Abstract:

With the development of coalfired power plant flue gas waste heat recovery technology, flue gas temperature of low temperature economizer is limited to 130~150℃. According to the level of flue gas heat step utilization using principle, operation data of 600MW unit of Guodian Duyun Power Plant Company Limited of the existing scheme combined process of medium temperature economizer of low temperature economizer the preliminary design, based on the equivalent enthalpy drop method of traditional economic calculation, the results show that the technology of the energy saving effect is remarkable.

Key words:

flue gas waste heat;step utilization, economizer