An automatic coal powder grinding and dispensing reaction system

Abstract

This invention belongs to the field of pulverized coal reaction technology, specifically relating to an automatic pulverized coal grinding and distribution reaction system, including: a pulverized coal screening module, a pulverized coal distribution module, a pulverized coal reaction module, and a dust treatment module. The pulverized coal screening module separates the pulverized coal particles into two parts of different sizes. The pulverized coal distribution module divides the first part of the pulverized coal into three parts according to different diameters, and each part enters the pulverized coal reaction module through a different outlet to obtain optimal reaction combustion speed and combustion efficiency. The pulverized coal reaction module performs a catalytic combustion reaction to produce hot steam, and the dust treatment module treats the reaction waste gas to render it harmless. This system, by optimizing the pulverized coal screening, distribution, reaction, and dust treatment processes, achieves efficient utilization and green production of pulverized coal, not only improving the combustion and utilization efficiency of pulverized coal but also significantly reducing the emission of harmful by-products.

Description

Technical Field

[0001] This invention relates to the field of pulverized coal reaction technology, and more particularly to an automatic pulverized coal grinding and dispensing reaction system. Background Technology

[0002] my country is rich in coal resources, with coal reserves accounting for 45.7% of the world's total. At the same time, my country is also a major coal consumer, with the entire industry mining approximately 1 billion tons annually. Clean and efficient utilization of coal resources is of great significance to my country's economic development and ecological construction. With the acceleration of urbanization and the improvement of residents' living standards, industrial scale continues to expand, leading to a significant increase in electricity demand. Currently, the electricity supply for industrial production mainly relies on coal-fired power generation, which requires a huge amount of pulverized coal.

[0003] However, traditional pulverized coal combustion methods often face numerous challenges, such as incomplete combustion, waste of reactant resources, and emissions of harmful byproducts. Summary of the Invention

[0004] The technical problem to be solved by this invention is: in order to solve the technical problems of incomplete combustion and harmful by-product emissions in the prior art, this invention provides an automatic grinding and distributing coal powder reaction system to improve the reaction depth and utilization efficiency of coal powder and reduce environmental pollution.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an automatic grinding and distributing coal powder reaction system, comprising: a coal powder screening module, wherein the coal powder screening module includes a coal powder particle injector, a mass flow controller and a particle screener connected in sequence through a pipeline, the coal powder particle injector is used to spray coal powder particles, the mass flow controller is used to control the flow rate of coal powder particles, and the particle screener is used to screen the coal powder particles into first coal powder and second coal powder.

[0006] A pulverized coal distribution module includes a first nitrogen tank and a three-way separator connected by a pipeline. The first nitrogen tank is connected to the particle screen via a pipeline and blows the first pulverized coal to the three-way separator, which is used to separate the first pulverized coal into particles of a first diameter, particles of a second diameter, and particles of a third diameter.

[0007] The coal powder reaction module includes a catalytic reactor, which is provided with a particle feed inlet for the first diameter particles, the second diameter particles and the third diameter particles, a catalyst feed inlet for the catalyst, a waste discharge outlet for the reaction waste, and a gas outlet for the reaction waste gas.

[0008] The dust treatment module includes a cyclone separator and an electrostatic precipitator. The cyclone separator is connected to the waste discharge port via a pipeline and is used to separate coal slag from the reaction waste. The electrostatic precipitator is connected to the gas outlet via a pipeline and is used to remove dust carried in the waste gas. The specific technical effects are as follows: the coal powder screening module separates the coal powder particles into two parts of different sizes (first coal powder and second coal powder); the coal powder distribution module divides the first coal powder into three parts according to different diameters, and each part enters the coal powder reaction module through a different discharge port to obtain the optimal reaction combustion speed and combustion efficiency; the coal powder reaction module performs a catalytic combustion reaction on the coal powder to produce hot steam; and the dust treatment module treats the reaction waste gas to render it harmless. This system optimizes the screening, grinding, distribution, reaction, and dust treatment processes of coal powder, achieving efficient utilization and green production of coal powder. It not only improves the combustion efficiency and utilization efficiency of coal powder but also significantly reduces the emission of harmful by-products.

