| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-stage tray of a plate column and a different phase system contact method using the tray capable of realizing an efficient different phase system contact of a gas-liquid, a liquid-liquid and a solid-liquid-gas. SOLUTION: A porous film 3 having pores of which the pore diameter is 0.1-1,000μm is used for a shelf plate 1 in the plate column. The efficient different phase system contact of the gas-liquid, the liquid-liquid and the solid- liquid-gas becomes possible by refining various kinds of gas, a raw material liquid, etc., by this porous film 3.
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