Cheng Long, Ye Zhilan, Wei Wei, Wang Kai, Wang Ruipeng, Yang Lu, Cheng Shuiyuan, Zhang Chengzhou
School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies and National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China.
College of Environmental & Energy Engineering, Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China.
Sci Total Environ. 2024 Nov 15;951:175183. doi: 10.1016/j.scitotenv.2024.175183. Epub 2024 Jul 31.
Coking industry is usually regarded as a high pollution and high energy consumption industry. China is accelerating its efforts to reduce pollution and carbon emissions in the industrial sector, which has received little attention as the world's largest producer of coke. Therefore, in this study, the trend of air pollution and carbon emissions in China's coking industry and the path of coordinated emission reduction were studied. The results indicate that the average annual emissions of PM, SO, NOx, VOCs, and CO in China's coking industry from 2012 to 2022 amount to 205.98, 69.47, 193.45, 599.80 Gg and 191.10 Tg, respectively. The main sources of PM, SO, NOx, VOCs and CO in coking industry were coal preparation (51.5 %), charge and pushing (39.5 %), coke oven gas (99.8 %), byproduct recovery (47.0 %) and fuel combustion (87.5 %). The emissions from coking plants in central and southern Shanxi, eastern and southern Hebei, and central Shandong are the most concentrated. Ultra-low emission transformation and deep treatment of VOCs have greatly reduced pollutant emissions in key areas of air pollutant control, but the actual emission reduction effect of these measures has been weakened by the additional emissions caused by the increase of coke production in other non-key areas. The research on synergetic emission reduction path shows that there is a great synergistic benefit between air pollutants and CO emission reduction in coking industry. It is estimated that the APeq (air pollutants and carbon equivalent) of China's coking industry in 2025, 2028 and 2030 will decrease by 38.2 %, 63.5 % and 70.8 % respectively compared with 2022. With the continuous promotion of pollution reduction and carbon reduction measures, the emission reduction potential of China's coking industry will gradually shift from key areas to non-key areas.
焦化行业通常被视为高污染、高能耗行业。中国正在加快工业领域的污染和碳排放减排工作，而作为全球最大的焦炭生产国，这一领域此前很少受到关注。因此，本研究对焦化行业的空气污染和碳排放趋势以及协同减排路径进行了研究。结果表明，2012年至2022年，中国焦化行业PM、SO、NOx、VOCs和CO的年均排放量分别达205.98Gg、69.47Gg、193.45Gg、599.80Gg和191.10Tg。焦化行业PM、SO、NOx、VOCs和CO的主要排放源分别为洗煤（51.5%）、装煤和推焦（39.5%）、焦炉煤气（99.8%）、副产品回收（47.0%）和燃料燃烧（87.5%）。山西中南部、河北东部和南部以及山东中部的焦化厂排放最为集中。VOCs的超低排放改造和深度治理极大地减少了大气污染物控制重点区域的污染物排放，但这些措施的实际减排效果因其他非重点区域焦炭产量增加导致的额外排放而被削弱。协同减排路径研究表明，焦化行业空气污染物减排与CO减排之间存在很大的协同效益。据估计，与2022年相比，2025年、2028年和2030年中国焦化行业的APeq（空气污染物和碳当量）将分别下降38.2%、63.5%和70.8%。随着污染减排和碳减排措施的持续推进，中国焦化行业的减排潜力将逐渐从重点区域向非重点区域转移。
