Charles A. Lieder - Houston TX Carl H. Deal - Houston TX
Assignee:
Shell Oil Company - Houston TX
International Classification:
C01B 1705 B01D 5334
US Classification:
423573G
Abstract:
Hydrogen sulfide and carbonyl sulfide are removed from a gas stream in a staged procedure characterized by conversion of the hydrogen sulfide to produce sulfur in aqueous solution, hydrolysis of the carbonyl sulfide remaining in the gas stream to produce hydrogen sulfide and carbon dioxide, and removal of the hydrogen sulfide from the gas stream.
Simultaneous Removal Of Water And Hydrogen Sulfide From Gaseous Carbon Dioxide
Carl H. Deal - Houston TX A. John Flynn - Houston TX
Assignee:
Shell Oil Company - Houston TX
International Classification:
B01D 5314
US Classification:
55 32
Abstract:
The present invention is an improved process for simultaneously removing H. sub. 2 O and H. sub. 2 S from gas streams containing predominantly CO. sub. 2. The process comprises: (a) contacting the gas feed stream in an absorption zone with a diethylene glycol, triethylene glycol and/or tetraethylene glycol absorbent to produce a CO. sub. 2 -rich gas and a loaded H. sub. 2 S-rich liquid absorbent; (b) flashing the loaded absorbent to remove a major portion of the CO. sub. 2 which is recycled to the absorber; (c) flashing the semi-loaded solvent at least once, and preferably two or more times, to remove a major portion of the H. sub. 2 S, to produce a semi-lean absorbent; and (d) regenerating the semi-lean absorbent and returning same to the absorption zone.
Carl H. Deal - Houston TX Stephen H. Garnett - Tivon, IL
Assignee:
Shell Oil Company - Houston TX
International Classification:
C10G 2122 C10G 2128
US Classification:
208321
Abstract:
Sulfolane is recovered from the extract and raffinate product streams of an extraction process employing sulfolane as the solvent by contacting the extract and raffinate product streams with a solid adsorbent and regenerating the adsorbent by displacing the adsorbed solvent with extraction process feed.
Process For Separation Of Salt From Heavy Ends Wastes Of Glycerine Manufacture
George C. Blytas - Houston TX Carl H. Deal - Houston TX
Assignee:
Shell Oil Company - Houston TX
International Classification:
C02B 120
US Classification:
2604125
Abstract:
A process is described for separating salt (sodium chloride) from the polyglyceride-containing organic phase of the heavy ends waste or glycerine foots still bottoms obtained in conventional manufacture of glycerine via hydrolysis of epichlorohydrin or glycerol dichlorohydrins. In this process, the heavy ends wastes made up primarily of salt and polyclycerides and containing less than about 6% by weight water are treated at elevated temperatures with sufficient amounts of n-butanol to bring about precipitation of the salt followed by separation of the n-butanol-containing liquid phase substantially free of salt from the precipitated salt, cooling of the separated liquid phase to a temperature at which the n-butanol phase separates from the substantially salt-free polyglyceride phase without further salt precipitation and recovery of the n-butanol from the phase-separated polyglyceride phase. After recovery from the phase separated, substantially salt free polyglyceride phase, the n-butanol is suitably recycled to the first step of the process for use in precipitating additional quantities of salt from the heavy ends wastes.