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97/00334 Effect of heat treatment temperature on coal char gasification reactivity


Publisher
Elsevier Science
Year
1997
Weight
202 KB
Volume
38
Category
Article
ISSN
0140-6701

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โœฆ Synopsis


Gaseous fuels (derived gaseous fuels)

proper monitoring of the main mixing gas stream, reporting its component analysis as well as calorific value, which can then be used for the control of the ratio of coke oven gas and blast furnace gas to optimize energy consumption and flue gas emission. 97100324 Catalytic hydrogenation of brown coals from Kansk-Achinsk (Russia) and Yallourn (Australia) basins to clean liquid fuels Kageyama, Y., Chem. Sustainable Dev., 1996, 4, (I). 37-44. This provides a comparative analysis of the prdperties of brown coals from the world largest brown coals basins-Kansk-Achinsk (Russia) and Yallourn (Australia) with respect to the production of alternative liquid hydrocarbon fuel. 97100325 Catalytic upgrading of tarry fuel gases: a kinetic study with model components Jess A., Chemical Engineering and Pmcessing, Dec. 1996, 35, (6) 487-494. As a contribution to the development of a process for catalytic upgrading of tarry fuel gases, e.g. coke-oven gas, the conversion of naphthalene, benzene and methane on a nickel catalyst in the presence of HZ and Hz0 was studied. The experiments were performed in a tubular flow reactor. The kinetic data were obtained by systematic variation of the reaction conditions. At temperatures of more than 800ยฐC. each hydrocarbon is cracked and converted with HZ0 to CO and HZ. Soot formation does not occur at any temperature. In case of simultaneous conversion of all three hydrocarbons, competitive reactions have to be considered. The rate of chemical reaction on the catalyst is substantially decreased in the presence of HzS. Nevertheless, in a reactor of industrial scale, HtS has only slight influence. The catalyst would be applied with a particle drameter of I9 mm (experiments: I.5 mm), and the overall reaction rate of hydrocarbon conversion is significantly affected by gas film diffusion.


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