Description

4kW high efficient powder liquid incorporation high shear mixer

4kW powder liquid inline high shea mixer
The powder is sucked in by the strong negative pressure created by the mixer head. Immediately after contact with the liquid phase the powders are instantly wetted and thoroughly dispersed.

This process is actually completed before the powder is fully hydrated.

Due to the extremely short time shear forces are applied, the process is a very gentle one. In most cases a single pass operation ensures that even when processing extremely shear-sensitive thickeners and gelling agents, the highest viscosities are achieved.

Keeping the dispersing capabilities and efficient pumping separate makes the dispersing reproducible and efficient

The power introduced via the head is used only to a limited degree to creating a pumping pressure. The main part of it is used to effectively disperse or wet out, the dry matter in the liquid phase.

In combination with the appropriate pump selected for the relevant liquid phase, an extremely high pumping efficiency is achieved.

For low viscosity products centrifugal pumps are used, for intermediate and high viscosity products positive displacement pumps are recommended.

In the high viscosity range, 80 % or more of the energy can be saved in comparison to conventional processes.


This means; NO heating of the product due to mechanical energy input above the minimum during dispersion.

Reproducable results are normally achieved in a single pass.

The product is subject to a homogeneous, uniform dispersing or shearing effect as it passes through the reactor head. There is no portion of the flow required to bypass the shear head for pumping the liquid in a loop.

 

Using the  for the incorporation of Carbopol®

The special rotor/stator dispersion reactor effects the “STRETCHING”® of the molecular chain, which can result in a considerable increase in viscosity. The negative pressure created in the dispersing head means a consistent powder intake without the introduction of additional air. The end product is consistently reproducible.

Because the powder / liquid ratio is adjustable, concentrations ranging from 0.5% to 10% can be achieved. The production of a concentrate for later dilution may save time and energy in a later step of the process.

Valuable, ingredients such as liposomes and other shear or heat sensitive products, and encapsulated raw materials can be processed efficiently and without degradation.

The challenge
The use of high molecular weight, cross-linked hydrophilic polymers provides many advantages and enhancements such as efficient gel formation or thickening effect and pseudo plastic properties as well as the stabilisation of suspensions and emulsions. The drawback, however, is that the inclusion of these polymers into the formulation causes considerable difficulties during mixing and dispersing.

The difficulty in dispersing such fine and electrostatically charged powders is their tendency to quickly form agglomerates, as their outer skin hydrates instantly.

The resulting tough outer skin may prevent completion of the hydration process creating an agglomeration of particles which are wetted on the outside only. These appear, at best, as small transparent ‘fisheyes’ but more generally as lumps of varying sizes, even after longer mixing and swelling stages.

Should an attempt be made to achieve a homogeneous dispersion by smoothing out these lumps through high shear methods, the polymer molecular chain may be damaged. This will affect the end result by reducing the desired rheological characteristics of the finished product, at least partially.

Compromise during dispersing may therefore lead to a reduced viscosity of the final product and adversely affect the reproducibility of the entire process.

The Solution
YTRON-ZC enables quick, reproducible and problem-free dispersion of „difficult to wet” gels, gums and thickeners, whilst , STRETCHING”® of the molecular chain at the initial wetting stagemeans highest achievable yields.

How YTRON-ZC works

The powder is sucked into the dispersing section from the feed hopper. The liquid entering tangentially creates a centrifugal field of liquid in the dispersing section. The powder / liquid mix is immediately dispersed by the labyrinth of rotor / stator teeth. Free discharge from the YTRON-ZC housing is ensured without any clogging or sticking.

The use of the YTRON-ZC brings

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