Reconditioning method for a non-acidic catalyst used in a high severity process for dehydrogenation of light hydrocarbons
CA 2060155 C · Owner: Uop · Inventors: Fettis, Michael E.; Cottrell, Paul R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high severity process for the dehydrogenation of a hydrocarbon selected from the group consisting of propane and butane in the presence of a catalyst comprising platinum and a non-acidic carrier material is substantially improved by periodically reconditioning the resulting coke-deactivated catalyst particles containing platinum by moving the catalyst particles through a combustion zone, a drying zon, a re-dispersion zone and a reduction zone. Dryingof the catalyst particles immediately after the combustion of coke substantiallyimproves the operation of a platinum re-dispersion zone. The lower moisture content in the re-dispersion zone allows the equilibrium reaction between hydrogen …
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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
- Filed January 28, 1992 and granted November 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2014.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.