Diagnostic concept for dynamically operated biogas production plants

verfasst von

Astrid Bensmann, Richard Hanke-Rauschenbach, Robert Heyer, Fabian Kohrs, Dirk Benndorf, Robert Kausmann, Matthias Plöchl, Monika Heiermann, Udo Reichl, Kai Sundmacher

Abstract

With today's growing focus on on-demand energy production, the dynamic operation of biogas plants is becoming more and more important. Detecting unacceptable load changes and so preventing process failures is vital. In the present contribution, we propose an operating scheme that includes the detection of disturbances and intervention. This is then evaluated systematically with the help of a mathematical model for step changes in the organic loading rate. We summarize the qualitative results for each diagnosis variable in an operation diagram, enabling an intuitive, comprehensive comparison. Of the diagnosis variables analyzed, we find that the most promising for identifying incipient process failures in biogas plants are the volatile fatty acids to total alkalinity ratio (VFA/TA), followed by the ratio of methane to carbon dioxide γ in the biogas. In addition, the combination of the online measured variables pH value and gas composition can reveal disturbances early on in a wide range of different conditions.

Organisationseinheit(en)

Fachgebiet Elektrische Energiespeichersysteme

Externe Organisation(en)

Otto-von-Guericke-Universität Magdeburg
Leibniz-Institut für Agrartechnik Potsdam-Bornim (ATB)
BioenergieBeratungBornim GmbH
Max-Planck-Institut für Dynamik komplexer technischer Systeme

Typ

Artikel

Journal

Renewable energy

Band

96

Seiten

479-489

Anzahl der Seiten

11

ISSN

0960-1481

Publikationsdatum

10.2016

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Erneuerbare Energien, Nachhaltigkeit und Umwelt

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.1016/j.renene.2016.04.098 (Zugang: Geschlossen)