Analysis and Elimination of the Cause of Furnace Slagging in a Supercritical Slit Type Burner W-Flame Boiler

Pengzhi XU; Pengyuan LIU; Jiajia GAO; Jianping HUANG; Guifu WU; Wen TANG

doi:10.12096/j.2096-4528.pgt.2018.023

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Analysis and Elimination of the Cause of Furnace Slagging in a Supercritical Slit Type Burner W-Flame Boiler

Power Generation and Environmental Protection | 更新时间：2025-07-04

- Analysis and Elimination of the Cause of Furnace Slagging in a Supercritical Slit Type Burner W-Flame Boiler
- Power Generation Technology Vol. 39, Issue 2, Pages: 146-152(2018)
- 作者机构：
  
  1.华电电力科学研究院有限公司, 浙江市杭州市 310001
  2.热科学与动力工程教育部重点实验室(清华大学热能工程系), 北京市海淀区 100084
- 作者简介：
- 基金信息：
- DOI：10.12096/j.2096-4528.pgt.2018.023
  CLC：
- Received：08 November 2017，
  
  Published：28 April 2018
- 稿件说明：
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Pengzhi XU, Pengyuan LIU, Jiajia GAO, et al. Analysis and Elimination of the Cause of Furnace Slagging in a Supercritical Slit Type Burner W-Flame Boiler[J]. Power Generation Technology, 2018, 39(2): 146-152.
DOI：

Pengzhi XU, Pengyuan LIU, Jiajia GAO, et al. Analysis and Elimination of the Cause of Furnace Slagging in a Supercritical Slit Type Burner W-Flame Boiler[J]. Power Generation Technology, 2018, 39(2): 146-152. DOI： 10.12096/j.2096-4528.pgt.2018.023.

摘要

为研究600 MW超临界W火焰锅炉翼墙上部结渣原因，进行试验研究。从炉内检查发现的结渣位置和试验测试结果分析炉内的流场情况。结果表明：下炉膛上部翼墙区域温度达到1 300℃以上，高于入炉煤软化温度；氧浓度低，CO浓度在10 000 μL/L以上，呈强还原性气氛，存在明显的结渣倾向；同时分析燃烧器下方与翼墙之间存在侧面向上的涡流，将熔融状态的煤灰颗粒带至翼墙上部墙面，这种特殊的流场是造成翼墙上部结渣的主要原因。结合试验分析结果，有针对性地采取燃烧调整、燃烧器喷口布置优化、防结焦风优化等措施，解决W火焰锅炉下炉膛严重结渣的问题，锅炉运行可靠性得到明显提高。

Abstract

In order to study the slagging reason of a 600 MW supercritical W-flame boiler

a test study is carried out. The content includes the slagging position detection

gas composition measurement

the temperature distribution measurement and numerical simulation calculation. The results show that the upper part of the down furnace area's temperature is above 1 300 degrees and higher than the softening temperature of the coal; oxygen concentration is low

the concentration of CO is above 10 000 μL/L

showing a strong reducing atmosphere

where is obvious tendency of slagging; the special flow field are also analyzed. According to the analysis of the test results

targeted measures are taken to solve the slagging problem of this W-flame boiler furnace

and the boiler's reliability has been improved obviously.

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references

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