METHOD FOR PRODUCING CAKING ADDITIVE FOR COKE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a new and suitable caking additive for coke from a steam coal having low caking property. SOLUTION: Noncaking steam coal is mixed with a hydrogenated heavy solvent, introduced into a tubular reactor 10 and quickly heated. The heated coal is subjected to pyrolytic hydrogenation reaction in a tank reactor 12. The reaction product is introduced into a vacuum distillation column 18 through a flash drum 16 and the caking additive is extracted from the bottom of the vacuum distillation column 18. The vacuum heavy oil fractionated by the vacuum distillation column 18 is introduced into a solvent hydrogenation reaction column 20, hydrogenated with hydrogen and circulated as a hydrogenated heavy solvent. The caking additive is mixed with charged coal by a mixer 24 and charged to a coke oven 14. COPYRIGHT: (C)2007,JPO&INPIT