Process for producing elemental sulphur
CA 1305845 C · Owner: Eremin, Oleg G. · Inventors: Matros, Jury S.; Zagoruiko, Andrei N.; Malakhova, Irina V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the production of elemental sulphur from sulphur dioxide and hydrogen sulphide by the Claus reaction. To obtain elemental sulphur into a catalyst bed di-, vided into at least two parts the reaction gas having temperature of not less than 120°C is introduced in the direction perpendicular to the cross-section along which the catalyst bed is divided. At least into one part of the catalyst bed sulphur dioxide and hydrogen sulphide are introduced at a temperature below the dew point of sulphur. Between parts of the catalyst bed resulting from its division intermixing and/or cooling of the reaction gas is effected. In at least one part of the catalyst bed the …
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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 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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.