CN219489610U - Reduction device for graphene oxide - Google Patents
Reduction device for graphene oxide Download PDFInfo
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- CN219489610U CN219489610U CN202320204943.0U CN202320204943U CN219489610U CN 219489610 U CN219489610 U CN 219489610U CN 202320204943 U CN202320204943 U CN 202320204943U CN 219489610 U CN219489610 U CN 219489610U
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Abstract
The utility model relates to the technical field of graphene production and discloses a reduction device of graphene oxide, wherein the reduction device of graphene oxide comprises a reduction unit, and the reduction unit comprises a material conveying pipe, a conveying mechanism and a heating mechanism; the material conveying pipe is provided with a feed inlet and a discharge outlet for the graphene oxide to enter and exit respectively; the conveying mechanism is arranged in the material conveying pipe, and can receive graphene oxide entering from the feeding hole and convey the graphene oxide to the discharging hole; the heating mechanism is arranged to be capable of heating the graphene oxide conveyed by the conveying mechanism. This reduction device of graphene oxide is through setting up conveying mechanism to can make graphene oxide be heated by heating mechanism at the in-process that removes, like this, can not too concentrated heat graphene oxide, but make graphene oxide be heated evenly at the in-process that removes.
Description
Technical Field
The utility model relates to the technical field of graphene production, in particular to a reduction device for graphene oxide.
Background
The microwave is an electromagnetic wave with extremely short wavelength, and has the characteristics of short wavelength, high frequency, strong penetrating capacity, obvious quantum characteristics and the like. The microwave heating is to use microwaves as an energy source, when the microwaves interact with molecules of substances, molecular polarization, orientation, friction, collision and absorption of the microwaves are generated to generate a thermal effect, the microwaves are heated by the object after absorption of the microwaves, and the heating is started from the inside and the outside of the object at the same time, so that the inside and the outside of the object can be heated at the same time. There are many advantages that are not realized by conventional heating modes, since conduction or convection is not required.
The thermal reduction is performed under high temperature conditions, so that the energy consumption is high and the cost is also high. It is generally believed that thermal reductionThe mechanism of (2) is: the graphene oxide is heated up rapidly, and oxygen-containing groups are decomposed to generate CO and CO under the high temperature condition 2 、H 2 O, etc., thereby removing a substantial portion of the oxygen-containing functional groups. The traditional electric heating reduction puffing technology has the problems of time consumption in heating and slow cooling rate, and has low heating efficiency and high energy consumption, and the microwave reduction puffing furnace can be started and used at once, so that the heating reduction efficiency is greatly improved.
At present, when graphene oxide is heated, the graphene oxide in a pipe is directly heated by a heat source such as microwaves, so that a overheating phenomenon is easy to occur, and the phenomena of coking of edges or sharp corners of materials, surface hardening of products, internal gelatinization and the like are caused.
Disclosure of Invention
The utility model aims to solve the problems of coking of material edges or sharp corner parts, surface hardening of products, internal pasting and the like caused by overheating easily generated when heating and reducing graphene oxide in the prior art, and provides a reduction device of graphene oxide.
In order to achieve the above object, an aspect of the present utility model provides a reduction apparatus for graphene oxide, the reduction apparatus including a reduction unit including:
the material conveying pipe is provided with a feed inlet and a discharge outlet for the graphene oxide to enter and exit respectively;
the conveying mechanism is arranged in the material conveying pipe and can be used for receiving graphene oxide entering from the feeding hole and conveying the graphene oxide to the discharging hole; and
and the heating mechanism is arranged to be capable of heating the graphene oxide conveyed by the conveying mechanism.
According to the technical scheme, the conveying mechanism capable of conveying the graphene oxide is arranged in the material conveying pipe, so that the graphene oxide is heated by the heating mechanism in the moving process, and therefore the graphene oxide is not heated in an excessively concentrated manner, and is heated uniformly in the moving process, and therefore phenomena such as coking of material edges or sharp corners, surface hardening of products and internal pasting are basically avoided.
Preferably, the conveying mechanism comprises a pair of conveying rollers arranged at intervals along the axial direction of the material conveying pipe, and the conveying mechanism further comprises a conveying belt arranged on the pair of conveying rollers.
Preferably, the material conveying pipe is a transparent piece;
the heating mechanism comprises a microwave generator arranged outside the material conveying pipe, and the microwave generator is arranged so that generated microwaves penetrate through the material conveying pipe to heat the graphene oxide.
