A method and device for preparing a graphitized composite porous carbon skeleton

Abstract

The present invention discloses a method and device for preparing a graphitized composite porous carbon skeleton, comprising a base, a lower template fixed on the top of the base, a mold fixed on the top of the lower template, and a mounting platform fixed on the top of the lower template. The present invention relates to the field of material preparation technology. The method and device for preparing a graphitized composite porous carbon skeleton, through the arrangement of a quantitative feeding and mixing circulation mechanism and a driving component, achieves quantitative feeding of a small amount of material while mixing the mixture with a mixing blade, and such a cycle effectively avoids the phenomenon that a large amount of material is put into the mixing equipment at one time in the traditional mixing method, the initial distribution of the material is relatively dispersed, and it is difficult to quickly achieve uniform mixing. At the same time, after being fully mixed before hot pressing, the fluidity of the mixture is effectively improved. After a small amount of multiple mixing operations, the probability of forming defects such as material shortage and bubbles in the precursor is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of material preparation, and in particular to a method and a device for preparing a graphitized composite porous carbon skeleton. Background Art

[0002] Porous carbon materials, due to their unique porous structure, high specific surface area, and good chemical stability, have shown great application potential in energy storage, catalysis, adsorption and separation, and other fields. The graphitized composite porous carbon framework combines the high conductivity of graphite with the structural advantages of porous carbon materials, which can further enhance the performance of the material in related applications.

[0003] A mixture is obtained by mixing biomass raw materials with a pore-forming agent solution, and then the mixture is transferred to a mold. A precursor with a specific shape is made by hot pressing. The precursor is a key intermediate product in the process of preparing a graphitized composite porous carbon skeleton and plays an important role in connecting the previous and the next. Since the mixture in the mold has poor fluidity before hot pressing, molding defects such as material shortage and bubbles are prone to occur after hot pressing. In addition, in the existing hot pressing molding process, due to the lack of effective scraping measures, the surface of the mixture in the mold is uneven, resulting in the inability to uniformly apply pressure to the material during hot pressing. The unevenness of the material causes the local pressure to be too large or too small, which in turn affects the compaction degree of the precursor. The uneven pressure will also cause differences in density in various parts of the precursor, increase the risk of internal defects, and seriously affect the reaction uniformity of subsequent carbonization, activation and graphitization treatment. To this end, we propose a preparation method and preparation device for a graphitized composite porous carbon skeleton to solve the above problems. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method and apparatus for preparing a graphitized composite porous carbon skeleton, which solves the problems raised in the background art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a preparation device for a graphitized composite porous carbon skeleton, comprising a base, a lower template fixed on the top of the base, a mold fixed on the top of the lower template, a mounting platform fixed on the top of the lower template, a quantitative feeding and mixing circulation mechanism provided on the top of the mounting platform, the quantitative feeding and mixing circulation mechanism being used to quantitatively feed the mixture into the mold and then mix and circulate the process;

[0006] The transmission mechanism that this invention relates to is that this invention relates to a gear that is fixed on the top of this gear and is meshed with the gear that is fixed on the top of this gear.

[0007] Preferably, the driving assembly includes a vertical block fixed on the top of the slide seat, one side of the vertical block is rotatably connected to a cam via a rotating shaft, two cross bars are fixed on one side of the vertical block, a vertical plate is fixed between one end of the two cross bars, a slider is slidably connected between the outer surfaces of the two cross bars, a spring is fixed between one side of the slider and one side of the vertical plate, a connecting plate is fixed on one side of the slider, the side surface of the cam is in contact and extruded with one side of the connecting plate, a mounting plate is fixed on one side of the slider, and a connecting column is fixed on one side of the mounting plate.

[0008] Preferably, the connecting column slides in the slide groove, a pulley 1 is fixed on the rotating shaft of the cam, a pulley 2 is fixed on the rotating shaft of the bevel gear 1, and the pulley 1 and the pulley 2 are connected by a belt transmission. An L-shaped seat is fixed on one side of the slide seat, and a motor is fixed on one side of the L-shaped seat, and the motor drives the rotating shaft of the bevel gear 1 to rotate.

