CN217614025U - A multistage separation filter equipment for oxidation graphite alkene deacidification - Google Patents
A multistage separation filter equipment for oxidation graphite alkene deacidification Download PDFInfo
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- CN217614025U CN217614025U CN202221625339.7U CN202221625339U CN217614025U CN 217614025 U CN217614025 U CN 217614025U CN 202221625339 U CN202221625339 U CN 202221625339U CN 217614025 U CN217614025 U CN 217614025U
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Abstract
The application provides a multistage separation filter equipment for graphite oxide deacidification, including storage tank and discharge tank, be provided with doublestage filter equipment between storage tank and the discharge tank. The application provides a multistage separation filter equipment for oxidation graphite alkene deacidification has adopted the nanofiltration membrane as main washing device to can recycle most high concentration sulphuric acid and be used for producing recycle at the washing initial stage, and this device only needs deionized water to wash, does not introduce other impurity, and whole washing process belongs to serialization operation, easy operation, high efficiency. The device is in a fully closed state, no acid gas is discharged, and only deionized water is needed to clean equipment after production is finished. During back washing, the damage of the back washing liquid to the first-stage nanofiltration membrane and the second-stage nanofiltration membrane is greatly reduced, and the service life of the first-stage nanofiltration membrane and the service life of the second-stage nanofiltration membrane are prolonged.
Description
Technical Field
The application belongs to the technical field of filtration equipment, and more specifically relates to a multistage separation filter equipment for deacidification of graphene oxide.
Background
The main raw material for preparing the traditional graphene oxide is sulfuric acid, hydrochloric acid is used as a solvent for settlement separation in subsequent washing, the supernatant is separated after the materials are settled, then deionized water is used for washing, and finally a centrifugal machine is used for separating the supernatant and the graphite oxide materials. Impurities such as halogen and the like are inevitably introduced into the traditional preparation equipment, the process for removing acid is complex and tedious, and the production efficiency is not high.
Disclosure of Invention
An object of the embodiment of this application is to provide a multistage separation filter equipment for oxidation graphite alkene deacidification to solve the production efficiency that exists among the prior art low and finished product contains technical problem such as impurity.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: the utility model provides a multistage separation filter equipment for oxidation graphite alkene deacidification, includes storage tank and ejection of compact jar, its characterized in that: a two-stage filtering device is arranged between the storage tank and the discharge tank, the two-stage filtering device comprises a first-stage filtering device and a second-stage filtering device, and the storage tank is sequentially communicated with the first-stage filtering device, the second-stage filtering device and the discharge tank through a filtering pipeline;
the primary filtering device comprises two filter cartridges, a primary nanofiltration membrane is arranged in each filter cartridge, a plurality of primary material channels are arranged on the primary nanofiltration membranes, and a plurality of primary holes are formed in the inner walls of the primary material channels;
the second grade filter equipment includes two cartridge filters, all is provided with the second grade and receives the filter membrane in every cartridge filter, is provided with a plurality of second grade material passageway on the second grade receives the filter membrane, is provided with a plurality of second grade holes on the inner wall of second grade material passageway.
Optionally, the primary pores have a diameter of 100 nanometers.
Optionally, the secondary pores have a diameter of 50 nanometers.
Optionally, the primary filtering device is also communicated with a concentrated acid recovery device through an acid removal pipeline, and the secondary filtering device is also communicated with a waste liquid treatment device through a waste liquid recovery pipeline;
the primary filtering device and the secondary filtering device are communicated with the storage tank through a circulating branch pipeline and a circulating main pipeline;
the storage tank is connected with the deionized water machine through a deionized water pipeline, and the discharge tank is connected with the plate-and-frame filter press through a discharge pipeline.
Optionally, a first valve is arranged between the primary filtering device and the secondary filtering device, and a second valve is arranged between the secondary filtering device and the discharge tank; a waste liquid branch pipeline is arranged between the deacidification pipeline and the waste liquid recovery pipeline, a first three-way control valve is arranged at the joint of the deacidification pipeline and the waste liquid branch pipeline, and a second three-way control valve is arranged at the joint of the waste liquid recovery pipeline and the waste liquid branch pipeline; and a third three-way control valve is arranged at the joint of the circulating branch pipeline connected with the primary filtering device and the circulating main pipeline.
Optionally, a backwash water source device is connected to the main circulation pipe, and a buffer member is arranged at the top in the filter cartridge.
Optionally, the cushioning component is an integrally formed spiral sheet.
Optionally, the buffering component comprises an inner cone-shaped deflector and an outer cone-shaped deflector, and the top and the bottom of the inner cone-shaped deflector are connected with the outer cone-shaped deflector through an upper connecting frame and a lower connecting frame respectively.
