Biomass porous carbon raw material activation device

Abstract

A biomass porous carbon raw material activation device comprises an activation pool inserted in soil, a support is arranged in the activation pool and used for containing a container containing activation liquid, a mesh box used for containing biomass raw materials is arranged in the container, and the biomass porous carbon raw material activation device further comprises a stirring module used for stretching into the mesh box to conduct stirring. The temperature control module is used for stretching into the activation pool to control the temperature, and the sealing plate is arranged on the inner side wall of the activation pool, so that the problems of insufficient infiltration, non-uniform activation, difficulty in keeping the activation temperature in a range required by a process, and the like during pre-activation of the biomass raw material are effectively solved. The problems that biomass raw materials are difficult to discharge and feed liquid is difficult to separate, and activating liquid is easy to drip into a constant-temperature water bath to cause water quality pollution are solved.

Description

Technical Field

[0001] This utility model relates to the field of activation, and in particular to an activation device for biomass porous carbon raw materials. Background Technology

[0002] Compared to mainstream artificial graphite anode materials, silicon-carbon anode materials for lithium-ion batteries have the advantage of high specific capacity, which directly contributes to improving the energy density of lithium-ion batteries and determines the development process of lithium-ion batteries towards semi-solid and all-solid-state technologies. Therefore, it has become the main research and development direction for anode materials. Currently, silicon-carbon anode materials have reached the third generation, which uses porous carbon as a framework, employing CVD to deposit nano-silicon followed by carbonization to prepare silicon-carbon composite materials. Compared to first-generation nano-silicon-carbon anode materials and second-generation SiOx-C anode materials, CVD silicon-carbon composite materials show significant improvements in specific capacity, cycle performance, and charge / discharge rate, and are expected to become the mainstream route for silicon-carbon anode materials. However, compared to artificial graphite anodes, CVD silicon-carbon composite materials still suffer from immature production processes and high manufacturing costs, making large-scale use difficult in the short term. In CVD silicon-carbon composite materials, the porous carbon framework accounts for more than 50% of the cost; therefore, reducing the cost of porous carbon framework raw materials significantly reduces the final product production cost.

[0003] Currently, the most researched porous carbon frameworks are resin-based, represented by phenolic resins, and biomass-based, represented by coconut shells. Resin-based porous carbon frameworks are stable, but their preparation process causes significant pollution and is costly. Biomass-based porous carbon possesses a naturally developed three-dimensional network structure, is abundant in resources, inexpensive, and can be regenerated annually. Using biomass as a raw material for porous carbon frameworks offers a significant cost advantage and is considered an ideal carbon source. Existing laboratory techniques for pre-activating biomass porous carbon raw materials can only process samples in the gram range each time, and the equipment is insufficient for pilot-scale or mass production. Utility Model Content

[0004] To address the aforementioned issues, this technical solution provides a biomass porous carbon raw material activation device, which effectively solves problems such as insufficient wetting, uneven activation, difficulty in maintaining the activation temperature within the required process range during biomass raw material pre-activation, difficulties in biomass raw material discharge and liquid-material separation, and easy dripping of activation liquid into the constant temperature water bath causing water pollution.

[0005] To achieve the above objectives, the technical solution is as follows:

[0006] A biomass porous carbon raw material activation device includes an activation pool inserted into the soil, a support in the activation pool for holding a container containing an activation liquid, a mesh box for placing biomass raw materials in the container, a stirring module for extending into the mesh box for stirring, a temperature control module for extending into the activation pool for temperature control, and a sealing plate on the inner side wall of the activation pool.

[0007] In some embodiments, the support includes a plurality of vertical beams for enclosure, a tie rod for protection is provided between two adjacent vertical beams, a plurality of bottom crossbeams for supporting the container are provided at the lower end of the vertical beams, and the bottom crossbeams are also provided with support feet for raising.

[0008] In some embodiments, the inner diameter of the container gradually decreases from the top to the bottom.

[0009] In some embodiments, the mesh box has multiple through holes on its side walls and bottom, and a lifting rope at its upper end.

