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Expired Canadian patentCanada

Co2 recovery system and method

CA 2689784 C · Owner: Mitsubishi Heavy Industries Engineering, Ltd. · Inventors: Iijima, Masaki; Kamijo, Takashi; Mimura, Tomio

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Abstract From the Canadian patent

The present invention relates to a CO2 recover system which has improved energy efficiency in comparison with other systems. An absorption tower , receives CO2-containing gas and CO2-absorbing solution and produces a CO2 rich solution. A regeneration tower receives the CO2 rich solution and produces lean , solution from the rich solution. Lean-solution is extracted from the bottom of the , regeneration tower and sent to the absorption tower. A heat exchanger is provided to , heat semi-lean solution in the middle portion of the regeneration tower with heat from , the lean solution to provide energy by using the residual heat of steam condensate.

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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 March 14, 2005 and granted March 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 14, 2005
GrantedMarch 13, 2012
Term endedMarch 14, 2025
Patent numberCA 2689784 C
Classification (IPC)B01D53/14 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMarch 14, 2005Patent grantedMarch 13, 2012Term endedMarch 14, 2025

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.