An environmentally friendly device for drying biochar materials

Abstract

This utility model provides an environmentally friendly device for drying biomass charcoal materials, comprising: a double-bladed hollow drying system, wherein the double-bladed hollow drying system is provided with a first drying chamber, the first drying chamber being provided with a first feed inlet, a first discharge outlet and a first steam interface, the first feed inlet being connected to an external biomass charcoal washing device, and the first steam interface being connected to the steam outlet generated by the pyrolysis gas of a biomass gas boiler; a semi-finished product screw conveyor, wherein the semi-finished product screw conveyor is provided with a conveying chamber, the conveying chamber being provided with a second feed inlet and a second discharge outlet, the first discharge outlet being connected to the second feed inlet; and a flash drying system, wherein the flash drying system is provided with a second drying chamber, the second drying chamber being provided with a third feed inlet and a second steam interface, the third feed inlet being connected to the second discharge outlet. This utility model solves the problem of drying efficiency of traditional charcoal material powder products and the problem of resource utilization of biomass waste.

Description

Technical Field

[0001] This utility model provides an environmentally friendly device for drying biochar materials, belonging to the field of biocharification technology. Background Technology

[0002] In chemical production processes, products often require washing or easily absorb moisture. To maintain dryness, drying equipment is frequently used, such as for biochar materials. Biochar materials have a highly porous structure, allowing them to absorb large amounts of moisture. This means the drying process needs to be sufficiently effective to remove the moisture from these pores. However, biochar materials are mostly in powder form, requiring uniform heating during drying to prevent clumping. Therefore, traditional static heating drying methods are not suitable for drying such powders. Furthermore, traditional static heating drying methods, such as microwave heating, infrared heating, and electric heating, may cause the biochar to reignite, leading to further pyrolysis. Therefore, these methods require strict temperature control.

[0003] With the development of technology, the supply of dry heat sources has become more diversified, but it still relies heavily on natural resources such as oil, coal, and natural gas. The gases emitted from their consumption have a significant impact on the environment. With the development of biomass energy technology, biomass fuel is now being used to replace traditional fuels, which not only meets the demand for heat sources but also avoids the waste of biomass energy. However, there are still bottlenecks in core technologies such as low-cost pretreatment and clean and efficient conversion of agricultural waste, as well as the creation of high-value utilization products. Furthermore, the standards and regulations for resource utilization are not yet sound. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of drying efficiency of traditional carbon material powder products and resource utilization of biomass waste, and to propose an environmentally friendly device for drying biomass carbon materials. The problem to be solved by this utility model is achieved by the following technical solution: an environmentally friendly device for drying biochar materials, comprising: a double-blade hollow drying system, the double-blade hollow drying system being provided with a first drying chamber, the first drying chamber being provided with a first feed inlet, a first discharge outlet and a first steam interface, the first feed inlet being connected to an external biochar washing device, and the first steam interface being connected to the steam outlet generated by the combustion pyrolysis gas of a biomass gas boiler; a semi-finished product screw conveyor, the semi-finished product screw conveyor being provided with a conveying chamber, the conveying chamber being provided with a second feed inlet and a second discharge outlet, the first discharge outlet being connected to the second feed inlet; and a flash drying system, the flash drying system being provided with a second drying... The first drying chamber and the second drying chamber are respectively equipped with a third feed inlet and a second steam interface. The third feed inlet is connected to the second discharge outlet, and the second steam interface is connected to the steam outlet of the biomass gas boiler. The external biomass charcoal washing device feeds the washed biomass charcoal into the first drying chamber through the first feed inlet. The double-blade hollow drying system is used to perform preliminary drying of the biomass charcoal to obtain preliminary dried biomass charcoal. The preliminary dried biomass charcoal enters the semi-finished product screw conveyor through the first discharge outlet. The semi-finished product screw conveyor is used to transport the preliminary dried biomass charcoal to the second drying chamber. The flash drying system is used to crush and dry the preliminary dried biomass charcoal to obtain the biomass charcoal product.

