Method and apparatus for pyrolyzing oil shale
CA 1115227 A · Owner: Tosco Corporation · Inventors: Hall, Robert N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
When oil shale of the type found in the Green River formation of the Western United States is pyrolyzed at around 900°F the kerogen, or organic portion of the shale decomposes to gas and oil leaving an inorganic residue referred to as spent shale containing around 4 per cent carbon. When this carbon is combusted the burned residue is then referred to as shale ash. Many problems are encountered when attempting to recover the heat produced by combusting the spent shale. The present invention relates to a method and apparatus for the efficient and economic recovery of the heat produced by spent shale combustion.
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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 December 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 1998.
- 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.