CN210559403U

CN210559403U - Gas splitter for preparing graphene or other elemental carbon

Info

Publication number: CN210559403U
Application number: CN201920885963.2U
Authority: CN
Inventors: 刘建军
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-05-19
Anticipated expiration: 2029-06-06

Abstract

The utility model provides a gas shunt for preparing graphite alkene or other simple substance carbon, relates to new material preparation technical field, the utility model discloses a set up cooling jacket (5) in the periphery of gas shunt body (4), then let in cooling gas and cool off this internal gas of gas shunt toward the cooling jacket in, effectually prevent that gas from taking place the schizolysis at this internal graphite alkene or other simple substance carbon of production of gas shunt, can also prevent to block up the phenomenon of venthole simultaneously, the utility model has the characteristics of simple structure, excellent in use effect etc. are fit for popularization and application on a large scale.

Description

Gas splitter for preparing graphene or other elemental carbon

[ technical field ] A method for producing a semiconductor device

The utility model relates to a new material preparation technical field, concretely relates to a gas shunt for preparing graphite alkene or other simple substance carbon.

[ background of the invention ]

As is known, graphene is a material consisting of carbon atoms in sp²The hybrid tracks form a hexagonal honeycomb lattice two-dimensional carbon nanomaterial. The graphene has excellent optical, electrical and mechanical properties, has important application prospects in the aspects of materials science, micro-nano processing, energy, biomedicine, drug delivery and the like, and is considered to be a revolutionary material in the future. Andeli Gem and Constantin Novoschloff of physicists of Manchester university in England successfully separate graphene from graphite by using a micromechanical stripping method, so that the common production method of graphene commonly obtains the Nobel prize in 2010Mechanical lift-off, redox, SiC epitaxial growth and Chemical Vapor Deposition (CVD).

Chemical Vapor Deposition (CVD) is a method of producing graphene by vapor deposition using a carbon-containing organic gas as a raw material. This is currently the most efficient method for producing graphene. The graphene prepared by the method has the characteristics of large area and high quality, but at the present stage, the main defects of high production cost, low production efficiency and the like exist, and the process conditions need to be further improved, so that how to provide a device for preparing the graphene or other elemental carbon becomes a long-term technical appeal of the technical personnel in the field, and a gas splitter in the whole device is one of the key components, so that how to provide a gas splitter for preparing the graphene or other elemental carbon also becomes a long-term technical appeal of the technical personnel in the field.

[ summary of the invention ]

In order to achieve the purpose, the utility model provides a gas splitter for preparing graphite alkene or other simple substance carbon, the utility model discloses a set up the cooling jacket at the periphery of gas splitter body, then let in cooling gas in the cooling jacket and cool off the gas in the gas splitter body, prevent effectively that gas from splitting apart in the gas splitter body and producing graphite alkene or other simple substance carbon etc. the utility model has the characteristics of simple structure, excellent in use effect etc.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a gas splitter for preparing graphene or other elemental carbon comprises a hollow shaft, a gas splitter body and a cooling jacket, wherein a plurality of gas outlets and at least one gas inlet are respectively arranged on the gas splitter body, each gas inlet is respectively connected with the hollow shaft extending upwards, the upper end of the hollow shaft is connected with a gas source, the cooling jacket is arranged on the periphery of the gas splitter body, and at least one cooling gas inlet and at least one cooling gas outlet are respectively arranged on the cooling jacket to form the gas splitter for preparing the graphene or other elemental carbon.

The gas splitter for preparing graphene or other elemental carbon is characterized in that the cooling gas outlet is connected with a pressure regulating valve, and the pressure regulating valve is connected with a cooling gas outlet pipe.

The gas splitter for preparing graphene or other elemental carbon is characterized in that the cooling gas outlet is connected with the cooling gas outlet pipe, and the end part of the cooling gas outlet pipe is connected with the pressure regulating valve.

