Graphene adsorption device for recycling non-polar organic solvent

Abstract

The utility model provides a graphene adsorption device for recycling a non-polar organic solvent, and belongs to the technical field of organic solvent treatment. The adsorption device comprises an adsorption device body, the adsorption device body comprises a partition plate and a shell, the partition plate is arranged in the shell in a sleeved mode and divides the shell into an adsorption area and a drainage area, and a sieve plate is arranged at the bottom end of the partition plate; a spiral extruder is arranged in the partition plate, graphene sponge is arranged on the spiral extruder, the bottom end of the shell is provided with a water inlet pipeline, an emptying pipeline and a slag discharging pipeline, the water inlet pipeline and the emptying pipeline are communicated with the adsorption area, the slag discharging pipeline is communicated with the water discharging area, and a water outlet pipeline communicated with the water discharging area is arranged on one side wall of the shell. According to the graphene adsorption device for recycling the non-polar organic solvent, the non-polar organic solvent is adsorbed and recycled through the graphene sponge, the recycling efficiency is high, regeneration of the graphene sponge is achieved through the spiral extruder, the graphene sponge is recycled and repeatedly used, and the recycling cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of organic solvent treatment, and in particular to a graphene adsorption device for recovering non-polar organic solvents. Background Art

[0002] Non-polar solvent systems, such as toluene, n-hexane, n-heptane, caprolactam, mesitylene trimethylaniline and other solvents, are widely used in the fields of pharmaceuticals, food, petrochemicals, etc. However, in the synthesis and preparation process of non-polar solvents, there is a problem that the non-polar organic solvent is difficult to separate from the mixed material after mixing. In the prior art, the separation methods of non-polar organic solvents and mixed materials include distillation purification at different temperatures, adjusting pH for drug precipitation, extraction with other organic solvents followed by distillation separation, and membrane separation.

[0003] However, existing separation methods of non-polar organic solvents generally have problems such as high separation cost, large reagent consumption, unclear interface stratification, high processing cost, and large one-time investment costs. Utility Model Content

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a graphene adsorption device for recovering non-polar organic solvents, so as to improve the separation and recovery efficiency of non-polar organic solvents and reduce the recovery cost.

[0005] In order to achieve the above utility model purpose, the present invention adopts the following technical solutions:

[0006] A graphene adsorption device for recovering non-polar organic solvents, comprising an adsorption device body, the adsorption device body comprising a partition and a shell, the partition is sleeved in the shell, the partition divides the shell into an adsorption area and a drainage area, and a sieve plate is arranged at the bottom end of the partition;

[0007] A screw extruder is arranged in the partition, and a graphene sponge is arranged on the screw extruder. A water inlet pipeline and an emptying pipeline connected to the adsorption area, and a slag discharge pipeline connected to the drainage area are arranged at the bottom end of the shell. A water outlet pipeline connected to the drainage area is arranged on one side wall of the shell.

[0008] In an exemplary embodiment of the present disclosure, the screw extruder includes a motor, a main shaft and a screw blade.

[0009] The top of the shell is provided with an upper cover plate, the motor is provided at the top of the upper cover plate, the main shaft is provided in the partition plate, the top of the main shaft passes through the upper cover plate and is connected to the output end of the motor, the main shaft is rotatably connected to the upper cover plate, the spiral blade is spirally provided on the main shaft, and the graphene sponge is evenly distributed on the surface of the spiral blade

[0010] In an exemplary embodiment of the present disclosure, the screw extruder further comprises an upper sealing plate and a lower sealing plate.

[0011] The upper sealing plate is arranged at the bottom end of the upper cover plate, and the top end of the main shaft passes through the upper sealing plate and is rotatably connected with the upper sealing plate;

[0012] The lower sealing plate is arranged at the top end of the screen plate, and the bottom end of the main shaft is rotatably connected to the lower sealing plate.

[0013] In an exemplary embodiment of the present disclosure, the intervals between the spiral blades decrease from top to bottom.

[0014] In an exemplary embodiment of the present disclosure, the graphene sponge is in the shape of a cube or a sphere.

[0015] In an exemplary embodiment of the present disclosure, the graphene sponge is made of a graphene-based modified three-dimensional multi-skeleton sponge.

