Bubble flow mechanisms in trickle beds—an experimental study using image processing
The mechanisms of bubble motion in concurrent gas–liquid down flow through trickle beds are investigated. The laboratory reactor is a structured quasi-two-dimensional porous medium with an average pore diameter close to the values encountered in trickle beds. The accuracy of the reactor design is de...
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| Veröffentlicht in: | Chemical engineering science 2002-08, Vol.57 (16), p.3347-3358 |
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| creator | Benkrid, K Rode, S N. Pons, M Pitiot, P Midoux, N |
| description | The mechanisms of bubble motion in concurrent gas–liquid down flow through trickle beds are investigated. The laboratory reactor is a structured quasi-two-dimensional porous medium with an average pore diameter close to the values encountered in trickle beds. The accuracy of the reactor design is demonstrated by hydrodynamic investigations on the reactor scale where it is shown that the flow regimes encountered and the experimental pressure drop are comparable to those observed in trickle beds. The investigations on the pore scale are focused on the dispersed bubble flow regime where the liquid flow is continuous and the gas is divided into elongated bubbles. The bubble motion is recorded with the aid of a high-speed video camera and the images are processed and analysed in a quantitative manner. The investigations clearly show that in dispersed bubble flow, the bubbles are frequently pulsing on the pore scale. The mechanism of this flow pattern is discussed. |
| doi_str_mv | 10.1016/S0009-2509(02)00204-X |
| format | Article |
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The mechanism of this flow pattern is discussed.</description><subject>Applied sciences</subject><subject>Bubble</subject><subject>Chemical and Process Engineering</subject><subject>Chemical engineering</subject><subject>Engineering Sciences</subject><subject>Exact sciences and technology</subject><subject>Hydrodynamics</subject><subject>Multiphase reactors</subject><subject>Porous media</subject><subject>Reactors</subject><subject>Trickle bed</subject><subject>Visualisation</subject><issn>0009-2509</issn><issn>1873-4405</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNqFkM1O3TAQha2qSL2lfYRK3hSVRWDGia-dVQWIFqQrsQAkdpbjTMAlP7d2QsuOh-gT8iQ4XESXrEYz882Zo8PYF4Q9BFzunwNAmQkJ5TcQuwACiuzqHVugVnlWFCDfs8Ur8oF9jPFXapVCWLDLw6mqWuJNO_zhHbkb2_vYRe57PgbvbtOqojo-PvyzPae_awq-o360LY_jVN_zKfr-mvvOXhNfh8FRnAef2FZj20ifX-o2O_9xfHF0kq3Ofp4eHawyV-TlmGlhk4-8cqVySgJpWRGgtFiopm60RLe0uZS61pVzqDGvkRRqKhUKofNttrtRvbGtWSdjNtybwXpzcrAy8wywXKpCyDtM7M6GTSZ_TxRH0_noqG1tT8MUjVBQ5HpZJFBuQBeGGAM1r8oIZo7bPMdt5iwNCPMct7lKd19fHtjobNsE2zsf_x_nJZaoZ_3vG45SLneegonOU--o9oHcaOrBv_HpCUzqlH4</recordid><startdate>20020801</startdate><enddate>20020801</enddate><creator>Benkrid, K</creator><creator>Rode, S</creator><creator>N. 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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Bubble Chemical and Process Engineering Chemical engineering Engineering Sciences Exact sciences and technology Hydrodynamics Multiphase reactors Porous media Reactors Trickle bed Visualisation |
| title | Bubble flow mechanisms in trickle beds—an experimental study using image processing |
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