FLEXIBLE BIOGAS PLANT WITH PROVEN HOST TECHNOLOGY
Following construction of the Euston biogas plant in 2014, located near Thetford, UK, HoSt has since built a second gas to grid digestion plant for the same customer. The Bay Farm biogas plant was constructed in 2016 and successfully commissioned in early 2017, located near to the village of Worlington in Suffolk, only a few miles from the original Euston plant.
The ‘Bay Farm’ plant, utilising proven HoSt digestion technology, is equipped with two types of solid feedstock reception bin, including a ‘walking floor’ system in combination with a conventional auger mixed unit. The functionality of these two designs work in a complimentary way, providing the plant operator with significant feedstock input flexibility. Following reception, a second pre-treatment stage is where the feedstock is chopped, mixed and blended with recirculation liquid, before being pumped to the digesters. An additional level of process flexibility and performance is achieved using containerised pumping headers, where the blended feedstock liquid can be transferred directly to either primary or secondary digester, depending on factors such as dry matter content and estimated required retention time.
A major advantage of the process flexibility of the plant is that the operator can receive a wide range of solid biomass inputs, also including liquids into the reception tank. This means that the operator can bring in many different feedstock materials in response to their availability and price in the market. The following products are an example of the feedstock range digested at the plant; including slurry, maize silage, brewers grain, cereal grain waste, grass silage, sugar beet, sugar beet pulp, rye and vegetable waste.
|Start construction||May 2016|
|Input||Slurry, manure, maize silage, sugar beet pulp, rye, vegetable waste and potatoes.|
|Digester(s)||2 x 4,000 m³|
|After-digester(s)||1 x 2,100 m³|
|CHP(s)||499 kWe + FGC and 1,000 Nm³/hr biogas upgrading system|
|Solid feeding input||• 1 x 80 m³ mixing dosing bin with Premix
• 1 x 120 m³ push floor with Premix
|Pre-storage / receipt||275 m³ liquid storage|
|After-storage||Lagoon for thin fraction from separator + bunker for thick fraction from separator|
|Digestate treatment||Screw press separator with drying system for thin fraction|
|Capacity||1,000 Nm³/hr biogas
540 Nm³/hr biomethane
|Methane concentration raw biogas||52%|
|Methane concentration product biogas||> 97%|
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 mean for you? Don’t hesitate to contact us through [email protected] or call us on +31 (0)53 – 460 90 80.