A frozen coal ultra-high pressure liquid jet treatment device

Abstract

The present application discloses a frozen coal ultra-high pressure liquid jet treatment device, which is arranged in front of a car tipper and comprises a water storage tank, an ultra-high pressure liquid jet device and a high pressure nozzle assembly, wherein the high pressure nozzle assembly is arranged on the cross beam of a movable gantry structure, and the movable gantry structure is arranged above the coal transport carriage, and the movable gantry structure can move along the length direction of the coal transport carriage, and adopts ultra-high pressure liquid jet technology, and can realize efficient frozen coal crushing with extremely low water volume, thereby improving the versatility and flexibility of the equipment, and the use of the ultra-high pressure liquid jet device and the water storage tank enables the whole system to adjust the water temperature and the jet pressure according to actual needs, so as to meet the requirements of different types of frozen coal treatment, and performs well in terms of water volume control, high efficiency, cost reduction, carriage protection, environmental protection, dust reduction and rapid thawing, etc., and is of great significance for improving the efficiency of frozen coal unloading and reducing operating costs.

Description

Technical Field

[0001] The present application belongs to the field of railway coal unloading equipment, and in particular to a frozen coal ultra-high pressure liquid jet treatment device. Background Art

[0002] The main reason for coal freezing on trains in winter is that the water content of the coal is high, coupled with low temperatures and long transportation time along the way, which causes the coal and the wagon to freeze. Secondary unloading or direct delivery to the manual unloading line for manual or mechanical breaking of frozen coal, and manual unloading and cleaning. This greatly prolongs the time for loading and unloading, increases safety risks, reduces unloading efficiency, and doubles the delay fees and manual unloading fees.

[0003] At present, there are several main methods for cleaning frozen coal: 1. Build a steam thawing warehouse. In the coal unloading area, build a steam thawing warehouse of considerable capacity, let the carriages loaded with frozen coal enter the warehouse first, and then unload the coal after the coal is thawed. However, the construction of a steam thawing warehouse requires a large amount of capital investment, including land, building materials, equipment purchase and installation costs. Moreover, the steam thawing process is relatively slow, and it takes a long time to completely thaw the frozen coal, consuming a lot of steam energy and extending the coal unloading cycle. 2. Electromagnetic thawing, using the special properties of electromagnetic waves (mainly microwaves) to heat and thaw frozen coal, but the equipment cost is high, and due to the unevenness of factors such as the shape, density and water content of the frozen coal, the heat distribution is uneven during the thawing process, resulting in uneven thawing. Long-term or high-intensity electromagnetic wave radiation will have a certain impact on the coal quality. 3. Electric far-infrared heating: the car body is first driven into a warehouse equipped with a far-infrared heater, and the car body is heated by radiation and air convection. After a certain period of time, it enters the dumper for operation. This method consumes too much electricity and has low heating efficiency. 4. The single-bucket loader breaks and loosens the frozen coal in the car body. After the dumper unloads, the remaining frozen coal is manually cleaned. This method requires manual participation in cleaning the remaining frozen coal, which is labor-intensive and inefficient. Due to the hard texture of frozen coal, manual cleaning may not be able to completely remove all frozen coal, affecting subsequent operations. The problem of frozen coal unloading has greatly reduced the amount of coal transportation in winter. It is urgent to study efficient and low-cost methods for handling frozen coal. Summary of the invention

[0004] The invention provides a frozen coal ultra-high pressure liquid jet treatment device, which is used to solve the problems of low efficiency, high energy consumption and high cost of existing frozen coal unloading.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A frozen coal ultra-high pressure liquid jet treatment device is arranged in front of a car tipper, comprising a water storage tank, an ultra-high pressure liquid jet device and a high pressure nozzle assembly, wherein the high pressure nozzle assembly is arranged on the cross beam of a movable gantry structure, and the movable gantry structure is arranged above the coal transport carriage. The movable gantry structure can move along the length direction of the coal transport carriage. Liquid with a certain temperature in the water storage tank is pressurized by the ultra-high pressure liquid jet device and sprayed out through the high pressure nozzle assembly to impact the frozen coal in the coal transport carriage to achieve crushing of the frozen coal.

