Concrete performance enhancing device for flash evaporation of graphene by using biomass tar

Abstract

The invention relates to the technical field of graphene preparation, and discloses a biomass tar flash evaporation graphene concrete performance enhancing device which comprises a mounting bottom plate, a pretreatment reaction tank is fixedly connected to the middle side of the top of the mounting bottom plate, and a driving motor is mounted at the top of the pretreatment reaction tank; the output end of the driving motor is fixedly connected with a transmission shaft, the inner top wall of the driving motor is fixedly connected with a first gear through a plurality of fixing rods, and the middle side of the outer portion of the transmission shaft is fixedly connected with a driving frame. The waste tar is converted into a graphene material with a high additional value through efficient resource utilization of biomass tar and an innovative flash evaporation graphene preparation technology and a matched system. The graphene material forms a stable nano reinforced network in a cement matrix, so that the compressive strength, the crack resistance and the chloride ion penetration resistance of concrete are remarkably improved, the corrosion of steel bars is effectively delayed, and the service life of a concrete structure is greatly prolonged.

Description

Technical Field

[0001] This invention relates to the field of graphene preparation technology, specifically to a concrete performance enhancement device using biomass tar flash-evaporated graphene. Background Technology

[0002] In the field of concrete, improving concrete performance has always been a key research focus. Traditionally, mineral admixtures such as fly ash and slag are often used to improve concrete performance. These materials can fill the internal pores of concrete to a certain extent, increasing density and enhancing strength and durability. However, their improvement effect is limited and cannot meet the high-performance requirements of some special projects.

[0003] Graphene, as a novel nanomaterial, possesses excellent mechanical, electrical, and thermal properties. Its theoretical tensile strength can reach 130 GPa, far exceeding that of ordinary steel, and it also exhibits good flexibility and electrical conductivity. In recent years, the application of graphene in concrete modification has attracted attention. Adding graphene to concrete is expected to utilize its unique properties to construct a reinforcing network, significantly improving the overall performance of concrete. However, several challenges exist in practical applications. On the one hand, the preparation cost of graphene is high, and traditional preparation methods, such as chemical vapor deposition, are difficult to apply on a large scale in the concrete field, limiting its widespread use. On the other hand, graphene has poor dispersibility in concrete and is prone to agglomeration, failing to fully exert its reinforcing effect, resulting in unsatisfactory performance improvement in concrete.

[0004] Furthermore, the treatment of waste materials such as biomass tar during concrete production presents challenges. Biomass tar is a byproduct of biomass pyrolysis, with a complex composition containing various organic compounds. Currently, biomass tar is primarily treated through simple incineration or landfill, which not only wastes resources but also potentially pollutes the environment. Effectively converting biomass tar into valuable materials for enhancing concrete performance would achieve resource recycling and simultaneously solve the waste disposal problem. Meanwhile, existing concrete enhancement devices suffer from limitations such as limited functionality, complex operation, large size, and high maintenance costs. Some devices used for adding mineral admixtures can only perform simple mixing, failing to meet the fine dispersion requirements of novel materials like graphene.

[0005] To address these issues, those skilled in the art have proposed a concrete performance enhancement device using biomass tar flash-evaporated graphene. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a concrete performance enhancement device using biomass tar flash-evaporated graphene, which solves the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a concrete performance enhancement device using biomass tar flash-evaporated graphene, comprising a mounting base plate, a pretreatment reaction tank fixedly connected to the top center of the mounting base plate, a drive motor mounted on the top of the pretreatment reaction tank, a transmission shaft fixedly connected to the output end of the drive motor, a first gear fixedly connected to the inner top wall of the drive motor via multiple fixed rods, a drive frame fixedly connected to the outer center of the transmission shaft, multiple protruding guard plates of the drive frame being movably connected to mixing rods via bearings, a connecting sleeve fixedly connected to the bottom of the mixing rod, two mixing plates fixedly connected to the outer side of the connecting sleeve, a driven gear fixedly connected to the top of the mixing rod, and a flash reactor fixedly connected to one side of the top of the mounting base plate, the flash reactor being driven by a flash-evaporated graphene preparation system.

