关键词: 煤化工, 低碳经济, 共生耦合, 多联产, 碳排放强度

Abstract: Coal is an important fossil fuel with highest carbon content.Huge amount of CO₂ emission caused by the use of coal has attracted high attention.In this paper,a new concept which is directed by low-carbon economy was proposed for the development of coal chemical industry in China.According to the actual situation in China,it is necessary and inevitable to choose the processes that can be highly effective multi-product as well as can combine coal chemical industry with petrochemical or metallurgical industry for utilizing effectively coal at different level.Besides,in order to lessen the dependence of oil imports and reduce the carbon emission intensity per unit GDP,we should take efforts to produce high value-added products from coal chemical industry instead of petrochemical industry,such as alkenes,aromatics especially benzene,toluene and xylene,methane and acetylene.Therefore,it is important to launch deeper research on crucial processes and new techniques like molecular tailoring and directional conversion.

Key words: coal chemical industry, low-carbon economy, symbiosis and coupling, polygeneration, carbon emission intensity