Electrolytically increasing sulfuric acid concentration in presence of chlorine containing oxidizing agent
CA 1061285 A · Owner: The Dow Chemical Company · Inventors: Clarke, E. Colin W.; Glew, David N.; Gilbert, Jeffrey F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved method and apparatus for reducing the content of water in aqueous sulfuric acid solutions by electrolysis is provided wherein a sufficient amount of a chlorine containing oxidizing agent is provided in the solution in the vicinity of the cathode to prevent the build-up of sulfur deposits thereon. In an integrated system, drying of a wet fluid stream on a continuous basis is effected by contacting it with concentrated sulfuric acid and purifying and recycling the sulfuric acid by the method of this invention only, a small inventory of the sulfuric acid being required.
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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 August 28, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 28, 1996.
- 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.