Investigation and development of gravity separators with a standardized experimental setup

Abstract

This contribution presents a standardized experimental setup for the development of gravity separators. Two different optical measurement techniques for the characterization of the inlet and outlet dispersion with a droplet spectrum of 20‐2000 μm are used. The settling behaviour in a standardized batch settling test (ERICAA cell) serves as a basis for predicting the drop diameter resolved separation efficiency of a horizontal continuous separator. The latter (DN150, length 0.65 m) was operated and monitored with a phase fraction of up to 15% and a load of up to 17.0 m3 m−2 h−1. A paraffin oil with a viscosity of 10 mPa s was the dispersed and water the continuous phase. Sauter mean diameters of dispersions measured inline show a good agreement with those calculated from batch settling tests. Additionally, the modelled separation efficiencies are compared to the experimental results produced with the continuous separator.

Automation of a Procedure for the Experimental Investigation of Liquid‐Liquid Phase Separation

“…With this method, experimental investigations on phase separation behavior are performed in a standardized batch settling cell at laboratory scale using the obtained data for parametrization of the settler. Common designs of standardized batch settling cells are stirring cells and shaking cells, whereby experimental data evaluation is performed manually or by use of image processing methods [3][4][5][6][7]. In any case, performing experimental investigations on phase separation behavior comprising experimental procedure followed by evaluation of the obtained experimental data is a laborious and time-consuming task.…”

Energie‐ und Ressourceneinsparung durch Innovative und CFD‐basierte Auslegung von Flüssig/Flüssig‐Schwerkraftabscheidern

“…Zur Be‐ und Entlüftung sowie zur Flüssigkeitsentleerung sind beide Platten mit zentrischen Anschlüssen versehen. Der Leitungsdurchmesser beträgt 20 mm 18. Nach der Befüllung kann das Absetzverhalten charakterisiert werden.…”

“…Es wurden zwei unterschiedliche Messverfahren zur Bestimmung der Tropfengrößenverteilungen benutzt, zum einem mittels inline‐Bildererfassung die Auflicht‐Endoskopsonde der SOPAT GmbH, Berlin, und zum anderen die telezentrische Sonde der TU Kaiserslautern nach dem Durchlichtprinzip. Es wurde gezeigt, dass die Tropfenerzeugung und Tropfenmessungen reproduzierbar und unabhängig vom Versuchsort und Messtechnik waren 18.…”

Qualification of Image‐Based Measurement Systems for Characterization of Sprays

“…Up to now, image-based measurement methods are rather applied in liquid-liquid [9,10] and multiphase systems [11][12][13] together with bubble columns [14][15][16]36]. Analysis of droplet dispersions in a surrounding gas phase remain scarce.…”