300MW机组循环流化床锅炉回转式空气预热器漏风率偏大的原因及对策

李星华; 邝伟; 江建忠; 谢泽良

doi:10.19666/j.rlfd.2008.03.012

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300MW机组循环流化床锅炉回转式空气预热器漏风率偏大的原因及对策

热力发电 2008年第3期页码：45-48

技术交流 | 更新时间：2025-09-28

- 300MW机组循环流化床锅炉回转式空气预热器漏风率偏大的原因及对策
- CAUSE AND COUNTERMEASURES FOR HIGHER AIR-LEAKAGE RATE OF THE ROTARY AIR PREHEATER USED FOR CFB BOILER OF 300 MW UNIT
- 作者机构：
  
  1. 白马循环流化床示范电站有限责任公司
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2008.03.012
  中图分类号： TK223.34;TK229.66
- 纸质出版：2008
- 稿件说明：
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李星华, 邝伟, 江建忠, 等. 300MW机组循环流化床锅炉回转式空气预热器漏风率偏大的原因及对策[J]. 热力发电, 2008,(3):45-48.

LI Xing-hua1, KUANG Wei1, JIANG Jian-zhong2, et al. CAUSE AND COUNTERMEASURES FOR HIGHER AIR-LEAKAGE RATE OF THE ROTARY AIR PREHEATER USED FOR CFB BOILER OF 300 MW UNIT[J]. Thermal Power Generation, 2008, (3): 45-48.
李星华, 邝伟, 江建忠, 等. 300MW机组循环流化床锅炉回转式空气预热器漏风率偏大的原因及对策[J]. 热力发电, 2008,(3):45-48. DOI： 10.19666/j.rlfd.2008.03.012.

LI Xing-hua1, KUANG Wei1, JIANG Jian-zhong2, et al. CAUSE AND COUNTERMEASURES FOR HIGHER AIR-LEAKAGE RATE OF THE ROTARY AIR PREHEATER USED FOR CFB BOILER OF 300 MW UNIT[J]. Thermal Power Generation, 2008, (3): 45-48. DOI： 10.19666/j.rlfd.2008.03.012.

摘要

300MW机组循环流化床锅炉回转式空气预热器存在漏风问题

分析认为径向和轴向密封片严重磨损、旁路密封片大量损坏、转子顶部及底部T型钢圆度误差偏大等是造成漏风的主要原因。对此

提出了控制空气侧与烟气侧压差

以及控制径向、轴向和旁路密封间隙等措施。实施后

空气预热器漏风率约减少了3.3%。

Abstract

The problem of air-leakage was existing in the rotary air preheater of circulating fluidized bed (CFB) boiler used for a 300 MW unit. It is believed from analysis that the main causes resulting in air leakage are as follows: severe wornout of radial and axial sealing strips

damage of large amount in by-pass sealing strips

large roundness error of T-shaped steel at top and bottom of the rotor etc. For these

measures

such as controlling the pressure difference at the air side and the fue gas side

and controlling the clearance of radial

axial

and by-pass sealings

etc

have been put forward. After implementation

the air leakage rate of said air preheater has decreased about 3.3%.

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