TWM517011U - Tubular membrane - Google Patents

Description

Tubular membrane

This creation relates to a tubular membrane, particularly to a tubular membrane having an inner diameter of 5 to 12 mm.

The polymer separation membrane is generally suitable for the treatment and recovery of liquids, and is particularly suitable for the treatment of domestic sewage and industrial wastewater, such as: oil-water separation, treatment and recovery of dyeing and finishing wastewater, treatment and recovery of electroplating water, treatment and recycling of electrophoretic paint. In addition, the polymer separation membrane is also suitable for purification or concentration of liquid products, such as: juice concentration, separation of dairy products, separation and purification of enzymes, and the like.

In terms of the form of the polymer separation membrane, the conventional separation membrane can be classified into a tubular membrane, a flat membrane, a spiral membrane, a capillary membrane, and a hollow fiber membrane. Among these polymer separation membranes, the spiral membrane has the advantage that the unit specific surface area is large (the surface area of the membrane which can be contacted by unit water, generally in units of m ² /m ³ ), and the efficiency is good, but the disadvantage is that the spiral volume The membrane group is easy to block and cannot be cleaned. Therefore, it has higher requirements for influent water and can only treat sewage with low pollution degree. The hollow fiber membrane has the highest unit specific surface area and has better efficiency, but the pore diameter of the hollow fiber. <0.5mm, also has the problem of easy clogging, and is not easy to clean, and has high requirements for water inflow; the flat membrane has a small specific surface area and a large space, although the membrane surface can be cleaned, but overall The problem of low filtration efficiency.

As described above, in view of the shortcomings of the conventional polymer separation membrane, it is necessary to develop a new type of tubular membrane to meet the needs of domestic sewage and industrial wastewater treatment.

To achieve the above and other objects, the present invention provides a tubular film comprising: an outer support layer having a tubular shape; an intermediate reinforcement layer located inside the outer support layer; and an inner layer The filter layer is located inside the intermediate strengthening layer, wherein the tubular film has an inner diameter of 5 to 12 mm.

The tubular film described above, wherein the outer support layer may be composed of PET or PP nonwoven fabric.

The tubular film described above, wherein the intermediate reinforcing layer may be composed of PET or PP non-woven fabric.

In the above tubular film, the inner filter layer may be composed of a polymer coating or a polymer composite coating.

To achieve the above and other objects, the present invention provides a tubular membrane set comprising: a plurality of the above tubular membranes.

The tubular film set described above, wherein the plurality of tubular film systems are disposed in parallel with each other.

The tubular film set described above, wherein the plurality of tubular film systems are disposed in series with each other.

The tubular membrane and tubular membrane module provided by the creation can improve the filtration efficiency, effectively control the concentration polarization and scale problem, and have a long life.

10‧‧‧ tubular membrane

11‧‧‧Outer support layer

12‧‧‧Intermediate strengthening layer

13‧‧‧ Inner filter layer

Fig. 1 is a schematic view showing the tubular film of the first embodiment.

Fig. 2 is a cross-sectional view showing the tubular film of the first embodiment.

In order to fully understand the purpose, features and effects of the present work, a detailed description of the present work will be made by the following specific embodiments and with the accompanying drawings. The thickness or size of the layers in the drawings are exaggerated, omitted or summarized for ease of description and clarity. At the same time, the size of each component does not fully reflect its true size.

Example 1: Tube membrane

The structure of the tubular film of the first embodiment is shown in FIG. 1 and FIG. 2, wherein FIG. 1 is a schematic view of the tubular film; and FIG. 2 is a cross-sectional view of the tubular film. As shown in the figure, the tubular film 10 of the present invention comprises: an outer support layer 11; an intermediate reinforcing layer 12; and an inner filter layer 13 and the like, wherein the inner diameter of the tubular film is 5~ 12mm. In the tubular film 10 of the present invention, the outer support layer 11 has a tubular shape, and the material constituting the outer support layer 11 may be selected from PET or PP non-woven fabric, but is not limited thereto, and any other permeability and certain use may be used. Strength material. The intermediate reinforcing layer 12 is located inside the outer supporting layer 11, and the material constituting the intermediate reinforcing layer 12 may be PET or PP non-woven fabric, but is not limited thereto, and any other material having permeability and strength may be used. The inner filter layer 13 is located inside the intermediate reinforcing layer 12, and the material constituting the inner layer 13 may be a polymer coating or a polymer composite coating, but is not limited thereto, and any other may be used. Selective permeability material.

