Mine transport vehicle CO tail gas treatment system and CO ablation block preparation method

Abstract

The invention relates to the technical field of underground auxiliary transport vehicles, and discloses a mine transport vehicle CO tail gas treatment system, which comprises a tail gas connecting pipe, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, the water storage tank is arranged at the end part of the other side of the tail gas connecting pipe and is communicated with the tail gas connecting pipe, and the water storage tank is filled with water; the partition plate assembly is arranged on the inner side of the water storage tank and used for dividing the interior of the water storage tank into a specific path; the fire-retardant drying communicating piece is arranged on the water storage tank, communicates with the water storage tank and is used for fire-retardant and drying of the tail gas; and the CO ablating agent storage tank is arranged on the fire-retardant drying communicating piece and communicates with the fire-retardant drying communicating piece. The CO tail gas treatment system of the mine transport vehicle and the preparation method of the CO ablation block aim at effectively reducing the CO content in tail gas of the mine transport vehicle, improving the air quality in a mine and guaranteeing the health and safety of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary transport vehicles in mines, and in particular to a CO tail gas treatment system for mine transport vehicles and a method for preparing a CO ablation block. Background Art

[0002] With the vigorous development of industry and mining, rubber-tyred trackless vehicles are increasingly widely used in mines and industrial transportation due to their excellent efficiency and flexibility, becoming an important force in promoting the improvement of production efficiency. However, behind this high efficiency are hidden environmental and health risks that cannot be ignored. During the operation of rubber-tyred trackless vehicles, the exhaust gas produced by engine combustion contains a large amount of pollutants, especially carbon monoxide (CO), which is a colorless, odorless, non-irritating toxic gas. In a relatively closed mine environment, the accumulation of CO not only seriously deteriorates the air quality and causes a decrease in oxygen content, but may also cause personnel poisoning incidents, posing a direct threat to the life safety of miners. Long-term exposure to high-concentration CO environments may also cause health problems such as nervous system damage and cardiopulmonary dysfunction, which seriously affect work efficiency and physical health. Therefore, effectively controlling the exhaust emissions of rubber-tyred trackless vehicles, especially reducing CO emissions, has become a key issue that needs to be urgently addressed in the fields of mines and industrial transportation.

[0003] At present, as the main force of mine and industrial transportation, the exhaust emission problem of rubber-tyred trackless vehicles is becoming increasingly prominent, especially the CO content is often far beyond the safety standard, which poses a severe challenge to the health and safety of workers in the mine. The existing technology has significant defects in treating the CO exhaust of rubber-tyred trackless vehicles. On the one hand, although traditional exhaust purification devices, such as three-way catalytic converters, can reduce CO emissions to a certain extent, their purification efficiency is often difficult to guarantee for high-efficiency and high-load operation under specific working conditions such as rubber-tyred trackless vehicles. Especially in the special environment of mines, the catalyst is prone to failure, the maintenance cost is high, and the replacement is frequent. On the other hand, the existing CO exhaust treatment devices are often bulky and complex to install, which not only increases the vehicle's own weight and affects the vehicle's flexibility and load-bearing capacity, but also is inconvenient to operate in the narrow space of mines, limiting its wide application. Summary of the invention

[0004] The purpose of the present invention is to effectively reduce the CO content in the exhaust gas of a mine transport vehicle, improve the air quality in the mine, and ensure the health and safety of the workers, and a CO exhaust gas treatment system for a mine transport vehicle and a method for preparing a CO ablation block are proposed.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A CO tail gas treatment system for a mine transport vehicle, comprising:

[0007] An exhaust gas connecting pipe, which is in communication with an exhaust port of the engine;

[0008] A water storage tank is disposed on the other end of the tail gas connecting pipe and is in communication with the tail gas connecting pipe, wherein the water storage tank is filled with water;

[0009] A partition assembly is arranged inside the water storage tank and is used to partition the inside of the water storage tank into a specific path;

[0010] The fire-blocking and drying connecting piece is arranged on the water storage tank and is connected with the water storage tank, and is used for fire-blocking and drying the tail gas;

[0011] A CO ablation agent storage tank is arranged on the fire-retardant dry connecting piece and is interconnected with the fire-retardant dry connecting piece, wherein the fire-retardant dry connecting piece is used to connect the water storage tank and the CO ablation agent storage tank together, and a CO ablation block is also arranged in the CO ablation agent storage tank to remove carbon monoxide in the exhaust gas;

[0012] The exhaust gas discharge pipe is arranged on the CO ablative agent storage tank and is interconnected with the CO ablative agent storage tank.

[0013] Based on the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, the CO ablation block is a solid structure having a plurality of interconnected channels or holes to form a honeycomb structure. The surface of the CO ablation block is coated with or adsorbed with a CO ablation agent, which can be released or activated under specific conditions to react with CO to achieve ablation or removal of CO.

[0015] Furthermore, a filter for blocking particulate matter in the exhaust gas is provided on the inner side of the exhaust gas connecting pipe, wherein a first one-way valve located downstream of the filter is also provided on the inner side of the exhaust gas connecting pipe, and the exhaust gas in the engine exhaust port can flow to the inner side of the water storage tank through the first one-way valve.

[0016] Furthermore, the water tank is also provided with a metal float with one end penetrating through and extending to the outside of the water tank, wherein the end of the metal float located inside the water tank is in contact with the liquid level plane of the water tank, and a scale is also provided on the metal float.

[0017] Furthermore, the partition assembly includes:

[0018] An L-shaped baffle, which is arranged in an L-shape as a whole, wherein the vertical end of the L-shaped baffle is fixedly installed on the inner side of the water storage tank, and the horizontal end of the L-shaped baffle is sunk in the water in the water storage tank, which is used to prevent the exhaust gas from floating up; and

[0019] A straight partition, one end of which is fixedly installed on the inner side of the water tank, wherein the end of the straight partition away from the inner wall of the water tank is higher than the horizontal end of the L-shaped partition and the liquid level plane, and there is a certain distance between the L-shaped partition and the straight partition, wherein the distance between the L-shaped partition and the straight partition is the exhaust gas circulation area.

