Module for pore diffusion membrane separation to fractionate component molecules in polymer solution

摘要

PROBLEM TO BE SOLVED: To provide a pore diffusion membrane separation module, in which there is enhanced a fluid fractionation effect capable of fractionating the dissolved component molecules of high molecular weight, and in which the film used is a flat porous one.MEANS FOR SOLVING THE PROBLEM: A pore diffusion membrane separation module is characterized: in that a hydrophilic macromolecule porous film having an average pore diameter of 3 times or more than the high molecule to be fractionated is charged; in that the wall portion of the primary side passage of said porous film contacts the smooth film surface exceeds the length of 50 cm; and in that the take-out port of the recovery liquid to be carried through said film to the secondary side is provided in a plurality at a predetermined length.SELECTED DRAWING: Figure 2