[0009] Furthermore, the diameter of the first coal powder particles screened out is less than 10 mm. The specific technical effect is that screening coal powder particles into fine particles less than 10 mm helps the coal powder to contact the air and catalyst more fully in subsequent combustion and catalytic reactions, thereby improving the combustion efficiency and utilization rate of the coal powder. Furthermore, because the combustion efficiency and utilization rate of the coal powder are improved, the total amount of coal powder required by the system is correspondingly reduced, thus lowering energy consumption and production costs.

[0010] Furthermore, the diameter of the first diameter particle is 0.5mm to 1mm, the diameter of the second diameter particle is 1mm to 5mm, and the diameter of the third diameter particle is 5mm to 10mm. The specific technical effect is that coal powder particles of different diameters have different combustion characteristics and rates during combustion. Smaller particles can ignite and burn quickly, while larger particles provide a more sustained combustion effect. This combination helps to achieve a stable and efficient combustion process.

[0011] Furthermore, the particle size distribution ratio of the first diameter particles, the second diameter particles, and the third diameter particles entering the particle feed inlet is 1:7:2. The specific technical effect is that by dividing the pulverized coal particles into three size ranges and distributing them according to a specific particle size distribution ratio of 1:7:2, it can be ensured that the pulverized coal can burn more uniformly in the catalytic reactor, thereby improving the overall combustion efficiency.

[0012] Furthermore, the reaction system also includes a coal powder grinding module, which comprises a powder mill and a particulate matter recovery pipeline. The powder mill is connected to the particle screen via the pipeline and is used to grind the second coal powder. The powder mill is connected to the coal powder particle injector via the particulate matter recovery pipeline, which is used to transport the second coal powder ground by the powder mill to the coal powder particle injector. The specific technical effect is that the powder mill further grinds the second coal powder (i.e., coal powder particles with a diameter greater than 10 mm). This step ensures that coal powder that could not be directly used in the reaction due to its large size is effectively utilized. The ground coal powder particles re-enter the coal powder particle injector through the particulate matter recovery pipeline, forming a closed-loop cyclic screening process. This design avoids coal powder waste and improves coal powder utilization.

[0013] Furthermore, the powder mill includes a mill housing and crushing blades. A grinding chamber is formed inside the mill housing, and the crushing blades are rotatably disposed within the grinding chamber. One end of the mill housing has a grinding inlet communicating with the grinding chamber, which is connected to the particle screen via a pipe. The other end of the mill housing has a grinding outlet communicating with the grinding chamber, which is connected to the particulate matter recovery pipe. The specific technical effect is that the crushing blades are rotatably disposed within the grinding chamber. When coal powder enters the grinding chamber through the grinding inlet, the high-speed rotation of the crushing blades shears, impacts, and grinds the coal powder particles, thus grinding them into finer particles. The ground coal powder can be promptly transported through the particulate matter recovery pipe to a coal powder ejector for further screening or ejection, achieving the recycling of coal powder.

[0014] Furthermore, the reaction system also includes a solar power supply structure, an inlet pipe, and an outlet pipe. The solar power supply structure supplies power to the coal powder screening module, the coal powder distribution module, the coal powder reaction module, and the dust treatment module. One end of the inlet pipe is connected to one end of the outlet pipe, and the connection point is located within the solar power supply structure. A water pipe is installed inside the catalytic reactor, with one end connected to the other end of the inlet pipe and the other end connected to the other end of the outlet pipe. The specific technical effects are: the solar power supply structure provides power to the entire system, ensuring its normal operation; the inlet and outlet pipes allow water to absorb the heat generated by the solar power supply structure, and the heated water flows through the catalytic reactor, further accelerating the reaction rate of the coal powder and shortening the reaction time.

