首页|Technical alternatives for coke oven gas utilization in China:A comparative analysis of environment-economic-strategic perspectives
Technical alternatives for coke oven gas utilization in China:A comparative analysis of environment-economic-strategic perspectives
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China is the largest coke producer and consumer.There is a pressing need to address the high emissions of air pollutants and carbon dioxide associated with traditional coking production.As the nation pursues a transition towards carbon neutrality,expanding supply chains for coking plants to produce hydrogen,methanol,and other green alternatives has garnered significant attention.However,the relative ad-vantages of these strategies have remained uncertain.In this study,we integrate a life cycle assessment-economic analysis-scenario analysis model to evaluate various coke oven gas(COG)utilization routes(COGtM:COG-to-methanol,COGtLNG:COG-to-liquefied natural gas,COGtSA:COG-to-synthetic ammonia,and COGtH:COG-to-hydrogen).The results indicate that COGtSA emerges as the preferred option for balancing environmental and economic benefits.Meanwhile,COGtM demonstrates economic viability but is associated with higher environmental impacts.Despite being recognized as a significant strategic direction under carbon neutrality initiatives,COGtH faces economic feasibility and risk resil-ience limitations.COGtLNG encounters both financial and environmental challenges,necessitating strategic development from an energy security perspective.The projected coking capacity is anticipated to experience a slight increase in the mid-term yet a significant decline in the long term,influenced by steel production capacity.In potential future markets,COGtM is estimated to potentially capture a maximum market share of 16-34％in the methanol market.Furthermore,against the backdrop of continuously expanding potential demand for hydrogen,COGtH holds advantages as a transitional so-lution,but in the long run,it can only meet a small portion of the market.COGtSA can meet 7-14％of market demand and emerges as the most viable pathway from the viewpoint of balancing environmental and economic aspects and covering future markets.
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