Skip to Main content Skip to Navigation
Journal articles

Gas-Liquid Flow Characterization and Mass Transfer Study in a Microreactor for Oligomerization Catalyst Testing

Abstract : The acceleration of the development of ethylene oligomerization processes by homogeneous catalysis requires a complete characterization of the catalytic system. This work proposes to use segmented gas-liquid flow in microchannels to achieve high experimental throughput for catalyst testing. Gas-liquid flow was studied in order to validate the microreactor setup. Results showed that bubble and slug lengths vary linearly with the superficial velocities ratio following the Garstecki et al. model [21]. The impact of lateral feed in Taylor flow was explored to mimic the catalyst feed in an oligomerization test. The experiments showed that the volume of the liquid slugs increased proportionally to the additional flow rate, thereby suggesting that the majority of the liquid in the lateral feed is ultimately retained in the liquid slug. A study of mass transfer showed that the volumetric mass transfer coefficient is between 0.27 and 0.55 s−1. These values lead to a Hatta number < 0.5, thus confirming the possibility of conducting the ethylene oligomerization reaction in the chemical kinetic regime. Finally, an ethylene oligomerization test performed in the microreactor showed that the continuous microreactor system can be used for catalyst screening purpose.
Complete list of metadata

https://hal-ifp.archives-ouvertes.fr/hal-03286854
Contributor : Catherine Belli <>
Submitted on : Thursday, July 15, 2021 - 11:12:40 AM
Last modification on : Tuesday, July 20, 2021 - 3:56:50 AM

File

 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2023-05-24

Please log in to resquest access to the document

Identifiers

Collections

Citation

Mahmoud Kamaleddine, Charles Bonnin, Typhène Michel, Léna Brunet-Errard, Joëlle Aubin, et al.. Gas-Liquid Flow Characterization and Mass Transfer Study in a Microreactor for Oligomerization Catalyst Testing. Chemical Engineering and Processing: Process Intensification, Elsevier, 2021, 166, pp.108476. ⟨10.1016/j.cep.2021.108476⟩. ⟨hal-03286854⟩

Share

Metrics

Record views

16