[0016] In an exemplary embodiment of the present disclosure, a water inlet control valve is provided on the water inlet pipeline, a water outlet control valve and an online detector are provided on the water outlet pipeline, a drain control valve is provided on the drain pipeline, and a slag discharge control valve is provided on the slag discharge pipeline.

[0017] In an exemplary embodiment of the present disclosure, a plurality of sieve holes are evenly distributed on the sieve plate.

[0018] In an exemplary embodiment of the present disclosure, a plurality of brackets are arranged at intervals on the circumferential outer wall of the lower portion of the shell, and the brackets are made of metal material.

[0019] In an exemplary embodiment of the present disclosure, the partition, the housing, the screw extruder, and the screen plate are made of metal materials;

[0020] The water inlet pipeline, the water outlet pipeline, the emptying pipeline and the slag discharge pipeline are made of plastic material or metal material.

[0021] Beneficial effects of the present disclosure:

[0022] (1) The utility model adopts graphene sponge to absorb and recover non-polar organic solvents, with high recovery efficiency. No reagents are added during the recovery process of organic solvents. The recovered organic solvents are of high purity and can be directly recycled, with high economic value.

[0023] (2) The graphene sponge adsorption recovery technology adopted by the utility model can avoid the use of high-energy consumption and large investment process technologies such as high-temperature distillation, reagent precipitation, and extraction fractionation, and can simply and quickly separate non-polar organic solvents with low energy consumption.

[0024] (3) The graphene sponge adsorption recovery technology adopted by the utility model does not require high interface clarity of liquid surface stratification separation, thus avoiding manual operation errors and improving recovery efficiency.

[0025] (4) The utility model can realize multiple adsorption and extrusion regeneration and agent cleaning and regeneration of the graphene sponge, and realize the repeated use of the graphene sponge. The graphene sponge has a long working life and does not need to be replaced frequently, which facilitates the maintenance and management of the graphene adsorption device.

[0026] (5) The graphene adsorption device provided by the utility model is compact and simple in structure, and can be added to an existing production line, making the production line easy to modify.

[0027] (6) The graphene adsorption device provided by the utility model has a simple working principle and is easy to realize automatic online control. It is also very suitable for the production and synthesis process of toxic and harmful non-polar organic solvents, reducing the risk of personnel exposure and improving production safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0029] Figure 1 This is a schematic structural diagram of a graphene adsorption device for recovering non-polar organic solvents in one embodiment of the present disclosure;

[0030] Figure 2 This is a schematic diagram of the AA cross section in one embodiment of the present disclosure;

[0031] Figure 3 This is a schematic cross-sectional view of line BB in one embodiment of the present disclosure;

[0032] Description of reference numerals:

[0033] 1. Adsorption device body; 1.1. Partition; 1.2. Shell; 1.3. Screw extruder; 1.3.1. Motor; 1.3.2. Main shaft; 1.3.3. Spiral blade; 1.3.4. Upper sealing plate; 1.3.5. Lower sealing plate; 1.4. Graphene sponge; 1.5. Bracket; 1.6. Water inlet pipeline; 1.6.1. Water inlet control valve; 1.7. Sieve plate; 1.7.1. Sieve hole; 1.8. Water outlet pipeline; 1.8.1. Water outlet control valve; 1.8.2. Online detector; 1.9. Drain pipeline; 1.9.1. Drain control valve; 1.10. Slag discharge pipeline; 1.10.1. Slag discharge control valve; 1.11. Upper cover plate. DETAILED DESCRIPTION

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0035] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0036] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0037] The present disclosure provides a graphene adsorption device for recovering non-polar organic solvents. Figure 1, including an adsorption device body 1, the adsorption device body 1 includes a partition 1.1 and a shell 1.2, the partition 1.1 is sleeved in the shell 1.2, the partition 1.1 divides the shell 1.2 into an adsorption area and a drainage area, and a sieve plate 1.7 is arranged at the bottom of the partition 1.1; a screw extruder 1.3 is arranged in the partition 1.1, and a graphene sponge 1.4 is arranged on the screw extruder 1.3, a water inlet pipeline 1.6 and an emptying pipeline 1.9 connected to the adsorption area, and a slag discharge pipeline 1.10 connected to the drainage area are arranged at the bottom of the shell 1.2, and a water outlet pipeline 1.8 connected to the drainage area is arranged on one side wall of the shell 1.2.

