Study on Hg Removal Characteristics of Fabric Filter

doi:10.12096/j.2096-4528.pgt.21028

Abstract

Abstract:

Fabric filter is an important industrial dust control equipment. Through the combination of mechanism analysis, measured data research and engineering measurement, the Hg removal performance of fabric filter was studied. The results show that the fabric filter can remove most of the particulate Hg while removing dust efficiently, and the removal efficiency is between 95% and 100%. Due to the differences in inlet gaseous Hg concentration and unburned carbon content of fly ash, the removal efficiency of gaseous Hg by fabric filter varies greatly, but some test data also reach more than 90%. The actual measurement of a 15 MW circulating fluidized bed (CFB) boiler fabric filter was studied, the removal efficiencies of gaseous Hg, particulate Hg and total Hg were found to be 82.14%, 99.88% and 98.44%, respectively, and the Hg balance coefficient of the system was 91.38%. The research results can provide some reference for subsequent Hg emission control of industrial flue gas.

Key words: coal-fired power plant, fabric filter, Hg removal, emission control, removal efficiency

CLC Number:

TK 09

Hanxiao LIU, Gaofei GUO. Study on Hg Removal Characteristics of Fabric Filter[J]. Power Generation Technology, 2023, 44(2): 193-200.

Figures/Tables 8

Fig. 1 Dust collect and removal principle of fabric filter

Fig. 2 Mechanism of Hg removal

Fig. 3 Hg removal performance of fabric filter in coal-fired power plant

Fig. 4 Hg removal performance of electrostatic fabric filter in coal-fired power plant

Fig. 5 Hg removal performance of fabric filter in cement plant

Fig. 6 Process flow diagram

Tab. 1 Test instruments

序号	仪器名称	型号	规格	厂家
1	大气压力表	Testo 622	—	—
2	烟尘采样仪	3012H	—	青岛崂应
3	等速采样管	—	5 m	青岛崂应
4	烟气测试仪	3022	—	青岛崂应
5	采样枪	—	加热120 ℃、除湿	M&C
6	电子天平	AE-100	0.01 mg	瑞士梅特勒
7	汞分析仪	RA-915F	—	鲁梅克斯
8	烟气汞综合采样器	ZR-3700A	—	青岛众瑞

