HIGH-STRENGTH HOLLOW FIBER MOLECULAR SIEVE MEMBRANE AND PREPARATION METHOD THEREFOR

摘要

The invention relates to a high-strength hollow fiber molecular sieve membrane and its preparation method, characterized in that the support of the high-strength molecular sieve membrane has a multi-channel hollow fiber configuration. The preparation method comprises first preparing a crystal seed solution, then immersing the dry support with the multi-channel hollow fiber configuration in the crystal seed solution, and extracting and drying the support to obtain a crystal-seeded support; and finally placing the crystal-seeded support in a molecular sieve membrane synthetic fluid, performing hydrothermal synthesis, and taking out, washing and drying the product to obtain the high-strength hollow fiber molecular sieve membrane. The multi-channel hollow fiber support can provide high mechanical property, which greatly reduces the depreciation rate of the hollow fiber molecular sieve membrane equipment during use. Meanwhile, the multi-channel hollow fiber molecular sieve membrane prepared by the Invention possesses high loading density of permeation flux and membrane module and can reduce the production cost and improve the separation efficiency significantly, and thus lays the foundation for promoting the industrial application of the hollow fiber molecular sieve membrane.