煤在等离子体中热解直接生产乙炔

煤在富氢热等离子体中热解直接制取乙炔，是一条具有潜在工业发展前景的新工艺路线。最近发表的该技术的技术经济评价报告表明：等离子体热解煤直接制乙炔的生产成本与传统的水解电石法的乙炔成本基本相同，但新技术对环境没有污染，新技术的经济可行性在很大程度上取决于乙炔的最大收率及单位体积乙块的能耗，而这两个指标又由工艺条件（等离子体发生器和煤热解反应器的结构及氢气源成本等）和煤的性质决定。本文对国外在这一领域的工作进行了全面的评述，并扼要介绍了我们自己的研究工作。

Pyrolysis of Coal sunder Plasma Conditions to Produce Acetylene Directly

Acetylene has been a basic material for the chemical industry for some decades. Pyrolysis of coal in hydrogen-enriched plasma opens up a direct means of producing this important primary substance,which may become attractive as a new commercial process in the future. The technical and economic evaluation of the new process revealed that the production cost of acetylene derived from coal pyrolysis in plasma is comparative to that of acetylene produced conventionally via hydrolysis of calcium carbide,The economic feasibility of the new technique depends to a large extent. on the maximum yield Of acetylene and onthe specific energy requirement. These factors are. in turn, functions both of operational conditions(i.e.,the parameters of plasma generator and coal pyrolysisreactor.etc)and the properties of the coal used. The present paper summarizes past work carried out abroad in the field of coal pyrolysis in plasma and introduces briefly our own work in the same field.