Study on Coking Mechanism during the Pyrolysis of Coal to Acetylene in the Plasma

Based on characterization of various properties of coking formation during the processing of pyrolysis of coal to acetylene in the plasma, and the chemical group composition of the coal, the reaction central - border zone characteristics of plasma and the specific circumstances of the reactor, the mechanism of coking on reactor wall is put forword during pyrolysis of the coal to acetylene in the plasma, which aromatics, colloids, asphaltenes and carbenes happen condensation reaction by dehydrogenation in plasma border reaction zone. Besides, a method is proposed that double peak particle size distribution of coal particle can eliminate coking continuously, and it get experimental validation.