Regeneration of ion exchange resins
CA 1105157 A · Owner: Alchem Inc. · Inventors: Horembala, Louis E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Problems encountered with sodium leakage after regeneration of mixed bed and ion exchange units utilized to purify boiler feed waters can be reduced or eliminated by using as the regenerant for the anion exchange resin an aqueous solution of potassium hydroxide. Likewise, in the regeneration of cation condensate polishing units utilized to purify boiler feed waters sodium, leakage can be reduced or eliminated by utilizing a potassium salt as the regenerant. Additionally, potassium salts of various inorganic reducing agents can also be utilized to remove iron from ion exchange systems operated in the above manner.
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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 July 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 1998.
- 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
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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.