Supercritical separation process for complex organic mixtures

Patent · Tue Oct 23 04:00:00 EDT 1990

OSTI ID:7070265

Chum, H L; Filardo, G

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
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
AQUEOUS SOLUTIONS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DISPERSIONS
ENTRAINMENT
EXTRACTION
HIGH PRESSURE
MIXTURES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SUPERCRITICAL GAS EXTRACTION
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K