Honeycomb three-dimensional ceramic membrane with non-uniform pore channel structure

Abstract

The utility model relates to the technical field of membrane materials, and discloses a honeycomb three-dimensional ceramic membrane with a non-uniform pore channel structure, which comprises a honeycomb three-dimensional ceramic membrane, the honeycomb three-dimensional ceramic membrane is of a columnar structure, honeycomb pore channels with different pore sizes are arranged at two ends of the columnar structure, the honeycomb pore channels comprise large-size pore channels and small-size pore channels, and the large-size pore channels are communicated with the small-size pore channels. The large-size pore channels and the small-size pore channels are alternately arranged at intervals, the two ends of the honeycomb pore channels are blocked in a staggered mode through pore blocking materials, the small-size pore channels of the honeycomb three-dimensional ceramic membrane serve as regeneration channels of regeneration fluid, the local pressure of the regeneration fluid can be improved, and the membrane element can be regenerated more thoroughly under the same regeneration condition; the regeneration energy consumption is reduced; meanwhile, the membrane element obtains a better regeneration effect; the thickness of the local inner wall of the honeycomb three-dimensional ceramic membrane can be properly increased by adopting the design of the non-uniform honeycomb pore channel structure, the mechanical strength of the membrane is favorably improved, and more importantly, a better catalytic effect can be obtained when the catalytic function of the membrane is used.

Description

Technical Field

[0001] This utility model relates to the field of membrane material technology, specifically to a honeycomb three-dimensional ceramic membrane with a non-uniform pore structure. Background Technology

[0002] Membrane separation technology has wide applications in environmental protection, chemical industry, food processing, and other fields. Ceramic membranes are a typical type of inorganic membrane, usually made from inorganic non-metallic materials such as alumina, zirconium oxide, silicon oxide, silicon carbide, silicon nitride, and cordierite, sintered at high temperatures. Honeycomb three-dimensional ceramic membranes are designed with a porous honeycomb structure, significantly increasing the membrane filtration area and resulting in a substantial improvement in the throughput and efficiency per unit membrane element.

[0003] Membrane fouling is a primary issue that needs to be addressed for the large-scale application of membrane separation technology. Traditional honeycomb ceramic membranes, due to their dead-end filtration mechanism, require frequent regeneration of the fouled membrane, resulting in high energy consumption and unsatisfactory regeneration efficiency. Furthermore, while honeycomb ceramic membranes have a large filtration area, their small filtration channels limit their capacity to hold contaminants. As the filtration channel size decreases and the contaminant content in the separated fluid increases, the regeneration frequency needs to be further increased. This significantly impacts the membrane element's lifespan and regeneration efficiency, and the increased regeneration frequency also greatly increases the operating energy consumption of the entire system. Therefore, we propose a honeycomb ceramic membrane with a non-uniform pore structure. Utility Model Content

[0004] The purpose of this invention is to provide a honeycomb three-dimensional ceramic membrane with a non-uniform pore structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a honeycomb three-dimensional ceramic membrane with a non-uniform pore structure, comprising a honeycomb three-dimensional ceramic membrane, wherein the honeycomb three-dimensional ceramic membrane is a columnar structure, and honeycomb pores of different sizes are opened at both ends of the columnar structure. The honeycomb pores include large-sized pores and small-sized pores, and the large-sized pores and small-sized pores are alternately arranged. The two ends of the honeycomb pores are staggered with plugging material.

[0006] Optionally, the length of the honeycomb three-dimensional ceramic film is 150-2000 mm, and the cross-sectional shape is square, rectangular, circular, elliptical or other geometric shapes.

[0007] Optionally, the honeycomb pore shape of the honeycomb three-dimensional ceramic membrane is square, rectangular, triangular, circular, or hexagonal.

[0008] Optionally, the cross-sectional area of ​​the large-sized channel is 1 to 10 times that of the small-sized channel.

[0009] Optionally, two or more types of honeycomb channels of different sizes can be provided on the cross-section of the honeycomb three-dimensional ceramic membrane.

[0010] Compared with the prior art, this utility model provides a honeycomb three-dimensional ceramic membrane with a non-uniform pore structure, which has the following beneficial effects:

[0011] 1. This honeycomb three-dimensional ceramic membrane with a non-uniform pore structure uses the small-sized pores of the honeycomb three-dimensional ceramic membrane as the regeneration channel for the regeneration fluid, which can increase the local pressure of the regeneration fluid. Under the same regeneration conditions, the membrane element is regenerated more thoroughly, reducing regeneration energy consumption and achieving better regeneration effect. The non-uniform honeycomb pore structure design can also appropriately increase the local inner wall thickness of the honeycomb three-dimensional ceramic membrane, which helps to improve the mechanical strength of the membrane. More importantly, it can achieve better catalytic effect when using the catalytic function of the membrane.