[0007] The ultra-high pressure liquid jet treatment device for frozen coal of the present application adopts ultra-high pressure liquid jet technology and can realize efficient frozen coal crushing under extremely low water volume. The design of the movable gantry structure enables the high-pressure nozzle assembly to move along the length direction of the coal transport carriage and adapt to carriages of different lengths and widths, thereby improving the versatility and flexibility of the equipment. The use of ultra-high pressure liquid jet equipment and water storage tanks enables the entire system to adjust the water temperature and jet pressure according to actual needs to meet the requirements of different types of frozen coal treatment. It performs well in terms of water volume control, high efficiency, cost reduction, carriage protection, environmental protection, dust reduction and rapid thawing, and is of great significance for improving the efficiency of frozen coal unloading and reducing operating costs.

[0008] In a preferred implementation, the high-pressure nozzle assembly continuously jets to impact, cut and crush the frozen coal. Continuous impact, cutting and crushing can maintain a continuous effect on the frozen coal, and the water jet continuously acts on the inside of the frozen coal, with a high crushing efficiency, and can complete the thawing and crushing tasks faster.

[0009] In a preferred implementation, the high-pressure nozzle assembly includes a plurality of high-pressure nozzles evenly arranged along the direction of the crossbeam. The high-pressure nozzles are evenly arranged along the direction of the crossbeam and can move horizontally along the crossbeam, cooperating with the movement of the mobile gantry so that the high-pressure liquid jets ejected from the high-pressure nozzles form a cross-crushing effect in the horizontal and vertical directions, cross-crushing the coal into a grid shape, and the grid size is adapted to the size of the grate of the tipping grate.

[0010] In a preferred implementation, the high-pressure nozzle assembly impacts and cuts the frozen coal, which can effectively control the energy consumption of the water jet and can achieve targeted crushing, so that each impact cutting can accurately act on a specific area of ​​the frozen coal, helping to achieve a more refined crushing effect.

[0011] In a preferred implementation, the high-pressure nozzle changes the pressure through a control device to achieve jet impact, variable-pressure water injection and pressurized cavitation, forming a strong water flow impact and improving the thawing and crushing effects.

[0012] In a preferred implementation, the high-pressure nozzle assembly can be lifted and moved relative to the crossbeam to approach the frozen coal in the coal carriage to impact, cut and crush the frozen coal at different depths.

[0013] In a preferred implementation, the working pressure of the high-pressure nozzle assembly is 200 MPa to 480 MPa.

[0014] Under this working pressure, the high-pressure nozzle assembly can generate enough water jet impact force to quickly penetrate the frozen coal ice layer and achieve efficient thawing. This helps to shorten the thawing time and improve the processing efficiency. By accurately controlling the working pressure, it is possible to avoid energy waste and equipment wear caused by excessive pressure, or to avoid the impact pressure being too low due to insufficient pressure and the inability to effectively break the frozen coal. At the same time, a reasonable working pressure range can also help reduce operating costs and improve economic benefits.

[0015] In a preferred implementation, a heat exchanger is also included. The water in the water tank is heated by heat exchange in the heat exchanger, and the temperature T after heat exchange satisfies 50°C≤T≤65°C.

[0016] In this temperature range, by precisely controlling the temperature of the liquid medium after heat exchange, it is possible to reduce energy consumption while ensuring the thawing effect. This helps to reduce operating costs during the thawing process and improve economic benefits.

[0017] In a preferred implementation, antifreeze is added into the water storage tank and mixed with water to form a mixed liquid.

[0018] First, it lowers the freezing point of water, so that the mixture can remain liquid at a lower temperature, thereby effectively preventing the liquid injected into the frozen coal from refreezing during or after the thawing process. Second, when the mixture acts on the frozen coal and successfully thaws it, the remaining antifreeze components will remain on the surface and inside of the coal, forming a protective layer, reducing the risk of refreezing of the coal in a low-temperature environment and improving the thawing ability of the high-pressure nozzle assembly.

[0019] In a preferred implementation, the mobile gantry structure is also provided with an AI visual recognition device and infrared thermal imaging to monitor the thawing of the coal in the carriage, and accordingly control the high-pressure nozzle assembly to perform repeated impact, cutting and crushing operations on the unthawed areas.

