Back to results
US 4,290,879 AGranted
Removal of carbonyl sulfide from liquid hydrocarbon streams
AssigneeExxon Production Research Company
InventorsRobert M. Woodall, Eugene Damron, Martin B. Mick
Life of this patent
Estimating the term…
Abstract
Carbonyl sulfide is removed from propane and other similar liquefied petroleum gas products by mixing liquid methanol with the untreated liquefied gas and then contacting the liquid mixture with solid potassium hydroxide.
Claims5
In a process for removing carbonyl sulfide from an essentially water-free liquid hydrocarbon stream the improvement comprising:
- mixing said hydrocarbon stream containing carbonyl sulfide with liquid methanol;
- passing said mixed methanol-hydrocarbon stream upwardly through a bed of solid potassium hydroxide arranged in a reaction vessel, said potassium hydroxide, methanol and carbonyl sulfide reacting to form reaction products H.sub.2 O and KSCOOCH.sub.3 ;
- the superficial velocity of said hydrocarbon stream being less than about one foot per minute;
- and
- separating said reaction products from said treated hydrocarbon stream by downward flow of said reaction products and upward flow of said treated hydrocarbon stream in said vessel to provide essentially 100% removal of said carbonyl sulfide from said liquid hydrocarbon stream.
2 more elements
Dependencies are inferred from the claim text.