26.石炭チャーの水蒸気およびCO_2による高温ガス化反応速度解析

概要

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Three coal chars were gasified with carbon dioxide or steam using a Pressurized Drop Tube Furnace (PDTF) or thermogravimetry (TGA) at high temperature to simulate the inside of an air-blown two-stage entrained flow coal gasifier, and the kinetics of gasification reaction was analyzed up to 1500℃. Prepared chars, made by rapid pyrolysis of pulverized coals using a DTF, had about 40μm of average particle size. As a result, the gasification rate of each char was controlled by pore diffusion above about 1200℃ or 1300℃, and it was made clear that the gasification rate had a large difference between coal types at pore diffusion zone the same as at reaction control zone.
一般社団法人日本エネルギー学会の論文
2002-10-29