Process of regenerating a high-boiling scrubbing solution which contains co2 and h2s
CA 2017308 C · Owner: Fritzsche, Hans-Joachim · Inventors: Grunewald, Gerhard; Fritzsche, Hans-Joachim; Kriebel, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The scrubbing solution has a boiling point above 100°C under atmospheric pressure and is used for gas purification at temperatures from 5 to 70 °C and is thus laden with at least CO2 and H2S. For regeneration the laden scrubbing solution under a pressure of at least 2 bars and at a temperature of at least 60°C is supplied to an expansion zone and is expanded therein A flashed-off, gas which is rich in H2S is withdrawn from the expansion zone. The scrubbing solution from the expansion zone is subjected to a hot regeneration, by which the scrubbing solution at a temperature below its boiling temperature is stripped with an inert gas so that its residual loading is substantially removed. Mixed …
Read the whole patent
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 22, 1990 and granted August 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 2012.
- 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.