the boiler thermal efficiency decreases about 1%. High temperature of boiler flue gas not only leads to large heat loss of boiler, increases power consumption of the induced fan and desulfurization system due to large exhaust volume flow, but also leads to plant electricity rate, and the water consumption of the desulphurization system process. In order to answer the call of energy conservation and emission reduction from Chinese government, XINCHANG power plant became to take flue gas waste heat recovery and reconstruction project.This paper discussed with flue gas waste heat recovery and reconstruction project of the XINCHANG power plant #1 boiler, introduces the technical background,application status in domestic and international, treatment of detailed technique, features and guarantee measures and so on.There are achievements and purposes as follows: recovery boiler flue gas waste heat, heat of condensation water, to reduce the coal consumption of power plant, improve the economy; reduce the flue gas temperature, reducing the dust resistivity, the chimney dust emission to reach the national. It has the remarkable characteristics of small engineering quantity, simple structure, reliable performance, convenient mainten ance, low initial cost, energy-saving effect and so on, has a good development prospects.