Alfa Laval Hybrid Powder Mixer S15 Powder mixers

Introduction

The Alfa Laval Hybrid Powder Mixer S15 is a stationary dual

stage inline powder dissolution unit that quickly and efficiently

disperses powders, mixing them with liquids into a

homogeneous blend. Using a single-motor pump, it then

transfers the resulting solution at outlet pressures of up to 5

bar. Versatile, cost effective and easy to use, this mixer

efficiently produces homogeneous products at high dry matter

concentrations and high yields.

Applications

The Hybrid Powder Mixer S15 is an excellent choice for

blending thickeners, stabilizers and emulsifiers into

concentrations required in most hygienic applications in the

dairy, beverage and food industries. It is also capable of

producing recombined milk with more than 50% dry matter.

Benefits

• Fast and homogenous powder dissolving

• A combination of a stationary inline powder-liquid mixer

and a pump

• High dynamic shear, gentle mixing

• Reduced installation, emissions, energy and maintenance

costs

• Reduced total cost of ownership combining the functions

of powder mixing and pumping into a single unit

• Reduced investment cost due to the reduction to basic

functions

Standard design

The Alfa Laval Hybrid Powder Mixer S15 is comprised mainly

of a two-stage pump with a rotor-stator as the first stage and

as a second stage. It is also equipped with a funnel and an

injector. The funnel is used to introduce powder through an

injector system, which can be isolated using a hygienic C-ball

valve. The injector pre-blends the powder and the liquid, while

at the same time creating underpressure in the funnel outlet.

The S15 unit is reduced to basic functions, without table,

frame and frequency converter and therefore has lower

investment costs than the fully equipped Alfa Laval Hybrid

Powder Mixer M15.

Working principle

The two-stage inline Alfa Laval Hybrid Powder Mixer S15 is

typically integrated into a circulation loop connected to a

batch tank.

After adding liquid ingredients to the tank, the Hybrid Powder

Mixer circulates the liquid over the tank. To provide additional

high-efficiency mixing for tanks with volumes larger than 1 - 2

m³, Installing an Alfa Laval Rotary Jet Mixer is highly

recommended.

When adding powder to the liquid, the powder is added

through the funnel. The valve under the funnel is opened. The

injector positioned under the valve creates an underpressure

in the funnel outlet, drawing the powder into the rotor-stator

and pre-blending the products. The rotor/stator (single rings)

creates the main shear, dynamically and efficiently blending

powder and liquid into a homogeneous mixture.

The pump impeller in the second stage creates the final shear

and transfers the powder-liquid mixture to the tank under high

pressure. A portion of the powder-liquid mixture is sent

through the injector back to stage one. This way, the liquid

flow in the injector creates the underpressure in the funnel

outlet, which enables the dynamic suction of the powder into

the liquid.

When the mixing is completed, the Hybrid Powder Mixer may

be used as a discharge pump, or as a Cleaning-in-Place (CIP)

recirculation pump to clean the tank when used in combination

with an Alfa Laval Rotary Jet Mixer.