Tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry

Abstract

The utility model discloses a tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry. The tubular ceramic membrane filter comprises a motor, a clear liquid tank, a porous ceramic core, a ceramic ultra-membrane, a pore channel, a fixed partition plate, a front return pipe, a rear return pipe, an injection and drainage pipeline and a water pump. The device disclosed by the utility model is reasonable in structural design, waste acid generated by subsequent treatment is reduced by concentrating and purifying graphene oxide slurry, and clear liquid generated by cross-flow filtration can be recycled, so that the cost is saved; the high-concentration acidic graphene oxide slurry can be concentrated, and the problem that the high-concentration acidic graphene oxide slurry cannot be filtered by a plate-and-frame squeezing filter press is solved; the pipeline and the ceramic membrane pipe are cleaned and regenerated, materials are further recycled, the production and operation cost is reduced, meanwhile, the risk that a membrane pipe channel is blocked is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to a tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry, and belongs to the technical field of concentrating and purifying graphene oxide slurry. Background Art

[0002] The existing graphene oxide slurry concentration and purification equipment mainly uses different dynamic filtration methods such as "dead end filtration" and "filter cake filtration". The filtration fluid has a single running direction, and the sediment on the surface of the filter membrane is not easily carried away with the filtration fluid, resulting in pollution accumulation and low filtration efficiency. Therefore, in order to solve the above problems, a tubular ceramic membrane filter for graphene oxide slurry concentration and purification is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry in order to solve the above-mentioned problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical scheme: a tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry, comprising a clear liquid tank and a plurality of porous ceramic cores located in the clear liquid tank, wherein two clear liquid tanks are provided, and the same-direction ends of the two clear liquid tanks are interconnected through a rear reflux pipe, one end of one of the clear liquid tanks is connected to the liquid inlet port of a water pump through a front reflux pipe, a plurality of channels are distributed inside each porous ceramic core, and a ceramic super membrane is provided in each channel, the ceramic super membrane is in a cross-flow filtration state through an operating pressure difference, and the filtration flow surface of the ceramic super membrane is parallel to the porous filtration flow surface of the porous ceramic core.

[0005] Preferably, the water outlet of the water pump is interconnected with a corresponding port of another clear liquid tank.

[0006] Preferably, the water inlet of the water pump is also connected to the liquid inlet pipeline portion on which the injection and discharge pipelines are installed.

[0007] Preferably, the other end of the clear liquid tank is connected to the sewage discharge pipeline portion of the injection and discharge pipeline through a control valve.

[0008] Preferably, the porous ceramic core is a loose porous structure, and the filtration accuracy of the filtration structure formed by the porous ceramic core and the ceramic super membrane is 100 nanometers.

[0009] Preferably, the clear liquid tank is made of PPH.

[0010] The beneficial effects of the utility model are:

[0011] 1. By concentrating and purifying the graphene oxide slurry, the waste acid generated in the subsequent treatment is reduced. At the same time, the clear liquid generated by cross-flow filtration can be recycled to save costs;

[0012] Second, it can concentrate high-concentration acidic graphene oxide slurry, solving the problem that the plate and frame filter press cannot filter high-concentration acidic graphene oxide slurry;

[0013] 3. Cleaning and regenerating pipelines and ceramic membrane tubes can further recycle materials, reduce production and operation costs, reduce the risk of membrane tube channel blockage, and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the clear liquid tank of the utility model;

[0017] Figure 3 This is a schematic diagram of the porous ceramic core connection structure of the utility model.

[0018] In the figure: 1. Motor; 2. Clear liquid tank; 21. Porous ceramic core; 211. Ceramic super membrane; 212. Channel; 22. Fixed partition; 3. Front return pipe; 4. Rear return pipe; 5. Injection and discharge pipeline; 6. Water pump. DETAILED DESCRIPTION

[0019] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] See also Figure 1-3 As shown, a tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry includes a clear liquid tank 2 and a plurality of porous ceramic cores 21 located in the clear liquid tank 2, wherein two clear liquid tanks 2 are provided, and the same-direction ends of the two clear liquid tanks 2 are interconnected through a rear reflux pipe 4, one end of one of the clear liquid tanks 2 is connected to the liquid inlet port of a water pump 6 through a front reflux pipe 3, a plurality of channels 212 are distributed inside each porous ceramic core 21, and a ceramic super membrane 211 is provided in each channel 212, the ceramic super membrane 211 is in a cross-flow filtration state due to the operating pressure difference, and the filtration flow surface of the ceramic super membrane 211 is parallel to the porous filtration flow surface of the porous ceramic core 21.

