Conditions of operation during coking which leads to higher yields of valuable liquid products
CA 2217889 A1 · Owner: Tollefson, Eric L. · Inventors: Tollefson, Eric L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A 2-inch diameter, fluid bed coker using a 21 cm bed of Syncrude fluid coke was adapted to feed bitumen, bitumen-in-water emulsions plus steam and nitrogen. Initially feeding was through a 1/8-inch tube incorporated into a steam nozzle. This was later modified to provide feeding of the bitumen plus steam through a side port nozzle at various depths below the surface of the fluid bed. The reaction system was constructed for once-through operation without recycle of heavy ends. Product liquids were analyzed for microcarbon residue (MCR) and so that calculations could be made to determine the extent of "by passing" of the feed on its passage through the reactor. As a basis for comparison to …
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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 October 8, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2019.
- 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.