bue Anlagentechnik GmbH
Am Anger 11
06249 Mücheln
Matthias Bernhardt – project leader
Telephone: +49-(0) 171 6383-048
E-mail: m.bernhardt@bue-anlagentechnik.de
Borko Georgiew – project leader
Telephone: +49-(0) 30 2250 5478-0
E-mail: info@ORmatiC.de
Bernd Felgentreff – project leader
Telephone: +49-(0) 341 9411-484
E-mail: tbs@bernd-felgentreff.de
Prof. Dr.-Ing. Jürgen Wiese – project leader
Telephone: +49-(0) 391 886-4373
E-mail: juergen.wiese@h2.de
Ingolf Seick – direct contact person
Telephone: +49-(0) 391 886-4365
E-mail: ingolf.seick@h2.de
Matthias Leifheit – project leader
Telephone: +49-(0) 345-777 96 42
E-mail: leifm@gmbu.de
Planned results
In order to counterbalance the fluctuating electricity generation from wind and photovoltaics, biogas plants are increasingly being equipped for demand-oriented electricity production. This so-called "flexibilisation" of biogas plants is accompanied by the installation of additional electrical power through new combined heat and power sytems (CHP) and other necessary measures, which together result in a not insignificant investment. In particular, the large increase of the gas storage volume, which depends on the degree of flexibility, and the installation of heat storage facilities, which may be necessary depending on the heat utilisation concept, should be mentioned here.
For this purpose, a new method (“flexigast”) for demand-oriented biogas production and optimised heat storage based on systematic variations of the fermentation temperatures in the fermenters is to be developed within the framework of the project. If the CHP is switched off according to the electricity schedule, the fermentation temperature is lowered in a targeted manner. When the CHP unit is put back into operation, the temperature is increased. These temperature variations should be combined with flexible feeding. The feeding variations should only be supportive and coordinated in accordance with the targeted temperature changes and should, in addition that, apply to common, practice-relevant substrates or residues with relatively slow fermentation behaviour. In the second half of the project, the method is to be tested on a pilot plant and on a liquid manure biogas plant.
A decrease in the average methane yield and process stability can be avoided by controlled process management. By using a heat pump, the potential and controllability of the required temperature reductions are improved and at the same time the temperature and the usable amount of heat for external consumers are significantly increased.
Key objectives are:
bue Anlagentechnik GmbH
ORmatiC GmbH
Technical counceling for systems engeneering
University Magdeburg-Stendal
GMBU e.V.
bue Anlagentechnik GmbH
ORmatiC GmbH
Technical counceling for systems engeneering
Investigations on the combination of the flexigast method with innovative renewable energy technologies and on the optimisation of heat management in the overall system
University Magdeburg-Stendal
Scientific foundation for method development, modelling and simulation and semi-technical testing
GMBU e.V.
Microbiological characterisation and molecular biological evaluation of the process biology