Mitsui Mining Co., Ltd.

Mitsui Miike Engineering Corp.

Kuninori Furuyama

Yoshiro Ito

In a dry moving bed type adsorption tower using a granular adsorbent, for example, for removing SO.sub.x and NO.sub.x from waste gases, the granular adsorbent entering the adsorption tower is previously rinsed with a gas in a feed pipe for the adsorbent, thereby avoiding the need to install a dust collector at the outlet of the adsorption tower.

Dust pre-removal method in a dry moving bed type adsorption tower

A reactor of the moving bed type wherein a granular material is packed and held by a louver structure and moved downward and brought into contact with a gas passing through the louver, is improved so as to avoid both accumulation of dust on the louver part at the gas inlet side and excessive rising of the pressure loss. The improvement consists of providing a sub-louver comprising louver units each having a cross section of reverse V-type, including triangular type, inside a main louver for packing and holding the granular material in such a manner that the sub-louver is aligned in parallel with the main louver, the louver unit of the sub-louver has a vertex positioned at an intermediate height between the louver boards of the main louver, one side of the V-type of the sub-louver is directed toward the inside of the main louver in a reverse gradient to the main louver, the other side of the V-type is directed downward in the vertical or inclined direction from the vertex, and the lower end of each of the sides does not contact the vertex of the next lower sub-louver unit.

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Tochigi, Japan

Kuninori Furuyama