Long-term monitoring of a research biogas plant

Published: 24-11-2020| Version 1 | DOI: 10.17632/3ydxwchm2c.1
Bettina Stolze,
Ulf Müller


Long-term monitoring of a research biogas plant - basis for the temporal representation of the aging behavior of an oxidation catalyst in a biogas CHP The share of renewable energies in the electricity sector of Germany has risen steadily in recent years. The generation and use of biogas in CHP units is essential for the generation of electricity from biomass. When this bioenergy carrier is burned, ideally all combustible hydrocarbon-containing components are completely oxidized to CO2 and H2O. Under real conditions, however, combustion processes, as in the case of biogas-operated CHP units, always release unburned and partially oxidized substances. The TA-Luft specifies limit values for pollutant emissions, which were tightened in the 44th BImSchV in June 2019. The emission limit values cannot be complied through engine settings alone due to the target conflict between formaldehyde and nitrogen oxides. System settings with the aim of reducing nitrogen oxides result in an increase in formaldehyde emissions and the other way around. In order to be able to comply with both limit values, engine settings were adjusted to lower nitrogen oxide emissions and, at the same time, formaldehyde emissions were reduced by means of exhaust gas aftertreatment. The catalytic afterburning by oxidation catalysts was successfully established. These catalysts go through an aging process that has not yet been fully investigated and described. The catalytic performance of an oxidation catalyst in a CHP of a research biogas plant was monitored for 3 years. The catalytic results and informations about the catalyst are shown in “Zeitliche Darstellung des Alterungsverhaltens eines Oxidationskatalysators in einem Biogas-BHKW“ DOI: 10.1002/cite.201900152. All relevant parameters of the research biogas plant in this period of time are listet in this data publication.