C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/719.3
C07C 11/08 (2006.01) C07C 7/177 (2006.01)
Patent
CA 1164481
ABSTRACT OF THE DISCLOSURE: A process for isolating and recovering butene-1 of high purity at a high yield is provided. The process comprises the steps of continuously passing a butane-butene fraction containing 0.1 to 15 wt% of isobutylene and 10 to 50 wt% of butene-1 through a first reactor packed with a strongly acidic cation exchange resin having an average particle size of from 0.2 to 10 mm at a temperature of from 30° to 100°C and at a space velocity of liquid of from 0.1 to 50 hr-1 under a pressure of from 1 to 50 atm., dividing the output mixture flowing out of said first reactor into two flows at a division ratio in flow rate of 1 ~ 15 : 1, recirculating the first flow having the flow rate of 1 ~ 15 into said first reactor packed with said cation exchange resin, passing the second flow having the flow rate of 1 through a second reactor packed with a strongly acidic cation exchange resin under the conditions similar to those of the first reactor, distillating the output flow from said second reactor to separate the same into a heavy hydrocarbon fraction containing oligomers of isobutylene and a light hydrocarbon fraction containing butane and butene, and rectifying said light hydrocarbon fraction to isolate butene-1 from other C4-hydrocarbons.
391809
Amari Takaaki
Imaizumi Masao
Oguchi Yutaka
Takezono Tetsuya
Marks & Clerk
Nippon Oil Co. Ltd.
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