Coal dry distillation device

摘要

Provided is a coal dry distillation device capable of producing dry-distilled coal (11) with low mercury content. This coal dry distillation device is provided with a dry distillation device main body (111) which is provided with an inner tube (112) to which the dry coal is supplied and an outer tube (113) which covers the inner tube, and which indirectly heats the dry coal in the inner tube by means of a heating gas (1) supplied to the outer tube and generates dry-distilled coal (12) and dry distillation gas (21). This coal dry distillation device is provided with a mercury adsorption suppressing means which suppresses adsorption of mercury contained in the dry distillation gas (21) into the dry-distilled coal, wherein the mercury adsorption suppressing means is an exhaust tube (101) which discharges a gas inside the inner tube. The gas inlet port (101a) of the exhaust tube (101) is arranged in a region (D1) between the substantially central portion (112a) in the longitudinal direction and the coal heating unit outlet (112c) in the inner tube (112).