| 摘要 |
<p>A process of preparing a vinyl aromatic compound, such as styrene. The proce ss involves fluidizing a dehydrogenation catalyst in a single shell fluidized b ed reactor containing a reaction zone and a regeneration zone; contacting an alkyl aromatic compound, such as ethylbenzene, with the dehydrogenation catalyst in the dehydrogenation zone so as to produce the vinyl aromatic compound, such as styrene; and regenerating the catalyst in situ by contacti ng steam with the deactivated catalyst in the regeneration zone. A fluidized be d reactor is described, characterized by a freeboard zone, a reaction zone, an d a catalyst regeneration zone, all within a single shell.</p> |