Preferably, the conveyor belt includes a conveying portion that can be used to convey graphene oxide;
the microwave generator is arranged opposite to the conveying part; and/or
The heating mechanism comprises a plurality of microwave generators, and the microwave generators are uniformly arranged along the conveying direction of the conveying part.
Preferably, the reduction unit includes an auxiliary thermal layer disposed outside the material conveying pipe, the auxiliary thermal layer being configured to be able to absorb microwaves.
Preferably, the reduction unit comprises a feeding mechanism, the feeding mechanism comprises a feeding pipe assembled at the feeding hole and extending outwards from the material conveying pipe, and a hopper arranged at one end of the feeding pipe away from the feeding hole, wherein the feeding pipe is close to the material conveying pipe, and the hopper is tapered.
Preferably, the feeding mechanism comprises a blanking roller assembled in the feeding pipe, the blanking roller comprises a roller body arranged along the radial direction of the feeding pipe and a plurality of bulges uniformly arranged along the circumferential direction of the roller body, wherein the roller body is arranged to be rotatable along the axis of the roller body; and/or
The feeding mechanism comprises a discharging control valve arranged on the feeding pipe, and the discharging control valve is arranged to control the circulation state of the material in the feeding pipe.
Preferably, the material conveying pipe is provided with an air inlet, and the reduction unit comprises an air inlet pipeline which is communicated with the air inlet and can convey inert gas to the air inlet; or alternatively
The material conveying pipe is provided with an air inlet, the reduction unit comprises an air inlet pipeline, the air inlet pipeline is communicated with the air inlet and can convey inert gas to the air inlet, the reduction device of the graphene oxide further comprises an air inlet control valve arranged on the air inlet pipeline, and the air inlet control valve is arranged to control the circulation state of materials in the air inlet pipeline.
Preferably, the reduction unit comprises a discharge pipe arranged at the discharge port, the reduction unit comprises a purging pipeline communicated with the discharge pipe, and the purging pipeline is arranged to convey gas to the discharge pipe so as to purge the material in the discharge pipe.
Preferably, the reduction device of the graphene oxide comprises a shell encapsulated outside the reduction unit, and the shell is provided with an avoidance port for avoiding a corresponding pipeline.
Drawings
Fig. 1 is a schematic cross-sectional structure of a reduction apparatus for graphene oxide according to a preferred embodiment of the present utility model;
fig. 2 is a schematic cross-sectional structure of a charging mechanism of the reduction apparatus for graphene oxide shown in fig. 1;
fig. 3 is a schematic plan view of a conveying mechanism of the reduction apparatus for graphene oxide shown in fig. 1.
Description of the reference numerals
A reduction device for 10-graphene oxide; 11-a feeding mechanism; 110-a feeding tube; 112-hopper; 114-a blanking roller; 116-blanking driving motor; 118-a blanking control valve; 12-a material conveying pipe; 120-a discharge hole; 130-an air inlet pipeline; 132-an intake control valve; 14-a conveying mechanism; 140-conveying rollers; 142-a conveyor belt; 142 a-a conveying section; 144-motor; 146-speed reducer; 150-discharging pipe; 152-purge line; 154-purge control valve; 156-a discharge control valve; 158-a gas transmission main pipe; 159-a gas transmission total control valve; 16-a heating mechanism; 17-a housing.
Detailed Description
In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, left, right" and the like are used generally to refer to the orientation understanding shown in the drawings and in practice, and "inner, outer" refer to the inner, outer of the outline of the components.
