Method for eliminating reentry disulfides in a mercaptan extraction process
CA 1291958 C · Owner: Staehle, Bruce E. · Inventors: Staehle, Bruce E.; Bricker, Jeffery C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A MERCAPTAN EXTRACTION PROCESS", ABSTRACT OF THE INVENTION Reentry disulfides are eliminated in a continuous process for treating a sour hydrocarbon stream by extracting the mercaptans contained in said hydrocarbon stream with a disulfide-free alkaline solution in an extraction zone oxidizing the mercaptans to disulfides in the presence of an oxidation catalyst, separating a major portion of the disulfides from said alkaline solution reducing the, residual disulfides in said alkaline solution to mercaptans and recycling the resulting substantially disulfide-free alkaline solution to the extraction zone. Two ways are disclosed to effect the reduction of the disulfides to mercaptans: 1) …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.