THE PROBLEMS RESULTED FROM MIXEDLY BURNING BROWN COAL IN A BITUMINOUS COAL FIRED BOILER AND RETROFIT THEREOF

WANG Wen-sheng1; SHANG Hai-jun2; ZHU Zhi-fu31.North-east Electric Power Science Research Institute Co Ltd

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THE PROBLEMS RESULTED FROM MIXEDLY BURNING BROWN COAL IN A BITUMINOUS COAL FIRED BOILER AND RETROFIT THEREOF

Thermal Power Generation Vol. 38, Issue 9, Pages: 60-62(2009)

更新时间：2025-09-28

- THE PROBLEMS RESULTED FROM MIXEDLY BURNING BROWN COAL IN A BITUMINOUS COAL FIRED BOILER AND RETROFIT THEREOF
- 作者机构：
  
  1. 东北电力科学研究院有限公司
  2. 西安热工研究院有限公司
  3. 浑江发电公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK227.1
- Published：2009
- 稿件说明：
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WANG Wen-sheng1, SHANG Hai-jun2, ZHU Zhi-fu31.North-east Electric Power Science Research Institute Co Ltd. THE PROBLEMS RESULTED FROM MIXEDLY BURNING BROWN COAL IN A BITUMINOUS COAL FIRED BOILER AND RETROFIT THEREOF[J]. Thermal Power Generation, 2009, 38(9): 60-62.
DOI：

WANG Wen-sheng1, SHANG Hai-jun2, ZHU Zhi-fu31.North-east Electric Power Science Research Institute Co Ltd. THE PROBLEMS RESULTED FROM MIXEDLY BURNING BROWN COAL IN A BITUMINOUS COAL FIRED BOILER AND RETROFIT THEREOF[J]. Thermal Power Generation, 2009, 38(9): 60-62. DOI：

摘要

针对670t/h烟煤锅炉掺烧褐煤时遇到的制粉系统爆炸和出力低、机组带负荷能力低、落煤管堵煤、送粉系统不安全等问题

提出了将制粉系统干燥介质的组成由原设计的"热风+再循环"方式改造为"热炉烟+热风+再循环"方式;送粉方式由原设计的热风送粉改造为"温风"送粉。实施后

在掺烧较高比例褐煤时设备的安全和经济性得以提高。

Abstract

Directing against the problems resulted from mixedly burning brown coal in a 670 t/h bituminous coal fired boiler

such as exploision in the coal-pulverizing system

low output capacity of the said system

low capability of the unit to take load

plugging in the coal chute

and unsafety in the pulverized coal sending system

etc.

a scheme of retrofitting the composition of drying medium in the coal pulverizing system from originally designed mode of "hot air + recirculation"to a mode of "hot flue gas + hot air + recirculation"

has been put forward

and the pulverized coal sending mode being retrofitted from originally designed"by using hot air" to a mode "by using warm air".The said retrofit scheme is realistic and feasible.After implementation

the safety and economic efficiency of said equipment have been enhanced during the time of mixedly burning larger proportion of brown coal.

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