Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By plural serial diverse separations
Patent
1990-12-05
1992-03-10
Phan, Nhat
Chemistry of hydrocarbon compounds
Purification, separation, or recovery
By plural serial diverse separations
585818, 585819, 585857, 585863, 585864, 208308, 208327, 208330, 208335, 210644, 210650, 210651, C07C 700, C07C 7144, C10G 2116, B01D 1100
Patent
active
050951700
ABSTRACT:
The yield, raffinate product quality, and throughput of the selective solvent extraction of hydrocarbon feeds is improved by subjecting the hydrocarbon feeds from which aromatic hydrocarbons are to be selectively solvent extracted to a membrane separation process which selectively permeates aromatics through the membranes to produce a permeate rich in aromatics and a retentate rich in saturates and 1-ring aromatics and subjecting this retentate to the selective solvent extraction process.
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Chen Tan-Jen
Sweet James R.
Allocca Joseph J.
Exxon and Research and Engineering Company
Phan Nhat
LandOfFree
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