Lanes Farm Energy an "exemplary example" of a biomethane plant execution and commissioning
Germany-headed biogas technology provider Weltec Biopower GmbH has announced that the recently completed Lanes Farm Energy biomethane-to-grid project near Pontefract, West Yorkshire, UK went live after only six months construction time. The anaerobic digestion (AD) plant, which also upgrades the biogas and injects the biomethane to the grid, is an "exemplary example" of project implementation, execution, and commissioning.
On October 14, 2019, the biomethane plant of Lanes Farm Energy near Pontefract, West Yorkshire supplied the first biomethane in the required quality to the UK gas distribution network. From now on, the plant will deliver around 7.3 million Nm³ biomethane per annum, which is sufficient to supply about 9 600 households with sustainable energy.
Food leftovers account for more than half of the 80 000 tonnes-per-annum (tpa) of substrates. Cattle and chicken manure, as well as grass silage and hybrid rye, make up the balance. The solids are fed through two walking-floor feed hoppers with 110 and 220 m³, and two MULTIMix units, which removes foreign objects, liquefies, shreds and macerates incoming solids to make them into an easily pumpable, easily mixed, easily digested liquid.
The liquids are dosed in controllable volumes directly to digesters from five pre-storage tanks, of which two are equipped with a stainless steel bottom.
The gas production takes place in four stainless-steel digesters with a height of 8.8 m and an above-average capacity of 6 848 m³ each. Weltec has decided to implement membrane upgrading to remove the carbon dioxide (CO2) and other impurities transforming the biogas into high-quality biomethane.
In a separation process comprising several stages, the raw biogas is refined efficiently without methane slip.
Additionally, the biomethane production yields digestate, which is used as high-quality fertiliser, returning organic material and nutrients back to the land. For this purpose, it is first pasteurised and separated. For on-site electricity supply, Weltec has integrated a 500 kilowatt combined heat and power (CHP) unit. The operator generates additional income from exporting excess electricity to the grid.
This project will bring many benefits to the project developers Aqua Consultants as the technology is state of the art. Furthermore the fast construction time and the construction costs within the budget speak for themselves. We have to thank all involved parties for the good cooperation and hope that this project will be a role model for future waste-to-energy projects, commented Wolfgang Bokern, Weltec Biopower on the successful commissioning.