Coal water slurry preparation device

Abstract

The application provides a coal water slurry preparation device, which comprises a slurry preparation unit and a slurry leakage collection unit; the slurry leakage collection unit comprises a first raw water inlet, a slurry leakage inlet and a slurry leakage circulation outlet, and the slurry preparation unit comprises a second raw water inlet and a slurry leakage outlet; the first raw water inlet is used for receiving external raw water; the slurry leakage outlet is communicated with the slurry leakage inlet; and the slurry leakage circulation outlet is communicated with the second raw water inlet. The preparation system can not only effectively solve the problem of slurry leakage in the preparation process of coal water slurry, realize slurry leakage recycling, but also effectively avoid slurry leakage settlement and improve the power of slurry leakage recycling.

Description

TECHNICAL FIELD

[0001] The present application relates to a coal water slurry preparation device, belonging to the field of coal chemical production. BACKGROUND

[0002] The wet gasification process using coal water slurry as raw material is the main technology adopted in the current new coal chemical projects in China. There are more than 450 coal water slurry gasifiers in operation nationwide, with an annual coal water slurry output of more than 20 million tons. At the same time, there are also a large number of coal water slurry boilers in coastal areas, which are also major consumers of coal water slurry. Therefore, the coal water slurry preparation technology is particularly important. The current preparation technology can be divided into two categories: rod milling and ball milling. However, both processes face the problem of slurry running during operation.

[0003] Slurry running makes it difficult to increase the concentration of coal slurry, becoming the biggest factor restricting the concentration of coal water slurry. The slurry running process also causes serious waste of raw coal resources and water resources. At the same time, the slurry running phenomenon also increases the workload of the operators, becoming one of the core reasons for the dirty, messy, and poor operation of the slurry preparation device.

[0004] However, although the collection device is used to recycle the coal water slurry in the current coal water slurry preparation process. But the problems of slurry running easy to settle, lack of recycling power in the collection device still need to be solved. SUMMARY

[0005] The present application provides a coal water slurry preparation device, which not only realizes the effective recycling of slurry running, but also improves the flowability of slurry running and the recycling power.

[0006] The present application provides a coal water slurry preparation device, which includes a slurry preparation unit and a slurry running collection unit.

[0007] The slurry running collection unit includes a first raw water inlet, a slurry running inlet, and a slurry running circulation outlet. The slurry preparation unit includes a second raw water inlet and a slurry running outlet.

[0008] The first raw water inlet is used to receive external raw water. The slurry running outlet is in communication with the slurry running inlet. The slurry running circulation outlet is in communication with the second raw water inlet.

[0009] The preparation device as described above further includes a spraying unit. The spraying outlet of the spraying unit is in communication with the spraying inlet of the slurry preparation unit. The spraying inlet is oppositely arranged with the slurry preparation part in the slurry preparation unit.

[0010] The preparation device as described above further includes a spraying flow adjusting unit. The spraying outlet is in communication with the spraying inlet through the spraying flow adjusting unit.

[0011] The preparation apparatus described above further includes an additive storage unit, the additive outlet of which is connected to the raw material inlet of the pulping unit.

[0012] The preparation apparatus described above further includes an additive flow rate regulating unit, and the additive outlet is connected to the raw material inlet through the additive flow rate regulating unit.

[0013] The preparation apparatus described above also includes a control unit and a slurry monitoring unit;

[0014] The slurry leakage monitoring unit is located at the bottom of the slurry leakage collection unit and is electrically connected to the control unit;

[0015] The control unit is electrically connected to at least one of the spray flow regulating unit and the additive flow regulating unit.

[0016] The preparation apparatus described above further includes a drive unit; the slurry circulation outlet is connected to the second raw material water inlet through the drive unit.

[0017] In the preparation apparatus described above, the pulping unit and the pulp collection unit are arranged sequentially in the direction of gravity.

[0018] The preparation apparatus described above also includes a coal-water slurry storage unit;

[0019] The storage inlet of the coal-water slurry storage unit is connected to the coal-water slurry output outlet of the slurry preparation unit.

[0020] The preparation apparatus described above includes a slurry collection unit comprising a slurry collection tank and a stirring element disposed inside the slurry collection tank;

[0021] The first raw water inlet and the slurry inlet are located at the top of the slurry collection tank, and a drain outlet is also provided at the bottom of the slurry collection tank.