[0009] Preferably, the slide is also provided with an automatic scraping component for scraping the mixture in the mold, the automatic scraping component includes a disc fixed to one end of the cam shaft, a boss is fixed on one side of the disc, a folding rod is fixed on one side of the slide, one side of the folding rod is rotatably connected to a rocker arm through a pin shaft, a guide groove is opened through the rocker arm, the boss slides in the guide groove, a missing gear is fixed on one end of the rocker arm, and a horizontal plate is fixed on one side of the slide.

[0010] Preferably, a guide rail is provided on the horizontal plate, a rack is slidably connected in the guide rail, the missing gear is engaged with the rack, a bent rod is fixed on one side of the rack, a square plate is fixed on one end of the bent rod, an electric telescopic rod 2 is fixed on the top of the square plate, and a scraper is fixed on the output end of the electric telescopic rod 2.

[0011] Preferably, the scraper is provided with a removal unit, which is used to remove a small amount of material adsorbed by the scraper due to electrostatic action when scraping. The removal unit includes a connecting rod fixed on one side of the scraper, one end of the connecting rod is rotatably connected to a side plate, and a U-shaped clamp is provided on one side of the side plate. A spring 2 is fixed between one side of the U-shaped clamp and one side of the side plate, and an L-shaped limit plate is rotatably connected to the U-shaped clamp through a pin shaft, and one side of the L-shaped limit plate is in contact and extruded with one side of the side plate.

[0012] Preferably, four supporting columns are fixed to the top of the lower template, an upper template is fixed between the top ends of the four supporting columns, a cylinder 1 is fixed to the top of the upper template, a hot pressing plate is fixed to the output end of the cylinder 1, a vertical plate is fixed to the top of the slide, a cylinder 2 is fixed to one side of the vertical plate, and the output end of the cylinder 2 is fixed to one side of the slide.

[0013] The present invention also discloses a method for preparing a graphitized composite porous carbon skeleton, which specifically comprises the following steps:

[0014] Step 1: Add the crushed biomass raw material to the pore-forming agent solution, stir and mix thoroughly, so that the pore-forming agent is evenly adsorbed on the surface of the biomass raw material. Then add the catalyst solution to form a mixture, add the mixture to the hopper, start cylinder 2, cylinder 2 drives the slide to move to the right, push it to the top of the mold, start the motor, the motor drives the cam to rotate, and when the cam rotates, it drives the slider and the mounting plate to move back and forth left and right, and the mounting plate drives the Z-shaped rotating arm to rotate 90 degrees clockwise and counterclockwise. When the material box is rotated to the top, the material box squeezes the touch switch, and the touch switch opens the electric door in the hopper, and the mixture falls into the material box. When the material box rotates to a horizontal state, the mixture is discharged into the mold through the discharge pipe, and at the same time, the electric telescopic rod 1 is started, and the electric telescopic rod 1 drives the mixing blade to stir the mixture evenly to improve the fluidity of the mixture;

[0015] Step 2: When the cam rotates, it drives the disc to rotate synchronously. The disc drives the missing gear to swing around the pin shaft, and then the missing gear drives the rack to reciprocate left and right. The electric telescopic rod 2 is started, and the electric telescopic rod 2 drives the scraper to move downward. As the scraper moves back and forth left and right, the mixture in the mold is scraped flat.

[0016] Step 3: Turn and open the L-shaped limit plate. The compressed spring 2 will reset and drive the U-shaped clamp to move. The U-shaped clamp will quickly remove the mixture adhering to the scraper surface. After the mixture is mixed and leveled, start the cylinder 1. The cylinder 1 will drive the hot pressing plate down into the mold to hot-press the mixture and finally form a precursor.

[0017] Beneficial effects

[0018] The present invention provides a method and apparatus for preparing a graphitized composite porous carbon skeleton. Compared with the prior art, the present invention has the following advantages:

[0019] (1) By setting up a quantitative feeding and mixing circulation mechanism and a driving component, it is possible to achieve quantitative feeding of a small amount of material while using the mixing blade to mix the mixture. This cycle effectively avoids the traditional mixing method of putting a large amount of material into the mixing equipment at one time, resulting in a relatively dispersed initial distribution of the material and difficulty in quickly achieving uniform mixing. At the same time, after being fully mixed before hot pressing, the fluidity of the mixture is effectively improved. After a small amount of multiple mixing operations, the probability of forming defects such as material shortage and bubbles in the precursor is effectively reduced.

