Two catalyst stage hydrocarbon cracking process
CA 2011594 C · Owner: Bellinger, Michael P. · Inventors: Nelson, Gerald V.; Pratt, Roy E.; Sayles, Scott M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a two stage catalytic cracking process a heavy cycle gas oil fraction (HCGO) nominal boiling range 600°F to 1050°F API gravity of -10° to +10° and 65 to 95 vol% aromatics is recycled to extinction between an ebullated bed hydrocracking zone and a fluidized catalytic cracking zone to yield a liquid fuel and lighter boiling range fraction as the light fraction from each zone. The catalyst in the fluidized catalytic cracking zone is maintained at a micro activity 68 to 72 while cracking a virgin gas oil to HCGO. HCGO is then mixed with vacuum residuum and hydrocracked in an ebullated bed reactor. The mid range fraction is recycled to the fluidized catalytic cracking zone. The 1000°F+ …
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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 6, 1990 and granted October 3, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 2012.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.