Supercritical separation process for complex organic mixtures
A process is disclosed for separating low molecular weight components from complex aqueous organic mixtures. The process includes preparing a separation solution of supercritical carbon dioxide with an effective amount of an entrainer to modify the solvation power of the supercritical carbon dioxide and extract preselected low molecular weight components. The separation solution is maintained at a temperature of at least about 70 C and a pressure of at least about 1,500 psi. The separation solution is then contacted with the organic mixtures while maintaining the temperature and pressure as above until the mixtures and solution reach equilibrium to extract the preselected low molecular weight components from the organic mixtures. Finally, the entrainer/extracted components portion of the equilibrium mixture is isolated from the separation solution. 1 fig.
- DOE Contract Number:
- AC02-83CH10093
- Assignee:
- Midwest Research Inst., Kansas City, MO (United States)
- Patent Number(s):
- US 4964995; A
- Application Number:
- PPN: US 7-368170
- OSTI ID:
- 7070265
- Resource Relation:
- Patent File Date: 16 Jun 1989
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ORGANIC COMPOUNDS
SUPERCRITICAL GAS EXTRACTION
AQUEOUS SOLUTIONS
CARBON DIOXIDE
ENTRAINMENT
HIGH PRESSURE
TEMPERATURE RANGE 0273-0400 K
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
DISPERSIONS
EXTRACTION
MIXTURES
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
TEMPERATURE RANGE
400105* - Separation Procedures