Fig. 7 Hg removal performance of fabric filter

References 33

1	BRUNO J C C， RAFAEL S， VÁDILA G G，et al ．Hybrid air filters：a review of the main equipment configurations and results[J]．Process Safety and Environmental Protection，2020，2365：193-207． doi:10.1016/j.psep.2020.07.025
2	王玉红，姚群，陈志炜．我国袋式除尘行业技术新进展[J]．工业安全与环保，2020，46(6)：65-70． doi:10.3969/j.issn.1001-425X.2020.06.016
	WANG Y H， YAO Q， CHEN Z W ．New technology development of bag filters in China[J]．Industrial Safety and Environmental Protection，2020，46(6)：65-70． doi:10.3969/j.issn.1001-425X.2020.06.016
3	姚群，宋七棣，陈志炜．2019年袋式除尘行业发展评述及展望[J]．中国环保产业，2020，51(2)：19-22．
	YAO Q， SONG Q D， CHEN Z W ．Review and prospect of the development of bag-hose precipitation industry in 2019 new technology development of bag filters in China[J]．China’s Environmental Protection Industry，2020，51(2)：19-22．
4	郑青．袋式除尘技术发展回顾和展望[J]．水泥，2016(3)：45-48．
	ZHENG Q ．Review and prospect of bag dust removal technology[J]．Cement，2016(3)：45-48．
5	北京智研科信咨询有限公司．2018年中国除尘器应用结构、袋式除尘器及静电除尘器发展现状分析[EB/OL]．(2019-12-27)[2022-02-01]．. doi:10.1145/511446.511470
	Beijing Zhiyan Kexin Consulting Co.，Ltd. ．Analysis of application structure，bag dust collector and electrostatic precipitator development status in China in 2018[EB/OL]．(2019-12-27)[2022-02-01]．． doi:10.1145/511446.511470
6	王丹丹，钱付平，夏勇军，等．基于故障树分析法袋式除尘器滤袋失效的研究与应用[J]．环境工程学报，2016，10(6)：3118-3124． doi:10.12030/j.cjee.201501135
	WANG D D， QIAN F P， XIA Y J，et al ．Study and application of bags’ failure in bag filter using fault tree analysis method[J]．Chinese Journal of Environmental Engineering，2016，10(6)：3118-3124． doi:10.12030/j.cjee.201501135
7	陶晖，陶岚．袋式除尘技术在我国燃煤电厂的推广应用[J]．中国环保产业，2015，51(1)：15-21． doi:10.3969/j.issn.1006-5377.2015.01.003
	TAO H， TAO L ．Popularization and application of bag hose precipitating technology in China coal-fired power plant[J]．China’s Environmental Protection Industry，2015，51(1)：15-21． doi:10.3969/j.issn.1006-5377.2015.01.003
8	聂雪丽．基于含尘烟气超低排放用袋式除尘滤料织物构造特性研究及应用[D]．上海：东华大学，2018．
	NIE X L ．Research and application on characteristics of filter media with bag filter based on ultra low emission of dust-laden flue gas[D]．Shanghai：Donghua University，2018．
9	NIE X， SHEN H， WANG Y，et al ．Investigation of the pyrolysis behaviour of hybrid filter media for needle-punched nonwoven bag filters[J]．Applied Thermal Engineering，2017，113：705-713． doi:10.1016/j.applthermaleng.2016.11.045
10	刘美玲，沈敏超，刘含笑，等．高温除尘用金属纤维滤料的性能研究[J]．发电技术，2022，43(2)：362-366． doi:10.12096/j.2096-4528.pgt.19181
	LIU M L， SHEN M C， LIU H X，et al ．Study on the performance of metal fiber filter for high temperature dust removal[J]．Power Generation Technology，2022，43(2)：362-366． doi:10.12096/j.2096-4528.pgt.19181
11	陈招妹，刘含笑，崔盈，等．燃煤电厂烟气中Hg的生成、治理、测试及排放特征研究火电厂[J]．发电技术，2019，40(4)：355-361．
	CHEN Z M， LIU H X， CUI Y，et al ．Study on generation，treatment，testing and emission characteristics of Hg in flue gas of coal-fired power plants[J]．Power Generation Technology，2019，40(4)：355-361．
12	WANG S M， ZHANG Y S， GU Y Z，et al ．Using modified fly ash for mercury emissions control for coal-fired power plant applications in China[J]．Fuel，2016，181：1230-1237． doi:10.1016/j.fuel.2016.02.043
13	ZHANG Y S， SHANG P F， WANG J W，et al ．Trace element (Hg，As，Cr，Cd，Pb) distribution and speciation in coal-fired power plants[J]．Fuel，2017，208：647-654． doi:10.1016/j.fuel.2017.07.064
14	刘含笑，陈招妹，王伟忠，等．燃煤电厂烟气Hg排放特征及其吸附脱除技术研究进展[J]．环境工程，2019，37(8)：128-133．
	LIU H X， CHEN Z M， WANG W Z，et al ．Study on Hg emission characteristics and mercury adsorption removal technology of flue gas in coal-fired power plants[J]．Environmental Engineering，2019，37(8)：128-133．
15	ZHANG Y S， ZHANG Z S， ZHAO L，et al ．Study on the mercury captured by mechanochemical and bromide surface modification of coal fly ash[J]．Fuel，2017，200：427-434． doi:10.1016/j.fuel.2017.03.095
16	顾永正，王树民．改性燃煤飞灰吸附氧化脱汞机理研究进展[J]．化工进展，2017，36(11)：4257-4264．
	GU Y Z， WANG S M ．Research progress of mercury adsorption and oxidation mechanism on modified coal-fired fly ash[J]．Chemical Industry and Engineering Progress，2017，36(11)：4257-4264．
17	WU Q R， WANG S X， LI G L，et al ．Temporal trend and spatial distribution of speciated atmospheric mercury emissions in China during 1978-2014[J]． Environmental Science & Technology，2016，50：13428-13435． doi:10.1021/acs.est.6b04308
