The requirements for upgrading biogas to biomethane or bio natural gas can be very complex. Input materials influence the biogas composition and its mandatory to comply with local gas quality regulations. Furthermore, project specific conditions have to be evaluated. The resulting dependencies are well known for us and we are able to identify the right biogas upgrading technology. This includes an efficient biogas pre-conditioning also removing VOCs as well as the final gas injection facility or in case of vehicle fuel the compression, storage and fuelling infrastructure. We also support you finding the right customer for your biomethane.

The unpressurized amine scrubbing is a very robust upgrading process for biogas working without continuous water consumption as a closed process. The carbon dioxide found in the biogas is removed by the amine with a very high selectivity, producing a product gas with highest methane concentrations and an off-gas which is almost pure carbon dioxide. A further characteristic attribute is a very low methane loss of the process which normally does not require any further off-gas treatment. 

The electrical energy consumption of the amine scrubbing is very low. The main energy source is heat for the desorption of the carbon dioxide from the amine. The required heat amount can be supplied by various renewable or conventional energy provided that the temperature level is sufficient. This allows utilizing waste heat from a combined heat and power plant or steam from an industrial process which makes the amine scrubbing perfect for being integrated in existing infrastructure. The majority of the required heat can be extracted afterwards at lower temperature levels to be used for external heating purposes.

How the synergies of the heat based and unpressurized amine scrubbing can be utilized most efficiently for your project is best to be explained in a personal conversation.