[0020] (2) Through the setting of the automatic scraping component, linked with the quantitative feeding and mixing circulation mechanism, after the mixture is mixed, the mixture can be scraped flat in the mold, so that the pressure can be evenly applied to the material during hot pressing, making the density of the precursor consistent everywhere, and reducing the risk of internal defects.

[0021] (3) By removing the setting of the unit and rotating the L-shaped limit plate to open it, the compressed spring 2 quickly drives the U-shaped clamp to slide on the scraper surface, and then the U-shaped clamp scrapes off a small amount of mixture adsorbed on the scraper due to static electricity, so that the scraper remains clean and the flatness of the scraper is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the external structure of the present invention;

[0023] Figure 2 The local structure of the present invention is three-dimensional Figure 1 ;

[0024] Figure 3 The local structure of the present invention is three-dimensional Figure 2 ;

[0025] Figure 4 The quantitative feeding and mixing circulation mechanism and driving component of the present invention are three-dimensional Figure 1 ;

[0026] Figure 5 For the present invention Figure 4 A partial enlarged view of point A in the middle;

[0027] Figure 6 The quantitative feeding and mixing circulation mechanism and driving component of the present invention are three-dimensional Figure 2 ;

[0028] Figure 7 A three-dimensional diagram of the automatic scraping assembly of the present invention;

[0029] Figure 8 It is a three-dimensional diagram of the removal unit of the present invention.

[0030] In the figure: 1. Base; 2. Lower template; 3. Mold; 4. Mounting table; 5. Quantitative unloading and mixing circulation mechanism; 6. Driving assembly; 7. Automatic scraping assembly; 8. Removal unit; 9. Support column; 10. Upper template; 11. Cylinder 1; 12. Hot pressing plate; 13. Vertical plate; 14. Cylinder 2; 51. Slide; 52. Fixed seat; 53. Bevel gear 1; 54. Z-shaped rotating arm; 55. Slide; 56. Rotating rod; 57. Bevel gear 2; 58. Electric telescopic rod 1; 59. Mixing blade; 510. Material box; 511. Discharge pipe; 512. U-shaped plate; 513. Hopper; 514. L-shaped plate; 515. Touch switch; 61. : Vertical block; 62. Cam; 63. Crossbar; 64. Vertical plate; 65. Slider; 66. Spring 1; 67. Connecting plate; 68. Mounting plate; 69. Connecting column; 610. Pulley 1; 611. Pulley 2; 612. Belt; 613. L-shaped seat; 614. Motor; 71. Disc; 72. Boss; 73. Folding rod; 74. Rocker arm; 75. Guide groove; 76. Missing gear; 77. Crossbar; 78. Guide rail; 79. Rack; 710. Bending rod; 711. Square plate; 712. Electric telescopic rod 2; 713. Scraper; 81. Connecting rod; 82. Side plate; 83. U-shaped clamp; 84. Spring 2; 85. L-shaped limit plate. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The present invention provides three technical solutions, including the following embodiments:

[0033] Example 1

[0034] See also Figures 1-6A device for preparing a graphitized composite porous carbon skeleton includes a base 1, a lower template 2 is fixed on the top of the base 1, a mold 3 is fixed on the top of the lower template 2, a mixture is poured into the mold 3, a cylinder 11 is started, the cylinder 11 drives the hot pressing plate 12 to press down, the hot pressing plate 12 starts heating to heat and shape the mixture, and finally the mixture forms a precursor, four support columns 9 are fixed on the top of the lower template 2, an upper template 10 is fixed between the tops of the four support columns 9, a cylinder 11 is fixed on the top of the upper template 10, and the cylinder 11 is controlled by an external switch, and Electrically connected to the external power supply, the output end of the cylinder 11 is fixed with a hot pressing plate 12, which is made of a high-temperature resistant and high-strength metal material, such as stainless steel or alloy steel. During the hot pressing process, the hot pressing plate 12 is heated by an internal heating element, such as a resistance wire, a heating rod, etc., to transfer heat to the material to meet the temperature conditions required for hot pressing. A mounting platform 4 is fixed on the top of the lower template 2, and a quantitative feeding and mixing circulation mechanism 5 is provided on the top of the mounting platform 4. The quantitative feeding and mixing circulation mechanism 5 is used to quantitatively feed the mixture into the mold 3 and then mix and circulate this process;

