湍流与化学团聚耦合促进燃煤细颗粒物的清除

于洋; 孙德帅; 颜培玲; 申贤坤

doi:10.12030/j.cjee.201704003

环境工程学报

湍流与化学团聚耦合促进燃煤细颗粒物的清除

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于洋, 孙德帅, 颜培玲, 申贤坤. 湍流与化学团聚耦合促进燃煤细颗粒物的清除[J]. 环境工程学报, 2017, 11(11): 5949-5955. doi: 10.12030/j.cjee.201704003

引用本文:

于洋, 孙德帅, 颜培玲, 申贤坤. 湍流与化学团聚耦合促进燃煤细颗粒物的清除[J]. 环境工程学报, 2017, 11(11): 5949-5955. doi: 10.12030/j.cjee.201704003

YU Yang, SUN Deshuai, YAN Peiling, SHEN Xiankun. Removal of fine particles with coupling of turbulent and chemical agglomeration[J]. Chinese Journal of Environmental Engineering, 2017, 11(11): 5949-5955. doi: 10.12030/j.cjee.201704003

Citation:

YU Yang, SUN Deshuai, YAN Peiling, SHEN Xiankun. Removal of fine particles with coupling of turbulent and chemical agglomeration[J]. Chinese Journal of Environmental Engineering, 2017, 11(11): 5949-5955. doi: 10.12030/j.cjee.201704003

湍流与化学团聚耦合促进燃煤细颗粒物的清除

1.
青岛大学化学化工学院, 青岛 266071
基金项目:
国家自然科学基金资助项目（21206080）

山东省重点研发项目（2015GSF117026）
中图分类号: X513

Removal of fine particles with coupling of turbulent and chemical agglomeration

1.
College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
Fund Project:

摘要: 燃煤飞灰中的细颗粒物对人体和环境的危害很大，传统静电除尘器对细颗粒物的清除效率很低。在团聚室内设置湍流器件，改变颗粒的运动，同时喷入化学团聚剂进一步促进细颗粒物长大而清除。研究发现湍流团聚装置中涡片结构影响颗粒的流动，斜涡片比十字形涡片性能更优越；安装扰流柱后更有利于提高颗粒的数量清除效率。团聚室内颗粒浓度为3 g·m-3时，颗粒团聚清除效率最佳。在湍流与化学团聚耦合作用后，颗粒总质量清除率能达到53.6%，总数量清除率达到68.9%，但化学团聚剂对质量清除率的作用更为明显。
- 燃煤飞灰 /
- 湍流团聚 /
- 化学团聚 /
- 耦合 /
- 涡片
Abstract: Fine particles of fly ash are hazardous to people's health and environment. The removal efficiency of fine particles by traditional electrostatic precipitator is very low. In this paper, turbulent devices were set up in the agglomeration chamber to change the flow of particles. As same time, chemical agglomeration agent was introduced to improve the agglomeration of fine particles. The experiments found that the structures of vortex sheet affected the flow of particles. The effect of oblique vortex sheet is superior to that of the cruciform vortex;The pin fin in turbulent agglomeration could improve the number removal efficiency of fine particles. The maximum removal appeared as the particles concentration was 3 g·m-3. When the chemical agglomeration agent was introduced into the turbulent agglomeration chamber, the total mass removal rate of fine particles could reach 53.6% and the total number removal was 68.9%. The results showed the chemical agent could be benefit to the total mass removal of fine particles.
- fired-coal fly ash /
- turbulent agglomeration /
- chemical agglomeration /
- coupling /
- vortex

