Reactions of brown coals with COH2O in the presence of alkaline catalysts in a well-stirred autoclave with hot-charge facility

✍ Scribed by John S.T. Chan; W.Roy Jackson; Marc Marshall

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 460 KB
• Volume: 73
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(94)90142-2

✦ Synopsis

Victorian brown coals were reacted with CO-H,0 in the presence of different amounts of NaAiO,, NaOH, Na,CO, and Ca(AIO,), 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.