A process for the removal of h2s and mercaptans from a gas stream
CA 2522151 C · Owner: Lammers, Josephus Norbertus Johannes Jacobus · Inventors: Wernersson, Clas Ingemar; Lammers, Josephus Norbertus Johannes Jacobus; Kijlstra, Wiebe Sjoerd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for the removal of H2S.and mercaptans from , a gas stream comprising these compounds which process comprises the steps of: (a) removing H2S from the gas stream by contacting the gas stream in a H2Sremoval zone with a first aqueous alkaline washing liquid to obtain a H2Sdepleted gas stream and a sulphide-comprising aqueous stream; (b) removing mercaptans from the H2S-depleted gas stream obtained in step (a) by contacting the H2S-depleted gas stream in a mercaptan-removal zone with a second aqueous alkaline washing liquid to obtain a mercaptan-depleted gas stream and an thiolate- comprising aqueous stream; (c) contacting the combined aqueous streams …
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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 April 13, 2004 and granted August 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 13, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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