关键词: 煤, 干馏, 微波, 分级加工, 清洁化利用

Abstract: To replace petrochemical products，coal is processed into a clean，efficient energy. The conversion is an important strategy for solving the gap between petroleum supply and demand，realizing coal cleaning utilization and guaranteeing energy security. In this paper，the heating mechanism，typical features and advantages of microwave are described. Research progress of microwave pyrolysis technology for coal is reviewed. A new possible route for processing coal by grade and clean utilization is proposed. Compared to other pyrolysis technologies，microwave pyrolysis technology could produce better coal tar，which is more suitable for producing chemical products as well as gasoline and diesel fuel. Coal gas produced by microwave has higher purity and is rich in hydrogen and methane. Microwave pyrolysis technology could be integrated with electric power plant or steel works，which is favorable to high-efficiency utilization of resources. Combining microwave pyrolysis with existing petroleum refineries，could optimize processing and utilization of products.

Key words: coal, pyrolysis, microwave, processing coal by grade, cleaning utilization