Molten salt electrolytic furnace system for producing carbon nanomaterials

Abstract

The utility model discloses a molten salt electrolytic furnace system for producing a carbon nano material, and solves the problems that an electrolysis device is poor in leakproofness, a polar plate is easy to crack, and a finished product material is insufficiently separated from the polar plate. Comprising a pole plate heating device, a molten salt electrolysis device and a scraping and natural cooling device, the pole plate heating device is composed of a heating workbench support (1), a medium-frequency electrothermal furnace (6), a pole plate hanging bracket (8), a pole plate (9) and a heat preservation cover body (4), and the pole plate heating device preheats the pole plate (9); the molten salt electrolysis device is composed of an electrolysis furnace support (18), an electrolysis furnace (19) and a crucible (20), a carbonate solution (21) is arranged in the crucible, and the lower portion of a polar plate (9) is soaked in the carbonate solution in the crucible to achieve preparation of a carbon nanomaterial; the scraping and natural cooling device consists of a storage tray bracket (24) and a storage tray (25); and the electrolysis energy consumption is reduced, and the production experiment cost is saved.

Description

Technical Field

[0001] The utility model relates to a molten salt electrolysis furnace, in particular to a molten salt electrolysis furnace system for producing carbon nanomaterials. Background Art

[0002] In the process of high-temperature molten salt electrochemical conversion of CO2 to synthesize carbon materials, factors such as electrolysis temperature, electrode potential and molten salt composition will affect the morphology, pore structure and specific surface area of ​​carbon nanomaterials, thereby affecting their performance and application; the existing carbonate molten salt electrolysis device has poor airtightness, which is easy to cause CO2 leakage and cause partial energy loss, directly leading to poor forming quality of carbon nanomaterials; in addition, the existing production process for preparing carbon nanomaterials is to directly place the molten salt electrolysis plate into a crucible carrying carbonate molten salt, pass CO2 gas into the crucible, and electrolyze to obtain Carbon nanomaterials, this production method has the following problems: since the electrode plate is at room temperature before being placed in the crucible, and the temperature of the carbonate molten salt in the crucible is as high as over 700 degrees Celsius, the molten salt electrolysis electrode plate is very likely to burst when the temperature suddenly changes, resulting in the inability to proceed with subsequent electrolysis; in addition, when carbon nanomaterials are generated by electrolysis on the electrode plate, the prior art is to take the electrode plate with the carbon nanomaterial out of the high-temperature crucible, and after the electrolytic carbon nanomaterials cool down, separate them from the electrode plate by vibration, which has the problems of low production efficiency and insufficient separation. Summary of the invention

[0003] The utility model provides a molten salt electrolysis furnace system for producing carbon nanomaterials, which solves the technical problems of poor airtightness of the electrolysis device, easy cracking of the pole plate and insufficient separation of the finished material and the pole plate.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A molten salt electrolysis furnace system for producing carbon nanomaterials comprises a plate heating device, a molten salt electrolysis device and a scraping and natural cooling device. The plate heating device is composed of a heating workbench support, a medium-frequency electric heating furnace, a plate hanger, a plate and a heat-insulating cover body, and the plate heating device preheats the plate; the molten salt electrolysis device is composed of an electrolysis furnace support, an electrolysis furnace and a crucible, a carbonate solution is arranged in the crucible, and the lower part of the plate is immersed in the carbonate solution in the crucible to achieve the preparation of carbon nanomaterials; the scraping and natural cooling device is composed of a tray support and a tray, the tray is arranged on the tray support, a heat-insulating frame plate is arranged on the top port of the tray, a plate hanger is arranged on the heat-insulating frame plate, a plate is hung on the plate hanger, a plate is hung on the plate hanger, the heat-insulating cover body is buckled on the heat-insulating frame plate, the plate hanger and the plate are buckled in the heat-insulating cover body, a carbon dioxide blowing port for scraping is arranged on the heat-insulating cover body, and a carbon dioxide blowing pipe is connected to the carbon dioxide blowing port.

