CO_2-H_2O-CO-H_2-N_2 系における高炉コークスのガス化速度

概要

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The gasification of coke by carbon dioxide or steam is one of the important reactions which take place in the blast furnace. But the rate equation, which may be applied to such an atmosphere of CO_2-H_2O-CO-H_2-N_2-mixture as in the blast furnace, has not been reported yet. In order to determine the rate equation applicable to such gas mixtures, the gasification rates of pulverized metallurgical coke (24∿35 mesh) by CO_2-N_2, CO_2-CO, H_2O-N_2 and H_2O-H_2 systems were measured between 1000 and 1100℃. The experimental results led to the following expression, (Rate of gasification)=(k_1p_<CO_2>+k_4p_<H_2O>)/(1+k_2p_<CO_2>+k_3p_<CO>+k_5p_<H_2O>) where P_<CO_2>, P_<H_2O> and P<CO> were the partial pressures of CO_2, H_2O and CO respectively, and the constants were functions of temperature. Some workers have reported the retardation of gasification reaction by CO and H_2, but hydrogen did not retard the reaction under our experimental conditions. The above equation may be available for the mathematical simulation of the blast furnace.
社団法人日本鉄鋼協会の論文
1968-12-01