Use in Biomass Plants

Use in Biomass Plants

Use of the florafuel Procedure in Biomass Plants 

The florafuel Procedure has the potential to be incorporated cost-efficiently in biomass plants, too. The material flows, namely landscape conservation materials, are divided up for processing at the time of delivery as shown in the following diagram. 

Diagram 1: The florafuel Procedure incorporated into a biomass plant

 

The heating values of the optimised biomass fuels (grass, grass silage, foliage and fermentation waste) lie at between 17 to around 18 MJ/kg (wf), depending on the processed biomass. By comparison, the heating value of wood pellets lies at approximately 17.5 MJ/kg to 19.5 MJ/kg (wf). The energy sources generated can be supplied as mono-fuel or as mixed fuel, such as foliage/wood pellets or grass/wood briquettes.

Table 1: Heating value and ash content of selected florafuel fuels

 

The florafuel Procedure reduces the ash content in comparison with the initial material, as mineral particles (for example, sand and stones) are washed out. Foreign bodies such as metals are also flushed out. This increases the fuel quality of the pellets and briquettes considerably. Furthermore, separating foreign matter minimizes the wear costs of the plant. Disposal of the washing water is not necessary, as this can be treated and reused again directly in the plant.

Contents of the Energy Sources

Known harmful substances which are set free during combustion, such as chlorine and potassium, are significantly reduced with the florafuel processing procedure. This is important, as chlorine can have a corrosive effect during combustion.

Table 2: Reduction of harmful substances with selected florafuel pellets

 

As the table shows, the potassium content is reduced by up to 84 percent using the florafuel Procedure. Potassium influences ash melting behaviour and, at elevated values, may cause sintering (deposits) on the heat exchange surfaces and on the grates.

Cross references