The utility model provides a reduction device of graphene oxide, wherein the reduction device 10 of graphene oxide comprises a reduction unit, and the reduction unit comprises a material conveying pipe 12, a conveying mechanism 14 and a heating mechanism 16. Wherein, the material conveying pipe 12 is provided with a feeding port and a discharging port 120 for respectively feeding and discharging graphene oxide; the conveying mechanism 14 is disposed in the material conveying pipe 12, and the conveying mechanism 14 is capable of receiving graphene oxide entering from the feed inlet and conveying the graphene oxide to the discharge outlet 120, it is understood that the graphene oxide falls to the conveying mechanism 14 after entering into the material conveying pipe 12 from the feed inlet, and is conveyed to the discharge outlet 120 by the conveying mechanism 14; the heating mechanism 16 is configured to be capable of heating the graphene oxide conveyed by the conveying mechanism 14, and the heating mechanism 16 heats the graphene oxide to reduce the graphene oxide, wherein the form of the heating mechanism 16, such as a microwave generator, may be selected according to actual requirements. By arranging the conveying mechanism 14 capable of conveying the graphene oxide in the material conveying pipe 12, the graphene oxide can be heated by the heating mechanism 16 in the moving process, so that the graphene oxide cannot be heated in an excessively concentrated manner, but is heated uniformly in the moving process, and phenomena such as coking of edges or sharp corners of materials, surface hardening of products, internal pasting and the like are basically not easy to occur. In addition, since the time that the material, i.e., graphene oxide, passes through the heatable region can be controlled by adjusting the speed of the conveying mechanism 14, an optimal reaction time can be selected, and thus the reduction quality of graphene oxide can be greatly improved. In addition, since graphene oxide can be continuously conveyed by the conveying mechanism 14, compared with the case where the conveying mechanism 14 is not provided, continuous operation can be realized.
As shown in connection with fig. 1 and 3, the conveyor mechanism 14 may include a pair of conveyor rollers 140 disposed at intervals along the axial direction of the material conveying pipe 12, and the conveyor mechanism 14 may further include a conveyor belt 142 disposed on the pair of conveyor rollers 140. The conveyor belt 142 may be annular, the conveyor belt 142 may be supported on a pair of conveying rollers 140, and the conveyor belt 142 may rotate circularly under the combined action of the pair of conveying rollers 140. It can be appreciated that the conveying roller 140 can rotate around the rotation axis of the conveying roller 140 under the combined driving action of the motor 144 and the speed reducer 146, so as to drive the conveying belt 142 to circularly rotate, so as to realize the conveying operation of the graphene oxide. It is to be appreciated that the conveyor belt 142 can extend along the axis of the material delivery tube 12 and that the conveyor belt 142 can be positioned substantially between the feed inlet and the discharge outlet 120.
The material conveying pipe 12 may be a transparent member, for example, the material conveying pipe 12 may be a quartz pipe, and the heating mechanism 16 may include a microwave generator disposed outside the material conveying pipe 12, where the microwave generator may be configured to enable the generated microwaves to penetrate through the material conveying pipe 12 to heat the graphene oxide, that is, the microwave generator may heat the graphene oxide by using the generated microwaves, so that the heating speed is fast, the puffing efficiency is high, and the reduction efficiency is greatly improved. Wherein, the operating frequency of the microwave generator can be set to 2.45GHz, and the power can be set to 1000W.
It is understood that the conveyor belt 142 may include a conveyor portion 142a capable of conveying graphene oxide and a return portion connected to the conveyor portion 142a, wherein the conveyor portion 142a and the return portion may together form a loop shape. The conveyor belt 142 may have microwave-transmitting properties and high temperature resistance, for example, a polyphenylene sulfide/ceramic composite material may be selected as the material of the conveyor belt 142.
The microwave generator and the conveying part 142a may be disposed opposite to each other, so that the microwave generator may preferably heat the graphene oxide conveyed by the conveying part 142a by microwaves.
In order to further improve the heating reduction efficiency, a plurality of microwave generators may be provided, and the plurality of microwave generators may be uniformly provided along the conveying direction of the conveying part 142a, so that the plurality of microwave generators may heat the graphene oxide together, thereby greatly improving the reduction efficiency of the graphene oxide.
In addition, the reduction unit may include an auxiliary thermal layer 18 disposed outside the material conveying pipe 12, and the auxiliary thermal layer 18 may be configured to absorb microwaves, so that a thermal insulation effect may be provided for the material conveying pipe 12, thereby ensuring uniformity of a temperature field in the material conveying pipe 12. Wherein the auxiliary thermal layer 18 may be a ceramic member.
As shown in connection with fig. 1 and 2, the reduction unit may include a charging mechanism 11, and the charging mechanism 11 may include a charging pipe 110 assembled at the charging port and extending toward the outside of the material conveying pipe 12, and a hopper 112 provided at one end of the charging pipe 110 away from the charging port, wherein the hopper 112 is tapered in a direction in which the charging pipe 110 approaches the material conveying pipe 12. By providing the feeding mechanism 11, graphene oxide can be better conveyed into the material conveying pipe 12, and thus, uniformity of materials on the conveying belt 142 can be improved. It should be noted that when the auxiliary heating layer 18 is provided outside the material transporting pipe 12, the feeding pipe 110 may pass through the auxiliary heating layer 18 to communicate with the feeding port.
