Manufacturing Process of Activated Carbon from Asphalt (VIII):Formation of Granulated Char and Recyclization of Powdered Char

概要

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The influence of the position of stirrer fitted and stirring rate on the size distribution of produced char and content of granulated char in it was investigated to clarify the conditions for producing granulated char for activation. And then, the influence of the kind of solvent and its amount, the amount of oleum, reaction temperature etc. on the granulation of char in progress of reaction was investigatet under a constant physical condition.<BR>Also the recyclization of powdered char recovered in the process of production was investigated in this report.<BR>The size distribution of char was varied with the position of stirrer fitted and became smaller when the distance between stirrer and reactor became narrower. It was recognized that the size distribution of char was influenced considerably by stirring rate compared with the position of stirrer fitted and that the optimum stirring rate for granulation of char existed depending upon the kind of solvent and its amount.<BR>The size distribution of char obtained from the sulfonation of asphalt along with powdered char recovered in the process of production varied with the blending rate of powdered char and had a tendency to transfer in the direction of smaller size in case of larger blending rate and in case of using smaller powdered char at constant blending rate.
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