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- W333448431 abstract "A fundamental investigation into the gasification of chars, which were prepared under similar conditions from 19 different coals of fuel ratio ranging from 1.2 (brown coal) to 7.9 (anthracite), was made thermogravimetrically at 850/sup 0/ C using steam (H/sub 2/O (24%) + N/sub 2/) and at 900/sup 0/ C using oxygen (O/sub 2/ (10%) + N/sub 2/). The fractional gasification f, based on the assumption that the rate constant k varied as the gasification progressed, was related to the time of gasification theta, thus being independent of the coalification rank, the gasification conditions, and the sigmoidal character of the f - theta curves. The average rate constant k, which was approximately equal to the value of k at f = 0.5), and the time of gasification theta necessary to reach the point at which f = 0.5 proved to be useful parameters for evalutating the gasification reactivities of chars, and were closely correlated with the fuel ratio of the coal and the atomic ratios H/C of the coal and/or char. The gasification-rate (f - theta) curves of the 19 coal chars were correlated by an equation." @default.
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- W333448431 date "1983-07-01" @default.
- W333448431 modified "2023-09-26" @default.
- W333448431 title "The development of rate expressions and the evaluation of reactivity for gasification of various coal chars with steam and oxygen" @default.
- W333448431 hasPublicationYear "1983" @default.
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