| 摘要 |
The invention relates to a bubble column with perforated bottoms. Said bubbl e 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) hav e substantially the same distribution of holes, the cross sectional surfaces o f the individual holes range from 0.003-3mm2, especially 0.01-0.5 mm2, the ope n 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 liqui d areas. The bubble column can be used to perform gas-liquid reactions such as oxidation reactions with air, whereby preferably gas and liquid are conducte d in a cocurrent flow through said bubble column.
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