Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1991-04-22
1992-05-05
Nozick, Bernard
Gas separation
Means within gas stream for conducting concentrate to collector
55233, 55259, 261118, B01D 4700
Patent
active
051103257
ABSTRACT:
This invention relates to a novel gas-liquid contacting apparatus and method utilizing recycle spray contact trays disposed within a substantially vertical vessel. Each contact tray contains one or more housings defined by upstanding vertical wall members, said housings being open to gas flow at top and bottom. Within the housings, liquid spray is continuously generated by means of gas flowing upward past a first array of horizontally spaced-apart gas venturi-generating liquid conductors. Liquid flows from the tray floor outside the housing through the liquid conductors, is distributed into the gas, and is entrained upward as spray by the gas venturi action. Horizontally-disposed foraminous or perforated flow-restrictive elements, vertically spaced apart, mounted on top of the housings, cause the liquid spray to coalesce and regenerate at the first flow-restrictive barrier element which occupies the cross-sectional area of the vertical housing. A major portion of the gas and contained spray is then caused to flow laterally, normal to the upward gas flow direction, through the high-voidage space between the elements. The flow-restrictive elements are comprised of foraminous or perforated plates, or anisotropic material such as layered mesh. The spray issuing laterally impinges on the vessel walls and liquid therefrom drains downward or falls by gravity to the tray floor, where the process is repeated. The method of invention encompasses spray contacting with automatic and continuous recirculation of liquid spray in a controlled manner at rates that are multiples of the liquid throughput rate, and is capable of operation at high has velocities and low pressure drop.
REFERENCES:
patent: 5024686 (1991-06-01), Lerner
Nozick Bernard
Williams Olin E.
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