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Expired Canadian patentCanada

Method and apparatus for spent catalyst stripping for fluidized catalytic cracking system

CA 1205034 A · Owner: Chevron Research And Technology Company · Inventors: Krug, Russell R.

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Abstract From the Canadian patent

A method of and apparatus for increasing the overall efficiency of fluidized catalytic cracking (FCC) is disclosed. Separated or spent cracking catalyst after reaction with hydrocarbonaceous material is maintained at elevated temperatures for an extended period of time so as to form additional gaseous and liquid hydrocarbon products before the catalyst is returned to a regenerator for removal of residual hydrocarbon, called "coke" by combustion in a stream of air or oxygen-enriched air. In a preferred form the spent catalyst is held at such elevated temperature for from 1 to 30 minutes. This rate is from 6 to 1800 times the reaction time of The catalyst and hydrocarbonaceous mixture in an …

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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

  • Granted May 27, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 15, 1982
GrantedMay 27, 1986
Term endedMay 27, 2003
Patent numberCA 1205034 A
Classification (IPC)B01J38/06

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedNov 15, 1982Patent grantedMay 27, 1986Term endedMay 27, 2003

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