China Huaneng Group Co., Ltd. is one of the five largest power generation groups in China. Huaneng Changchun-Thermal Power Plant has a total installed capacity of 4×300MW.
The Changchun Thermal Power Plant needs to provide heating for about 11 million square meters of the city. Like most thermoelectric companies, it faces the dilemma of increasing demand for heating and reducing emissions from burning coal. Making full use of the waste heat of flue gas and reducing the emission with mature and reliable technology and ecological protection emission technology has become one choice. And Accessen’s shell-and-plate heat exchangers are the core equipment of this system. The low-temperature economizer is connected with the low-pressure steam recovery system. The condensate is drawn out in whole or in part from the appropriate place and sent to the low-temperature economizer to absorb the heat of exhaust gas. It can reduce the temperature of exhaust gas, raise the temperature to recover the heat energy, and then use the power to heat the feedwater (in summer) or the heating network water (in winter) through Accessen’s plate& shell heat exchangers.
China Huaneng Group Co., Ltd. utilizes a low-temperature economizer system project to make full use of flue gas waste heat. The 70 ℃ hot coal-water is used to cool down the flue gas from 120 ℃ ~ 150 ℃ to 85 ℃ ~ 100 ℃, and the heat medium water heated to 110 ℃. The high-temperature heat water is released to the steam condensate of the boiler water system (summer) or the return water (winter) through Accessen’s AWPS series plate&shell heat exchangers to increase the heating area.