CAUSE ANALYSIS OF OVERTEMPERATURE IN LOW-TEMPERATURE SUPERHEATER FOR A W-SHAPED FLAME BOILER BURNING ANTHRACITIC COAL FOR SUPERCRICIAL 600 MW UNIT

HUANG Wei1; LI Wenjun1; PENG Min1; XIONG Weili1; CHEN Yuehua2; XIE Xiaohong2; ZOU Zimin21.Hunan Provincial Electric Power Testing and Research Institute

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CAUSE ANALYSIS OF OVERTEMPERATURE IN LOW-TEMPERATURE SUPERHEATER FOR A W-SHAPED FLAME BOILER BURNING ANTHRACITIC COAL FOR SUPERCRICIAL 600 MW UNIT

更新时间：2025-09-28

- CAUSE ANALYSIS OF OVERTEMPERATURE IN LOW-TEMPERATURE SUPERHEATER FOR A W-SHAPED FLAME BOILER BURNING ANTHRACITIC COAL FOR SUPERCRICIAL 600 MW UNIT
- Thermal Power Generation Vol. 39, Issue 9, Pages: 54-56(2010)
- 作者机构：
  
  1. 湖南省电力公司试验研究院
  2. 大唐华银金竹山火力发电分公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK227.1
- Published：2010
- 稿件说明：
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HUANG Wei1, LI Wenjun1, PENG Min1, et al. CAUSE ANALYSIS OF OVERTEMPERATURE IN LOW-TEMPERATURE SUPERHEATER FOR A W-SHAPED FLAME BOILER BURNING ANTHRACITIC COAL FOR SUPERCRICIAL 600 MW UNIT[J]. Thermal power generation, 2010, 39(9): 54-56.
DOI：

HUANG Wei1, LI Wenjun1, PENG Min1, et al. CAUSE ANALYSIS OF OVERTEMPERATURE IN LOW-TEMPERATURE SUPERHEATER FOR A W-SHAPED FLAME BOILER BURNING ANTHRACITIC COAL FOR SUPERCRICIAL 600 MW UNIT[J]. Thermal power generation, 2010, 39(9): 54-56. DOI：

摘要

大唐华银金竹山火力发电分公司超临界600MW机组燃用无烟煤的"W"型火焰锅炉在调试中出现低温过热器管壁超温现象

分析认为其主要为锅炉低负荷运行时氧量过盈

炉膛温度低

再生油燃烧不良

含煤粉的可燃物质在炉膛内未充分燃尽并在尾部低温过热器处积聚引起轻微的二次燃烧所致。为此

通过采取控制燃烧风量、加强吹灰等措施后

锅炉在燃用设计的金竹山劣质低挥发分无烟煤时低温过热器管壁温度可控制在460℃以内

其超温问题得到有效地解决。该措施对超临界600MW机组燃用无烟煤的"W"火焰锅炉设计、运行具有实际指导意义。

Abstract

The overtemperature phenomenon has occurred in dubugging of a W-shaped flame boiler burning anthracitic coal for supercritical 600 MW unit equipped in Datang Huayin Lengshuijiang Thermal Power-Generation Branch Company

it is believed from analysis that the main causes

are due to plenty of oxygen in operation under low load of boiler

the temperature in furnace being lower

the burning of regenerated oil being bad

making the combustible substances containing puverized coal haven't fully burnt away in the furnace and accumulated on low-temperatuer superheater in the tail section of boiler

resulting in slight secondary combustion.For this

through adoptation of some measures

such as improving the burning of regenerated oil

enhancing temperature in the furnace

increasing air flow above the arch

lowering the centre of flame etc.

the tube-wall temperature of low-temperature superheater while burning inferior quality anthracitic coal from Jinzhushan can be controlled within 460 ℃

the problem of tube-wall overtemperature on lowtemperature superheater has been effectively resolved.These measures have practical guiding significance for design and operation of W-shaped flame boilers equipped for supercritical 600 MW untis burning anthracitic coal.

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