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nature : also known as the bubble cap towers and foam covered tower. A tower equipment. Normally used to vapor (or gas) and the liquid in close contact in order to promote their mutual role of the mass transfer. The level of a multi-storey tower with trays, there are a number of boards for vapor (or gas) through the short tube, on the bottom edge of a cover Chifeng or small bubble shafts, and with the overflow tube. The operation, the liquid from the tower into the upper row, the overflow pipe PV panels fell, and the accumulation of fluid layer board, the liquid seal formed; Steam (or gases) from the bottom to enter through the blister on the bottom edge of Chifeng or small trough scattered into small bubbles, and full access to liquid and liquid layer through which to liquid level, and then go up to a layer tray. Short tube installed in the tower, saying within the overflow (see figure); Also mounted on the tower, said outside the overflow. Blister widely used in distillation towers and gas absorption.
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