基于实测的烟气“消白”工程环境效益研究

doi:10.11930/j.issn.1004-9649.202004038

中国电力 ›› 2020, Vol. 53 ›› Issue (9): 202-207.DOI: 10.11930/j.issn.1004-9649.202004038

基于实测的烟气“消白”工程环境效益研究

张志强¹, 朱法华^1,2, 邹斯诣¹, 史鹏飞¹, 王晓玲¹, 游秦¹, 姚力¹, 闫绍帅¹, 王兴¹

1. 国电科学技术研究院有限公司，江苏南京 210023;
2. 国电环境保护研究院有限公司国家环境保护大气物理模拟与污染控制重点实验室，江苏南京 210031

收稿日期:2020-04-07 修回日期:2020-06-02 发布日期:2020-09-09
作者简介:张志强 (1979—)，男，高级工程师 (教授级)，从事电力环境保护技术研究，E-mail：12059642@chnenergy.com.cn;朱法华 (1966—)，男，通信作者，博士生导师，高级工程师(教授级)，从事电力环境保护科研工作，E-mail：zhufahua@vip.sina.com
基金资助:
国家自然科学基金资助项目(41771498，51508281)

Study on Environmental Benefits of Wet Plume Treatment Project Based on Actual Measurements

ZHANG Zhiqiang¹, ZHU Fahua^1,2, ZOU Siyi¹, SHI Pengfei¹, WANG Xiaoling¹, YOU Qin¹, YAO Li¹, YAN Shaoshuai¹, WANG Xing¹

1. Guodian Science and Technology Research Institute Co., Ltd., Nanjing 210023, China;
2. State Key Laboratory of Atmospheric Physics Simulation and Pollution Control for Environmental Protection, State Power Environmental Protection Research Institute Co., Ltd., Nanjing 210031, China

Received:2020-04-07 Revised:2020-06-02 Published:2020-09-09
Supported by:
This work is supported by National Natural Science Foundation of China (No.41771498，No.51508281)

摘要/Abstract

摘要： 为研究烟气“消白”工程的环境效益，采用RJ-SO₃-M型便携式SO₃分析仪对河北邯郸某电厂600 MW机组烟气“消白”工程进行了现场测试，收集了烟气“消白”工程实施前后相近运行负荷、相近煤质、相同时间段的烟尘、SO₂、NO_x的连续监测数据。研究结果表明，烟气“消白”工程中的冷却降温对FGD、WESP脱除SO₃的影响很小，烟气温降与FGD、WESP、FGD+WESP对SO₃的脱除效率之间没有相关性，温降为0 ℃、2.9 ℃、3.9 ℃和5.8 ℃的4种工况条件下，FGD+WESP对SO₃总的脱除效率介于75.6%~81.9%，平均为78.9%。烟气“消白”工程中，烟气降温有利于WESP对颗粒物的脱除，烟尘排放质量浓度约下降0.5 mg/m³，SO₂和NO_x排放浓度基本无变化。烟气中SO₃的脱除主要取决于FGD和WESP，而与烟气是否冷却降温基本无关。烟气冷却降温不是减少污染物排放的有效方法。

关键词: 烟气“消白”工程, 温降, SO₃, 常规污染物

Abstract: In order to evaluate the environmental benefits, onsite measurements were retrieved by using the RJ-SO₃-M portable SO₃ analyzer in the wet plume treatment project of a 600 MW power unit in Handan, Hebei Province. The monitoring data of dust, SO₂ and NO_x before and after the wet plume treatment project were continuously collected under the conditions of similar operating load, coal quality and time period of operations. The results show that the flue gas cooling has very limited effects on the removal of SO₃ by FGD and WESP. In addition, there is no correlation between flue gas temperature drop and SO₃ removal efficiency of FGD, WESP and FGD + WESP. The total removal efficiency of SO₃ by FGD + WESP is between 75.6% and 81.9%, with the average of 78.9% under the conditions of the temperature drop by 0 ℃, 2.9 ℃, 3.9 ℃ and 5.8 ℃ respectively. The temperature drop of flue gas in the wet plume treatment project is beneficial to the removal of particulate matter by WESP. For instance, the mass concentration of dust emission has decreased by 0.5 mg/m³, while the concentration of SO₂ and NO_x emission remains almost unchanged. The removal of SO₃ in flue gas mainly depends on FGD and WESP, but has almost nothing to do with whether the flue gas has been cooled down. Therefore cooling down the flue gas temperatures turns out not an effective way to reduce the emission of pollutants.

Key words: wet plume treatment project, temperature drop, SO₃, conventional pollutants

张志强, 朱法华, 邹斯诣, 史鹏飞, 王晓玲, 游秦, 姚力, 闫绍帅, 王兴. 基于实测的烟气“消白”工程环境效益研究[J]. 中国电力, 2020, 53(9): 202-207.

ZHANG Zhiqiang, ZHU Fahua, ZOU Siyi, SHI Pengfei, WANG Xiaoling, YOU Qin, YAO Li, YAN Shaoshuai, WANG Xing. Study on Environmental Benefits of Wet Plume Treatment Project Based on Actual Measurements[J]. Electric Power, 2020, 53(9): 202-207.

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基于实测的烟气“消白”工程环境效益研究

Study on Environmental Benefits of Wet Plume Treatment Project Based on Actual Measurements

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基于实测的烟气“消白”工程环境效益研究

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