The recovery of exhaust steam waste heat for heating in thermal power plants can significantly reduce the cold-end losses of the unit.This paper proposes a method to retrofit power plant units by extracting exhaust steam and using a steam injector to eject it for heating purposes.The results indicate that under rated conditions,589 t/h of latent heat from exhaust steam can be recovered,reducing the annual average standard coal consumption for power generation of the No.2 unit by 61 g/(kW·h),increasing the heating capacity of the entire plant by 131 MW,and expanding the heating area by 2.62 million m2.After retrofit with exhaust steam,the heating capacity of the unit is increased by 131 MW,with a corresponding increase in heating output of 1.34 million GJ/year.This translates into an expanded heating area of 2.62 million m2 and an annual increase in revenue and cost savings of 29 million yuan.
维普
万方数据