Microchannel type hydrophobic membrane, preparation method, application and gas membrane method bromine extraction yield prediction method

• Main Authors: YU JIANGUO, LIN YUQING, KIM CHI-WOO
• Format: Patent
• Language: Chinese; English
• Published: 11.11.2022
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; INORGANIC CHEMISTRY; LAUNDERING; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TEXTILES; TRANSPORTING; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS

The invention discloses a micro-channel type PVDF (Polyvinylidene Fluoride) hydrophobic membrane for extracting bromine from bromine-containing raw materials, a preparation method of the micro-channel type PVDF hydrophobic membrane and a gas-membrane-method bromine extraction process, and provides a yield prediction model of the gas-membrane-method bromine extraction process for predicting the total bromine yield under different process conditions. Nanoscale particles grow on a membrane substrate and hydrophobic groups are grafted, so that the surface roughness of the membrane is improved, the surface energy is reduced, the hydrophobicity of the membrane is improved, and the super-hydrophobic capacity of the membrane is realized. The microchannel type hydrophobic membrane greatly prolongs the service life of the membrane and increases the flux of the membrane, and the prepared hydrophobic membrane can better improve the bromine extraction process, improve the bromine extraction efficiency and realize stable o