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Biogas plant Venaria Reale (I) Customer La Bellotta Soc. Semplice Agricola (I) Plant data Commissioned: 2010 Input: Maize silage, Triticale silage Power electric: 999 kW Reference Plant
Biogas plantVenaria Reale (I)
Customer
La Bellotta Soc. Semplice Agricola (I)
Plant data
Commissioned: 2010
Input: Maize silage, Triticale silage
Power electric: 999 kW
Reference Plant
Plant design and processThe input material is stored in silage clamps to prevent any premature aerobic reaction. The material is compressed and covered. This minimises the energy loss as well as odour emissions.
The incoming liquid input is stored in two preliminary pits. These pits also serve to capture surface water and drainage water from the silage clamps which is pumped into the digester.
The feeding of the main digester is done through a special Thöni feeding unit for solid matters (consisting of a container module and automated conveyor system). The storage capacity of a feeding unit is 117 m³. The loading of the container module has to be done by a wheel loader.
The digesters are designed as round vessels made from reinforced concrete with a gas storage unit. Sufficient insulation and integrated heating systems ensure optimal conditions for the generation of biogas from the input substrates.
The homogenisation of the material in the digesters is effected by means of slow turning Thöni paddle mixers and by fast turning propeller mixers. The mixers also help to prevent the formation of floating layers and sediment deposits, and at the same time they help the biogas to escape.
After the fermentation process a separation unit separates the fermentation residue (digestate) into a solid and a liquid part. The liquid part is pumped into the final storage unit and can be spread on the fields as high quality fertiliser. The remaining solids are almost odorless and also have very good fertilising properties.
Before the biogas passes to the CHP power plant, it is treated in an external desulphurisation system.
After the biogas is desulphurised, it is introduced to the cogeneration plant where it will be converted into electrical and thermal energy. The electricity shall be fed to the local supply network.
Reference Plant
www.thoeni.com Subject to error and misprints © Copyright Thöni Industriebetriebe GmbH 2012
Plant data
Power electric: 999 kW
Storage pit/liquids: 2 × 88 m³
Loading unit/solids: 1 × 117 m³
Digester: Reinforced concrete 2 × 3.000 m³
Gas storage: Double membrane 2 × 1.500 m³
Paddle mixer: 3 × Main digester 2 × Secondary digester
Propeller mixer: 1 × Main digester 1 × Secondary digester
Shaft mixer: 1 × Secondary digester
Gas cleaning: External scrubber, Thöni Sulf Minus System
CHP power plant: GE Jenbacher
Biogas plantMedicina (I)
Customer
Società Agricola Cazzani Medicina (I)
Reference Plant
Plant data
Commissioned: 2008 (1,4,MW), 2010 (+ 1,4 MW)
Input: Feedstock, Agricultural by-products
Power electric: 2 × 1.416 kW
Plant design and processThe input material is stored in silage clamps. In order to prevent any premature degradation, the material is compressed and covered. This minimises the energy loss as well as odour emissions.
A reception pit is provided as storage tank for the incoming liquid input material. This pit also serves to capture surface water and drainage water from the silage clamps which is continuously pumped into the digesters.
The feeding of the digesters is achieved by a special Thöni feeding unit for solid matters (consisting of a container module and automated conveyor system). The storage capacity of a feeding unit is approx. 100 m³. The loading of the container module has to be done by a wheel loader.
The digesters are designed as round vessels made from reinforced concrete with a gas storage unit on top. Sufficient insulation and integrated heating systems ensure optimal conditions for the generation of biogas from the input feedstock.
The homogenisation of the material in the digesters is achieved by means of slow turning Thöni paddle mixers and by fast turning propeller mixers. The mixers also help to prevent the formation of floating layers and sedimentation, and at the same time they help the biogas to escape from the substrate.
After the fermentation process a separator unit separates the fermentation residue (digestate) into a solid and a liquid phase. The liquid part is pumped into the final storage unit and can be spread onto agricultural land as a high quality fertiliser. The remaining solids are almost odorless and also have very good fertilising properties.
Before the biogas passes to the two CHP units, it is treated in an external desulphurisation unit to clean it from H2S.
After the biogas has been desulphurised, it is burnt in the cogeneration plants and thus converted into electrical and thermal energy. The electricity is fed into the local power grit, while the heat is partially utilised to maintain the fermentation process and also used within a district heating network.
www.thoeni.com Subject to error and misprints © Copyright Thöni Industriebetriebe GmbH 2012
Reference Plant
Plant data
Power electric: 2 × 1.416 kW
Storage pit/liquids: 2 × 75 m³
Loading unit/solids: 2 × 100 m³
Digester: Reinforced concrete 2 × 3.000 m³ 1 × 4.700 m³
Gas storage: Double membrane 2 × 1.500 m³ 1 × 3.500 m³
Paddle mixer: 2 × Digester 1 2 × Digester 2
Propeller mixer: 1 × Digester 1 1 × Digester 2 1 × Secondary digester
Shaft mixer: 1 × Digester 1 1 × Digester 2 3 × Secondary digester
Gas cleaning: External scrubber, Thöni Sulf Minus System
CHP power plant: 2 × GE Jenbacher
Biogas plantSuffolk (UK)
Customer
Agrigen Ltd. (UK)
Reference Plant
Plant data
Commissioned: 2011 (500 kW), December 2012 (extension to 2,5 MW)
Input: Maize silage, Agricultural by-products
Power electric: 2,5 MW
Plant design and processThe input material is stored in silage clamps. In order to prevent any premature degradation, the material is compressed and covered. This minimises the energy loss as well as odour emissions.
