Process for removing sulphur from the waste gas of a reduction shaft furnace
CA 1307907 C · Owner: Deutsche Voest-Alpine Industrieanlagenbau Gmbh · Inventors: Hauk, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel process for removing the sulphur contained in a gaseous compound by absorbtion from at least part of the waste gas of a reduction shaft furnace (1) for iron ore is described. The waste gas is initially cleaned in a scrubber (13) and cooled followed, by desulphurlzation, during which the sulphur-absorbIng material is constituted by part of the sponge iron produced in the reduction shaft furnace. Desulphurization advantageously takes place at a temperature in the range 30 to 60°C. It is preferably carried out on the CO2 separated from the blast furnace gas and the blast furnace gas part used as export gas.
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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.