1989-09-01

Hydroprocessing of Direct Coal Liquefaction Product for Diesel Engine Fuel 892131

A contemporary coal liquefaction product from the Wilsonville pilot plant was processed to make two diesel test fuels for engine research. A naphtha fraction was separated by distillation, and the diesel fraction was upgraded by hydrogenation. Processing objective was to make two stable products with acceptable ignition quality. A trial run was made over a range of pressures and residence times to establish minimum severity to meet the objective. About 85 gallons of product was made at minimum severity and 81 gallons at slightly higher severity. The products resembled petroleum diesel fuels except for marginally high viscosity and low accelerated stability. Product characterizations included 30.1 and 35.4 cetane number.

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