Method of recovering heat as well as fractions containing volatile alcohols and sulphur compounds from black liquor in connection with pulping
CA 1098657 A · Owner: Oy Rosenlew Ab · Inventors: Ronnholm, Arvi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Method of Recovering Heat as well as Fractions Containing Volatile Alcohols and Sulphur Compounds from Black Liquor in Connection with Pulping, Abstract of the Disclosure, A method of recovering heat as well as fractions containing volatile alcohols and sulphur compounds from black liquor obtained from pulping. In a vapour generator, water is by means of vapour, liberated at a high temperature and under a high pressure from the expansion of black liquor removed from a digester indirectly, vapourized into low-pressure vapour which is used for vapour treat-, ment of chips before their introduction into the digester. The condensate produced in the vapour generator is under pressure control, …
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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 April 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 7, 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
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.