The mechanically stirred reactor is suitable for the reaction process of various physical properties and various operating conditions, and is widely used in synthetic materials, synthetic fibers, synthetic rubber, medicine, fertilizers, dyes, coatings, food, metallurgy, wastewater treatment and other industries. The stirred reactor consists of two parts: a stirred vessel and a mixer. The stirring vessel includes simplified form, heat exchange elements and internal components. The agitator, agitating shaft, and its sealing device, and the transmission system are the agitator. The mixing device is composed of an electric motor, a mixing shaft connected to the output shaft with a reducer, and an impeller mounted on the mixing shaft. The reducer body is connected to the mixing container through a bracket or a bottom plate. When there is pressure inside the container, there should be a sealing device when the stirring shaft enters the container through the bottom plate, usually stuffing box or mechanical seal. Commonly used motors and seals are purchased from outside, and impellers are customized. The stirring effect of the impeller is shown as pumping and turbine, generating fluid velocity and fluid shear. The fluid velocity causes the reflux in the container, the media translocation, prevents the precipitation of solids and produces scouring of the heat exchange tube bundle. Shear is a kind of Micro-mixing in large reflux can break up bubbles or insoluble droplets, resulting in uniformity. According to the shape of the agitator impeller, it can be divided into straight blade type, open turbine type, propeller type, disc turbine type, anchor type, ribbon type, spiral type, etc. According to the viscosity of the mixing material, it can be divided into low viscosity and high viscosity agitators. Common types of low-viscosity liquid agitators are generally: three-blade propeller, folding blades, 6-blade turbine type, etc. Commonly used types of medium and high viscosity agitators are: anchor type, worm impeller type, double spiral ribbon impeller type, etc. Stirring accelerates heat and mass transfer, and is widely used in chemical equipment. The role of the chemical agitator makes the liquid in the chemical production fully mixed. In the chemical production process, the commonly used agitators include paddle agitators, turbine agitators, propeller agitators, anchor agitators, frame agitators, ribbon agitators, etc. Due to differences in structure and performance, chemical agitators can be adapted to different working conditions in various parts of chemical production. Paddle agitators can be divided into two types: straight blades and folded blades. The structure and processing of this type of agitator are relatively simple.
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