Mixing Vessels MAXBLEND

Providing innovative mixing features generated by the unique impeller shape.

MAXBLEND (which generates ideal flow that cannot be realized with other impeller models) consists of the bottom paddle and the upper grid.

CHECK POINT 01 Complete mixing in short time

The homogeneous mixing in short time is enabled by the ideal flow pattern as compared with the previous impeller models.
The graphs on the right show on the right the relationship between the mixing power and complete mixing time.

If the mixing power is as shown on the right, the homogeneous mixing is enabled in short time. These graphs indicate the excellent mixing characteristics of MAXBLEND that requires only a lower power to obtain the mixing status of the same level.

Impeller for low viscosity

Impeller for high viscosity

Comparison of mixing time

CHECK POINT 02 Applicable wide viscosity range

As compared with the general impeller models, MAXBLEND has stable mixing performance for a change of the viscosity, therefore, it is optimum for operations with the viscosity changed or a production of many products that have the different viscosity for each product.

Applied viscosity range

CHECK POINT 03 Stable flowing characteristics

MAXBLEND provides a high heat transfer coefficient by applying the strong and homogeneous circulating flow in the wall surface area, and also resolves an unstable heat transfer or unhomogeneous temperature in the vessel wall height direction, which are problems with the conventional multi-stage impeller models.

Distribution of tank wall mass transfer coefficient

CHECK POINT 04 Excellent heat transfer characteristics

The homogenization of the temperature in the vessel is easily attained in a short time by a combination of the excellent heat transfer characteristics and mixing characteristics.

As shown in the graphs, MAXBLEND can hold high heat transfer characteristics in the wide Reynolds number range.

Relationship of Reynolds number and heat transfer coefficient

CHECK POINT 05 Stable performance not affected by a change of the liquid level

In a multistage impeller, if the liquid level is changed, it leads to a imbalance in the fluid flow derived by each impellers, so it is not appropriate for operations that lead a change of the liquid level.
MAXBLEND, consists of impellers arranged successively in the height direction, provides stable performance that is not affected by a change of the liquid level. It is optimum for operations that cause a change of the liquid level, for example, material dripping, additional charge, and product pull-out processing.
The movie below show the homogeneous dispersion and floating substance involvement caused by a change of the liquid level, which are compared between MAXBLEND and general impeller.

Comparison of suspension characteristics in liquid surface
change conditions

Mixing conditions：

MAXBLEND: N=130rpm　Pv=0.5kW/m3

2-stage Turbin: N=255rpm　Pv=0.5kW/m3

Fluid: Water　Solid: Resin　　0.5wt％

CHECK POINT 06 Homogeneous solid suspension

The graphs show the particle size distribution, which has obtained after 18 hours operation at the just-suspension power input.

Solid particles can be floated evenly in the entire vessel by a low rotation and low power using a strong discharge flow from the bottom of the vessel.
No local shearing area is required near the impeller dislike the paddle impeller, minimizing the physical crushing of solid particles.

Particle size distribution after 18 hours operation

CHECK POINT 07 Few fouling

The stagnant are resolved, and the uniform shear force is ensured in the vessel. MAXBLEND generates homogeneous product characteristics and inhibits the occurrence of gelling stuffs or aggregates, excessively reducing the amount of fouling on each part in the vessel.

Example of rubber solution polymerization

CHECK POINT 08 Simple control of crystal size

As compared with the paddle impeller, uniform shear are applied to the entire fluid in the vessel. Therefore, the particle size distribution by suspension polymerization or crystallization is maintained sharply. Furthermore, the crystal size control can be attained easily by a speed variation. The graph shows the comparison with the paddle impeller.

Produced particle size distribution

CHECK POINT 09 Excellent gas-absorption characteristics

MAXBLEND, which has the excellent gas involvement performance from free liquid surface, offers the excessive reduction of the reaction time and the enhancement of the final reaction rate as compared with the previous impeller model.