Pulp mill recovery system
CA 1061059 A · Owner: Domtar Inc. · Inventors: Tomlinson, George H. (Ii)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of increasing the chemical recovery capacity of a Kraft Recovery Furnace by injecting solid pellets of sodium sulphate and sodium carbonate directly onto the char bed in the reducing zone of the furnace while maintaining the temperature and reducing atmosphere in this zone thereby to form a smelt containing sodium sulphide and sodium carbonate from the injected pellets. These pellets may be produced from a further quantity of black liquor in an auxiliarly incinerator such as a fluid bed combustion unit. This invention permits increasing the recovery capacity of a furnace without necessitating the construction of a new Recovery Furnace.
Read the whole patent
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
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.