A reception pit is provided as storage tank for the incoming liquid input material. This pit also serves to capture surface water and drainage water from the silage clamps which is continuously pumped into the digester.
The feeding of the digesters is achieved by a special Thöni feeding unit for solid matters (consisting of a container module and automated conveyor system). The loading of the container module has to be done by a wheel loader.
The digesters are designed as round vessels made from reinforced concrete with gas storage unit on top. Sufficient insulation and integrated heating systems ensure optimal conditions for the generation of biogas from the input feedstock.
The homogenisation of the material in the digesters is achieved by means of slow turning Thöni paddle mixers and by fast turning propeller mixers. The mixers also help to prevent the formation of floating layers and sediment deposits, and at the same time they help the biogas to escape from the substrate.
After the fermentation process a separation unit separates the fermentation residue (digestate) into a solid and a liquid phase. The liquid part is pumped into the final storage unit and can be spread onto agricultural lands as high quality fertiliser. The remaining solids are almost odorless and also have very good fertilising properties.
Before the biogas passes to the CHP unit, it is desulphurised directly in the digester via air metering and further treated in an external desulphurization unit to clean it from H2S which would ruin the CHP if the content exceeds a certain limit.
After the biogas is desulphurised, it is burnt in the cogeneration plant and thus converted into electrical and thermal energy. The electricity is fed into the local power grid, while the heat is partially utilised to maintain the fermentation process and also used within a district heating network.
Reference Plant
www.thoeni.com Subject to error and misprints © Copyright Thöni Industriebetriebe GmbH 2012
Plant data
Power electric: 2,5 MW
Storage pit/liquids: 1 × 100 m³ Underground concrete vessel
Loading unit/solids: 2 × 117 m³
Digester: Reinforced concrete 2 × 3.000 m³ 1 × 4.000 m³
Gas storage: Double membrane 3 × 1.500 m³
Paddle mixer: 3 × Digester 1 3 × Digester 2 3 × Secondary digester
Propeller mixer: 1 × Digester 1 1 × Secondary digester
Gas cleaning: External biological scrubber
CHP power plant: MWM
Biogas plantCavenaggo d’Adda (I)
Customer
Zerbaglia (I)
Reference Plant
Plant data
Commissioned: 2011
Input: Maize silage, Triticale silage, Percolates
Power electric: 999 kW
Plant data
Power electric: 999 kW
Storage pit/liquids: 1 × 88 m³
Loading unit/solids: 1 × 117 m³
Digester: Reinforced concrete 2 × 3.000 m³
Gas storage: Double membrane 2 × 1.500 m³
Paddle mixer: 3 × Main digester 2 × Secondary digester
Propeller mixer: 1 × Main digester 1 × Secondary digester
Shaft mixer: 1 × Secondary digester
Gas cleaning: External biological scrubber
CHP power plant: GE Jenbacher
Plant design and processThe input material is stored in silage clamps. In order to prevent any premature aerobic reaction the material is compressed and covered. This minimises the energy loss as well as odour emissions.
The incoming liquid input is stored in two preliminary pits. These pits also serve to capture surface water and drainage water from the silage clamps which is pumped into the digester.
The feeding of the main digester is done through a special Thöni feeding unit for solid matters (consisting of a container module and automated conveyor system). The storage capacity of a feeding unit is approx. 100 m³. The loading of the container module has to be done by a wheel loader.
The digesters are designed as round vessels made from reinforced concrete with gas storage. Sufficient insulation and integrated heating systems ensure optimal conditions for the generation of biogas from the input substrates.
The homogenisation of the material in the digesters is effected by means of slow turning Thöni paddle mixers and by fast turning propeller mixers. The mixers also help to prevent the formation of floating layers and sediment deposits, and at the same time they help the biogas to escape.
After the fermentation process a separator unit separates the fermentation residue (digestate) into a solid and a liquid part. A part of the liquid is recirculated in the digesters, the remaining part is pumped into the final storage unit and can be spread on the fields as high quality fertiliser. The remaining solids are almost odorless and also have very good fertilising properties.
Before the biogas passes to the CHP power plant, it is treated in an external desulphurisation system.
After the biogas is desulphurised, it is introduced to the cogeneration plant where it will be converted into electrical and thermal energy. The electricity shall be fed to the local supply network.
Reference Plant
www.thoeni.com Subject to error and misprints © Copyright Thöni Industriebetriebe GmbH 2012
