Direct coal liquefaction process and system
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United States of America Patent
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Jun 12, 2018
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N/A
app pub date -
May 23, 2016
filing date -
May 24, 2015
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Abstract
A direct coal liquefaction process and system is provided that utilizes a dispersed catalyst and recycle of atmospheric and vacuum fractionator bottoms to produce a maximum yield of jet fuel/diesel or chemical plant feedstock while eliminating all slurry heat exchangers and a slurry preheat furnace. Process hydrogen is preheated in a heat exchanger and, if necessary, in a hydrogen furnace, and mixed with the recycled atmospheric and vacuum fractionator bottoms being fed to the input of the direct liquefaction reactor. Heat for the hydrogen heat exchanger is provided by the overhead from the hot separator receiving the effluent from the direct liquefaction reactor. Product selectivity is controlled by operating conditions.
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