Hydrocracking of asphaltene-rich heavy oil
CA 2030975 C · Owner: Alberta Oil Sands Technology And Research Authority · Inventors: Ozum, Baki; Cyr, Theodore; Lewkowicz, Leszek
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oil-soluble molybdenum compound (preferably molybdenum naphthenate) is mixed with a heavy oil fraction containing asphaltenes and sulfur. Mixing is conducted at an elevated temperature (150-300°C), whereby the Mo is dispersed and preferentially becomes associated with the asphaltenes in a colloidal form. The product is then further heated to hydrocracking temperature. Hydrocracking is conducted with sufficient hydrogen flow to ensure a hydrogen flow/liquid flow ratio greater than 10, a liquid Peclet No. less than 0.5 and a gas Peclet No. greater than 3Ø At these conditions the liquid is mixed in the reactor and light ends are stripped as they are produced. It is found that asphaltene …
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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 November 28, 1990 and granted August 18, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 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.