| 摘要 |
PURPOSE:To keep high liq. permeation by rotating a hollow yarn module in a pressure vessel, and increasing the flow velocity on the membrane surface without practically increasing the consumption of power. CONSTITUTION:Hollow yarn separation membranes 7 are bundled, and the upper and lower ends are embedded in end plates 8 and 9 and fixed. The end plate 8 of the hollow yarn module 6 with the upper end closed and the lower end communicated with a permeated liq. chamber 10 is fixed to a supporting plate 12, and a coupler 11 is mounted to surround the end plate 9. A solid-rod rotating shaft 13 is fixed to the supporting plate 12, the hollow-cylinder rotating shaft 14 is fixed to the coupler 11, the rotating shafts 13 and 14 are connected to a rotating device such as a motor, and the hollow yarn module 6 is turned on its axis. The raw liq. introduced into the pressure vessel 1 from a raw liq. inlet pipe 4 is separated by the separation membrane 7, and the permeated liq. is discharged to the outside of the pressure vessel 1 from the inside of the separation membrane 7 through the permeated liq. chamber 10 and the inside of the rotating shaft 14. The concd. liq. is discharged to the outside of the pressure vessel 1 from a concd. liq. outlet pipe 5.
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