[0038] In the embodiment of the present disclosure, the graphene adsorption device is composed of a partition 1.1, a shell 1.2, a screw extruder 1.3, a graphene sponge 1.4, a water inlet pipeline 1.6, a sieve plate 1.7, a water outlet pipeline 1.8, an emptying pipeline 1.9 and a slag discharge pipeline 1.10. The partition 1.1 is installed in the shell 1.2, and the partition 1.1 divides the shell 1.2 into an adsorption area and a drainage area. The sieve plate 1.7 is installed at the bottom of the partition 1.1. The inside of the partition 1.1 is the adsorption area, and the area between the partition 1.1 and the shell 1.2 is the drainage area. The adsorption area is connected to the top of the drainage area. The screw extruder 1.3 is installed in the adsorption area in the partition 1.1. The graphene sponge 1.4 is installed on the screw extruder 1.3; the mixed solution to be treated flows into the shell 1.2 through the water inlet pipe 1.6, and flows into the adsorption area after being filtered through the sieve plate 1.7. The partition 1.1 controls the liquid level and makes the liquid form a baffled flow state. After the graphene sponge 1.4 adsorbs the non-polar organic solvent in the liquid, other components follow the liquid into the drainage area and are discharged through the water outlet pipe 1.8. After the graphene sponge 1.4 is saturated with adsorption, it is extruded and regenerated through the screw extruder 1.3, and the extruded non-polar organic solvent is discharged through the emptying pipe 1.9. The residual liquid in the drainage area is discharged through the slag discharge pipe 1.10.

[0039] In the embodiment of the present disclosure, after the graphene sponge 1.4 has been used for a period of time, after the graphene sponge 1.4 has completed extrusion regeneration, a cleaning agent is introduced into the shell 1.2 through the water inlet pipe 1.6 to achieve soaking and cleaning of the graphene sponge 1.4. After soaking for a period of time, the graphene sponge 1.4 is squeezed by the spiral extruder 1.3 to discharge the cleaning agent adsorbed by the graphene sponge 1.4, thereby achieving cleaning and regeneration of the graphene sponge 1.4.

[0040] Compared with the existing non-polar organic solvent separation device, the graphene adsorption device uses graphene sponge to absorb and recover non-polar organic solvents, with high recovery efficiency. The graphene sponge is extruded and regenerated through a spiral extruder, and the graphene sponge is cleaned and regenerated by a cleaning agent, thereby realizing the repeated use of the graphene sponge and reducing the recovery cost of the non-polar organic solvent.

[0041] In one embodiment of the present disclosure, see Figure 1 and Figure 2 The screw extruder 1.3 includes a motor 1.3.1, a main shaft 1.3.2 and a spiral blade 1.3.3. The top of the housing 1.2 is provided with an upper cover plate 1.11. The motor 1.3.1 is provided at the top of the upper cover plate 1.11. The main shaft 1.3.2 is provided in the partition plate 1.1. The top of the main shaft 1.3.2 passes through the upper cover plate 1.11 and is connected to the output end of the motor 1.3.1. The main shaft 1.3.2 is rotatably connected to the upper cover plate 1.11. The spiral blade 1.3.3 is spirally provided on the main shaft 1.3.2. The graphene sponge 1.4 is evenly distributed on the surface of the spiral blade 1.3.3. In this way, the graphene sponge 1.4 can be transported to the bottom of the adsorption area through the rotation of the spiral blade 1.3.3, and the saturated graphene sponge 1.4 can be squeezed to discharge the non-polar organic solvent adsorbed by the graphene sponge 1.4, so as to achieve the regeneration of the graphene sponge 1.4.

[0042] In one embodiment of the present disclosure, see Figure 1 and Figure 3 The screw extruder 1.3 also includes an upper sealing plate 1.3.4 and a lower sealing plate 1.3.5. The upper sealing plate 1.3.4 is arranged at the bottom of the upper cover plate 1.11. The top of the main shaft 1.3.2 passes through the upper sealing plate 1.3.4 and is rotatably connected to the upper sealing plate 1.3.4. The lower sealing plate 1.3.5 is arranged at the top of the sieve plate 1.7. The bottom of the main shaft 1.3.2 is rotatably connected to the lower sealing plate 1.3.5. In this way, the spiral blade 1.3.3 can be installed in the partition 1.1, which is convenient for the graphene sponge 1.4 to adsorb the non-polar organic solvent in the mixed solution, and convenient for the extrusion regeneration of the adsorption saturated graphene sponge 1.4.

