Hollow fiber zeolite membrane assembly and technology thereof

A molecular sieve and membrane module technology, applied in the field of inorganic membranes, can solve problems such as the sealing of hollow fiber molecular sieve membranes, achieve the effects of reducing processing costs, facilitating disassembly and replacement, and increasing the filling area

Active Publication Date: 2013-06-19
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hollow fiber molecular sieve membrane module in order to improve the deficiencies of the prior art, solve the sealing problem of the hollow fiber molecular sieve membrane, and at the same time solve the modular assembly of the membrane elements, and realize the convenient and quick disassembly and replacement of the membrane elements

Method used

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  • Hollow fiber zeolite membrane assembly and technology thereof
  • Hollow fiber zeolite membrane assembly and technology thereof
  • Hollow fiber zeolite membrane assembly and technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The schematic diagram of the axial section of the hollow fiber molecular sieve membrane module is as figure 1 Shown: It is composed of hollow fiber molecular sieve membrane element, orifice plate, shell, jacket, end and head: the shell has a jacket, and the hollow open end of the hollow fiber molecular sieve membrane element is fixed in the orifice plate and installed The orifice plate with membrane element is placed in the shell, the upper end of the shell, the orifice plate and the end are sealed by screw; the lower end of the shell and the head are sealed by the screw; the middle of the end is provided with a vacuum interface and the end The middle part is provided with a valve, the lower part of the jacket is provided with a heat exchange medium inlet, the lower part of the jacket is provided with a heat exchange medium outlet, the lower part of the shell is provided with an organic solvent inlet, and the upper part of the shell is provided with an organic solvent out...

Embodiment 2

[0029] According to the method of Example 1, 3000 hollow fiber NaA molecular sieve membranes with an outer diameter of 1.6mm and a length of 600mm were blocked with epoxy resin sealant at one end, arranged in a circle, and the hollow open end was filled with a ring Oxygen resin, let stand for 1 day, wait for the epoxy resin to solidify to complete the packaging of the hollow fiber molecular sieve membrane element; fix the membrane element to the stainless steel orifice plate with a clamp, and install the orifice plate in a stainless steel shell with a length of 750mm ( A hollow fiber molecular sieve membrane module with one membrane element (the membrane element contains 3000 hollow fiber molecular sieve membranes) is formed on the jacket gap d (180 mm). The membrane module is used for steam permeation dehydration of 90wt.% isopropanol / water system and shows good separation performance. When the feed temperature is 120°C and the feed pressure is 0.2MPa, the water content on the ...

Embodiment 3

[0031] According to the method of Example 1, 100 hollow fiber T-type molecular sieve membranes with an outer diameter of 1.8 mm and a length of 200 mm were encapsulated on a 7-hole orifice plate to form a hollow fiber molecular sieve membrane module with 7 membrane elements. The difference from Embodiment 2 is that the membrane element is fixed on the stainless steel orifice plate with silicone sealant, and the length of the stainless steel shell (the jacket gap d is 5 mm) is 250 mm. This module is used for the pervaporation dehydration of 90wt.% ethanol / water system, and the feed liquid circulation mode is adopted. When the feed temperature is 70°C and the feed pressure is 0MPa, the water content of the raw material can be reduced to less than 0.3wt.%, The relationship between the water content of the raw material and the operating time is as follows: Figure 5 Shown.

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Abstract

The invention relates to a hollow fiber zeolite membrane assembly and an organic solvent pervaporation and dehydration technology thereof. The hollow fiber zeolite membrane assembly comprises a hollow fiber zeolite membrane component, a hole plate, a shell, a clamping sleeve, a socket and a sealing end. The invention also provides the organic solvent pervaporation and dehydration technology utilizing the hollow fiber zeolite membrane assembly. An organic solvent takes a gas state or a liquid state form to enter the membrane assembly through the inlet of the organic solvent, permeating component permeates through the hollow fiber zeolite membrane so as to shift through a vacuumizing connector, the organic solvent after dehydration flows out the assembly through the outlet of the organic solvent, a heat transferring medium gets in and out a membrane module membrane assembly through the inlet and outlet of the heat transferring medium, the operation temperature in the hollow fiber zeolite membrane assembly is 30-150 DGE C, and the operating pressure is 0-0.3Mpa. The hollow fiber zeolite membrane assembly provided by the invention adopts building block design, the connection and assembly of the assembly are simplified, the sealing problem of the hollow fiber zeolite membrane in an application process is solved, and the industrialized application of the hollow fiber zeolite membrane is facilitated.

Description

Technical field [0001] The invention relates to a hollow fiber molecular sieve membrane module and an organic solvent pervaporation dehydration process thereof, which mainly solves the sealing problem of the hollow fiber molecular sieve membrane in the pervaporation organic solvent dehydration process, and belongs to the field of inorganic membranes. Background technique [0002] Membrane separation is a separation technology developed in recent years, it can be separated according to the molecular dynamics diameter of the substance or the difference in hydrophilicity and hydrophobicity. Zeolite molecular sieve membrane is a kind of inorganic membrane material with regular micropore structure. Its pore diameter is below 1nm. With the help of the adsorption selectivity of pores or molecular sieve characteristics, zeolite molecular sieve membrane can realize the separation between different molecules. In the field of dehydration, purification and refining of organics, NaA molecular...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D63/02B01D61/36
Inventor 顾学红王学瑞蒋冀王健豪王航华徐南平
Owner NANJING UNIV OF TECH
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