Application analysis of backwash method for lowlow temperature economizer of supercritical unit

Abstract

Abstract:

A lowlow temperature economizer was installed in the #1 unit of Huanggang Dabie Mountain Power Generation Company Limited during its ultralow emission modification which was carried out during A class maintenance. In the practical application, the thermal system of the lowlow temperature economizer is restricted by the condenser water flow in both cold and hot condition, and cannot get highflow flushing. During ultralow emission modification in the A class maintenance of #2 unit，a backflush door was installed. Backflushing method is adopted to shorten the washing time and save a lot of desalination water. Therefore, it is a good chance to carry out backwashing modification on lowlow temperature economizer during C class maintenance on #1 unit, which will achieve good results.

Key words:

supercritical unit, ultralow emissions, economizer, highflow flushing, backflush door, desalination water

WEI Dong.

Application analysis of backwash method for lowlow temperature economizer of supercritical unit

[J]. Huadian Technology, 2018, 40(2): 40-42.

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Application analysis of backwash method for lowlow temperature economizer of supercritical unit

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