公开(公告)号：US3754876A

公开(公告)日：1973-08-28

申请号：US3754876D

申请日：1971-12-10

Applicant: EXXON RESEARCH ENGINEERING CO

Inventor： HOCHMAN J ,  PENNINGTON R ,  VON ROSENBERG H

IPC: C10G1/00 ,  C10G1/02 ,  C10L9/00 ,  C10L5/00

CPC classification number: C10L9/00 ,  C10G1/00 ,  C10G1/02

Abstract: A process in which lumps of sub-bituminous or lower rank coal are heated to pyrolysis temperatures of up to about 1,000* F. by contact, preferably countercurrent, with an inert hydrogen-poor hydrocarbonaceous heat transfer fluid, preferably a coal-derived oil, thereby transforming the coal to a char product in lump form of upgraded calorific value, such product, moreover, being less pyrophoric than a char product produced by pyrolysis at the same temperatures in an inert gaseous (nitrogen) atmosphere.