Anaerobic digestion of wet biomass for heat generation

The biomass is fermented in a state-of the-art anaerobic digestion installation to produce biogas . The installation consists of storage and pre-treatment, digestion installations, combustion of biogas and post treatment and storage of digestate (i.e. dewatering, drying, in some cases hygenisation and storage). In average the residence time of the organic waste in the digestor is around 30 days and biogas is produced.

Biogas consists mainly of methane (in average 60%) and carbon dioxide (33-38%) in addition to contaminants such as sulphur, water vapor and oxygen. The biogas is desulfurized and it is fed into a biogas boiler to produce heat. Mostly steam boilers are used for the industrial applications. The Activities Decree on emissions for combustion plants requires that the boiler installations with a nominal thermal input power of >1 MWth comply with the emission limit values stated in the Decree.

All information in the datasheets is also available in ESDL (Energy System Discription Language). You can find them in the Energy Data Repository (EDR).