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Sebigas CSTR Technology
Sebigas has developed specific technologies that perfectly adapt to the characteristics of the substrates, exploiting the entire methane potential.
CSTR (or Continuous-flow Stirred Tank Reactor) is a technology based on a
semi-continuous flow of fresh biomass that enters the reactors, mixed at controlled temperature, and exits as biogas and digestate.
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Product Description
CSTR – Continuous-flow Stirred Tank Reactor
The technology chosen by SEBIGAS for anaerobic digestion is CSTR (Continuous-flow Stirred Tank Reactor), based on a semi-continuous flow of fresh biomass as input in the digesters at a controlled temperature and mixed, and an output called digestate.
The plant with its material flows can be schematically shown as follows:
- Organic substrates are charged through a buffer tank or a solid feeder, depending on the type of biomass, into the primary digesters;
- The primary digester is fed directly with fresh substrates; the mixing inside it is optimized.
- The anaerobic digestion continues inside a post digester, a tank with a gasholder, in order to ensure a buffer volume for the produced biogas;
- The biogas can be used to produce electric and thermal energy thorough a cogenerator or it can be purified to separate the CO2, for chemical and alimentary industries, from the bio-methane;
- The output digestate can be spread on the fields as fertilizer, as it is or divided in solid and liquid fraction.
- Low autoconsumptions thanks to the optimization of the running time of mixers and pumps by the control system.
Advantages of Sebigas CSTR Technology
- Limited footprint.
- Flexible technology able to better manage every kind of available by-product or biomass
- Easy maintenance in order to limit to zero plant shutdowns.
- High-quality equipment and materials
- Excellent mixing system, result of a fluid dynamics study.
- Low self-consumptions thanks to the optimization of the running time of mixers and pumps by the control system.
For more information on our CSTR Technology, please visit the Sebigas website.