Liquid backmixing in an inclined rotating tubular fixed bed reactor - Augmenting liquid residence time via flow regime adjustment
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
The liquid residence time and the backmixing in an inclined rotating tubular fixed bed reactor operated with gas-liquid co-current downflow are studied experimentally. This novel reactor concept is introduced to extent the process intensification strategies of chemical multiphase reactors. The intermittent catalyst immersion due to rotation induces a continuous refreshment of the liquid at the catalyst surface and enhances the access of the gas phase to the catalyst in the drained section of the fixed bed. Depending on inclination angle and rotational velocity, different flow regimes are observed. In particular, the flow regimes with stratified gas-liquid flow can be utilized to enhance the performance of the reactor for heterogeneous catalytic reactions.The backmixing study is based on the method of the imperfect tracer pulse and the propagation of the tracer is measured by low-intrusive wire-mesh sensors. Compared to conventional trickle bed reactors, liquid residence time and axial dispersion are increased by the inclination and rotation. The effects of reactor inclination angle and rotational velocity as well as of particle size and liquid superficial velocity on the liquid backmixing in the inclined rotating tubular fixed bed reactor are shown in detail.
Details
Original language | English |
---|---|
Pages (from-to) | 2-10 |
Number of pages | 9 |
Journal | Chemical Engineering and Processing - Process Intensification |
Volume | 94 |
Publication status | Published - 1 Jul 2015 |
Peer-reviewed | Yes |
Keywords
ASJC Scopus subject areas
Keywords
- Axial dispersion, Flow regimes, Gas-liquid flow, Liquid backmixing, Process intensification, Residence time