[0043] Alternatively, see Figure 1 The intervals between the spiral blades 1.3.3 decrease from top to bottom. In this way, the graphene sponge 1.4 can be transported to the bottom of the adsorption area following the rotation of the spiral blades 1.3.3, so that the graphene sponges 1.4 can be squeezed and regenerated.

[0044] In one embodiment of the present disclosure, see Figure 1 The graphene sponge 1.4 is evenly distributed on the surface of the spiral blade 1.3.3, and the shape of the graphene sponge 1.4 is a cube or a sphere. In this way, the non-polar organic solvent in the mixed solution can be fully adsorbed to improve the recovery effect; at the same time, it is easy to follow the rotation of the spiral blade 1.3.3 and quickly concentrate at the bottom of the adsorption area, thereby improving the mutual squeezing effect of the graphene sponge 1.4.

[0045] It is to be understood that the graphene sponge 1.4 may also take shapes other than a cube or a sphere.

[0046] In one embodiment of the present disclosure, the graphene sponge 1.4 is made of a three-dimensional multi-skeleton sponge modified with a graphene base. In this way, the graphene sponge 1.4 has super-hydrophobic properties, can achieve rapid absorption of non-polar organic solvents, and improve the recovery effect of the graphene sponge 1.4 on non-polar organic solvents.

[0047] Optionally, the water-phase static contact angle of the graphene sponge 1.4 is greater than 150 degrees. In this way, the absorption effect of the graphene sponge 1.4 on non-polar organic solvents can be further improved.

[0048] Optionally, the graphene base can be made of materials such as graphene oxide and graphene.

[0049] Optionally, the sponge can be made of materials such as polyurethane and melamine.

[0050] In one embodiment of the present disclosure, see Figure 1 The water inlet pipeline 1.6 is provided with a water inlet control valve 1.6.1, the water outlet pipeline 1.8 is provided with a water outlet control valve 1.8.1 and an online detector 1.8.2, the emptying pipeline 1.9 is provided with an emptying control valve 1.9.1, and the slag discharge pipeline 1.10 is provided with a slag discharge control valve 1.10.1. In this way, the water inlet pipeline 1.6, the water outlet pipeline 1.8, the emptying pipeline 1.9 and the slag discharge pipeline 1.10 can be controlled, so as to facilitate the control of the liquid flowing into and out of the adsorption device body 1.

[0051] It can be understood that the mixed solution flows into the adsorption device body 1 through the water inlet pipe 1.6 and the water inlet control valve 1.6.1; the recovered liquid is discharged from the adsorption device body 1 through the water outlet pipe 1.8 and the water outlet control valve 1.8.1, and the online detector 1.8.2 is used to detect the concentration of the non-polar organic solvent in the outflowing liquid in real time to determine whether to regenerate the graphene sponge 1.4; the non-polar organic solvent squeezed out of the graphene sponge 1.4 is discharged from the adsorption device body 1 through the emptying pipe 1.9 and the emptying control valve 1.9.1 and recovered; the residue in the mixed solution is discharged from the adsorption device body 1 through the slag discharge pipe 1.10 and the slag discharge control valve 1.10.1.

[0052] In one embodiment of the present disclosure, see Figure 3 The sieve plate 1.7 is evenly distributed with a plurality of sieve holes 1.7.1. In this way, the mixed solution can be fully filtered, the impurities in the mixed solution can be reduced, and the graphene sponge 1.4 can be conveniently used to absorb the non-polar organic solvent.

[0053] In one embodiment of the present disclosure, see Figure 1A plurality of brackets 1.5 are arranged at intervals on the circumferential outer wall of the lower part of the shell 1.2, and the brackets 1.5 are made of metal material. In this way, the strength of the brackets 1.5 can be improved, and the stability of the adsorption device body 1 can be improved.

[0054] In one embodiment of the present disclosure, the partition 1.1, the housing 1.2, the screw extruder 1.3, and the sieve plate 1.7 are made of metal materials, so that the strength of the partition 1.1, the housing 1.2, the screw extruder 1.3, and the sieve plate 1.7 can be improved, and the service life of the adsorption device body 1 can be increased.