[0035] The quantitative feeding and mixing circulation mechanism 5 includes a slide 51 slidably connected to the top of the mounting platform 4, a fixed seat 52 is fixed on the top of the slide 51, and one side of the fixed seat 52 is rotatably connected to a bevel gear 1 53 through a rotating shaft, and a Z-shaped rotating arm 54 is rotatably connected to the rotating shaft of the bevel gear 1 53. A slide groove 55 is provided on the Z-shaped rotating arm 54, and a rotating rod 56 is rotatably connected inside the Z-shaped rotating arm 54. A bevel gear 2 57 is fixed on the top of the rotating rod 56, and the bevel gear 1 53 is meshed with the bevel gear 2 57. The Z-shaped rotating arm 54 is controlled by the driving component 6 to rotate clockwise and counterclockwise by 90 degrees. An electric telescopic rod 1 58 is fixed to the bottom end of the rotating rod 56. The electric telescopic rod 1 58 is controlled by an external switch and is electrically connected to an external power supply. A mixing leaf 59 is fixed to the output end of the electric telescopic rod 1 58. The setting of the mixing leaf 59 can The mixture in the tool 3 is mixed, and stirring can promote the uniform mixing of the various components in the mixture. When the various components are evenly distributed, the overall properties of the mixture tend to be consistent, avoiding uneven fluidity due to differences in local components. A material box 510 is fixed on one side of the Z-shaped rotating arm 54, and one side of the material box 510 is open. The bottom of the material box 510 is connected to a discharge pipe 511, and a U-shaped plate 512 is fixed on one side of the slide 51. A hopper 513 is fixed on one side of the U-shaped plate 512. An electric door is installed in the hopper 513, and the electric door is controlled by a touch switch 515 and an external main switch, and is electrically connected to an external power supply. When the electric door is opened, the mixture in the hopper 513 is discharged, and when the electric door is closed, the discharge can be stopped. An L-shaped plate 514 is fixed on one side of the hopper 513, and a touch switch 515 is installed on one side of the L-shaped plate 514.

[0036] The driving assembly 6 includes a vertical block 61 fixed to the top of the slide 51, and one side of the vertical block 61 is rotatably connected to a cam 62 through a rotating shaft. Two cross bars 63 are fixed to one side of the vertical block 61, and a vertical plate 64 is fixed between one end of the two cross bars 63. A slider 65 is slidably connected between the outer surfaces of the two cross bars 63, and a spring 66 is fixed between one side of the slider 65 and one side of the vertical plate 64. The setting of the spring 66 allows the slider 65 to reset to the left. A connecting plate 67 is fixed to one side of the slider 65, and the side surface of the cam 62 contacts and squeezes one side of the connecting plate 67. A mounting plate 68 is fixed to one side of the slider 65, and a connecting column 69 is fixed to one side of the mounting plate 68.

[0037] The connecting column 69 slides in the slide groove 55. A pulley 1 610 is fixed on the rotating shaft of the cam 62, and a pulley 2 611 is fixed on the rotating shaft of the bevel gear 1 53. The pulley 1 610 and the pulley 2 611 are connected by a belt 612. An L-shaped seat 613 is fixed on one side of the slide 51, and a motor 614 is fixed on one side of the L-shaped seat 613. The motor 614 is controlled by an external switch and is electrically connected to an external power supply. The motor 614 drives the rotating shaft of the bevel gear 1 53 to rotate.

[0038] By setting up the quantitative feeding and mixing circulation mechanism 5 and the driving component 6, it is possible to achieve quantitative feeding of small amounts of materials while mixing the mixture with the mixing blades 59, and to perform such a cycle, thereby effectively avoiding the phenomenon that a large amount of materials are put into the mixing equipment at one time in the traditional mixing method, the initial distribution of the materials is relatively dispersed, and it is difficult to quickly achieve uniform mixing. At the same time, after being fully mixed before hot pressing, the fluidity of the mixture is effectively improved. After a small amount and multiple mixing operations, the probability of forming defects such as material shortage and bubbles in the precursor is effectively reduced.

