Method of removing sulphur oxides from flue gases
CA 1306845 C · Owner: Kvaerner Pulping Oy · Inventors: Laine, Jouko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of removing sulphur oxides from flue gases in which method lime such as calcium carbonate is fed into a separate reactor space positioned in a boiler. In the reactor space the lime is converted into calcium oxide and carbon dioxide under the influence of the temperature prevailing in the furnace of the boiler. Pressurized air causes the calcinating lime and the obtained calcium oxide to flow through the tubular space, whereby at the other end of the space substantially all lime has been converted into oxide and is fed therefrom into the boiler among its flow of flue gases for the actual desulphuration reaction.
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 September 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 2009.
- 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.