Aalborg Energie Technik a/s Biomass Boiler Plant
With the high efficiency cogeneration plant, called the Woodpower project, in Rheinberg (Nordrhein-Westphalen), the use of fossil fuel is to be reduced by 25% at the site. The investment is a part of Solvay's strategy to serve their customers in a more sustainable and competitive way.
The plant will burn recycled wood, which will be sourced locally in order to minimise the environmental impact.
The AET Biomass Boiler will be designed for a fuel heat input of 90 MWt and a boiler efficiency of 92%. The AET Combustion System and AET Biomass Boiler will be optimised for the project and are similar in design to the boiler at Tilbury Green Power.
The boiler is designed with a residence time of 2 seconds at 850 oC and with Inconel cladding in the furnace to protect against corrosion.
The AET Biomass Boiler has a short start-up time and a quick shut-down time as there is almost no refractory in the boiler. This also reduces the risk of slagging, reduces the cost of maintenance considerably and at the same time increases the availability.
The in-house power consumption for the boiler island, including flue gas cleaning, fans etc. is less than 1.3% of the fuel heat input. This enables Solvay to produce more power for export and/or own factory.
The combination of the AET Combustion System, AET Biomass Boiler and AET SNCR DeNOx System ensures low emissions, which comply with the German 17. BlmSchV and the new BAT associated emission levels from EU. The heavy metals and Dioxines/Furanes will be well below the permissible emission limit values.
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