Hollow fiber membrane filter performance testing device

Abstract

The invention claims a hollow fiber membrane filter performance testing device applied to liquid separation and belonging to the technical field of membrane separation process application. It is characterized by comprising a membrane fiber filter element, a columnar membrane filter container, a diaphragm pump, a pressure regulating valve, a positive and negative pressure gauge, a to-be-filtered liquid water distributing slot, a temperature controller and a filtered liquid collecting graduated cylinder. The core part of the device is a membrane fiber filter container composed of a columnar filter container, a membrane fiber filter element, an external thread connector, an internal thread connector, a hollow pipe, a to-be-tested membrane fiber, a capillary connector and a membrane fiber support frame. The membrane fiber filter element is connected with the columnar membrane filter container by the external thread connector and the internal thread connector. The hollow pipe is connected with the to-be-tested membrane fiber by the capillary connector. The membrane fiber support frame is used for supporting the to-be-tested membrane fiber. The invention can be applied to test and valuation of ultrafiltration, microfiltration and hollow fiber membrane flux and can test filter performance of the hollow fiber membrane with different internal / external diameters and internal / external pressure modes in a certain pressure range.

Description

technical field [0001] The invention belongs to the application field of membrane separation process, and relates to a device for testing the filtration performance of a hollow fiber membrane applied to liquid separation. Background technique [0002] Membrane separation (filtration) technology is a new method of separation, purification and concentration. Compared with traditional separation operations (such as evaporation, extraction, precipitation, coagulation and ion exchange resins, etc.), most of the filtration process has no phase change and can be used at room temperature. Therefore, it has the characteristics of low energy consumption, high efficiency, simple process and small investment. [0003] Hollow fiber membrane is the most widely used membrane separation technology. Its advantages mainly include low operating pressure, self-supporting, good pressure resistance, high packing density in the module, high flux per unit volume, and flexible module size. Hollow ...

AI Technical Summary

Problems solved by technology

At present, there is no standard method for evaluating the flux of hollow fiber membranes, and the membrane flux will be affected by many factors such as material, fiber size, operating pressure, ambient temperature, etc. Therefore, the same membrane fiber can be measured under different devices and conditions to obtain results Therefore, it is very important to develop a standardized device that is suitable for the flux test of hollow fiber membranes of different specifications and can ensure stable filtration environmental conditions.

Images