Case study No. 11:
Biogas small

Initial situation

In the production of biogas, toxic and corrosive hydrogen sulphide gas and ammonia are produced in the fermenter, which must be removed from the gas stream.

This is used to prevent high operating costs during the subsequent combustion of the biogas. Furthermore, the combustion produces sulphur dioxide, which puts a burden on the environment even in low concentrations.


Hydrogen sulphide and ammonia must be removed from the bio gas. This is to be achieved by condensation. For this purpose, the biogas is brought under the dew-punk temperature of the hydrogen sulphide.

After that, it is slightly heated again to reduce the relative humidity of the biogas so that it can be used as a fuel without any problems. For this purpose, the operator needs heat exchangers that are corrosionresistant. At the same time, they must be pressure-resistant and easily cleanable, as the gas can become very dirty.


Calorplast bio gas heat exchangers are the perfect solution. Due to the integrated solid plastic module, both the cooling with condensation and the subsequent heating can be realized. At the same time, the housing design offers easy handling. All this in a completely corrosion-proof environment


The customer can use the biogas exchanger without interference for many years.