Adjustment on reheat steam temperature for a 660 MW double-reheat boiler

WANG Lin; YANG Bo; GAO Jinghui; ZHANG Yafu; ZHAO Zhidan; WANG Hongyu; MENG Yingqi

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Adjustment on reheat steam temperature for a 660 MW double-reheat boiler

Thermal Power Generation Vol. 46, Issue 8, Pages: 91-95(2017)

更新时间：2025-05-30

- Adjustment on reheat steam temperature for a 660 MW double-reheat boiler
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621.2
- Published：2017
- 稿件说明：
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WANG Lin, YANG Bo, GAO Jinghui, et al. Adjustment on reheat steam temperature for a 660 MW double-reheat boiler[J]. Thermal Power Generation2017, 46(8): 91-95.
DOI：

WANG Lin, YANG Bo, GAO Jinghui, et al. Adjustment on reheat steam temperature for a 660 MW double-reheat boiler[J]. Thermal Power Generation2017, 46(8): 91-95. DOI：

摘要

为解决我国首台二次再热机组锅炉2级再热汽温大幅低于设计值的问题

对入炉煤质及锅炉各级受热面的吸热量情况进行了分析

改进了烟气再循环调温方案。在此基础上制定了包括优化磨煤机组合形式、改变燃烧器仰角、增大燃尽风量、改善吹灰器投用方式和调整烟气再循环量等措施的综合提温方案

并开展了燃烧器摆角、烟气再循环风机转速对一二次再热汽温影响的工况试验。经调整优化后

锅炉再热汽温在高负荷时可以达到610~620℃

中低负荷时则为590~610℃

与设计值相差不大

2级再热汽温偏低的问题基本得到解决

相关调试经验对后续同类机组具有工程参考价值。

Abstract

The reheat steam temperature of China's firstly built double-reheat boiler is sharply lower than the design value. To solve this problem

the quality of coal as fired and the heat absorption capacity of the boiler heating surface was analyzed. Moreover

the flue gas recirculation thermal control scheme was improved. On this basis

the comprehensive temperature improvement scheme was proposed

including optimizing the coal mill combination type

regulating the burner elevation angle

increasing the over fired air volume

improving the soot-blower'sputting-in-service mode and adjusting the flue gas recirculation amount. Furthermore

the condition test to explore the effect of burner's swinging angle and flue gas recirculation fan speed on temperature of the first reheat and second reheat steam were carried out. After debugging optimization

the reheat steam temperature of the boiler can reach 610~620 ℃ at high load and 590~590 ℃ at low and medium loads

which are similar with the design value

indicating the problem of low reheat steam temperature was solved well. The debugging experience has project reference value for subsequent similar units.

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Related Author

ZHANG Yifan

LIANG Faguang

YANG Yu

BAI Wengang

YAO Mingyu

CHEN Guangyuan1

ZOU Xianhong2

ZHANG Xiqiang1

Related Institution

State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology

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School of Environmental Science and Engineering, Chang'an University

School of Energy and Power Engineering, Xi'an Jiaotong University

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