Separation of an aqueous solution by the improved vacuum freezing high pressure ice-melting process
CA 1136383 A · Owner: Cheng, Sing-Wang · Inventors: Cheng, Wu-Cheng; Cheng, Chen-Yen; Cheng, Sing-Wang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the Improved Vacuum-Freezing High Pressure Ice Melting Process an aqueous solution is flash vaporized under a reduced pressure to simultaneously form a low pressure water vapor and ice crystals. The ice formed is first purified in a counter-washer and then molted inside Or heat conductive conduits under a high pressure (e.g. 600 atm.) and the low pressure water vapor is desublimed to form desublimed (ice) on the outside of the conduits. The latent heat of desublimation released is utilized in supplying the heat needed in the ice-melting operation the disability is removed intermittently by an in-situ dissolution operation utilizing an aqueous solution such as the feed solution or the …
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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 November 30, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 1999.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.