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Denmark's Avedore power station gets closer to use wood pellets as fuel

CTBR Staff Writer Published 17 June 2016

Dong Energy has said that unit 1 at Avedøre power station in Denmark is one step closer to using wood pellets rather than coal.

Dong

The decision to use wood pellets instead of coal was taken back in March 2015.

The largest single component in the conversion, which is a 34 tonne heavy cooler has been installed in the boiler house at a height of 20m.

Dong Energy senior project manager and project manager of the conversion Morten Reinhold said: "The conversion is progressing according to plan.

"And now that we've installed the large air cooler, we've taken an important step on the way towards a greener power station."

The wood pellets will initially be crushed in roller mills before they are blown into the 1,500 degrees hot boiler as dust in order to be converted to energy.

The new air cooler will make sure that the crushed wood pellets will not ignite before they reach the boiler.

Reinhold added: "We blow about 38 kilos of crushed wood pellets into the boiler every second.

"The large cooler must ensure that the air used for blowing the crushed wood pellets into the boiler does not exceed 130 degrees. If it does, the wood will ignite too early."

The process of conversion was started in April 2015 and according to Dong Energy, it is going as per schedule. It is scheduled to be completed by autumn of 2016.

When completed, this power station will become the first in Denmark to use 100% wood pellets instead coal and gas.

The power plant is expected to generate district heating based on biomass for about 215,000 homes in Copenhagen.


Image: Dong Energy is converting Avedore Power Station from coal to biofuel. Photo: Courtesy of DONG Energy A/S.