SynGas CHP Module
The CHP module is characterised by its particularly high electrical energy recovery from the dried sewage sludge. The synthesis gas produced in the fluidised bed reactor is converted into electricity and heat after a purification stage in a highly efficient combined heat and power plant (CHP). The electrical energy is used to cover the plant’s own needs or to feed into the grid, the heat for sludge drying.
Since a large part of the energy contained in the synthesis gas is converted into electricity in the CHP module, less thermal energy is available for drying the sewage sludge.
This energy deficit can be covered by using the available energy from digester gas. The waste heat from the drying process is in turn available for heating the digestion towers.
Thus, the entire system remains thermally self-sufficient and the use of further energy sources is avoided.
If heat has to be extracted for heating the digesters, the digesters can henceforth be heated using the recoverable low-temperature waste heat from the sewage sludge drying process. This means that the entire system remains thermally self-sufficient without the need for an additional energy source.