Green energy : ERDA takes shape 07/12/2005
LA MEUSE - Luxembourg - 08/11/05 - Béatrice Herry

Green energy projects are taking concrete shape.
Investment amount: 30 million euros, 40 direct jobs and 160 indirect jobs, as well as the
production of green electricity.

Construction of the wood pellet unit should be completed towards
the end of February or early March.



Construction machinery is busy in the Rouvrou industrial zone. The company "Energies renouvelables des Ardennes", ERDA, is taking visible shape. For the moment, the office building is being erected. You may remember that in January 2004, an innovative project was presented to the public. "Applied Plasma Technologies", APT, and private investors planned to produce energy using plasma torch technology and there was also talk of co-generation. We should soon see a co-generation unit and another wood pellet production unit. The investment amount is 30 million euros, creating 40 direct jobs and 160 indirect jobs, as well as producing green electricity.

Construction of the wood pellet unit should be completed towards the end of February or early March. This will be followed by the machinery. The schedule foresees entry into service for a "dry run" in July and real entry into production on 1st November 2006. These wood pellets, which are starting to become known to the general public, are destined mainly for converted coal-fired conventional power stations (notably the one at Awirs), and the rest for private use.

The co-generation unit will consist of a 30MW biomass boiler. It will generate 50,840MWh of green electricity which will be fed into the Electrabel network. It will also be used to dry sawdust, the raw material for the pellets. Jean-Marie Dehalu, general manager, explains: "This will be a modern, high-performance, environmentally friendly boiler. It will be able to use variable or damp mixtures such as bark as fuel. It will consume 62,500 tonnes dry weight of "A" grade timber, i.e. uncontaminated (no paint, varnish, etc.)." It will produce steam at 450°C (at a pressure of 65 bar!) which will drive a turbine virtually all year, running 8,200 hours a year, with electrical power of 6.2MW. The boiler will also produce hot water at over 90°C to dry around 130,000 tonnes of sawdust, which will be used to make pellets. The dry sawdust will be converted into wood "meal" which is then compressed into pellets.

This all concerns production, but it is of course necessary to feed these units. A whole range of residues from the timber industry will be delivered to the site (from forestry companies) for transformation into the raw materials. A trifling 350,000 tonnes of wood at 50% humidity will be consumed.

 art av du lux.pdf