脱硫塔除雾器安装高度对烟气携液量影响的模拟研究

张双平; 陈伟雄; 贾西部; 袁园

doi:10.12096/j.2096-4528.pgt.20039

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脱硫塔除雾器安装高度对烟气携液量影响的模拟研究

发电及环境保护 | 更新时间：2025-07-04

- 脱硫塔除雾器安装高度对烟气携液量影响的模拟研究
- Simulation Study on Influence of Installation Height of Mist Eliminator on Liquid Holdup of Flue Gas in Desulfurization Tower
- 发电技术 2021年42卷第2期页码：247-253
- 作者机构：
  
  1.大唐西北电力试验研究院, 陕西省西安市 710021
  2.动力工程多相流国家重点实验室(西安交通大学), 陕西省西安市 710049
- 作者简介：
  
  [ "张双平(1991), 男, 工程师, 主要从事燃煤发电机组污染物生成及治理研究, 2309038586@qq.com" ]
  陈伟雄(1985), 男, 博士, 副教授, 主要研究方向为汽液两相流、强化传热和热力系统节能, 本文通信作者, chenweixiong@mail.xjtu.edu.cn
  [ "贾西部(1982), 男, 工程师, 主要从事燃煤烟气环保、脱硫废水零排放研究, JXB_fengqiang1018@163.com" ]
  [ "袁园(1983), 男, 高级工程师, 主要从事燃煤电厂污染物综合治理研究, 25100106@qq.com" ]
- 基金信息：
  
  国家重点研发计划项目(2018YFB0604303)
- DOI：10.12096/j.2096-4528.pgt.20039
  中图分类号： TK09
- 收稿：2020-06-09，
  
  纸质出版：2021-04-30
- 稿件说明：
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张双平, 陈伟雄, 贾西部, 等. 脱硫塔除雾器安装高度对烟气携液量影响的模拟研究[J]. 发电技术, 2021,42(2):247-253.

Shuangping ZHANG, Weixiong CHEN, Xibu JIA, et al. Simulation Study on Influence of Installation Height of Mist Eliminator on Liquid Holdup of Flue Gas in Desulfurization Tower[J]. Power Generation Technology, 2021, 42(2): 247-253.
张双平, 陈伟雄, 贾西部, 等. 脱硫塔除雾器安装高度对烟气携液量影响的模拟研究[J]. 发电技术, 2021,42(2):247-253. DOI： 10.12096/j.2096-4528.pgt.20039.

Shuangping ZHANG, Weixiong CHEN, Xibu JIA, et al. Simulation Study on Influence of Installation Height of Mist Eliminator on Liquid Holdup of Flue Gas in Desulfurization Tower[J]. Power Generation Technology, 2021, 42(2): 247-253. DOI： 10.12096/j.2096-4528.pgt.20039.

摘要

某电厂运行过程中存在周期性的除雾器阻力上升和结垢现象，造成除雾器局部坍塌。为解决这一问题，通过数值模拟方法对脱硫塔内部气液两相流场进行模拟，研究除雾器距离喷淋层高度（2.0~3.5 m）和喷淋雾化粒径（1500~2500 μm）等因素下，除雾器最下沿烟气携带喷淋液滴的情况。计算结果表明：随着除雾器距离喷淋层高度的增加，脱硫塔内部流场更趋均匀化，喷淋液滴到达除雾器的质量浓度相应降低。通过数值模拟得出了量化数据，从而为存在除雾器堵塞坍塌等类似现象的国内燃煤电厂提供诊断思路和优化依据。

Abstract

During the operation of a power plant

there is a periodic phenomenon of mist eliminator resistance rising and scaling

which results in the partial collapse of the mist eliminator. In order to solve this problem

the gas-liquid two-phase flow field in the desulfurization tower was simulated by numerical simulation method

and the condition of flue gas carrying spray droplets at the bottom of the mist eliminator was further studied

as affected by the varying heights (2.0-3.5m) from the top spray layer center to the bottom and the different misting drop sizes (1500-2500μm) of the particular nozzles. The results show that with the increase of the distance from the mist eliminator to the spray layer

the mass concentration of spray drops decreases

and the flow field inside the desulphurization tower becomes more uniform. The quantitative data were obtained by numerical simulation

which can provide a diagnostic thought and optimization basis for domestic coal-fired power plants with similar phenomena such as mist eliminator blocking and collapsing.

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