[0008] Preferably, the outer sides of the plurality of driven gears are meshed with the outer side of the first gear, and the drive motor is electrically connected through a controller.

[0009] Preferably, a housing is fixedly connected to the top side of the mounting base plate, a vacuum pump is installed on the outside of the housing, and a vacuum tube is connected to the outside of the housing.

[0010] Preferably, the end of the vacuum tube furthest from the housing is connected to the interior of the flash reactor.

[0011] Preferably, a feed pipe is connected to one side of the top of the pretreatment reaction vessel, and the feed pipe is used to feed materials into the interior of the pretreatment reaction vessel.

[0012] Preferably, the flash graphene preparation system includes:

[0013] The power module, electrically connected to the flash reactor, is used to provide high-voltage current for the flash reaction.

[0014] A temperature control module is used to monitor and regulate the temperature inside the flash reactor;

[0015] A vacuum module is connected to the outlet of the flash reactor to remove air and reduce the pressure within the reaction system.

[0016] A gas circulation and purification module, connected to the pretreatment reaction tank, is used to realize gas circulation and purification;

[0017] The control module, along with the pretreatment reaction vessel, power supply module, temperature control module, vacuum module, and gas circulation and purification module, is used to monitor, acquire, and automatically control the operating parameters of each module in real time.

[0018] Preferably, the power module includes a control circuit for adjusting the intensity of the output current and the discharge time.

[0019] Preferably, the temperature control module includes a temperature sensor and a heating device. The temperature sensor is installed inside the flash reactor to monitor the temperature inside the reactor in real time and transmit the temperature signal to the control unit. The heating device is used to heat the flash reactor.

[0020] Preferably, the gas circulation and purification module includes a gas circulation pump and a gas purification device. The gas circulation pump is used to circulate the gas in the pretreatment reaction tank to ensure uniform gas distribution, and the gas purification device is used to remove impurity gases generated during the reaction process.

[0021] This invention provides a device for enhancing the performance of concrete using biomass tar flash-evaporated graphene. It has the following beneficial effects:

[0022] 1. This invention achieves efficient resource utilization of biomass tar by converting waste tar into high-value-added graphene materials through an innovative flash evaporation graphene preparation technology. This graphene material forms a stable nano-reinforcing network in the cement matrix, significantly improving the compressive strength, crack resistance, and chloride ion penetration resistance of concrete, effectively delaying steel corrosion, and greatly extending the service life of concrete structures. Simultaneously, the system exhibits a high tar conversion rate, significantly improved energy utilization, and substantially reduced operating costs. The device adopts a modular design, occupies a small area, has low maintenance costs, and ensures stable product quality through real-time monitoring and automated control.

[0023] 2. This invention utilizes biomass tar to prepare flash-evaporated graphene. During the preparation process, a planetary gear stirring structure is employed to achieve efficient mixing of the tar, reducing its viscosity and providing a uniform liquid feedstock for subsequent flash evaporation. Inside the flash reactor, by controlling parameters such as high-voltage current, temperature, and vacuum, the tar undergoes reactions such as cracking to form graphene. The entire device adopts a modular design, facilitating expansion and maintenance, and reducing production costs. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a perspective view of the motor end of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the pretreatment reaction vessel of the present invention;

[0027] Figure 4 This is a schematic diagram of the first gear structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the hybrid plate structure of the present invention;

[0029] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0030] Figure 7 This is a schematic flowchart of the intelligent control system of the present invention;

[0031] Figure 8 This is a flowchart illustrating the operation of the Joule heating device of the present invention.

[0032] The components include: 1. Mounting base plate; 2. Pretreatment reaction tank; 301. Box body; 302. Vacuum pump; 303. Vacuum tube; 4. Flash reactor; 5. Drive motor; 6. Feed pipe; 7. Drive shaft; 8. Fixing rod; 901. First gear; 902. Drive frame; 903. Mixing rod; 904. Mixing plate; 905. Connecting sleeve; 906. Driven gear. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see the appendix Figure 1 -Appendix Figure 8 This invention provides a concrete performance enhancement device for flash-evaporated graphene from biomass tar, comprising a mounting base plate 1, a pretreatment reaction tank 2 fixedly connected to the top center of the mounting base plate 1, a drive motor 5 mounted on the top of the pretreatment reaction tank 2, a transmission shaft 7 fixedly connected to the output end of the drive motor 5, a first gear 901 fixedly connected to the inner top wall of the drive motor 5 via multiple fixing rods 8, a drive frame 902 fixedly connected to the outer center of the transmission shaft 7, multiple protruding guard plates of the drive frame 902 being movably connected to a mixing rod 903 via bearings, a connecting sleeve 905 fixedly connected to the bottom of the mixing rod 903, two mixing plates 904 fixedly connected to the outer side of the connecting sleeve 905, a driven gear 906 fixedly connected to the top of the mixing rod 903, and a flash reactor 4 fixedly connected to the top side of the mounting base plate 1. The flash reactor 4 is driven by a flash-evaporated graphene preparation system. The outer sides of the multiple driven gears 906 are meshed with the outer sides of the first gear 901, and the drive motor 5 is electrically connected via a controller.

[0035] Specifically, biomass tar first enters a filtration device to remove impurities, preventing them from affecting the subsequent Joule heat treatment and clogging the pipes. The filtered tar then enters the pretreatment reaction tank 2 through the feed pipe 6. At this point, the drive motor 5 is started, causing the transmission shaft 7 to rotate, which in turn causes the drive frame 902 fixed on the transmission shaft 7 to rotate. Since the driven gear 906 meshes with the first gear 901, the driven gear 906 also rotates as the drive frame 902 rotates, thus driving the mixing rod 903 to rotate synchronously. The rotation of the mixing rod 903 further drives the connecting sleeve 905 and the mixing plate 904 to rotate. The mixing plate 904 not only rotates around the center of the tank inside the pretreatment reaction tank 2 but also rotates on its own axis, forming a planetary gear-type stirring structure. This stirring method ensures that the tar is fully mixed and stirred within the pretreatment reaction tank 2, reducing its viscosity and making it a homogeneous liquid raw material, providing high-quality feedstock for subsequent flash evaporation.

[0036] A housing 301 is fixedly connected to the top side of the mounting base plate 1. A vacuum pump 302 is installed on the outside of the housing 301. A vacuum tube 303 is connected to the outside of the housing 301. The end of the vacuum tube 303 away from the housing 301 is connected to the inside of the flash reactor 2.

[0037] Specifically, the mounting base 1 is used to support and fix the various components in the device, providing a position for the installation and fixing of other parts such as the housing 301, ensuring the overall stability and robustness of the device. The housing 301 serves as a mounting carrier, with its outer side used to install the vacuum pump 302, and its interior providing temporary storage space for air, assisting the vacuum pump 302 in better completing its evacuation task. The vacuum pump 302 is connected to the flash reactor 4 through the vacuum pipe 303. Its main function is to establish a negative pressure environment in the pretreatment reaction tank 2, extracting air from the tank, reducing the oxygen content, preventing tar oxidation during pretreatment, and also facilitating subsequent tar vaporization and graphene formation. The vacuum pipe 303 provides a channel for the vacuum pump 302 to extract air from the pretreatment reaction tank 2, ensuring that the gas in the pretreatment reaction tank 2 can be smoothly extracted, thereby reducing the pressure inside the tank.

[0038] A feed pipe 6 is connected to one side of the top of the pretreatment reaction tank 2. The feed pipe 6 is used to feed materials into the interior of the pretreatment reaction tank 2.

[0039] Specifically, the main function of the feed pipe 6 is to safely and stably transport the pre-filtered biomass tar into the pretreatment reactor 2. Through the feed pipe 6, the tar can smoothly enter the pretreatment reactor 2, providing a material basis for subsequent pretreatment operations such as stirring and mixing, ensuring the continuity and efficiency of the entire production process.

[0040] The flash graphene preparation system includes:

[0041] The power supply module, electrically connected to the flash reactor 4, is used to provide high-voltage current for the flash reaction; the power supply module includes a control circuit for adjusting the intensity of the output current and the discharge time.

[0042] Specifically, the power module is electrically connected to flash reactor 4, serving as the power source for the entire flash reaction and providing the necessary high-voltage current. The current intensity and discharge time are crucial factors affecting graphene preparation; therefore, the power module is equipped with a control circuit. This control circuit acts like an intelligent brain, precisely adjusting the output current intensity and discharge time according to preset programs or real-time needs. This ensures that during the flash reaction, the tar undergoes Joule heating under optimal current conditions, efficiently transforming into graphene.

[0043] The temperature control module is used to monitor and regulate the temperature inside the flash reactor 4. The temperature control module includes a temperature sensor and a heating device. The temperature sensor is installed inside the flash reactor 4 to monitor the temperature inside the reactor in real time and transmit the temperature signal to the control unit. The heating device is used to heat the flash reactor 4.

[0044] Specifically, a temperature sensor is installed inside the flash reactor 4 to monitor temperature changes in real time. If a temperature fluctuation occurs, it immediately transmits the signal to the control unit. Based on the received signal, the control unit directs the heating device to heat or adjust the heating power, thereby ensuring that the temperature inside the flash reactor 4 remains within a stable range suitable for graphene formation, providing the optimal temperature environment for graphene formation.

[0045] The vacuum module is connected to the outlet of flash reactor 4 and is used to remove air and reduce the pressure in the reaction system.

[0046] Specifically, the core function of the vacuum module is to remove air from the flash reactor 4, preventing the tar from oxidizing upon contact with oxygen at high temperatures, while also reducing the pressure within the reaction system. This pressure reduction significantly promotes the vaporization of tar and the formation of graphene. During the flash reaction, the vacuum module continuously pumps air, creating a negative pressure environment within the reactor, which facilitates the rapid vaporization and decomposition of tar, thereby improving the efficiency and quality of graphene preparation.

[0047] The gas circulation and purification module is connected to the pretreatment reaction tank 2 and is used to realize gas circulation and purification. The gas circulation and purification module includes a gas circulation pump and a gas purification device. The gas circulation pump is used to circulate the gas in the pretreatment reaction tank 2 to ensure uniform gas distribution, and the gas purification device is used to remove impurity gases generated during the reaction process.

[0048] A gas circulation pump extracts gas from the tank and then evenly pumps it back from the top, ensuring thorough contact between the tar and the inert / reducing atmosphere, resulting in more uniform mixing and reduced viscosity. A gas purification unit (activating, condensing, or catalytic unit) promptly adsorbs or condenses organic impurities, water vapor, and acidic components volatilized from the tar, preventing contamination of subsequent flash evaporation stages and reducing VOC emissions. Continuous air extraction maintains a low-oxygen or anaerobic environment, preventing premature oxidation and polymerization of the tar during pretreatment, thus improving the efficiency of subsequent Joule thermal flash evaporation and the purity of the graphene.

[0049] The control module, along with the pretreatment reaction tank 2, power supply module, temperature control module, vacuum module, and gas circulation and purification module, is used to monitor, acquire, and automatically control the operating parameters of each module in real time.

[0050] Specifically, this module can monitor the operating parameters of each module in real time, such as current intensity, discharge time, temperature, and pressure, and collect and analyze this data. Simultaneously, it also possesses automated control capabilities, sending control signals to each module based on preset programs or real-time monitoring data to coordinate the work between modules and ensure that the entire graphene preparation process proceeds stably and efficiently according to predetermined process requirements, thereby producing high-quality flash-evaporated graphene.

[0051] In summary, this invention achieves efficient resource utilization of biomass tar. Through an innovative flash evaporation graphene preparation technology and supporting system, waste tar is converted into high-value-added graphene materials. These graphene materials form a stable nano-reinforcing network in the cement matrix, significantly improving the compressive strength, crack resistance, and chloride ion penetration resistance of concrete, effectively delaying steel corrosion, and greatly extending the service life of concrete structures. Simultaneously, the system exhibits a high tar conversion rate, significantly improved energy utilization, and substantially reduced operating costs. The device adopts a modular design, occupies a small area, has low maintenance costs, and ensures stable product quality through real-time monitoring and automated control.

[0052] To achieve overall intelligent and automated control of the biomass tar flash-evaporated graphene concrete performance enhancement device, an intelligent control system was added. This intelligent control system includes the following modules:

[0053] Pretreatment control submodule: Based on the information such as tar viscosity and temperature in the pretreatment reaction tank 2 transmitted back by the data acquisition module, it automatically controls the speed and stirring time of the drive motor 5 to achieve the best pretreatment effect on the tar and ensure that its uniformity and fluidity meet the requirements of the subsequent flash evaporation reaction.

[0054] Flash reaction control submodule: Based on preset flash reaction process parameters and real-time data collected from inside the reactor, it precisely controls the output current intensity and discharge time of the power supply module, the heating power of the temperature control module, and the pumping rate of the vacuum module to ensure that the flash reaction proceeds stably and efficiently, thereby improving the yield and quality of graphene.

[0055] Gas circulation and purification control submodule: Real-time monitoring of the operating status of the gas circulation and purification module. Based on parameters such as gas flow rate and impurity content, it automatically adjusts the speed of the gas circulation pump and the working intensity of the gas purification device to ensure uniform distribution and timely purification of gas within the reaction system, thereby reducing the pollution of the environment and the impact of impurity gases on the reaction.

[0056] Equipment linkage submodule: Enables automated linkage control between various devices such as pretreatment reaction tank 2, flash reactor 4, and vacuum pump 302. For example, when the tar in pretreatment reaction tank 2 reaches the predetermined pretreatment level, the conveying device is automatically started to transport the tar to the flash reactor, and the relevant power supply module and temperature control module of the flash reactor are started simultaneously, realizing seamless connection of the entire production process and improving production efficiency.

[0057] Emergency Linkage Submodule: In the event of any abnormal situation during equipment operation, such as excessive temperature, excessive pressure, or leakage, the emergency linkage program can be quickly triggered to automatically shut down the power supply and feeding channel of the relevant equipment, activate the alarm device, and take corresponding safety measures, such as activating the emergency ventilation system and the spray cooling system, to ensure the safety of equipment and personnel.

[0058] Remote monitoring submodule: Through network communication technology, operators can use computers, mobile phones and other terminal devices to view the operating status, various parameters and production data of the equipment in real time from a distance from the equipment site, so as to realize remote monitoring and management of the production process.

[0059] Fault Diagnosis Submodule: Based on a large amount of collected equipment operation data and historical fault cases, it uses data analysis and machine learning algorithms to perform real-time diagnosis and analysis of potential equipment faults, quickly and accurately locate the fault location and cause, provide maintenance personnel with detailed fault information and maintenance suggestions, shorten maintenance time, and reduce equipment downtime losses.

[0060] The operating principle of this intelligent control system is as follows:

[0061] The data acquisition module monitors key components such as the pretreatment reactor 2 and flash reactor 4 in real time, including temperature, pressure, and viscosity, and transmits the data to the control system. Upon receiving this data, the pretreatment control submodule automatically adjusts the speed and stirring time of the drive motor 5 to ensure optimal uniformity and flowability of the tar pretreatment. Subsequently, the flash reactor control submodule precisely regulates the power supply module, temperature control module, and vacuum module based on preset process parameters and real-time data, ensuring stable and efficient flash reactor operation and improving graphene yield and quality. Simultaneously, the gas circulation and purification control submodule monitors gas flow rate and impurity content, automatically adjusting the gas circulation pump and purification device to ensure uniform gas distribution and timely purification, reducing environmental pollution and the impact of impurity gases on the reaction. The equipment linkage submodule enables automated linkage of various devices. For example, when the tar in the pretreatment reactor 2 reaches a predetermined level, the conveying device automatically starts to transport the tar to the flash reactor 4, and related modules are activated simultaneously. The emergency linkage submodule quickly triggers emergency procedures in abnormal situations, shutting off the power and feed channels of related equipment, activating alarm devices, and taking safety measures to ensure the safety of equipment and personnel.

[0062] Furthermore, the remote monitoring submodule, through network communication technology, enables operators to remotely view the equipment's operating status and data. The fault diagnosis submodule, based on operational data and historical cases, diagnoses equipment faults in real time, locates the faulty components, and provides maintenance suggestions. The data analysis and optimization submodule performs in-depth analysis of production data, identifies production bottlenecks, generates optimization solutions, and drives continuous system improvement. The safety management module comprehensively ensures the safe operation of the system through measures such as personnel access control, equipment safety protection, and information security assurance.

[0063] Working principle: The specific steps for using this device are as follows:

[0064] Biomass tar first enters a filtration device to remove large particulate impurities, preventing them from affecting the subsequent Joule heat treatment effect and clogging the pipes.

[0065] The filtered tar enters the pretreatment reaction tank 2 through the feed pipe 6. At this time, the drive motor 5 is started, causing the transmission shaft 7 to rotate, which in turn causes the drive frame 902 fixed on the transmission shaft 7 to rotate. Since the driven gear 906 meshes with the first gear 901, the driven gear 906 also rotates as the drive frame 902 rotates, thus driving the mixing rod 903 to rotate synchronously. The rotation of the mixing rod 903 further drives the connecting sleeve 905 and the mixing plate 904 to rotate. The mixing plate 904 not only rotates around the center of the tank inside the pretreatment reaction tank 2 but also rotates on its own axis. This planetary gear-type stirring structure ensures that the tar is thoroughly and evenly mixed, while reducing its viscosity, providing a uniform liquid feedstock for subsequent flash evaporation.

[0066] The pretreated tar is fed into flash reactor 4 via a conveying device. The flash graphene preparation system begins operation, with the power module providing high-voltage current to flash reactor 4. By controlling parameters such as current intensity and discharge time, the tar is rapidly heated. Within an extremely short time, the tar temperature rises sharply due to the Joule heating effect, undergoing a series of chemical reactions such as cracking, deoxidation, and condensation to form graphene.

[0067] During the flash evaporation reaction, the temperature control module monitors the temperature changes within the flash reactor 4 in real time. The temperature sensor transmits the temperature signal to the control unit. When the temperature exceeds the set range, the control unit adjusts the power of the heating device or the output current of the power supply module to ensure that the reaction temperature remains stable within the optimal range, thus guaranteeing the quality of the graphene.

[0068] Vacuum pump 302 is connected to flash reactor 4 via vacuum pipe 303, continuously evacuating air during the reaction. This not only removes air from the system, preventing oxidation, but also reduces the pressure within the reaction system, which is beneficial for tar vaporization and graphene formation. Simultaneously, the gas circulation pump in the gas circulation and purification module circulates the gas in the pretreatment reaction tank, ensuring uniform gas distribution, while the gas purification device removes impurities generated during the reaction, such as volatile organic compounds in the tar, reducing environmental pollution.

[0069] The control module is connected to the flash reactor 4, power supply module, temperature control module, vacuum module, and gas circulation and purification module via signal lines. Operators can set the operating parameters and programs for each module on the control module's interface, achieving automated control of the entire unit. The control module can monitor the operating status and data of each module in real time and send commands according to preset control logic to coordinate the operation of each module, ensuring stable production and consistent product quality.

[0070] Finally, the generated flash-evaporated graphene is collected from flash reactor 4 using a collection device. This graphene material can be further processed into graphene dispersions for enhancing concrete performance. During concrete mixing, the graphene dispersion is thoroughly mixed with cement, sand, water, and other admixtures in the mixing unit. The graphene is uniformly distributed in the concrete, interacting with cement hydration products to form a dense network structure, thereby significantly improving the concrete's strength, crack resistance, and durability.

[0071] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for enhancing concrete performance using biomass tar flash-evaporated graphene, comprising a mounting base plate (1), characterized in that, A pretreatment reaction tank (2) is fixedly connected to the top center of the mounting base plate (1). A drive motor (5) is installed on the top of the pretreatment reaction tank (2). A transmission shaft (7) is fixedly connected to the output end of the drive motor (5). A first gear (901) is fixedly connected to the inner top wall of the drive motor (5) through multiple fixed rods (8). A drive frame (902) is fixedly connected to the outer center of the transmission shaft (7). A mixing rod (903) is movably connected to multiple protruding guard plates of the drive frame (902) through bearings. A connecting sleeve (905) is fixedly connected to the bottom of the mixing rod (903). Two mixing plates (904) are fixedly connected to the outer side of the connecting sleeve (905). A driven gear (906) is fixedly connected to the top of the mixing rod (903). A flash reactor (4) is fixedly connected to one side of the top of the mounting base plate (1). The flash reactor (4) is driven by a flash graphene preparation system.

2. The concrete performance enhancement device based on biomass tar flash-evaporated graphene according to claim 1, characterized in that, The outer sides of the plurality of driven gears (906) are meshed with the outer side of the first gear (901), and the drive motor (5) is electrically connected through a controller.

3. The concrete performance enhancement device based on biomass tar flash-evaporated graphene according to claim 1, characterized in that, A housing (301) is fixedly connected to the top side of the mounting base plate (1), a vacuum pump (302) is installed on the outside of the housing (301), and a vacuum tube (303) is connected to the outside of the housing (301).

4. The concrete performance enhancement device based on biomass tar flash-evaporated graphene according to claim 3, characterized in that, The end of the vacuum tube (303) away from the housing (301) is connected to the interior of the flash reactor (4).

5. The concrete performance enhancement device based on biomass tar flash-evaporated graphene according to claim 1, characterized in that, The top side of the pretreatment reaction tank (2) is connected to a feed pipe (6), which is used to feed material into the interior of the pretreatment reaction tank (2).

6. The concrete performance enhancement device based on biomass tar flash-evaporated graphene according to claim 1, characterized in that, The flash graphene preparation system includes: The power module is electrically connected to the flash reactor (4) and is used to provide high-voltage current for the flash reaction; A temperature control module is used to monitor and regulate the temperature inside the flash reactor (4); A vacuum module is connected to the outlet of the flash reactor (4) to remove air and reduce the pressure in the reaction system; The control module, together with the pretreatment reaction vessel (2), power supply module, temperature control module, vacuum module and gas circulation and purification module, is used to monitor, collect data and automatically control the operating parameters of each module in real time.

7. The concrete performance enhancement device based on biomass tar flash-evaporated graphene according to claim 6, characterized in that, The power module includes a control circuit for adjusting the intensity of the output current and the discharge time.

8. The concrete performance enhancement device based on biomass tar flash-evaporated graphene according to claim 6, characterized in that, The temperature control module includes a temperature sensor and a heating device. The temperature sensor is installed inside the flash reactor (4) to monitor the temperature inside the reactor in real time and transmit the temperature signal to the control unit. The heating device is used to heat the flash reactor (4).

9. The concrete performance enhancement device based on biomass tar flash-evaporated graphene according to claim 6, characterized in that, The gas circulation and purification module includes a gas circulation pump and a gas purification device. The gas circulation pump is used to circulate the gas in the pretreatment reaction tank (2) to ensure uniform gas distribution. The gas purification device is used to remove impurity gases generated during the reaction process.

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