[0055] Optionally, the water inlet pipeline 1.6, the water outlet pipeline 1.8, the emptying pipeline 1.9 and the slag discharge pipeline 1.10 are made of plastic material or metal material. In this way, the corrosion resistance of the water inlet pipeline 1.6, the water outlet pipeline 1.8, the emptying pipeline 1.9 and the slag discharge pipeline 1.10 can be improved, and the service life of the water inlet pipeline 1.6, the water outlet pipeline 1.8, the emptying pipeline 1.9 and the slag discharge pipeline 1.10 can be increased.

[0056] Optionally, the metal material may be any one of 316L stainless steel, 304 stainless steel, cast iron, and titanium alloy.

[0057] In the embodiments of the present disclosure, see Figures 1 to 3 The working process of the graphene adsorption device for non-polar organic solvent recovery is briefly described as follows:

[0058] When the present invention is used, firstly, a mixture of non-polar organic solvent, water and other solvents formed in the synthesis and preparation process is lifted to the water inlet pipeline 1.6 by a lifting pump, and flows into the adsorption device body 1 through the water inlet pipeline 1.6 and the water inlet control valve 1.6.1, and evenly enters the adsorption area of ​​the partition 1.1 after screening and filtration by the sieve plate 1.7. Under the action of the partition 1.1, the liquid entering the partition 1.1 flows in a baffled state. When the liquid passes through the graphene sponge 1.4, the non-polar organic solvent is adsorbed on the graphene sponge 1.4 under the action of the super hydrophobic non-polar solvent of the graphene sponge 1.4, and other components Then, as the liquid flows into the drainage area, it is discharged from the adsorption device body 1 through the outlet pipe 1.8; when the concentration detection value of the non-polar organic solvent in the treated liquid by the online detector 1.8.2 exceeds the process set value, the outlet control valve 1.8.1 and the inlet control valve 1.6.1 are automatically closed. At this time, the graphene sponge 1.4 is saturated with adsorption, and then the emptying control valve 1.9.1 and the slag discharge control valve 1.10.1 are opened, and the residual mixed solution in the adsorption device body 1 is discharged by gravity through the emptying pipe 1.9 and the slag discharge pipe 1.10, and the discharged mixed solution returns to the original mixed liquid end. After the mixed solution is emptied, the slag discharge control valve 1 is closed. .10.1, so that the emptying control valve 1.9.1 is continuously opened, and the graphene sponge 1.4 naturally settles on the surface of each layer of the spiral blades 1.3.3; the motor 1.3.1 is started to drive the main shaft 1.3.2 and the spiral blades 1.3.3 to rotate. Since the intervals between the spiral blades 1.3.3 decrease from top to bottom, when the spiral blades 1.3.3 rotate in the direction of conveying materials downward, the graphene sponge 1.4 is gradually transported to the bottom of the partition 1.1 with the rotation of the spiral blades 1.3.3, and as the rotation continues, the graphene sponge 1.4 is concentrated at the bottom of the partition 1.1, forming a multi-layer sponge in a limited space. The graphene sponge 1.4 is squeezed against each other, thereby squeezing out the non-polar organic solvent adsorbed in the graphene sponge 1.4, and discharged through the emptying pipeline 1.9 for recycling and storage; when the non-polar organic solvent recovered by the graphene sponge 1.4 is squeezed, the motor 1.3.1 is started in reverse, so that the spiral blades 1.3.3 rotate in the opposite direction, and the graphene sponge 1.4 is gradually rotated and transported from the bottom to each layer of spiral blades 1.3.3, and the graphene sponge 1.4 is restored to the initial state, and then the emptying control valve 1.9.1 is closed, and the water outlet control valve 1.8.1 and the water inlet control valve 1.6.1 are opened, and the adsorption device body 1 enters the next cycle;

[0059] When the interval time of extrusion regeneration of the graphene sponge 1.4 is less than the prescribed period, after completing the extrusion regeneration stage, close the emptying control valve 1.9.1, open the water inlet control valve 1.6.1, and inject the cleaning agent into the adsorption device body 1 through the water inlet pipe 1.6, and fully soak and clean the graphene sponge 1.4. The soaking time is 2 to 60 minutes. After the cleaning is completed, repeat the above-mentioned rotation and extrusion process. The ability of the fully cleaned graphene sponge 1.4 to adsorb non-polar organic solvents can be restored to more than 80%, thereby realizing the recycling of the graphene sponge 1.4.

