Method of passivating alkali metals on fluid catalytic cracking catalysts using aluminum containing compounds
CA 2035223 A1 · Owner: Betz Laboratories, Inc. · Inventors: Forester, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a hydrocarbon fluid catalytic cracking process high, concentrations of sodium in the hydrocarbon entering the reactor will poison the reaction sites on the FCC catalysts thereby reducing, the efficiency of the cracking process. The addition of an aluminum compound to the hydrocarbon significantly reduces the poisoning effect of the sodium on the catalyst. The aluminum compound may be selected from the group consisting of aluminum nitrate aluminum, isopropoxide, aluminum oxide and sulfate salts of aluminum.
Read the whole patent
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 29, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 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.