Residence Time Characteristics of the Novel Archimedean Screw Crystallizer/Reactor

This work presents a novel design of a continuous crystallizer, the Archimedean screw crystallizer reactor (ASKR) with integrated Archimedean screw as conveying element. By the screw, the axial motion of the product solution is initiated, and an undesired axial mixing is restricted. This structure r...

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Bibliographic Details
Published inChemie ingenieur technik Vol. 92; no. 8; pp. 1074 - 1082
Main Authors Meise, Marius, Jäger, Luca, Wilk, Andreas, Heitmann, Torsten, Scholl, Stephan
Format Journal Article
LanguageEnglish
Published 01.08.2020
Subjects
Archimedean screw crystallizer/reactor
Continuous crystallization
Crystallizer
Residence time distribution
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Summary:This work presents a novel design of a continuous crystallizer, the Archimedean screw crystallizer reactor (ASKR) with integrated Archimedean screw as conveying element. By the screw, the axial motion of the product solution is initiated, and an undesired axial mixing is restricted. This structure results in a narrow residence time distribution and, thus, promotes a defined product quality. In order to quantitatively assess the flow characteristics of the crystallizer and to highlight the influence of variable operating parameters such as rotational speed and volumetric flow, investigations of the residence time behavior with variation of the operating parameters are reported. The novel design of a continuous crystallizer, the Archimedean screw crystallizer/reactor (ASKR), is investigated in terms of residence time behavior at various operational parameters. The results show a decent narrow residence time distribution throughout a broad operating range.
ISSN:0009-286X
1522-2640
DOI:10.1002/cite.202000092