Device for destructive distillation of coal

摘要

　Provided is a device for the destructive distillation of coal, said device suppressing increases in the concentration of mercury within destructively distilled coal generated by the device. The device for the destructive distillation of coal is a rotary kiln in which an inner cylinder (102) is rotatably supported inside an outer cylinder (103), thermal gas (11) is supplied to the interior of the outer cylinder and dried coal (1) is supplied to the interior of the inner cylinder from one end side thereof, the dried coal is subjected to thermal destructive distillation whilst being moved and agitated from the one end side of the inner cylinder to the other end side thereof due to the inner cylinder being rotated, and destructively distilled coal (2) and destructively distilled gas (12) are delivered from the other end side of the inner cylinder. The device includes: a chute (104) that is provided continuously from the other end side of the inner cylinder and discharges the destructively distilled coal; an exhaust line (106) that is provided continuously from the chute and discharges the destructively distilled gas; and a gas flow adjustment device (110) that is provided to the chute and adjusts the flow of the destructively distilled gas discharged towards the exhaust line (106).