公开(公告)号：US20240238733A1

公开(公告)日：2024-07-18

申请号：US18557121

申请日：2022-03-01

Applicant: Harbin Institute of Technology

Inventor： Jun MA ,  Dongwei LV ,  Hui ZHANG

IPC: B01D67/00 ,  B01D71/02

CPC classification number: B01D67/0079 ,  B01D67/0093 ,  B01D71/021 ,  B01D2325/10

Abstract: A preparation method for a hollow fiber inorganic membrane to solve the problem that the existing membrane technology cannot simultaneously have high flux and a high retention rate, including the steps of: adding an inorganic material, a polymer, and a binder into an organic solvent, first performing ball milling, and then vacuumizing to obtain a casting solution; using tap water as an internal coagulant, spinning the casting solution, then using tap water and/or the organic solvent as an external coagulant, putting membrane filaments in the external coagulant, performing phase inversion under 19.5-20.5° C., taking out the membrane filaments, and then drying same to obtain a basement membrane green body; and calcining the basement membrane green body at 800-950° C. to obtain a hollow basement membrane, and preparing a separation layer on the outer surface of the hollow basement membrane to obtain the hollow fiber inorganic membrane.