Sulfur dioxide scrubbing system
CA 1079030 A · Owner: Continental Oil Company · Inventors: Struck, Robert T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The refractory non-regenerable alkali metal sulfate, produced in a regenerative SO2 scrubbing system which uses thiosulfate-rich solutions of the alkali metal SO2 absorbent is removed from the system by precipitation after regeneration of the alkali metal absorbent but before re-entry into the scrubbing circuit, based upon the discovery that the alkali metal sulfate is least soluble in the multi-component solution leaving the regenerator than anywhere else in the entire system. An additional feature of the invention is the recovery of the precipitated sulfate in an odor-free state by washing with a slip-stream of the spent absorbent solution.
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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 June 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 1997.
- 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.