The application provides a multistage separation filter equipment for oxidation graphite alkene deacidification's beneficial effect lies in: compared with the prior art, this application is used for oxidation graphite alkene deacidification's multistage separation filter equipment has adopted the filter membrane as main washing device to can recycle most high concentration sulphuric acid be used for producing recycle at the washing initial stage, and this device only needs the deionized water to wash, does not introduce other impurity, and whole washing process belongs to serialization operation, easy operation, high efficiency. The device is in a fully closed state, no acid gas is discharged, and only deionized water is needed to clean equipment after production is finished. During back washing, the damage of the back washing liquid to the first-stage nanofiltration membrane and the second-stage nanofiltration membrane is greatly reduced, and the service life of the first-stage nanofiltration membrane and the service life of the second-stage nanofiltration membrane are prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a multistage separation and filtration apparatus for removing acid from graphene oxide according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a dual stage filtration apparatus according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a filter cartridge in an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a primary nanofiltration membrane in an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a secondary nanofiltration membrane in an embodiment of the present application;
FIG. 6 is a schematic view of a cushioning member according to another embodiment of the present application;
FIG. 7 is a schematic view of a cushioning member according to yet another embodiment of the present application;
FIG. 8 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 7;
fig. 9 is a sectional view taken along line B-B in fig. 7.
Wherein, in the figures, the respective reference numerals:
1-a material storage tank; 2-a two-stage filtration device; 3-discharging the material tank; 4-a deionized water machine; 5-concentrated acid recovery unit; 6-a waste liquid treatment device; 7-plate and frame filter press; 8-a deionized water pipe; 9-a discharge pipeline; 10-a filtration line; 11-a main circulation pipeline; 12-a deacidification pipeline; 13-a waste liquor recovery pipeline; 14-a waste liquid branch pipe; 15-a third three-way control valve; 16-a circulation branch pipe; 17-a first valve; 18-a second valve; 19-a first three-way control valve; 20-a second three-way control valve; 21-a primary filtering device; 22-a secondary filtration device; 23-a first-stage nanofiltration membrane; 24-a first-level material channel; 25-a secondary nanofiltration membrane; 26-a secondary material channel; 211-a filter cartridge; 212-a cushioning component; 213-water gap; 214-a spiral sheet; 215-inner cone type flow deflector; 216-outer cone-shaped guide vanes; 217-upper connecting frame; 218-lower connecting frame.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1 and fig. 2 together, a multi-stage separation and filtration apparatus for removing acid from graphene oxide according to an embodiment of the present disclosure will now be described. A multistage separation filter equipment for graphite oxide deacidification, including storage tank 1 and discharge tank 3, be provided with doublestage filter equipment 2 between storage tank 1 and the discharge tank 3.
The double-stage filtering device 2 comprises a first-stage filtering device 21 and a second-stage filtering device 22, and the storage tank 1 is sequentially communicated with the first-stage filtering device 21, the second-stage filtering device 22 and the discharge tank 3 through a filtering pipeline 10.
The primary filtering device 21 is also communicated with the concentrated acid recovery device 5 through an acid removal pipeline 12, and the secondary filtering device 22 is also communicated with the waste liquid treatment device 6 through a waste liquid recovery pipeline 13. The primary filtering device 21 and the secondary filtering device 22 are both communicated with the storage tank 1 through the circulating branch pipeline 16 and the circulating main pipeline 11. The storage tank 1 is connected with the deionized water machine 4 through a deionized water pipeline 8, and the discharge tank 3 is connected with the plate-and-frame filter press 7 through a discharge pipeline 9.
A first valve 17 is arranged between the primary filtering device 21 and the secondary filtering device 22, and a second valve 18 is arranged between the secondary filtering device 22 and the discharge tank 3; a waste liquid branch pipeline 14 is arranged between the deacidification pipeline 12 and the waste liquid recovery pipeline 13, a first three-way control valve 19 is arranged at the joint of the deacidification pipeline 12 and the waste liquid branch pipeline 14, and a second three-way control valve 20 is arranged at the joint of the waste liquid recovery pipeline 13 and the waste liquid branch pipeline 14; a third three-way control valve 15 is arranged at the joint of the circulation branch pipeline 16 connected with the first-stage filtering device 21 and the circulation main pipeline 11.