To further enhance the uniformity of the material on the conveyor belt 142, as shown in fig. 2, the feeding mechanism 11 may include a discharging roller 114 fitted within the feeding tube 110, the discharging roller 114 may include a roller body disposed in a radial direction of the feeding tube 110 and a plurality of protrusions disposed in a circumferential direction of the roller body, the plurality of protrusions may be uniformly disposed in the circumferential direction of the roller body, it may be understood that the discharging roller 114 may extend in the radial direction of the feeding tube 110, wherein the roller body may be disposed to be rotatable along an axis of the roller body, for example, the roller body may be rotatable about its own axis by a driving of the discharging driving motor 116, so that the material falls in a gap between the two protrusions, thereby causing the material to be uniformly scattered onto the material conveying tube 12.
In order to further control the scattering uniformity of the material, a blanking control valve 118 may be disposed in the feeding tube 110, where the blanking control valve 118 may be configured to control the circulation state of the material in the feeding tube 110, and it is understood that the opening and closing of the blanking control valve 118 may control the circulation state of the material in the feeding tube 110, for example, when the blanking control valve 118 is in an open state, the material in the feeding tube 110 is in a circulating state, and when the blanking control valve 118 is in a closed state, the material in the feeding tube 110 is in a shut-off state.
The material conveying pipe 12 can be provided with the air inlet, can set up air inlet pipeline 130 in air inlet department, and air inlet pipeline 130 can communicate in the air inlet and can carry inert gas such as nitrogen gas to the air inlet, like this, the accessible air inlet pipeline 130 lets in inert gas into material conveying pipe 12 to be in inert gas atmosphere in making material conveying pipe 12, be favorable to improving the reduction quality of graphene oxide.
In order to control the flow state of the inert gas in the gas inlet line 130, a gas inlet control valve 132 may be provided on the gas inlet line 130, and the gas inlet control valve 132 may be provided to be able to control the flow state of the material in the gas inlet line 130. The opening and closing of the air inlet control valve 132 can control the circulation of the material in the air inlet pipeline 130, for example, when the air inlet control valve 132 is in an open state, the material in the air inlet pipeline 130 is in a circulating state, and when the air inlet control valve 132 is in a closed state, the material in the air inlet pipeline 130 is in a shut-off state. It should be noted that when the auxiliary thermal layer 18 is disposed outside the material conveying pipe 12, the air inlet pipe 130 may be connected to the air inlet through the auxiliary thermal layer 18.
As shown in fig. 1, a discharge pipe 150 may be provided at the discharge outlet 120, and a discharge control valve 156 may be provided on the discharge pipe 150 in order to control the circulation state of the material in the discharge pipe 150.
In addition, a purge line 152 may be provided in communication with the discharge conduit 150, and the purge line 152 may be configured to deliver gas to the discharge conduit 150 to purge material from the discharge conduit 150. The purge line 152 may be used to deliver an inert gas so that the inert gas may be used to purge the material from the discharge tube 150.
As shown in fig. 1, in order to make the pipe structure more concise, a gas supply header 158 may be provided, one end of the gas supply header 158 may be respectively connected to the gas inlet pipe 130 and the purge pipe 152, and a gas supply header control valve 159 capable of controlling the circulation state of the material in the gas supply header 158 may be mounted on the gas supply header 158.
In order to make the structure of the reduction device 10 of whole graphene oxide more stable, can set up the shell 17 of encapsulation outside the reduction unit, can be provided with on the shell 17 and dodge the mouth of dodging of corresponding pipeline, for example, can set up the first mouth of dodging that can dodge filling tube 110, can also set up the second mouth of dodging that can dodge gas-supply house steward 158, in addition, can set up the third mouth of dodging that can dodge row's material pipe 150. It should also be noted that when the heating mechanism 16 is a microwave generator, the housing 17 may be a metal piece, which may prevent microwave leakage.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. Within the scope of the technical idea of the utility model, a number of simple variants of the technical solution of the utility model are possible, including combinations of individual specific technical features in any suitable way. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (10)
1. A reduction device of graphene oxide, characterized in that the reduction device (10) of graphene oxide comprises a reduction unit comprising:
the material conveying pipe (12), the material conveying pipe (12) is provided with a feed inlet and a discharge outlet (120) for graphene oxide to enter and exit respectively;
the conveying mechanism (14) is arranged in the material conveying pipe (12), and the conveying mechanism (14) can receive graphene oxide entering from the feeding hole and convey the graphene oxide to the discharging hole (120); and
and a heating mechanism (16), wherein the heating mechanism (16) is configured to be capable of heating the graphene oxide conveyed by the conveying mechanism (14).
