燃煤电厂污染控制设备脱汞效果及汞排放特性试验

doi:10.11930/j.issn.1004-9649.2017.04.162.05

中国电力 ›› 2017, Vol. 50 ›› Issue (4): 162-166.DOI: 10.11930/j.issn.1004-9649.2017.04.162.05

燃煤电厂污染控制设备脱汞效果及汞排放特性试验

刘发圣, 夏永俊, 徐锐, 吴英, 王潜, 桂良明

国网江西省电力科学研究院,江西南昌 330096

收稿日期:2016-12-28 出版日期:2017-04-20 发布日期:2017-04-13
作者简介:刘发圣（1983-）,男,江西宜春人,硕士,高级工程师,从事煤的清洁燃烧、电站锅炉的优化运行及节能环保研究工作。E-mail: shengfaliu@163.com
基金资助:
江西省科技创新团队建设基金项目（20133BCB24013）

Experimental Study on Mercury Removal Effect and Mercury Emission Characteristics of Pollution Control Equipment in Coal-Fired Power Plants

LIU Fasheng, XIA Yongjun, XU Rui, WU Ying, WANG Qian, GUI Liangming

State Grid Jiangxi Electric Power Research Institute, Nanchang 330096, China

Received:2016-12-28 Online:2017-04-20 Published:2017-04-13
Supported by:
This work is supported by Technology Innovation Team Construction Foundation Project of Jiangxi Province (No. 20133BCB24013).

摘要/Abstract

摘要： 为了解燃煤电厂汞的排放规律以及现有的污染控制设备对烟气中汞的协同脱除效果,采用安大略法对江西省内4台机组进行汞排放及控制试验研究,得到现阶段燃煤电厂配置条件下汞的排放特性。研究结果表明：未投入汞氧化剂的机组污染控制设备协同脱汞效率在69.01%~75.63%,投入汞氧化剂的机组脱汞效率可达89.69%;SCR脱硝装置对烟气总汞的减排效果不明显,但能促使Hg⁰成为易于脱除的Hg²⁺和颗粒态汞,机组投入汞氧化剂后可大幅提高Hg⁰氧化为Hg²⁺的比率;除尘器可以脱除全部的颗粒态汞,其协同脱汞效率平均值为24.37%;湿式脱硫系统对Hg²⁺的脱除效率为88.39%;烟气经过脱硝、除尘、湿式脱硫装置后,最终排放气体中汞的质量浓度在3.91~8.89 μg/m³,远小于国家排放标准限值。

关键词: 燃煤电厂, 汞排放, 烟气脱硝, 除尘, 湿法脱硫, 汞氧化剂

Abstract: In order to better understand the mechanism of mercury emission from coal-fired power plants and the effects of existing pollution control equipment on synergistic mercury removal, the test study on the mercury emission from four thermal power units in Jiangxi Province is carried out by using Ontario Hydro Method, thus the current mercury emission characteristics of power plants are obtained. The results show that the mercury removal efficiency of the units without mercury oxidant is between 69.01% and 75.63%, while that with mercury oxidant can reach as high as 89.69%. The SCR denitration does not seem to take significant impact on total mercury reduction. However it can promote the oxidation of Hg⁰ to Hg²⁺ and Hg_p. The oxidation ratio of Hg⁰ to Hg²⁺ can be increased drastically with the mercury oxidants being put into use. The electro-static precipitator(ESP) can remove almost all Hg_p, and its average total synergistic mercury removal efficiency is 24.37%. The removal efficiency of Hg²⁺ by wet flue gas desulphurization (WFGD) is 88.39%. After processed through SCR, ESP and WFGD, the mass concentration of mercury in the exhaust gas is limited within the range between 3.91 and 8.89 μg/m³, which is far below what is specified in the national emission standard.

Key words: coal-fired power plant, mercury emission, SCR denitration, dust removal, WFGD, mercury oxidant

中图分类号:

TM621

刘发圣, 夏永俊, 徐锐, 吴英, 王潜, 桂良明. 燃煤电厂污染控制设备脱汞效果及汞排放特性试验[J]. 中国电力, 2017, 50(4): 162-166.

LIU Fasheng, XIA Yongjun, XU Rui, WU Ying, WANG Qian, GUI Liangming. Experimental Study on Mercury Removal Effect and Mercury Emission Characteristics of Pollution Control Equipment in Coal-Fired Power Plants[J]. Electric Power, 2017, 50(4): 162-166.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2017.04.162.05