[0005] Furthermore, the dual-blade hollow drying system includes: a raw material screw conveyor, which has a raw material conveying chamber with a raw material inlet and a raw material outlet, the raw material inlet being connected to an external biomass char washing device; a dual-blade hollow dryer, which has a first drying chamber with a steam exhaust port and a condensate exhaust port, the condensate exhaust port being connected to an external condensate collection tank; a first cyclone dust collector, which has a first cyclone inlet and a first cyclone outlet, the first cyclone inlet being connected to the steam exhaust port; an induced draft fan, which has an induced draft inlet and an induced draft outlet, the induced draft inlet being connected to the first cyclone outlet; and a water film dust collector, which has a dust collection inlet, an industrial water inlet, an exhaust gas outlet, and a wastewater outlet, the dust collection inlet being connected to the induced draft outlet, the industrial water inlet being connected to an external industrial water pipe, the wastewater outlet being connected to an external wastewater discharge pipe, and the exhaust gas outlet being connected to an external exhaust gas discharge pipe.

[0006] Furthermore, the dual-blade hollow drying system also includes: a temperature sensor, which is installed on the inner wall of the first drying chamber and is used to detect the internal temperature of the first drying chamber; and a pressure sensor, which is installed at the first steam interface and is used to detect the internal pressure of the first drying chamber. Furthermore, the flash drying system includes: a flash drying device, which is provided with a second drying chamber, and the second drying chamber is provided with a third discharge port; a second cyclone dust collector, which is provided with a second cyclone inlet, a second cyclone outlet and a first biomass char product outlet, and the second cyclone inlet is connected to the third discharge port; a bag filter dust collector, which is provided with a bag filter dust inlet, a bag filter dust outlet and a second biomass char product outlet, the bag filter dust inlet is connected to the second cyclone outlet, and the second biomass char product outlet and the first biomass char product outlet are connected to an external biomass char collection bin; and a flash induced draft fan, which is provided with a flash induced draft air outlet and the flash induced draft air outlet is connected to the bag filter dust outlet.

[0007] Furthermore, the flash drying device includes: a flash dryer, which is equipped with a flash drying chamber; a stirring and dispersing device, which is equipped with a stirring chamber connected to the flash drying chamber, the stirring chamber being equipped with a cooling water inlet, a stirring feed inlet, and a heat exchanger connection port, the cooling water inlet being connected to an external cooling water output device; a feeding screw conveyor, which is equipped with a feeding conveying chamber, the feeding conveying chamber being equipped with a third feed inlet and a screw discharge outlet, the screw discharge outlet being connected to the stirring feed inlet; a finned heat exchanger, which is equipped with a heat exchange inlet, a heat exchange outlet, and a second steam interface, the heat exchange outlet being connected to the heat exchanger connection port; and a flash blower, which is equipped with a flash air outlet connected to the heat exchange inlet.

[0008] Furthermore, the bag filter is also equipped with a compressed air inlet, which is connected to an external compressed air output device.

[0009] The advantages of this invention compared to existing technologies are as follows: This invention provides an environmentally friendly device for drying biomass char materials. An external biomass char washing device washes the biomass char particles produced by the pyrolysis of a biomass gas boiler to obtain biomass char. The biomass char enters the first drying chamber through the first feed inlet. A double-blade hollow drying system performs preliminary drying on the biomass char to obtain pre-dried biomass char. The pre-dried biomass char enters the semi-finished product screw conveyor through the first discharge outlet. The semi-finished product screw conveyor transports the pre-dried biomass char to the second drying chamber. A flash drying system pulverizes and dries the pre-dried biomass char to obtain the biomass char product. This not only meets the heat source requirements but also avoids the waste of biomass energy, enabling full resource utilization of biomass and indirectly reducing greenhouse gas emissions to a significant extent. Attached Figure Description

[0010] Figure 1 This is an overall structural diagram of the first embodiment of an environmental protection device for drying biochar materials according to this utility model.

[0011] Figure 2 This is an overall structural diagram of the first embodiment of the double-blade hollow drying system in an environmental protection device for drying biochar materials according to this utility model.

[0012] Figure 3 This is an overall structural diagram of the first embodiment of the flash drying system in an environmental protection device for drying biochar materials according to this utility model.