2. The reduction device of graphene oxide according to claim 1, wherein the conveying mechanism (14) includes a pair of conveying rollers (140) disposed at intervals along an axial direction of the material conveying pipe (12), and the conveying mechanism (14) further includes a conveying belt (142) disposed on the pair of conveying rollers (140).
3. The reduction device of graphene oxide according to claim 2, wherein the material conveying pipe (12) is a transparent member;
the heating mechanism (16) comprises a microwave generator arranged outside the material conveying pipe (12), and the microwave generator is arranged so that generated microwaves penetrate through the material conveying pipe (12) to heat graphene oxide.
4. A reduction device of graphene oxide according to claim 3, wherein the conveyor belt (142) comprises a conveyor portion (142 a) that can be used for conveying graphene oxide;
the microwave generator is arranged opposite to the conveying part (142 a); and/or
The heating mechanism (16) comprises a plurality of microwave generators which are uniformly arranged along the conveying direction of the conveying part (142 a).
5. A reduction device of graphene oxide according to claim 3, wherein the reduction unit comprises an auxiliary thermal layer (18) arranged outside the material conveying pipe (12), the auxiliary thermal layer (18) being configured to be able to absorb microwaves.
6. The reduction device of graphene oxide according to claim 1, wherein the reduction unit comprises a charging mechanism (11), the charging mechanism (11) comprises a charging pipe (110) assembled at the charging port and extending outwards towards the material conveying pipe (12), and a hopper (112) arranged at one end of the charging pipe (110) away from the charging port, wherein the hopper (112) is tapered in a direction in which the charging pipe (110) approaches the material conveying pipe (12).
7. The reduction device of graphene oxide according to claim 6, wherein the charging mechanism (11) includes a discharging roller (114) fitted inside the charging pipe (110), the discharging roller (114) including a roller body disposed along a radial direction of the charging pipe (110) and a plurality of protrusions uniformly disposed along a circumferential direction of the roller body, wherein the roller body is disposed to be rotatable along an axis of the roller body; and/or
The feeding mechanism (11) comprises a blanking control valve (118) arranged on the feeding pipe (110), and the blanking control valve (118) is arranged to control the circulation state of materials in the feeding pipe (110).
8. The reduction device of graphene oxide according to claim 7, wherein the material conveying pipe (12) is provided with an air inlet, the reduction unit comprises an air inlet pipeline (130), and the air inlet pipeline (130) is communicated with the air inlet and can convey inert gas to the air inlet; or alternatively
The material conveying pipe (12) is provided with an air inlet, the reduction unit comprises an air inlet pipeline (130), the air inlet pipeline (130) is communicated with the air inlet and can convey inert gas to the air inlet, the reduction device (10) of graphene oxide further comprises an air inlet control valve (132) arranged on the air inlet pipeline (130), and the air inlet control valve (132) is arranged to control the circulation state of materials in the air inlet pipeline (130).
9. The graphene oxide reduction device according to claim 1, wherein the reduction unit comprises a discharge pipe (150) arranged at the discharge port (120), the reduction unit comprises a purge pipe (152) communicated with the discharge pipe (150), and the purge pipe (152) is configured to be capable of delivering gas to the discharge pipe (150) to purge the material in the discharge pipe (150).
10. The reduction device of graphene oxide according to any one of claims 1-9, wherein the reduction device (10) of graphene oxide comprises a housing (17) encapsulated outside the reduction unit, and the housing (17) is provided with an avoidance port for avoiding a corresponding pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320204943.0U CN219489610U (en) | 2023-02-13 | 2023-02-13 | Reduction device for graphene oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320204943.0U CN219489610U (en) | 2023-02-13 | 2023-02-13 | Reduction device for graphene oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219489610U true CN219489610U (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320204943.0U Active CN219489610U (en) | 2023-02-13 | 2023-02-13 | Reduction device for graphene oxide |
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| Country | Link |
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| CN (1) | CN219489610U (en) |
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- 2023-02-13 CN CN202320204943.0U patent/CN219489610U/en active Active
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