Title:
PREPARATION METHOD FOR HOLLOW FIBER INORGANIC MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2022/227838
Kind Code:
A1
Abstract:
A preparation method for a hollow fiber inorganic membrane, relating to a preparation method for a hollow fiber inorganic membrane. The objective of the present invention is to solve the problem that the existing membrane technology cannot simultaneously have high membrane flux and a high retention rate of a membrane. The method comprises: adding an inorganic material, a polymer, and a binder into an organic solvent, first performing ball milling, and then vacuumizing to obtain a membrane casting solution; using tap water as an internal coagulant, spinning the membrane casting solution by means of a spinneret and an injection pump, then using tap water and/or the organic solvent as an external coagulant, putting membrane filaments in the external coagulant, performing phase inversion under the temperature condition of 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 the temperature of 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. The present invention can obtain the preparation method for the hollow fiber inorganic membrane.
Inventors:
MA JUN (CN)
LV DONGWEI (CN)
ZHANG HUI (CN)
LV DONGWEI (CN)
ZHANG HUI (CN)
Application Number:
PCT/CN2022/078518
Publication Date:
November 03, 2022
Filing Date:
March 01, 2022
Export Citation:
Assignee:
HARBIN INST TECHNOLOGY (CN)
International Classes:
B01D67/00; B01D69/02; B01D69/08; B01D71/02
Foreign References:
| CN113058443A | 2021-07-02 | |||
| CN105195030A | 2015-12-30 | |||
| CN111514764A | 2020-08-11 | |||
| CN105749763A | 2016-07-13 | |||
| CN107335340A | 2017-11-10 | |||
| CN112569813A | 2021-03-30 | |||
| CN101708435A | 2010-05-19 | |||
| US20170014777A1 | 2017-01-19 | |||
| US20100330787A1 | 2010-12-30 |
Attorney, Agent or Firm:
HARBIN SONGHUAJIANG PATENT TRADEMARK OFFICE (CN)
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