B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/18 (2006.01) B01D 21/00 (2006.01) B01D 53/34 (2006.01) B01D 53/52 (2006.01) B01D 53/74 (2006.01) B01F 3/04 (2006.01) B03D 1/16 (2006.01) C01B 17/05 (2006.01) C02F 1/24 (2006.01) C02F 3/20 (2006.01) B01F 7/00 (2006.01) C02F 1/72 (2006.01) C02F 1/78 (2006.01) A62D 3/00 (2006.01)
Patent
CA 2133454
Components, usually but not exclu- sively gaseous components, are removed in a liquid medium from gas streams and chemi- cally converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from gas streams by oxidation in aqueous chelated transition me- tal solution in a modified agitated flotation cell. The same principle may be employed with other procedures in which a gaseous phase is dispersed in a liquid phase to effect an interaction between components present in such phases, for example, to treat or strip or react a component of the liquid phase. A gas-liquid contact apparatus, which may be a combined chemical reactor and solid pro- duct separation device, also is described. In order to effect efficient mass transfer and rapid reaction, gas bubbles containing hy- drogen sulfide and oxygen are formed by ro- tating an impeller at a blade tip velocity of at least about 350 in/sec. to achieve the re- quired shear. To assist in the reaction, a surrounding shroud has a plurality of openings, generally of aspect ratio of approximate- ly 1, of equal diameter and arranged in uniform pattern, such as to provide a gas flow therethrough less than about 0.02 lb/min/ opening in the shroud. In general, the gas velocity index of gas through the openings in the shroud is at least about 18 per second per opening, preferably at least about 24 per second per opening. Each of the openings has an area correspoding to an equivalent diameter less than about one inch.
Ellenor David Todd R.
Harbinson John N.
Smith James W.
Apollo Environmental Systems Ltd.
Sim & Mcburney
The University Of Toronto Innovations Foundation
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