[0020] Furthermore, the fire-retardant drying connecting piece includes:

[0021] A metal pipe, one end of which is connected to the water storage tank, and the other end of which is connected to the CO ablation agent storage tank;

[0022] A fire-blocking grille is fixedly mounted on the inner side of the metal pipe, wherein the outer wall of the fire-blocking grille is in contact with the inner wall of the metal pipe; and

[0023] The silica gel desiccant is arranged inside the metal pipe and downstream of the fire-blocking grille.

[0024] Furthermore, a second one-way valve is provided on the inner side of the metal pipe and the exhaust gas emission pipe, wherein the exhaust gas in the water storage tank can flow to the outer side of the exhaust gas emission pipe through the second one-way valve.

[0025] Furthermore, the water tank and the CO ablation agent tank are both cylindrical, wherein the water tank is composed of two cylinders with a C-shaped cross-section, the end of the metal pipe away from the water tank is interconnected with one of the cylinders, and the other cylinder is interconnected with the exhaust pipe, and the two cylinders are detachably connected.

[0026] A method for preparing a CO ablation block comprises the following steps:

[0027] S10, pre-treating activated carbon: placing the activated carbon in a desorption tank, introducing desorption steam from the top of the desorption tank, heating the activated carbon to remove impurities and gases adsorbed on the surface of the activated carbon, and after desorption, blowing air into the desorption tank to reduce the temperature of the activated carbon to a safe removal range, taking out the cooled activated carbon, and placing it in a vacuum box for drying until the activated carbon is dry;

[0028] S20, molding treatment: put the pre-treated activated carbon into a special mold, and knead it by applying external force to form a honeycomb block in the mold. According to actual needs, molds of different shapes and sizes are selected to produce activated carbon shapes that meet the requirements of various ventilation ducts;

[0029] S30, preparing ablative agent slurry: mixing the Cu-Mn-Sn water-resistant ablative agent with the vanadium-based strong hydrophobic material (Ni@ZnV2O4-ZnO), ensuring that the ablative agent and the hydrophobic material are evenly mixed to form the desired slurry;

[0030] S40, loading the ablation agent and drying: completely immerse the activated carbon honeycomb block obtained in step S20 into the slurry prepared in step S30, ensuring that the surface of the activated carbon block is evenly covered with a layer of slurry, take the impregnated activated carbon block out of the slurry, and place it in a static state for a period of time to allow the slurry to fully penetrate into the activated carbon and solidify; place the activated carbon block after standing in a drying device, and dry it at a temperature of 110°C until the slurry is completely dry and firmly attached to the activated carbon block, thereby obtaining an activated carbon carrier loaded with the CO ablation agent, i.e., a CO ablation block.

[0031] Furthermore, in the process of pre-treating the activated carbon in step S10, after the desorption steam heating treatment and before the purge air cooling, the activated carbon in the desorption tank is intermittently or continuously ultrasonically treated with ultrasound to further enhance the cleanliness of the activated carbon surface and the permeability of the pore structure. In the molding process of step S20, an adjustable mold system is used, which allows the size and shape of the mold to be fine-tuned according to actual needs during the molding process without replacing the entire mold. In addition, a microporous structure is designed inside the mold to promote the uniform distribution and penetration of the slurry in the activated carbon block. When preparing the ablative agent slurry in step S30, in addition to the basic Cu-Mn-Sn water-resistant ablative agent and vanadium-based strong hydrophobic material, a certain amount of nano- Grade inorganic fillers such as silica, alumina, etc. and / or surfactants are added to improve the fluidity and wettability of the slurry. In the process of loading the ablation agent and drying in step S40, vacuum impregnation technology is used instead of conventional impregnation, that is, a negative pressure environment is introduced during the impregnation process to promote the slurry to penetrate deeper into the activated carbon. In addition, a step-by-step heating strategy is adopted in the drying stage, first pre-drying at a lower temperature such as 60-80°C, and then thoroughly drying at a high temperature of 110°C to reduce the internal stress that may be generated during the drying process. After step S40, the CO ablation block is subjected to surface coating treatment to enhance its corrosion resistance, or performance tests such as CO adsorption-desorption cycle test and long-term stability test are performed to ensure that the product meets the established performance indicators.

[0032] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0033] The present invention is directly connected to the engine exhaust port through the exhaust gas connecting pipe, which ensures that the exhaust gas can enter the treatment system efficiently and unimpeded. The setting of the water storage tank not only provides a cooling and preliminary purification environment for the exhaust gas, but also increases the residence time of the exhaust gas in the water storage tank through the specific path formed by the baffle assembly, which is beneficial to the dissolution and precipitation of some harmful substances in the exhaust gas, and especially can absorb part of the heat in the exhaust gas, reduce the exhaust gas temperature, and create favorable conditions for subsequent treatment steps. Secondly, the design of the fire-retardant drying connecting piece not only prevents sparks that may be carried in the exhaust gas from entering the subsequent treatment unit and prevents the occurrence of fire accidents, but also removes moisture in the exhaust gas through its drying function, avoids the influence of moisture on the effect of subsequent ablation agent, and ensures the efficient operation of the CO ablation block. Furthermore, the CO ablation block arranged in the CO ablation agent storage tank is different from the prior art Compared with the three-way catalytic converter and other devices in the process, the CO ablation block has a higher CO purification efficiency, is not easy to fail, and has a lower maintenance cost. It uses a specific ablation agent to react chemically with the CO in the exhaust gas to convert it into a harmless substance, thereby significantly reducing the CO content in the exhaust gas. In addition, the CO ablation block is relatively small in size and easy to install. It will not increase the vehicle's own weight, nor will it affect the vehicle's flexibility and load-carrying capacity. It is very suitable for use in limited space environments such as mines. Finally, the setting of the exhaust pipe ensures that the purified exhaust gas can be discharged smoothly and will not cause secondary pollution to the air quality in the mine. The entire system has a compact structure and is easy to operate. It not only improves the efficiency of exhaust gas treatment, but also reduces operating costs and maintenance difficulties, providing a new, more efficient and economical solution for exhaust gas treatment of mine transport vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall connection structure of a CO tail gas treatment system for a mine transport vehicle according to the present invention;

[0035] Figure 2 The present invention is a method flow chart of a method for preparing a CO ablation block.

