Abstract: Carbon dioxide emission is tremendous in coal chemistry industry，so CO2 emission reduction from coal conversion should be paid attention to. In this paper，possible large-scale CO2 emission reduction methods and measures were presented after analyzing and researching coal gasification technology，chemical process optimization and integration. CO2 chemical utilization with respect to industrial application and scientific research were also summarized and analyzed. It was found that conversion of dimethyl carbonate to high added value chemicals，and the reaction of CO2-CH4 to high added value chemicals are significant processes in CO2 emission reduction for coal chemical industry.

摘要： 研究并分析了煤气化技术、工艺优化和工艺装置联合一体化减排二氧化碳的可能，提出了从工艺源头上实现二氧化碳规模化减排的途径和对策。对各种二氧化碳化学利用技术进行了介绍和分析，认为碳酸二甲酯转化利用技术、二氧化碳和甲烷共转化技术可实现二氧化碳的规模化化学利用，并得到附加值较高的化学品，因此，应高度关注相关技术的研发。