Continuous casting production molding method of hollow fiber membrane module

A molding method and fiber membrane technology, which is applied in the field of continuous casting and molding of hollow fiber membrane modules, can solve problems such as root protection of membrane filaments, increased cost investment, and tediousness, and achieve high economic benefits, market promotion value, and labor saving and time cost, and the effect of simplifying the process flow

Inactive Publication Date: 2019-04-19
TIANJIN MOTIMO MEMBRANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But on the one hand, the adhesion between silicone rubber and epoxy resin is poor. This method not only cannot solve the problem of protecting the root of the membrane filament, but also increases the probability of broken filaments. When polyurethane is used, it is not suitable for the environment temperature and humidity and the content of the membrane filament. The amount of water has very strict requirements. In order to meet the requirements for the use of polyurethane, the drying time of the membrane filaments can only be extended and the temperature and humidity control requirements of the pouring environment can be improved, which signifi

Method used

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  • Continuous casting production molding method of hollow fiber membrane module

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Embodiment 1

[0016] The continuous casting method is produced according to the manufacturing method of the hollow fiber membrane module, but adopts the method of continuous casting from the bottom. The sequence of continuous casting is to pour the soft epoxy resin first, and then pour the hard epoxy resin. The density before curing is 1.05g / cm3 (25°C), and the density of hard epoxy resin before curing is 1.15g / cm3 (25°C).

Embodiment 2

[0018] The continuous casting method is produced in accordance with the manufacturing method of the hollow fiber membrane module. The hollow fiber membrane with a water content of less than 10% is used. According to the method of continuous casting from the bottom, the sequence of continuous casting is to cast polyurethane first, and then cast hard epoxy resin. .

[0019] The control group 1 adopts the secondary casting method and is produced according to the manufacturing method of the hollow fiber membrane module, using the method of casting hard epoxy resin at the bottom and casting polyurethane at the side port.

[0020] The control group 2 adopts the secondary casting method, and is produced according to the manufacturing method of the hollow fiber membrane module.

[0021] The above methods are summarized in the following table based on factors such as the casting environment, membrane moisture content and cost consumption in the preparation process of the hollow fiber m...

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Abstract

The invention discloses a continuous casting production molding method of a hollow fiber membrane module. The method comprises the following steps: filling the membrane shell of a hollow fiber membrane module with a bundle of membrane silks to be cast, and sealing the ends, to be cast, of the membrane silks with a sealant; and mounting a casting tool, performing continuous casting through successively casting flexible epoxy resin or polyurethane and then casting hard epoxy resin by a process for casting the flexible epoxy resin and the hard epoxy resin from the bottom of the hollow fiber membrane module, and curing the resins to form a sealed structure with a flexible top and a hard bottom on the dependence of the inherent density difference between the two resins. The flexible epoxy resinis adopted to substitute the polyurethane to carry out root protection, so the requirement for the dryness of the membrane silks is significantly reduced, and the requirements for the temperature andthe humidity of the casting environment are reduced, thereby the cost investment of casting hardware is reduced, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of membrane modules, and in particular relates to a continuous casting and molding method for a hollow fiber membrane module. Background technique [0002] At present, hollow fiber membrane is an important realization form of membrane separation technology. It is widely used in energy, light industry, food, bioengineering and environmental protection and other fields, and has a significant role in promoting social progress, economic development and environmental protection. [0003] The production process of the existing hollow fiber membrane module is generally formed by first grouping the hollow fiber membrane membrane filaments into bundles and packing them into the membrane shell, and then sealing both ends of the hollow fiber membrane membrane with resin. Considering that the membrane module needs to operate under pressure, most of the resins used are epoxy resins with high hardness after curing. Durin...

Claims

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Application Information

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IPC IPC(8): B01D63/02
CPCB01D63/021
Inventor 梁恩宾胡晓宇王春浩
Owner TIANJIN MOTIMO MEMBRANE TECH
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