Importance

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Abstract

The first step, wherein a catalyst is built up in predetermined positions by a catalyst loading means disposed inside a reactor to form said plurality of built-up sections only by said predetermined height, and the second step, wherein the position or direction for releasing the catalyst of said loading means is changed in accordance with the height of the charged catalyst, are alternately repeated to fill said reactor with a predetermined quantity of said catalyst. In the first step, the loading density of the catalyst to be charged into an area, which is not in contact with a cylindrical side wall, is reduced or a catalyst having a larger particle diameter than that of the catalyst to be charged into an area, which is in contact with the cylindrical side wall, is used for the catalyst to be charged into the area, which is not in contact with the cylindrical side wall, or other similar approach is taken in order to securely reduce the flow resistance of the area which is not in contact with the cylindrical side wall and to make the flow resistance of the catalyst charged in the area, which is not in contact with the side wall of the reactor, nearly equal to the flow resistance of the catalyst charged in the area which is in contact with the side wall of the reactor, thereby preventing the deflected-flow phenomenon, wherein a fluid flows always deflecting toward the side wall of said reactor, from occurring.

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First Claim