[0060] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A graphene adsorption device for recovering non-polar organic solvents, comprising an adsorption device body (1), characterized in that: The adsorption device body (1) comprises a partition (1.1) and a shell (1.2); the partition (1.1) is sleeved in the shell (1.2); the partition (1.1) divides the shell (1.2) into an adsorption area and a drainage area; a sieve plate (1.7) is provided at the bottom end of the partition (1.1); A screw extruder (1.3) is arranged inside the partition (1.1), a graphene sponge (1.4) is arranged on the screw extruder (1.3), a water inlet pipeline (1.6) and a drain pipeline (1.9) connected to the adsorption area, and a slag discharge pipeline (1.10) connected to the drainage area are arranged at the bottom end of the shell (1.2), and a water outlet pipeline (1.8) connected to the drainage area is arranged on one side wall of the shell (1.2).

2. A graphene adsorption device for recovering non-polar organic solvents according to claim 1, characterized in that: The screw extruder (1.3) comprises a motor (1.3.1), a main shaft (1.3.2) and a screw blade (1.3.3). An upper cover plate (1.11) is arranged at the top of the shell (1.2); the motor (1.3.1) is arranged at the top of the upper cover plate (1.11); the main shaft (1.3.2) is arranged in the partition plate (1.1); the top of the main shaft (1.3.2) passes through the upper cover plate (1.11) and is connected to the output end of the motor (1.3.1); the main shaft (1.3.2) is rotatably connected to the upper cover plate (1.11); the spiral blade (1.3.3) is spirally arranged on the main shaft (1.3.2); and the graphene sponge (1.4) is evenly distributed on the surface of the spiral blade (1.3.3).

3. A graphene adsorption device for recovering non-polar organic solvents according to claim 2, characterized in that: The screw extruder (1.3) further comprises an upper sealing plate (1.3.4) and a lower sealing plate (1.3.5). The upper sealing plate (1.3.4) is arranged at the bottom end of the upper cover plate (1.11), and the top end of the main shaft (1.3.2) passes through the upper sealing plate (1.3.4) and is rotatably connected to the upper sealing plate (1.3.4); The lower sealing plate (1.3.5) is arranged at the top end of the screen plate (1.7), and the bottom end of the main shaft (1.3.2) is rotatably connected to the lower sealing plate (1.3.5).

4. A graphene adsorption device for recovering non-polar organic solvents according to claim 2, characterized in that: The intervals between the spiral blades (1.3.3) decrease from top to bottom.

5. The graphene adsorption device for recovering non-polar organic solvents according to claim 1, characterized in that: The graphene sponge (1.4) is in the shape of a cube or a sphere.

6. The graphene adsorption device for recovering non-polar organic solvents according to claim 1, characterized in that: The graphene sponge (1.4) is made of a three-dimensional multi-skeleton sponge modified by a graphene base.

7. The graphene adsorption device for recovering non-polar organic solvents according to claim 1, characterized in that: The water inlet pipeline (1.6) is provided with a water inlet control valve (1.6.1), the water outlet pipeline (1.8) is provided with a water outlet control valve (1.8.1) and an online detector (1.8.2), the drain pipeline (1.9) is provided with a drain control valve (1.9.1), and the slag discharge pipeline (1.10) is provided with a slag discharge control valve (1.10.1).

8. The graphene adsorption device for recovering non-polar organic solvents according to claim 1, characterized in that: The sieve plate (1.7) is evenly distributed with a plurality of sieve holes (1.7.1).

9. The graphene adsorption device for recovering non-polar organic solvents according to claim 1, characterized in that: A plurality of brackets (1.5) are arranged at intervals on the circumferential outer wall of the lower part of the shell (1.2), and the brackets (1.5) are made of metal material.

10. The graphene adsorption device for recovering non-polar organic solvents according to claim 1, characterized in that: The partition plate (1.1), the shell (1.2), the screw extruder (1.3) and the sieve plate (1.7) are made of metal materials; The water inlet pipeline (1.6), the water outlet pipeline (1.8), the drain pipeline (1.9) and the slag discharge pipeline (1.10) are made of plastic material or metal material.

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