Hydrogen enrichment scheme for autothermal reforming
CA 2435960 C · Owner: Singh, Shashi Prakash · Inventors: Malhotra, Avinash; Singh, Shashi Prakash
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Recycling a portion of autothermal reformer effluent into the steam-hydrocarbon feed stream with a thermo-compressor ejector is disclosed using the preheated feed mixture as motive fluid. Syngas recycle-motive fluid molar ratios are 0.2-1.0 selected to optimize the overall configuration. The recycle introduces hydrogen and steam into the feed and elevates the feed temperature, for operating the reformer in a soot-free regime. There is some pressure drop between the raw feed steam-natural gas mixture and the reformer feed which requires the raw feed mixture to be supplied at a higher pressure but this is offset by the lower pressure drop in the process heater and other upstream and …
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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 July 25, 2003 and granted March 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2025.
- 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.