Horizontal peeler centrifuges
Horizontal peeler centrifuges
Pharma design - Series H 630 - 1300 P
Inadequate hygiene in machinery and equipment in pharmaceutical-related applications can cause health hazard due to product contamination. Therefore HEINKEL Pharma Centrifuges are designed so that cleaning and inspection are easy to perform.
Special properties for the benefit of the customer
- Broad operational spectrum
- Highest standards regarding cGMP
- Fully automatic, validated CIP cleaning
- All components in the process chamber can be inspected
- Clean room installation (optional)
- Use of pharmaceuticals compliant materials and sealing materials
- Avoidance of potential sources of contamination
Filling
The suspension that is to be separated is filled into the horizontal, overhung perforated basket at a pre-selected loading speed. As a result of the centrifugal force, the solid particles settle on the filter fabric on the basket shell.
The solids are retained by the filter fabric, suspension fluid flows through the forming filter cake, including the filter fabric and leaves the perforated basket through bore-holes in the basket sleeve.
During filling, the fluid level in the basket and the growth of the filter cake are controlled by sensors. Upon reaching the desired filter cake height the filling process is stopped automatically.
Intermediate spinning
Depending on the product, a filling process will be interrupted by intermediate spinning with increased speed, in order to free filling volume in the basket and continue the filling process.
Depending on the filtration reaction of the product, intermediate spinning will be repeated several times.
Washing the solids
As soon as the suspension fluid has been centrifuged, the washing the solids in the basket process is started. During this phase the washing fluid is evenly distributed via a suitable washing pipe (nozzle pipe or orifice-type sprayer) throughout the whole length of the basket.
as a result of the centrifugal force, the washing fluid penetrates the filter cake, displaces the still sticking suspension fluid and leaves the basket in the same way as the suspension fluid during filling.
Spinning
In order to separate the fluid from the filter cake the basket is generally accelerated to the maximum allowable speed and kept constant at this speed. Kinetics of the spinning process depend on the solids and fluid parameters, the height of the filter cake and, naturally, the centrifugal force acting upon the fluid to be separated.
The residual humidity in the filter cake decreases over time under the constant centrifugal force and asymptotically it approaches a theoretical limit.
