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SOLUTION
The company has a group of experienced mechanical engineers, electrical engineers and senior technicians. We can solve difficult mixing problems for customers and provide high-quality services.
Stirring Purpose
Mixing / Homogeneity
The purpose of every mixing process is to achieve the homogeneity required by the process throughout the entire contained volume. In homogenization processes, it is important to minimize concentration and temperature differences caused by product addition, mass transfer, chemical reactions, or heat transfer. This mixing action occurs in both single-phase and multi-phase systems.
In order to reduce energy consumption or increase productivity in homogenization processes, it is necessary to clarify whether the mixing time is a limiting factor. For low-viscosity liquids, mixing times are on the order of minutes and are therefore often not critical.
The situation is different for highly viscous media. Here, the rheology of the medium determines the mixing process. Special, mostly wall-mounted stirring systems are required here to achieve process-suitable mixing times.
What should be considered?
Viscosity/rheology of the medium
Geometry of the container
Power input of the stirring system, especially during scale-up
Solid mixing
When mixing powders, especially bulk materials, determining the mixing quality plays a central role. Knowledge of statistical principles can be used to obtain help for practical applications, which ensures an effective procedure for determining mixing quality. In this context, scaling up the mixing time from laboratory scale to production scale is also very important.
What should be considered?
Grain/particle size distribution and crystal shape
Moisture content and flow properties
Avoid contamination
Solid-liquid suspension
A suspension is understood as a non-uniform mixture of substances, which consists of a liquid and solids distributed therein. Suspension is the process of combining these two substances. Suspension stirrers can be used for operations with different purposes. For example, for the dissolution of solids, fluidization of the solids near the bottom is sufficient, while in continuous processes, such as in crystallization or ore leaching, the highest demands are placed on the homogeneity of the suspension.
What should be considered?
Process requirements - complete or uniform suspension
Difference in density fluid - solid
Particle size of the solid
Liquid-liquid dispersion
Liquid-liquid dispersion is understood as a mixture of two or more immiscible liquids. Such mixtures are produced and used for many industrial purposes. In the chemical industry, liquids are often temporarily mixed with each other to specifically control extraction or reactions. Long-term stable dispersions are also produced, for example in the pharmaceutical, cosmetic or food industry. Such long-term stable liquid dispersions are called emulsions.
What should be considered?
Process requirements - temporary or stable emulsion
Density difference/interfacial tension of the liquid phases
Energy input from the stirring system
Gas-liquid dispersion
The aeration of liquids is of high importance in the chemical, pharmaceutical industry and biotechnology. The aim here is to achieve the maximum possible mass transfer between the dispersed gas and the liquid. Stirred reactors with aeration systems are used for chemical syntheses such as hydrogenation or oxidation, as well as fermentations.
What should be considered?
Increased throughput and selectivity
Same conversion rate at lower pressure and/or temperature
Savings in total cost of ownership
Drying
Drying is a fundamental process in process engineering. Thermal drying of wet solids is a combined heat and mass transfer process with the aim of obtaining a dry end product by removing moisture. For thermal drying of moist solids under vacuum, vertical apparatuses with mixers are ideal. When designing these dryers, the drying time from laboratory to production scale is of particular interest.
What should be considered?
Grain/particle size distribution and crystal shape
Moisture content and flow behavior
Avoid contamination
Heat transfer
In many stirring processes, heat transfer is one of the basic requirements that the stirring elements, the geometry of the boiler, and the cooling and heating elements must meet. Typical tasks are: maintaining a constant product temperature in exothermic or endothermic reactions, or setting a certain product temperature by heating or cooling within a predetermined time.
What should be considered?
Viscosity/rheology of the medium to be heated or cooled
Steady-state or unsteady-state process
Available exchange area, especially during scale-up
Address: No. 9, Xinyuan Road, Qianzhou Industrial Park, Wuxi City
Tel: +86-510-83383966
Tel: +86-13706183972 Manager Xu
Tel: +86-514-84380409
Email: topchina2003@top-mixer.com
Email: Rose.xu@top-mixer.com