[0013] Figure 4 This is an overall structural diagram of the first embodiment of the flash drying device in an environmental protection equipment for drying biochar materials according to this utility model.

[0014] Among them, 1-flash drying system, 2-semi-finished product screw conveyor, 3-double-blade hollow drying system, 11-flash drying device, 12-second cyclone dust collector, 13-bag dust collector, 14-flash induced draft fan, 111-flash blower, 112-finned heat exchanger, 113-feed screw conveyor, 114-mixing and dispersing device, 115-flash dryer, 31-raw material screw conveyor, 32-double-blade hollow dryer, 33-first cyclone dust collector, 34-induced draft fan, 35-water film dust collector. Detailed Implementation

[0015] The following is based on the appendix Figures 1-4 Further explanation of this utility model: The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] like Figure 1 As shown, the first embodiment of this utility model provides an environmentally friendly device for drying biochar materials based on the prior art, including: a double-bladed hollow drying system 3, a semi-finished product screw conveyor 2, and a flash drying system 1. The double-bladed hollow drying system 3 is provided with a first drying chamber, which is provided with a first inlet, a first outlet, and a first steam interface. The first inlet is connected to the outlet of an external biochar washing device, and the first steam interface is connected to the steam outlet of a biomass gas boiler. The semi-finished product screw conveyor 2 is provided with a conveying chamber, which is provided with a second inlet and a second outlet, and the first outlet is connected to the second inlet. The flash drying system 1 is provided with a second drying chamber, which is provided with a third inlet and a second outlet. The system includes a feed inlet and a second steam interface, a third feed inlet connected to the second discharge outlet, and a second steam interface connected to the steam outlet of the biomass gas boiler. An external biomass char washing device is used to wash the biomass char particles produced by the pyrolysis of the biomass gas boiler to obtain biomass char. The biomass char enters the first drying chamber through the first feed inlet. A double-bladed hollow drying system 3 is used to perform preliminary drying of the biomass char to obtain pre-dried biomass char. The pre-dried biomass char enters the semi-finished product screw conveyor 2 through the first discharge outlet. The semi-finished product screw conveyor 2 is used to transport the pre-dried biomass char to the second drying chamber. A flash drying system 1 is used to pulverize and dry the pre-dried biomass char to obtain the biomass char product.

[0019] In this embodiment, the steam interfaces of both the double-bladed hollow drying system 3 and the flash drying system 1 are connected to the steam outlet of the biomass gas boiler. This allows for full utilization of the steam generated by the biomass gas boiler as a heat source, meeting the heat demand during the drying process, avoiding energy waste, and improving energy utilization efficiency. Through a reasonable system setup, the biomass char particles produced by the pyrolysis of the biomass gas boiler are washed and dried, ensuring full utilization of the biomass char, avoiding waste of biomass energy, and achieving full resource utilization of biomass.

[0020] By fully utilizing biomass energy, the reliance on traditional energy sources is indirectly and significantly reduced, thereby decreasing greenhouse gas emissions generated during the use of traditional energy and resulting in significant environmental benefits. A dual-blade hollow drying system 3 is used for initial drying, followed by the semi-finished product being conveyed to a flash drying system 1 via a screw conveyor 2 for further pulverization and drying. This step-by-step drying process design is reasonable, improving the drying quality and efficiency of biomass charcoal and ultimately yielding a qualified biomass charcoal product. The systems are tightly connected via inlets and outlets, with the semi-finished product screw conveyor 2 providing excellent connectivity, ensuring a continuous and smooth drying process. The compact equipment layout contributes to improved production efficiency and space utilization. The flash drying system not only dries the pre-dried biomass charcoal but also pulverizes it, integrating multiple functions to simplify the production process and reduce equipment footprint and investment costs.

