| 摘要 |
<p>A container body 11 contains a plurality of catalyst units 12, each including catalyst elements 22 and a housing frame body 21 that contains the elements and is square in cross section. In the cross section of the container body, a horizontally and vertically symmetric imaginary octagon S is assumed to be inscribed in the container body, and the imaginary octagon is assumed to contain a plurality of imaginary rectangular sections and a plurality of imaginary triangular sections between the imaginary rectangular sections and the outline of the imaginary octagon, and the housing frame bodies for the catalyst elements are formed with cross sections coinciding with the sections.</p> |