[0006] An electrolytic furnace is arranged on an electrolytic furnace support, a crucible is arranged in the electrolytic furnace, a carbonate solution is arranged in the crucible, an insulation layer of refractory bricks is arranged between the outer wall of the crucible and the inner cavity of the electrolytic furnace, an upper end support plate of the electrolytic furnace is arranged on the upper port of the crucible, a central through hole of the upper end support plate is arranged on the upper end support plate of the electrolytic furnace, an insulation cover is arranged on the upper end support plate of the electrolytic furnace outside the central through hole of the upper end support plate, a pole plate hanger is arranged in the insulation cover, a pole plate is hung on the pole plate hanger, and the crucible and the insulation cover form a closed and enclosed space; carbon dioxide gas is arranged in the crucible, and the lower part of the pole plate is immersed in the carbonate solution in the crucible.

[0007] The pole plate hanger is composed of a lower support plate of the lead screw, an upper support plate of the lead screw and two vertical guide rods parallel to each other. Two vertical guide rods parallel to each other are fixedly arranged on the lower support plate of the lead screw, an upper support plate of the lead screw is arranged at the top ends of the two vertical guide rods parallel to each other, a lead screw is movably arranged between the lower support plate of the lead screw and the upper support plate of the lead screw, a lead screw motor is connected to the upper end of the lead screw, a lead screw nut lifting plate is screwed on the lead screw, a pair of guide through holes are arranged on the lead screw nut lifting plate, the lead screw nut lifting plate is movably connected to the vertical guide rod through the guide through holes, a zigzag cantilever is fixedly connected to the inner side of the lead screw nut lifting plate, and a pole plate is suspended at the inner end of the zigzag cantilever.

[0008] A cantilever support cross bar is arranged in the middle of the zigzag cantilever, a cantilever support cross bar through hole is arranged at the outer end of the cantilever support cross bar, and the outer end of the cantilever support cross bar is movably sleeved on the vertical guide rod through the cantilever support cross bar through the through hole.

[0009] A vertically upward electric heating coil is arranged on the medium frequency electric heating furnace, a base plate is arranged on the top surface of the heating workbench bracket, a central through hole is arranged on the base plate, a pole plate hanger is arranged on the base plate outside the central through hole, the electric heating coil passes through the central through hole from bottom to top and is arranged above the base plate, and the pole plate is arranged in the electric heating coil; a thermal insulation cover is buckled on the base plate, and the electric heating coil, the pole plate, the lower support plate of the screw, the upper support plate of the screw and two vertical guide rods are all buckled in the thermal insulation cover.

[0010] The utility model realizes the semi-automatic production of carbon nanomaterials through the whole system consisting of a preheating device, a molten salt electrolysis device, and a scraper and natural cooling device in sequence, improves the production efficiency, and ensures the safety of production experiments; the equipment is relatively sealed, the electrolysis of molten carbonate decomposes CO2 fully, reduces the energy consumption of electrolysis, and saves the cost of production experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the molten salt electrolysis device of the utility model;

[0013] Figure 3 It is a structural schematic diagram of the plate heating device of the utility model;

[0014] Figure 4 It is a structural schematic diagram of the pole plate hanger 8 of the utility model;

[0015] Figure 5 It is a structural schematic diagram of the medium frequency electric heating furnace 6 of the utility model. DETAILED DESCRIPTION

[0016] The utility model is described in detail below with reference to the accompanying drawings:

[0017] A molten salt electrolysis furnace system for producing carbon nanomaterials, comprising a plate heating device, a molten salt electrolysis device, and a scraper and natural cooling device. The production of carbon nanomaterials is carried out in the above three areas in sequence. The plate heating device is composed of a heating workbench support 1, a medium-frequency electric heating furnace 6, a plate hanger 8, a plate 9, and a heat-insulating cover 4. The plate heating device preheats the plate 9; the molten salt electrolysis device is composed of an electrolysis furnace support 18, an electrolysis furnace 19, and a crucible 20. A carbonate solution 21 is arranged in the crucible 20, and the lower part of the plate 9 is immersed in the carbonate solution in the crucible 20. 21, the preparation of carbon nanomaterials is realized; the scraping and natural cooling device is composed of a placing plate bracket 24 and a placing plate 25, the placing plate 25 is arranged on the placing plate bracket 24, an insulating frame 27 is arranged on the top end of the placing plate 25, a pole plate hanger 8 is arranged on the insulating frame 27, a pole plate 9 is hung on the pole plate hanger 8, a thermal insulation cover 4 is buckled on the insulating frame 27, the pole plate hanger 8 and the pole plate 9 are buckled in the thermal insulation cover 4, a carbon dioxide blowing port 26 for scraping is arranged on the thermal insulation cover 4, and a carbon dioxide blowing pipe is connected to the carbon dioxide blowing port 26.

[0018] An electrolytic furnace 19 is arranged on an electrolytic furnace support 18, a crucible 20 is arranged in the electrolytic furnace 19, a carbonate solution 21 is arranged in the crucible 20, an insulation layer refractory brick 23 is arranged between the outer wall of the crucible 20 and the inner cavity of the electrolytic furnace 19, an electrolytic furnace upper support plate 28 is arranged on the upper port of the crucible 20, an upper support plate center through hole is arranged on the electrolytic furnace upper support plate 28, an insulation cover 4 is arranged on the electrolytic furnace upper support plate 28 outside the upper support plate center through hole, a pole plate hanger 8 is arranged in the insulation cover 4, a pole plate 9 is hung on the pole plate hanger 8, the crucible 20 and the insulation cover 4 form a closed and enclosed space, which not only maintains the airtightness of carbon dioxide, but also has a heat preservation effect; carbon dioxide gas 22 is arranged in the crucible 20, and the lower part of the pole plate 9 is immersed in the carbonate solution 21 in the crucible 20.

[0019] The molten salt electrolysis plate heating device comprises a heating workbench support 1, an intermediate frequency electric heating furnace 6, a plate 9 and a heat preservation cover 4, a vertically upward electric heating coil 7 is arranged on the intermediate frequency electric heating furnace 6, a base plate 2 is arranged on the top surface of the heating workbench support 1, a central through hole 3 is arranged on the base plate 2, and a plate hanger 8 is arranged on the base plate 2 outside the central through hole 3, and the plate hanger 8 is composed of a lower support plate 10 of a lead screw, an upper support plate 13 of a lead screw and two vertical guide rods 12 parallel to each other, two vertical guide rods 12 parallel to each other are fixedly arranged on the lower support plate 10 of the lead screw, and two vertical guide rods 12 parallel to each other are arranged at the top ends of the two vertical guide rods 12 parallel to each other. A lead screw upper support plate 13, a lead screw 11 is movably arranged between the lead screw lower support plate 10 and the lead screw upper support plate 13, a lead screw motor 15 is connected to the upper end of the lead screw 11, a lead screw nut lifting plate 14 is screwed on the lead screw 11, a pair of guide through holes are arranged on the lead screw nut lifting plate 14, the lead screw nut lifting plate 14 is movably connected to the vertical guide rod 12 through the guide through holes, a zigzag cantilever 16 is fixedly connected to the inner side of the lead screw nut lifting plate 14, and a pole plate 9 is suspended at the inner side end of the zigzag cantilever 16; the zigzag cantilever 16 and the suspended pole plate are lifted and lowered by the forward or reverse rotation of the lead screw motor 15.

[0020] A cantilever support cross bar 17 is arranged in the middle of the zigzag cantilever 16, and a cantilever support cross bar through hole is arranged at the outer end of the cantilever support cross bar 17. The outer end of the cantilever support cross bar 17 is movably connected to the vertical guide rod 12 through the cantilever support cross bar through hole; the cantilever support cross bar 17 plays a role in stabilizing the zigzag cantilever 16.