[0015] Furthermore, the pulverized coal screening module also includes a butterfly valve and a second nitrogen tank. One end of the butterfly valve is connected to the pulverized coal particle injector via a pipe, and the other end of the butterfly valve is connected to the mass flow controller via a pipe. One end of the second nitrogen tank is connected to the mass flow controller via a pipe, and the other end of the second nitrogen tank is connected to the particle screener via a pipe. Specifically, the butterfly valve, as an intermediate device connecting the particle injector and the mass flow controller, can regulate the flow rate of the pulverized coal; the second nitrogen tank provides a safe and stable screening environment, preventing explosions caused by excessively fine pulverized coal.

[0016] Furthermore, the particle screen is equipped with a screen with sieve holes, the diameter of which is 10mm.

[0017] Furthermore, the three-way divider includes: a dividing shell, a dividing baffle, a first branch pipe, a second branch pipe, and a third branch pipe. The dividing baffle is rotatably disposed inside the dividing shell and divides the interior of the dividing shell into a first dividing cavity, a second dividing cavity, and a third dividing cavity. The first dividing cavity is used to accommodate particles of the first diameter, the second dividing cavity is used to accommodate particles of the second diameter, and the third dividing cavity is used to accommodate particles of the third diameter. One end of the first branch pipe is connected to the first dividing cavity, one end of the second branch pipe is connected to the second dividing cavity, and one end of the third branch pipe is connected to the third dividing cavity. The other ends of the first, second, and third branch pipes are all connected to a main pipe and are connected to the particle inlet through the main pipe. A particle controller is disposed inside the first, second, and third branch pipes. The specific technical effects are as follows: the three-way separator can accurately separate particles according to their diameter, so that each type of particle can be fully utilized. Combined with the particle controller, the particle flow rate in each branch pipe can be precisely controlled. This not only ensures that the particles enter the catalytic reactor in a predetermined ratio and flow rate, making the system highly precise, but also enhances the quantitative separation of pulverized coal, improves the reaction depth and utilization efficiency of pulverized coal, and improves the controllability and stability of the system.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] (1) The present invention uses a coal powder screening module to screen coal powder particles into two parts of different sizes (first coal powder and second coal powder), and uses a coal powder distribution module to divide the first coal powder into three parts of different diameters and enter the coal powder reaction module through different discharge ports to obtain the best reaction combustion speed and combustion efficiency.

[0020] (2) The present invention prevents the coal powder from exploding due to being too fine by setting up a first nitrogen box;

[0021] (3) The present invention further precisely controls the flow rate of coal powder by setting a mass flow controller to ensure that the coal powder enters the particle screen stably and continuously;

[0022] (4) The present invention uses a coal powder reaction module to catalyze the combustion of coal powder to produce hot steam, and uses a dust treatment module to treat the reaction waste gas in a harmless manner. The system optimizes the screening, grinding, distribution, reaction and dust treatment processes of coal powder, realizes the efficient utilization and green production of coal powder, not only improves the combustion efficiency and utilization efficiency of coal powder, but also significantly reduces the emission of harmful by-products. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure of an automatic grinding and distributing coal powder reaction system according to the present invention;

[0025] Figure 2 This is a schematic diagram of the internal installation of the coal powder ejector and solar power supply structure of the present invention.

[0026] Figure 3 This is a schematic diagram of the solar power supply structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the powder mill of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the three-way converter of the present invention;

[0029] Figure 6 This is a schematic diagram of the particle control instrument of the present invention.

[0030] In the diagram: 1. Particle ejector; 2. Butterfly valve; 3. Mass flow controller; 4. Particle screener; 5. Powder mill; 6. First nitrogen tank; 7. Diverter; 8. Catalytic reactor; 9. Particle inlet; 10. Catalyst inlet; 11. Waste outlet; 12. Gas outlet; 13. Cyclone separator; 14. Electrostatic precipitator; 15. Mill housing; 16. Crushing blade; 17. Diverter baffle; 18. Solar power supply structure; 19. Water inlet pipe; 20. Water outlet pipe; 21. Particle recovery pipeline; 22. Particle controller; 23. Particles of the first diameter; 24. Particles of the second diameter; 25. Particles of the third diameter; 26. Second nitrogen tank; 27. Diverter housing; 28. First branch pipe; 29. ​​Second branch pipe; 30. Third branch pipe; 31. Main pipe. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0034] like Figures 1 to 6 The figure shown is the preferred embodiment of the present invention. The reaction system for automatically grinding and distributing coal powder in this embodiment includes: a coal powder screening module, which includes a coal powder particle injector 1, a mass flow controller 3 and a particle screener 4 connected in sequence through a pipeline. The coal powder particle injector 1 is used to spray coal powder particles, the mass flow controller 3 is used to control the flow rate of coal powder particles, and the particle screener 4 is used to screen the coal powder particles into first coal powder and second coal powder.

