Citation: LIU Tian-yu, WEN Chang, SHAO Yu-hao, LIU En-ze, PAN Zu-ming, CHEN Sheng, XU Ming-hou. Effects of multiple agglomeration technology on the removal of particulate matters and particulate heavy metals: A pilot study[J]. Journal of Fuel Chemistry and Technology, ;2020, 48(11): 1378-1385. shu

Effects of multiple agglomeration technology on the removal of particulate matters and particulate heavy metals: A pilot study

1.
School of Energy and Power Engineering, State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
2.
Wuhan Likang Energy Co. Ltd., Wuhan 430074, China

Corresponding author: WEN Chang, wenchang@hust.edu.cn
Received Date: 21 September 2020
Revised Date: 13 October 2020

Fund Project: Major Project of Technical Innovation of Hubei Province 2017ACA087The project was supported by the National Key R & D Program of China (2018YFB0605104) and Major Project of Technical Innovation of Hubei Province (2017ACA087)the National Key R & D Program of China 2018YFB0605104

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The emmision of particulate matters and heavy metals such as As, Se and Pb from coal combustion into the atmosphere would cause a serious environmental and human health hazard. Therefore, a multiple agglomeration based on the principle of turbulent coalescence and wall surface adsorption was developed to investigate the agglomeration effects on the removal of particulate matter and particulate heavy metals. Firstly, a numerical simulation method was adopted to comprehensively study the pressure loss, the velocity uniformity and the particle agglomeration effect, and a folded blade was selected for the multiple agglomeration device. Subsequently, a pilot study at a coal-fired plant on the particle agglomeration at different flue gas velocities was carried out. It is found that the agglomeration rate of PM₁ in the multiple agglomeration device is up to 32.84%. As the gas velocity is increased from 11.1 to 17.6 m/s, the agglomeration rate of PM_2.5 shows a certain decline, indicating that an increase in gas velocity would lead to a shorter residence time of particles and thus a decrease in agglomeration rate of particles. By comparing the concentration changes of As, Se and Pb in the particles before and after agglomeration, it is found that the agglomeration process can enhance the adsorption to gaseous heavy metals and also aggregate the nano-particles rich in heavy metals, thus resulting in an increase in the concentration of heavy metals in PM₁. The decrease of the absolute concentrations of As, Se and Pb in PM₁ after coalescence shows a cooperative removal effect in the multiple agglomeration device on the particulate matter and particulate heavy metals.
- multiple agglomeration,
- particulate matter,
- emission reduction,
- particulate heavy metal,
- flue gas velocity
1. [1]
  WEN C, YU D, WANG J, WU J, YAO H, XU M. Effect of the devolatilization process on PM₁₀ formation during oxy-fuel combustion of a typical bituminous coal[J]. Energy Fuels, 2014,28(9):5682-5689. doi: 10.1021/ef501264v
2. [2]
  WEN C, XU M, ZHOU K, YU D, ZHAN Z, MO X. The melting potential of various ash components generated from coal combustion: Indicated by the circularity of individual particles using CCSEM technology[J]. Fuel Process Technol, 2015,133:128-136. doi: 10.1016/j.fuproc.2015.01.012
3. [3]
  LI Zhen. Characterization of PM_2.5 emissions from conventional coal fired power plants during flue gas cleaning processes[D]. Beijing: Tsinghua University, 2017.
4. [4]
  YU D, XU M, YAO H, LIU X. Size distributions of major elements in residual ash particles from coal combustion[J]. Chin Sci Bull, 2009,54:958-964.
5. [5]
  WANG Chao, LIU Xiao-wei, XU Yi-shu, WU Jian-qun, WANG Jian-pei, XU Ming-hou, LIN Xian-min, LI Hai-shan, XIA Yong-jun. Distribution characteristics of minor and trace elements in fine particulate matters from a 660 MW coal-fired boiler[J]. CIESC J, 2013,8:2975-2981.
6. [6]
  XU Ming-hou, WANG Wen-yu, WEN Chang, YU Dun-xi, LIU Xiao-wei. Research development of precipitation technology to accomplish the ultra-low emission from coal-fired power plants[J]. Proc CSEE, 2019,39(22):6627-6640.
7. [7]
  XU F, LUO Z, BO W, ZHAO L, GAO X, FANG M, CEN K. Experimental investigation on charging characteristics and penetration efficiency of PM_2.5 emitted from coal combustion enhanced by positive corona pulsed ESP[J]. J Electrost, 2009,67(5):799-806. doi: 10.1016/j.elstat.2009.06.002
8. [8]
  HUANG Q, LI S, SHAO Y, ZHAO Y, YAO Q. Dynamic evolution of impaction and sticking behaviors of fly ash particle in pulverized coal combustion[J]. Proc Combust Inst, 2019,37(4):4419-4426. doi: 10.1016/j.proci.2018.06.035
9. [9]
  LIU Han-xiao, LI Jian-guo, YAO Yu-ping, GUO Feng, YU Shun-li, CHEN Zhao-mei. Research Progress on PM_2.5 turbulent flows and assembling method[J]. Chin Environ Prot Ind, 2013,4:27-30.
10. [10]
  ZHANG Peng-fei, MI Jian-chun, PAN Zu-ming. Influences of flue-gas velocity and device-element angle on fine particle amalgamation[J]. Proc CSEE, 2016,36(10):2714-2720.
11. [11]
  ZHANG Peng-fei, MI Jian-chun, PAN Zu-ming. Influences of elemental arrangement and particle concentration on fine particle amalgamation[J]. Proc CSEE, 2016,36(6):1625-1632.
12. [12]
  YANG Chen-hao. Numerical modelling and experimental investigation of agglomeration characteristics of fine particles in a turbulent agglomerator[D]. Changsha: Changsha University of Science & Technology, 2017.
13. [13]
  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. doi: 10.1016/j.fuel.2015.10.036
14. [14]
  CHEN Dong-lin, WU Kang, MI Jian-chun, TANG Bin, FENG Wei, HE Shan-jun. Experimental study of ultrafine particle agglomerator installed on a 300 MW PC-fired boiler[J]. Chin J Environ Eng, 2015,9(4):1926-1930.
15. [15]
  CHEN Dong-lin, YANG Chen-hao, WU Kang, LIU Jing. Influences of turbulent agglomeration of fine particles under flue gas parameters[J]. Chin J Environ Eng, 2017,11(9):5084-5090.
16. [16]
  XU Y, LIU X, ZHANG P, GUO J, HAN J, ZHOU Z, XU M. Role of chlorine in ultrafine particulate matter formation during the combustion of a blend of high-Cl coal and low-Cl coal[J]. Fuel, 2016,184:185-191. doi: 10.1016/j.fuel.2016.07.015
17. [17]
  WANG C, LIU X, LI D, SI J, ZHAO B, XU M. Measurement of particulate matter and trace elements from a coal-fired power plant with electrostatic precipitators equipped the low temperature economizer[J]. Proc. Combust. Inst., 2015,35(3):2793-2800. doi: 10.1016/j.proci.2014.07.004
18. [18]
  JOHNSON K L, KENDALL K, ROBERTS A D. Surface energy and the contact of elastic solids[C]. Proceedings of the Royal Society of London A Mathematical and Physical Sciences, 1971, 324(1558): 301-313.
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沈阳化工大学材料科学与工程学院沈阳 110142