Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1992-02-21
1993-09-14
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
42324301, 42324302, 208206, C01B 1700, C01B 1720, C10G 1900
Patent
active
052446433
ABSTRACT:
Fuel gas streams containing oxygen are treated by a process that performs simultaneous sweetening and absorption of mercaptan compounds. The mercaptan oxidation catalyst and an aqueous alkaline solution and a low vapor pressure liquid hydrocarbon stream contact the fuel gas feed in a mixing vessel to sweeten the mercaptans and absorb resulting disulfides from the gas stream into the liquid hydrocarbon stream. A separation vessel receives the dual phase effluent from the mixing vessel and settles the effluent into three component phases. An upper gas phase provides a treated fuel gas stream, an intermediate hydrocarbon phase provides liquid hydrocarbons containing disulfides for removal from the process, and recycle to the mixing vessel and an alkaline solution drains from the bottom of the settler. The aqueous alkaline solution is pumped back to the mixing vessel in combination with the mercaptan oxidation catalyst.
REFERENCES:
patent: 4020144 (1977-04-01), Bosniack
patent: 4049572 (1977-09-01), Douglas
Heller Gregory A.
McBride Thomas K.
Tolomei John G.
UOP
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