When the operation is performed, the tubular film 10 of the present invention can be fed in a tubular feed or a shell feed. The tubular feed system injects the feed liquid from one end of the tubular membrane 10, and when the liquid passes through the tubular membrane 10, part of the liquid permeates through the inner filtration layer 13 to the outside of the tubular membrane 10 to form Permeate the liquid. At the same time, after permeation, part of the liquid flows to the other end of the tubular membrane 10 to form a concentrated liquid. In contrast, the shell-type feed system encloses the tubular membrane 10 in a casing, the two ends of the tubular membrane 10 are open outside the casing, and the feed liquid is injected into the casing to make the liquid From the outside of the tubular membrane 10, through the inside The layer filtration layer 13 is infiltrated into the tubular membrane 10, and the permeated liquid is collected from both ends of the tubular membrane 10. At the same time, after permeation, the liquid other than the tubular membrane 10 is collected as a concentrated liquid.

Subsequent treatment or discharge of osmotic liquids and concentrated liquids can be carried out according to different liquid handling procedures. For example, when the dyeing and finishing wastewater treatment and recovery procedures are carried out, the dyeing and finishing substances in the osmotic liquid have been greatly reduced, which can be further processed or directly discharged; the concentrated liquid contains a relatively high concentration of dyeing and finishing substances, which can be further Carry out subsequent processing or direct recycling. When the purification or concentration procedure of the liquid product is carried out, the concentrated liquid contains a higher concentration of the target substance with respect to the feed liquid and can be further utilized.

One of the characteristics of the tubular film of the present invention is that it has an inner diameter of 5 to 12 mm compared to the conventional polymer separation membrane. The tubular film of the present invention achieves at least the following effects by controlling the inner diameter within this range:

1. The unit specific surface area of the tubular film can be increased, thereby effectively improving the filtration efficiency.

2. The tubular membrane can be easily blocked, so that the tubular membrane can be applied to filter the feed liquid with high viscosity and high solid content, and can effectively control the concentration polarization and scaling problem.

3. Depending on the type of feed liquid, the tubular membrane can be periodically cleaned systematically, and has a longer life than other conventional polymer separation membranes.

Example 2: tubular membrane group

The tubular film set of the second embodiment of the present invention comprises: a plurality of tubular films as described in Embodiment 1, wherein the plurality of tubular films are disposed in parallel or in series with each other. In the tubular membrane group of Example 2, in the case of a plurality of tubular membranes in parallel, the liquid can be simultaneously passed through a plurality of tubular membranes, thereby increasing the amount of liquid that can be handled per unit time. On the other hand, in the case of a plurality of tubular membranes in series, the path of the liquid through the tubular membrane can be extended to obtain a better filtration or concentration effect.

The present invention has been disclosed in the above preferred embodiments, and it should be understood by those skilled in the art that the present invention is only intended to depict the present invention and should not be construed as limiting the scope of the present invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of this creation is subject to the definition of the scope of patent application.

10‧‧‧ tubular membrane

11‧‧‧Outer support layer

12‧‧‧Intermediate strengthening layer

13‧‧‧ Inner filter layer

Claims (6)

A tubular film comprising: an outer support layer having a tubular shape; an intermediate reinforcement layer located inside the outer support layer; and an inner filter layer positioned inside the intermediate reinforcement layer The inner diameter of the tubular membrane is 5 to 12 mm. The tubular film of claim 1, wherein the outer support layer is composed of PET or PP nonwoven fabric. The tubular film of claim 1, wherein the intermediate reinforcing layer is composed of PET or PP non-woven fabric. The tubular film according to claim 1, wherein the inner filter layer is composed of a polymer coating or a polymer composite coating. A tubular membrane module comprising: a plurality of tubular membranes according to any one of claims 1 to 4, wherein the plurality of tubular membrane membranes are arranged in parallel with one another. A tubular film set comprising: a plurality of tubular membranes according to any one of claims 1 to 4, wherein the plurality of tubular membranes are arranged in series with each other.