Study of Flame Characteristics Using Electric Capacitance Tomography

Liu, Jing; Shi, Liwei; Liu, Yan; Schlaberg, H. Iñaki; Lei, Jing

doi:10.1016/j.egypro.2015.02.035

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…In chemical reaction engineering, the method has already been used in particular to identify flow regimes in fluidized bed reactors [8]. Other applications are fill-level monitoring in weightless environments [9], the identification of flame characteristics [10], or the monitoring of the casting process of metal foundry parts [11].…”

Section: Introductionmentioning

confidence: 99%

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

Weiss,

Fischerauer,

Jess

et al. 2024

Meas. Sci. Technol.

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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.

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