[0036] In the figure: 1. exhaust gas connecting pipe; 2. water storage tank; 3. partition assembly; 31. L-shaped partition; 32. straight partition; 4. fire-blocking and drying connecting piece; 41. metal pipe; 42. fire-blocking grille; 43. silica gel desiccant; 5. CO ablation agent storage tank; 6. CO ablation block; 7. exhaust gas discharge pipe; 8. filter; 9. first one-way valve; 10. metal float; 11. scale; 12. second one-way valve. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Combination Figure 1 As shown, a CO tail gas treatment system for a mine transport vehicle of the present invention comprises:

[0039] An exhaust gas connecting pipe 1, which is connected to the engine exhaust port;

[0040] A water storage tank 2 is disposed on the other end of the exhaust gas connecting pipe 1 and is in communication with the exhaust gas connecting pipe 1, wherein the water storage tank 2 is filled with water;

[0041] The partition assembly 3 is arranged inside the water storage tank 2 and is used to partition the inside of the water storage tank 2 into a specific path;

[0042] The fire-retardant and drying connecting piece 4 is arranged on the water storage tank 2 and is in communication with the water storage tank 2, and is used for fire-retardant and drying the exhaust gas;

[0043] The CO ablation agent storage tank 5 is arranged on the fire-retardant dry connecting piece 4 and is interconnected with the fire-retardant dry connecting piece 4, wherein the fire-retardant dry connecting piece 4 is used to connect the water storage tank 2 and the CO ablation agent storage tank 5 together, and a CO ablation block 6 is also arranged in the CO ablation agent storage tank 5 to remove carbon monoxide in the exhaust gas;

[0044] The tail gas exhaust pipe 7 is disposed on the CO ablative agent storage tank 5 and is interconnected with the CO ablative agent storage tank 5 .

[0045] The exhaust gas containing CO generated by the engine of the mine transport vehicle during operation is first introduced into the system through the exhaust gas connecting pipe 1. The other end of the exhaust gas connecting pipe 1 is interconnected with the water tank 2, so that the exhaust gas can smoothly enter the water tank 2. Water is pre-filled inside the water tank 2. After the exhaust gas contacts with water, some harmful substances such as particulate matter and some soluble gases will be absorbed or dissolved by the water, and the exhaust gas is also cooled to a certain extent. In addition, the partition assembly 3 in the water tank 2 divides the inside of the water tank 2 into specific paths, which increases the residence time of the exhaust gas in the water tank 2 and the area of ​​contact with water, thereby improving the purification effect of the exhaust gas. The exhaust gas after preliminary purification by the water tank 2 then enters the next treatment stage through the fire-retardant drying connecting piece 4. The fire-retardant drying connecting piece The main function of 4 is to prevent sparks that may be carried in the exhaust gas from entering the subsequent processing unit to avoid causing fire accidents. At the same time, it also has a drying function, which can remove moisture from the exhaust gas and ensure the efficient operation of the subsequent CO ablation block 6. After the exhaust gas enters the CO ablation agent storage tank 5, it comes into contact with the CO ablation block 6 therein. The CO ablation block 6 is the core component of the system. It uses a specific ablation agent to react chemically with the CO in the exhaust gas to convert it into a harmless substance. This step significantly reduces the CO content in the exhaust gas and improves the purification efficiency of the exhaust gas. Finally, the exhaust gas treated by the CO ablation block 6 is discharged from the system through the exhaust gas exhaust pipe 7. The setting of the exhaust gas exhaust pipe 7 ensures that the purified exhaust gas can be discharged smoothly and will not cause secondary pollution to the air quality in the mine.

[0046] In a preferred embodiment, the present invention can be further configured as follows: Figure 1As shown; the CO ablation block 6 is a solid structure having a plurality of interconnected channels or holes to form a honeycomb structure. The surface of the CO ablation block 6 is coated with or adsorbed with a CO ablation agent, which can be released or activated under certain conditions to react with CO to achieve ablation or removal of CO. The CO ablation block 6 is designed to have a honeycomb structure having a plurality of interconnected channels or holes. This unique design not only gives the CO ablation block 6 a larger surface area, but also enables the CO ablation agent to be evenly distributed on its surface or internal channels. When the exhaust gas passes through the CO ablation block 6, the CO molecules in the exhaust gas can fully contact the ablation agent, thereby improving the reaction efficiency and removal effect of CO and the ablation agent. Specifically, C The surface of the CO ablation block 6 is coated with or adsorbed with a special CO ablation agent, which can be released or activated under specific conditions such as temperature, humidity or light, and then react chemically with the CO molecules in the exhaust gas. During the reaction, the active ingredients in the CO ablation agent combine with the CO molecules to form stable compounds, thereby achieving the ablation or removal of CO. In addition, the honeycomb structure of the CO ablation block 6 also enhances its mechanical strength and stability. This structure enables the CO ablation block 6 to withstand higher exhaust gas pressure and temperature fluctuations while maintaining the integrity of its shape and structure. Therefore, the CO ablation block 6 can adapt to different working environments and conditions, such as the operation of mine transport vehicles in harsh environments such as high temperature, high humidity, and dust.

