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U.S. Department of Energy
Office of Scientific and Technical Information

Means for and methods of low sulfur and hydrotreated resids as input feed streams

Patent ·
OSTI ID:6375039
A process is described for simultaneously refining hydrotreated and low sulfur resid feed streams in a single solvent extraction unit having at least three successive solvent extracting separator stages, said process comprising the steps of: (a) providing a first source of hydrotreated resid; (b) providing a second source of virgin low sulfur resid; (c) mixing hydrotreated resid from said first source and a solvent; (d) feeding a mixture resulting from step (c) into a first of said separator stages; (e) mixing a separated top level output of said first separator stage and a low sulfur resid from said second source; (f) feeding a mixture resulting from step (e) into a second of said separator stages; (g) feeding a top level output from said second separator stage to said third separator stage; (h) withdrawing separated asphaltenes from said first separator stage; (i) withdrawing separated resins from said second separator stage; and (j) separating and withdrawing solvent and deasphalted oil recovered from said third stage.
Assignee:
Amoco Corp., Chicago, IL (United States)
Patent Number(s):
A; US 5228978
Application Number:
PPN: US 7-824508
OSTI ID:
6375039
Country of Publication:
United States
Language:
English