[0039] A vertical plate 13 is fixed to the top of the slide 51, and a cylinder 2 14 is fixed to one side of the vertical plate 13. The cylinder 2 14 is controlled by an external switch and is electrically connected to an external power supply. The output end of the cylinder 2 14 is fixed to one side of the slide 51. The setting of the cylinder 2 14 can drive the slide 51 to move and push the quantitative feeding and mixing circulation mechanism 5 to the top of the mold 3 to perform quantitative feeding and mixing operations. When not in use, the cylinder 2 14 is turned off without affecting the hot pressing operation.

[0040] Example 2

[0041] Based on Example 1, see Figure 7-Figure 8As shown, the slide 51 is also provided with an automatic leveling component 7 for leveling the mixture in the mold 3. The automatic leveling component 7 includes a disc 71 fixed to one end of the cam 62 shaft, a boss 72 is fixed to one side of the disc 71, a folding rod 73 is fixed to one side of the slide 51, and a rocker arm 74 is connected to one side of the folding rod 73 by a pin shaft. A guide groove 75 is formed through the rocker arm 74, and the boss 72 slides in the guide groove 75. A gear 76 is fixed to one end of the rocker arm 74, and a horizontal plate 77 is fixed to one side of the slide 51.

[0042] A guide rail 78 is provided on the horizontal plate 77, and a rack 79 is slidably connected in the guide rail 78. The missing gear 76 is engaged with the rack 79. A bent rod 710 is fixed to one side of the rack 79, and a square plate 711 is fixed to one end of the bent rod 710. An electric telescopic rod 2 712 is fixed to the top of the square plate 711. The electric telescopic rod 2 712 is controlled by an external switch and is electrically connected to an external power supply. A scraper 713 is fixed to the output end of the electric telescopic rod 2 712. The setting of the scraper 713 can scrape the mixture in the mold 3 flat and improve the flatness.

[0043] By setting up the automatic scraping component 7 and linking it with the quantitative feeding and mixing circulation mechanism 5, after the mixture is mixed, the mixture can be scraped flat in the mold 3, so that the pressure can act evenly on the material during hot pressing, making the density of the precursor consistent everywhere, and reducing the risk of internal defects.

[0044] The scraper 713 is provided with a removal unit 8, which is used to remove a small amount of material adsorbed by the scraper 713 due to electrostatic action when scraping. The removal unit 8 includes a connecting rod 81 fixed to one side of the scraper 713, and one end of the connecting rod 81 is rotatably connected to a side plate 82. The rotational friction coefficient between the side plate 82 and the connecting rod 81 is large, so that the side plate 82 can be rotated to any angle and stay still. When the removal unit 8 is not in use, the side plate 82 can be flipped up and retracted. When it is needed, the side plate 82 and the U-shaped clamp are connected. 83 is lowered, and a U-shaped clamp 83 is provided on one side of the side plate 82. The inner surface of the U-shaped clamp 83 is slidably connected to the outer surface of the scraper 713. A spring 2 84 is fixed between one side of the U-shaped clamp 83 and one side of the side plate 82. The spring 2 84 is made of an alloy material with a high elastic modulus and good elastic recovery performance. This material can generate a large elastic force under a small deformation. An L-shaped limit plate 85 is rotatably connected to the U-shaped clamp 83 through a pin shaft. One side of the L-shaped limit plate 85 contacts and squeezes one side of the side plate 82.

[0045] By removing the setting of unit 8 and rotating to open the L-shaped limit plate 85, the compressed spring 2 84 quickly drives the U-shaped clip 83 to slide on the surface of the scraper 713, and then the U-shaped clip 83 scrapes off a small amount of mixture adsorbed on the scraper 713 due to static electricity, so that the scraper 713 remains clean and the flatness during scraping is ensured.

