Multiple-stage hydrogen-donor coal liquefaction process
CA 1097241 A · Owner: Exxon Research And Engineering Company · Inventors: Vernon, Lonnie W.; Maa, Peter S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
U.S. 716,036, ABSTRACT OF THE DISCLOSURE An increased yield of hydrogenated liquid product is obtained by treating feed coal with a hydrogen-donor solvent and hydrogen-containing gas in a first coal liquefaction reactor to produce a liquefaction effluent comprising a vaporous stream and a liquid stream consisting of a low molecular weight liquid fraction containing some mineral matter. A heavy bottoms stream containing less than about 50 weight percent of the low molecular weight liquid fraction based on the weight of the high molecular weight liquid fraction is treated with additional fresh hydrogen-donor solvent and hydrogen-containing gas in a second coal liquefaction reactor from which …
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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 March 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 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.