会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 11. 发明公开
    • INTEGRATED C3-C4 HYDROCARBON DEHYDROGENATION PROCESS
    • EP3699163A1
    • 2020-08-26
    • EP20161028.4
    • 2016-03-07
    • Dow Global Technologies LLC
    • PRETZ, Matthew T.
    • C07C5/333C07C11/06C07C11/08C07C11/09C07C11/167B01J38/02B01J38/12B01J38/14B01J23/62
    • The invention relates to an integrated process for producing C3-C4 olefins or C3-C4 di-olefins comprising the steps of:
      (1)
      (a) contacting, in a fluidized dehydrogenation reactor,
      (i) a C3-C4 hydrocarbon feed and
      (ii) a catalyst feed comprising a catalyst;
      under conditions such that a step (1)(a) product mixture, comprising a C3-C4 target olefin or di-olefin, hydrogen and unreacted C3-C4 hydrocarbon feed, is formed; and
      the catalyst has coke deposited thereon and is at least partially deactivated such that it forms an at least partially deactivated catalyst; and
      (b) transferring the step (1)(a) product mixture and the at least partially deactivated catalyst from the fluidized dehydrogenation reactor to a cyclonic separation system, and
      under conditions such that the step (1)(a) product mixture is converted to form a step (1)(b) product mixture; and
      thereafter substantially separating the step (1)(b) product mixture and the at least partially deactivated catalyst from each other;
      (c) transferring at least a portion of the at least partially deactivated catalyst to a regenerator vessel and heating the at least partially deactivated catalyst therein to a combustion temperature of from about 660 °C to about 850 °C in order to combust the coke deposited on the at least partially deactivated catalyst therein,
      the heating forming a heated, further deactivated catalyst which has an activity for dehydrogenating the C3-C4 hydrocarbon feed that is less than that of the at least partially deactivated catalyst, and,
      (d) subjecting the heated, further deactivated catalyst to a conditioning step, comprising maintaining the heated, further deactivated catalyst at a temperature of at least 660 °C under a flow of an oxygen-containing gas for more than 2 minutes,
      to form an oxygen-containing, at least partially reactivated catalyst that has an activity for dehydrogenating the C3-C4 hydrocarbon feed that is greater than that of the at least partially deactivated catalyst; and
      (e) transferring the at least partially reactivated catalyst back to the fluidized dehydrogenation reactor.