Composite filler and method for manufacturing composite filler

Abstract

This invention relates to a composite packing material and a method for manufacturing the composite packing material. The composite packing material includes a packing skeleton with several rotating channels. An epoxy resin film is coated on the packing skeleton, and an activated carbon film is adhered to the epoxy resin film. The packing skeleton includes a support ring with several outer blades connected to its outer side and several inner blades connected to its inner side. Rotating channels are formed between adjacent outer blades and between adjacent inner blades. The arrangement of the packing skeleton and rotating channels increases the contact area between gaseous pollutants and liquids at the composite packing material. The activated carbon film makes the surface of the composite packing material non-smooth, thereby improving its adsorption performance.

Description

Technical Field

[0001] This invention belongs to the field of environmental purification technology, specifically relating to a composite filler and a method for manufacturing the composite filler. Background Technology

[0002] In some mature packing engineering applications, most packing materials are either granular, such as volcanic rock, bark, or ceramsite, where microorganisms can only attach to their surface but cannot utilize the space occupied by the packing material itself, resulting in low space utilization; or hollow, such as multifaceted hollow spheres, MBBR spheres, or Pall rings. These packing materials are all plastic products, and their smooth surfaces have poor adsorption performance for deodorizing bacteria and gases.

[0003] Therefore, there is a need for a high-efficiency composite packing material with a large gas-liquid contact surface and a certain roughness adsorption surface. Summary of the Invention

[0004] To address all or part of the aforementioned problems, the present invention aims to provide a composite packing material and a method for manufacturing the composite packing material. By configuring the packing skeleton and rotating flow channel, the contact area between gaseous pollutants and liquid at the composite packing material can be increased. By configuring the activated carbon membrane, the surface of the composite packing material becomes non-smooth, thereby improving the adsorption performance of the composite packing material.

[0005] According to one aspect of the present invention, a composite filler is provided, comprising a filler skeleton having a plurality of rotating channels, wherein an epoxy resin film is coated on the filler skeleton, and an activated carbon film is adhered to the epoxy resin film.

[0006] Furthermore, the packing skeleton includes a support ring, with a plurality of outer blades connected to the outer side of the support ring and a plurality of inner blades connected to the inner side of the support ring, and the rotating flow channel is formed between two adjacent outer blades and between two adjacent inner blades.

[0007] Furthermore, the support ring is provided with a connecting post, the axial direction of the support ring coincides with the axial direction of the connecting post, and several inner blades are connected to the connecting post.

[0008] Furthermore, the inner blades rotate in opposite directions to the outer blades, each inner blade has a planar cross-section on the first plane, and each outer blade has a fan-shaped annular cross-section on the first plane. The first plane is any one of the two end faces of the support ring that is parallel to the two end faces of the support ring.

[0009] Furthermore, the epoxy resin film is a bisphenol A type epoxy resin film.

[0010] Furthermore, the epoxy resin film has a thickness of 0.1-0.2 mm, and the activated carbon particles have a size of 80-100 mesh.

[0011] Furthermore, the filler skeleton is made of polypropylene plastic.

[0012] According to another aspect of the present invention, a method for manufacturing a composite filler is provided, wherein the composite filler is as described in any of the preceding claims, and the method comprises the following steps:

[0013] The filler skeleton is obtained by extrusion molding of polypropylene plastic;

[0014] The packing skeleton is placed on a turntable, and epoxy resin solution is sprayed onto the packing skeleton by a circulating pump so that the epoxy resin solution can coat the packing skeleton to form an epoxy resin film, thus obtaining a semi-finished product.

[0015] The semi-finished product is placed on a conveyor belt containing activated carbon particles, so that the semi-finished product adheres to the activated carbon particles and forms an activated carbon film as it moves forward with the conveyor belt, thus obtaining the composite filler finished product.

[0016] The composite filler product and excess activated carbon are separated, and the composite filler product is allowed to stand to solidify the epoxy resin film, thus obtaining the composite filler.

[0017] Furthermore, after placing the filler skeleton on a turntable and spraying epoxy resin solution onto the filler skeleton using a circulating pump to coat the filler skeleton with epoxy resin solution to form a semi-finished product, the method further includes:

[0018] Start the turntable to rotate in order to fling out excess epoxy resin solution adhering to the filler skeleton.

[0019] Furthermore, the conveyor belt is a flexible conveyor belt, and multiple triangular rollers are arranged below the conveyor belt;

[0020] The end of the conveyor belt is equipped with a separation screen, and below the separation screen is an activated carbon particle recovery container.