18	郑逸武，段钰锋，汤红健，等．燃煤烟气污染物控制装置协同脱汞特性研究[J]．中国环境科学，2018，38(3)：862-870． doi:10.3969/j.issn.1000-6923.2018.03.009
	ZHENG Y W， DUAN Y F， TANG H J，et al ．Characteristics of the existing air pollutant control devices on Hg synergistic removal in a coal-fired power plant[J]．China Environmental Sciences，2018，38(3)：862-870． doi:10.3969/j.issn.1000-6923.2018.03.009
19	GOODARZI F ．Characteristics and composition of fly ash from Canadian coal-fired power plants[J]．Fuel，2006，85(10/11)：1418-1427． doi:10.1016/j.fuel.2005.11.022
20	CHIEN P C， CHUN C， TIEN C C，et al ．Mercury speciation and mass distribution of coal-fired power plants in Taiwan using different air pollution control processes[J]．Journal of the Air & Waste Management Association，2020，158：1-35． doi:10.1080/10962247.2020.1860158
21	曹晓满，张军梅，汪远，等．不同超低排放技术路线的燃煤电站汞脱除研究[J]．环境科学与技术，2020，43(10)：194-199．
	CAO X M， ZHANG J M， WANG Y，et al ．Removing mercury from flue gas of coal-fired power plants by different ultra-low emission technical routes[J]．Environmental Science & Technology，2020，43(10)：194-199．
22	王运军，段钰锋，杨立国，等．燃煤电站布袋除尘器和静电除尘器脱汞性能比较[J]．燃料化学学报，2008，36(1)：23-29． doi:10.3969/j.issn.0253-2409.2008.01.005
	WANG Y J， DUAN Y F， YANG L G，et al ．Comparison of mercury removal characteristic between fabric filter and electrostatic precipitators of coal-fired power plants[J]．Journal of Fuel Chemistry and Technology，2008，36(1)：23-29． doi:10.3969/j.issn.0253-2409.2008.01.005
23	许月阳，薛建明，王宏亮，等．燃煤烟气常规污染物净化设施协同控制汞的研究[J]．中国电机工程学报，2014，34(23)：3924-3931．
	XU Y Y， XUE J M， WANG H L，et al ．Research on mercury collaborative control by conventional pollutants purification facilities of coal-fired power plants[J]．Proceedings of the CSEE，2014，34(23)：3924-3931．
24	陈奎续．基于实测的电袋复合除尘器脱除多污染物效果[J]．环境科学研究，2017，30(6)：937-942．
	CHEN K X ．Removal of multi-pollutants from coal-fired flue gas by electrostatic-fabric integrated precipitator based on field tests[J]．Research of Environmental Sciences，2017，30(6)：937-942．
25	陈磊．350 MW超低排放燃煤电厂汞排放特性试验研究[D]．南京：东南大学，2019． doi:10.1016/b978-0-08-102418-8.00005-x
	CHEN L ．Experimental study on mercury emission characteristics of 350 MW ultra-low emission coal-fired power plant[D]．Nanjing：Southeast University，2019． doi:10.1016/b978-0-08-102418-8.00005-x
26	于丽新，曲莹军，贾俊新，等．基于实测的燃煤电厂汞迁移转化规律研究分析[J]．环境科学与技术，2014，37(S2)：463-466．
	YU L X， QU Y J， JIA J X，et al ．Study and analysis of mercury migration and transformation from coal-fired power plants based on field tests[J]．Environmental Science & Technology，2014，37(S2)：463-466．
27	王小龙．水泥生产过程中汞的排放特征及减排潜力研究[D]．杭州：浙江大学，2017．
	WANG X L ．Study on mercury emission characteristics and emission reduction potential in cement production [D]．Hangzhou：Zhejiang University，2017．
28	王小龙，王小峰，周启昕，等．水泥生产线布袋除尘器和静电除尘器脱汞性能比较[J]．水泥，2018(4)：54-59．
	WANG X L， WANG X F， ZHOU Q X，et al ．Comparison of mercury removal performance between cloth bag dust collector and electrostatic dust collector in cement production line[J]．Cement，2018(4)：54-59．
29	LI Y， DANG L X， YANG H，et al ．Removal of elemental mercury in flue gas by Cu-Fe modified magnetosphere from coal combustion fly ash[J]．Fuel，2020，271：117668． doi:10.1016/j.fuel.2020.117668
30	王家伟，张永生，张翼，等．喷射点位及温度对超低排放电厂活性炭吸附脱汞的影响[J]．中国电机工程学报，2019，39(11)：3303-3311．
	WANG J W， ZHANG Y S， ZHANG Y，et al ．Effects of temperature and residence time on mercury control using activated carbon injection in ultra-low emission coal-fired power plant[J]．Proceedings of the CSEE，2019，39(11)：3303-3311．
31	李晓航，刘红刚，路建洲，等．煤粉炉和循环流化床锅炉飞灰吸附汞动力学及其吸附机制[J]．化工学报，2019，70(11)：4397-4409．
	LI X H， LIU H G， LU J Z，et al ．Kinetics and mechanism of mercury adsorption on fly ashes from pulverized coal boiler and circulating fluidized bed boiler[J]．CIESC Journal，2019，70(11)：4397-4409．
32	陈自祥，王儒威，孙若愚，等．淮南燃煤电厂汞分配、富集与释放通量[J]．环境化学，2018，37(2)：193-199． doi:10.7524/j.issn.0254-6108.2017072101
	CHEN Z X， WANG R W， SUN R Y，et al ．Distribution and enrichment of mercury in utility boiler of Huainan coal-fired power plant[J]．Environmental Chemistry，2018，37(2)：193-199． doi:10.7524/j.issn.0254-6108.2017072101
33	LIU X L， WANG S X， ZHANG L，et al ．Speciation of mercury in FGD gypsum and mercury emission during the wallboard production in China[J]．Fuel，2013，111(9)：621-627． doi:10.1016/j.fuel.2013.03.052

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