Promoting fine particle removal in double-tower cascade wet flue gas desulfurization system by flue gas temperature reduction

被引：20
作者：
Wang, Qianwen [1 ]
Wang, Leilei [1 ]
Wu, Hao [1 ,2 ]
Yang, Hongmin [1 ]
机构：
[1] Nanjing Normal Univ, Sch Energy & Mech Engn, Nanjing 210042, Peoples R China
[2] Southeast Univ, Key Lab Energy Thermal Convers & Control, Minist Educ, Nanjing 210096, Peoples R China
来源：
POWDER TECHNOLOGY | 2020年 / 373卷
关键词：
Fine particles; Heterogeneous water vapor condensation; Wet flue gas desulfurization; FIRED POWER-PLANT; HETEROGENEOUS CONDENSATION; SUBMICRON PARTICLES; DROPLET GROWTH; HUMAN HEALTH; AGGLOMERATION; SEPARATION; EMISSIONS; POLLUTION; IMPACT;
D O I：
10.1016/j.powtec.2020.07.019
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The emission of fine particles from coal-fired power plants could cause many environmental issues. To promote the fine particle removal in coal-fired flue gas, a process involving a double-tower cascade wet flue gas desulfurization system based on heterogeneous water vapor condensation via flue gas temperature reduction between two desulfurization towers is proposed. In the established supersaturated water vapor environment, fine particles could develop into lager condensational-droplets, and then be efficiently removed in the subsequent secondary tower. The results of numerical analysis for this proposed process indicated that it was feasible under most scenarios, and the experimental results showed that the removal efficiency of fine particles in all size ranges could be promoted. Furthermore, the effects of some key operating parameters were also studied, and the results indicated that the total removal efficiency would be promoted by 15-20% and the fine particle emission could be reduced by 30-40% in most cases. (C) 2020 Elsevier B.V. All rights reserved.
引用
收藏
页码：581 / 589
页数：9
相关论文
共 36 条
[1]   Experimental study of fine particles removal in the desulfurated scrubbed flue gas [J].
Bao Jingjing ;
Yang Linjun ;
Yan Jinpei ;
Xiong Guilong ;
Lu Bin ;
Xin Chengyun .
FUEL, 2013, 108 :73-79
[2]   Separation of Fine Particles from Gases in Wet Flue Gas Desulfurization System Using a Cascade of Double Towers [J].
Bao, Jingjing ;
Yang, Linjun ;
Song, Shijuan ;
Xiong, Guilong .
ENERGY & FUELS, 2012, 26 (04) :2090-2097
[3]   A 1-D model of spraying performance for wet flue gas desulfurization scrubber based on predicted slurry temperature [J].
Chen, Baokui ;
Sun, Fengzhong ;
Gao, Ming ;
Shi, Yuetao .
APPLIED THERMAL ENGINEERING, 2019, 155 :259-266
[4]   Effects of simultaneous acoustic and electric fields on removal of fine particles emitted from coal combustion [J].
Chen, Hao ;
Luo, Zhongyang ;
Jiang, Jianping ;
Zhou, Dong ;
Lu, Mengshi ;
Fang, Mengxiang ;
Cen, Kefa .
POWDER TECHNOLOGY, 2015, 281 :12-19
[5]   Fine particles and human health - a review of epidemiological studies [J].
Englert, N .
TOXICOLOGY LETTERS, 2004, 149 (1-3) :235-242
[6]   Experimental investigation on removal of coal-fired fine particles by a condensation scrubber [J].
Fan, Fengxian ;
Yang, Linjun ;
Yan, Jinpei ;
Bao, Jingjing ;
Shen, Xianglin .
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 2009, 48 (08) :1353-1360
[7]   SIZE EFFECT IN HETEROGENEOUS NUCLEATION [J].
FLETCHER, NH .
JOURNAL OF CHEMICAL PHYSICS, 1958, 29 (03) :572-576
[8]   The impact of power generation emissions on ambient PM2.5 pollution and human health in China and India [J].
Gao, Meng ;
Beig, Gufran ;
Song, Shaojie ;
Zhang, Hongliang ;
Hu, Jianlin ;
Ying, Qi ;
Liang, Fengchao ;
Liu, Yang ;
Wang, Haikun ;
Lu, Xiao ;
Zhu, Tong ;
Carmichael, Gregory R. ;
Nielsen, Chris P. ;
McElroy, Michael B. .
ENVIRONMENT INTERNATIONAL, 2018, 121 :250-259
[9]  
HEIDENREICH S, 1995, J AEROSOL SCI, V26, P335, DOI 10.1016/0021-8502(94)00111-B
[10]   CONDENSATIONAL DROPLET GROWTH AS A PRECONDITIONING TECHNIQUE FOR THE SEPARATION OF SUBMICRON PARTICLES FROM GASES [J].
HEIDENREICH, S ;
EBERT, F .
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 1995, 34 (03) :235-244
1234