Solvent extraction of hydrocarbon oils
Patent
·
OSTI ID:5202351
A solvent refining process is disclosed utilizing n-methyl-2-pyrrolidone as solvent. The extract from the solvent extraction zone is cooled to form two immiscible liquid phases, a secondary extract phase and a secondary raffinate phase. The secondary raffinate phase is returned to the extraction zone resulting in increased yield of refined oil product and savings in energy required for the process.
- Assignee:
- Texaco Inc
- Patent Number(s):
- US 4328092
- OSTI ID:
- 5202351
- Country of Publication:
- United States
- Language:
- English
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