Biogas desulphurization

Case study no. 13:
Biogas desulphurization

Initial situation

During the production of biogas, toxic and corrosive hydrogen sulphide gas is produced in the fermenter, which must be removed from the gas flow.

Otherwise, the operating costs in the CHP unit for oil changes and spark plugs will increase, as will the costs for repairs and downtime due to corrosion. In addition, combustion would produce sulphur dioxide, which reacts with water to form sulphurous acid and pollutes the environment even in low concentrations.



Task definition

The hydrogen sulphide concentration must be reduced to below 100-250ppm before the engine of the CHP unit. This is to be realized by a biological gas scrubber. The temperatures in the scrubber must be precisely maintained in order to achieve the necessary high level of efficiency.



The corrosive washing solution is heated with the aid of a Calorplast tube plate heat exchanger.




The Calorplast tube plate heat exchanger made of PE-RT or PVDF is used in numerous biogas desulphurization plants around the world.ventilation systems

Anlage Biogas Entschwefelung calorplast-waermetechnik
Conceptual image of idea and innovation