Study of Numerical Simulation for Flow Distribution in 200 MW Electrostatic-bag Precipitator With Different Filtration Velocity

Lidong ZHANG; Tingting GUO; Shaohua LI

doi:10.12096/j.2096-4528.pgt.2018.067

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Study of Numerical Simulation for Flow Distribution in 200 MW Electrostatic-bag Precipitator With Different Filtration Velocity

Power Generation and Environment Protection | 更新时间：2025-06-06

- Study of Numerical Simulation for Flow Distribution in 200 MW Electrostatic-bag Precipitator With Different Filtration Velocity
- Power Generation Technology Vol. 39, Issue 5, Pages: 438-442(2018)
- 作者机构：
  
  1.东北电力大学能源与动力工程学院, 吉林省吉林市 132012
  2.中国大唐集团科学技术研究院有限公司, 北京市石景山区 102206
- 作者简介：
- 基金信息：
  
  Changjiang Scholars and Innovative Research Team in University, China(IRT_17R19)
- DOI：10.12096/j.2096-4528.pgt.2018.067
  CLC：
- Received：07 August 2018，
  
  Published：30 October 2018
- 稿件说明：
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Lidong ZHANG, Tingting GUO, Shaohua LI. Study of Numerical Simulation for Flow Distribution in 200 MW Electrostatic-bag Precipitator With Different Filtration Velocity[J]. Power Generation Technology, 2018, 39(5): 438-442.
DOI：

Lidong ZHANG, Tingting GUO, Shaohua LI. Study of Numerical Simulation for Flow Distribution in 200 MW Electrostatic-bag Precipitator With Different Filtration Velocity[J]. Power Generation Technology, 2018, 39(5): 438-442. DOI： 10.12096/j.2096-4528.pgt.2018.067.

摘要

电袋复合除尘器电场内部气流分布是影响电袋复合除尘器效率最主要的因素之一，采用标准

k-ε

紊流模型，模拟了0.8、1.2、1.6、2和2.4 m/min 5种过滤风速电袋复合除尘器的流场分布情况。结果表明：电袋复合除尘器内部气流速度出现了明显的分区，在与电除尘相邻的袋除尘区下部空间出现了明显的高速区，过滤速度为1.6 m/min时的高速区面积最小，且随着速度的增加在袋除尘区靠近出口的后墙上部滤袋处出现了狭长的气流聚集区，这将增大滤袋负荷的不均匀度。在袋除尘下部区域、袋除尘区域及净气室区域选取有代表的截面进行流场均匀性检验，得出速度为0.8 m/min时的不均匀性波动最小，且在袋除尘区随着速度增大流场不均匀性也增大，但同时随着高度的增高整体都呈现下降的趋势。

Abstract

Flow distribution in electrostatic-fabric integrated precipitator is one of the most important factors for affecting collection efficiency. The standard

k-ε

turbulence model was used to simulate flow field distribution at five kinds of filtration velocity. The results show that obvious partition of flow velocity was observed

the high-speed zone was observed at the lower space of the electrostatic precipitator dust bag

the area was minimum when the filtration rate of speed was 1.6 m/min

at the same time

the filter bag narrow stream was observed at the gathering area

which the bag loading unevenness was increased. In the lower region of the bag dust

bag dust chamber area and net cross-sectional area representatives were tested. The unevenness was smallest at 0.8 m/min of filtration velocity

and areas were increasing with speed bag dust increases

but increases with height overall have shown a downward trend.

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references

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