The gas splitter for preparing graphene or other elemental carbon is characterized in that the replacement structure of the cooling sleeve is that the cooling sleeve is arranged on the periphery of the gas splitter body, at least one cooling gas inlet is arranged on the cooling sleeve, the cooling gas inlet is connected with a cooling gas inlet pipe, and at least one cooling gas outlet is arranged on the outer edge surface of the gas splitter body.

The gas splitter for preparing graphene or other elemental carbon is characterized in that a gas drainage plate is arranged between the inner wall of the cooling jacket and the outer edge surface of the gas splitter body.

The gas splitter for preparing graphene or other elemental carbon is characterized in that a gas drainage plate is arranged between the inner wall of the cooling jacket and the bottom surface of the gas splitter body.

The gas splitter for preparing graphene or other simple substance carbon is characterized in that the diameter of the gas outlet is 0.1-1 mm.

The gas splitter for preparing graphene or other elemental carbon is characterized in that the cooling sleeve is of a barrel-shaped structure, the opening end of the cooling sleeve is provided with a connecting ring, the inner edge surface of the connecting ring is connected with the outer edge surface of the gas splitter body, and the connecting ring is respectively provided with at least one cooling gas inlet and at least one cooling gas outlet.

The gas splitter for preparing graphene or other elemental carbon is characterized in that the shape of the gas splitter body is any one of circular, oval or polygonal.

The cooling jacket of the gas splitter for preparing graphene or other elemental carbon has any one of a circular shape, an oval shape and a polygonal shape.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses a set up the cooling jacket in the periphery of gas flow divider body, then let in cooling gas and cool off this internal gas of gas flow divider toward the cooling jacket in, effectually prevent that gas from taking place the schizolysis at this internal graphite alkene or other simple substance carbon of production of gas flow divider, can also prevent to block up the phenomenon of venthole simultaneously, the utility model has the characteristics of simple structure, excellent in use effect etc. are fit for popularization and application on a large scale.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of an alternative construction of the present invention;

fig. 3 is a schematic view of the application of the present invention;

in the figure: 1. a hollow shaft; 2. an air outlet; 3. a cooling gas inlet; 4. a gas splitter body; 5. a cooling jacket; 6. a pressure regulating valve; 7. a cooling gas outlet; 8. a furnace cover; 9. a powder collector; 10. a furnace body; 11. a cooling gas inlet pipe; 12. a cooling gas outlet pipe; 13. a crucible; 14. a gas flow guiding plate.

[ detailed description ] embodiments

The present invention will be explained in more detail by the following examples, which are intended to protect all the changes and improvements within the scope of the present invention, and are not limited to the following examples;

it should be noted that the directions and positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. used in describing the structure of the present invention are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

The gas splitter for preparing graphene or other elemental carbon, which is described with reference to fig. 1 to 3, includes a hollow shaft 1, a gas splitter body 4 and a cooling jacket 5, wherein a plurality of gas outlets 2 and at least one gas inlet are respectively provided on the gas splitter body 4, the diameter of the gas outlets 2 is 0.1 to 1mm, each gas inlet is respectively connected to the hollow shaft 1 extending upward, in the specific implementation, the number of the gas inlet is preferably one, the gas inlet is connected to the hollow shaft 1 extending upward or to a component having a gas inlet function, the upper end of the hollow shaft 1 is respectively connected to a gas source and an upper shaft lifting device, and since the upper shaft lifting device is not a protection range of the present invention, the description will not be repeated; the cooling jacket 5 is arranged on the periphery of the gas splitter body 4, and the purpose of the cooling jacket 5 is to avoid that after methane, acetylene or other mixed gas entering the gas splitter body 4 enters the gas splitter body 4, the methane, acetylene or other mixed gas is directly cracked in the gas splitter body 4 to generate graphene due to high temperature in the gas splitter body 4, the graphene generated in the gas splitter body 4 is deposited to a certain degree and then blocks the gas outlet 2, and the gas splitter body 4 is scrapped in serious cases to cause unnecessary loss and the like; the cooling jacket 5 is respectively provided with at least one cooling gas inlet 3 and at least one cooling gas outlet 7, and the cooling gas inlet 3 is connected with a cooling gas inlet pipe 11 to form the gas splitter for preparing graphene or other elemental carbon.