[0021] As can be seen from the above technical solution, the composite filler and its manufacturing method provided by the present invention have the following beneficial effects:

[0022] The contact area between gaseous pollutants and liquids at the composite packing can be increased by setting up the packing skeleton and rotating flow channel.

[0023] The surface of the composite filler is made non-smooth by setting an activated carbon membrane, which can improve the adsorption performance of the composite filler.

[0024] Composite packings require a wide range of materials and are inexpensive; their manufacturing methods are simple, making them easy to mass-produce and suitable for large-scale engineering applications. Attached Figure Description

[0025] Figure 1 This is a structural diagram of a composite packing according to an embodiment of the present invention;

[0026] Figure 2 This is an exploded view of a composite filler according to an embodiment of the present invention;

[0027] Figure 3 This is a front view of a composite packing material according to an embodiment of the present invention;

[0028] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0029] Figure 5 This is a schematic diagram of the spraying device according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the activated carbon adhesion device according to an embodiment of the present invention;

[0031] The attached diagram is labeled as follows: Inner blade 1, Outer blade 2, Support ring 3, Connecting column 4;

[0032] Epoxy resin solution tank 10, turntable 11, epoxy resin solution 12, circulation pump 13;

[0033] 20. Conveyor belt 21. Triangular roller 21. Separating screen 22. Activated carbon granule recovery container 23. Detailed Implementation

[0034] To better understand the purpose, structure, and function of this invention, the following detailed description of a composite filler and its manufacturing method, in conjunction with the accompanying drawings, is provided.

[0035] Composite packing is used in various treatment towers. Specifically, the composite packing is located in the middle of the treatment tower, the spray device is located above the composite packing inside the treatment tower, and the gas inlet is located below the composite packing inside the treatment tower. The gas entering the treatment tower moves upward along the gaps in the composite packing and comes into contact with the spray liquid of the spray device, thereby achieving the purpose of treating the gas through the spray liquid.

[0036] like Figure 1-4The diagram illustrates a composite packing material according to an embodiment of the present invention, comprising a packing skeleton having a plurality of rotating channels. The rotating channels increase the gas flow path, allowing the gas to be treated to fully contact the sprayed liquid. An epoxy resin film is coated on the packing skeleton, serving as a bonding agent for activated carbon particles. This epoxy resin film possesses advantages such as corrosion and heat resistance, and high strength after curing, further enhancing the strength and extending the service life of the composite packing material. An activated carbon film is bonded to the epoxy resin film, formed by bonding activated carbon particles to the epoxy resin film. The activated carbon particles are attached to the outer side of the epoxy resin film, serving as a carrier for microbial metabolism and gas-liquid mass transfer.

[0037] In one specific embodiment, the packing skeleton includes a support ring 3. A plurality of outer blades 2 are connected to the outer side of the support ring 3, and a plurality of inner blades 1 are connected to the inner side of the support ring 3. Rotating flow channels are formed between adjacent outer blades 2 and between adjacent inner blades 1. In this embodiment, the arrangement of the support ring 3, inner blades 1, and outer blades 2 ensures that rotating flow channels are formed both inside and outside the support ring 3, allowing sprayed liquid to flow through both the inside and outside of the support ring 3.

[0038] In one specific embodiment, a connecting post 4 is provided inside the support ring 3, and the axial direction of the support ring 3 coincides with the axial direction of the connecting post 4. Several inner blades 1 are all connected to the connecting post 4. In this embodiment, by connecting the inner blades 1 between the support ring 3 and the connecting post 4, the strength of the packing skeleton can be improved, and deformation of the packing skeleton can be prevented.

[0039] In one specific embodiment, the inner blade 1 and the outer blade 2 rotate in opposite directions. The cross-section of each inner blade 1 on the first plane is a plane, and the cross-section of each outer blade 2 on the first plane is a fan-shaped annular surface. The first plane is any plane that is parallel to the two end faces of the support ring 3 and located between the two end faces of the support ring 3.

[0040] In this embodiment, the first plane is a plane parallel to the two end faces of the support ring 3 and located between the two end faces, such as... Figure 3 As shown, the two end faces of the support ring 3 are... Figure 3 The left and right end faces, plane AA is the first plane in this embodiment, as shown in the figure. Figure 4 The support ring 3 has a circular annular cross-section on the plane, the inner blade 1 has a planar cross-section on the plane, and the outer blade 2 has a fan-shaped annular cross-section on the plane.

