In-situ Biogas Sensing System for Enabling Spatially Resolved Online Determination of the Gas Composition of the Fermenter

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• 作者：Benedikt Bierer ; Alvaro Ortiz Perez ; Jü ; rgen Wö ; llenstein ; Stefan Palzer ; ^{stefan.palzer@imtek.uni-freiburg.de}
• 关键词：biogas ; photoacoustic ; intrinsically safe
• 刊名：Procedia Engineering
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：168
• 期：Complete
• 页码：1634-1637
• 全文大小：478 K
• 卷排序：168

文摘

Biogas plants play a crucial role in the renewable technology sector because they are capable to continuously deliver electricity and heat independent of the weather conditions. For a constant good quality and quantity the operating parameters of the biogas have to be controlled. For this currently only ex-situ measurement system are available. These systems are expensive and do not measure continuously. He we present an online measurement system for the main components of biogas, which are methane (CH4) and carbon dioxide (CO2). This system uses a two chamber LED-photoacoustic detection scheme, including sensors for humidity, temperature and pressure.