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Non-invasive temperature monitoring in fixed-bed reactors by electrical capacitance tomography

Title data

Weiss, Michael ; Fischerauer, Alice ; Jess, Andreas ; Fischerauer, Gerhard:
Non-invasive temperature monitoring in fixed-bed reactors by electrical capacitance tomography.
In: Measurement Science and Technology. Vol. 35 (2024) . - 095407.
ISSN 0957-0233
DOI: https://doi.org/10.1088/1361-6501/ad5224

Official URL: Volltext

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Project financing: Bundesministerium für Wirtschaft und Technologie

Abstract in another language

Knowledge of the temperature distribution in fixed-bed reactors is of great importance for process control and optimization in many processes of the chemical industry. The state of the art is defined by invasive measuring methods for temperature measurement in such reactors. However, all invasive methods influence both the structure of the fixed-bed and the flow conditions and thus falsify the measurement results compared to real undisturbed conditions in a fixed-bed, above all with regard to the radial temperature profile. In addition, the temperature distribution in the entire reactor is usually derived from a few discrete measuring points based on a model, which sometimes results in large deviations from reality. In this article, electrical capacitance tomography (ECT) is explored as an alternative, non-invasive measurement method to monitor the temperature distribution inside fixed-bed reactors. The method exploits the temperature dependence of the effective bulk permittivity of the reactor filling. By way of an example, this dependence has been investigated in this work for two different hydrogenation catalysts. A temperature-resistant ECT sensor has been designed to perform measurements under the influence of temperature. The investigations show that, with the aid of ECT, it is possible to detect relative temperature changes in the region of interest with the materials examined.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: ECT; electrical capacitance tomography; fixed-bed reactor; temperature profile; non-invasive; temperature monitoring
Institutions of the University: Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology
Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology > Chair Measurement and Control Technology - Univ.-Prof. Dr.-Ing. Gerhard Fischerauer
Faculties > Faculty of Engineering Science > Chair Chemical Engineering
Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess
Research Institutions > Research Units > Zentrum für Energietechnik - ZET
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 13 Jun 2024 05:05
Last Modified: 13 Jun 2024 05:05
URI: https://eref.uni-bayreuth.de/id/eprint/89572