[0047] In a preferred embodiment, the present invention can be further configured as follows: Figure 1As shown; a filter screen 8 for blocking particulate matter in the exhaust gas is arranged on the inner side of the exhaust gas connecting pipe 1, wherein a first one-way valve 9 located downstream of the filter screen 8 is also arranged on the inner side of the exhaust gas connecting pipe 1, and the exhaust gas in the engine exhaust port can flow to the inner side of the water storage tank 2 through the first one-way valve 9, and the filter screen 8 is arranged at the entrance of the exhaust gas connecting pipe 1, close to the engine exhaust port. The main function of the filter screen 8 is to block particulate matter carried in the exhaust gas, such as dust, carbon particles, etc. If these particulate matter directly enters the exhaust gas treatment system, it will not only pollute the treatment medium and reduce the treatment efficiency, but also may cause wear and blockage to the components inside the system. Therefore, the setting of the filter screen 8 is an important measure to protect the exhaust gas treatment system and extend its service life. Downstream of the filter screen 8, that is, in the downstream direction of the exhaust gas flow, A first one-way valve 9 is provided. The function of the first one-way valve 9 is to ensure that the exhaust gas can only flow in one direction, that is, flow from the engine exhaust port to the water storage tank 2, to prevent the exhaust gas from flowing back during the treatment process. This design not only ensures the continuity and stability of the exhaust gas treatment, but also avoids the abnormal fluctuations of the internal pressure and temperature of the system caused by the backflow, thereby protecting the safe operation of the system. When the engine is working, the exhaust gas enters the exhaust gas connecting pipe 1 through the exhaust port, and is first filtered by the filter 8 to remove the particulate matter therein, and then is guided by the first one-way valve 9 to flow smoothly to the inside of the water storage tank 2. In the water storage tank 2, the exhaust gas will undergo further cooling and purification, and finally be discharged from the system through the subsequent fire-retardant drying connecting piece 4, CO ablation agent tank 5 and exhaust gas exhaust pipe 7.

[0048] In a preferred embodiment, the present invention can be further configured as follows: Figure 1As shown; a metal float 10 is also provided in the water tank 2, one end of which penetrates and extends to the outside of the water tank 2, wherein the end of the metal float 10 located on the inner side of the water tank 2 is in contact with the liquid level plane of the water tank 2, and a scale 11 is also provided on the metal float 10. In the exhaust gas treatment system of the mine transport vehicle, the water tank 2 not only provides a cooling and preliminary purification environment for the exhaust gas, but also exchanges heat and substances with the exhaust gas through the water medium inside it. In order to monitor the water level in the water tank 2 in real time and ensure that the system can operate stably, a metal float 10 is added to the water tank 2, one end of which penetrates and extends to the outside of the water tank 2. The design of the metal float 10 is based on the buoyancy principle, and its end located on the inner side of the water tank 2 always keeps in contact with the liquid level plane of the water tank 2. As the water level in the water tank 2 rises or falls, the metal float 10 will rise or fall accordingly. This design allows us to observe the position of the metal float 10 The metal float 10 is provided with a scale 11 to intuitively judge the water level in the water tank 2. In order to further improve the accuracy and convenience of water level monitoring, a scale 11 is also provided on the metal float 10. The scale 11 marks the different positions that the metal float 10 may reach with specific scales, thereby corresponding to the different water level heights in the water tank 2. When the metal float 10 moves with the rise and fall of the water level, we can directly read the scale value on the scale 11 to accurately know the water level in the water tank 2. In actual applications, when the water level in the water tank 2 is too low, we need to replenish the water medium in time to ensure that the exhaust gas can be fully cooled and purified. When the water level is too high, it may be necessary to check whether the drainage function of the system is normal to avoid system failure caused by excessively high water level. Through real-time monitoring of the metal float 10 and the scale 11, we can discover and deal with these problems in time, thereby ensuring the stable operation and high efficiency of the exhaust gas treatment system.

[0049] In a preferred embodiment, the present invention can be further configured as follows: Figure 1 As shown; the partition assembly 3 includes:

[0050] An L-shaped baffle 31 is arranged in an L-shape as a whole, wherein the vertical end of the L-shaped baffle 31 is fixedly installed on the inner side of the water storage tank 2, and the horizontal end of the L-shaped baffle 31 is sunk in the water in the water storage tank 2, which is used to prevent the exhaust gas from floating up; and

[0051] A straight partition 32, one end of which is fixedly installed on the inner side of the water tank 2, wherein the end of the straight partition 32 away from the inner wall of the water tank 2 is higher than the horizontal end of the L-shaped partition 31 and the liquid level plane, and there is a certain distance between the L-shaped partition 31 and the straight partition 32, wherein the distance between the L-shaped partition 31 and the straight partition 32 is the exhaust gas circulation area, and the L-shaped partition 31 is arranged in an L shape as a whole, and its vertical end is fixedly installed on the inner side of the water tank 2, which plays a supporting and fixing role, while the horizontal end of the L-shaped partition 31 is sunk in the water in the water tank 2. This design utilizes the buoyancy and resistance of water to effectively block the upward floating tendency of the exhaust gas in the water tank 2. When the exhaust gas enters the water tank 2 through the exhaust gas connecting pipe 1, the horizontal end of the L-shaped partition 31 can force the exhaust gas to flow downward, thereby increasing the contact time and contact area between the exhaust gas and the water medium, thereby improving the cooling and purification of the exhaust gas. At the same time, one end of the straight partition 32 is also fixedly installed on the inner side of the water tank 2, but the end away from the inner wall of the water tank 2 is higher than the horizontal end of the L-shaped partition 31 and the liquid level plane. This design not only ensures that the exhaust gas can continue to flow along a specific path after passing through the L-shaped partition 31, but also avoids the exhaust gas from directly impacting the liquid surface of the water tank 2, reducing the generation of splashes and the escape of exhaust gas. There is a certain distance between the L-shaped partition 31 and the straight partition 32, and this area is designed as the exhaust gas circulation area. When the exhaust gas passes through this area, due to the guidance and restriction of the L-shaped partition 31 and the straight partition 32, its flow speed and direction are effectively controlled. This design not only improves the mixing uniformity of the exhaust gas and the water medium, but also promotes the dissolution and transformation of harmful substances in the exhaust gas, further improving the efficiency and purification effect of the exhaust gas treatment.

