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US 4,878,929 AGranted
Liquid-gas separator
AssigneeNelson Industries, Inc.
InventorsKenneth M. Tofsland, Jeffrey S. Morgan, Eric G. Gryttenholm, Tadeusz Jaroszczyk
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AssigneeNelson Industries, Inc.
InventorsKenneth M. Tofsland, Jeffrey S. Morgan, Eric G. Gryttenholm, Tadeusz Jaroszczyk
Estimating the term…
A cartridge-type liquid-gas separator having particular use for separating oil from air. The separator includes an outer casing containing an annular pleated first stage filter element and an annular second stage element located concentrically of the first stage element. The first stage filter element is composed of a coalescer section formed of unwoven fibrous material and a disloader section disposed downstream of the coalescer section and composed of multiple layers of fibrous material impregnated with a resin having low surface energy. The first stage element can also include a pair of screens, one located upstream of the coalescer section and a second located downstream of the disloader section. The second stage which is spaced downstream from the first stage is composed of a fibrous stripper layer followed by a screen. The entrained oil contained within the air is coalesced in the coalescer section to form larger size droplets and the disloader aids in discharging the droplets downwardly for collection in the center of the second stage filter unit, while the second stage strips any remaining oil droplets from the air.
A gas liquid separator, comprising a casing having an inlet to receive a gas containing entrained liquid and having an outlet, first stage filter means disposed within the casing, second stage filter means disposed within the casing and located downstream of said first stage filter means, said first stage filter means including a coalescor section composed of unwoven fibrous material having an average fiber diameter of 0.5 to 50 microns and having a Frazier permeability of 3 to 100, said first stage filter means also including a disloader section disposed downstream and in engagement with said coalescor section and composed of a plurality of contiguous layers of snythetic fibers coated with a resin having a low surface energy, said disloader section having a Frazier permeability of 10 to 600, said second stage filter means consisting of a mass of filter media having a greater permeability than said coalescor section.
A liquid gas separator, comprising an outer casing having an inlet to receive a gas containing entrained liquid and having an outlet to discharge the gas, an annular pleated first stage element disposed within the casing, an annular second stage element disposed within the casing and mounted concentrically of said first stage element, said first stage element comprising a coalescor section composed of unwoven fibrous material having an average fiber diameter of 0.5 to 50 and a Frazier permeability of 3 to 100, said first stage also including a disloader section disposed downstream of said coalescor section and disposed in engagement with said coalescor section, said disloader section composed of a plurality of contacting layers of synthetic fibers coated with a resin having low surface energy, said layers of said disloader section each having a thickness in the range of 0.01 to 0.75 inch and having a Frazier permeability of 30 to 800, said second stage including a layer of fibrous material composed of unwoven synthetic fibers and having a greater permeability than that of said coalescor section.
Dependencies are inferred from the claim text.