China′s energy resource endowment and the development of coal gasification industry have made the emission of coal gasificationslag up to 60 million t/ a. A large amount of coal gasification slag is not in line with the concept of clean, low-carbon and efficient use ofenergy. In the process of coal gasification slag absorption treatment, due to the high water content and carbon content, the way of largescale utilization is limited, so it is a trend to change the traditional idea and develop the performance in the direction of high value. Research progress of high-value gasification slag was focused on, the sources and physical and chemical properties of coal gasification slagand the research status at home and abroad in the high-value gasification of catalyst framework was summarized, polymer reinforcement,porous materials, agricultural compost and other aspects. The limitations of high-value utilization was put forward, and the future development direction was looked forward. High-value utilization of coal gasification slag is the main form of solid waste performance development, which can reduce production costs and environmental pollution. Moreover, the characteristics of coal gasification slag showthat coal gasification slag is a misplaced resource, and moderate development of its application in high-value utilization can realize thetransformation of waste into treasure.

冯向港(1997—),男,河南周口人,硕士研究生。E-mail:feng702520@163.com

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FENG Xianggang,WANG Haiyan,GE Fenfei,et al.Research progress and application prospect of high-value utilizationof coal gasification slag[J].Clean Coal Technology,2023,29(11):122-132.