Type of CHP system: Anaerobic digestion
Plant owner: ENR is a limited liability company and an enterprise of the LOICK group.
Status of plant: Demonstration
Contractor details: CHP unit: Pro2 (module: LM 616-8)
Micro-turbine: Pro2 (installed Nov. 2003)
Power generation: Gas engine
Main fuel: Biogas
Nominal capacities & efficiencies:
Net electrical output: 0,349 MWe
Heat output: 0,73 MJ/s
Electrical efficiency, gross: 34,1 %
Overall efficiency, gross: 87,4 %
Power to heat ratio: 0,7
Gross-heat capacity by full load: < 28 MJ/s How is plant controlled:
The biogas plant generates a maximum of electricity to feed into the public grid and is limited by the amount of arising biomass input material. The gas engines run permanentely and the additionally installed microgas-turbine uses only the surplus-biogas.
Heat usage: Heating and cooling
Residential and office building, production company (all together 60 MWh/a)
and barn (10 MWh/a)
cooling energy (23 MWh/a)
Heat storage size: 10 m3
Fuel storage: The biomass plant storage facility has a capacity of max. 300 m³. This corresponds to roughly 12 days of running at full load.
The LOICK biogas plant in Dorsten is a demonstration project. The federal state of Nordrhein-Westfalen in cooperation with the Fraunhofer UMSICHT institute provided financial and professional support to this project.
Fuel feeding system: Mechanical loading system
Feedstock: liquid manure, renewable primary energy products, waste water, bio-waste
Digester capacity: 1150 m³
Residence time: 35 days
Process temperature: mesophilic (38°C)
Annual gas production: 1400000 Nm³
Specific gas yield: 140 m³ gas/ m³ feedstock
Gas quality: 60% methane
Engine: pilot injection gas engine
Flue gas cleaning:
Dust removal via fabric filter system
HCL reduction by flue gas scrubber
NOx-reduction via selective catalytic reduction (SCR)
SO2/SO3 reduction also by flue gas scrubber
one-level process; wet-fermentation (dry substance content: 18-20%)
the biogas plant had only one reciprocating engine from sept.-oct., in november a new micro-gas-turbine was installed
Staff: Appr. 2 full time persons
Electricity sale info:
The German biomass-CHP plants, which feed the generated electricity into public grid, get a fixed amount of allowances per kWh (according capacity and year of commissioning) by legal restrictions – EEG -. This allowances decreases every year.
Data collected and quality assured by: Institute for Energy and Environment.
Contact person: Janet Witt