[0021] Furthermore, such as Figure 2 As shown, the double-blade hollow drying system 3 includes: a raw material screw conveyor 31, a double-blade hollow dryer 32, a first cyclone dust collector 33, an induced draft fan 34, and a water film dust collector 35. The raw material screw conveyor 31 is provided with a raw material conveying chamber, which has a raw material inlet and a raw material outlet. The raw material inlet is connected to an external biochar washing device. The double-blade hollow dryer 32 is provided with a first drying chamber, which has a steam outlet and a condensate outlet. The condensate outlet is connected to an external condensate collection system. The tank is connected; the first cyclone dust collector 33 is provided with a first cyclone inlet and a first cyclone outlet, the first cyclone inlet is connected to the water vapor emission port, the induced draft fan 34 is provided with an induced draft inlet and an induced draft outlet, the induced draft inlet is connected to the first cyclone outlet, the water film dust collector 35 is provided with a dust removal inlet, an industrial water inlet, an exhaust gas emission outlet and a wastewater emission outlet, the dust removal inlet is connected to the induced draft outlet, the industrial water inlet is connected to an external industrial water pipe, the wastewater emission outlet is connected to an external wastewater discharge pipe, and the exhaust gas emission outlet is connected to an external exhaust gas emission pipe.

[0022] In this embodiment, the raw material screw conveyor 31 stably transports the biomass char processed by the external biomass char washing device to the double-paddle hollow dryer 32, ensuring the continuity and stability of the raw material supply during the drying process and helping to improve the overall efficiency of the drying system. The double-paddle hollow dryer 32 has a dedicated first drying chamber for targeted drying of the biomass char. Its steam and condensate outlets promptly discharge the steam and condensate generated during the drying process, ensuring a proper drying environment within the drying chamber. This improves drying efficiency and quality, ensuring the biomass char reaches the ideal degree of dryness.

[0023] The application of the first cyclone dust collector 33 effectively separates larger dust particles carried in the water vapor generated during the drying process through centrifugal force, reducing the dust load on subsequent equipment, improving the system's initial dust treatment capacity, and facilitating the normal operation of subsequent equipment and extending its service life. The induced draft fan 34 provides the necessary power for gas flow within the system, ensuring that water vapor and dust can smoothly pass from the double-blade hollow dryer 32 through the first cyclone dust collector 33, water film dust collector 35, and other equipment for treatment, ensuring smooth gas circulation throughout the drying system and allowing the drying and purification process to continue continuously. The water film dust collector 35, connected to an external industrial water pipe, introduces industrial water to further purify the gas after the initial treatment by the first cyclone dust collector 33. It removes residual fine dust and other impurities from the gas, reducing the pollutant content in the exhaust gas. The treated exhaust gas is discharged compliantly through the exhaust gas outlet, and wastewater is discharged into an external wastewater discharge pipe through the wastewater outlet, achieving reasonable treatment of exhaust gas and wastewater, reducing environmental pollution, and providing good environmental benefits.

[0024] The various devices in the double-blade hollow drying system 3 are rationally connected through corresponding inlets and outlets. From raw material transportation, drying, dust separation to gas purification, they work closely together to form a complete and orderly process flow, ensuring the efficient operation and stable functioning of the entire double-blade hollow drying system 3.

[0025] Furthermore, the dual-blade hollow drying system 3 also includes a temperature sensor and a pressure sensor. The temperature sensor is installed on the inner wall of the first drying chamber and is used to detect the internal temperature of the first drying chamber. The temperature sensor monitors the internal temperature of the first drying chamber in real time, allowing operators to accurately grasp the temperature changes within the drying chamber. This helps ensure that the biochar is dried under suitable temperature conditions, avoiding degradation of biochar quality or safety accidents due to excessively high temperatures, and also preventing low drying efficiency due to excessively low temperatures, thus ensuring the stability of drying effect and product quality.

[0026] A pressure sensor is installed at the first steam inlet to detect the internal pressure of the first drying chamber. The pressure sensor monitors the internal pressure of the first drying chamber in real time, allowing for the timely detection of abnormal pressure fluctuations. A normal pressure environment is crucial for the drying process; excessive pressure may damage the equipment, while insufficient pressure may affect drying efficiency and effectiveness. Accurate pressure monitoring effectively ensures the safe and stable operation of the drying system.

