Neutralization box, settling box and flocculation box (commonly known as triple box) is one of the main body of the equipment in FGD. In FGD industry now, agitator selection is depend on the experiment and practical engineering experience, this leads to the market on the joint box agitator selection is multifarious, good and evil people mixed up. The selection of agitator cannot be strictly determined by the selection of the original mixer of the same size. After all, different mixing materials have different mixing purposes, including mixing, reaction, mass transfer, heat transfer, etc. Therefore, in the case of determining the specific material parameters and size of the 3 cases, the parts in this paper, 3 cases of mixer and the internal components selection and optimization, it includes the shape of the stirring blade, the diameter of the blade, the speed, and the size of the stirring shaft, etc. Based on the analysis and comparison of the existing performance, the blender suitable for 5 types of common specifications of the triple box is determined.
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