Liquid purification or separation – Processes – Separating
Patent
1995-06-05
1996-03-19
Dawson, Robert A.
Liquid purification or separation
Processes
Separating
2102212, 210703, 210758, 210704, 2102211, 422168, 261 84, 423220, 4235764, 4235121, C01B 1716, B01D 2126
Patent
active
055001351
ABSTRACT:
Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from gas streams by oxidation in aqueous chelated transition metal solution in a modified agitated flotation cell. The same principal may be employed in other procedures in which a gaseous phase is dispersed in a liquid phase to effect an interaction between components present in such phases. A gas-liquid contact apparatus, generally a combined chemical reactor and solid product separation device, comprising such modified agitated flotation cell is also described. In order to effect mass transfer and rapid reaction gas bubbles containing hydrogen sulfide and oxygen are formed by rotating an impeller at a blade tip velocity of at least about 350 in/sec. to achieve the required shear. To assist in the reaction, a surrounding shroud has a plurality of openings, generally of aspect ratio of approximately 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. Each of the openings has an area corresponding to an equivalent diameter of less than about one inch.
REFERENCES:
patent: 2274658 (1942-03-01), Booth
patent: 2294827 (1942-09-01), Booth
patent: 2659691 (1953-11-01), Gislon et al.
patent: 3273865 (1966-09-01), White
patent: 3341450 (1967-09-01), Ciabatttari et al.
patent: 3647069 (1972-05-01), Bailey
patent: 3796678 (1974-03-01), Sen
patent: 3911093 (1975-10-01), Sherif et al.
patent: 3915391 (1975-10-01), Mercade
patent: 3925230 (1975-12-01), Koeptle et al.
patent: 3979282 (1976-09-01), Cundy
patent: 3993563 (1976-11-01), Degner
patent: 4009251 (1977-02-01), Meuly
patent: 4036942 (1977-07-01), Sibeud et al.
patent: 4255262 (1981-03-01), O'Cheskey et al.
patent: 4442083 (1984-04-01), Canales et al.
patent: 4452766 (1984-06-01), Pike
patent: 4525338 (1985-06-01), Klee, Jr.
patent: 4534952 (1985-08-01), Rapson et al.
patent: 4552747 (1985-11-01), Goar
patent: 4576708 (1986-03-01), Oko et al.
patent: 4618427 (1986-10-01), Venas
patent: 4648973 (1987-03-01), Hultholm et al.
patent: 4649032 (1987-03-01), Snavely, Jr. et al.
patent: 4666611 (1987-05-01), Kaelin
patent: 4683062 (1987-07-01), Krovak et al.
patent: 4737272 (1988-04-01), Szatkowski et al.
patent: 4789469 (1988-12-01), Cvitas et al.
patent: 4808385 (1988-02-01), Grinstead
patent: 4824645 (1989-04-01), Jones et al.
patent: 4889701 (1989-12-01), Jones et al.
patent: 4919914 (1990-04-01), Smith et al.
patent: 4959183 (1990-09-01), Jameson
"Development of Self-Inducing Dispenser for Gas/Liquid and Liquid/Liquid Systems" by Koen et al, Proceedings of the Second European Conference on Mixing, 30th Mar.-1st Apr., 1977.
"Outokumpu Flotation Machines" by K. Fallenius, in Chapter 29 of Flotation, ed. M. C. Fuerstenau, AIMM, PE Inc, New York 1976.
"Flotation Machines and Equipment" in Flotation Agents and Processes, Chemical Technology Review #172, M. M. Ranney, Editor, 1980.
Chemical Abstracts, vol. 81, No. 8, 1974, (Columbus, Ohio, US), p. 242, abstract 41073s & JP, A, 7385475 (Tabata Kagaku Co. Ltd) 13 Nov. 1973.
Ellenor David T. R.
Harbinson John N.
Smith James W.
Apollo Environmental Systems Corp.
Dawson Robert A.
Reifsnyder David A.
The University of Toronto Innovations Foundation
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