[0027] The data collected by temperature and pressure sensors provides crucial information for the automated control of the drying system. Based on this real-time data, the system can automatically adjust relevant parameters, such as heating power, feeding speed, or ventilation volume, through automated devices to maintain the drying chamber at optimal temperature and pressure, reducing manual intervention and improving the automation level and production efficiency of the process. The sensors continuously monitor temperature and pressure; if any values ​​exceed the normal range, the system can immediately issue an alarm, reminding operators to take timely measures to prevent further escalation of the fault. Simultaneously, the automated control system can also automatically take corresponding protective measures according to preset safety strategies, such as stopping equipment operation or cutting off relevant energy supplies, to ensure equipment and personnel safety and reduce production risks.

[0028] like Figure 3 As shown, the flash drying system 1 includes: a flash drying device 11, a second cyclone dust collector 12, a bag filter dust collector 13, and a flash induced draft fan 14. The flash drying device 11 is provided with a second drying chamber, and the second drying chamber is provided with a third discharge port. The second cyclone dust collector 12 is provided with a second cyclone inlet, a second cyclone outlet, and a first biomass char product outlet. The second cyclone inlet is connected to the third discharge port. The bag filter dust collector 13 is provided with a bag filter dust inlet, a bag filter dust outlet, and a second biomass char product outlet. The bag filter dust inlet is connected to the second cyclone outlet. The second biomass char product outlet and the first biomass char product outlet are connected to the external biomass char collection bin. The flash induced draft fan 14 is provided with a flash induced draft port, and the flash induced draft port is connected to the bag filter dust outlet. In this embodiment, the second drying chamber of the flash drying device 11 can efficiently dry and pulverize the pre-dried biochar, enabling it to reach the required dryness and particle size in a short time, thus improving production efficiency and product quality. A combination of a second cyclone dust collector 12 and a bag filter 13 is used for multi-stage dust separation. The second cyclone dust collector 12 first separates larger dust particles generated during the drying process, reducing the load on the subsequent bag filter 13 and improving dust separation efficiency. The bag filter 13 further captures fine dust. Both the second cyclone dust collector 12 and the bag filter 13 have biochar product outlets and are connected to an external biochar collection silo, facilitating the direct collection of the separated biochar product into the silo. This enables convenient collection and storage of the dried product, which is beneficial for subsequent packaging and transportation processes. The flash evaporation fan 14 provides power to the airflow in the flash drying system 1, ensuring that the gas generated during the drying process can pass smoothly through each piece of equipment, maintaining the airflow balance and stability in the system, and ensuring the normal operation of the drying and dust separation process.

[0029] In the flash drying system 1, the various devices are closely connected and arranged in a compact manner. From the flash drying device 11 to the second cyclone dust collector 12, the bag dust collector 13 and the flash induced draft fan 14, the material and airflow between the devices are smoothly transferred, which reduces the floor space, improves the space utilization rate, and is conducive to the rational layout and operation of the entire production system. like Figure 4 As shown, the flash drying device 11 includes: a flash dryer 115, a stirring and dispersing device 114, a feeding screw conveyor 113, a finned heat exchanger 112, and a flash blower 111. The flash dryer 115 is provided with a flash drying chamber, the stirring and dispersing device 114 is provided with a stirring chamber, the stirring chamber is connected to the flash drying chamber, the stirring chamber is provided with a cooling water inlet, a stirring feed inlet and a heat exchanger connection port, the cooling water inlet is connected to an external cooling water output device, the feeding screw conveyor 113 is provided with a feeding conveying chamber, the feeding conveying chamber is provided with a third feed inlet and a screw discharge outlet, the screw discharge outlet is connected to the stirring feed inlet, the finned heat exchanger 112 is provided with a heat exchange inlet, a heat exchange outlet and a second steam interface, the heat exchange outlet is connected to the heat exchanger connection port, the flash blower 111 is provided with a flash air outlet, the flash air outlet is connected to the heat exchange inlet, and the water vapor generated by the finned heat exchanger 112 is connected to an external condensate collection tank.

[0030] In this embodiment, the flash drying chamber of the flash dryer 115 is paired with a mixing and dispersing device 114. The mixing and dispersing device 114 thoroughly mixes and disperses the incoming material, giving it a larger specific surface area within the flash drying chamber and allowing for full contact with hot air. This achieves efficient drying, shortens drying time, and improves drying efficiency. The mixing and dispersing device 114 continuously mixes the material, effectively preventing the biochar particles from agglomerating during drying and ensuring the material dries in a uniform state, thus improving product quality and stability. The mixing chamber is equipped with a cooling water inlet connected to an external cooling water outlet, which cools the mixing and dispersing device 114, preventing overheating due to friction or heat transfer during prolonged operation, extending the equipment's lifespan, and avoiding adverse effects on material quality from overheating. The feeding screw conveyor 113 stably transports the material to the mixing chamber of the mixing and dispersing device 114. By controlling parameters such as the screw conveyor's rotation speed, the feed rate can be precisely controlled, ensuring the stability and continuity of the drying process. The finned heat exchanger 112 effectively utilizes the heat of steam. Air is blown into the heat exchanger by the flash blower 111, and the heated air enters the flash drying chamber, providing the necessary heat for the drying process. The finned heat exchanger 112 increases the heat exchange area, enhances the heat exchange effect, improves energy utilization, and reduces energy consumption. The flash blower 111 provides the airflow power required for drying, ensuring a reasonable airflow organization within the flash drying chamber, guaranteeing uniform heating of the material during the drying process, further improving drying efficiency and product quality consistency.

[0031] Furthermore, the baghouse dust collector 13 is also equipped with a compressed air inlet, which is connected to an external compressed air output device. Compressed air has a strong impact force; by introducing external compressed air through the inlet, dust adhering to the surface of the filter bags can be quickly and effectively removed. Compared to other cleaning methods, compressed air cleaning can restore the filter bags' filtration performance in a short time, ensuring the dust collector's continuous and efficient operation and maintaining stable airflow and good ventilation within the system. Timely removal of dust deposits on the filter bags prevents long-term dust accumulation from causing wear, blockage, and other damage, thereby extending the filter bag's service life, reducing the frequency of bag replacement, and lowering equipment maintenance costs. If dust on the filter bags is not removed in time, it will increase the resistance of the dust collector, affecting the normal operation of the system. Regular compressed air cleaning maintains the dust collector's low-resistance operation, ensuring the stable operation of the entire flash drying system 1 and improving production efficiency.

[0032] When steam supply is insufficient, electric heating intervenes as a supplementary energy source to prevent production interruptions due to heat shortages. This dual-energy supply mode greatly enhances the system's ability to cope with energy fluctuations, ensuring that chemical production is not limited by steam availability, maintaining a stable production rhythm, and improving production efficiency and economic benefits.

[0033] By centralizing all motor operating status, pressure monitoring data, and temperature monitoring information in the control cabinet, a high degree of integration and centralized management of equipment operating data is achieved. Operators can monitor all key system parameters in real time on a single interface, reducing management costs and the risk of human error caused by decentralized operations, and improving the safety and reliability of system operation.

[0034] Based on the integrated analysis of various data by the control cabinet, process parameters can be flexibly and precisely adjusted according to the characteristics of different drying materials, such as humidity, particle size, and heat sensitivity. Whether adjusting heating power, drying time, or optimizing airflow speed, customized production can be achieved to meet diverse production needs and ensure the stability and consistency of product quality.

[0035] The integrated design of the control cabinet makes equipment maintenance, repair, and troubleshooting more convenient and efficient. Staff can quickly locate problems and view historical equipment operating data through the control cabinet, providing strong evidence for fault diagnosis and equipment performance optimization, reducing downtime and maintenance costs.

[0036] Although embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. Other modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

Claims

1. An environmentally friendly device for drying biochar materials, characterized in that, include: A double-bladed hollow drying system (3) is provided with a first drying chamber, which is provided with a first feed inlet, a first discharge outlet and a first steam interface. The first feed inlet is connected to the discharge outlet of an external biomass charcoal washing device, and the first steam interface is connected to the steam outlet of a biomass gas boiler. A semi-finished product screw conveyor (2) is provided with a conveying chamber, which is provided with a second feed inlet and a second discharge outlet. The first discharge outlet is connected to the second feed inlet. A flash drying system (1) is provided with a second drying chamber, which is provided with a third feed inlet and a second steam interface. The third feed inlet is connected to the second discharge outlet. The second steam interface is connected to the steam outlet of the biomass gas boiler; wherein, the external biomass char washing device is used to wash the biomass char particles generated by the pyrolysis of the biomass gas boiler to obtain biomass char, the biomass char enters the first drying chamber through the first feed port, the double-blade hollow drying system is used to perform preliminary drying on the biomass char to obtain preliminary dried biomass char, the preliminary dried biomass char enters the semi-finished product screw conveyor (2) through the first discharge port, the semi-finished product screw conveyor (2) is used to transport the preliminary dried biomass char to the second drying chamber, and the flash drying system (1) is used to crush and dry the preliminary dried biomass char to obtain biomass char product.