[0035] The coal powder grinding module includes a powder mill 5 and a particulate matter recovery pipe 21. The powder mill 5 is connected to the particle screen 4 through the pipe and is used to grind the second coal powder. The powder mill 5 is connected to the coal powder particle injector 1 through the particulate matter recovery pipe 21. The particulate matter recovery pipe 21 is used to transport the second coal powder after being ground by the powder mill 5 to the coal powder particle injector 1.

[0036] The coal powder distribution module includes a first nitrogen tank 6 and a three-way separator 7 connected by a pipeline. The first nitrogen tank 6 is connected to a particle screener 4 through a pipeline and blows the first coal powder to the three-way separator 7. The three-way separator 7 is used to divide the first coal powder into particles with a first diameter 23, particles with a second diameter 24 and particles with a third diameter 25.

[0037] The coal powder reaction module includes a catalytic reactor 8. The catalytic reactor 8 is provided with a particle feed inlet 9 for particles of the first diameter 23, particles of the second diameter 24 and particles of the third diameter 25 to enter, a catalyst feed inlet 10 for catalyst to enter, a waste outlet 11 for discharge of reaction waste and a gas outlet 12 for discharge of reaction waste gas.

[0038] The dust treatment module includes a cyclone separator 13 and an electrostatic precipitator 14. The cyclone separator 13 is connected to the waste discharge port 11 through a pipe and is used to separate coal slag from the reaction waste. The electrostatic precipitator 14 is connected to the air outlet 12 through a pipe and is used to remove dust carried in the waste gas. Therefore: the coal powder screening module separates the coal powder particles into two parts of different sizes (first coal powder and second coal powder); the coal powder distribution module divides the first coal powder into three parts according to different diameters, and each part enters the coal powder reaction module through a different outlet to obtain the optimal reaction combustion speed and combustion efficiency; the coal powder reaction module performs a catalytic combustion reaction to produce hot steam; the dust treatment module treats the reaction waste gas to render it harmless; the second coal powder (i.e., coal powder particles with a diameter greater than 10mm) is further ground by the powder mill 5. This step ensures that the coal powder that could not be directly used for the reaction due to its large size is effectively utilized. The ground coal powder particles re-enter the coal powder particle injector 1 through the particulate matter recovery pipe 21, forming a closed-loop circulating screening process. This design avoids coal powder waste and improves coal powder utilization. By optimizing the coal powder screening, grinding, distribution, reaction, and dust treatment processes, this system achieves efficient utilization and green production of coal powder, not only improving the combustion efficiency and utilization efficiency of coal powder, but also significantly reducing the emission of harmful by-products.

[0039] Specifically, there are two catalyst inlets 10, which are respectively located on both sides of the catalytic reactor 8. This is because the first diameter particles 23, the second diameter particles 24, and the third diameter particles 25 are blown into the catalytic reactor 8 by nitrogen from the first nitrogen tank 6. The catalyst inlets 10 on both sides further ensure the reaction rate. Preferably, the catalyst fed into the catalyst inlets 10 is a 0.1% YNY (Raney nickel catalyst) coal-fired catalyst.

[0040] In this embodiment, the diameter of the first coal powder particles screened out is less than 10 mm. Therefore, by screening the coal powder particles into fine particles less than 10 mm using the particle screener 4, the coal powder can more fully contact the air and catalyst in subsequent combustion and catalytic reactions, thereby improving the combustion efficiency and utilization rate of the coal powder. Furthermore, because the combustion efficiency and utilization rate of the coal powder are improved, the total amount of coal powder required by the system is correspondingly reduced, thereby lowering energy consumption and production costs.

