Pusher-floor systems for biogas plants
Reliable system feeding for large quantities of substrates and continuous operation
Pusher floors are used in biogas plants when large quantities of substrate need to be stored and continuously fed into the digester. The large storage capacity, combined with a durable design, ensures trouble-free operation. Our solutions can be flexibly integrated into existing plants and offer a robust, low-maintenance feeding system for demanding operating conditions.
Typical Requirements and Their Benefits
Large quantities of substrate & high throughput
Reliable conveying even with continuous feeding
Continuous operation
A constant, uninterrupted flow of material
Uniform Feed to the Fermenter
Stable Process and Reliable Plant Performance
Demanding operating conditions
Robust construction and long service life
Minimal loading effort
due to high inventory levels
Energy-efficient and powerful
Low power consumption of the hydraulic drives.
Technical Specifications and Performance Data
PRÄZI Sliding-Floor Entry System
| Performance Data | • Volume: 48–144 m³ • Width: 3.2 m (two-row) or 4.8 m (three-row) • Length: up to 12 m • Hydraulic power: 7.5 kW or 11 kW |
| Design & Materials | • Sturdy construction made of concrete, steel, and stainless steel • Designed for long-term use under heavy loads • Drive-over design for easy loading |
| Operation and Maintenance | • Generously sized conveyor elements for reliable material flow • Reinforced areas with wear-resistant components • Quick and easy access to replacement parts • All components, including plastic and steel parts, can be replaced as needed |
Flexible Integration into Your Biogas Plant
Our sliding-floor feeding systems can be seamlessly integrated into existing plant designs and perfectly complement existing equipment.
This provides you with a reliable feeding solution without having to completely replace existing systems.
Adaptation to existing plant structures
Integration with existing conveyor and feeding systems
Flexible integration with other technology
Expandable with dissolution and dosing technology – optimization instead of a complete replacement
Not sure how to integrate the system into your facility?
We’ll help you with the planning and find the right solution for your existing setup—tailored to your system, your substrate, and your requirements.
Your Consultant for Conveying Technology
FAQ
Here you will find answers to frequently asked questions.
What are the advantages of the PRÄZI sliding floor system?
The PRÄZI moving-floor system is characterized by its very high storage capacity and its adaptability to your needs. You’ll receive a solution tailored to your requirements that can be operated with minimal loading effort and energy consumption. All components can be replaced if spare parts are needed and are available on short notice.
Which substrates can be reliably conveyed using a push-floor system?
In standard operation, our push floors are optimally designed for the continuous and energy-efficient conveyance of corn silage. However, thanks to their extremely robust construction and powerful forward motion, they can also easily handle highly structured, long-fiber, and difficult-to-convey biomass such as solid manure, grass, straw, or whole-plant silage (GPS). Important: We manufacture systems exclusively for solid feed; systems designed solely for liquid feed (e.g., for pure manure systems) are not part of our product portfolio.
How does a moving-floor system prevent the dreaded bridging in the receiving hopper?
Bridge formation often occurs when long-fiber substrates become wedged in the hopper and block the flow of material. Our push-floor system prevents this through the large-area, alternating movement of the solid push beams on the bunker floor. The material is pushed across the entire surface and evenly toward the downstream breaking roller. This active crushing technique loosens the substrate and continuously feeds it to the screw conveyor, ensuring clog-free plant operation.
How do you protect the heavily used push beams from abrasive wear?
Upon request, we can provide you with a ceramic coating.
Is the moving-floor system also suitable for repowering existing biogas plants?
Bridge formation often occurs when long-fiber substrates become wedged in the hopper and block the flow of material. Our push-floor system prevents this through the large-area, alternating movement of the solid push beams on the bunker floor. The material is pushed across the entire surface and evenly toward the downstream breaking roller. This active crushing technique loosens the substrate and continuously feeds it to the screw conveyor, ensuring clog-free plant operation.