[0020] Since there is a significant temperature difference between thawed coal and unthawed coal, this feature makes AI visual recognition + infrared thermal imaging an effective tool for monitoring the thawing situation. By analyzing the infrared thermal imaging images, it is possible to accurately identify which areas of the coal in the carriage have thawed and which areas are still frozen. This provides accurate positioning information for subsequent high-pressure nozzle assembly operations. Based on the monitoring results of AI visual recognition + infrared thermal imaging, the control system can intelligently dispatch the high-pressure nozzle assembly to perform repeated impact, cutting and crushing operations on the unthawed areas.

[0021] The above structure has the following beneficial effects:

[0022] 1. The frozen coal ultra-high pressure liquid jet treatment device of the present application has a significant effect in controlling the water volume. It adopts ultra-high pressure liquid jet technology, which can control the water consumption to the maximum extent while maintaining powerful crushing and cutting capabilities, and meets the moisture content requirements of power and metallurgical fuel coal.

[0023] 2. The frozen coal ultra-high pressure liquid jet treatment device of the present application heats up the liquid medium through a heat exchanger or an electric heater. This step is more efficient in energy utilization compared to directly using heat sources such as high-temperature steam. At the same time, although the pressurization process of the ultra-high pressure liquid jet equipment requires a certain amount of energy input, due to its small water consumption and high crushing efficiency, it generally reduces the energy consumption required for unit frozen coal crushing.

[0024] 3. The frozen coal ultra-high pressure liquid jet treatment device of the present application has low water volume and energy consumption control and can process the frozen coal directly in front of the dumper, reducing the labor cost of manual crushing and cleaning, and also shortening the time of the entire unloading process, further reducing the overall cost.

[0025] 4. The ultra-high pressure liquid jet treatment device for frozen coal in this application has extremely high treatment efficiency. The traditional steam thawing method may take several hours or even longer, while the ultra-high pressure jet device can complete the thawing task within 20 minutes, greatly speeding up the unloading speed of frozen coal. This not only improves work efficiency, but also reduces the time the carriage stays at the station, improving the unloading efficiency.

[0026] 5. The frozen coal ultra-high pressure liquid jet treatment device of the present application, due to the working principle and physical properties of the ultra-high pressure liquid jet, only acts on the frozen coal medium to break it, and will not cause any damage to the carriage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 A schematic structural diagram of a schematic implementation of the ultra-high pressure liquid jet treatment device for frozen coal of the present application is depicted;

[0029] Figure 2 A schematic diagram of the three-dimensional structure of a schematic implementation of the frozen coal ultra-high pressure nozzle assembly of the present application is depicted;

[0030] Figure 3 A schematic diagram of a state in which a high-pressure nozzle of the present application impacts frozen coal is depicted;

[0031] Description of labels:

[0032] 1- water storage tank; 10- antifreeze tank; 2- heat exchanger; 3- ultra-high pressure liquid jet equipment; 4- high pressure nozzle assembly; 40- high pressure nozzle; 41- main pipeline; 5- mobile gantry structure; 50- cross beam; 51- vertical beam; 53- gantry guide rail; 6- coal carriage; 7- pipeline. DETAILED DESCRIPTION

[0033] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0034] The present invention will be described below in conjunction with the accompanying drawings.

[0035] The specific plans adopted are:

[0036] like Figure 1-3 As shown, the present invention provides a frozen coal ultra-high pressure liquid jet treatment device, which is arranged in front of a dumper, and includes a water tank 1, an ultra-high pressure liquid jet device 3 and a high-pressure nozzle assembly 4. The high-pressure nozzle assembly is arranged on a cross beam 50 of a movable gantry structure, and the coal transport carriage is arranged between two vertical beams 51 of the movable gantry structure 5. The movable gantry structure 5 can move along the length direction of the coal transport carriage 6 through a gantry guide rail 53. Water with a certain temperature in the water tank 1 is pressurized by the ultra-high pressure liquid jet device and sprayed out through the high-pressure nozzle assembly to impact the frozen coal in the coal transport carriage to achieve crushing of the frozen coal.

[0037] The ultra-high pressure liquid jet treatment device for frozen coal of the present application adopts ultra-high pressure liquid jet technology and can realize efficient frozen coal crushing under extremely low water volume. The design of the movable gantry structure enables the high-pressure nozzle assembly to move along the length direction of the coal transport carriage and adapt to carriages of different lengths and widths, thereby improving the versatility and flexibility of the equipment. The use of ultra-high pressure liquid jet equipment and water storage tanks enables the entire system to adjust the water temperature and jet pressure according to actual needs to meet the requirements of different types of frozen coal treatment. It performs well in terms of water volume control, high efficiency, cost reduction, carriage protection, environmental protection, dust reduction and rapid thawing, and is of great significance for improving the efficiency of frozen coal unloading and reducing operating costs.

