Advanced thermal conversion technology has been applied for the first time in th ...

Advanced thermal conversion technology has been applied for the first time in the UK to a waste stream at a gasification plant on the Isle of Wight. Supported as part of Defra’s New Technology Demonstrator Programme, the Energos plant is a small, community sized facility. It runs alongside Biffa subsidiary Island Waste Services’ waste processing and recycling operation and generates 2.3 MW of electricity from residual waste. Energos, part of UK-based sustainable energy technology company ENER-G, uses an advanced thermal treatment process that converts residual, non recyclable waste into a gas by using the heat of partial combustion to liberate hydrocarbons. Complete oxidation of the gas in a finely controlled environment enables tighter controls than can be achieved in conventional energy from waste plants, resulting in lower emissions. The heat produced is recovered to produce steam and/or electricity. The Isle of Wight project is the only energy from waste process in the UK that has preliminary accreditation for Renewable Obligation Certificates (ROCs). Full accreditation is anticipated once fuel measurements of the qualifying biodegradable portion of the waste are accepted by the regulator. The company anticipates that its renewable waste content will be greater than 60%. Energos pioneered the process in Norway where it operates five community facilities in tandem with recycling operations. A further plant in Germany brings the company’s total operating experience to 400,000 hours. The facility has created seven full-time jobs, says the company, making an important contribution to the island economy. It will incorporate a visitor centre that is expected to attract visitors from local authorities across the UK and Europe as greener waste processing technologies gather pace. As the energy produced from the project is used on the Island, there is little wastage during the transmission process. Previously, all electricity has come from the mainland. The plant generates electricity from 30,000 tonnes of fuel produced from 60,000 tonnes of waste processed through Island Waste Services’ Resource Recovery Facility. The project makes use of existing infrastructure and equipment (including boilers, steam turbine, and flue gas cleaning equipment) from a former incineration plant.

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