[0010] In some embodiments, the stirring module includes a motor connected to a speed reducer, the speed reducer connected to a frequency converter, the speed reducer connected to a main shaft, a plurality of stirring arms arranged around the outer periphery of the main shaft, the ends of the stirring arms being provided with blades, and a crossbeam for supporting the motor.

[0011] In some embodiments, the temperature control module includes a temperature controller, a thermal resistor extending into the activation pool and controlled by the temperature controller, and an electric heating rod connected to the temperature controller for heating.

[0012] In some embodiments, the sealing plate includes a water injection hole for water injection, and also includes a first hole and a second hole through which the thermal resistor and the electric heating rod pass, respectively. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the support structure according to an embodiment of the present utility model;

[0017] Figure 4 This is a schematic diagram of the container structure according to an embodiment of the present utility model;

[0018] Figure 5 This is a schematic diagram of the mesh box structure according to an embodiment of the present utility model;

[0019] Figure 6 This is a schematic diagram of the stirring module structure according to an embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of the temperature control module structure according to an embodiment of the present invention;

[0021] Figure 8 This is a schematic diagram of the sealing plate structure according to an embodiment of the present utility model;

[0022] Figure 9 This is a schematic diagram of the working structure of an embodiment of the present invention. Figure 1 ;

[0023] Figure 10 This is a schematic diagram of the working structure of an embodiment of the present invention. Figure 2 . Detailed Implementation

[0024] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Please refer to Figure 1-10 As shown, the problems addressed by this application are: biomass porous carbon pre-activation is currently at the laboratory gram-level stage, lacking mature pilot-scale or mass production equipment; the temperature needs to be maintained within a certain range during biomass porous carbon pre-activation, requiring the formulation of a heating and temperature control system; wetting during biomass porous carbon pre-activation is difficult, easily resulting in insufficient wetting and uneven activation; discharging and solid-liquid separation after biomass porous carbon pre-activation are difficult; and the activation liquid easily drips and contaminates the water quality of the constant temperature water bath during discharging after biomass porous carbon pre-activation. Specifically, this application discloses a biomass porous carbon raw material activation device, including an activation pool 1 inserted into the soil 2, a support 3 provided in the activation pool 1, the support 3 being used to hold a container 4 containing activation liquid, a mesh box 5 for placing biomass raw materials in the container 4, a stirring module 6 for stirring inside the mesh box 5, a temperature control module 7 for temperature control inside the activation pool 1, and a sealing plate 8 provided on the inner side wall of the activation pool 1.

[0026] The activation tank 1 adopts a sunken design, mostly located in the ground soil 2. Its walls and bottom are constructed of brick and cement masonry or cement mortar, with the inner surface and bottom smoothed and waterproofed. The ground soil 2 primarily serves to insulate and support the activation tank 1, preventing temperature fluctuations due to low external temperatures or large diurnal temperature variations, and protecting the tank 1 from cracking, deformation, or tilting under internal liquid pressure. Furthermore, the sunken design reduces the height of the activation tank 1, improving the convenience of preparing the activation solution and activating biomass raw materials.

[0027] In this embodiment, the support 3 includes a plurality of vertical beams 304 for enclosure, and a tie rod 305 for protection is provided between two adjacent vertical beams 304. The lower end of the vertical beams 304 is provided with a plurality of bottom crossbeams 302 for supporting the container 4, and the bottom crossbeams 302 are also provided with support legs 303 for raising.

[0028] The metal support 3 consists of an upper opening 301, a bottom 302, and bottom supports 303. The upper opening 301 and the bottom crossbeam 302 are connected by a vertical beam 304. The plastic container 4 is placed on the bottom crossbeam 302 via the upper opening 301 of the metal support. The bottom supports 303 maintain an appropriate distance between the plastic container 4 and the bottom of the activation tank. Additionally, the outer side of the metal support maintains an appropriate distance from the inner wall of the activation tank, thus creating a space for storing tap water or softened water for water bath heating and insulation of the plastic container. Multiple tie rods 305 are also installed between the upper opening 301 and the bottom crossbeam 302 to increase support and protection for the plastic container 4, preventing significant outward expansion and deformation of the plastic container after it is filled with activation liquid and materials.

