How to choose a stainless steel reactor stirrer?

Stainless steel reaction kettle is the core equipment for realizing chemical reactions and physical treatments in modern industry, widely used in various fields such as chemical engineering, pharmaceuticals, food, new materials, etc. It is mainly used to complete key processes such as material mixing, reaction, heating, cooling, evaporation, polymerization, extraction, etc.

The selection of stainless steel reactor agitator should prioritize matching based on three core factors: material viscosity, process purpose, and equipment compatibility, to ensure mixing efficiency, mass and heat transfer effects, and long-term operational stability. The following is a systematic selection guide:

The rheological properties of materials are crucial in determining the form of the mixer, directly affecting the flow mode and shear strength.

Low viscosity liquids are selected using turbine and propeller systems, suitable for homogeneous mixing of aqueous solutions, solvents, and low concentration reaction solutions.

Medium viscosity materials are of anchor type, frame type and inclined paddle type. Applicable scenarios: colloid, lotion and syrup materials.

For high viscosity or solid containing materials, spiral belt, screw, and scraping wall are suitable for scenarios such as polymer melt, paste like materials, and high concentration slurry mixing and heat transfer.

Requirements for material and structure matching working conditions

Material selection

304 stainless steel: suitable for weak acid and alkali environments, with high cost-effectiveness

316L stainless steel: containing molybdenum, resistant to chloride ion corrosion, suitable for pharmaceuticals, food, and salt containing systems

Special corrosive environment: optional Hastelloy coating or enamel glass stirrer

Sealing method

Mechanical seal: suitable for high-pressure and high-speed scenarios, with low leakage rate and long maintenance cycle

Packing seal: Low cost, but requires regular replacement, suitable for normal pressure or low-risk working conditions

Combination mixing design

For complex systems such as gas liquid solid three-phase reactions, the following methods can be used:

Upper turbine type (gas dispersion)

Lower layer spiral belt type (driven by high viscosity materials)

Realize multiphase collaborative mixing