Sulfur recovery process using metal oxide absorbent
CA 1290551 C · Owner: Amoco Corporation · Inventors: Lee, Min-Hsiun; Pendergraft, Paul T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sulfur species are removed from a Claus plant tailgas stream by contacting with ZnO producing ZnS. ZnS is regenerated to ZnO by contacting with dilute °2 under conditions for reducing the volume of regeneration recycle to the Claus plant. GMB:sdg/jdb/cm, 86213ART0050
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
- Granted October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 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.