[0023] The water outlet of the water pump 6 is interconnected with the corresponding port of another clear liquid tank 2; the water inlet of the water pump 6 is also connected to the liquid inlet pipeline part installed with the injection and discharge pipeline 5; the other end of the clear liquid tank 2 is connected to the sewage pipeline part of the injection and discharge pipeline 5 through a control valve; the porous ceramic core 21 is a loose porous structure, and the filtration accuracy of the filtration structure formed by the porous ceramic core 21 and the ceramic super membrane 211 is 100 nanometers; the material of the clear liquid tank 2 is PPH.

[0024] When the utility model is in use, the injection pipeline part of the injection and discharge pipeline 5 sequentially enters the graphene oxide slurry into the porous ceramic core 21 in the two clear liquid tanks 2 through the water pump 6 for filtration, and the two clear liquid tanks 2, the front reflux pipe 3, the rear reflux pipe 4 and the water pump 6 are controlled by the pipe valve of the prior art to form a concentration and purification circulation system, and the filtered high-purity graphene oxide slurry is discharged from one of the clear liquid tanks 2, and the ceramic super membrane 211 is filtered in combination with the screening effect of the loose and porous porous ceramic core 211. Under the action of the operating pressure difference, the purpose of concentrating and purifying the graphene oxide slurry is achieved in a "cross-flow filtration" manner. Due to the use of the cross-flow filtration filtration method, the fluid flows parallel to the filtration surface, and the surface shear force generated takes away the sediment on the membrane surface, prevents the accumulation of the pollution layer, and puts it in dynamic balance, thereby effectively improving the liquid separation process, so that the filtration operation can be carried out continuously for a long time; at the same time, the fluid shear force and inertial lifting force generated by the "cross-flow filtration" can promote the reverse movement of the solute on the membrane surface to the fluid body, thereby improving the filtration efficiency.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0026] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry, characterized in that: The invention comprises a clear liquid tank (2) and a plurality of porous ceramic cores (21) located in the clear liquid tank (2), wherein two clear liquid tanks (2) are provided, and the same-direction ends of the two clear liquid tanks (2) are interconnected via a rear return pipe (4), one end of one of the clear liquid tanks (2) is connected to a liquid inlet port of a water pump (6) via a front return pipe (3), a plurality of channels (212) are distributed inside each porous ceramic core (21), and a ceramic super membrane (211) is provided inside each channel (212), the ceramic super membrane (211) is in a cross-flow filtration state due to an operating pressure difference, and the filtration flow surface of the ceramic super membrane (211) is parallel to the porous filtration flow surface of the porous ceramic core (21).

2. The tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry according to claim 1, characterized in that: The water outlet of the water pump (6) is connected to a corresponding port of another clear liquid tank (2).

3. The tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry according to claim 1, characterized in that: The water inlet of the water pump (6) is also connected to the liquid inlet pipeline portion on which the injection and discharge pipeline (5) is installed.

4. The tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry according to claim 1, characterized in that: The other end of the clear liquid tank (2) is connected to the sewage discharge pipeline portion of the injection and discharge pipeline (5) via a control valve.

5. The tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry according to claim 1, characterized in that: The porous ceramic core (21) is a loose porous structure, and the filtration accuracy of the filtration structure formed by the porous ceramic core (21) and the ceramic super membrane (211) is 100 nanometers.

6. The tubular ceramic membrane filter for concentrating and purifying graphene oxide slurry according to claim 1, characterized in that: The clear liquid tank (2) is made of PPH.

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