[0052] In a preferred embodiment, the present invention can be further configured as follows: Figure 1 As shown; the fire-retardant drying connecting piece 4 includes:

[0053] A metal pipe 41, one end of which is interconnected with the water storage tank 2, and the other end of which is interconnected with the CO ablation agent storage tank 5;

[0054] The fire-blocking grille 42 is fixedly mounted on the inner side of the metal pipe 41, wherein the outer wall of the fire-blocking grille 42 is in contact with the inner wall of the metal pipe 41; and

[0055] The silica gel desiccant 43 is arranged on the inner side of the metal pipe 41 and is located downstream of the fire-blocking grille 42. The fire-blocking drying connecting piece 4 is mainly composed of three parts: the metal pipe 41, the fire-blocking grille 42 and the silica gel desiccant 43. The metal pipe 41 is used as the main body of the connecting piece. One end of the metal pipe 41 is interconnected with the water storage tank 2 to receive the exhaust gas that has been preliminarily treated; the other end is interconnected with the CO2 ablation agent storage tank 5 to guide the exhaust gas to the next step of the treatment process. The material of the metal pipe 41 is strong and durable, and can withstand the high temperature and high pressure of the exhaust gas to ensure the stable operation of the system. The fire-blocking grille 42 is fixedly installed on the inner side of the metal pipe 41, and its outer wall is connected to the metal pipe 41. The inner walls are in close contact, forming an effective fire barrier. When the exhaust gas flows in the metal pipe 41, if flames or sparks are generated for some reason, the fire barrier grille 42 can quickly isolate the fire source to prevent the flame from spreading to the entire system, thereby ensuring the safety of the system. Downstream of the fire barrier grille 42, that is, downstream of the exhaust gas flow direction, a silica gel desiccant 43 is arranged. The silica gel desiccant 43 has a strong moisture absorption capacity and can effectively absorb moisture in the exhaust gas to prevent moisture from interfering with subsequent treatment processes. At the same time, the silica gel desiccant 43 can further purify the exhaust gas, remove tiny particles and impurities therein, and improve the quality of the exhaust gas.

[0056] In a preferred embodiment, the present invention can be further configured as follows: Figure 1As shown; a second one-way valve 12 is provided on the inner side of the metal pipe 41 and the exhaust gas emission pipe 7, wherein the exhaust gas in the water storage tank 2 can flow to the outside of the exhaust gas emission pipe 7 through the second one-way valve 12. In the exhaust gas treatment process of the mine transport vehicle, the metal pipe 41 serves as a key component connecting the water storage tank 2 with subsequent treatment components and the final exhaust gas emission pipe 7. The exhaust gas flowing inside it needs to be precisely controlled to prevent backflow and leakage. For this purpose, a second one-way valve 12 is provided on the inner side of the metal pipe 41 and the exhaust gas emission pipe 7. The design principle of the second one-way valve 12 is based on the one-way flow characteristics of the fluid. It allows the exhaust gas to flow smoothly in a specific direction and prevents it from flowing in the opposite direction. The second one-way valve 12 in the metal pipe 41 ensures that the exhaust gas that has been preliminarily treated from the water storage tank 2 can flow smoothly to the subsequent CO ablation agent storage tank without being affected by pressure. The exhaust gas in the water tank 2 will not flow back to the water tank 2 due to force fluctuation or system abnormality. Similarly, the second one-way valve 12 arranged in the exhaust pipe 7 plays a role in protecting the external environment. It ensures that the exhaust gas after a series of treatments can be discharged into the atmosphere safely and orderly, and prevents any possible exhaust gas leakage or backflow into the interior of the vehicle or the interior of the treatment system, thereby avoiding environmental pollution and safety hazards. When the exhaust gas in the water tank 2 reaches a certain degree of treatment and is ready to be discharged, the exhaust gas will push the open part of the second one-way valve 12 in the metal pipe 41, so that it can flow smoothly to the subsequent components. Subsequently, the further treated exhaust gas will pass through the second one-way valve 12 in the metal pipe 41 in turn, and finally reach the exhaust pipe 7. In the exhaust pipe 7, the second one-way valve 12 again ensures the one-way flow of the exhaust gas, so that it can be safely discharged into the atmosphere.

[0057] In a preferred embodiment, the present invention can be further configured as follows: Figure 1As shown; the water tank 2 and the CO ablation agent tank 5 are both cylindrical, wherein the water tank 2 is composed of two cylinders with a C-shaped cross-section, the end of the metal pipe 41 away from the water tank 2 is interconnected with one of the cylinders, and the other cylinder is interconnected with the exhaust gas emission pipe 7, and the two cylinders are detachably connected. The water tank 2 and the CO ablation agent tank 5 are both designed to be cylindrical, which is not only convenient for processing and manufacturing, but also maximizes the use of the space inside the tank, thereby improving the efficiency of exhaust gas treatment, wherein the water tank 2 is composed of two cylinders with a C-shaped cross-section, and the two cylinders are connected by a detachable connection. This design makes the water tank 2 more convenient to maintain and clean, and is also convenient for adjusting the capacity of the tank according to actual needs. In the two cylinders of the water tank 2, the end of the metal pipe 41 away from the water tank 2 is interconnected with one of the cylinders, and this cylinder enters the water tank as the exhaust gas The inlet of 2 is responsible for receiving the exhaust gas from the rear of the vehicle. The exhaust gas is fully contacted and exchanged with the water medium in the water tank 2 to achieve the purpose of cooling and preliminary purification. The exhaust gas treated by the water tank 2 will then flow to another cylinder. This cylinder serves as the outlet for the exhaust gas to leave the water tank 2 and is interconnected with the exhaust gas emission pipe 7. The exhaust gas emission pipe 7 is responsible for safely discharging the treated exhaust gas into the atmosphere. It is worth noting that there are multiple ways to realize the detachable connection between the two cylinders of the water tank 2. One of the ways is to use a threaded connection, which is simple and easy to use, and the connection is tight, but a certain tightening torque may be required to ensure the stability of the connection. Another way is to use a flange connection, which is more stable and reliable and is suitable for occasions that need to withstand greater pressure or vibration. Regardless of the connection method, it ensures that the two cylinders of the water tank 2 can be tightly connected together to prevent exhaust gas leakage or water medium overflow.

[0058] The specific working principle of the CO tail gas treatment system for a mine transport vehicle of the present invention is as follows:

[0059] First, the engine of the mine transport vehicle is started, and the exhaust gas is then discharged through the engine exhaust port and enters the exhaust gas connecting pipe 1. A filter 8 is provided on the inner side of the exhaust gas connecting pipe 1. The filter 8 can block particulate matter in the exhaust gas to ensure the cleanliness of the exhaust gas before entering the subsequent treatment system. Subsequently, the exhaust gas passes through a first one-way valve 9 located downstream of the filter 8. The first one-way valve 9 ensures that the exhaust gas can flow unidirectionally to the inner side of the water storage tank 2, preventing the exhaust gas from flowing back or leaking.

