生命周期评估
齿轮
环境科学
环境污染
煤
环境影响评价
天然气
废物管理
环境工程
环境保护
工程类
生产(经济)
计算机科学
经济
人工智能
宏观经济学
生物
生态学
作者
Ke Ren,Tianzuo Zhang,Yueyang Bai,Yijie Zhai,Yuke Jia,Xinying Zhou,Ziyue Cheng,Jinglan Hong
标识
DOI:10.1016/j.jclepro.2022.131668
摘要
The high-value utilization of coke oven gas (COG) has been widely investigated because of abundant resource shortage and serious environmental pollution . Comparative environmental and economic analysis of various COG utilization routes (i.e., COG-to-methanol, COG-to-hydrogen, and COG-to-synthetic natural gas) in China was conducted to identify the optimized route via China's regionalized life cycle assessment coupled economic assessment. Results showed that the COG-to-hydrogen route presents the lowest environmental and economic effects. Fossil depletion category was the main contributor for the three COG utilization scenarios, accounting for approximately 60% of the total environmental burden. Electricity dominated the environmental and economic burden with the proportion of approximately 90% and 30%, respectively. COG-based routes reduced the energy consumption by 83.4%–87.1% and carbon emissions by 41.4%–88.4% than coal-based routes. The recycling of unused COG for hydrogen production can substantially reduce the CO 2 emissions by 11.87, 4.94, 6.39, 7.48 and 4.70 million tons in the provinces of Shanxi, Hebei, Shandong, Shaanxi, and Inner Mongolia, respectively. “Green hydrogen” route relying on hydropower shows higher environmental superiority than other routes, whereas COG-to-hydrogen route is regarded as an important breakthrough for large-scale transformation and application of “green hydrogen”. Optimizing the industrial layout and vigorously promoting the recycling of COG by enterprises are conducive to increasing the environmental and economic benefits. • High-value utilization of coke oven gas is conducted via life cycle assessment. • Electricity contributed to 90% of environmental burden and 30% of economic burden. • Hydrogen production route is superior to methanol and synthetic natural gas routes. • Coke oven gas-based routes reduced CO 2 emissions by 41%–88% than coal routes. • Industrial layout optimization is conducive to increasing environmental benefits.
科研通智能强力驱动
Strongly Powered by AbleSci AI