Authors: Vietinghoff, Niclas von
Lungrin, Waldemar
Schulzke, Raphael
Tilly, Jonas
Agar, David W.
Title: Photoelectric sensor for fast and low-priced determination of bi- and triphasic segmented slug flow parameters
Language (ISO): en
Abstract: Applying multiphase systems in microreactors leads to an intensification of heat and mass transport. Critical aspects of the well-studied segmented slug-flow, such as bubble generation and pump control, can be automated, provided a robust sensor for the reliable determination of velocity, phase lengths, and phase ratio(s) is available. In this work, a fast and low-priced sensor is presented, based on two optical transmission sensors detecting flow characteristics noninvasively together with a microcontroller. The resulting signal is mainly due to refraction of the bubble-specific geometries as shown by a simulation of light paths. The high performance of the processing procedure, utilizing the derivative of the signal, is demonstrated for a bi- and triphasic slug flow. The error of <5% is entirely reasonable for the purpose envisaged. The sensor presented is very fast, robust, and inexpensive, thus enhancing the attractiveness of parallelized capillary reactors for industrial applications.
Subject Headings: Segmented slug flow
Optoelectric sensor
Online velocity measurement
Multiphase systems
Capillary reactor
URI: http://hdl.handle.net/2003/39867
http://dx.doi.org/10.17877/DE290R-21758
Issue Date: 2020-12-04
Rights link: https://creativecommons.org/licenses/by/4.0/
Appears in Collections:Lehrstuhl Chemische Verfahrenstechnik

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