[0038] Compared with existing thawing methods, such as long-term use of steam heating, this solution only consumes about 80L of water to treat a frozen coal carriage, and can strictly guarantee the moisture content of the fuel coal entering the factory.

[0039] At the same time, compared with steam thawing which takes several hours or even longer, this solution can shorten the thawing of frozen coal to about 20 minutes, reducing the operating time and energy consumption of the equipment, greatly improving the unloading efficiency, further reducing the overall cost, reducing the high delay fees and labor costs caused by waiting for thawing, and improving the overall operating efficiency.

[0040] As the first preferred embodiment of the present application, the high-pressure nozzle assembly 4 continuously jets to impact, cut and crush the frozen coal. The continuous impact, cutting and crushing can maintain a continuous effect on the frozen coal. The water jet continuously acts on the surface and inside of the frozen coal, and the crushing efficiency is high, which can complete the thawing task faster.

[0041] Furthermore, the high-pressure nozzle assembly includes a plurality of high-pressure nozzles 40 evenly arranged along the direction of the beam, the high-pressure nozzles are evenly arranged along the direction of the beam, and the plurality of high-pressure nozzles are evenly arranged along the direction of the beam. The plurality of high-pressure nozzles are arranged in a main pipeline 41, and the main pipeline is connected to the ultra-high pressure liquid jet device 3 through a pipeline 7.

[0042] The high-pressure nozzle 40 can move horizontally along the crossbeam. The specific implementation method is the existing gantry moving structure, which can be realized through sliders and motor slide rails. The high-pressure nozzle moves horizontally to expand the range of impacting frozen coal and ensure that the liquid medium can impact, cut and crush against the inner wall of the coal transport car. In conjunction with the movement of the mobile gantry, the high-pressure liquid jet ejected from the high-pressure nozzle forms a cross-crushing effect in the horizontal and vertical directions, and cross-crushes the coal in the car into a grid shape. The grid size is adapted to the size of the tipping grate (such as 300x300). The spacing and moving distance of the high-pressure nozzles are adjusted to ensure that the size of the crushed coal blocks is moderate. When the size of the coal blocks matches the grate of the tipping grate, the coal blocks can pass through the grate more smoothly to enter the next process.

[0043] As a second preferred embodiment of the present application, the high-pressure nozzle assembly 4 intermittently impacts, cuts and crushes the frozen coal. Through intermittent impact operation, the energy consumption of the water jet can be effectively controlled, and targeted crushing can be achieved. An electromagnetic valve corresponding to the high-pressure nozzle is arranged in the main pipeline, so that each impact can accurately act on a specific area of ​​the frozen coal, which helps to achieve a more refined crushing effect.

[0044] Furthermore, the high-pressure nozzle changes the pressure through the control device to achieve jet impact, variable pressure water injection and supercharged cavitation, forming a strong water flow impact in the hole, combined with the cavitation effect, further improving the thawing and crushing effect. Specifically, first, the high-pressure nozzle sprays water at extremely high pressure and speed, directly impacting the surface of the frozen coal to form an initial hole. The high kinetic energy of the high-pressure liquid jet can quickly penetrate the hard surface of the frozen coal. After the impact is completed, the pressure is reduced by adjusting the control device to inject a certain amount of water into the hole. This step is to form a certain water environment in the hole, increase the amount of liquid in the hole, improve the effect of subsequent supercharged cavitation, and prepare for subsequent supercharged cavitation. After that, the pressure at the nozzle outlet is quickly increased, so that the high-pressure water flow is injected into the existing water in the hole again. In this process, due to the effect of the pressure difference, the water flow produces a strong impact in the hole. Under the action of the high-pressure jet, bubbles are generated in the water in the hole, and these bubbles gradually increase and burst with the impact of the jet, releasing energy. The strong impact force and heat generated during the cavitation rupture process help to further break and melt the frozen coal.