[0021] A vertically upward electric heating coil 7 is arranged on the medium frequency electric heating furnace 6, a base plate 2 is arranged on the top surface of the heating workbench bracket 1, a central through hole 3 is arranged on the base plate 2, and a pole plate hanger 8 is arranged on the base plate 2 outside the central through hole 3. The electric heating coil 7 passes through the central through hole 3 from bottom to top and is arranged above the base plate 2, and the pole plate 9 is arranged in the electric heating coil 7; a thermal insulation cover 4 is buckled on the base plate 2, and the electric heating coil 7, the pole plate 9, the lower support plate 10 of the screw, the upper support plate 13 of the screw and the two vertical guide rods 12 are all buckled in the thermal insulation cover 4.

[0022] The equipment of the utility model is mainly divided into three areas, namely, the plate heating device area, the molten salt electrolysis device area and the scraper and natural cooling device area; the plate heating device area heats the plate 9 through the electric heating coil 7 on the medium frequency electric heating furnace 6. During the heating process, the plate hanger 8 and the plate 9 are buckled by the heat preservation cover 4, so as to create a closed heating space, so that the plate 9 can be fully heated. When the preheating is completed, the medium frequency electric heating furnace 6 is lowered by starting the lifting bracket 5, and the electric heating coil 7 is lowered to the bottom of the base plate 2, and the heat preservation cover 4, the plate hanger 8 and the plate 9 are moved to the upper end support plate 28 of the electrolysis furnace in the molten salt electrolysis device by lifting; the molten salt electrolysis device heats the solid molten salt in the crucible to melt it into a liquid state, and the plate 9 preheated in the preheating zone is grabbed by the manipulator to the electrolysis experimental area, and the screw motor 15 is started to make the screw nut lifting plate 14 move down The lower end of the electrode plate 9 is immersed in the liquid molten salt in the crucible, and the liquid carbon dioxide is vaporized by the vaporizer and then introduced into the inner cavity of the electrolytic furnace. The carbon dioxide in the electrolytic furnace is electrolyzed in the molten salt to generate carbon nanotube products. The products at this time contain carbon nanotubes and molten salt. Then, the electrode plate 9 is lifted by the reverse rotation of the screw motor 15, and the insulation cover body 4, the electrode plate hanger 8 and the electrode plate 9 are moved to the insulation frame plate 27 on the scraper and natural cooling device area through the lifting equipment. The carbon dioxide blowing pipe is connected to the carbon dioxide blowing port 26, and the carbon nanotubes and molten salt on the electrode plate 9 are blown into the storage tray 25 with CO2 gas. In this process, the temperature of the electrode plate 9 is maintained due to the covering of the insulation cover body 4, so that the generated carbon nanotubes can fully enter the storage tray 25. After that, the insulation cover body 4, the electrode plate hanger 8 and the electrode plate 9 are moved to the electrode plate heating device area for the next cycle of production.

Claims

1. A molten salt electrolysis furnace system for producing carbon nanomaterials, comprising a plate heating device, a molten salt electrolysis device, and a scraping and natural cooling device, characterized in that: The plate heating device is composed of a heating workbench support (1), a medium-frequency electric heating furnace (6), a plate hanger (8), a plate (9) and a heat-insulating cover (4), and the plate heating device preheats the plate (9); the molten salt electrolysis device is composed of an electrolysis furnace support (18), an electrolysis furnace (19) and a crucible (20), a carbonate solution (21) is arranged in the crucible (20), and the lower part of the plate (9) is immersed in the carbonate solution (21) in the crucible (20), so as to prepare the carbon nanomaterial; the scraping and natural cooling device is composed of a tray support (24) and a tray support (25). The storage tray (25) is composed of a storage tray (25), the storage tray (25) is arranged on a storage tray bracket (24), a heat insulation frame (27) is arranged on the top end of the storage tray (25), a plate hanger (8) is arranged on the heat insulation frame (27), a plate (9) is hung on the plate hanger (8), a heat insulation cover (4) is buckled on the heat insulation frame (27), the plate hanger (8) and the plate (9) are buckled in the heat insulation cover (4), a carbon dioxide blowing port (26) for scraping material is arranged on the heat insulation cover (4), and a carbon dioxide blowing pipe is connected to the carbon dioxide blowing port (26).

