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- W2393072045 abstract "The isothermal kinetics of coal char gasification with steam was studied in the so-called micro-fluidized bed reaction analyzer(MFBRA) under its minimized inhibition from heat and mass transfer.In the tested temperature range of 750 ~ 1 100 ℃,the shrinking core model described well the char steam gasification reaction in MFBRA,but the reaction behavior showed obvious difference in the temperature ranges of 750 ~ 950 ℃ and 950 ~ 1 100 ℃.The gasification was subject to full kinetic control at such lowtemperatures,which led to its maximal reaction rate to appear at the initial reaction stage and the activation energy in this temperature range was found to be about 172 kJ /mol.At the higher temperatures of 950 ~ 1 100 ℃,the reaction was subject to an evident inhibition of gas diffusion,which caused the maximal reaction rate at the conversion of about 0.15 and the activation energy of about 82 kJ /mol.The study also investigated the effect of steam partial pressure on char gasification behavior,and the average reaction order of steam partial pressure was found to be about 0.28.The kinetic rate expressions for the char-steam gasification were finally obtained for such lowand high temperature stages." @default.
- W2393072045 created "2016-06-24" @default.
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- W2393072045 date "2014-01-01" @default.
- W2393072045 modified "2023-09-28" @default.
- W2393072045 title "Char Gasification Kinetics in Micro Fluidized Bed Reaction Analyzer" @default.
- W2393072045 hasPublicationYear "2014" @default.
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