Research on the green and low-carbon development path for integrating thecoal chemical industry with new energy

ZHAO Yang; ZHANG Ning; LIU Jincun; ZHAO Chunyang; SUO Ting; WEI Yufei

Abstract：The acceleration of the energy transition and energy security are driven by current geopolitical conflicts,and climate and environmental challenges.Given China's energy resource endowment characterized by"abundance in coal,scarcity in oil,and deficiency in gas",along with a high dependency on fossil fuels with coal as the mainstay,it is great significance for the green and low-carbon development of China's energy sector and the timely achievement of the"dual carbon"goals that to promote the new energy industry primarily focused on photovoltaic and wind power generation and the modem coal chemistry industry as a breakthrough ofthe coal clean and efficient conversion,and the multi-energy coupling of these two industries.On the basis of analyzing the current development status,characteristics,and"dual carbon"emission reduction issues faced by China's coal chemical industry,we analyzed the coupling potential of modern coal chemical industry chains with new energy green hydrogen and green electricity through carbon reduction through green hydrogen substitution at the source,and carbon emission reduction through green electricity substitution in the process.The calculation results indicate that the green hydrogen substitutable volume in the coal-to-methanol,oil,olefins,and ethylene glycol industrial chains accounts for 55％of the total hydrogen demand,while the proportion of green hydrogen substitution for coal-to-natural gas is as high as 70％.Moreover,sensitivity analysis reveals that the carbon emission reduction volumes due to green hydrogen and green electricity substitution vary among different coal chemical industry chains.Based on the current policy orientation of the coal chemical industry and the development trend of green and low-carbon substitution technologies,taking a specific industrial chain and production capacity of a coal chemical park in Xinjiang as an example,green hydrogen and green electricity substitution calculations were conducted.The results showed that after 20％green hydrogen substitution and 50％green electricity substitution,the carbon emissions of the coal chemical park were reduced by about one-third.