Reactions of brown coals with COH2O in the presence of alkaline catalysts in a well-stirred autoclave with hot-charge facility

John S T Chan, W. Roy Jackson, Marc Marshall

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Abstract

Victorian brown coals were reacted with COH2O in the presence of different amounts of NaAlO2, NaOH, Na2CO3 and Ca(AlO2)2 in a well-stirred autoclave with a hot-charge facility. The effects of reaction time, temperature, stirrer speed, reactant gas composition, coal structure and reactant ratios were studied and the results were compared with those of reactions using a similar reactor in a less well-mixed system. Efficient mixing led to higher yields of liquid products, at lower water:coal ratios and lower promoter loadings. In addition, the product yields were less sensitive to coal structure in this well-mixed system.

Original languageEnglish
Pages (from-to)1628-1631
Number of pages4
JournalFuel
Volume73
Issue number10
DOIs
Publication statusPublished - 1 Jan 1994

Keywords

  • brown coal
  • carbon monoxide-water
  • liquefaction

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