Method and equipment for emissionfree operation of a coking plant
CA 1104968 A · Owner: Hoogovens Ijmuiden B.V. · Inventors: Thijssen, Nicolaas J.W.; Vander, Timen; Middel, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
It is proposed to continue the injection of steam into the ascension pipe of each coking chamber in a coking plant for a period of time after charging of that chamber so as to create a slightly sub-atmospheric pressure in the chamber during the initial stage of the coking process, in order to reduce leakage of gas and fumes to the atmosphere past the doors and filling openings. A time clock operated by the coke pusher machine or by the coal charging machine is provided to stop this injection of steam after a desired period of time. - 1 -
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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 July 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 1998.
- 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
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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.