Plasma treatment of flue gases
CA 1258441 A · Owner: Barton, Thomas G. · Inventors: Fox, Edward S.; Barton, Thomas G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus is disclosed for reducing acid rain caused by the combustion of fossil fuels in stationary combustion units, such as power plants smelters, or refineries. Compounds such as nitric oxide and sulphur dioxide are discharged into the atmosphere from smoke stacks of these combustion units and this causes acid rain. In this invention these compounds are treated in the smoke stacks or flues of these combustion units by subjecting the flue gases to ozone and ultraviolet radiation produced by a plasma arc burner mounted in the flue. This converts the offending compounds to water soluble oxides and an aqueous alkaline spray is introduced into the flue to dissolve and neutralize …
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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 15, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 15, 2006.
- 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.