The glass reactor vessel is widely used in the chemical synthesis test. Because the test is dangerous, it is necessary to carry out the test of the lab glass reactor before using the glass reactor. How should we choose the glass reactor? What about the blender?

 

There are many classification methods for the agitator, mainly from the following.

 

1. According to the blade stirring structure: it is divided into flat leaf, oblique (folded) leaf, curved leaf, spiral surface type agitator. Both the slurry and the turbine agitator have a flat blade and a slanted blade structure; the propeller, screw and ribbon blades have a spiral surface structure. According to the installation requirements, it can be divided into a whole type and a split type, which is convenient for fixing the agitator directly to the stirring shaft without removing other components such as the coupling.

Stirring Rod
 

2. According to the use of the agitator: it is divided into a low viscosity fluid agitator and a high viscosity fluid agitator. The agitators for low-viscosity fluids are: propulsion, slurry, open turbine, disc turbine, Bruma gold, plate and frame, and three-leaf. The agitators for high viscosity fluids are: anchor, frame, serrated disc, propeller, ribbon and the like.

 

3. According to the fluid flow pattern: divided into axial flow agitator and radial flow agitator. In some applications, when the agitator is in operation, the fluid produces an axial flow and a radial flow, which is called a mixed flow agitator. The propeller stirrer is representative of the axial flow type, the straight leaf disc turbine agitator is representative of the radial flow type, and the inclined blade turbine agitator is representative of the mixed flow type.

 

A good selection method for the glass reactor stirrer preferably has two conditions. One is that the selection result is reasonable, and the other is that the selection method is simple, and the two points are often difficult to have at the same time.

 

Since the viscosity of the liquid has a great influence on the stirring state, it is a basic method to select the viscosity according to the viscosity of the stirring medium. Several typical agitators have different ranges of use depending on the viscosity. The various agitators with increasing viscosity are in the order of propulsion, turbine, slurry, anchor and ribbon. Here, the push type is finely divided, and low-speed, small-capacity is proposed for large-capacity liquids. Use high speed for liquids. This selection chart does not absolutely limit the use of the type of slurry. In fact, the range of use of the various types of paste is overlapping.

 

According to the purpose of the agitation process and the flow state caused by the agitator, the slurry type to which the process is applied is judged, which is a relatively suitable method.

 

The recommended slurry type is divided into two types: the rapid type and the slow type. The former operates in a turbulent state and the latter operates in a laminar flow state. When selecting, the slurry type and the baffle condition are determined according to the purpose of mixing and the flow state, and the flow state is determined by the viscosity of the stirring medium.