Invention Grant
US08173852B1 Methods and apparatuses for producing styrene from ethylbenzene 有权
乙苯生产苯乙烯的方法和装置

  • Patent Title: Methods and apparatuses for producing styrene from ethylbenzene
  • Patent Title (中): 乙苯生产苯乙烯的方法和装置
  • Application No.: US13109584
    Application Date: 2011-05-17
  • Publication No.: US08173852B1
    Publication Date: 2012-05-08
  • Inventor: Wugeng LiangJames A. Johnson
  • Applicant: Wugeng LiangJames A. Johnson
  • Applicant Address: US IL Des Plaines
  • Assignee: UOP LLC
  • Current Assignee: UOP LLC
  • Current Assignee Address: US IL Des Plaines
  • Agent Mark R Willis
  • Main IPC: C07C5/327
  • IPC: C07C5/327
Methods and apparatuses for producing styrene from ethylbenzene
Abstract:
Embodiments of methods and apparatuses for producing styrene are provided. The method comprises the steps of introducing ethylbenzene to a first dehydrogenation reactor containing a first high activity dehydrogenation catalyst at a first predetermined inlet temperature to form a first intermediate effluent stream that comprises styrene, ethylbenzene, and hydrogen. Oxygen is added to the first intermediate effluent stream to form a first oxygenated intermediate effluent stream. The first oxygenated intermediate effluent stream is introduced to a first oxidation-reheat dehydrogenation reactor at a second predetermined inlet temperature of about 530° C. or less to form styrene. The first oxidation-reheat dehydrogenation reactor contains a first oxidation catalyst and a second high activity dehydrogenation catalyst.
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