Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1983-11-28
1985-05-07
Fisher, Richard V.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
426428, A23F 320
Patent
active
045156956
ABSTRACT:
Extraction of dissolved substances from aqueous solution by contacting the solution with a mixture of fluorocarbon solvents comprising normally gaseous monochlorodifluoromethane and normally liquid trichlorotrifluoroethane. Contact is carried out under pressure which maintains the solvent mixture in the liquid state. The aqueous solution and the solvent mixture form two phases upon standing. Separation of the phases and release of pressure on the fluorocarbon solvent liberates the monochlorodifluoromethane from the mixture, and extracted material insoluble in trichlorotrifluoroethane either precipitates or forms a second liquid layer. The insoluble material is then separated from the trichlorotrifluoromethane.
REFERENCES:
patent: 3669679 (1972-06-01), Panzer et al.
patent: 3769033 (1973-10-01), Panzer et al.
patent: 3770456 (1973-10-01), Roselius et al.
patent: 3806619 (1974-04-01), Zosel
patent: 4255458 (1981-03-01), Roselius et al.
patent: 4322445 (1982-03-01), Peter et al.
patent: 4349415 (1982-09-01), DeFilippi et al.
"Heat Transfer Consideration in Utilizing Solar and Geothermal Energy", Michel, J. W. Alternative Energy Sources 1977, (Pub. 1978)6 2801-2825.
"Ocean Thermal Energy Conversion (OTEC) Plant Working Fluid Study", Nelson, M. I. Proc. Condens. Pap.-Miami Int. Conf. Alternative Energy Sources 1977, 107-108.
"Report on Subacute Toxicological Studies with Several Fluorocarbons in Rats and Dogs by Inhalation" Leuschner, F. Arznein-Forsch, (1983), 33(10) 1475-1476.
"Acute Inhalation Toxicity of Some Halogenated and Nonhalogenated Hydrocarbons", Clark, D. G.; Hum. Toxicol, 1982 1(3) 239-247.
"Viscosity of Liquid Refrigerants and Refrigerant Mixtures" Heide, R. Luft-Kaeltetech, 1981, 17(1), pp. 7-10.
"Optimum Properties of Working Fluids for Solar Powered Heat Pumps" Stiel, L. I. Rec. Intersoc. Energy Convers., Eng. Conf., 10th, 1975, 171-177.
E.I. Du Pont de Nemours and Company
Fisher Richard V.
Jones W. Gary
LandOfFree
Extraction of substances from aqueous solution does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Extraction of substances from aqueous solution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extraction of substances from aqueous solution will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1798588