Referring to fig. 3 and 4, the primary filtering device 21 includes two filter cartridges 211, a primary nanofiltration membrane 23 is disposed in each filter cartridge 211, a plurality of primary material channels 24 are disposed on the primary nanofiltration membrane 23, and the primary material channels 24 are used for conveying materials. The inner wall of the first-level material channel 24 is provided with a plurality of first-level pores, and the diameter of each first-level pore is 100 nanometers. The first-stage nanofiltration membrane 23 is used for separating sulfuric acid containing materials with higher sulfuric acid concentration, which is pumped out from the storage tank 1, and collecting the separated concentrated sulfuric acid into the concentrated acid recovery device 5 for recycling.
The secondary filtering device 22 includes two filter cartridges, each of which is provided with a secondary nanofiltration membrane 25, and referring to fig. 5, the secondary nanofiltration membrane 25 is provided with a plurality of secondary material channels 26, and the secondary material channels 26 are used for conveying materials. The inner wall of the secondary material channel 26 is provided with a plurality of secondary pores, and the diameter of each secondary pore is 50 nanometers. The secondary nanofiltration membrane 25 is used for separating sulfuric acid containing materials with lower sulfuric acid concentration, and the separated liquid is pumped into the waste liquid treatment device 6.
During operation, add the material that is formed by graphite oxide and sulphuric acid mixture in the storage tank 1, close first valve 17 this moment, adjust first tee bend control valve 19, make the deacidification pipeline 12 between one-level filter equipment 21 and the concentrated acid recovery unit 5 for the open mode, make waste liquid small transfer line 14 for the closed mode, adjust third tee bend control valve 15 simultaneously, make the circulation small transfer line 16 between one-level filter equipment 21 and the storage tank 1, circulation main pipe 11 for the open mode, make the circulation small transfer line 16 between second grade filter equipment 22 and the storage tank 1, circulation main pipe 11 for the closed mode. The material enters the primary filtering device 21 from the material storage tank 1, the sulfuric acid is filtered by the material under the filtration of the primary nanofiltration membrane 23, the sulfuric acid in the material is filtered and discharged to the concentrated acid recovery device 5, and after the material is circulated for many times between the material storage tank 1 and the primary filtering device 21, the high-concentration sulfuric acid in the material is discharged, so that the concentration of the sulfuric acid in the material is greatly reduced. At this time, after washing, deionized water is added to the material, the first valve 17 is opened, the second valve 18 is closed, the first three-way control valve 19 is adjusted to make the deacidification pipeline 12 between the primary filtering device 21 and the concentrated acid recovery device 5 be in a closed state, the waste liquid branch pipeline 14 be in an open state, the second three-way control valve 20 is adjusted to make the waste liquid branch pipeline 14 and the waste liquid recovery pipeline 13 be in an open state, the third three-way control valve 15 is adjusted to make the primary filtering device 21, the storage tank 1 and the circulation main pipeline 11 be in an open state, the circulation branch pipeline 16 be in a closed state, and the circulation branch pipeline 16 and the circulation main pipeline 11 between the secondary filtering device 22 and the storage tank 1 also be in an open state. The material gets into second grade filter equipment 22 by first grade filter equipment 21, is filtered the material that contains the sulphuric acid concentration low by second grade filter equipment 22, and the waste liquid is arranged into in the liquid water disposal plant 6. And (3) repeatedly separating and filtering the materials by the first-stage nanofiltration membrane 23 and the second-stage nanofiltration membrane 25 until the pH value of the material meets the use requirement, finally transferring the materials to the discharge tank 3 by the material circulating motor, then feeding the materials into the plate-and-frame filter press 7, performing filter pressing, and further discharging redundant solvents in the materials to obtain a downstream usable graphene oxide filter cake.
In another embodiment of the present application, referring to fig. 3 and fig. 6, the mixture of graphite oxide and sulfuric acid makes the material flow viscous, after long-term use, there is easily a tailing left in the primary material channel 24 and the secondary material channel 26, so that the primary nanofiltration membrane 23 and the secondary nanofiltration membrane 25 need to be back-washed, the main circulation pipeline 11 is connected with a back-washing water source device, a third valve is arranged on the filtration pipeline 10 between the storage tank 1 and the primary filtration device 21, the third valve and the second valve 18 are closed for back-washing, and in order to avoid damage to the primary nanofiltration membrane 23 and the secondary nanofiltration membrane 25 caused by stamping when the washing liquid falls from the water gap 213, a buffer component 212 is arranged at the top inside the filtration cylinder 211.
Preferably, the cushioning member 212 is an integrally formed spiral piece 214, which is simple in structure and convenient to use.
In another embodiment of the present application, referring to fig. 7-9, the cushioning member 212 includes inner conical baffles 215 and outer conical baffles 216. The top and bottom of the inner cone type guide vane 215 are connected to the outer cone type guide vane 216 through an upper connection bracket 217 and a lower connection bracket 218, respectively. The inner conical flow deflector 215 and the outer conical flow deflector 216 further shunt flushing liquid, and the damage of the flushing liquid to the first-stage nanofiltration membrane 23 and the second-stage nanofiltration membrane 25 is greatly reduced.
