MEASURING APPARATUS OF AIR-FLOW RESISTANCE OF COAL SOFTENED/FUSED LAYER AND MEASURING METHOD OF AIR-FLOW RESISTANCE

摘要

PROBLEM TO BE SOLVED: To provide a measuring apparatus and a measuring method of air-flow resistance in a coal softened/fused layer which can estimate and evaluate the expansion pressure in a shorter measuring time compared with a large moving wall type dry distillation furnace and with precision comparable to or higher than the same dry distillation furnace.;SOLUTION: The apparatus is equipped with an outer tube having a coal sample room installed in the center inside of the longitudinal direction of the apparatus main body, a pair of upper-lower side mesh plates arranged in the upper and lower sides of the coal sample room of the outer tube, a pair of upper-lower side mesh plate fixing tubes that push a pair of the mesh plates from the upper part and the lower part in the outer tube to fix them, and a gas introducing port and a gas exhausting port that are for passing the gas into the coal sample room. The apparatus is also constituted by a pair of upper-lower side caps which, while sealing the edge parts of the upper and lower side outer tubes and the edge parts of the mesh plate fixing tubes through packings, serve to fix them from the periphery of the outer tube. The diameter of the coal sample room is ≤13 mm, and the pore diameter of the mesh plates is ≤0.3 mm.;COPYRIGHT: (C)2009,JPO&INPIT