[0041] Secondly, the inner blade 1 and the outer blade 2 rotate in opposite directions. This arrangement improves the compressive strength of the packing skeleton and prevents deformation. Specifically, for example, the inner blade 1 rotates at an angle of 30 degrees, and the outer blade 2 rotates at an angle of 60 degrees.

[0042] In one specific embodiment, the epoxy resin film is a bisphenol A type epoxy resin film. Bisphenol A type epoxy resin has advantages such as low and wide curing temperature range and short curing time, making it an excellent material for bonding activated carbon particles. Therefore, in this embodiment, the epoxy resin film is a bisphenol A type epoxy resin film, which facilitates the bonding of activated carbon particles. Simultaneously, epoxy resin is corrosion-resistant and heat-resistant, and has high strength after curing, which can further improve the strength of the composite filler.

[0043] In one specific embodiment, the epoxy resin film has a thickness of 0.1-0.2 mm, and the activated carbon particles have a size of 80-100 mesh. The thickness design of the epoxy resin film satisfies the thickness requirements for bonding the activated carbon particles; if the epoxy resin film is too thin, it cannot meet the bonding requirements. On the other hand, it reduces costs; if the epoxy resin film is too thick, it increases the cost of the composite filler. Furthermore, the 80-100 mesh activated carbon particles serve as an excellent carrier for microbial metabolism.

[0044] In one specific embodiment, the filler skeleton is made of polypropylene plastic. In this embodiment, the filler skeleton is made of polypropylene plastic, which allows for easy one-piece extrusion molding using a plastic extruder and subsequent cutting to obtain the desired filler skeleton. The plastic extruder exit die needs to be customized according to the specific shape and dimensions of the filler skeleton.

[0045] According to another aspect of the present invention, a method for manufacturing a composite filler is provided, wherein the composite filler is as described in any of the above embodiments, and the method includes the following steps:

[0046] Step 01: The filler skeleton is obtained by extrusion molding of polypropylene plastic; in this step, the polypropylene plastic is extruded in a plastic extruder and cut to obtain the filler skeleton of the required length. The outlet mold of the plastic extruder needs to be customized according to the specific shape and size of the filler skeleton.

[0047] Step 02: Place the filler skeleton on a turntable and spray epoxy resin solution onto the filler skeleton using a circulating pump so that the epoxy resin solution can coat the filler skeleton to form an epoxy resin film, thus obtaining a semi-finished product.

[0048] The spraying device used in step 02 is as follows: Figure 5As shown, the system includes: an epoxy resin solution tank 10 containing an epoxy resin solution 12; a turntable 11 positioned above the epoxy resin solution tank 10; and a circulation pump 13 pumping the epoxy resin solution 12 from the epoxy resin solution tank 10 onto the filler skeleton on the turntable 11. The circulation pump 13 also pumps the epoxy resin solution 12 from the epoxy resin solution tank 10 onto the filler skeleton on the turntable 11, thereby coating the filler skeleton with a thin epoxy resin film.

[0049] To facilitate the placement of the filler skeleton onto the turntable 11 inside the epoxy resin solution tank 10, an inlet is provided at the top of the epoxy resin solution tank 10. To remove the semi-finished product, an outlet is also provided on the epoxy resin solution tank 10.

[0050] In step 02, the filler skeleton is placed on the turntable 11, and epoxy resin solution 12 is sprayed onto the filler skeleton by the circulating pump 13 so that the epoxy resin solution 12 can be coated on the filler skeleton to form a semi-finished product. The method for manufacturing the composite filler further includes:

[0051] The turntable 11 is started to rotate so as to throw off the excess epoxy resin solution 12 adhering to the filler skeleton.

[0052] The turntable 11 is connected to a drive device, which drives the turntable 11 to rotate. The rotation of the turntable 11 allows excess epoxy resin solution adhering to the filler skeleton to be ejected by centrifugal force. After rotating for a period of time, the turntable 11 stops rotating, resulting in a semi-finished product with an epoxy resin film.

[0053] Step 03: Place the semi-finished product on a conveyor belt containing activated carbon particles, so that the semi-finished product adheres to the activated carbon particles and forms an activated carbon film as it moves forward with the conveyor belt, thus obtaining the composite filler finished product.

