Rumei Li1,2, Yulong Yan  1, Lin Peng1, Yinghui Li1, Zhuocheng Liu1, Zhanchun Fan3, Huanfeng Li3, Yang Xu1,2, Cheng Wang1,2, Dongmei Hu1, Zhiyong Li4

1 MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
2 School for Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
3 Shanxi Ecological Environment Monitoring Center, Taiyuan 030027, China
4 School of Environmental Science and Engineering, North China Electric Power University, Baoding 07100, China


 

Received: April 11, 2020
Revised: June 11, 2020
Accepted: June 16, 2020

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


Download Citation: ||https://doi.org/10.4209/aaqr.2020.04.0145 


Cite this article:

Li, R., Yan, Y., Peng, L., Li, Y., Liu, Z., Fan, Z., Li, H., Xu, Y., Wang, C., Hu, D. and Li, Z. (2020). Segments-based Volatile Organic Compounds Emission Characteristics from Different Type Coking Plants in China. Aerosol Air Qual. Res. https://doi.org/10.4209/aaqr.2020.04.0145


HIGHLIGHTS 

  • Typical VOCs source profiles of major coking plants in China were established.
  • Segments-based VOCs source profiles during coking processes was different.
  • VOCs emission factors of non-recovery coking process was 96 g Mg1 coke.
  • VOCs from oven leaks in mechanical coking plant had a higher reactivity.
  • Phasing out non-recovery coking plant would help reducing VOCs emission.
 

ABSTRACT


The source profiles, emission factors, and chemical reactivity of volatile organic compounds (VOCs) were determined for different emission segments during regular plant operation of non-recovery and mechanical coking plants in Shanxi province, a typical coking plant centralized area in China. Ethylene, 1-butene, benzene, acetylene, and 2,2-dimethylbutane were the major components emitted from the stack flue gas of non-recovery coking segment, whereas styrene, benzene and ethylene were the most abundant components emitted from stack flue gas of mechanical coking segment. Regarding fugitive emissions, benzene, toluene, ethane, m-xylene, and ethylene were the most abundant species from coke oven leakage, whereas byproduct plant leaks in mechanical coking plant were predominantly benzene, propane, ethane, ethylene, n-pentane, n-butane, isobutene, 1-butene, toluene and propylene. VOCs emission factors of the stack flue gas were 96 g·Mg-1 coke and 0.4 g·Mg-1 coke for non-recovery and mechanical coking plants, respectively; thus, VOCs emissions from non-recovery coking plants are of greater concern. The ozone formation potential of stack flue gas in non-recovery coking plant was the highest (80.26 mg·m-3), followed by that of coke oven fugitive emissions in mechanical coking plants (7.22 mg·m-3); therefore, controlling these emissions would significantly reduce ozone conversion by VOCs from coking plants. In conclusion, replacing non-recovery coking plants with mechanical coking plants will help reduce the VOCs emissions and improve ambient air quality in China.


Keywords: Volatile organic compounds; Source profiles; Emission factors; Coking plant; Coking segments.



Aerosol Air Qual. Res. 20:-. https://doi.org/10.4209/aaqr.2020.04.0145 


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