Gas separation – Two or more separators – Plies or layers of different characteristics or orientation
Patent
1987-06-16
1988-07-26
Nozick, Bernard
Gas separation
Two or more separators
Plies or layers of different characteristics or orientation
55527, 55528, 55498, 55524, 55DIG25, 210DIG5, 210489, 210505, B01D 5000
Patent
active
047597828
ABSTRACT:
A coalescing filter capable of removing liquid aerosols (such as water and oil) from gaseous streams with high efficiency. The filter comprises three layers, (a) an intermediate fibrous layer having a pore size of from about 1.25(t) to about 2(t), where t is the dynamic film thickness of the aerosol in the gaseous stream, the fibers of the intermediate fibrous layer having diameters ranging from about 0.1 to about 20 micrometers, (b) a fibrous layer upstream of the intermediate layer having a pore size greater than the intermediate layer, and (c) a downstream fibrous layer having a pore size greater than the intermediate layer and wherein the critical surface energy of each layer of the filter is less than the surface tension of the liquid making up the aerosol.
REFERENCES:
patent: 3107986 (1963-10-01), Plaut et al.
patent: 3250059 (1966-05-01), Vosseller
patent: 3708965 (1973-01-01), Domnick
patent: 3794583 (1974-02-01), Rhodes
patent: 4050237 (1977-09-01), Pall et al.
patent: 4086070 (1978-04-01), Argo
patent: 4160684 (1979-07-01), Berger et al.
Koslow Evan E.
Miller John D.
Williamson Kenneth M.
Nozick Bernard
Pall Corporation
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