Gas and liquid contact apparatus – Contact devices – Liquid tank
Patent
1973-08-27
1978-08-08
Chiesa, Richard L.
Gas and liquid contact apparatus
Contact devices
Liquid tank
164 16, 261 64B, 261DIG7, 261DIG65, 285158, 285286, 285405, B01F 304
Patent
active
041057252
ABSTRACT:
A process for generating in a pressure vessel a ready supply of a vapor of a normally liquid active substance in an inert carrier gas under pressure and dispensing vapor intermittently from the supply. Once a body of the active liquid substance and overlying atmosphere of vapor is established in the vessel, the vapor is dispensed intermittently in a series of predetermined doses. Simultaneously with the dispensing of each dose, carrier gas is bubbled under pressure into a bottom zone of the vessel in minute bubbles so as to provide saturated vapor, replacing the dose dispensed. A number of conditions are coordinated to insure that saturated vapor is always dispensed. These conditions include the relationship between the depth of the vapor space, the head of liquid above the bubbling zone, the relative amount of each dose, and the initial size of the bubbles. The process is specially useful for gassing cold box cores.
The apparatus includes a subdividing unit which is desirably a sintered stainless steel cylinder through which the gas is introduced into the liquid.
REFERENCES:
patent: 2584450 (1952-02-01), Holt et al.
patent: 3215140 (1965-11-01), Caparrelli
patent: 3256802 (1966-06-01), Karr
patent: 3316166 (1967-04-01), Bergson et al.
patent: 3362697 (1968-01-01), Silva et al.
patent: 3545731 (1970-12-01), McManus
patent: 3578295 (1971-05-01), Hudson
patent: 3590902 (1971-07-01), Walker et al.
patent: 3604729 (1971-09-01), Braucksiek et al.
patent: 3756577 (1973-09-01), Breiling
Brown Charles E.
Chiesa Richard L.
Liquid Carbonic Canada Ltd.
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