[0041] In this embodiment, the diameter of the first diameter particle 23 is 0.5 mm to 1 mm, the diameter of the second diameter particle 24 is 1 mm to 5 mm, and the diameter of the third diameter particle 25 is 5 mm to 10 mm. Therefore, coal powder particles of different diameters have different combustion characteristics and rates during combustion. Smaller particles can ignite and burn quickly, while larger particles provide a more sustained combustion effect. This combination helps to achieve a stable and efficient combustion process.

[0042] In this embodiment, the particle size distribution ratio of the first diameter particles 23, the second diameter particles 24, and the third diameter particles 25 entering the particle feed inlet 9 is 1:7:2. Therefore, by dividing the pulverized coal particles into three size ranges and distributing them according to a specific particle size distribution ratio of 1:7:2, it can be ensured that the pulverized coal can burn more uniformly within the catalytic reactor 8, thereby improving the overall combustion efficiency.

[0043] In this embodiment, the powder mill 5 includes a mill housing 15 and a crushing blade 16. A grinding chamber is formed inside the mill housing 15, and the crushing blade 16 is rotatably disposed within the grinding chamber. One end of the mill housing 15 has a grinding inlet communicating with the grinding chamber, which is connected to the particle screen 4 via a pipe. The other end of the mill housing 15 has a grinding outlet communicating with the grinding chamber, which is connected to the particulate matter recovery pipe 21. Thus, the crushing blade 16 is rotatably disposed within the grinding chamber. When coal powder enters the grinding chamber through the grinding inlet, the high-speed rotation of the crushing blade 16 shears, impacts, and grinds the coal powder particles, thereby grinding them into finer particles. The ground coal powder can be promptly transported through the particulate matter recovery pipe 21 to the coal powder ejector 1 for further screening or ejection, achieving the recycling of coal powder.

[0044] In this embodiment, the reaction system also includes a solar power supply structure 18, a water inlet pipe 19, and a water outlet pipe 20. The solar power supply structure 18 supplies power to the coal powder screening module, coal powder distribution module, coal powder reaction module, and dust treatment module. One end of the water inlet pipe 19 is connected to one end of the water outlet pipe 20, and the connection point is located within the solar power supply structure 18. A water pipe is installed inside the catalytic reactor 8, with one end connected to the other end of the water inlet pipe 19 and the other end connected to the other end of the water outlet pipe 20. Thus, the solar power supply structure 18 can provide power to the entire system, ensuring its normal operation. By setting up the water inlet pipe 19 and the water outlet pipe 20, water absorbs the heat generated by the solar power supply structure 18, and the heated water flows through the catalytic reactor 8, further accelerating the reaction rate of the coal powder in the catalytic reactor 8 and shortening the coal powder reaction time.

[0045] Specifically, the solar power supply structure 18 is a solar thin film.

[0046] In this embodiment, the pulverized coal screening module also includes a butterfly valve 2 and a second nitrogen tank 26. One end of the butterfly valve 2 is connected to the pulverized coal particle injector 1 via a pipe, and the other end of the butterfly valve 2 is connected to the mass flow controller 3 via a pipe. One end of the second nitrogen tank 26 is connected to the mass flow controller 3 via a pipe, and the other end of the second nitrogen tank 26 is connected to the particle screener 4 via a pipe. Thus, the butterfly valve 2 serves as an intermediate device connecting the particle injector 1 and the mass flow controller 3. The butterfly valve 2 contains a butterfly plate that can regulate the flow rate of pulverized coal. When the mass flow controller 3 fails due to power failure or other factors, the butterfly valve 2 is the last line of defense for controlling the flow rate of pulverized coal. The second nitrogen tank 26 provides a safe and stable screening environment to prevent the pulverized coal from being too fine and causing an explosion.

[0047] In this embodiment, the particle screen 4 is equipped with a screen with sieve holes, the diameter of which is 10mm.

