| abstract |
(57) [Summary] [Purpose] The combined special blade with excellent uniform mixing characteristics of the stirring tank It was found that not only the uniform mixing property but also the process improvement effects such as product properties, stability and reduction of by-products in the actual stirring operation, and the conventional paddle was adopted by the stirring device which adopted this combined special blade. (EN) Provided is a stirring treatment method which makes it possible to obtain various products having properties that cannot be obtained by blades and eliminates operational problems such as deposits in a tank. [Structure] A rotary shaft that can be rotated from the outside of the vertical cylindrical stirring tank is arranged at the center of the vertical cylindrical stirring tank, and a flat bottom paddle is mounted below the shaft with a slight gap from the bottom wall surface of the stirring tank. Using a stirrer equipped with a lattice blade consisting of vertical and horizontal members on the upper side of the bottom paddle, perform processing such as mixing, dissolution, crystallization, polycondensation reaction of the fluid to be agitated. The particle diameter, droplet diameter and other concentration of the fluid to be stirred are controlled. |