[0046] Example 3

[0047] Based on Example 2, see Figures 1-8 As shown, the present invention also discloses a method for preparing a graphitized composite porous carbon skeleton, which specifically includes the following steps:

[0048] Step 1: Select biomass raw materials with rich carbon sources, such as lignin, cellulose, chitosan, etc., and crush them into a certain particle size range, such as 50-100 mesh, for subsequent processing. At the same time, prepare an appropriate amount of pore-forming agents, such as ammonium bicarbonate, sodium chloride, etc., and catalysts, such as transition metal salts (ferric chloride, nickel nitrate, etc.), and dissolve the pore-forming agents and catalysts in deionized water respectively to prepare a solution of a certain concentration. Add the crushed biomass raw materials to the pore-forming agent solution, stir and mix thoroughly to make the pore-forming agent evenly adsorbed on the surface of the biomass raw materials, and then add the catalyst solution to form a mixture. Add the mixture to the hopper 513, start the cylinder 2 14, and the cylinder 2 14 drives the slide The seat 51 moves to the right and is pushed to the top of the mold 3, and the motor 614 is started. The motor 614 drives the cam 62 to rotate. When the cam 62 rotates, it drives the slider 65 and the mounting plate 68 to move back and forth left and right. The mounting plate 68 drives the Z-shaped rotating arm 54 to rotate 90 degrees clockwise and counterclockwise. When the material box 510 rotates to the top, the material box 510 squeezes the touch switch 515, and the touch switch 515 opens the electric door in the hopper 513, and the mixture falls into the material box 510. When the material box 510 rotates to a horizontal state, the mixture is discharged into the mold 3 through the discharge pipe 511. At the same time, the electric telescopic rod 58 is started, and the electric telescopic rod 58 drives the mixing blade 59 to stir the mixture evenly to improve the fluidity of the mixture.

[0049] Step 2: When the cam 62 rotates, it synchronously drives the disc 71 to rotate. The disc 71 drives the missing gear 76 to swing around the pin, and then the missing gear 76 drives the rack 79 to reciprocate left and right, starting the electric telescopic rod 712. The electric telescopic rod 712 drives the scraper 713 to move downward. As the scraper 713 reciprocates left and right, it scrapes the mixture in the mold 3.

[0050] Step 3: Turn and open the L-shaped limit plate 85. The compressed spring 2 84 is reset, driving the U-shaped clamp 83 to move. The U-shaped clamp 83 quickly removes the mixture adhering to the surface of the scraper 713. After the mixture is mixed and smoothed, start the cylinder 11. The cylinder 11 drives the hot pressing plate 12 to move down into the mold 3 to hot press the mixture. The hot pressing molding conditions are temperature 150-200℃, pressure 5-10MPa, and holding time 10-20 minutes. Finally, a precursor is formed, and the formed precursor is placed in a tubular furnace and carbonized under the protection of an inert gas (such as nitrogen or argon). The heating rate is set to 5-10°C / min, and the temperature is first raised to 300-400°C and kept at this temperature for 1-2 hours to remove moisture and volatile impurities in the precursor. The temperature is then continued to be raised to 700-900°C and kept at this temperature for 2-4 hours to initially carbonize the biomass raw material and form a carbonized product with a certain pore structure.

[0051] Step 4: Take out the carbonized product and soak it in an activator solution (such as potassium hydroxide or sodium hydroxide solution) for a certain period of time, for example, 1-3 hours, to allow the activator to fully penetrate the pores of the carbonized product. The soaked carbonized product is then placed back into a tube furnace and activated under inert gas protection at an activation temperature of 800-1000°C, a heating rate of 5-10°C / min, and a holding time of 1-2 hours. During the activation process, the activator reacts chemically with the carbonized product, further expanding and enriching the pore structure and increasing the specific surface area of the material.

[0052] Step 5. Transfer the activated product to a high-temperature graphitization furnace and carry out graphitization treatment under the protection of inert gas. The graphitization temperature is 2000-2500℃, the heating rate is 10-20℃ / min, and the holding time is 0.5-1 hour. Through high-temperature treatment, the carbon atoms in the carbonized product are rearranged to form a graphitized structure, thereby improving the conductivity and chemical stability of the material. After the graphitization treatment is completed, wait for the product to cool to room temperature, take it out and wash it repeatedly with deionized water to remove the activator and impurities remaining on the surface. The washed product is then dried at 80-100℃ for 2-4 hours to obtain the final graphitized composite porous carbon skeleton material.

