Installation of a ball mill for the research biogas plant “Unterer Lindenhof” on 09.06.2021
After detailed preliminary planning, a 37kW ball mill was set up at the “Unterer Lindenhof” research biogas plant in Eningen unter Achalm (Baden-Württemberg) on 09.06.2021. The biogas plant is operated by the University of Hohenheim (Stuttgart) and consists of two fermenters and one secondary fermenter. The two fermenters are operated under exactly the same conditions (same feeding, same agitators, same temperatures, etc). With this, an important or even the most important milestone in the research project “FlexCrash” was implemented. FlexCrash aims to optimise the flexible operation of a biogas plant via an intelligent feeding management system and is thus able to react better to fluctuations in the electric grid than, for example, via the gas storage tank alone. The ball mill can make a valuable contribution to this because substrates “crashed” with it has faster outgassing kinetics/gas velocity, so that the energy-rich biogases can be formed more quickly. One fermenter is operated without a ball mill, the other with it. The gas formation and gas quality of both digesters will be continuously recorded – so the influence of the ball mill can be determined precisely and in a practical environment.
We are looking forward to the research collaboration with the University of Hohenheim and see this as a great opportunity to confirm once again the benefits of our plant under “neutral eyes”.
All pictures by René Heller (University of Hohenheim). Kind thanks for providing us with those high quality pictures!