Equipment modification for lignite co-firing in a 600MW unit boiler

WANG Rong; AN Hongwen; WANG Liuhu Inner Mongolia Jing Long Power Plant Co.

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Equipment modification for lignite co-firing in a 600MW unit boiler

更新时间：2025-09-28

- Equipment modification for lignite co-firing in a 600MW unit boiler
- Thermal Power Generation Vol. 42, Issue 8, Pages: 146-149(2013)
- 作者机构：
  
  内蒙古京隆发电有限责任公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621.2
- Published：2013
- 稿件说明：
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WANG Rong, AN Hongwen, WANG Liuhu Inner Mongolia Jing Long Power Plant Co.. Equipment modification for lignite co-firing in a 600MW unit boiler[J]. Thermal power generation, 2013, 42(8): 146-149.
DOI：

WANG Rong, AN Hongwen, WANG Liuhu Inner Mongolia Jing Long Power Plant Co.. Equipment modification for lignite co-firing in a 600MW unit boiler[J]. Thermal power generation, 2013, 42(8): 146-149. DOI：

摘要

对内蒙古京隆发电有限责任公司亚临界2×600MW机组锅炉磨煤机喷嘴环进行扩容改造

通过改变空气预热器转向、扩大一次风风仓面积及增加径向软密封

使空气预热器(空预器)出口热一次风温升高30℃左右

漏风率大幅下降

显著提高了磨煤机干燥、研磨出力

降低了一次风系统阻力

在满足锅炉大比例掺烧褐煤要求的同时

降低了风机电耗

减少了一次风机失速的危险

经济效益显著。

Abstract

At present

more and more power plants began to burn lignite to ease the negative situation of coal supply tension and the rising price of coal.But high moisture content in lignite may lead to insufficient coal drying output and affect the safe operation of coal pulverizing system.Capacity expansion revamp on nozzle ring of coal pulverizer in sub-critical 2×600MW unit boilers of Inner Mongolia Jing Long Power Plant was performed.By changing the air preheater turning

enlarging the primary air warehouse area and adding the radial soft seal

the hot primary air temperature at outlet of the air preheater was increased by about 30℃and the air leakage rate in air preheater dropped significantly.Moreover

the drying and grinding capacity of the coal mill was dramatically enlarged

the resistance in primary air system decreased.On the premise of satisfying the requirements of firing lignite with large proportion

the power consumption of fan facility system and danger of primary air warehouse stalling were decreased.

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Related Institution

Nanyang Yahekou Power Generation Co., Ltd

School of Energy Power and Mechanical Engineering, North China Electric Power University

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China Energy Engineering Group Northwest China Electrical Power Test Research Institute Co., Ltd.

Xi'an Thermal Power Research Institute Co.,Ltd.

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