The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 1993
Filed:
Nov. 29, 1991
Applicant:
Inventors:
Robert R Frame, Glenview, IL (US);
Jeffery C Bricker, Buffalo Grove, IL (US);
Laurence O Stine, Western Springs, IL (US);
Thomas A Verachtert, Wheeling, IL (US);
Assignee:
UOP, Des Plaines, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
502155 ; 502163 ; 502164 ; 502167 ;
Abstract
This invention relates to a catalyst which is useful in oxidizing mercaptans present in a sour hydrocarbon fraction. The catalyst consists of an aqueous solution containing ammonium hydroxide, a metal chelate and an onium compound selected from the group consisting of quaternary ammonium, phosphonium, arsonium, stibonium, oxonium and sulfonium compounds. The counter ion of the onium compound is halide, nitrate, sulfate, phosphate, acetate, citrate and tartrate. The catalyst is used in a liquid-liquid process to sweeten a sour hydrocarbon fraction.