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Study on the promotion of particle heterogeneous condensation by different charging approaches. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.118144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Shao L, Liu C, Wang Y, Yang Z, Wu Z, Xu F, Zhang Y, Ni Y, Zheng C, Gao X. Preventing Aerosol Emissions in a CO 2 Capture System: Combining Aerosol Formation Inhibition and Wet Electrostatic Precipitation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:16167-16177. [PMID: 36253722 DOI: 10.1021/acs.est.2c04181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Aerosol emission from the CO2 capture system has raised great concern for causing solvent loss and serious environmental issues. Here, we propose a comprehensive method for reducing aerosol emissions in a CO2 capture system under the synergy of aerosol formation inhibition and wet electrostatic precipitation. The gas-solvent temperature difference plays a vital role in aerosol formation, with aerosol emissions of 740.80 mg/m3 at 50 K and 119.36 mg/m3 at 0 K. Different effects of SO2 and SO3 on aerosol formation are also found in this research; the aerosol mass concentration could reach 2341.25 mg/m3 at 20 ppm SO3 and 681.01 mg/m3 at 50 ppm SO2 with different aerosol size distributions. After the CO2 capture process, an aerosol removal efficiency of 98% can be realized by electrostatic precipitation under different CO2 concentrations. Due to the high concentration of aerosols and aerosol space charge generated by SO2 and SO3, the removal performance of the wet electrostatic precipitator decreases, resulting in a high aerosol emission concentration (up to 130.26 mg/m3). Thus, a heat exchanger is installed before the electrostatic precipitation section to enhance aerosol growth and increase aerosol removal efficiency. Under the synergy of aerosol formation inhibition and electrostatic precipitation, an aerosol removal efficiency of 99% and emission concentrations lower than 5 mg/m3 are achieved, contributing to global warming mitigation and environmental protection.
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Affiliation(s)
- Lingyu Shao
- State Key Lab of Clean Energy Utilization, State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control, Zhejiang University, 38 Zheda Road, Hangzhou310027, P. R. China
| | - Chang Liu
- State Key Lab of Clean Energy Utilization, State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control, Zhejiang University, 38 Zheda Road, Hangzhou310027, P. R. China
| | - Yifan Wang
- State Key Lab of Clean Energy Utilization, State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control, Zhejiang University, 38 Zheda Road, Hangzhou310027, P. R. China
| | - Zhengda Yang
- College New Energy, China University of Petroleum East China, Qingdao266580, P. R. China
| | - Zhicheng Wu
- State Key Lab of Clean Energy Utilization, State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control, Zhejiang University, 38 Zheda Road, Hangzhou310027, P. R. China
| | - Feng Xu
- State Key Lab of Clean Energy Utilization, State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control, Zhejiang University, 38 Zheda Road, Hangzhou310027, P. R. China
| | - You Zhang
- State Key Lab of Clean Energy Utilization, State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control, Zhejiang University, 38 Zheda Road, Hangzhou310027, P. R. China
| | - Yu Ni
- China Power Engineering Consulting Group Co., Ltd., Beijing100120, P. R. China
| | - Chenghang Zheng
- State Key Lab of Clean Energy Utilization, State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control, Zhejiang University, 38 Zheda Road, Hangzhou310027, P. R. China
- Jiaxing Research Institute, Zhejiang University, Jiaxing314000, P. R. China
| | - Xiang Gao
- State Key Lab of Clean Energy Utilization, State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control, Zhejiang University, 38 Zheda Road, Hangzhou310027, P. R. China
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Zhang Y, Yu G, Jin R, Zhang Y, Dong K, Cheng T, Wang B. Water vapor distribution and particle condensation growth in turbulent pipe flow. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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