Kinetic studies of steam gasification of char in the presence of H2, CO2 and CO |
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Authors: | Heinz-Jürgen Mühlen Karl Heinrich van Heek Harald Jüntgen |
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Affiliation: | Bergbau-Forschung GmbH, Abteilung Kohlechemie, Franz-Fischer-Weg 61, D-4300 Essen 13, FRG |
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Abstract: | Kinetic studies have been carried out to elucidate the mechanisms of steam and CO2 gasification of char and the interactions of these gasifying agents. The positive and negative influences of all product gases, excluding methane, were considered. An empirical approach was derived to describe the effects of the degree of carbon conversion on the reaction rate as a function of relevant test parameters (pressure range 1–70 bar, temperature 800–1000 °C). To assess the validity of the derived kinetic equation a model of a fluidized-bed gasifier is presented. |
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Keywords: | kinetics steam gasification char |
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