宽负荷循环流化床锅炉电除尘器运行特性

郑钦臻; 李加丰; 付辉; 黄逸凡; 刘振; 闫克平

doi:10.19666/j.rlfd.201704003

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宽负荷循环流化床锅炉电除尘器运行特性

热力发电 2018年47卷第1期页码：13-18

热能科学研究 | 更新时间：2025-09-28

- 宽负荷循环流化床锅炉电除尘器运行特性
- Operation performance of electrostatic precipitator in circulating fluidized bed boiler in wide load range
- 作者机构：
  
  浙江大学化学工程与生物工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201704003
  中图分类号： TK229.66
- 纸质出版：2018
- 稿件说明：
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郑钦臻, 李加丰, 付辉, 等. 宽负荷循环流化床锅炉电除尘器运行特性[J]. 热力发电, 2018,47(1):13-18.

ZHENG Qinzhen, LI Jiafeng, FU Hui, et al. Operation performance of electrostatic precipitator in circulating fluidized bed boiler in wide load range[J]. Thermal Power Generation, 2018, 47(1): 13-18.
郑钦臻, 李加丰, 付辉, 等. 宽负荷循环流化床锅炉电除尘器运行特性[J]. 热力发电, 2018,47(1):13-18. DOI： 10.19666/j.rlfd.201704003.

ZHENG Qinzhen, LI Jiafeng, FU Hui, et al. Operation performance of electrostatic precipitator in circulating fluidized bed boiler in wide load range[J]. Thermal Power Generation, 2018, 47(1): 13-18. DOI： 10.19666/j.rlfd.201704003.

摘要

为提高电除尘器对循环流化床(CFB)锅炉宽负荷工况的适应性

在某135 MW机组CFB锅炉上对不同工况下电除尘器运行功率及其出口烟尘颗粒排放控制进行了试验研究

得到电除尘器运行功率与其出口颗粒物排放质量浓度的关系。结果表明:由于负荷的变化导致烟气温度改变

而烟气温度直接影响电除尘器运行功率

故CFB锅炉电除尘器除尘效果对机组负荷的变化极为敏感;烟气温度在100~200℃内

135 MW机组CFB锅炉烟气温度每降低20℃

烟尘比电阻可降低约1个数量级

电除尘器运行功率可提高约100 k W;降低烟气温度是宽负荷CFB锅炉电除尘器保持稳定高效运行的一项重要措施。

Abstract

In order to enhance the adaptability of electrostatic precipitator(ESP) to wide load range condition of circulating fluidized bed(CFB) boiler

an experimental research about the ESP operating power and emission control was carried out in a 135 MW CFB boiler

and the relationship between the particulate matters emission concentration and ESP operating power was obtained. The results indicate that

due to the variation in unit load

the flue gas temperature changed

which directly affected operating power of the ESP

so dust removal effect of the ESP is very sensitive to the boiler load change. With the flue gas temperature ranging from 100 ℃ to 200℃

the operating power of the ESP would increase by about 100 k W and the dust specific resistance would reduce by about 1 magnitude when the flow gas temperature reduces by about 20 ℃. Decreasing the flue gas temperature plays an important role in keeping the ESP operating stably with a high efficiency.

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