The application provides a multistage separation filter equipment for oxidation graphite alkene deacidification has adopted the nanofiltration membrane as main washing device to can recycle most high concentration sulphuric acid and be used for producing recycle at the washing initial stage, and this device only needs the deionized water to wash, does not introduce other impurity, and whole washing process belongs to serialization operation, easy operation, high efficiency. The device is in a fully closed state, no acid gas is discharged, and only deionized water is needed to clean equipment after production is finished. During back washing, the damage of the back washing liquid to the first-stage nanofiltration membrane and the second-stage nanofiltration membrane is greatly reduced, and the service life of the first-stage nanofiltration membrane and the service life of the second-stage nanofiltration membrane are prolonged.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. The utility model provides a multistage separation filter equipment for oxidation graphite alkene deacidification, includes storage tank and ejection of compact jar, its characterized in that: a two-stage filtering device is arranged between the storage tank and the discharge tank, the two-stage filtering device comprises a first-stage filtering device and a second-stage filtering device, and the storage tank is sequentially communicated with the first-stage filtering device, the second-stage filtering device and the discharge tank through a filtering pipeline;
the primary filtering device comprises two filter cartridges, a primary nanofiltration membrane is arranged in each filter cartridge, a plurality of primary material channels are arranged on the primary nanofiltration membranes, and a plurality of primary holes are formed in the inner walls of the primary material channels;
the second grade filter equipment includes two cartridge filters, all is provided with the second grade and receives the filter membrane in every cartridge filter, is provided with a plurality of second grade material passageway on the second grade receives the filter membrane, is provided with a plurality of second grade holes on the inner wall of second grade material passageway.
2. The multi-stage separation filtration device for deacidification of graphene oxide according to claim 1, wherein: the primary pores have a diameter of 100 nm.
3. The multistage separation filtration device for deacidification of graphene oxide according to claim 1 or 2, wherein: the diameter of the secondary pores was 50 nm.
4. The multi-stage separation filtration device for graphene oxide deacidification according to claim 3, wherein: the primary filtering device is also communicated with a concentrated acid recovery device through an acid removal pipeline, and the secondary filtering device is also communicated with a waste liquid treatment device through a waste liquid recovery pipeline;
the primary filtering device and the secondary filtering device are communicated with the material storage tank through a circulating branch pipeline and a circulating main pipeline;
the storage tank is connected with the deionized water machine through a deionized water pipeline, and the discharge tank is connected with the plate-and-frame filter press through a discharge pipeline.
5. The multi-stage separation filtration device for graphene oxide deacidification according to claim 4, wherein: a first valve is arranged between the primary filtering device and the secondary filtering device, and a second valve is arranged between the secondary filtering device and the discharge tank; a waste liquid branch pipeline is arranged between the deacidification pipeline and the waste liquid recovery pipeline, a first three-way control valve is arranged at the joint of the deacidification pipeline and the waste liquid branch pipeline, and a second three-way control valve is arranged at the joint of the waste liquid recovery pipeline and the waste liquid branch pipeline; and a third three-way control valve is arranged at the joint of the circulating branch pipeline connected with the primary filtering device and the circulating main pipeline.
6. The multi-stage separation filtration device for deacidification of graphene oxide according to claim 5, wherein: a backwashing water source device is connected on the circulating main pipeline, and a buffering component is arranged at the top part in the filter cylinder.
7. The multi-stage separation filtration device for deacidification of graphene oxide according to claim 6, wherein: the buffer component is an integrally formed spiral sheet.
8. The multi-stage separation filtration device for deacidification of graphene oxide according to claim 6, wherein: the buffering component comprises an inner cone-shaped guide vane and an outer cone-shaped guide vane, and the top and the bottom of the inner cone-shaped guide vane are respectively connected with the outer cone-shaped guide vane through an upper connecting frame and a lower connecting frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221625339.7U CN217614025U (en) | 2022-06-27 | 2022-06-27 | A multistage separation filter equipment for oxidation graphite alkene deacidification |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221625339.7U CN217614025U (en) | 2022-06-27 | 2022-06-27 | A multistage separation filter equipment for oxidation graphite alkene deacidification |
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| CN217614025U true CN217614025U (en) | 2022-10-21 |
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| CN202221625339.7U Active CN217614025U (en) | 2022-06-27 | 2022-06-27 | A multistage separation filter equipment for oxidation graphite alkene deacidification |
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