Effect of low NO<sub>x</sub> combustion retrofit on coal ash fusion behavior of coal-fired boilers

XIANG Qunyang; YIN Zhiyuan; QIU Bo; ZHU Haowei; QIU Lichun; SHEN Li

doi:10.19666/j.rlfd.201905103

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Effect of low NO_x combustion retrofit on coal ash fusion behavior of coal-fired boilers

Thermal Power Generation Vol. 49, Issue 1, Pages: 104-108(2020)

更新时间：2025-09-28

- Effect of low NO_x combustion retrofit on coal ash fusion behavior of coal-fired boilers
- 作者机构：
  
  1. 浙江省火力发电高效节能与污染物控制技术研究重点实验室
  2. 浙江浙能技术研究院有限公司
  3. 浙江越华能源检测有限公司
  4. 浙江浙能电力股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201905103
  CLC： TK16
- Published Online：31 December 2019，
  
  Published：2020
- 稿件说明：
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XIANG Qunyang, YIN Zhiyuan, QIU Bo, et al. Effect of low NO_x combustion retrofit on coal ash fusion behavior of coal-fired boilers[J]. Thermal Power Generation, 2020, 49(1): 104-108.
DOI：

XIANG Qunyang, YIN Zhiyuan, QIU Bo, et al. Effect of low NO_x combustion retrofit on coal ash fusion behavior of coal-fired boilers[J]. Thermal Power Generation, 2020, 49(1): 104-108. DOI： 10.19666/j.rlfd.201905103.

摘要

为研究低氮燃烧改造对锅炉主燃区气氛以及对煤灰熔融特性的影响规律

首先对2台完成低氮燃烧改造的燃煤锅炉主燃区烟气成分进行测试

得出烟气成分分布范围;然后搭建一套气氛可调节的煤灰熔点测试系统

依据炉膛烟气成分测试结果

配制相应模拟气氛进行灰熔点测试

研究气氛变化对煤灰熔融特性的影响规律。结果表明:锅炉低氮燃烧改造后

主燃区CO体积分数由2%～3%上升至7%～15%

燃烧气氛由弱还原性气氛转变为强还原性气氛

煤灰熔点明显下降。

Abstract

In order to study the effects of low NO_x combustion retrofit on the atmosphere in main combustion zone of the boiler and on the coal ash fusion behavior

the compositions of flue gas in main combustion zone of two coalfired boilers after low NO_x combustion retrofit were tested and the flue gas composition distribution range was obtained. Then

an atmosphere-adjustable ash fusion test system was built up. The atmosphere of the ash fusion tests were prepared to simulate the combustion area flue gas atmosphere of the boilers studied. The results show that

after the low NO_x combustion retrofit

the volume fraction of CO in the main combustion area increased from 2%～3% to 7%～15%

the combustion atmosphere changed from weak reducing atmosphere to strong reducing atmosphere

and the ash fusion point decreased obviously.

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Effect of low NOx combustion retrofit on coal ash fusion behavior of coal-fired boilers

DOI：10.19666/j.rlfd.201905103

摘要

Abstract

关键词

Keywords

references

Effect of low NO_x combustion retrofit on coal ash fusion behavior of coal-fired boilers