| 摘要 |
A perforated cylinder having a plurality of unit perforated cylinders arranged in series and having a pair of upper and lower slits formed in the tangential direction in the sidewall. The upper portion of the cylinder is sealed and the lower portion is opened. A gas charging chamber having a gas feed pipe and a liquid feed pipe is provided at the outside bottom of the first unit cylinder. A gas-liquid separation chamber having a cleaned gas discharge pipe and a separated liquid discharge pipe is located towards the top of the last unit cylinder. Gas-liquid separation chambers having separated liquid discharge pipes are provided at the top of the cylinder in the center and at the outside of the next stage cylinder and gas passages are provided at the outside of the perforated cylinders located between said two chambers and a liquid feed pipe is connected to the bottom of the unit perforated cylinder in the middle.
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