[0012] 2. The honeycomb three-dimensional ceramic membrane with a non-uniform pore structure uses the large-sized pores of the honeycomb three-dimensional ceramic membrane as the filtration channel for the fluid to be treated, which increases the filtration area of ​​the membrane and improves the throughput per unit membrane element; it also improves the ability of the filtration channel to hold pollutants, extends the regeneration cycle of the membrane element, and reduces the operating energy consumption of the complete set of equipment. Attached Figure Description

[0013] Figure 1 This is a cross-sectional schematic diagram of a honeycomb three-dimensional ceramic membrane with a non-uniform pore structure according to the present invention;

[0014] Figure 2 This is a cross-sectional schematic diagram of a honeycomb three-dimensional ceramic membrane with a non-uniform pore structure according to the present invention;

[0015] Figure 3 This is a schematic diagram of the honeycomb three-dimensional ceramic membrane with a non-uniform pore structure according to the present invention.

[0016] In the diagram: 1. Honeycomb 3D ceramic membrane; 2. Honeycomb channel; 21. Large-size channel; 22. Small-size channel; 3. Hole plugging material. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-3As shown, this utility model provides a technical solution: a honeycomb three-dimensional ceramic membrane with a non-uniform pore structure, including a honeycomb three-dimensional ceramic membrane 1, the honeycomb three-dimensional ceramic membrane 1 is a columnar structure, and honeycomb pores 2 with different pore sizes are opened at both ends of the columnar structure. The honeycomb pores 2 include large-sized pores 21 and small-sized pores 22, and the large-sized pores 21 and small-sized pores 22 are alternately arranged. The two ends of the honeycomb pores 2 are staggered and plugged with plugging material 3.

[0019] The honeycomb channels 2 can be arranged in a regular, sequential, or irregular, alternating pattern. Particulate catalysts and ionic catalysts can be coated on the walls of the honeycomb channels and within the micropores of the channel walls, thereby forming a membrane catalyst.

[0020] The length of the honeycomb three-dimensional ceramic membrane 1 is 150-2000 mm, and the cross-sectional shape is square, rectangular, circular, elliptical, or other geometric shapes. The honeycomb channel shape of the honeycomb three-dimensional ceramic membrane 1 is square, rectangular, triangular, circular, or hexagonal.

[0021] The cross-sectional area of ​​the large-size channel 21 is 1 to 10 times that of the small-size channel 22. Two or more types of honeycomb channels of different sizes can be set on the cross-section of the honeycomb three-dimensional ceramic membrane.

[0022] A honeycomb ceramic membrane is constructed by creating honeycomb channels of different sizes at both ends. The larger channels serve as filtration channels for the fluid to be treated, while the smaller channels serve as regeneration channels for the regenerated fluid. In practical applications, the fluid to be treated enters from the opening end of the larger channel, is filtered by the membrane, and then flows out from the opening end of the smaller channel. The regenerated fluid flows in the opposite direction to the fluid to be treated.

[0023] As one application of this embodiment:

[0024] The fluid to be treated is introduced through the opening end of the large-size channel 21, filtered by the membrane layer, and then flows out through the opening end of the small-size channel 22, completing the separation of the fluid. When the membrane element needs regeneration, the flow of the fluid to be treated is stopped, and the regeneration fluid enters through the opening end of the small-size channel 22. As it flows through the membrane layer, it carries the pollutants intercepted by the membrane layer and flows out through the opening end of the large-size channel 21, completing the regeneration of the membrane element. Due to the non-uniform channel structure design, the honeycomb three-dimensional ceramic membrane provided by this invention has larger filtration channels and smaller regeneration channels, which has the advantages of larger processing capacity, stronger pollutant holding capacity, lower regeneration energy consumption, and better regeneration effect compared with traditional membrane elements.

[0025] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A honeycomb three-dimensional ceramic membrane with a non-uniform pore structure, characterized in that: The device includes a honeycomb three-dimensional ceramic membrane (1), which is a columnar structure. The two ends of the columnar structure are provided with honeycomb channels (2) of different sizes. The honeycomb channels (2) include large-size channels (21) and small-size channels (22), and the large-size channels (21) and small-size channels (22) are alternately arranged. The two ends of the honeycomb channels (2) are blocked with plugging material (3) in an alternating manner.

2. The honeycomb three-dimensional ceramic membrane with a non-uniform pore structure according to claim 1, characterized in that: The length of the honeycomb three-dimensional ceramic film (1) is 150-2000 mm, and the cross-sectional shape is square, rectangle, circle or ellipse.

3. The honeycomb three-dimensional ceramic membrane with a non-uniform pore structure according to claim 1, characterized in that: The honeycomb pores of the three-dimensional ceramic membrane (1) are square, rectangular, triangular, circular or hexagonal.

4. The honeycomb three-dimensional ceramic membrane with a non-uniform pore structure according to claim 1, characterized in that: The cross-sectional area of ​​the large-sized channel (21) is 1 to 10 times that of the cross-sectional area of ​​the small-sized channel (22).

5. A honeycomb three-dimensional ceramic membrane with a non-uniform pore structure according to claim 1, characterized in that: Two or more types of honeycomb channels of different sizes can be provided on the cross-section of the honeycomb three-dimensional ceramic membrane.

Images