Screw conveyors for biomass with high straw content manufactured for biogas plants.
The system consists of the following screw conveyors for biomass:
BEMA has its own design department. Our engineers work together with the customer to adapt screw conveyors to the specific application. BEMA’s screw conveyors are tailored to actual conditions, eliminating the need for modifications to the process plant itself. This provides major advantages for the customer:
BEMA collaborates both directly with biogas plants and with engineering companies that supply complete solutions for biogas facilities.
Screw conveyors for biomass are used to move large volumes of straw-containing material safely and reliably within biogas plants. The system typically consists of a receiving silo with bottom screws, a lifting screw, and a delivery screw to the reactor. The design is developed to handle straw, which can be light, irregular, and prone to compaction, and therefore requires a robust and reliable solution.
Straw can easily create bridging and blockages, which is why push screws are installed above the bottom screws in the receiving hopper. These ensure continuous feeding of material to the screw conveyors. At the same time, the screw housings are designed as angular housings, which better retain the material and reduce the risk of accumulation. The design is optimized for continuous operation in a demanding biomass environment.
BEMA has delivered many solutions for biogas plants and has extensive experience with abrasive and sometimes aggressive media. In certain cases, the screw conveyors are manufactured in stainless steel 1.4301 / AISI-304. In addition, BEMA produces spare part rotors and can measure existing systems for accurate reproduction.
BEMA supplies standard screw conveyors with angular housings, U-shaped troughs, shaftless trough screw conveyors for sticky media, and special screw conveyors for specific process steps. All solutions are adapted to the customer’s plant, reducing the need for costly modifications and ensuring fast installation.
| Product type | Screw conveyor |
|---|---|
| Industry | Waste and recycling technology |
| Transported material | Biomass |
| Applied steel in product | Carbon steel |
| Surface treatment | Carbon steel – painted |





BEMA A/S
Bredholm 3
6100 Haderslev
Denmark
CVR: 15525991
Contact
Phone: +45 74 52 16 21
E-mail: info@bema.as