[0060] After entering the water storage tank 2, the exhaust gas first encounters the L-shaped partition 31. The L-shaped partition 31 is set in an L shape as a whole, and its vertical end is fixedly installed on the inner side of the water storage tank 2, while the horizontal end is sunk in the water in the water storage tank 2. This design effectively blocks the exhaust gas from floating up, forcing the exhaust gas to fully contact and exchange in the water, thereby achieving the purpose of cooling and preliminary purification. At the same time, a straight partition 32 is also provided in the water storage tank 2, which forms a certain distance with the L-shaped partition 31, forming an exhaust gas circulation area. The exhaust gas flows along a specific path in the circulation area, further improving the contact efficiency between the exhaust gas and the water medium;

[0061] After being processed by the water storage tank 2, the exhaust gas enters the fire-retardant drying connecting piece 4, which is composed of a metal pipe 41, a fire-retardant grid 42 and a silica gel desiccant 43. When the exhaust gas flows in the metal pipe 41, it first passes through the fire-retardant grid 42, which can prevent flames or sparks from spreading in the pipe, ensuring the safety of the system. Subsequently, the exhaust gas passes through the silica gel desiccant 43, which can absorb moisture in the exhaust gas to prevent moisture from interfering with subsequent processing procedures;

[0062] After entering the CO ablation agent storage tank 5, the exhaust gas comes into contact with the CO ablation block 6. The CO ablation block 6 is a solid structure having a plurality of interconnected channels or holes to form a honeycomb structure. The surface of the CO ablation agent is coated or adsorbed. The ablation agent can be released or activated under certain conditions to react with carbon monoxide in the exhaust gas, thereby achieving the purpose of ablation or removal of CO. The honeycomb structure of the CO ablation block 6 not only provides a large surface area, which is conducive to the uniform distribution and effective reaction of the CO ablation agent, but also enhances its mechanical strength and stability.

[0063] Finally, the exhaust gas treated by the CO2 ablation agent storage tank 5 enters the exhaust gas exhaust pipe 7. A second one-way valve 12 is arranged on the inner side of the exhaust gas exhaust pipe 7. The one-way valve ensures that the exhaust gas can flow into the atmosphere in one direction, preventing the exhaust gas from flowing back or leaking into the system. At the same time, since the water storage tank 2 and the CO2 ablation agent storage tank 5 are both cylindrical, and the water storage tank 2 is composed of two cylinders with a C-shaped cross-section, the two cylinders are detachably connected, so the system is more convenient for maintenance and cleaning;

[0064] In addition, a metal float 10 is provided in the water tank 2, one end of which penetrates through and extends to the outside of the water tank 2. The end of the metal float 10 located on the inner side of the water tank 2 is in contact with the liquid level plane of the water tank 2, and a scale 11 is also provided thereon. By observing the readings on the scale 11, the water level in the water tank 2 can be easily understood, thereby timely performing water replenishment or drainage operations.

[0065] A method for preparing a CO ablation block comprises the following steps:

[0066] S10, pre-treating activated carbon: placing the activated carbon in a desorption tank, introducing desorption steam from the top of the desorption tank, heating the activated carbon to remove impurities and gases adsorbed on the surface of the activated carbon, and after desorption, blowing air into the desorption tank to reduce the temperature of the activated carbon to a safe removal range, taking out the cooled activated carbon, and placing it in a vacuum box for drying until the activated carbon is dry;

[0067] S20, molding treatment: put the pre-treated activated carbon into a special mold, and knead it by applying external force to form a honeycomb block in the mold. According to actual needs, molds of different shapes and sizes are selected to produce activated carbon shapes that meet the requirements of various ventilation ducts;

[0068] S30, preparing ablative agent slurry: mixing the Cu-Mn-Sn water-resistant ablative agent with the vanadium-based strong hydrophobic material Ni@ZnV2O4-ZnO, ensuring that the ablative agent and the hydrophobic material are evenly mixed to form the desired slurry;

[0069] S40, loading the ablation agent and drying: completely immerse the activated carbon honeycomb block obtained in step S20 into the slurry prepared in step S30, ensuring that the surface of the activated carbon block is evenly covered with a layer of slurry, take the impregnated activated carbon block out of the slurry, and place it in a static state for a period of time to allow the slurry to fully penetrate into the activated carbon and solidify; place the activated carbon block after standing in a drying device, and dry it at a temperature of 110°C until the slurry is completely dry and firmly attached to the activated carbon block, thereby obtaining an activated carbon carrier loaded with the CO ablation agent, i.e., a CO ablation block.

[0070] In the pretreatment stage of activated carbon, impurities and gases on the surface of activated carbon are effectively removed through desorption steam heating treatment, which not only improves the purity of activated carbon, but also creates more favorable conditions for its subsequent loading of ablative agent. At the same time, vacuum drying treatment ensures the thorough drying of activated carbon and avoids the interference of moisture on the loading effect of ablative agent. In the molding stage, the activated carbon is kneaded into a honeycomb block by using a special mold and applying external force. This structure not only increases the specific surface area of ​​activated carbon and provides more CO adsorption and reaction sites, but also gives the CO ablative block good air permeability and mechanical strength, so that it can better adapt to the requirements of various ventilation ducts. When preparing the ablative agent slurry, the Cu-Mn-Sn water-resistant ablative agent and the vanadium-based strong hydrophobic material Ni@ZnV2O4-ZnO are uniformly mixed. The vanadium-based strong hydrophobic material Ni@ZnV2O4-ZnO has been disclosed in Chinese patent CN202211373082.5 and will not be repeated here. It ensures the close combination of the ablative agent and the hydrophobic material. The mixed slurry not only has good catalytic properties and can effectively ablate or remove CO under specific conditions, but also enhances the water resistance of the CO ablation block due to the addition of hydrophobic materials, so that it can maintain a stable ablation effect in a humid environment. Finally, in the loading and drying stage of the ablation agent, the slurry is fully infiltrated into the activated carbon and firmly attached to its surface through the steps of impregnation, standing and drying. This process not only ensures the uniform distribution of the ablation agent on the activated carbon carrier, but also completely dries and solidifies the slurry through drying, thereby forming a CO ablation block with excellent CO ablation performance. In summary, this CO ablation block preparation method successfully prepares a CO ablation block with high purity, high specific surface area, good air permeability and mechanical strength and excellent CO ablation performance through the steps of fine pretreatment, molding treatment, ablation agent slurry preparation and loading drying. This CO ablation block has broad application prospects in the fields of mine transport vehicle exhaust gas treatment, industrial waste gas purification, etc., and can effectively reduce the CO concentration in the exhaust gas and protect the environment and human health.

