| 摘要 |
PURPOSE:To increase flow velocity of solute liquid and separate solute liquid effectively and efficiently without making the tube diameter of a membrane small by providing a spiral tube inside an osmosis membrane and flowing solute liquid into a ring passage between the spiral tube and the osmosis membrane tube. CONSTITUTION:A spiral tube 12 is provided concentrically inside a ceramic membrane tube 11 provided concentrically inside a cylindrical outer tube 10. Cold and hot heat medium 13 are flowed into the spiral tube 12, and solute liquid 15 is flowed into a ring passage 14 between the membrane tube 11 and the spiral tube 12, the temperature of solute liquid 15 being adjusted fit for separation. The solute liquid 15 flowed into the ring passage 14 flows along a spiral channel on the outer face of the spiral tube, generating turbulence to be strongly pressed to the inner face of the membrane tube 11 and self-clean the inside of the membrane 11, and the initial performance of the membrane tube 11 is maintained for a long time. Dissolved substances in the solute liquid 15 pass through the membrane tube 11, and penetrating liquid 16 flows through a ring passage 17 between the outer tube 10 and the membrane tube 11. |
