Generalized Kinetic Model of Catalyzed Hydroliquefaction of Coal Incorporating Tetralin Dehydrogenation Reaction

Ajit K. Ghosh, G. N. Prasad, T. Sridhar

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Abstract

A three-component kinetic model previously reported for uncatalyzed liquefaction has been used to simulate hydroliquefaction of Victorian brown coal with three different types of catalysts: iron-tin, iron, and haematite. The presence of catalyst is found to enhance hydrogenation of coal as well as the equilibrium hydrogenation-dehydrogenation reactions involving donor solvent. The thermal dissolution and autohydrogenation reaction rates are independent of catalyst used. Iron-tin-based catalyst has been found to be most effective for the hydrogenation reaction step. The simulation shows that the reactions producing hydrogen from tetralin are much slower than the coal-hydrogen reactions; hence, efforts aimed at efficient abstraction of hydrogen from the hydrogen donors may be beneficial.

Original languageEnglish
Pages (from-to)1825-1831
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume26
Issue number9
DOIs
Publication statusPublished - 1 Sep 1987

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