[0048] In this embodiment, the three-way divider 7 includes: a dividing shell 27, a dividing baffle 17, a first branch pipe 28, a second branch pipe 29, and a third branch pipe 30. The dividing baffle 17 is rotatably disposed inside the dividing shell 27 and divides the interior of the dividing shell 27 into a first dividing cavity, a second dividing cavity, and a third dividing cavity. The first dividing cavity is used to accommodate particles 23 of a first diameter, the second dividing cavity is used to accommodate particles 24 of a second diameter, and the third dividing cavity is used to accommodate particles 25 of a third diameter. One end of the first branch pipe 28 is connected to the first dividing cavity, one end of the second branch pipe 29 is connected to the second dividing cavity, and one end of the third branch pipe 30 is connected to the third dividing cavity. The other ends of the first branch pipe 28, the second branch pipe 29, and the third branch pipe 30 are all connected to a main pipe 31 and are connected to the particle inlet 9 through the main pipe 31. A particle controller 22 is disposed inside the first branch pipe 28, the second branch pipe 29, and the third branch pipe 30. Therefore, the three-way separator 7 can accurately separate particles according to their diameter, so that each type of particle can be fully utilized. Combined with the particle controller 22, the particle flow rate in each branch pipe can be precisely controlled. This not only ensures that the particles enter the catalytic reactor 8 in a predetermined ratio and flow rate, making the system highly precise, but also enhances the quantitative separation of coal powder, improves the reaction depth and utilization efficiency of coal powder, and improves the controllability and stability of the system.

[0049] Specifically, the diversion baffle 17 includes three baffles arranged in a ring to divide the interior of the diversion housing 27 into a first diversion cavity, a second diversion cavity, and a third diversion cavity. The first baffle has a 1mm diameter hole for passing through particles 23 with a diameter of 0.5mm to 1mm. The second baffle has a 5mm diameter hole for passing through particles 24 with a diameter of 1mm to 5mm. The third baffle has a 10mm diameter hole for passing through particles 25 with a diameter of 5mm to 10mm.

[0050] Specifically, the three-way separator 7 has a first outlet, a second outlet, and a third outlet, which are arranged sequentially from highest to lowest along the height of the separator 7. One end of the first branch pipe 28 is connected to the first outlet, one end of the second branch pipe 29 is connected to the second outlet, and one end of the third branch pipe 30 is connected to the third outlet. This design is based on the principle that particles of different masses have different kinetic energies. Larger diameter particles are heavier and will be located at the bottom of the separator 7, while smaller diameter particles are lighter and will be located at the top. Therefore, after the separation, particles with the third diameter 25 will flow out from the third branch pipe 30 at the bottom of the separator 7, particles with the first diameter 23 will flow out from the first branch pipe 28 at the top of the separator 7, and particles with the second diameter 24 will flow out from the second branch pipe 29 in the middle of the separator 7.

[0051] The specific working process of this invention is as follows:

[0052] The particle injector 1 sprays out pulverized coal, which passes through the butterfly valve 2, the mass flow controller 3 and the particle screener 4 in sequence. The particle screener 4 screens the pulverized coal. The first pulverized coal with a diameter of less than 10 mm enters the first nitrogen tank 6, and the second pulverized coal with a diameter of more than 10 mm enters the powder mill 5. After being ground by the powder mill 5, it is then transported to the pulverized coal particle injector 1 for re-injection through the particulate matter recovery pipe 21.

[0053] The first nitrogen tank 6 blows the first coal powder to the three-way separator 7 through nitrogen. The three-way separator 7 divides the first coal powder into particles with a first diameter 23, particles with a second diameter 24, and particles with a third diameter 25. Particles with the first diameter 23 flow into the first branch pipe 28, particles with the second diameter 24 flow into the second branch pipe 29, and particles with the third diameter 25 flow into the third branch pipe 30. At this time, the particle control instrument 22 in the first branch pipe 28, the second branch pipe 29, and the third branch pipe 30, according to the particle size distribution ratio of 1:7:2, makes the particles with the first diameter 23, the second diameter 24, and the third diameter 25 enter the main pipe 31. The first nitrogen tank 6 blows the particles in the main pipe 31 into the catalytic reactor 8 through nitrogen.