https://www.electricpower.com.cn/CN/Y2017/V50/I4/162

参考文献

[1] Report on global atmospheric mercury assessment: sources,emissions and transport [R]. Geneva: UNEP, 2009.
[2] 许月阳,薛建明,王宏亮,等. 火电厂汞污染控制对策探讨[J].中国电力,2013,46（3）：91-94,103.
XU Yueyang, XUE Jianming, WANG Hongliang, et al . Discussion on mercury pollution control strategy for thermal power plants [J].Electric Power, 2013, 46(3): 91-94, 103.
[3] 张静怡.燃煤电站烟气中汞脱除与减排技术[J]. 中国电力,2012,45（9）：76-79.
ZHANG Jingyi. Technology of mercury removal and reduction for flue gas of coal-fired power plants [J]. Electric Power, 2012, 45(9): 76-79.
[4] 火电厂大气污染物排放标准：GB 13223—2011[S]. 2011.
[5] 王起超,沈文国,麻壮伟. 中国燃煤汞排放量估算[J]. 中国环境科学,1999,19（4）：318-321.
WANG Qichao, SHEN Wenguo, MA Zhuangwei. The estimation of mercury emission from coal combustion in China[J]. China Environmental Science, 1999, 19(4): 318-321.
[6] 赵毅,薛方明,王涵,等. “十二五”期间中国燃煤电厂汞排放量估算[J]. 中国电力,2014,47（2）：135-139.
ZHAO Yi, XUE Fangming, WANG Han, et al . Estimation of mercury emissions from coal-fired power plants in China during the 12th Five-Year period [J]. Electric Power, 2014, 47(2): 135-139.
[7] 王相凤,邓双,刘宇,等. 燃煤烟气安大略汞测试方法的实验研究[J]. 环境工程,2013,31（2）：126-131.
WANG Xiangfeng, DENG Shuang, LIU Yu, et al . Experimental study on ontario-hydro test method for mercury in flue gas generated from coal-combustion[J]. Environmental Engineering, 2013, 31(2): 126-131.
[8] 丁承刚,马琼云,徐小明,等. 燃煤电厂烟气汞在线监测比较研究[J]. 锅炉技术,2015,46（5）：15-19.
DING Chenggang, MA Qiongyun, XU Xiaoming, et al . Reseach on compare of flue gas mercury online monitoring in coal fired power phant [J]. Boiler Technology, 2015, 46(5): 15-19.

[1]	刘东旭, 张潇元, 马青, 冯前伟, 杜振. 燃煤机组SO₃生成与控制技术路线分析[J]. 中国电力, 2024, 57(6): 235-242.
[2]	刘毅. 燃煤电厂烟气中SO₃排放控制中试研究[J]. 中国电力, 2022, 55(7): 201-208.
[3]	刘含笑, 吴黎明, 赵琳, 于立元, 郦建国, 崔盈. 燃煤电厂湿式电除尘器减排及能效特性研究[J]. 中国电力, 2022, 55(5): 196-203.
[4]	孙尊强, 郑成航, 周灿, 王圣, 马修元, 叶毅科. 燃煤电厂典型除尘器运行现状分析及优化[J]. 中国电力, 2022, 55(11): 194-201.
[5]	刘志坦, 姚杰, 庄柯, 喻乐蒙, 周凯. 燃气轮机与燃煤机组SCR脱硝催化剂特性比较[J]. 中国电力, 2021, 54(6): 145-152.
[6]	杜振, 王志东, 江建平, 朱跃. 湿法脱硫系统PM_2.5排放特性分析[J]. 中国电力, 2021, 54(6): 153-158.
[7]	吴家玉, 莫华, 胡耘, 朱杰, 帅伟, 张晴, 姜岸. 京津冀及周边地区燃煤电厂煤场无组织颗粒物不同控制情景下时空变化特征[J]. 中国电力, 2021, 54(2): 182-189.
[8]	刘玺璞, 李东阳, 张超. 多种负荷工况下湿式电除尘器的PM_2.5脱除效率及排放特征[J]. 中国电力, 2021, 54(1): 182-187.
[9]	赵宏, 张发捷, 马云龙, 马宝林, 唐潇, 徐仁博, 罗通达, 李成宝, 任传明, 于洁, 孙路石. 燃煤电厂SCR脱硝氨逃逸迁移规律试验研究[J]. 中国电力, 2021, 54(1): 196-202.
[10]	赵柄, 王海刚, 胡冬, 陈坤洋, 金绪良, 殷爱鸣. 燃煤电厂碱性吸附剂脱汞性能研究[J]. 中国电力, 2020, 53(9): 208-213.
[11]	贾西部. 石灰石-石膏湿法脱硫废水排放量深度解析[J]. 中国电力, 2020, 53(8): 139-144,163.
[12]	王卫群, 张磊, 黄治军, 傅高健, 李国奇. 基于CFD模拟计算的SCR脱硝系统喷氨优化试验方法[J]. 中国电力, 2020, 53(6): 185-190.
[13]	姚燕, 马云龙, 杨晓宁, 张华东, 王丽朋. 高砷煤SCR脱硝催化剂中毒失活研究[J]. 中国电力, 2020, 53(6): 191-196.
[14]	马学礼, 孙希进, 苏燊燊, 张仁锋, 党立晨, 黄显昌, 谢永平. 基于超低排放的燃煤电厂烟囱高度优化研究[J]. 中国电力, 2020, 53(5): 179-184.
[15]	徐静馨, 朱法华, 王圣, 张明, 赵秀勇, 孙雪丽, 胡耘, 田文鑫. 超低排放燃煤电厂和燃气电厂综合对比[J]. 中国电力, 2020, 53(2): 164-172,179.

燃煤电厂污染控制设备脱汞效果及汞排放特性试验

Experimental Study on Mercury Removal Effect and Mercury Emission Characteristics of Pollution Control Equipment in Coal-Fired Power Plants

RichHTML

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

模态框（Modal）标题

燃煤电厂污染控制设备脱汞效果及汞排放特性试验

Experimental Study on Mercury Removal Effect and Mercury Emission Characteristics of Pollution Control Equipment in Coal-Fired Power Plants

RichHTML

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics