Preparation device of composite porous biochar material
By combining LiBr etching and dopamine oxidation and autopolymerization technology in the tank, agricultural waste is converted into efficient porous biochar, solving the problem of high energy consumption in traditional preparation, achieving efficient pollutant capture and low cost Biochar preparation.
Patent Information
- Application Number
- CN202421083764.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-01-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The energy consumption is high during the preparation of existing porous biochar materials, making it difficult to effectively degrade complex pollutants in industrial wastewater.
Using integrated LiBr etching, dopamine oxidation and in-situ synthesis technology of catalytic particles, agricultural waste is converted into porous biochar through mild LiBr etching technology, combined with stirring and heating components to process it in the tank to increase the specific surface area and porosity.
It realizes the preparation of porous biochar with low cost and low energy consumption, significantly improves pollutant capture efficiency, simplifies the process flow, and is suitable for industrial applications.
Smart Images
Figure CN222342838U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of biochar preparation, in particular to a preparation device for a composite porous biochar material. Background Art
[0002] The continuous discharge of industrial wastewater containing complex pollutants has seriously damaged the natural water environment. Due to its high toxicity and non-degradable side effects, the pollutants have caused great harm to microbial communities, ecosystems and even human health, indicating the necessity of deep treatment. In recent years, technologies such as exchange, adsorption and catalytic degradation have made great progress in treating harmful pollutants in water environments. Considering the preparation cost, application cost and energy cost, porous materials based on adsorption technology have the advantages of simple operation, versatility and environmental protection, and have broad application prospects in the capture of harmful pollutants in industrial brine wastewater.
[0003] Woody biomass materials have the characteristics of low cost, biodegradability, and abundant resources, and have become excellent platform materials for synthesizing environmentally friendly functional materials. In particular, porous biochar materials with high specific surface area have the potential to capture and accumulate pollutant molecules. The porous biochar materials in the existing technology are mostly prepared by high-temperature pyrolysis, which consumes a lot of energy. Utility Model Content
[0004] The main purpose of the utility model is to provide a preparation device for a composite porous biochar material to solve the above-mentioned problems.
[0005] To achieve the above-mentioned purpose, the utility model provides a preparation device of a composite porous biochar material, comprising a tank body, wherein a raw material inlet, a stirring motor, an exhaust pipe and a vacuum pump are arranged on the top of the tank body, and the exhaust pipe is connected to the vacuum pump; a stirring rod connected to the power of the stirring motor is arranged in the tank body, and a spiral blade is arranged on the stirring rod; a heating component and a temperature sensor are arranged on the inner wall of the tank body; a drainage port is arranged at the bottom of the tank body, a discharge port is arranged at the bottom of the outer wall of the tank body, and a filter screen is also arranged in the tank body, and the filter screen is located above the drainage port and flush with the bottom of the discharge port; a pure water inlet pipe and a LiBr solution inlet pipe are arranged on the top of the outer wall of the tank body.
[0006] Furthermore, a Tris buffer solution inlet pipe is also arranged on the top of the outer wall of the tank body.
[0007] Furthermore, a liquid inlet pipe for bismuth nitrate pentahydrate ethanol solution and a liquid inlet pipe for NaBr solution are also provided on the top of the outer wall of the tank body.
[0008] Furthermore, the bottom of the tank is conical.
[0009] Furthermore, support legs are provided at the bottom of the tank body.
[0010] The utility model has the following beneficial effects:
[0011] The utility model integrates LiBr etching, dopamine oxidation self-polymerization and in-situ synthesis of catalytic particles. The synthesis process is simple, mild, controllable, and easy to expand industrial applications. The mild LiBr etching technology is used to successfully convert agricultural waste into an advanced biochar substrate, avoiding the high energy consumption problem of the traditional high-temperature pyrolysis method for preparing activated carbon. The specific surface area of the prepared porous substrate is significantly improved, and the high porosity is more conducive to the interface capture of pollutants. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of a preparation device for a composite porous biochar material proposed in the utility model.
[0013] In the figure: 1-tank body; 2-raw material inlet; 3-stirring motor; 4-exhaust pipe; 5-vacuum pump; 6-temperature sensor; 7-stirring rod; 8-spiral blade; 9-heating component; 10-filter screen; 11-discharge port; 12-liquid discharge port; 13-pure water inlet pipe; 14-LiBr solution inlet pipe; 15-Tris buffer solution inlet pipe; 16-bismuth nitrate pentahydrate ethanol solution inlet pipe; 17-NaBr solution inlet pipe; 18-support leg. DETAILED DESCRIPTION
[0014] In order to achieve the above-mentioned purpose and effect, the technical means and structure adopted by the utility model are described in detail with reference to the accompanying drawings for the preferred embodiments of the utility model and their features and functions.
[0015] like Figure 1 As shown, the utility model provides a preparation device of a composite porous biochar material, comprising a tank body 1, wherein a raw material inlet 2, a stirring motor 3, an exhaust pipe 4 and a vacuum pump 5 are arranged on the top of the tank body 1, and the exhaust pipe 4 is connected to the vacuum pump 5; a stirring rod 7 connected to the stirring motor 3 is arranged in the tank body 1, and a spiral blade 8 is arranged on the stirring rod 7; a heating component 9 and a temperature sensor 6 are arranged on the inner wall of the tank body 1; a drain port 12 is arranged at the bottom of the tank body 1, a discharge port 11 is arranged at the bottom of the outer wall of the tank body 1, and a filter screen 10 is also arranged in the tank body 1, and the filter screen 10 is located above the drain port 12 and is flush with the bottom of the discharge port 11; a pure water inlet pipe 13, a LiBr solution inlet pipe 14, a Tris buffer solution inlet pipe 15, a bismuth nitrate pentahydrate ethanol solution inlet pipe 16 and a NaBr solution inlet pipe 17 are arranged on the top of the outer wall of the tank body 1.
[0016] When in use, a certain amount of agricultural waste raw materials are crushed into powder and put into the tank body 1 from the raw material inlet 2, the raw material inlet 2 is closed, the LiBr solution inlet pipe 14 is opened, a certain amount of LiBr solution is added, and then the LiBr solution inlet pipe 14 is closed, the stirring motor 3 and the heating component 9 are started, and the stirring motor 3 drives the stirring rod 7 and the spiral blade 8 to rotate to mix the materials evenly, and react at 100°C for 2.5 hours. The rotation direction of the stirring motor 3 is opposite to the rotation direction of the spiral blade 8, so that the solution is stirred up and down to avoid clogging of the filter 10. After the reaction is completed, the drain port 12 is opened to drain the liquid, and the pure water inlet pipe 13 is opened for cleaning. After the cleaning is completed, the pure water inlet pipe 13 is closed, and the drain port 12 is closed after the drainage is completed, and then the vacuum pump 5 is opened to evacuate the vacuum. During the process, the stirring motor 3 and the heating component 9 do not stop working, and vacuum drying and purification are carried out. After drying, a porous biochar substrate is obtained.
[0017] Afterwards, turn off the heating component 9, open the Tris buffer solution inlet pipe 15, add a certain amount of Tris buffer solution, and stir until it is evenly dispersed; then add a certain amount of dopamine from the raw material inlet 2 into the tank body 1 to carry out oxidative self-polymerization reaction; after the reaction is completed, open the drain port 12 to drain the liquid, and at the same time open the pure water inlet pipe 13 for cleaning. After the cleaning is completed, close the pure water inlet pipe 13, and after the drainage is completed, close the drain port 12, then open the vacuum pump 5 to evacuate the vacuum, open the heating component 9 for heating, and perform vacuum drying and purification. After drying, dopamine-modified porous biochar is obtained.
[0018] After that, turn off the heating component 9, open the bismuth nitrate pentahydrate ethanol solution inlet pipe 16, add a certain amount of bismuth nitrate pentahydrate ethanol solution, and stir until evenly mixed. Subsequently, open the NaBr solution inlet pipe 17 to add a certain amount of NaBr solution, stir thoroughly, turn on the heating component 9, and react at 140°C for 6h. After the reaction is completed, open the drain port 12 for drainage, and open the pure water inlet pipe 13 for cleaning. After cleaning, close the pure water inlet pipe 13, close the drain port 12 after the drainage is completed, and then turn on the vacuum pump 5 for vacuuming. After drying, a composite porous biochar material is obtained.
[0019] Finally, the discharge port 11 is opened to take out the composite porous biochar material from the tank body 1 .
[0020] In another embodiment, the bottom of the tank body 1 is conical to facilitate drainage.
[0021] In another embodiment, support legs 18 are provided at the bottom of the tank body 1 to enhance the stability of the device.
[0022] The above description is only the preferred embodiment of the utility model, not all embodiments. Anyone should be aware that structural changes made under the inspiration of the utility model, and all technical solutions that are the same or similar to the utility model, belong to the protection scope of the utility model.
Claims
1. A preparation device for a composite porous biochar material, characterized in that: The invention comprises a tank body, wherein a raw material inlet, a stirring motor, an exhaust pipe and a vacuum pump are arranged on the top of the tank body, and the exhaust pipe is connected to the vacuum pump; a stirring rod connected to the stirring motor power is arranged in the tank body, and a spiral blade is arranged on the stirring rod; a heating component and a temperature sensor are arranged on the inner wall of the tank body; a liquid discharge port is arranged at the bottom of the tank body, a material discharge port is arranged at the bottom of the outer wall of the tank body, a filter screen is also arranged in the tank body, and the filter screen is located above the liquid discharge port and is flush with the bottom of the material discharge port; a pure water inlet pipe and a LiBr solution inlet pipe are arranged on the top of the outer wall of the tank body.
2. The device for preparing a composite porous biochar material according to claim 1, characterized in that: A Tris buffer solution inlet pipe is also arranged on the top of the outer wall of the tank.
3. A preparation device for a composite porous biochar material according to claim 2, characterized in that: The top of the outer wall of the tank body is also provided with a bismuth nitrate pentahydrate ethanol solution inlet pipe and a NaBr solution inlet pipe.
4. The device for preparing a composite porous biochar material according to claim 1, characterized in that: The bottom of the tank is conical.
5. A device for preparing a composite porous biochar material according to any one of claims 1 to 4, characterized in that: The bottom of the tank body is provided with supporting legs.