2. The environmental protection equipment for drying biochar materials according to claim 1, characterized in that, The double-blade hollow drying system (3) includes: a raw material screw conveyor (31), which is provided with a raw material conveying chamber, which is provided with a raw material inlet and a raw material outlet, and the raw material inlet is connected to the external biochar washing device; a double-blade hollow dryer (32), which is provided with a first drying chamber, which is provided with a water vapor discharge port and a condensate discharge port, and the condensate discharge port is connected to an external condensate collection tank; and a first cyclone dust collector (33), which is provided with... The device is equipped with a first cyclone inlet and a first cyclone outlet, the first cyclone inlet being connected to the water vapor discharge port; an induced draft fan (34), the induced draft fan (34) being equipped with an induced draft inlet and an induced draft outlet, the induced draft inlet being connected to the first cyclone outlet; and a water film dust collector (35), the water film dust collector (35) being equipped with a dust removal inlet, an industrial water inlet, a waste gas discharge outlet and a wastewater discharge outlet, the dust removal inlet being connected to the induced draft outlet, the industrial water inlet being connected to an external industrial water pipe, the wastewater discharge outlet being connected to an external wastewater discharge pipe, and the waste gas discharge outlet being connected to an external waste gas discharge pipe.

3. The environmental protection equipment for drying biochar materials according to claim 2, characterized in that, The dual-blade hollow drying system (3) further includes: a temperature sensor, which is installed on the inner wall of the first drying chamber and is used to detect the internal temperature of the first drying chamber; and a pressure sensor, which is installed at the first steam interface and is used to detect the internal pressure of the first drying chamber.

4. The environmental protection equipment for drying biochar materials according to claim 2 or 3, characterized in that, The flash drying system (1) includes: a flash drying device (11), which is provided with a second drying chamber and a third discharge port respectively; a second cyclone dust collector (12), which is provided with a second cyclone inlet, a second cyclone outlet and a first biomass char product outlet, and the second cyclone inlet is connected to the third discharge port; a bag filter dust collector (13), which is provided with a bag filter dust inlet, a bag filter dust outlet and a second biomass char product outlet, the bag filter dust inlet is connected to the second cyclone outlet, and the second biomass char product outlet and the first biomass char product outlet are connected to the external biomass char collection bin; and a flash induced draft fan (14), which is provided with a flash induced draft air outlet and the flash induced draft air outlet is connected to the bag filter dust outlet.

5. The environmental protection equipment for drying biochar materials according to claim 4, characterized in that, The flash drying device (11) includes: a flash dryer (115), which is provided with a flash drying chamber; a stirring and dispersing device (114), which is provided with a stirring chamber, which is connected to the flash drying chamber, and the stirring chamber is provided with a cooling water inlet, a stirring feed inlet and a heat exchanger connection port, and the cooling water inlet is connected to an external cooling water output device; and a feeding screw conveyor (113). 3) A feeding conveying chamber is provided, wherein the feeding conveying chamber is provided with the third feeding port and the spiral discharge port, and the spiral discharge port is connected to the stirring feeding port; a finned heat exchanger (112) is provided with a heat exchange inlet, a heat exchange outlet and a second steam interface, and the heat exchange outlet is connected to the heat exchanger connection port; a flash blower (111) is provided with a flash blower port, and the flash blower port is connected to the heat exchange inlet.

6. The environmental protection equipment for drying biochar materials according to claim 5, characterized in that, The bag filter (13) is also provided with a compressed air inlet, which is connected to an external compressed air output device.

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