Liquid purification or separation – Flow – fluid pressure or material level – responsive – Filter cleaning
Patent
1993-06-21
1995-02-14
Dawson, Robert A.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Filter cleaning
210111, 210116, 210137, 210259, 2104161, 2105101, B01D 3600, B01D 4104
Patent
active
053892445
ABSTRACT:
A pressure and vacuum filtration and washing device adapted for the processing and handling of hazardous materials without releasing hazardous chemical vapors includes a microporous filter medium which is contained within a pressurized filter vessel. A pump and static mixer, interconnected with the filter vessel by suitable piping means, allow circulation and reslurrying of the filter cake until the wash solvent is properly free of contaminants. The device any be operated under an inert atmosphere. A heated nitrogen gas cake drying means may be associated with the filter medium and contained within the filter. Automatic failsafe control valves are strategically disposed in the device, and the piping means, which interconnect the filter medium, the drying means, and the valves, are fabricated from materials compatible with the flow streams, such as teflon and borosilicate glass,. The device is totally enclosed and self contained, insuring complete operator isolation from hazardous chemicals. The device is used in the pilot plant stage of the chemical industry production life cycle. The filter medium may be a sintered glass, woven or non-woven metal, ceramic, or other microporous medium.
REFERENCES:
patent: 4018899 (1977-04-01), Seckler et al.
patent: 4057437 (1977-11-01), Kracklauer
patent: 4081381 (1978-03-01), Rosenmund et al.
patent: 4250032 (1981-02-01), Costa
patent: 4328100 (1982-05-01), Moritz et al.
patent: 4402834 (1983-09-01), Bastgen et al.
patent: 4592835 (1986-06-01), Grieder et al.
patent: 4963271 (1990-10-01), Raehse et al.
patent: 5209855 (1993-05-01), Solaas
Dawson Robert A.
Gershman Arthur P.
Walker W. L.
LandOfFree
Pressure and vacuum filtration and washing device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure and vacuum filtration and washing device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure and vacuum filtration and washing device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-285135