| Title: | Quantitation study on VOC emissions and their reduction potential for coking industry in China: Based on in-situ measurements on treated and untreated plants |
| Author(s): | Cheng L; Wei W; Zhang C; Xu X; Sha K; Meng Q; Jiang Y; Cheng S; |
| Address: | "College of Environmental & Energy Engineering, Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China. College of Environmental & Energy Engineering, Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China. Electronic address: weiwei@bjut.edu.cn. Appraisal Center for Environment and Engineering, Ministry of Ecology and Environment, Beijing 100012, China. Sinosteel Anshan Research Institute of Thermo-energy Co., Ltd, Anshan 114044, China" |
| DOI: | 10.1016/j.scitotenv.2022.155466 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "Currently, the characteristics of volatile organic compounds (VOC) released from coking industry are still vague, and the widely used VOC emission factors (EFs) were still from the measurements of 1990s. Hence, focusing on coking industry, we conducted an in-situ measurement campaign in several typical plants, developed a set of VOC EFs for various release units, and estimated the current emission amounts and future reduction potentials of VOC in China. The measurements show that the levels of VOC in stationary units were 63.82-9563.93 mug.m(-3), and those surrounding fugitive units were 111.37-1436.36 mug.m(-3). VOC emissions from stationary units were directly calculated, which deducing EFs of 11.57, 15.51, 127.13, 0.28, 0.16 g.t(-1) coke respectively for coke charging, coke pushing, coke oven chimney, dry quenching, and wastewater treatment processes. Meanwhile, VOC emissions from fugitive units were simulated following the inverse dispersion method, which achieving EFs of 443.34 +/- 66.31, 352.12 +/- 65.81, and 718.56 +/- 132.69 g.t(-1) coke respectively for the coke oven leakage, byproduct recovery with VOC treatment system, and byproduct recovery without VOC treatment system. Generally, the coking plants installing VOC treatment system had total VOC EF of 953.76 g.t(-1) coke, about 37.1% lower than those never considering VOC treatment (1516.25 g.t(-1) coke). According to these developed EFs, the VOC emission amount from coking industry in China were estimated, slightly decreasing from 623.54 to 578.17 Gg per year, although the coke production increasing from 410.86 to 418.26 Tg during 2015-2019. In future, according to the national industrial policies, regulations and standards, technical guidelines, the VOC reduction potential of this industry in China could reach 336.9 Gg, to which headstream adjustment, process improvement, and end-of-pipe control contributed about 21.4%, 31.6%, and 47.0%, respectively" |
| Keywords: | *Air Pollutants/analysis China *Coke/analysis Environmental Monitoring/methods Industry *Volatile Organic Compounds/analysis Coking industry Emission factors Emission reduction potential Volatile organic compounds; |
| Notes: | "MedlineCheng, Long Wei, Wei Zhang, Chengzhou Xu, Xiuli Sha, Kechang Meng, Qingbo Jiang, Yu Cheng, Shuiyuan eng Netherlands 2022/04/27 Sci Total Environ. 2022 Aug 25; 836:155466. doi: 10.1016/j.scitotenv.2022.155466. Epub 2022 Apr 25" |
