| 摘要 |
An axial/radial- or radial-flow catalytic reactor (1) has inlet (2) and outl et (3) ports and a bed of particulate catalyst (6) disposed as e.g. a cylinder or cone round a central region (5) communicating with one of the ports. For at least part of the height of the catalyst bed (6), the exterior surface of th e catalyst bed has a diameter less than that of the reactor thus leaving a spa ce (8) between the exterior surface of the catalyst bed and the interior walls (7) of the reactor (1). This space is filled with a particulate material presenting less resistance to flow than the catalyst particles.
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