Invention Grant
- 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
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Application No.: US13109584Application Date: 2011-05-17
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Publication No.: US08173852B1Publication Date: 2012-05-08
- Inventor: Wugeng Liang , James A. Johnson
- Applicant: Wugeng Liang , James 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

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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