Dewatering

A high dry mass content at constant or higher throughput of the pulp press is a decisive factor for subsequent processes. The higher the dewatering performance, the lower the energy costs for drying. A dewatering process can be optimised in different places. ANDRITZ helps you to optimally exploit potential for improvement.

Drilled press screens

The drilled screens from ANDRITZ ensure optimal dewatering in the pulp presses and enable both a reduction in energy consumption and maintenance costs. Thanks to the maximum number of holes and an ideal hole geometry, the risk of clogging is minimised and optimum dewatering results are achieved, which reduces energy consumption for the subsequent drying of the beet pulp.
Another important aspect of dewatering is the correct distance between the screw and the screens in the press, in addition to the number of holes. The drilled screens from ANDRITZ are more resistant to abrasion and deflection, and therefore have a longer service life. This robustness is a result of the screen design and the use of particularly wear-resistant stainless steel alloys, which are perfectly matched to the requirements in the presses.

Benefits:

High dimensional stability: no deformation in normal operation
High wear resistance
Low risk of blockage due to special hole geometry

Drilled press screen

Punched press screens

As a less expensive alternative to drilled press screens, ANDRITZ also supplies punched screens for sugar beet presses. Punched screens for pulp presses have a hole diameter greater than 1 mm and a sheet thickness of 1-2.5 mm, depending on the hole diameter. The lower stability of these thin sheets is compensated by punched support screens.

Benefits:

Less expensive alternative to drilled screens
Increased stability due to "sandwich" construction
If damaged, only the fine inner screen is replaced

Punched press screen

Pre-dewatering screen pulp press

Another step to increasing the dewatering performance of the pulp press is to start dewatering in the pulp feed. For this purpose, ANDRITZ offers pre-dewatering screens made of wedge wire for maximum dewatering performance.

Benefits:

Effective pre-dewatering
Improvement of the dry mass content of the
beet pulp
Available in wedge wire and alternatively drilled

Pre-dewatering screen pulp press

Matrices for pellet presses

Pellet presses are used in the further processing of beet pulp residues. The dewatered beet residues are pressed through drilled matrices into pellets, which are then used as animal feed.