Caustic free liquid/liquid process for sweetening a sour hydrocarbon fraction
This patent describes a catalyst effective in oxidizing mercaptans contained in a sour hydrocarbon fraction to disulfides. It comprises ammonium hydroxide, a metal chelate and an onium compound in an aqueous solution, the onium compound selected from the group consisting of quaternary ammonium, phosphonium, arsonium, stibonium, oxonium and sulfonium compounds having the formula (R{prime}R{double prime}R{sub y}M) {sup +}X{sup {minus}} where R is a hydrocarbon group containing up to about 20 carbon atoms and selected from the group consisting of alkyl, cycloalkyl, aryl, alkaryl, and aralkyl, R{prime} is a straight chain alkyl group containing from about 5 to about 20 carbon atoms, R{double prime} is a hydrocarbon group selected from the group consisting of aryl, alkaryl and aralkyl, M is nitrogen, phosphorus, arsenic, antimony, oxygen or sulfur, X is, a halide and y is 1 when M is oxygen or sulfur and y is 2 when M is phosphorus, arsenic, antimony or nitrogen.
- Assignee:
- UOP, Des Plaines, IL (United States)
- Patent Number(s):
- US 5093296; A
- Application Number:
- PPN: US 7-572824
- OSTI ID:
- 5356809
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
CATALYSTS
CATALYTIC CRACKING
CHELATING AGENTS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
INDUSTRIAL PLANTS
KINETICS
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM REFINERIES
PYROLYSIS
REACTION KINETICS
SEPARATION PROCESSES
SULFUR CONTENT
THERMOCHEMICAL PROCESSES