2. A molten salt electrolysis furnace system for producing carbon nanomaterials according to claim 1, characterized in that: An electrolytic furnace (19) is arranged on an electrolytic furnace support (18), a crucible (20) is arranged in the electrolytic furnace (19), a carbonate solution (21) is arranged in the crucible (20), a heat-insulating refractory brick (23) is arranged between the outer wall of the crucible (20) and the inner cavity of the electrolytic furnace (19), an electrolytic furnace upper end support plate (28) is arranged on the upper end port of the crucible (20), and a central through hole of the upper end support plate is arranged on the electrolytic furnace upper end support plate (28), A heat-insulating cover (4) is arranged on the upper support plate (28) of the electrolytic furnace outside the central through hole of the upper support plate, a pole plate hanger (8) is arranged in the heat-insulating cover (4), a pole plate (9) is hung on the pole plate hanger (8), and the crucible (20) and the heat-insulating cover (4) form a closed and sealed space; carbon dioxide gas (22) is arranged in the crucible (20), and the lower part of the pole plate (9) is immersed in a carbonate solution (21) in the crucible (20).

3. A molten salt electrolysis furnace system for producing carbon nanomaterials according to claim 1, characterized in that: The pole plate hanger (8) is composed of a screw lower support plate (10), a screw upper support plate (13) and two vertical guide rods (12) parallel to each other. The two vertical guide rods (12) parallel to each other are fixedly arranged on the screw lower support plate (10), the screw upper support plate (13) is arranged at the top of the two vertical guide rods (12) parallel to each other, and a screw (11) is movably arranged between the screw lower support plate (10) and the screw upper support plate (13). A lead screw motor (15) is connected to the upper end of the lead screw (11), a lead screw nut lifting plate (14) is screwed to the lead screw (11), a pair of guide through holes are provided on the lead screw nut lifting plate (14), the lead screw nut lifting plate (14) is movably connected to the vertical guide rod (12) through the guide through holes, a zigzag cantilever (16) is fixedly connected to the inner side of the lead screw nut lifting plate (14), and a pole plate (9) is suspended at the inner side end of the zigzag cantilever (16).

4. A molten salt electrolysis furnace system for producing carbon nanomaterials according to claim 3, characterized in that: A cantilever support cross bar (17) is arranged in the middle of the zigzag cantilever (16), a cantilever support cross bar through hole is arranged at the outer end of the cantilever support cross bar (17), and the outer end of the cantilever support cross bar (17) is movably sleeved on the vertical guide rod (12) through the cantilever support cross bar through hole.

5. The molten salt electrolysis furnace system for producing carbon nanomaterials according to claim 1, characterized in that: A vertically upward electric heating coil (7) is arranged on the medium frequency electric heating furnace (6); a base plate (2) is arranged on the top surface of the heating workbench bracket (1); a central through hole (3) is arranged on the base plate (2); a pole plate hanger (8) is arranged on the base plate (2) outside the central through hole (3); the electric heating coil (7) passes through the central through hole (3) from bottom to top and is arranged above the base plate (2); the pole plate (9) is arranged in the electric heating coil (7); a heat preservation cover (4) is buckled on the base plate (2); the electric heating coil (7), the pole plate (9), the lower support plate (10) of the lead screw, the upper support plate (13) of the lead screw and two vertical guide rods (12) are all buckled in the heat preservation cover (4).

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