[0071] In the activated carbon pretreatment process of step S10, after the desorption steam heating treatment and before the purge air cooling, the activated carbon in the desorption tank is intermittently or continuously ultrasonically treated with ultrasound to further enhance the cleanliness of the activated carbon surface and the permeability of the pore structure. In the molding process of step S20, an adjustable mold system is used. The system allows the size and shape of the mold to be fine-tuned according to actual needs during the molding process without replacing the entire mold. In addition, a microporous structure is designed inside the mold to promote the uniform distribution and penetration of the slurry inside the activated carbon block. When preparing the ablative agent slurry in step S30, in addition to the basic Cu-Mn-Sn water-resistant ablative agent and vanadium-based strong hydrophobic material, a certain amount of nano-scale inorganic filler is added. Materials such as silica, alumina, etc. and / or surfactants are added to improve the fluidity and wettability of the slurry. During the loading and drying process of the ablative agent in step S40, vacuum impregnation technology is used instead of conventional impregnation, that is, a negative pressure environment is introduced during the impregnation process to promote the slurry to penetrate deeper into the activated carbon. In addition, a step-by-step heating strategy is adopted in the drying stage, first pre-drying at a lower temperature such as 60-80°C, and then thoroughly drying at a high temperature of 110°C to reduce the internal stress that may be generated during the drying process. After step S40, the CO ablation block is subjected to surface coating treatment to enhance its corrosion resistance, or performance tests such as CO adsorption-desorption cycle test and long-term stability test are performed to ensure that the product meets the established performance indicators.

[0072] In the step S10 of pretreating the activated carbon, after the desorption steam heating treatment and before the purge air cooling, the activated carbon in the desorption tank is intermittently or continuously ultrasonically treated with ultrasound. This innovative step greatly enhances the cleanliness of the activated carbon surface and optimizes the permeability of its pore structure, providing a more ideal substrate for the subsequent loading of the ablative agent. In the molding process step S20, the application of the adjustable mold system makes the production process more flexible and efficient. The system allows the size and shape of the mold to be fine-tuned according to actual needs without replacing the entire mold, greatly reducing the production cost and cycle. In addition, the microporous structure designed inside the mold further promotes the uniform distribution and penetration of the slurry inside the activated carbon block, laying a solid foundation for the preparation of high-performance CO ablation blocks. In the step S30 of preparing the ablation agent slurry, by adding nano-scale inorganic fillers such as silica, alumina, etc. and / or surfactants, not only the fluidity and wettability of the slurry are improved, but also the binding force between the ablation agent and the activated carbon is improved, thereby enhancing the overall performance of the CO ablation block. In the step S30 of loading the ablation agent and drying In step S40, the introduction of vacuum impregnation technology enables the slurry to penetrate deeper into the activated carbon, thereby increasing the loading amount and distribution uniformity of the ablation agent on the activated carbon carrier. At the same time, the application of the step-by-step heating strategy effectively reduces the internal stress that may be generated during the drying process, and avoids the structural damage of the CO ablation block caused by thermal stress. In addition, after step S40, the CO ablation block is subjected to surface coating treatment to enhance its corrosion resistance, or performance tests such as CO adsorption-desorption cycle test and long-term stability test are performed. These subsequent processing steps ensure that the product meets the established performance indicators, further enhancing the market competitiveness and application value of the CO ablation block. In summary, by introducing a series of optimization measures such as ultrasonic treatment, adjustable mold system, nano-scale inorganic fillers and surfactants, vacuum impregnation technology and step-by-step heating strategy, this preparation method of the CO ablation block has achieved remarkable results in improving product quality, reducing production costs, enhancing product performance and application value, etc., and provides a more efficient and reliable solution for the fields of mine transport vehicle exhaust gas treatment and industrial waste gas purification.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0074] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CO tail gas treatment system for a mine transport vehicle, characterized in that: include: An exhaust gas connecting pipe (1) which is in communication with an exhaust port of the engine; A water storage tank (2) is arranged on the other end of the tail gas connecting pipe (1) and is in communication with the tail gas connecting pipe (1), wherein the water storage tank (2) is filled with water; A partition assembly (3) is arranged inside the water storage tank (2) and is used to partition the inside of the water storage tank (2) to form a specific path; A fire-retardant and drying connecting piece (4) is arranged on the water storage tank (2) and is in communication with the water storage tank (2), and is used for fire-retardant and drying the tail gas; A CO ablation agent storage tank (5) is arranged on the fire-retardant dry connecting piece (4) and is in communication with the fire-retardant dry connecting piece (4), wherein the fire-retardant dry connecting piece (4) is used to connect the water storage tank (2) and the CO ablation agent storage tank (5) together, and a CO ablation block (6) is also arranged in the CO ablation agent storage tank (5) to remove carbon monoxide in the exhaust gas; The tail gas discharge pipe (7) is arranged on the CO ablative agent storage tank (5) and is in communication with the CO ablative agent storage tank (5).

2. A CO tail gas treatment system for a mine transport vehicle according to claim 1, characterized in that: The CO ablation block (6) is a solid structure having a plurality of interconnected channels or holes to form a honeycomb structure. The surface of the CO ablation block (6) is coated with or adsorbed with a CO ablation agent, and the CO ablation agent can be released or activated under specific conditions to react with CO to achieve ablation or removal of CO.

