Mixing Vessels SUPERBLEND

SUPERBLEND cleared an inconsistency between the laminar flow and turbulent flow using the 2-shaft mechanism.
Multipurpose mixer that exceeds the limitation of the vertical-type mixing vessel.

The homogeneous mixing from low viscosity to high viscosity, which was a critical issue of the mixing vessel, was attained by the 2-shaft mechanism with different impeller shapes. This mechanism always offers the optimum operations for an abrupt change of viscosity that is caused at multiproduct production or polymerization.

CHECK POINT 01 Variation of mixing time for liquid viscosity

For polymerization reaction, dissolution, or crystallization, the liquid viscosity in the vessel is changed significantly during operation. The impeller appropriate in the normal highest viscosity range is selected, but the operation time is influenced if the homogeneous distribution fails during initial operation. This influence is a point that cannot be ignored. The photo shows the decolorization status with low viscosity and high viscosity liquid. For the double helical ribbon impeller, the mixing performance for low viscosity reduces excessively.

Figure 1 shows a variation of the mixing time with low viscosity. As shown in the figure, the SUPERBLEND has the appropriate characteristics in the range from low viscosity to high viscosity.

Comparison of SUPERBLEND and DOUBLE HELICAL RIBBON

	SUPERBLEND	DOUBLE HELICAL RIBBON
Mixing conditions	Viscosity 10 poise
Rotation speed	Inner impeller： 104 rpm Outer impeller： 52 rpm	75 rpm

	SUPERBLEND	DOUBLE HELICAL RIBBON
Mixing conditions	Viscosity 5000 poise
Rotation speed	Inner impeller： 13 rpm Outer impeller： 13 rpm	15 rpm

Figure 1. Mixing time change due to fluid viscosity

When consumption power Pv(kW/m3) is fixed

CHECK POINT 02 Comparison of complete mixing time for different viscous liquids

The photo shows the status in which low-viscosity liquid is involved in high-viscosity liquid. In the SUPERBLEND, low-viscosity liquid is easily involved in high-viscosity liquid by the synergistic effect of the inner and outer impellers. Figure 2 shows the relation between the density distribution and mixing time of the involved liquid. Like this, the SUPERBLEND enables a short-time liquid dispersion in high viscosity.