[0054] After obtaining the semi-finished product with a uniform epoxy resin film, it enters the activated carbon adhesion process. In the activated carbon adhesion process, the filler skeleton of the semi-finished product is directly diverted into the conveyor belt containing activated carbon particles. As the semi-finished filler moves forward with the conveyor belt, it comes into contact with the activated carbon particles on the conveyor belt, thereby causing the activated carbon to adhere to the epoxy resin film, forming a uniform activated carbon film, and obtaining the composite filler finished product.

[0055] In addition, to ensure that the filler skeleton of the semi-finished product can fully contact the activated carbon particles, the activated carbon attachment device in this embodiment is as follows: Figure 6As shown, the system includes a conveyor belt 20, which is a flexible conveyor belt. Multiple triangular rollers 21 are arranged below the conveyor belt 20. The multiple triangular rollers 21 rotate continuously along the movement direction of the conveyor belt 20, thereby realizing continuous shaking of the flexible conveyor belt. Through the continuous shaking of the triangular rollers 21, the activated carbon particles and the filler skeleton of the semi-finished product can be fully mixed, so that as many activated carbon particles as possible are adhered to the epoxy resin film to form a uniform activated carbon film, thus obtaining the composite filler product.

[0056] Step 04: Separate the finished composite filler and excess activated carbon, and let the finished composite filler stand to solidify the epoxy resin film to obtain the composite filler.

[0057] The composite filler product obtained in step 03 is mixed with activated carbon particles, so it is necessary to separate the two. After separation, the composite filler product is left to stand for a period of time until the epoxy resin film is cured to obtain the desired composite filler.

[0058] Specifically, such as Figure 6 As shown, the separation of the composite filler product and the activated carbon particles is achieved through a separation screen 22, which is located at the end of the conveyor belt. Below the separation screen 22 is an activated carbon particle recovery container 23. When the activated carbon particles and the composite filler product are transported together to the end of the conveyor belt, they enter the separation screen 22 together. The separation screen 22 causes the composite filler product to remain on the screen, while the activated carbon particles fall into the activated carbon particle recovery container 23 below the screen, thereby achieving the separation of the activated carbon particles and the composite filler product. The composite filler product on the separation screen can then be collected.

[0059] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for preparing a composite filler, characterized in that, The composite packing includes a packing skeleton having several rotating channels. An epoxy resin film is coated on the packing skeleton, and an activated carbon film is adhered to the epoxy resin film. The packing skeleton includes a support ring, with several outer blades connected to the outer side of the support ring and several inner blades connected to the inner side of the support ring. Rotating channels are formed between adjacent outer blades and between adjacent inner blades. The inner blades rotate in opposite directions to the outer blades. Each inner blade has a planar cross-section on a first plane, and each outer blade has a fan-shaped annular cross-section on the first plane. The first plane is parallel to the two end faces of the support ring and is located on any plane between the two end faces of the support ring. The method includes the following steps: The filler skeleton is obtained by extrusion molding of polypropylene plastic; The packing skeleton is placed on a turntable, and epoxy resin solution is sprayed onto the packing skeleton by a circulating pump so that the epoxy resin solution can coat the packing skeleton to form an epoxy resin film, thus obtaining a semi-finished product. The semi-finished product is placed on a conveyor belt containing activated carbon particles, so that the semi-finished product adheres to the activated carbon particles and forms an activated carbon film as it moves forward with the conveyor belt, thus obtaining the composite filler finished product. The composite filler product and excess activated carbon are separated, and the composite filler product is allowed to stand to cure the epoxy resin film, thereby obtaining the composite filler. The conveyor belt is a flexible conveyor belt, and multiple triangular rollers are arranged below the conveyor belt; a separation screen is provided at the end of the conveyor belt, and an activated carbon particle recovery container is arranged below the separation screen.

2. The method for preparing the composite filler according to claim 1, characterized in that, The support ring is provided with a connecting post, and the axial direction of the support ring coincides with the axial direction of the connecting post. Several inner blades are connected to the connecting post.

3. The method for preparing the composite filler according to claim 1, characterized in that, The epoxy resin film is a bisphenol A type epoxy resin film.

4. The method for preparing the composite filler according to claim 1, characterized in that, The epoxy resin film has a thickness of 0.1-0.2 mm, and the activated carbon particles have a size of 80-100 mesh.

5. The method for preparing the composite filler according to claim 1, characterized in that, After placing the filler skeleton on a turntable and spraying epoxy resin solution onto the filler skeleton using a circulating pump to coat the filler skeleton with epoxy resin solution to form an epoxy resin film and obtain a semi-finished product, the method further includes: Start the turntable to rotate in order to fling out excess epoxy resin solution adhering to the filler skeleton.

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