[0029] In this embodiment, the inner diameter of the container 4 gradually decreases from the top to the bottom. The plastic container 4 is used to prepare and hold the activation solution, as well as to soak and activate biomass raw materials. The plastic container 4 has an inverted trapezoidal structure, with the bottom 402 being slightly smaller than the opening 401, to facilitate placement into or removal from the metal support 3.

[0030] In this embodiment, the mesh box 5 is used to hold biomass raw materials and is placed inside the plastic container 4. It is made of 304 or 316 stainless steel. The side walls 501 and the bottom 502 are provided with millimeter-sized mesh holes, which allow the activation liquid to pass through smoothly while making it difficult for the biomass raw materials to pass through. A lifting rope 503 is provided on the top edge. The mesh box 5 can be lifted and moved by pulling the lifting rope 503 with a crane or electric arc furnace.

[0031] In this embodiment, the stirring module 6 includes a motor 601, a reducer 602 connected to the motor 601, a frequency converter 603 connected to the reducer 602, a main shaft 604 connected to the reducer motor 602, a plurality of stirring arms 605 provided on the outer periphery of the main shaft 604, a blade 606 provided at the end of the stirring arm 605, and a crossbeam 607 for supporting the motor 601.

[0032] The stirring module 6 can be moved by lifting the lifting rope 609 using a crane or electric hoist. The stirring arm 605 and the blade 606 are inserted into the plastic container 4 or the mesh box 5. Starting the motor 601 can stir the mixture during the preparation of the activation solution or the soaking and activation of biomass raw materials, thereby shortening the preparation time of the activation solution and ensuring thorough soaking and activation of the biomass raw materials. Adjusting the frequency converter 603 can change the stirring speed to meet the operational requirements of the preparation of the activation solution and the soaking and activation of biomass raw materials.

[0033] In this embodiment, the temperature control module 7 includes a temperature controller 701, a thermal resistor 702 that extends into the activation pool 1 and is controlled by the temperature controller 701, and an electric heating rod 703 connected to the temperature controller 701 for heating, which plays the role of monitoring the water bath temperature and heating and controlling the temperature.

[0034] In this embodiment, the sealing plate 8 includes a water injection hole 801 for water injection, and a first hole 802 and a second hole 803 for the thermal resistor 702 and the electric heating rod 703 to pass through, respectively. The outer side of the sealing plate 8 is aligned with the inner wall of the activation tank 1, thereby preventing the activation liquid from dripping or the biomass raw materials from falling into the water used for heating and insulation and causing pollution, and also inhibiting excessive evaporation of the heating and insulation water. The sealing plate 8 is provided with a water injection hole 801 for injecting or adding tap water or softened water into the activation tank body 1, and holes 802 and 803 are provided for the wires of the thermal resistor 702 and the electric heating rod 703 to pass through and enter the activation tank 1.

[0035] During operation, after the activation tank 1 is constructed, a crane or electric hoist is used to hoist the metal support 3 into the bottom of the activation tank 1, and a sealing plate 8 is welded to its top outer side. The thermal resistor 702 and electric heating rod 703 of the temperature control module 7 are connected. Then, the plastic container 4 is placed inside the metal support 3, and water for preparing the activation solution is added. The stirring module 6 is then hoisted and placed on top of the activation tank 1, with the stirring arm 605 and blade 606 inserted into the plastic container 4. The motor 601 is started for slow stirring. Afterward, the weighed iron salt or manganese salt is added to prepare the activation solution 9 until it is evenly stirred. Biomass raw materials are loaded into the mesh box 5, the stirring module 6 is hoisted, and the mesh box 5 containing biomass raw materials 10 is hoisted into the plastic box 4. The stirring module 6 is then hoisted again so that the stirring arm 605 and blade 606 are inserted into the mesh box 5, and the motor 601 is started for stirring. Add tap water or softened water 11 for the constant temperature water bath outside the plastic tank 4 through the water inlet 801 of the sealing plate 8 to the set height. Then, start the temperature controller 701 to heat to the activation temperature and maintain a constant temperature. After activation, lift and remove the stirring module 6, then lift the mesh box 5 for solid-liquid separation until no visible activation liquid drips out, and then proceed to the next process. The activation liquid is prepared as follows: Figure 9 As shown, the biomass raw material activation operation is as follows: Figure 10 As shown.

