| abstract |
The present invention relates to a bubble column having a perforated bottom. The bubble column can be operated in countercurrent. The spatio-temporal yield of the gas-liquid reaction has a hole in which the lower perforations 5 have substantially the same distribution, the cross-sectional area of each hole is 0.003-3 mm 2, in particular 0.01-0.5 mm 2, and the open surface of the lower part is 3-2% Especially up to 3 to 10%, it can increase substantially if a flow passage 6 for liquid is provided between the liquid regions adjacent to the bubble column. Bubble columns can be used to conduct gas-liquid reactions, such as oxidation reactions using air, whereby gases and liquids are preferably carried out co-currently through the bubble column. |