In specific implementation, the cooling gas outlet 7 can be connected with the cooling gas outlet pipe 12, or can be directly discharged into the molten liquid in the crucible 13 without being connected with the cooling gas outlet pipe 12;

in a specific implementation, in order to ensure the cooling effect, a pressure regulating valve 6 may be connected to the cooling gas outlet 7, and the pressure regulating valve 6 is connected to the cooling gas outlet pipe 12. Or the cooling gas outlet 7 is connected with a cooling gas outlet pipe 12, and the end part of the cooling gas outlet pipe 12 is connected with the pressure regulating valve 6. The pressure control valve 6 is provided at the end of the cooling gas outlet pipe 12 in order to ensure that the pressure control valve 6 is not damaged by the high-temperature melt, and the amount of gas discharged can be adjusted at any time, so in practical implementation, it is preferable to provide the pressure control valve 6 at the end of the cooling gas outlet pipe 12.

Further, in specific implementation, the cooling jacket 5 is replaced by a structure in which the cooling jacket 5 is disposed on the periphery of the gas splitter body 4, at least one cooling gas inlet 3 is disposed on the cooling jacket 5, the cooling gas inlet 3 is connected to a cooling gas inlet pipe 11, and at least one cooling gas outlet 7 is disposed on the outer edge surface of the gas splitter body 4, as shown in fig. 2. In practical application, gas entering the cooling jacket 5 enters the gas splitter body 4 through the cooling gas outlet 7 and is then discharged into molten liquid in the crucible 13 through the gas outlet 2;

further, in order to enhance the cooling effect of the cooling jacket 5 on the gas manifold body 4, a gas flow guiding plate 14 is provided between the inner wall of the cooling jacket 5 and the outer edge surface of the gas manifold body 4. And a gas guide plate 14 is arranged between the inner wall of the cooling jacket 5 and the bottom surface of the gas splitter body 4. The purpose of providing gas flow guiding plate 14 is to make the cooling more even, and when the concrete implementation, gas flow guiding plate 14 can the beading on the inner wall of cooling jacket 5, or the beading face and the bottom surface of beading on gas flow divider body 4, and the concrete implementation can select according to actual conditions.

Further, in specific implementation, the cooling jacket 5 may be configured as a barrel-shaped structure, a connection ring is disposed at an opening end of the cooling jacket 5, an inner edge surface of the connection ring is connected to an outer edge surface of the gas splitter body 4, and at least one cooling gas inlet 3 and at least one cooling gas outlet 7 are respectively disposed on the connection ring.

Further, the outer shape of the gas flow divider body 4 is any one of circular, elliptical, and polygonal. The cooling jacket 5 has any one of a circular shape, an oval shape and a polygonal shape.

The method for preparing graphene or other simple substance carbon comprises the following steps:

step one, melting molten metal:

firstly, covering a furnace cover 8 on a furnace body 10 to form a closed cavity, then starting a power supply, closing a valve positioned at the lower part of a powder collector, integrating the powder collector and the closed cavity, then introducing argon gas into the closed cavity, wherein the pressure is 0.1mpa, heating a crucible 13 through a heater, opening a gas source after metal in the crucible 13 is melted into molten metal, introducing gas in the gas source into a gas splitter body 4 through a hollow shaft 1, then starting an upper shaft lifting device, driving the hollow shaft 1 to slowly descend through the upper shaft lifting device, submerging the gas splitter body 4 below the liquid level of the molten metal, and at the moment, introducing cooling gas into a cooling sleeve 5 to cool the gas splitter body 4 to prevent the gas in the gas source from cracking in the gas splitter body 4; the cooling gas is inert gas;

secondly, cracking to generate graphene:

