Recycling of waste heat boiler effluent to an oxygen- enriched claus reaction furnace
CA 1290140 C · Owner: Bond, Gary M. · Inventors: Pendergraft, Paul T.; Bond, Gary M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method of use thereof are disclosed for recovering sulfur from a feed gas stream containing hydrogen sulfide which is combusted with an oxygenenriched gas in a Claus reaction furnace. Within the method, combustion effluent from a waste heat boiler associated with the Claus reaction furnace is divided into a first and second stream so that the sulfur in the first stream is condensed and then the stream is passed on to later Claus reaction stages, and the sulfur in the second stream is condensed and then this stream is introduced into the Claus reaction furnace to moderate the temperatures therein. SHB:lmw/mh/cm, 86302ART0106
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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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.