Zhu zibin and Ma Zhihua Lin Shiying, Mitsuho Hirato and(.East China University of Science and Technology, Yoshihiko NinomiyaShanghai 200237) (Tokyo University of Agriculture and Industry, et al. CHARACTERISTICS OF COAL CHAR GASIFICATION AT HIGH TEMPERATURE (Ⅰ) THE EFFECT OF ASH FUSION ON COAL CHAR GASIFICATION[J]. CIESC Journal, 1994, (2).
Zhu zibin and Ma Zhihua Lin Shiying, Mitsuho Hirato and(.East China University of Science and Technology, Yoshihiko NinomiyaShanghai 200237) (Tokyo University of Agriculture and Industry, et al. CHARACTERISTICS OF COAL CHAR GASIFICATION AT HIGH TEMPERATURE (Ⅰ) THE EFFECT OF ASH FUSION ON COAL CHAR GASIFICATION[J]. CIESC Journal, 1994, (2).DOI:
Coal char gasification with CO2 was studied in the 900-1500℃ temperature range of ash fusion under normal pressure. It was found that the activation energy changed with the gasification process. Except for the initial stage of reaction
gasification was affected seriously by internal diffusion. There was a characteristic temperature in coal char gasification at a high temperature
where the gasification rate was significantly reduced in the intermediate and final stages of reaction. Its effect covered about 200-300℃ around the characteristic temperature
its value was related to many factors
such as the kind of coal
the properties of ash etc.
generally lower than the ash softening temperature.