DEEP HYDROCONVERSION PROCESS USING AN EXTRACTION OF AROMATICS AND RESINS, WITH UPGRADING OF THE HYDROCONVERSION EXTRACT AND RAFFINATE IN DOWNSTREAM UNITS
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United States of America Patent
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Issued Date -
Dec 28, 2017
app pub date -
Jun 23, 2017
filing date -
Jun 23, 2016
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Abstract
Process for deep conversion of heavy hydrocarbon feed, which includes:
- a) ebullated bed hydroconverting the feed in at least one three-phase reactor containing at least one supported hydroconversion catalyst;b) atmospheric fractionating effluent from a) producing gasoline fraction, gas oil cut, and atmospheric residue;c) vacuum fractionation of at least a portion of the atmospheric residue to obtain a vacuum gas oil fraction and an unconverted vacuum residue fraction;d) deasphalting at least a portion of the unconverted vacuum residue fraction with an organic solvent obtaining a hydrocarbon cut depleted in asphaltenes, termed deasphalted oil, and residual asphalt; ande) liquid/liquid extraction on the hydrocarbon cut depleted in asphaltenes extracting aromatics by a polar solvent producing an extract enriched in aromatics and resins and a raffinate depleted in aromatics and resins, at least a portion of the extract sent to the inlet of the hydroconversion as an aromatic diluent.
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