Non-recovery coke oven gas combustion system
CA 2228201 A1 · Owner: Sprague, Hugh H. · Inventors: Sprague, Hugh H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for transporting and burning under negative pressure in a boiler a raw coke oven gas to produce steam energy. The system comprises the usual battery of coke ovens and corresponding ascension pipes connected to a collector main. Flushing liquor is sprayed into the hot coke oven gases to effect cooling in the collector main. A transport main delivers the cooled raw coke oven gases and flushing liquor to a burner of a steam producing boiler where the transport main includes a downcommer for separating the raw coke oven gas from the flushing liquor. The coke oven gas is burned in the boiler where a suction fan is provided at the exhaust of the boiler to develop a negative pressure in …
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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
- Filed January 29, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 2020.
- 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.