[0022] The preparation apparatus provided by the present invention, by setting up a slurry collection unit and a first raw material water inlet of the slurry collection unit, improves the fluidity of the slurry in the slurry collection unit by using the raw material water entering the slurry collection unit through the first raw material water inlet, effectively avoiding the sedimentation of solid particles in the slurry in the slurry collection unit. At the same time, the raw material water can drive the slurry, increasing the motivation for the slurry to enter the pulping unit for recycling. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an embodiment of the coal-water slurry preparation apparatus of the present invention;

[0024] Figure 2 This is a schematic diagram of another embodiment of the coal-water slurry preparation apparatus of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1: Pulping unit; 2: Pulping collection unit; 3: Raw coal weighing unit; 4: Spraying unit; 5: Spraying flow rate adjustment unit; 6: Additive storage unit; 7: Additive flow rate adjustment unit; 8: Drive unit; 9: Coal-water slurry storage unit. Detailed Implementation

[0027] To enable those skilled in the art to better understand the method of the present invention, the present invention will be further described in detail below. The specific embodiments listed below are merely descriptions of the principles and features of the present invention, and the examples given are only for explaining the present invention and are not intended to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0028] Figure 1 This is a schematic diagram of an embodiment of the coal-water slurry preparation apparatus of the present invention. Figure 2 This is a schematic diagram of another embodiment of the coal-water slurry preparation apparatus of the present invention. Figure 1 , Figure 2 As shown, the coal-water slurry preparation device provided by the present invention includes a slurry preparation unit 1 and a slurry collection unit 2; the slurry collection unit 2 includes a first raw material water inlet, a slurry inlet and a slurry circulation outlet, and the slurry preparation unit 1 includes a second raw material water inlet and a slurry outlet; the first raw material water inlet is used to receive external raw material water, the slurry outlet is connected to the slurry inlet, and the slurry circulation outlet is connected to the second raw material water inlet.

[0029] The coal-water slurry preparation apparatus of the present invention is used to prepare coal-water slurry by grinding a system including raw water and raw coal as the main raw materials.

[0030] Specifically, the pulping unit 1 is used to process various raw materials into coal-water slurry. For example, the raw materials include raw water and raw coal. The second raw water inlet of the pulping unit 1 is used to receive raw water. During the grinding and preparation of coal-water slurry in the pulping unit 1, slurry leakage may occur. The slurry leakage outlet of the pulping unit 1 is used to discharge the leaked slurry.

[0031] The pulp collection unit 2 is used to receive external raw water and collect the pulp generated by the preparation unit for pulp reuse. Specifically, the first raw water inlet receives raw water from the outside, which is then collected by the pulp collection unit 2 and transported to the pulping unit 1 to perform its pulping function. The pulp inlet receives pulp that may be generated during the application of the pulping unit 1; specifically, the pulp outlet and the pulp inlet are connected to collect the pulp. The pulp circulation outlet transports the mixture, including the raw water entering the pulping unit 1 through the first raw water inlet and the pulp entering the pulp collection unit 2 through the pulp inlet, to the pulping unit, thus ensuring the supply of raw water to the pulping unit 1 and preventing waste of pulping raw materials.

[0032] In detail, raw water continuously enters the slurry collection unit 2 through the first raw water inlet, and then enters the pulping unit 1 through the slurry circulation outlet and the second raw water inlet. In the pulping unit, the raw water and other raw materials (such as coal) are ground together to prepare coal-water slurry, and slurry leakage may occur at the same time.

[0033] The generated slurry enters the slurry collection unit 2 through the slurry outlet and slurry inlet; the raw water continuously enters the slurry collection unit 2 through the first raw water inlet. In the slurry collection unit 2, the raw water and the mixture formed by the slurry enter the pulping unit 1 through the slurry circulation outlet and the second raw water inlet, and are used as pulping raw materials for pulping treatment, so as to realize the recycling of the slurry.

[0034] It is understood that the slurry preparation unit 1 requires raw coal as a raw material, therefore, the coal-water slurry preparation unit 1 may also include a raw coal inlet. This invention does not limit the specific location of the raw coal inlet; the raw coal inlet can be set separately or it can be set as the same inlet as the second raw water inlet.

[0035] This invention does not limit the configuration of other units. For example, a raw coal weighing unit 3 can also be provided. The raw coal weighing unit 3 has a first coal inlet and a first coal outlet, and the first coal outlet is connected to the raw coal inlet of the pulping unit 1. After the raw coal enters the raw coal weighing unit 3 through the first coal inlet, it enters the pulping unit 1 through the first coal outlet and the raw coal inlet according to the set weight. The setting of the raw coal weighing unit 3 can accurately control the amount of raw coal used and effectively ensure the quality of coal-water slurry.

[0036] This invention achieves effective collection of runoff slurry by setting up a runoff slurry collection unit 2, avoiding the adverse environmental impact of runoff slurry overflow and reducing the cost of manual runoff slurry handling. At the same time, the preparation device provided by this invention sets the first raw material water inlet in the runoff slurry collection unit 2, and uses the raw material water entering the runoff slurry collection unit through the first raw material water inlet to flush the runoff slurry in the runoff slurry collection unit 2, improving the flowability of the runoff slurry and preventing the sedimentation of solid particles in the runoff slurry. The flow rate of the raw material water is used to drive the runoff slurry into the pulping unit 1, realizing the recycling and reuse of runoff slurry, and enabling the coal-water slurry preparation process to achieve a virtuous cycle.

[0037] In one specific embodiment, the preparation apparatus of the present invention further includes a spraying unit 4, the spraying outlet of the spraying unit 4 being connected to the spraying inlet of the pulping unit 1, and the spraying inlet being disposed opposite to the pulping component in the pulping unit 1.

[0038] The pulping components in pulping unit 1 refer to the devices used to screen materials, such as drum screens. When preparing coal-water slurry in pulping unit 1, if the balance between raw coal and raw water is disrupted, the pulping components may become clogged, leading to slurry leakage and potential damage to the components.

[0039] Spray unit 4 is used to convey and spray the spray medium onto the pulping container to rinse it and prevent clogging and pulp leakage. To avoid introducing other impurities, water is selected as the spray medium in this invention, and is referred to as spray water for easy distinction.

[0040] In detail, the spray outlet of the spray unit 4 is connected to the spray inlet of the pulping unit 1 to provide spray medium to the pulping unit 1. The spray inlet and the pulping component in the pulping unit 1 are set opposite to each other, meaning that the spray medium entering the pulping unit 1 through the spray inlet is sprayed in the direction of the pulping component.

[0041] Spray water enters the pulping unit 1 through the spray outlet of spray unit 4 and the spray inlet of pulping unit 1. Inside the pulping unit 1, the spray water is sprayed toward the pulping components.

[0042] It is understandable that the sprayed water entering the pulping unit 1 will become one of the raw materials for the preparation of coal-water slurry and participate in the production of coal-water slurry.

[0043] Spraying the slurry preparation components with water can not only improve the fluidity of the coal-water slurry in slurry preparation unit 1 by rinsing, reduce slurry leakage, and promote a virtuous cycle of slurry leakage recycling, but also prevent clogging and damage to the slurry preparation components in slurry preparation unit 1.

[0044] Furthermore, the preparation apparatus also includes a spray flow rate adjustment unit 5, and the spray outlet is connected to the spray inlet through the spray flow rate adjustment unit 5.

[0045] As mentioned above, the spray water will be used as one of the raw materials for the preparation of coal-water slurry, so the flow rate of the spray water needs to be controlled. The spray flow rate adjustment unit 5 is used to adjust the flow rate of the spray water in the spray unit 4, and the spray outlet is connected to the spray inlet through the spray flow rate adjustment unit 5.

[0046] In detail, the spray water enters the spray flow rate adjustment unit 5 through the spray outlet, and after being adjusted by the spray flow rate adjustment unit 5, it enters the spray inlet of the pulping unit 1 at a set flow rate and is sprayed toward the pulping component of the pulping unit 1 at a set flow rate.

[0047] By setting up the spray flow rate adjustment unit 5, it is possible not only to effectively control the flow rate of the spray water and dynamically suppress slurry runoff according to the actual situation, but also to accurately control the spray water volume and ensure the concentration of coal-water slurry.

[0048] In one specific embodiment, the preparation apparatus of the present invention further includes an additive storage unit 6, the additive outlet of the additive storage unit 6 being connected to the raw material inlet of the pulping unit 1.

[0049] As one of the raw materials for coal-water slurry preparation, additives can alter the surface properties of coal particles during the preparation process, promoting uniform dispersion of coal particles in the aqueous medium, improving the homogeneity of the coal-water slurry, and preventing slurry leakage. Additive storage unit 6 is used to store additives, providing a suitable storage environment and ensuring their stability.

[0050] Specifically, the additive outlet of the additive storage unit 6 is connected to the raw material inlet of the pulping unit 1. The additive enters the pulping unit 1 through the additive outlet of the additive storage unit 6 and the raw material inlet of the pulping unit 1 to participate in the coal-water slurry pulping process.

[0051] The additive storage unit 6 provides a good storage environment for additives, ensuring the stability of additives during the preparation of coal-water slurry and improving the quality of coal-water slurry.

[0052] Furthermore, it also includes an additive flow regulating unit 7, through which the additive outlet is connected to the raw material inlet.

[0053] The amount of additives directly affects the properties of the prepared coal-water slurry. The additive flow rate adjustment unit 7 is used to regulate the flow rate of the additives.

[0054] Specifically, the additive enters the additive flow regulation unit 7 through the additive outlet, and after the flow rate is adjusted in the additive flow regulation unit 7, it enters the pulping unit 1 through the raw material inlet according to the set flow rate.

[0055] By setting the additive flow rate adjustment unit 7, the flow rate of the additive can be effectively controlled, and the dosage of the additive can be adjusted according to the actual situation, effectively avoiding pulp runoff.

[0056] In one specific embodiment, the device of the present invention further includes a control unit (not shown in the figure) and a slurry leakage monitoring unit (not shown in the figure); the slurry leakage monitoring unit is located at the bottom of the slurry leakage collection unit 2 and is electrically connected to the control unit; the control unit is electrically connected to at least one of the spray flow rate adjustment unit 5 and the additive flow rate adjustment unit 7.

[0057] Manually monitoring slurry leakage and adjusting the corresponding spray water flow and additive flow is time-consuming, labor-intensive, and difficult to operate. The slurry leakage monitoring unit is used to monitor slurry leakage in real time and generate slurry leakage signals. Specifically, the slurry leakage monitoring unit monitors the cumulative amount of slurry leakage per unit time in the slurry leakage collection unit 2 to achieve real-time monitoring of slurry leakage and generate slurry leakage signals. The control unit is used to convert the received slurry leakage signals into instructions to adjust the spray water flow or additive flow, thereby achieving real-time adjustment of the overall device and reducing the occurrence of slurry leakage.

[0058] Specifically, the slurry monitoring unit is located at the bottom of the slurry collection unit 2 and is electrically connected to the control unit; while the control unit is electrically connected to the spray flow rate adjustment unit 5, or to the additive flow rate adjustment unit 7, or is electrically connected to both the spray flow rate adjustment unit 5 and the additive flow rate adjustment unit 7.

[0059] For example, when the slurry monitoring unit is electrically connected to the control unit, the control unit is electrically connected to the spray flow regulating unit 5 and the additive flow regulating unit 7.

[0060] When slurry leakage occurs in slurry collection unit 2, slurry leakage monitoring unit monitors the cumulative amount of slurry leakage per unit time in slurry collection unit 2 in real time and generates a slurry leakage signal. The slurry leakage signal is transferred to the control unit via circuit. When the control unit receives the slurry leakage signal, it generates a first instruction to control the spray flow rate adjustment unit 5 to increase the spray water flow rate through circuit, and generates a second instruction to control the additive flow rate adjustment unit 7 to increase the additive flow rate through circuit.

[0061] As the flow rate of spray water and the flow rate of additives increase, the uniformity of the coal-water slurry prepared in the slurry preparation unit 1 improves and the amount of slurry leakage decreases. At this time, the slurry leakage monitoring unit generates a second slurry leakage signal. This second slurry leakage signal is transferred to the control unit via the circuit. When the control unit receives the second slurry leakage signal, it generates a third instruction to control the spray flow rate adjustment unit 5 to reduce the spray water flow rate through the circuit, and generates a fourth instruction to control the additive flow rate adjustment unit 7 to reduce the additive flow rate through the circuit. The whole system is in a virtuous cycle.

[0062] This invention does not limit the specific type of the slurry monitoring unit and the control unit, or the specific circuit connection, as long as the above-mentioned electrical connection can be achieved.

[0063] By setting up a slurry leakage monitoring unit and a control unit, real-time monitoring of slurry leakage is achieved, improving the automation of coal-water slurry preparation, increasing process efficiency, and significantly reducing the cost of slurry leakage recycling.

[0064] In one specific embodiment, the preparation apparatus of the present invention further includes a drive unit 8; the pulp circulation outlet is connected to the drive unit 8 and the second raw material water inlet.

[0065] When relying solely on raw water to drive the pulp through the pulp circulation outlet and the second raw water inlet back to pulping unit 1, the required raw water flow rate is relatively high. The drive unit 8 is used to provide power for the mixture formed by the raw water and the pulp.