[0054] The catalyst is added into the catalytic reactor 8 through the catalyst inlet 10 and reacts with the first diameter particles 23, the second diameter particles 24 and the third diameter particles 25. At the same time, water is used as a medium. Water enters from the water inlet pipe 19, flows under the solar film, absorbs the waste heat, and cools the solar film. Finally, it flows out from the water outlet pipe 20. The heated water flows through the water pipe through the catalytic reactor 8 and then enters the water inlet pipe 19 to complete the water circulation.

[0055] The reaction waste from the catalytic reactor 8 is discharged from the waste outlet 11 into the cyclone separator 13. The cyclone separator 13 is used to separate the coal slag from the reaction waste. The exhaust gas from the catalytic reactor 8 is discharged from the exhaust outlet 12 into the electrostatic precipitator 14. The electrostatic precipitator 14 is used to remove the exhaust gas and the dust carried by the cyclone separator 13 during the separation of the reaction waste.

[0056] Compared with the prior art, the beneficial effects of the present invention are:

[0057] (1) The present invention uses a coal powder screening module to screen coal powder particles into two parts of different sizes (first coal powder and second coal powder), and uses a coal powder distribution module to divide the first coal powder into three parts of different diameters and enter the coal powder reaction module through different discharge ports to obtain the best reaction combustion speed and combustion efficiency.

[0058] (2) The present invention prevents the coal powder from exploding due to being too fine by setting up a first nitrogen box 6;

[0059] (3) The present invention further precisely controls the flow rate of coal powder by setting a mass flow controller 3, so as to ensure that the coal powder enters the particle screener 4 stably and continuously;

[0060] (4) The present invention uses a coal powder reaction module to catalyze the combustion of coal powder to produce hot steam, and uses a dust treatment module to treat the reaction waste gas in a harmless manner. The system optimizes the screening, grinding, distribution, reaction and dust treatment processes of coal powder, realizes the efficient utilization and green production of coal powder, not only improves the combustion efficiency and utilization efficiency of coal powder, but also significantly reduces the emission of harmful by-products.

[0061] The above description is based on the preferred embodiments of the present invention. Through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the contents of the specification, but must be determined by the scope of the claims.

Claims

1. An automatic coal powder grinding and dispensing reaction system, characterized in that, include: The coal powder screening module includes a coal powder particle injector (1), a mass flow controller (3) and a particle screener (4) connected in sequence through a pipeline. The coal powder particle injector (1) is used to spray coal powder particles, the mass flow controller (3) is used to control the flow rate of coal powder particles, and the particle screener (4) is used to screen the coal powder particles into first coal powder and second coal powder. The coal powder distribution module includes a first nitrogen tank (6) and a three-way separator (7) connected by a pipeline. The first nitrogen tank (6) is connected to the particle screen (4) by a pipeline and blows the first coal powder to the three-way separator (7). The three-way separator (7) is used to divide the first coal powder into particles of a first diameter (23), particles of a second diameter (24), and particles of a third diameter (25). The coal powder reaction module includes a catalytic reactor (8), which is provided with a particle feed inlet (9) for the first diameter particles (23), the second diameter particles (24) and the third diameter particles (25) to enter, a catalyst feed inlet (10) for the catalyst to enter, a waste discharge outlet (11) for the reaction waste to be discharged and a gas outlet (12) for the reaction waste gas to be discharged. The dust treatment module includes a cyclone separator (13) and an electrostatic precipitator (14). The cyclone separator (13) is connected to the waste discharge port (11) through a pipe and is used to separate coal slag in the reaction waste. The electrostatic precipitator (14) is connected to the air outlet (12) through a pipe and is used to remove dust carried in the waste gas.

2. The reaction system for automatically grinding and distributing pulverized coal as described in claim 1, characterized in that, The diameter of the first coal powder particles screened out was less than 10 mm.

3. The reaction system for automatically grinding and distributing pulverized coal as described in claim 2, characterized in that, The diameter of the first diameter particle (23) is 0.5 mm to 1 mm, the diameter of the second diameter particle (24) is 1 mm to 5 mm, and the diameter of the third diameter particle (25) is 5 mm to 10 mm.

