| 摘要 |
A hollow, saddle-shaped packing structure 14 includes a pair of porous outer and inner semi-cylindrical side walls 22, 34 that are spaced from one another to define an interior space 40, and a particulate catalyst component 20 retained in the interior space between the side walls. The packing structure may be formed by a pair of saddle-shaped shell elements 16, 18, each of which presents one of the side walls and a pair of radially opposed laterally extending flanges 26, 38. The flanges are connected together by tabs 30, 32, welding, or the like, and the interior space between axially spaced marginal edges 24, 36 of the outer and inner shell elements is closed off to retain the particulate catalyst component between the side walls.
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