[0045] This solution makes the crushing effect of frozen coal more significant by precisely controlling intermittent jets, high-pressure jets and the strong impact force and heat generated by cavitation effect. Not only is the crushing speed fast, but the crushing particle size is also uniform, which is helpful for subsequent processing. During the whole process, the steps of high-pressure jet impact, variable pressure water injection, pressurized cavitation and so on are closely linked, and the interval time is extremely short, forming a continuous and efficient impact process, which greatly improves work efficiency.

[0046] As a preferred embodiment of the present application, the high-pressure nozzle assembly 4 can be lifted and moved relative to the crossbeam, and its implementation method is existing, such as a motor screw lifting mechanism, and the high-pressure nozzle assembly is close to the frozen coal in the coal carriage. The design that the high-pressure nozzle assembly can be lifted and moved relative to the crossbeam enhances its ability to handle frozen coal of different depths. Specifically, first, after the jet water impacts the frozen coal, it diffuses and flows into the coal gap to melt the ice, and can thaw the frozen coal of a certain thickness. For example, when the nozzle is 50cm away from the surface of the coal, the jet water will first thaw the frozen coal on the surface, and gradually affect the frozen coal at a deeper level as the water diffuses and penetrates, but due to the long distance, the thawing depth will be relatively limited, and when the high-pressure nozzle 40 drops to 20cm from the surface of the coal, the jet water can more directly impact and penetrate into the frozen coal, thereby covering and thawing a larger range of frozen coal, including the frozen coal at the bottom, and by reasonably adjusting the height position of the high-pressure nozzle assembly and the parameters of the jet water, the entire frozen coal can be effectively thawed within the depth range of the carriage.

[0047] As a preferred embodiment of the present application, the working pressure of the high-pressure nozzle assembly is 200MPa to 480MPa. Under appropriate working pressure, the high-pressure nozzle assembly can generate sufficient water jet impact force to quickly penetrate the ice layer on the surface of the frozen coal and achieve efficient thawing. This helps to shorten the thawing time and improve processing efficiency. By precisely controlling the working pressure, it is possible to avoid energy waste and equipment wear caused by excessive pressure, or to avoid the inability to effectively crush the frozen coal due to the impact pressure being too low due to too low pressure. At the same time, a reasonable working pressure range can also help reduce operating costs and improve economic benefits.

[0048] As a preferred embodiment of the present application, a heat exchanger 2 is also included. The water in the water storage tank is heated by heat exchange in the heat exchanger. The temperature T after heat exchange satisfies 50°C≤T≤65°C. The combined use of the heat exchanger and the ultra-high pressure liquid jet device enables the entire system to adjust the water temperature and jet pressure according to actual needs. 50°C to 65°C is a relatively suitable temperature range. By accurately controlling the temperature of the liquid medium after heat exchange, energy consumption can be reduced while ensuring the thawing effect. This helps to reduce the operating cost during the thawing process and improve economic benefits.

[0049] In addition, the heat exchanger can be arranged inside the water tank to reduce the floor space. Specifically, the heat exchanger includes heat exchange tubes arranged in a serpentine / spiral shape and arranged in the water tank. The use of heat exchange tubes arranged in a serpentine or spiral shape can maximize the heat exchange area, increase the contact time between the fluid and the tube wall, and the heat exchange efficiency.

[0050] In a preferred implementation, the water storage tank 1 and the antifreeze tank 10 are connected by a pipeline to add antifreeze and mix with water to form a mixed liquid. First, the freezing point of water is lowered, so that the mixed liquid can still remain liquid at a lower temperature, thereby effectively preventing the liquid injected into the coal from refreezing during or after the thawing process. Second, when the mixed liquid is injected into the frozen coal and successfully thawed, a protective layer is formed, which reduces the risk of refreezing of the coal blocks in a low-temperature environment and improves the thawing ability of the high-pressure nozzle assembly.

[0051] As a preferred embodiment of the present application, the mobile gantry structure 5 is also provided with an AI visual recognition device and infrared thermal imaging to monitor the thawing of the coal in the carriage, and accordingly control the high-pressure nozzle assembly to come to the unthawed area for impact cutting and crushing.

[0052] AI visual recognition + infrared thermal imaging is not shown in the figure. It is an existing device that can capture and display the temperature distribution of coal in the carriage in real time. Since there is a significant temperature difference between thawed coal and unthawed coal, this feature makes AI visual recognition + infrared thermal imaging an effective tool for monitoring thawing conditions. By analyzing infrared thermal images, it is possible to accurately identify which areas of the coal in the carriage have been thawed and which areas are still frozen. This provides accurate positioning information for subsequent high-pressure nozzle assembly operations. Based on the monitoring results of AI visual recognition + infrared thermal imaging, the control system can intelligently dispatch the high-pressure nozzle assembly to repeat operations on unthawed areas. The high-pressure nozzle assembly can first continuously jet and crush the frozen coal into a grid, and then impact the frozen coal in a targeted intermittent impact crushing manner after infrared thermal imaging monitoring, effectively accelerating the thawing process and breaking up large pieces of frozen coal.

[0053] Through AI visual recognition + precise monitoring of infrared thermal imaging devices and intelligent operation of high-pressure nozzle components, the need for manual intervention is reduced, the safety risks during the operation are reduced, and the efficiency of coal thawing and crushing can be significantly improved. This helps to shorten the thawing time, reduce energy consumption and costs. This solution has broad application prospects and promotion value in frozen coal unloading.

[0054] Anything not described in the present invention can be achieved by adopting or drawing on existing technologies.

[0055] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A frozen coal ultra-high pressure liquid jet treatment device, arranged in front of a dumper, characterized in that: It includes a water storage tank, an ultra-high pressure liquid jet device and a high-pressure nozzle assembly. The high-pressure nozzle assembly is arranged on the crossbeam of a movable gantry structure. The movable gantry structure is arranged above the coal carriage. The movable gantry structure can move along the length direction of the coal carriage. Liquid with a certain temperature in the water storage tank is pressurized by the ultra-high pressure liquid jet device and sprayed through the high-pressure nozzle assembly to impact the frozen coal in the coal carriage to achieve the crushing of the frozen coal. The high-pressure nozzle assembly intermittently impacts, cuts and crushes the frozen coal; the high-pressure nozzle assembly changes the pressure through a control device to achieve jet impact, variable-pressure water injection and pressurized cavitation; during jet impact, the high-pressure nozzle sprays water to directly impact the surface of the frozen coal to form an initial hole; after the impact is completed, the control device is used to adjust and reduce the pressure, and a certain amount of water is injected into the hole to form a water environment in the hole; then the pressure at the outlet of the high-pressure nozzle is rapidly increased, so that the high-pressure water flow is injected into the water already in the hole again, and due to the effect of the pressure difference, bubbles are generated in the water in the hole, and the bubbles gradually increase and burst with the impact of the jet, releasing heat, generating a strong impact force on the frozen coal, and improving the thawing and crushing effect; The high-pressure nozzle assembly can be lifted and moved relative to the crossbeam to approach the frozen coal in the coal transport carriage to impact, cut and crush the frozen coal at different depths.

2. The frozen coal ultra-high pressure liquid jet treatment device according to claim 1, characterized in that: The high-pressure nozzle assembly includes a plurality of high-pressure nozzles evenly arranged along the direction of the crossbeam. The high-pressure nozzles are evenly arranged along the direction of the crossbeam and can move horizontally along the crossbeam, and cooperate with the movement of the mobile gantry to make the high-pressure liquid jets ejected by the high-pressure nozzles form a cross-crushing effect in the horizontal and vertical directions, and cross-crush the frozen coal into a grid shape, and the grid size is adapted to the grid size of the tipping grate.

3. The frozen coal ultra-high pressure liquid jet treatment device according to claim 1, characterized in that: The working pressure of the high-pressure nozzle assembly is 200MPa to 480MPa.

4. The frozen coal ultra-high pressure liquid jet treatment device according to claim 1, characterized in that: It also includes a heat exchanger. The water in the water tank is heated by heat exchange in the heat exchanger. The temperature T after heat exchange satisfies 50℃≤T≤65℃.

5. The frozen coal ultra-high pressure liquid jet treatment device according to claim 1, characterized in that: Antifreeze is added into the water storage tank and mixed with water to form a mixed liquid.

6. The frozen coal ultra-high pressure liquid jet treatment device according to claim 1, characterized in that: The mobile gantry structure is also equipped with an AI visual recognition device and infrared thermal imaging to monitor the thawing of the coal in the carriage, and accordingly control the high-pressure nozzle assembly to repeatedly impact, cut and crush the unthawed areas.

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