[0036] The effects of this application are as follows:

[0037] The activation tank adopts a ground-sunken design, which minimizes the impact of ambient temperature changes on the tank temperature. It is structurally stable, easy to operate, and allows for flexible volume design, resulting in lower manufacturing costs.

[0038] The activation tank is equipped with a heating and temperature control module, which uses water bath heating to bring the temperature of the activation liquid in the plastic container to and stabilize it within the temperature range required for the activation of biomass porous carbon raw materials.

[0039] The activation tank is equipped with a stirring module with adjustable stirring speed, which can shorten the preparation time of the activation solution and promote the full immersion and activation of biomass raw materials;

[0040] The activation solution is prepared and stored in plastic containers, which are resistant to corrosion from acidic and alkaline solutions and save costs.

[0041] Using stainless steel mesh boxes to hold biomass raw materials ensures that the biomass raw materials can be fully soaked in the activation solution, and also facilitates the harvesting and solid-liquid separation of the biomass raw materials after activation.

[0042] A sealing plate is installed between the inner wall of the activation tank and the metal support to prevent the activation liquid from dripping or the biomass raw materials from falling into the water used for heating and insulation, thus preventing pollution, and also to inhibit excessive evaporation of water.

[0043] The above description is only a preferred embodiment of this application and is not intended to limit the scope of implementation of this application. Any other embodiments whose principles and basic structures are the same as or similar to those of this application are within the protection scope of this application.

Claims

1. A biomass porous carbon feedstock activation device, characterized in that, The utility model provides an activation tank (1) is inserted in soil (2), the activation tank (1) is equipped with support (3) in, the support (3) is used for accommodating the container (4) of being equipped with activation liquid, the container (4) is equipped with mesh box (5) for placing biomass raw material in, further include the stirring module (6) for going in the mesh box (5) and stirring, further include the temperature control module (7) for going in the activation tank (1) and controlling temperature, further include the sealing plate (8) of being equipped with in the inside wall of the activation tank (1).

2. The biomass porous carbon raw material activation device according to claim 1, characterized in that: The support (3) includes a plurality of vertical bars (304) for surrounding, a pull rod (305) is arranged between two adjacent vertical bars (304) for protection, the lower end of the vertical bar (304) is provided with a plurality of bottom cross beams (302) for supporting the container (4), and the bottom cross beam (302) is further provided with a supporting leg (303) for heightening.

3. The biomass porous carbon feedstock activation device according to claim 1, characterized in that: The inner diameter of the container (4) gradually decreases from the upper end to the lower end.

4. The biomass porous carbon feedstock activation device according to claim 1, characterized in that: The sidewall and the bottom of the mesh box (5) are provided with a plurality of through holes, and the upper end is further provided with a lifting rope (503).

5. The biomass porous carbon feedstock activation device according to claim 1, wherein: The stirring module (6) includes a motor (601), the motor (601) is connected with a speed reducer (602), the speed reducer (602) is connected with a frequency converter (603), the speed reducer (602) is connected with a main shaft (604), the outer periphery of the main shaft (604) is provided with a plurality of stirring arms (605), the end of the stirring arm (605) is provided with a paddle (606), and the motor (601) is further supported by a cross beam (607).

6. The biomass porous carbon feedstock activation device according to claim 1, characterized in that: The temperature control module (7) includes a temperature controller (701), a heating resistor (702) extending into the activation tank (1) and controlled by the temperature controller (701), and an electric heating rod (703) connected with the temperature controller (701) for heating.

7. The biomass porous carbon feedstock activation device according to claim 6, characterized in that: The sealing plate (8) includes a water injection hole (801) for water injection, and a first hole (802) and a second hole (803) for the heating resistor (702) and the electric heating rod (703) to pass through, respectively.

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