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http://hdl.handle.net/1942/31431
Title: | Scalability of 3D printed structured porous milli-scale reactors | Authors: | Potdar, Aditi THOMASSEN, Leen Kuhn, Simon |
Issue Date: | 2019 | Publisher: | ELSEVIER SCIENCE SA | Source: | Chemical engineering journal (1996. Print), 363 , p. 337 -348 | Abstract: | This study addresses the scalability of in-house designed, and 3D printed structured porous reactors for liquid-liquid reactions. The base structure of these porous reactors consists of cylindrical fibres in defined geometrical arrangements. Their scale-up was realized by increasing the reactor diameter by a factor of 1.5 and 2 respectively while keeping the fibre dimensions constant. Also, the effect of altering the fibre dimensions in proportion to the scale-up factor was assessed. The reactors were characterized in terms of their biphasic heat and mass transfer properties. In stratified flow, the scaled-up structured porous reactors exhibited high interfacial mass transfer coefficients (k(L)a) at residence times <10 s, whereas in Taylor flow an overall drop in k(L)a values was observed. Furthermore, the highest biphasic heat transfer coefficients were found for the structured porous reactors with a scale-up factor of 1.5. Moreover, the structured porous reactors were applied to industrially relevant reactions. For the oxidation of nonanol, the scaled-up reactors showed an overall drop in yield, nevertheless with two folds production rate at same pressure drop. For the relatively slow C-N cross-coupling reaction, larger yields were realized by arranging scaled-up reactors in series at same total residence time. Specifically, an arrangement of 8 reactors with a scale-up factor of 2 in series resulted in six times higher production rate than a conventional packed-bed reactor but without any additional pressure drop. For the considered range of residence times, keeping the fibre dimensions constant while increasing the reactor diameter was observed to be advantageous. | Notes: | Kuhn, S (reprint author), Katholieke Univ Leuven, Dept Chem Engn, Celestijnenlaan 200F, B-3001 Leuven, Belgium. simon.kuhn@kuleuven.be |
Keywords: | Scale-up; Liquid-liquid reactions; Interfacial mass transfer; Biphasic;heat transfer; Structured porous reactors; 3D printed reactors | Document URI: | http://hdl.handle.net/1942/31431 | ISSN: | 1385-8947 | e-ISSN: | 1873-3212 | DOI: | 10.1016/j.cej.2019.01.082 | ISI #: | WOS:000457866400034 | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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1-s2.0-S1385894719301056-main.pdf Restricted Access | Published version | 2.91 MB | Adobe PDF | View/Open Request a copy |
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