Heating
The temperature of the digestion tanks is maintained between 38 and 42°C in order to guarantee the development of mesophilic bacteria participating in the methanization process. The tanks are heated by self-consumption of heat from the cogeneration engine or a boiler using the biogas produced.
To limit this self-consumption, France Biogaz Valorisation focuses on :
✓ Reducing needs by insulating digestion tanks and gas holders
✓ Maximizing the different possible heat recovery
✓ Efficiency and control of heat exchanges
Discover the solutions implemented by France Biogaz Valorisation
Stainless steel coils in the tanks
✓ From 2 to 6 coils per tank to be heated
✓ Simplicity and ease of implementation
✓ Low power consumption
External heat exchanger
✓ Tubular water/digestate counter-current exchanger
✓ Control using temperature probes
✓ Ease of opening and cleaning if necessary
✓ Possibility of heating several tanks
✓ Modularity, easier increase in heating capacity in the event of expansion
Heated floor and sail
✓ No crust formation possible in the tanks
✓ Low power consumption