Effects of flue gas components and operation performance of SCR system on formation of smoke plumes

ZHANG Jinsong; SUN Jie; ZHANG Fajie; WANG Lele

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Effects of flue gas components and operation performance of SCR system on formation of smoke plumes

更新时间：2025-09-28

- Effects of flue gas components and operation performance of SCR system on formation of smoke plumes
- Thermal Power Generation Vol. 46, Issue 12, Pages: 111-116(2017)
- 作者机构：
  
  1. 内蒙古岱海发电有限责任公司
  2. 西安热工研究院有限公司苏州分公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： X773
- Published：2017
- 稿件说明：
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ZHANG Jinsong, SUN Jie, ZHANG Fajie, et al. Effects of flue gas components and operation performance of SCR system on formation of smoke plumes[J]. Thermal power generation, 2017, 46(12): 111-116.
DOI：

ZHANG Jinsong, SUN Jie, ZHANG Fajie, et al. Effects of flue gas components and operation performance of SCR system on formation of smoke plumes[J]. Thermal power generation, 2017, 46(12): 111-116. DOI：

摘要

某电厂600 MW机组在完成环保改造后

烟囱排烟出现不透明烟羽现象。为此

对烟气成分以及对烟羽形成影响较大的选择性催化还原(SCR)脱硝系统特性进行了研究。结果表明:烟气中的SO_3体积分数会随着燃煤中硫分的增加而增加

且经过SCR脱硝系统后

烟气中SO_3体积分数显著提高

会诱发可见烟羽;SCR脱硝反应器出口的NO_x分布反映出流场的不均

其所造成的氨逃逸过大会增加可见烟羽产生的概率;SCR脱硝催化剂的磨损、失活等因素增加了可见烟羽出现的概率。该结论可为制定烟羽治理方案提供理论依据。

Abstract

The stack of a 600 MW power plant emitted opaque plumes after modification of the air pollution devices.To solve this problem

the flue gas components and the SCR system

which affect the opacity of the plumes most

were studied.The results show that

the concentration of SO_3 in the flue gas grew with the sulfur content in the coal

it increased significantly after the flue gas passed through the SCR denitration system

which induced visible plume.The distribution of NO_x at the SCR reactor outlet indicated the flow filed was uneven

which increased the ammonia slip and thus intensified the smoke plumes.The abrasion and inactivation of the SCR catalysts aggravated the plumes.By analyzing the factors of the plume formation

theoretical basis were provided for control of the plumes.

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