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NOYAL-CHATILLON, FRANCE: INNOVATIVE BIOGAS PLANT

This biogas plant at a cattle farm in Noyal-Chatillon near Rennes, France is characterized by its innovative features that enhance energy and maintenance efficiency, resulting in maximum performance. HoSt acted as one-stop supplier for this turnkey biogas project.

In the first phase, the biogas plant will produce 140 Nm3 biogas per hour (75 Nm3 biomethane per hour) from a maximum of 8,500 tonnes of cattle manure and maize silage per year. Future plans are to extend the installation to 200 Nm3 biogas per hour (110 Nm3 biomethane per hour).

Double insulated double membrane roofs

At this project at cattle farm ‘Castelmetha’ the digestion tanks are equipped with double insulated double membrane roofs. Due to the special design of the insulated roofs maximal heat retention and minimal odor spread is ensured. Together with an advanced heat recovery system and extra tank insulation this results in maximum energy efficiency. An external heat exchange system is used, instead of an internal heat system, to enhance maintenance efficiency.

Double incorporation screw

For optimal feedstock particle size, the solid feeder fuel system is equipped with a double incorporation screw. In addition, the integrated HoSt Ruminator System recirculates feedstock from the digester, grinds the feedstock and feeds it back into the digester. This process prevents floating layers formation of biomass and creates the most ideal anaerobic digestion process for an optimal biogas production.

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PROJECT MILESTONES

Start construction January 2019
Startup March 2020

SPECIFICATIONS

Input 8,500 tonnes of cattle manure and maize
silage
Digester 1 x digester Ø 22 x 6
After-digester 1 x after-digester Ø 22 x 6
Solid feeding input 1 dosing mixing bowl of 60m³ with 2 incorporation screws connected to the digester and to the after-digester
Liquid storage 337m³ tank covered with grinder pump

BIOGAS UPGRADING

Capacity 140 Nm3 / hr biogas (future extension: 200 Nm3 / hr)
75 Nm3 / hr biomethane (future extension: 110 Nm3 / hr)
Methane concentration biogas 54%
Methane concentration product gas 97%
Efficiency 99.5%

CHARACTERISTICS

  • Innovative features
  • Double incorporation screw (solid feeder fuel system)
  • Double insulated double membrane roof
  • Advanced heat recovery
  • External heat exchange system
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More information

Do you want to receive more information about our biogas plants, want to learn more about our anaerobic digestion technology or do you want to know what HoSt can do for you? Don’t hesitate to contact us through [email protected] or call us on +31 (0)53 – 460 90 80 and ask for Sjaak Klein Gunnewiek.

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