Feeding technology for biogas plants
The right solution for reliable and efficient transfer from the dosing unit to the fermenter
Are you already using a solid-material feeder, or are you planning to use one? Our feeding technology ensures that the substrate enters the fermenter in a controlled, trouble-free, and uniform manner. Would you like to store larger quantities of substrate? Check out the PRÄZI moving floor.
Feeding method based on the dosing unit—crucial for a stable material flow
We can help you design the optimal feed system—tailored to your substrate, throughput, and existing equipment.
Reliable Material Transfer
Reliable transfer from the dosing unit without backups or interruptions
Continuous Material Flow
Consistent feeding for stable fermenter loading
Clog-free operation
Even with fibrous or heterogeneous substrates
High operational reliability
Fewer malfunctions and stable system operation on a day-to-day basis
Robust design
Durable technology for continuous use and abrasive materials
Problems with material flow or blockages? We’re here to help.
Technical Specifications of Our Installation Technology
PRÄZI 300 Series Entry
For compact systems and cost-effective standard applications
| Conveying capacity per hour | 10 m³ / h |
| Motor power of three-part systems | 13.5 kW |
| Manufacturer of the drives | Gearbox construction north |
| Outer diameter of the pipes | 323 mm |
| Material quality | Stainless steel (V2A), extremely robust |
| Compatibility | Suitable for fermenters up to 8 m in height |
| Operating efficiency | • Cost-effective entry into the feeding technology • Robust and low-maintenance design • Fast availability of replacement parts • Ideal for standardized applications |
| Recommended for | • Small to medium-sized systems • Uniform substrates • Focus on cost-effectiveness |
PRÄZI 500 Entry
For high throughputs and challenging substrates
| Conveying capacity per hour | 30 m³ / h |
| Motor power of three-part systems | 22 kW |
| Manufacturer of the drives | Gearbox construction north |
| Outer diameter of the pipes | 457 mm |
| Material quality | Stainless steel (V2A), extremely robust |
| Compatibility | Suitable for fermenters up to 8 m in height |
| Operating efficiency | • High throughput with low energy consumption • Suitable for demanding and varying substrates • Minimized risk of clogging • High uptime thanks to rapid spare parts supply |
| Recommended for | • high throughput requirements • difficult or fibrous substrates • larger systems |
PRÄZI 300 or PRÄZI 500—which solution is right for your system?
PRÄZI 300 Series
The right choice when….
- a compact and cost-effective solution is needed
- substrates that are predominantly uniform are used
- small to medium-sized facilities are operated
- The focus is on robust, low-maintenance operation
PRÄZI 500 Series
The right choice when….
- high throughputs must be handled reliably
- used on challenging or fibrous substrates
- larger facilities are operated
- maximum process stability is required
Still not sure which system is right for you?
We'll help you find the optimal solution for your specific application—tailored to your substrate, throughput, and existing equipment.
Your Consultant for Conveying Technology
FAQ
Frequently Asked Questions About Feeding Technology for Solid Dosing Systems.
Why is the feeding technique after the dosing unit so important?
After dosing, the feeding method determines whether the substrate is reliably delivered to the digester. Errors in this process step often lead to blockages, uneven feeding, and reduced performance of the biogas plant.
What problems commonly arise during the installation process?
Direct-injection systems are optimally designed for corn silage in standard operation, but can also operate reliably with more challenging substrates.
Suitable substrates include, among others:
– corn silage
– solid manure
– grass
– whole-plant silage (GPS)
Thanks to their robust construction and powerful drives, even high-fiber materials can be conveyed reliably. The technology is designed exclusively for solid feed—pure liquid systems (e.g., liquid manure) are not within its scope of application.
What problems commonly arise during the installation process?
The feeding technology is suitable for a wide range of substrates, including:
– silage and corn
– manure and solid manure
– organic waste
– heterogeneous and fibrous materials
The exact design always depends on the specific requirements of the facility.
How can I prevent blockages when using the insertion technique?
Blockages can be prevented by using a customized feeding technique that:
– is designed for the substrate
– ensures uniform feeding
– is robust and designed to minimize wear
Proper design is the most important factor here.