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Low temperature—long time, high temperature-short time liquefaction of coal: The Hokudai process

✍ Scribed by Masataka Makabe; Koji Ouchi

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
430 KB
Volume
64
Category
Article
ISSN
0016-2361

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✦ Synopsis

A Japanese cola was hydrogenated in wash oil with tine iron dust and sulphur as catalyst under a reaction pressure of 12-13 MPa at 420°C for 2 h and then at 500°C for CL20 min. The liquid yield boiling up to 600°C amounted to 55-66 wt%. Pyridine conversion was z 100 wt%, benzene conversion 82-90 wt% and n-hexane conversion 53-70 wt%. Compared with direct hydrogenation at 500°C for 10 min the low temperature-long time plus high temperature-short time liquefaction process (the Hokudai process) is a very effective method for obtaining high liquid yield under relatively low hydrogen pressure without coking, using disposable catalyst and non-donor solvent.

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