Catalyst regeneration process including metal contaminants removal
CA 1183116 A · Owner: Hri, Inc. · Inventors: Ganguli, Partha S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Spent catalysts removed from a catalytic hydrogenation process for hydrocarbon feedstocks, and containing undesired metals contaminants deposits, are regenerated. Following solvent washing to remove process oils the catalyst is, treated either with chemicals which form sulfate or oxysulfate compounds with the metals contaminants or with, acids which remove the metal contaminants such as 5-50 W %, sulfuric acid in aqueous solution and 0-10 W % ammonium ion, solutions to substantially remove the metals deposits. The acid treating occurs within the temperature range of 60-250°F for 5-120 minutes at substantially atmospheric pressure. Carbon deposits are removed from the treated catalyst by …
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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 February 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 2002.
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Timeline
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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.