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Spiral coil type diffusion dialysis membrane assembly and preparation method thereof

A technology of diffusion dialysis and membrane modules, applied in the field of spiral separation membrane modules and their preparation, can solve the problems of low mass transfer efficiency and heavy equipment, and achieve the advantages of increasing mass transfer coefficient, optimizing performance and improving the driving force of mass transfer. Effect

Active Publication Date: 2012-08-29
HEFEI CHEMJOY POLYMER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a spiral-wound diffusion dialysis membrane module and its preparation method to solve the problems of bulky equipment and low mass transfer efficiency in existing diffusion dialysis devices

Method used

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  • Spiral coil type diffusion dialysis membrane assembly and preparation method thereof
  • Spiral coil type diffusion dialysis membrane assembly and preparation method thereof
  • Spiral coil type diffusion dialysis membrane assembly and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Preparation process of a spiral-wound diffusion dialysis membrane module with an effective membrane area of ​​0.5 square meters

[0025] figure 1 It is a schematic diagram of the overall structure of the spiral-wound diffusion dialysis membrane module of the present invention; figure 2 A schematic diagram of the center pipe and side flow pipe of the spiral-wound diffusion dialysis membrane module is given. Between the two central tubes 1 and 7, an ion exchange membrane 3 and two flow channel spacers 4 and 5 are sandwiched, so that the two flow channel spacers 4 and 5 are respectively arranged on both sides of the ion exchange membrane 3, and the central tube is maintained 1 and 7 as the boundary, the lengths of the ion exchange membranes at both ends are equal, and the ion exchange membrane 3, the flow channel separation net 4, 5 and the central tube 1 and 7 are bonded and fixed; the ion exchange membrane 3 and the flow channel separation net 4 and 5 close...

Embodiment 2

[0037] Example 2: The preparation process of the spiral-wound diffusion dialysis membrane module with an effective membrane area of ​​10 square meters

[0038] The rolling method adopted in this example is the same as that in Example 1, adopting the DF120 type dialysis negative membrane with a size of 14000×800mm, the central tube and the side flow tube are all polyvinyl chloride plastic tubes with a semicircular cross-section, and the inner diameter It is Φ25mm, and the end is bonded with polyvinyl chloride pipe fittings to convert it into a circular cross section. The flow channel partition is made of polyethylene material, and the effective membrane area of ​​the spiral-wound diffusion dialysis membrane module is 10m 2 , The external dimension is 1000×Φ200mm.

[0039] If the spiral-wound diffusion dialysis membrane module produced in this example is connected in series and parallel, it can be more suitable for the production process of industrial waste acid recovery, and it...

Embodiment 3

[0040] Example 3: Recovery of Industrial Titanium White Waste Acid by Spiral Wound Diffusion Dialysis Membrane Module

[0041] Use as attached Figure 7 The waste acid recovery performance testing device of the spiral-wound diffusion dialysis membrane module shown in , uses the spiral-wound diffusion dialysis membrane module 18 in Example 1 to carry out the waste acid recovery process test, simulates industrial titanium dioxide waste acid solution, and prepares H 2 SO 4 / FeSO 4 Feed liquid samples, the concentrations are shown in Table 1:

[0042] Table 1FeSO 4 / H 2 SO 4 Concentration of Feed Liquid Sample

[0043]

[0044] Inject waste acid and tap water of equal volume into waste acid head tank 17 and water head tank 16 respectively, adjust the flow rate of acid and water, maintain the flow ratio of waste acid and tap water to be about 0.9-1.2, keep the liquid level, and after being stabilized, Determination of sulfuric acid and ferrous sulfate concentration in resid...

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Abstract

The invention discloses a spiral coil type diffusion dialysis membrane assembly and a preparation method thereof. The spiral coil type diffusion dialysis membrane assembly is characterized in that an ion exchange membrane is clamped between two central tubes, runner screens on two sides mutually and tightly adhere for surrounding the central tubes to coil together according to same direction and are stuck on the axial edge to be sealed into a cylinder; the tail end of the ion exchange membrane forms two tangential runner openings which are radially symmetrical on the outer edge of the cylinder, and a side flow tube is sticked, sealed and fixed respectively by two openings; then the whole cylinder including the side flow tube is tightly wound and fixed by a plastic membrane to form a membrane core, the membrane core is put into a cylindrical shell, and two tips are cast and fixed by adhesive to form the spiral coil type diffusion dialysis membrane assembly with four inlet and outlet adapters. The equipment is compact, has big packing density, can be vertically assembled to occupy small space, can realize the radial spiral counter flow of diffusion liquid and dialysate flow, has bigturbulence degree, high mass transfer efficiency and large feed liquid treatment capacity on unit membrane area and is easy to integrate with other reaction or separation equipment.

Description

technical field [0001] The invention belongs to the technical field of membrane separation equipment, and in particular relates to an anion exchange membrane or a cation exchange membrane and a channel spacer which are rolled together around a central tube and are used for separating and recovering industrial waste acid or waste lye by using the principle of diffusion dialysis. Spiral separation membrane module for acid or alkali and its preparation method. Background technique [0002] Diffusion dialysis uses the concentration difference as the driving force to achieve the purpose of separation by selective permeation of ions through the membrane. In theory, it does not consume energy. It is divided into positive membrane diffusion dialysis (such as for alkali recovery) and negative membrane diffusion dialysis ( Such as for acid recovery). Among them, the anion membrane diffusion dialysis technology utilizes the different selective permeability of the anion exchange membra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D63/10B01D61/28
Inventor 徐铜文李传润
Owner HEFEI CHEMJOY POLYMER MATERIALS CO LTD
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