[0066] The mixed liquid from the pulp collection unit 2 enters the drive unit 8 through the pulp circulation outlet, and under the power of the drive unit 8, it enters the pulping unit 1 through the second raw material water inlet.

[0067] The installation of drive unit 8 can share the power demand in the slurry recycling process, reduce the power requirements on raw water, reduce the flow rate of raw water, and improve the operability of the device.

[0068] In one specific embodiment, the pulping unit 1 and the pulp collection unit 2 of the present invention are arranged sequentially in the direction of gravity.

[0069] Specifically, in the direction of gravity, the pulp collection unit 2 is located below the pulping unit 1.

[0070] When the pulping unit 1 and the pulp collection unit 2 are set in the above positions, the pulp that flows out of the pulping unit 1 can flow into the pulp collection unit 2 better under the action of gravity, so as to realize the pulp recovery more efficiently and effectively prevent the pulp from settling at the junction of the pulping unit 1 and the pulp collection unit 2, which could block and damage the device.

[0071] In one specific embodiment, the preparation apparatus of the present invention further includes a coal-water slurry storage unit 9; the storage inlet of the coal-water slurry storage unit 9 is connected to the coal-water slurry output outlet of the slurry preparation unit 1.

[0072] The prepared coal-water slurry is mostly not used directly, but needs to be stored and transported. The coal-water slurry storage unit 9 is used to store the coal-water slurry and ensure its quality.

[0073] Specifically, the storage inlet of the coal-water slurry storage unit 9 is connected to the coal-water slurry outlet of the pulping unit 1. The coal-water slurry prepared by the pulping unit 1 enters the coal-water slurry storage unit 9 for storage through the coal-water slurry outlet and the storage inlet of the coal-water slurry storage unit 9.

[0074] Understandably, the coal-water slurry storage unit 9 can also be equipped with a slurry outlet tank agitator to improve the uniformity of the coal-water slurry and effectively prevent the sedimentation of solid particles in the coal-water slurry. The coal-water slurry storage unit 9 can also be equipped with a slurry outlet tank and a slurry conveying pump to facilitate the external delivery of the coal-water slurry to the transportation device or downstream process.

[0075] As an intermediate device for the preparation and transportation of coal-water slurry, the coal-water slurry storage unit 9 not only provides a buffer for the transportation of coal-water slurry, but also ensures the stability of the coal-water slurry and guarantees its quality.

[0076] In one specific embodiment, the slurry collection unit 2 of the present invention includes a slurry collection tank and a stirring element disposed inside the slurry collection tank;

[0077] The first raw water inlet and the slurry inlet are located at the top of the slurry collection tank, and a drain outlet is also provided at the bottom of the slurry collection tank.

[0078] The run-through collection tank is used to collect run-through slurry and receive raw water entering through the first raw water inlet. The agitator is used to stir the mixture formed by the run-through slurry and the raw water to prevent solid particles in the run-through slurry from settling.

[0079] Specifically, the raw water enters the slurry collection tank through the first raw water inlet, and the slurry enters the slurry collection tank through the slurry inlet. In the slurry collection tank, the agitator stirs the mixture of slurry and raw water to improve the uniformity of the mixture. Then the mixture leaves the slurry collection tank through the first circulating water outlet and enters the pulping unit 1 through the drive unit 8 or directly enters the pulping unit 1.

[0080] As mentioned above, solid particles in the mixture of run-in slurry and raw water tend to settle. To further prevent the settling of solid particles, the first raw water inlet and the run-in slurry inlet are located at the top of the run-in slurry collection tank, so that the raw water entering through the first raw water inlet can fully flush the run-in slurry and prevent the settling of solid particles.

[0081] Non-grindable materials in the slurry will accumulate in the slurry collection tank. By setting up a drain outlet, the non-grindable materials can be discharged through the drain outlet at the bottom of the slurry collection tank.

[0082] The agitator can improve the fluidity of the liquid in the slurry and more effectively prevent the slurry from settling in the slurry collection tank. The drain outlet can clean up large particles or non-grindable materials in the slurry collection tank in a timely manner, free up space in the slurry collection tank, and reduce the difficulty of recycling the slurry.

[0083] This invention does not limit the specific structure and type of each unit of the preparation apparatus; all units can be commonly used devices or equipment in the field. For example, the pulping unit 1 can be a ball mill or a rod mill; the raw coal weighing unit 3 can be a weighing feeder; the spraying unit 4 can be a spray nozzle; the additive flow rate regulating unit 7 and the spray flow rate regulating unit 5 can be flow regulating valves; the additive storage unit 6 can be a storage tank; the drive unit 8 can be a drive pump; the coal-water slurry storage unit 9 can be a storage tank; and the slurry leakage monitoring unit can be a level gauge.

