Research progress and development history of coal pyrolysis
In response to the challenge of carbon neutrality,scholars in China have proposed the emerging discipline of"Engineering Thermochemistry".Coal pyrolysis is an important industrial thermochemical reaction,which is an important research content in the field of engineering thermochemistry.In the face of increasing energy demand and deteriorating world environment,the clean and efficient utilization of coal has become a major strategic need in China.A comprehensive understanding of the coal pyrolysis process,improvement of coal pyrolysis theory and accurate description of the kinetic mechanism of coal pyrolysis are the basis for the development of efficient pyrolysis of coal.This paper firstly introduced the concept,classification and pyrolysis process of coal pyrolysis,and then summarized the research progress of coal pyrolysis mechanism,and conducted a detailed analysis of the ReaxFF MD molecular dynamics as well as thermal analysis kinetics of coal pyrolysis.The main reactions occurring in the pyrolysis process,the influencing factors of the reactions,and the effects of the reactions of minerals and heteroatoms in the process of thermal action were described.Finally,the development history and demonstration application of coal pyrolysis process were summarized.
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