Fuel dryers
Fuel drying lowers the boiler costs and also increases the burning plant availability.
Wet biomass is a demanding fuel. Maintaining low emission levels in flue gases requires proper boiler dimensioning and construction. Variations of fuel moisture make it difficult to control the combustion process. In wet or snowy seasons fuel moisture causes operational failures at combustion plants.
If a boiler has been designed for dry fuel, there are limited opportunities to burn a fuel with significantly higher moisture in the boiler, and vice versa. Therefore the investment cost of a burning plant strongly depends on the percentage of the anticipated fuel moisture.
It is possible to dry boiler fuel using low temperature energy recovered from flue gas condensing. An energy flow which cannot be utilized directly due to its temperature level can still be used in fuel drying. The drying can be a batch or continuous process.
In this process, the total efficiency of the combustion process is increased. At the same time, operating failures, caused by moisture or ice in the fuel, can be eliminated and plant productivity is improved.
We deliver
- band dryers, in co-operation with Godioli & Bellanti of Italy
- stack dryers, where the fuel is dried by warm air flowing through the stack bottom
- container dryers, where the fuel is dried by warm air circulating through fuel layers in a transportable container