C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/719.3, 260/7
C07C 11/09 (2006.01)
Patent
CA 1120064
Abstract of the Disclosure A process for recovering isobutylene from a hydrocarbon C4 fraction according to the present invention involves the stags of treatment of said hydrocarbon C4 fraction with wa- ter at a temperature within the range of from 70 to 100°C under a pressure of from 16 to 23 atm in the presence of a shaped ionite catalyst and the stage of dehydration of the resulting tart.butyl alcohol to isobutylene at a temperature within the range of from 80 to 110°C under a pressure of up to 3 atm, in the presence of said catalyst. In accordance with the present invention, said treatment of the hydrocar- bon C4 fraction with water is effected under the conditions of counter-current contact between the reactants at a speed of water supply of from 5 to 30 m/g hr and a speed of move- ment of the hydrocarbon C4 fraction in the catalyst bed of from 0.001 to 0.020 m/sec.
324665
Chaplits Donat N.
Swabey Ogilvy Renault
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