[1]	GUO Q, YANG Z, ZHANG J. Influence of a combined external field on the agglomeration of inhalable particles from a coal combustion plant[J]. Power Technology, 2012, 227:67-73
[2]	王光旭,徐国栋,刘文婧, 等. 应用电声换能超声波雾化方法提高超细颗粒捕集效率[J]. 环境工程学报, 2013,7(1):294-300
[3]	YANG L, CHENG S, WANG X, et al. Source identification and health impact of PM_2.5, in a heavily polluted urban atmosphere in China[J]. Atmospheric Environment, 2013, 75(4):265-269
[4]	ZHU J, ZHANG X, CHEN W, et al.Electrostatic precipitation of fine particles with a bipolar recharger[J]. Journal of Electrostatics, 2010, 68(2):174-178
[5]	熊桂龙,李水清,陈晟,等.增强PM_2.5 脱除的新型电除尘技术的发展[J].中国电机工程学报,2015,35(9):2217-2223
[6]	陈隆枢. 袋式除尘技术对PM_2.5控制的探讨[J]. 中国环保产业,2013(7):21-27
[7]	颜金培,陈立奇,杨林军, 等. 声波与相变联合作用下细颗粒脱出的实验研究[J]. 中国电机工程学报,2014, 34(20):3282-3288
[8]	魏凤, 张军营, 王春梅, 等. 煤燃烧超细颗粒物团聚促进技术的研究进展[J]. 煤炭转化, 2003, 26(3):27-31
[9]	赵永椿, 张军营, 魏凤, 等. 燃煤超细颗粒物团聚促进机制的实验研究[J]. 化工学报, 2007, 58(11):2876-2881
[10]	孙德帅,郭庆杰,司崇殿.气体射流作用下燃煤可吸入颗粒的团聚[J]. 过程工程学报, 2009, 9(3):437-440
[11]	杨振楠,郭庆杰. 气固射流作用下可吸入燃煤飞灰颗粒的团聚[J]. 高校化学工程学报, 2011, 25(2):225-230
[12]	刘忠,刘含笑,冯新新,等. 湍流聚并器流场和颗粒运动轨迹模拟[J]. 中国电机工程学报, 2012, 32(14):71-75
[13]	刘忠,刘含笑,冯新新,等. 超细颗粒物聚并模型的比较研究[J]. 燃烧科学与技术, 2012, 18(3):212-216
[14]	刘勇,赵汶,杨林军,等. 化学团聚促进电除尘脱除PM_2.5的实验研究[J]. 化工学报, 2014, 65(9):3611-3616
[15]	胡斌,刘勇,杨春敏, 等. 化学团聚促进电除尘脱除烟气中PM_2.5和SO₃[J]. 化工学报, 2016, 67(9):3902-3909
[16]	章澄昌,周文贤. 大气气溶胶教程[M].北京:气象出版社,1995
[17]	章鹏飞,米建春,潘祖明. 烟气流速和装置元件角度对细颗粒湍流聚并的影响[J]. 中国电机工程学报, 2016, 36(10):2714-2720
[18]	CHEN D, WU K, MI J. Experimental investigation of aerodynamic agglomeration of fine ash particles from a 330 MW PC-fired boiler[J]. Fuel, 2016, 165:86-93
[19]	李云飞. 燃煤烟气细颗粒物湍流团聚的研究[D].哈尔滨:哈尔滨工业大学,2014
[20]	陈冬林,吴康,米建春,等. 300 MW燃煤锅炉机组超细颗粒聚并器的实验研究[J]. 环境工程学报, 2015, 9(4):1926-1930
[21]	孙德帅. 声场与射流耦合作用下燃煤可吸入颗粒团聚研究[D].青岛:青岛科技大学,2009
[22]	李海龙,张军营,赵永椿,等. 火力发电厂燃煤飞灰润湿性能[J]. 化工学报, 2009, 60(3):744-749

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湍流与化学团聚耦合促进燃煤细颗粒物的清除

1. 青岛大学化学化工学院, 青岛 266071

收稿日期: 2017-06-09

基金项目:

国家自然科学基金资助项目（21206080）

山东省重点研发项目（2015GSF117026）

关键词:

摘要: 燃煤飞灰中的细颗粒物对人体和环境的危害很大，传统静电除尘器对细颗粒物的清除效率很低。在团聚室内设置湍流器件，改变颗粒的运动，同时喷入化学团聚剂进一步促进细颗粒物长大而清除。研究发现湍流团聚装置中涡片结构影响颗粒的流动，斜涡片比十字形涡片性能更优越；安装扰流柱后更有利于提高颗粒的数量清除效率。团聚室内颗粒浓度为3 g·m-3时，颗粒团聚清除效率最佳。在湍流与化学团聚耦合作用后，颗粒总质量清除率能达到53.6%，总数量清除率达到68.9%，但化学团聚剂对质量清除率的作用更为明显。

English Abstract

Removal of fine particles with coupling of turbulent and chemical agglomeration

1. College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China

Received Date: 2017-06-09

Fund Project:

Keywords:

Abstract: Fine particles of fly ash are hazardous to people's health and environment. The removal efficiency of fine particles by traditional electrostatic precipitator is very low. In this paper, turbulent devices were set up in the agglomeration chamber to change the flow of particles. As same time, chemical agglomeration agent was introduced to improve the agglomeration of fine particles. The experiments found that the structures of vortex sheet affected the flow of particles. The effect of oblique vortex sheet is superior to that of the cruciform vortex;The pin fin in turbulent agglomeration could improve the number removal efficiency of fine particles. The maximum removal appeared as the particles concentration was 3 g·m-3. When the chemical agglomeration agent was introduced into the turbulent agglomeration chamber, the total mass removal rate of fine particles could reach 53.6% and the total number removal was 68.9%. The results showed the chemical agent could be benefit to the total mass removal of fine particles.

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湍流与化学团聚耦合促进燃煤细颗粒物的清除

Removal of fine particles with coupling of turbulent and chemical agglomeration

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湍流与化学团聚耦合促进燃煤细颗粒物的清除

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Removal of fine particles with coupling of turbulent and chemical agglomeration

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