Process for control of multistage catalyst regeneration with full then partial co combustion
CA 2087277 A1 · Owner: Owen, Hartley · Inventors: Owen, Hartley; Schipper, Paul H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for controlled multistage regeneration of FCC catalyst is disclosed. A modified high efficiency catalyst regenerator (80), with a fast fluidized bed coke combustor (62) dilute phase transport riser (83), and second fluidized bed (82) regenerates the catalyst in at least two stages. The primary stage of regeneration is in the coke combustor (62) at full CO oxidation, conditions. The second stage of catalyst regeneration occurs in the second fluidized bed (82), at partial CO combustion conditions. The process permits regeneration of spent FCC catalyst while minimizing NOx emissions and achieving significant reduction of SOx.
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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 July 10, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2013.
- 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.