パルプ黒液を含むバイオブリケットのガス化反応速度解析

概要

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The objectives of this study are to evaluate the gasification reactivity of a mixture of coal/biomass using a thermogravimetry (TG) apparatus. The experiments have been performed with biobriquette containing pulp black liquor (0-15wt%). A char is initially formed by pyrolysis of the samples for an hour under helium gas stream at different temperatures (973-1373K), and subsequently gasified with an oxidizer (CO_2, H_2O) for another an hour at the same temperatures as in pyrolysis. The results show that; (1) The gasification reactions of the samples with CO_2 or H_2O are first-order with respect to the conversion of char, and the rates can be expressed by Arrhenius equation {k=A exp (-E/RT)}. Furthermore, the gasification at the lower concentrations (2-20vol%) of CO_2 obeys the Langmuir-Hinshelwood reaction mechanism. (2) The addition (5-15wt%) of pulp waste to biobriquette had a greater effect on increasing (2-3 times) the gasification rates. (3) This effect may be due to catalysis by alkaline metal (Na) involved in pulp waste.
一般社団法人日本エネルギー学会の論文
2006-05-20