Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
1990-12-05
1992-12-29
Straub, Gary P.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
423226, 423574R, 4235765, 42324301, 42324402, 261 792, C01B 1716, C01B 3120, C01B 1720, B05B 710
Patent
active
051749734
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 streams by oxidation in aqueous chelated transition metal solution in a modified agitated flotation cell. A gas-liquid contact apparatus, generally a combined chemical reactor and solid product separation device, comprising such modified agitated flotation cell also is described. In order to effect efficient 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 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 corresponding to an equivalent diameter 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: 3647069 (1972-05-01), Bailey
patent: 3911093 (1975-10-01), Sherif et al.
patent: 3925230 (1975-12-01), Koeptle et al.
patent: 3993563 (1976-11-01), Degner
patent: 4009251 (1977-02-01), Meuly
patent: 4036942 (1977-07-01), Sibeud 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: 4649032 (1987-03-01), Snavely, Jr. et al.
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: 4789530 (1988-12-01), Johnson et al.
patent: 4808385 (1989-02-01), 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.
Babor, Joseph W. Basic College Chemistry, Thomas Y. Crowell Co, N.Y., N.Y. 1953 pp. 255-260.
Chemical Abstracts, vol. 81, No. 8, 1974, (Columbus, Ohio, US), p. 242, abstract 41073s & JP, A, 7385475 (Tabata Kagaku Co. Ltd) Nov. 13, 1973.
"Development of Self-Inducing Dispenser for Gas/Liquid and Liquid/Liquid Systems" by Koen et al, Processing of the Second Duropean Conference on Mixing, Mar. 30-Apr. 1, 1977.
Chapter entitled "Outokumpu Flotation Machines" by K. Fallenius, in Chapter 29 of Flotation, ed. M. C. Fuerstenau, AIMM, PE Inc. N.Y. 1976.
Chapter entitled Flotation Machines and Equipment in "Flotation Agents and Processes, Chemical Technology Review #172", M. M. Ranney, Editor, 1980.
Ellenor David T. R.
Harbinson John N.
Smith James W.
Straub Gary P.
University of Toronto - Innovations Foundation
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