[0053] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0054] The above embodiments of the invention are described in detail, but the contents are only preferred embodiments of the invention and should not be considered to limit the scope of the invention. All equivalent changes and improvements made within the scope of the invention should still fall within the scope of the invention.

Claims

1. A device for preparing a graphitized composite porous carbon skeleton, comprising a base (1), characterized in that: A quantitative feeding and mixing circulation mechanism (5) is provided above the base (1), and the quantitative feeding and mixing circulation mechanism (5) is used to feed the mixture in a quantitative manner, mix it, and circulate the process; The quantitative feeding and mixing circulation mechanism (5) comprises a slide (51) arranged above the base (1); a U-shaped plate (512) is fixed on one side of the slide (51); a hopper (513) is fixed on one side of the U-shaped plate (512); an L-shaped plate (514) is fixed on one side of the hopper (513); a touch switch (515) is installed on one side of the L-shaped plate (514); a fixed seat (52) is fixed on the top of the slide (51); and one side of the fixed seat (52) is rotated by The shaft is rotatably connected to a bevel gear 1 (53), the shaft of the bevel gear 1 (53) is rotatably connected to a Z-shaped rotating arm (54), a sliding groove (55) is provided on the Z-shaped rotating arm (54), a rotating rod (56) is rotatably connected to the Z-shaped rotating arm (54), the top of the rotating rod (56) is fixed with a bevel gear 2 (57), the bevel gear 1 (53) is meshed with the bevel gear 2 (57), and the Z-shaped rotating arm (54) is controlled by the driving component (6) to perform a 90-degree clockwise and counterclockwise cyclic rotation; The driving assembly (6) includes a vertical block (61) fixed on the top of the slide (51), one side of the vertical block (61) is connected to a cam (62) through a rotating shaft, two cross bars (63) are fixed to one side of the vertical block (61), a vertical plate (64) is fixed between one end of the two cross bars (63), a slider (65) is slidably connected between the outer surfaces of the two cross bars (63), a spring (66) is fixed between one side of the slider (65) and one side of the vertical plate (64), a connecting plate (67) is fixed to one side of the slider (65), the side surface of the cam (62) contacts and presses with one side of the connecting plate (67), a mounting plate (68) is fixed to one side of the slider (65), a connecting column (69) is fixed to one side of the mounting plate (68), and the connecting column (69) slides in the slide groove (55).

2. The device for preparing a graphitized composite porous carbon skeleton according to claim 1, characterized in that: An electric telescopic rod (58) is fixed to the bottom end of the rotating rod (56), a mixing blade (59) is fixed to the output end of the electric telescopic rod (58), and a material box (510) is fixed to one side of the Z-shaped rotating arm (54).

3. The device for preparing a graphitized composite porous carbon skeleton according to claim 2, wherein: The bottom of the material box (510) is connected to a discharge pipe (511), a pulley 1 (610) is fixed on the rotating shaft of the cam (62), a pulley 2 (611) is fixed on the rotating shaft of the bevel gear 1 (53), the pulley 1 (610) and the pulley 2 (611) are connected to each other through a belt (612), and an L-shaped seat (613) is fixed on one side of the slide (51).

4. The device for preparing a graphitized composite porous carbon skeleton according to claim 3, wherein: A motor (614) is fixed to one side of the L-shaped seat (613), and the motor (614) drives the rotating shaft of the bevel gear (53) to rotate. The slide (51) is also provided with an automatic scraping assembly (7) for scraping the mixture in the mold (3). The automatic scraping assembly (7) includes a disc (71) fixed to one end of the rotating shaft of the cam (62), a boss (72) is fixed to one side of the disc (71), a folding rod (73) is fixed to one side of the slide (51), and a swing rod (74) is connected to one side of the folding rod (73) through a pin. A guide groove (75) is formed on the swing rod (74), and the boss (72) slides in the guide groove (75). A missing gear (76) is fixed to one end of the swing rod (74), and a horizontal plate (77) is fixed to one side of the slide (51).

