Energy efficient aromatic extraction process
CA 1312571 C · Owner: Uop · Inventors: Forte, Paulino
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The process for the dearomatization of a mixed hydrocarbon feed which comprises the following steps:, (a) contacting said feed in an extraction zone at a temperature of at least about 150°C with an aromatic extraction solvent to provide a solvent phase containing aromatic hydrocarbons and a raffinate phase containing nonaromatic hydrocarbons;, (b) cooling said solvent and raffinate phases;, (c) introducing said cooled solvent phase to a separation zone and introducing therewith an effective amount of an anti-solvent for said aromatic hydrocarbons in said mixed extraction solvent to provide an extract phase containing aromatic hydrocarbons and a solvent phase containing mixed extraction …
Read the whole patent
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 January 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 2010.
- 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.