TEST STUDY ON ADDITIONALLY INSTALLING PNEUMATIC SLIDE PLATE GATE INTO AIR-MIXING DUCT AT INLET OF THE COAL PULVERIZER

ZHANG Tang-lin1; LIU Wei-ping2; CAO Bin2; LIU Qi31.Guohua Jinjie Energy Co Ltd

doi:10.19666/j.rlfd.2008.09.015

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TEST STUDY ON ADDITIONALLY INSTALLING PNEUMATIC SLIDE PLATE GATE INTO AIR-MIXING DUCT AT INLET OF THE COAL PULVERIZER

更新时间：2025-09-28

- TEST STUDY ON ADDITIONALLY INSTALLING PNEUMATIC SLIDE PLATE GATE INTO AIR-MIXING DUCT AT INLET OF THE COAL PULVERIZER
- Thermal Power Generation Issue 9, Pages: 53-55(2008)
- 作者机构：
  
  1. 国华锦界能源有限公司
  2. 华电大通发电有限责任公司
  3. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2008.09.015
  CLC： TK223.25
- Published：2008
- 稿件说明：
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ZHANG Tang-lin1, LIU Wei-ping2, CAO Bin2, et al. TEST STUDY ON ADDITIONALLY INSTALLING PNEUMATIC SLIDE PLATE GATE INTO AIR-MIXING DUCT AT INLET OF THE COAL PULVERIZER[J]. Thermal power generation, 2008, (9): 53-55.
DOI：

ZHANG Tang-lin1, LIU Wei-ping2, CAO Bin2, et al. TEST STUDY ON ADDITIONALLY INSTALLING PNEUMATIC SLIDE PLATE GATE INTO AIR-MIXING DUCT AT INLET OF THE COAL PULVERIZER[J]. Thermal power generation, 2008, (9): 53-55. DOI： 10.19666/j.rlfd.2008.09.015.

摘要

针对磨煤机停运后热风漏风量大、磨煤机内部温度高的问题

提出了在磨煤机入口混合风道加装混合风气动插板门

利用磨煤机入口冷、热风压差来密封热风以阻止其漏入磨煤机内的改造方案。试验结果表明

加装混合风门后磨煤机内部温度由56℃降至28℃

漏风量从20.88t/h降至9.32t/h

锅炉排烟温度下降

锅炉效率增加

节能效果明显。

Abstract

Directing against problems of large hot air leakage and high temperature inside the coal pulverizer after its shutdown

a retrofit scheme of additionally installing pneumatic slide plate gate into air-mixing duct at inlet of the coal pulverizer has been put forward

to use the pressure difference between hot and cold air at the inlet of coal pulverizer for sealing the hot air.Results of test show that the temperature inside the coal pulverizer has decreased from 56 ℃ to 28 ℃

and the air leakage amount has reduced from 20.88 t/h to 9.32 t/h after shut-down of the coal pulverizer

enhancing the boiler's efficiency

having remarkable energy-saving effect.

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