4. The reaction system for automatically grinding and distributing pulverized coal as described in claim 1, characterized in that, The particle size distribution ratio of the first diameter particle (23), the second diameter particle (24), and the third diameter particle (25) entering the particle feed inlet (9) is 1:7:

2.

5. The reaction system for automatically grinding and distributing pulverized coal as described in claim 1, characterized in that, The reaction system also includes a coal powder grinding module, which includes a powder mill (5) and a particulate matter recovery pipe (21). The powder mill (5) is connected to the particle screen (4) through the pipe and is used to grind the second coal powder. The powder mill (5) is connected to the coal powder particle injector (1) through the particulate matter recovery pipe (21). The particulate matter recovery pipe (21) is used to transport the second coal powder after being ground by the powder mill (5) to the coal powder particle injector (1).

6. The reaction system for automatically grinding and distributing pulverized coal as described in claim 5, characterized in that, The powder mill (5) includes a mill housing (15) and a crushing blade (16). A milling chamber is provided inside the mill housing (15). The crushing blade (16) is rotatably disposed in the milling chamber. One end of the mill housing (15) is provided with a milling inlet that communicates with the milling chamber. The milling inlet is connected to the particle screen (4) through a pipe. The other end of the mill housing (15) is provided with a milling outlet that communicates with the milling chamber. The milling outlet is connected to the particulate matter recovery pipe (21).

7. The reaction system for automatically grinding and distributing pulverized coal as described in claim 1, characterized in that, The reaction system also includes a solar power supply structure (18), a water inlet pipe (19), and a water outlet pipe (20). The solar power supply structure (18) is used to supply power to the coal powder screening module, the coal powder distribution module, the coal powder reaction module, and the dust treatment module. One end of the water inlet pipe (19) is connected to one end of the water outlet pipe (20), and the connection point between the two is located inside the solar power supply structure (18). A water pipe is provided inside the catalytic reactor (8). One end of the water pipe is connected to the other end of the water inlet pipe (19), and the other end of the water pipe is connected to the other end of the water outlet pipe (20).

8. The reaction system for automatically grinding and distributing pulverized coal as described in claim 1, characterized in that, The coal powder screening module also includes a butterfly valve (2) and a second nitrogen tank (26). One end of the butterfly valve (2) is connected to the coal powder particle injector (1) through a pipe, and the other end of the butterfly valve (2) is connected to the mass flow controller (3) through a pipe. One end of the second nitrogen tank (26) is connected to the mass flow controller (3) through a pipe, and the other end of the second nitrogen tank (26) is connected to the particle screener (4) through a pipe.

9. The reaction system for automatically grinding and distributing pulverized coal as described in claim 1, characterized in that, The particle screen (4) is equipped with a screen with sieve holes, the diameter of which is 10 mm.

10. The reaction system for automatically grinding and distributing pulverized coal as described in claim 1, characterized in that, The three-way divider (7) includes: a dividing shell (27), a dividing baffle (17), a first branch pipe (28), a second branch pipe (29), and a third branch pipe (30). The dividing baffle (17) is rotatably disposed inside the dividing shell (27) and divides the interior of the dividing shell (27) into a first dividing cavity, a second dividing cavity, and a third dividing cavity. The first dividing cavity is used to accommodate particles (23) of the first diameter, the second dividing cavity is used to accommodate particles (24) of the second diameter, and the third dividing cavity is used to accommodate particles (25) of the third diameter. One end of the first branch pipe (28) is connected to the first diversion cavity, one end of the second branch pipe (29) is connected to the second diversion cavity, and one end of the third branch pipe (30) is connected to the third diversion cavity. The other ends of the first branch pipe (28), the second branch pipe (29) and the third branch pipe (30) are all connected to a main pipe (31) and are connected to the particle feed inlet (9) through the main pipe (31). A particle controller (22) is provided in the first branch pipe (28), the second branch pipe (29) and the third branch pipe (30).

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