Bubble column and use thereof

B - Operations – Transporting – 01 – J

Patent

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Details

B01J 10/00 (2006.01) B01J 19/24 (2006.01) C01B 15/023 (2006.01)

Patent

CA 2345092

The invention relates to a bubble column with perforated bottoms. Said bubble column can be operated in a counter flow. The space-time yield of gas-liquid reactions can be increased substantially when the perforated bottoms (5) have substantially the same distribution of holes, the cross sectional surfaces of the individual holes range from 0.003-3mm2, especially 0.01-0.5 mm2, the open surface of the bottoms amounts to 3-2 %, especially 3-10 % and the bubble column is provided with flow passages (6) for liquids between adjacent liquid areas. The bubble column can be used to perform gas--liquid reactions such as oxidation reactions with air, whereby preferably gas and liquid are conducted in a cocurrent flow through said bubble column.

L'invention concerne une colonne à bulle à fonds perforés, que l'on peut faire fonctionner à contre-courant. Le rendement de l'espace-temps de réaction gaz-liquide peut être sensiblement augmenté lorsque les fonds perforés (5) présentent une répartition pratiquement régulière de leurs trous, que la surface de section des différents trous est de 0,003 à 3 mm<2>, en particulier 0,01 à 0,5 mm<2>, que la surface ouverte des fonds correspond à 3-20 %, en particulier 3-10 %, et que la colonne à bulles comporte des passages à liquide (6) entre deux zones à liquide voisines. Cette colonne à bulles peut être utilisée pour conduire des réactions gaz-liquide, telles que des réactions d'oxydation avec de l'air, le gaz et le liquide étant alors, de préférence, guidés à travers la colonne en un même courant.

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