350MW供热机组的低温省煤器经济性分析

Research on the low-temperature of the co-generation unit

对某350 MW供热机组进行低温省煤器改造,在空预器与除尘器之间加装低温省煤器,在冬季供暖时,利用烟气余热加热热网回水;夏季纯凝工况下,利用余热加热凝结水,排挤汽轮机抽汽,并对改造结果进行了经济性分析。

The design for a 350 MW co -generation unit added the low- temperature economizer was carried out. The low-temperature economizer was laid between the air preheater and the dust remover. During the heating period in winter, the waste heat of the flue gas was used to heat the backwater of the heating network. During the condensing condition, the condensate water was heated by the waste heat. The extraction steam was reduced. The economy analyse was conducted by the thermal test,