5. The device for preparing a graphitized composite porous carbon skeleton according to claim 4, characterized in that: A guide rail (78) is provided on the horizontal plate (77), a rack (79) is slidably connected in the guide rail (78), the missing gear (76) is engaged with the rack (79), a bent rod (710) is fixed on one side of the rack (79), a square plate (711) is fixed on one end of the bent rod (710), an electric telescopic rod 2 (712) is fixed on the top of the square plate (711), and a scraper (713) is fixed on the output end of the electric telescopic rod 2 (712).

6. The device for preparing a graphitized composite porous carbon skeleton according to claim 5, characterized in that: The scraper (713) is provided with a removal unit (8), and the removal unit (8) is used to remove a small amount of material adsorbed by the scraper (713) due to electrostatic action when scraping the material. The removal unit (8) includes a connecting rod (81) fixed to one side of the scraper (713), one end of the connecting rod (81) is rotatably connected to a side plate (82), a U-shaped clamp (83) is provided on one side of the side plate (82), and a spring (84) is fixed between one side of the U-shaped clamp (83) and one side of the side plate (82).

7. The device for preparing a graphitized composite porous carbon skeleton according to claim 6, characterized in that: A vertical plate (13) is fixed on the top of the slide (51), a cylinder 2 (14) is fixed on one side of the vertical plate (13), and the output end of the cylinder 2 (14) is fixed to one side of the slide (51). A lower template (2) is fixed on the top of the base (1), a mold (3) is fixed on the top of the lower template (2), and a mounting platform (4) is fixed on the top of the lower template (2). An L-shaped limit plate (85) is rotatably connected to the U-shaped clamp (83) through a pin shaft, and one side of the L-shaped limit plate (85) contacts and squeezes one side of the side plate (82). Four support columns (9) are fixed on the top of the lower template (2), and an upper template (10) is fixed between the tops of the four support columns (9). A cylinder 1 (11) is fixed on the top of the upper template (10), and a hot pressing plate (12) is fixed to the output end of the cylinder 1 (11).

8. The method for preparing a graphitized composite porous carbon skeleton according to claim 7, wherein: The specific steps include: Step 1: Add the crushed biomass raw material to the pore-forming agent solution, stir and mix thoroughly to make the pore-forming agent evenly adsorbed on the surface of the biomass raw material, then add the catalyst solution to form a mixture, add the mixture to the hopper (513), start the cylinder 2 (14), the cylinder 2 (14) drives the slide (51) to move to the right and push it to the top of the mold (3), start the motor (614), the motor (614) drives the cam (62) to rotate, and when the cam (62) rotates, it drives the slider (65) and the mounting plate (68) to move back and forth left and right, and the mounting plate ( 68) drives the Z-shaped rotating arm (54) to rotate 90 degrees clockwise and counterclockwise. When the material box (510) rotates to the upper side, the material box (510) squeezes the touch switch (515), and the touch switch (515) opens the electric door in the hopper (513), and the mixture falls into the material box (510). When the material box (510) rotates to a horizontal state, the mixture is discharged into the mold (3) through the discharge pipe (511), and at the same time, the electric telescopic rod (58) is started, and the electric telescopic rod (58) drives the mixing blade (59) to stir the mixture evenly to improve the fluidity of the mixture; Step 2: When the cam (62) rotates, it synchronously drives the disc (71) to rotate, and the disc (71) drives the missing gear (76) to swing around the pin shaft, and then the missing gear (76) drives the rack (79) to reciprocate left and right, and the electric telescopic rod (712) is started. The electric telescopic rod (712) drives the scraper (713) to move downward, and as the scraper (713) reciprocates left and right, the mixture in the mold (3) is scraped flat; Step 3: Turn and open the L-shaped limit plate (85). At this time, the compressed spring 2 (84) is reset, driving the U-shaped clamp (83) to move. The U-shaped clamp (83) quickly removes the mixture adhering to the surface of the scraper (713). After the mixture is mixed and flattened, start the cylinder 1 (11). The cylinder 1 (11) drives the hot pressing plate (12) to move down into the mold (3) to hot-press the mixture to finally form a precursor.

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