Plate & Frame Polishing and DE-Filter

The DE plate & frame Filter System filters all types of beers, provides lowest turbidity values, reliable and cost efficient.

Based on the low specific filtration flow per square meter and hour there are long filtration cycles with lowest DE consumptions possible. The low filter volume stands for minimized beer water interfaces and minimizes beer losses.

The system comes in a standard executions and capacity‘s with semi or even full automatic automation. It can be customized to your process and capacity requirements, combined with Trap Filters, buffer tanks, carbonation, blending, CIP system and all other equipment in the vicinity of the filter.

Advantages and functions

Excellent filtration quality based on low specific filtration capacity
Lowest DE consumption of all existing filtration systems
Highly reliable and cost efficient
Maintenance free and very long lifetime
Easy extendable / adding of additional sludge frames and filter elements Hygienic design, full CIP-capabilit
Hygienic design, full CIP-capability
Semi to fully automatic operation with standard PLC and touch panel
Optional integration of filtration into process control system and remote maintenance
Individually dimensioned and designed for each specific application
Equipment and components according to customer specification
Compact tubular frame system, skid mounted
Low installation costs, short start up and commissioning

Technical Description

To achieve excellent filtration results stainless steel filter elements (stainless steel frames) are used as the carrier for the DE (Kieselguhr). The filter elements are first covered with coarse and subsequently with finer DE type.

The so-called ‘pre-coat’ is the basis for the good beer filtration effect. The first pre-coat with coarse DE type is injected into the filter internal recirculation loop filled with de-aerated water, and the whole process takes approx. 15 minutes. The same happens with second pre-coat where medium and/or fine DE types are used.

After the pre-coat has been done, the de-aerated water inside the filter is pushed out with unfiltered beer until the necessary sales gravity at the inlet of the bright beer tank has been reached.

The re-use (re-covering) of the beer/de-aerated water mix guarantees very low extract losses and very short down times. During whole filtration process some DE is injected into the main beer flow at the inlet of the candle filter to avoid a fast blocking (delta p) of the DE cake.

At the end of the filtration process beer is pushed out with deaerated water, and as soon as the extract value is below sales gravity, the beer / de-aerated water mix is recovered for adding it during the next filtration cycle.