| 摘要 |
The invention relates to a multiple bed downflow reactor comprising vertical ly spaced apart reaction beds (2a, 2b), preferably beds of catalyst particles, and, between adjacent beds, a mixing device (5) for mixing fluids, the mixin g device (5) comprising:(i) a substantially horizontal collection tray (6),(ii ) a swirl chamber (7) for mixing liquid arranged below the collection tray (6) , having an upper end part that is in direct fluid communication with the uppe r surface (9) of the collection tray (6) and an outlet opening (10) at its low er end, and(iii) a substantially horizontal distribution tray (13) located belo w the swirl chamber (7), which distribution tray (13) is provided with a plurality of openings or downcomers (14) for downward flow of liquid and gas,in which reactor each reaction bed rests upon a support tray (6) provide d with a central opening (25) and which reactor further comprises open-ended pipes (23) extending through each central opening (25) such that a vertical chute (24) is formed from the reaction bed (2a) above the mixing device (5) to the reaction bed (2b) below the mixing device (5), wherein the swirl chamber (7) of the mixing device (5) is arranged around the open-ended pipe (23). Th e invention further relates to the use of such a reactor in hydrocarbon processing.
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