3. A CO tail gas treatment system for a mine transport vehicle according to claim 1, characterized in that: A filter screen (8) for blocking particulate matter in the exhaust gas is arranged on the inner side of the exhaust gas connecting pipe (1), wherein a first one-way valve (9) located downstream of the filter screen (8) is also arranged on the inner side of the exhaust gas connecting pipe (1), and the exhaust gas in the exhaust port of the engine can flow to the inner side of the water storage tank (2) through the first one-way valve (9).

4. A CO tail gas treatment system for a mine transport vehicle according to claim 1, characterized in that: The water tank (2) is also provided with a metal float (10) having one end penetrating through and extending to the outside of the water tank (2), wherein the end of the metal float (10) located inside the water tank (2) is in contact with the liquid level surface of the water tank (2), and a scale (11) is also provided on the metal float (10).

5. A CO tail gas treatment system for a mine transport vehicle according to claim 1, characterized in that: The partition assembly (3) comprises: An L-shaped baffle (31) is arranged in an L-shape as a whole, wherein the vertical end of the L-shaped baffle (31) is fixedly mounted on the inner side of the water storage tank (2), and the horizontal end of the L-shaped baffle (31) is submerged in the water in the water storage tank (2), so as to prevent the exhaust gas from floating up; and A straight partition (32), one end of which is fixedly mounted on the inner side of the water storage tank (2), wherein the end of the straight partition (32) away from the inner wall of the water storage tank (2) is higher than the horizontal end of the L-shaped partition (31) and the liquid level plane, and there is a certain distance between the L-shaped partition (31) and the straight partition (32), wherein the distance between the L-shaped partition (31) and the straight partition (32) is the exhaust gas circulation area.

6. A CO tail gas treatment system for a mine transport vehicle according to claim 1, characterized in that: The fire-retardant drying connecting piece (4) comprises: A metal pipe (41), one end of which is in communication with the water storage tank (2) and the other end of which is in communication with the CO ablation agent storage tank (5); A fire-blocking grid (42) is fixedly mounted on the inner side of the metal pipe (41), wherein the outer wall of the fire-blocking grid (42) and the inner wall of the metal pipe (41) are in contact with each other; and The silica gel desiccant (43) is arranged inside the metal pipe (41) and is located downstream of the fire-blocking grid (42).

7. A CO tail gas treatment system for a mine transport vehicle according to claim 6, characterized in that: A second one-way valve (12) is provided on the inner sides of the metal pipe (41) and the exhaust gas discharge pipe (7), wherein the exhaust gas in the water storage tank (2) can flow to the outer side of the exhaust gas discharge pipe (7) through the second one-way valve (12).

8. A CO tail gas treatment system for a mine transport vehicle according to claim 6, characterized in that: The water storage tank (2) and the CO ablation agent storage tank (5) are both cylindrical, wherein the water storage tank (2) is composed of two cylinders with C-shaped cross-sections, the end of the metal pipe (41) away from the water storage tank (2) is interconnected with one of the cylinders, and the other cylinder is interconnected with the exhaust gas exhaust pipe (7), and the two cylinders are detachably connected.

9. A method for preparing a CO ablation block according to claim 2, characterized in that: The following steps are involved: S10, pre-treating activated carbon: placing the activated carbon in a desorption tank, introducing desorption steam from the top of the desorption tank, heating the activated carbon to remove impurities and gases adsorbed on the surface of the activated carbon, and after desorption, blowing air into the desorption tank to reduce the temperature of the activated carbon to a safe removal range, taking out the cooled activated carbon, and placing it in a vacuum box for drying until the activated carbon is dry; S20, molding treatment: put the pre-treated activated carbon into a special mold, and knead it by applying external force to form a honeycomb block in the mold. According to actual needs, molds of different shapes and sizes are selected to produce activated carbon shapes that meet the requirements of various ventilation ducts; S30, preparing ablative agent slurry: mixing the Cu-Mn-Sn water-resistant ablative agent with the vanadium-based strong hydrophobic material (Ni@ZnV2O4-ZnO), ensuring that the ablative agent and the hydrophobic material are evenly mixed to form the desired slurry; S40, loading the ablation agent and drying: completely immerse the activated carbon honeycomb block obtained in step S20 into the slurry prepared in step S30, ensuring that the surface of the activated carbon block is evenly covered with a layer of slurry, take the impregnated activated carbon block out of the slurry, and place it in a static state for a period of time to allow the slurry to fully penetrate into the activated carbon and solidify; place the activated carbon block after standing in a drying device, and dry it at a temperature of 110°C until the slurry is completely dry and firmly attached to the activated carbon block, thereby obtaining an activated carbon carrier loaded with the CO ablation agent, i.e., a CO ablation block.

10. A method for preparing a CO ablation block according to claim 9, characterized in that: In the process of pre-treating the activated carbon in step S10, after the desorption steam heating treatment and before the purge air cooling, the activated carbon in the desorption tank is intermittently or continuously ultrasonically treated with ultrasound to further enhance the cleanliness of the activated carbon surface and the permeability of the pore structure. In the molding process of step S20, an adjustable mold system is used. The system allows the size and shape of the mold to be fine-tuned according to actual needs during the molding process without replacing the entire mold. In addition, a microporous structure is designed inside the mold to promote the uniform distribution and penetration of the slurry inside the activated carbon block. When preparing the ablative agent slurry in step S30, in addition to the basic Cu-Mn-Sn water-resistant ablative agent and vanadium-based strong hydrophobic material, a certain amount of nano-scale inorganic Fillers such as silica, alumina, etc. and / or surfactants are used to improve the fluidity and wettability of the slurry. In the process of loading the ablation agent and drying in step S40, vacuum impregnation technology is used instead of conventional impregnation, that is, a negative pressure environment is introduced during the impregnation process to promote the slurry to penetrate deeper into the activated carbon. In addition, a step-by-step heating strategy is adopted in the drying stage, first pre-drying at a lower temperature such as 60-80°C, and then thoroughly drying at a high temperature of 110°C to reduce the internal stress that may be generated during the drying process. After step S40, the CO ablation block is subjected to surface coating treatment to enhance its corrosion resistance, or performance tests such as CO adsorption-desorption cycle test, long-term stability test, etc. are performed to ensure that the product meets the established performance indicators.

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