Process for treating a gas stream to selectively separate acid gases therefrom
CA 2177449 C · Owner: Mobil Oil Corporation · Inventors: Stang, Don August; Marjanovich, Barry Steve
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A treatment method for removing acid gases by contacting a sour gas stream with a solvent (e.g. an organic amine) which absorbs H2S in preference to CO2 and hydrocarbons. The rich solvent is then regenerated by selectively separating the absorbed hydrocarbons in a first flash tank a large portion of the CO2 in a high-temperature low-pressure second flash tank, and substantially all of the remaining acid gases in a high-temperature low- pressure stripper. The regenerated solvent is recycled and the recovered acid gases; are processed to recover sulphur from the H2S. The CO2 recovered from the second tank is contacted with a second solvent to provide high-quality CO2.
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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 May 27, 1996 and granted April 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2018.
- 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.