the gas enters the molten metal and is discharged into the molten metal through the gas outlet 2 on the gas diverter body 4 to form a plurality of bubbles, the gas is decomposed into carbon atoms on the surfaces of the bubbles, the carbon atoms are reassembled into graphene on the surfaces of the bubbles, and then the graphene reaches the surface of the molten metal along with the bubbles and is gathered together; the gas in the gas source is a mixed gas obtained by mixing hydrocarbon gas and inert gas or any one of hydrogen or nitrogen; the hydrocarbon gas in the mixed gas accounts for 2-5% of the total weight of the mixed gas; the hydrocarbon gas is any one of methane, acetylene and natural gas; the pressure of the gas source is 0.1-1 mpa;

step three, collecting stone graphene powder:

and after the step is carried out, after the graphene powder on the surface of the molten metal is gathered to a preset height, starting a blowing source, opening an exhaust port, blowing the graphene powder into a powder collector 9 through a powder collecting pipe by gas in the blowing source through a blowing pipe, and depositing the graphene powder blown into the powder collector 9 downwards.

The utility model discloses when concrete production, can adopt the mobile state production of malleation in the furnace body, when adopting mobile production, can set up air inlet and gas vent on the furnace body respectively.

The details of the above are not described in detail since they are prior art.

The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments, which fall within the scope of the concept and invention.

Claims

1. A gas splitter for the production of graphene or other elemental carbon, comprising a hollow shaft (1), a gas splitter body (4) and a cooling jacket (5), characterized in that: the gas splitter is characterized in that a plurality of gas outlets (2) and at least one gas inlet are respectively arranged on the gas splitter body (4), each gas inlet is respectively connected with an upwardly extending hollow shaft (1), the upper end of the hollow shaft (1) is connected with a gas source, a cooling jacket (5) is arranged on the periphery of the gas splitter body (4), and at least one cooling gas inlet (3) and at least one cooling gas outlet (7) are respectively arranged on the cooling jacket (5) to form the gas splitter for preparing graphene or other elemental carbon.

2. The gas splitter for the production of graphene or other elemental carbon according to claim 1, wherein: the cooling gas outlet (7) is connected with a pressure regulating valve (6), and the pressure regulating valve (6) is connected with a cooling gas outlet pipe (12).

3. The gas splitter for the production of graphene or other elemental carbon according to claim 1, wherein: the cooling gas outlet (7) is connected with a cooling gas outlet pipe (12), and the end part of the cooling gas outlet pipe (12) is connected with a pressure regulating valve (6).

4. The gas splitter for the production of graphene or other elemental carbon according to claim 1, wherein: the replacement structure of cooling jacket (5) is that cooling jacket (5) set up in the periphery of gas flow divider body (4), is equipped with at least one cooling gas air inlet (3) on cooling jacket (5), cooling gas intake pipe (11) are connected in cooling gas air inlet (3), are equipped with at least one cooling gas outlet (7) on the outer fringe face of gas flow divider body (4).

5. The gas splitter for the production of graphene or other elemental carbon according to claim 1, wherein: and a gas drainage plate (14) is arranged between the inner wall of the cooling jacket (5) and the outer edge surface of the gas splitter body (4).

6. The gas splitter for the production of graphene or other elemental carbon according to claim 1, wherein: and a gas drainage plate (14) is arranged between the inner wall of the cooling jacket (5) and the bottom surface of the gas splitter body (4).

7. The gas splitter for the production of graphene or other elemental carbon according to claim 1, wherein: the diameter of the air outlet (2) is 0.1-1 mm.

8. The gas splitter for the production of graphene or other elemental carbon according to claim 1, wherein: the cooling jacket (5) is of a barrel-shaped structure, a connecting ring is arranged at the opening end of the cooling jacket (5), the inner edge surface of the connecting ring is connected with the outer edge surface of the gas splitter body (4), and at least one cooling gas inlet (3) and at least one cooling gas outlet (7) are respectively arranged on the connecting ring.

9. The gas splitter for the production of graphene or other elemental carbon according to claim 1, wherein: the gas splitter body (4) is in any shape of a circle, an ellipse or a polygon.

10. The gas splitter for the production of graphene or other elemental carbon according to claim 1, wherein: the cooling jacket (5) is in any shape of circle, ellipse or polygon.