Textiles: fluid treating apparatus – Machines – Combined
Patent
1998-01-27
1999-08-17
Coe, Philip R.
Textiles: fluid treating apparatus
Machines
Combined
68 18C, 68 18F, 134108, 134109, D06F 4308, B08B 1300
Patent
active
059376759
ABSTRACT:
Method and system of rejuvenating pressurized fluid solvents used for cleaning a substrate in a pressurized vessel. A primary flow of the pressurized fluid solvent is continuously cycled from the pressurized vessel through a series of filters to remove insoluble and soluble contaminants, and then returned to the pressurized vessel. A secondary flow of the pressurized fluid solvent, preferably equivalent to less than about 40% of the primary flow, is directed either continuously or intermittently during the cleaning operation to an evaporator to evaporate the pressurized fluid solvent of the secondary flow into a vapor and to separate contaminants therefrom. The vapor from the evaporator is then either liquified by a compressor or condenser to create rejuvenated pressurized fluid solvent and redirected to the pressurized vessel for further use, or vented to atmosphere and replaced by new pressurized fluid solvent from a supply tank. Pressure equalization lines extend between a storage tank and various system components to allow solvent vapor to displace therebetween.
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Coe Philip R.
R.R. Street & Co. Inc.
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