Process for the purification and reheating of exhaust gases
CA 1307908 C · Owner: Bayer Aktiengesellschaft · Inventors: Gerken, Rudolf; Lailach, Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the purification and reheating of exhaust gases, ABSTRACT OF THE DISCLOSURE, A process for the removal of dust and sulphur dioxide from hot exhaust gases which have a low hydrogen halide content and the reheating of the purified exhaust gases, wherein, a) the hot exhaust gases are cooled to temperatures below 135°C by scrubbing with sulphuric acid b) sulphuric acid containing solids and dissolved metal sulphates is then separated from the exhaust gases from a), c) the exhaust gases from b) are cooled to temperatures of 50 to 70°C by scrubbing with 15 to 50 sulphuric acid, d) and desulphurized with the formation of sulphuric acid, e) and reheated to temperatures of 70 to 90°C by …
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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 September 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 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.