Journal of the Japan Institute of Energy
Online ISSN : 1882-6121
Print ISSN : 0916-8753
ISSN-L : 0916-8753
Estimation of Properties of Narrow Boiling Range Coal-Derived Liquids from the 150ton/day NEDOL Coal Liquefaction Pilot Plant
Hirohito ISHIBASHIMinoru ONEYAMATakashi HAYASHIMasatoshi KOBAYASHIJun-ichiro HAYASHIHironori ITOHTadatoshi CHIBA
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2002 Volume 81 Issue 9 Pages 854-863


Properties of coal-derived liquids were investigated for proper scaleup design of the NEDOL demonstration plant (DP) from the 150t/d capacity pilot plant (PP). Empirical and semi-empirical equations to estimate intrinsic, thermodynamic and transport properties were formulated on the basis of observed results in PP operation together with existing investigations for characterization of narrow boiling-point range distillates obtained by superfractionation. It was shown that the properties of coal-derived liquids in PP differ from those in 1t/d process supporting unit (PSU), the coal-derived liquids from which have a different composition of aromatic and paraffin compounds. It was also suggested that, for design of industrial coal liquefaction process, it is necessary to obtain engineering data under conditions where the process recycling liquids have attained equilibrium in the process after a sufficiently long term run.

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