[0084] Example 1:

[0085] Figure 2 The diagram shows a coal-water slurry preparation device for implementing the present invention. The device includes a slurry preparation unit 1, a slurry collection unit 2, a raw coal weighing unit 3, a spraying unit 4, a spray flow rate adjustment unit 5, an additive storage unit 6, an additive flow rate adjustment unit 7, a drive unit 8, and a coal-water slurry storage unit 9.

[0086] Among them, the additive outlet of the additive storage unit 6 is connected to the raw material inlet of the pulping unit 1 via the additive flow regulating unit 7; the first coal outlet of the raw coal weighing unit 3 is connected to the raw coal inlet of the pulping unit 1; the slurry outlet of the pulping unit 1 is connected to the slurry inlet of the slurry collection unit 2; the slurry circulation outlet is connected to the second raw water inlet via the drive unit 8; the coal-water slurry outlet of the pulping unit 1 is connected to the storage inlet of the coal-water slurry storage unit 9; the spray outlet of the spraying unit 4 is connected to the spray inlet via the spray flow regulating unit 5; and the spray inlet is set opposite to the pulping component in the pulping unit 1.

[0087] The slurry collection unit 2 is equipped with a stirring component, and the coal-water slurry storage unit 9 is equipped with a slurry outlet tank agitator, a slurry outlet tank 13, and a slurry conveying pump.

[0088] The preparation device also includes a control unit (not shown in the figure) and a slurry flow monitoring unit (not shown in the figure), wherein the slurry flow monitoring unit is located at the bottom of the slurry flow collection unit 2 and is electrically connected to the control unit; the control unit is electrically connected to the spray flow rate adjustment unit 5 and the additive flow rate adjustment unit 7 respectively.

[0089] The specific preparation process of coal-water slurry is as follows:

[0090] The additives are stored in the additive storage unit 6 and then flow through the additive flow regulating unit 7 at a set flow rate, entering the pulping unit through the additive outlet and the raw material inlet; the raw coal is weighed by the raw coal weighing unit 3 and then flows through the first coal outlet and the raw coal inlet at a set weight to the pulping unit 1; the raw water enters the pulp collection unit 2 through the first raw water inlet, then flows through the pulp circulation outlet and the drive unit 8 to the second raw water inlet, and finally enters the pulping unit 1 through the second raw water inlet.

[0091] Spray water enters the pulping unit 1 through the spray water flow regulating unit 5, the spray water outlet, and the spray water inlet, and sprays the pulping components at the top of the pulping components.

[0092] In pulping unit 1, raw water, spray water, raw coal and additives are ground together by the pulping equipment to prepare coal-water slurry.

[0093] The overflowing coal-water slurry enters the slurry collection unit 2 through the slurry outlet and slurry inlet. On one hand, upon entering the slurry collection unit 2, the slurry monitoring unit is triggered to monitor the cumulative amount of slurry overflow per unit time, generating a slurry overflow signal. This signal is then transmitted to the control unit. Upon receiving the signal, the control unit generates a first instruction to adjust the additive flow rate of the additive flow rate adjustment unit 7, and a second instruction to adjust the spray water flow rate of the spray flow rate adjustment unit 5. On the other hand, the overflowing slurry entering the slurry collection unit 2 mixes with the raw material water to form a mixed liquid, which then enters the drive unit 8 through the slurry circulation outlet. Driven by the drive unit 8, it enters the pulping unit 1 through the second raw material water inlet, once again serving as a raw material for coal-water slurry preparation.

[0094] The coal-water slurry enters the coal-water slurry storage unit through the coal-water slurry outlet and storage inlet, and is transported externally by a slurry conveying pump when necessary.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coal-water slurry preparation apparatus, characterized in that, It includes a pulping unit, a pulp collection unit, a spraying unit, a spraying flow rate adjustment unit, an additive storage unit, an additive flow rate adjustment unit, a control unit, and a pulp monitoring unit; The pulp collection unit includes a first raw material water inlet, a pulp inlet, and a pulp circulation outlet; the pulping unit includes a second raw material water inlet and a pulp outlet; and the pulp collection unit includes a pulp collection tank and a stirring element disposed inside the pulp collection tank. The first raw water inlet is used to receive external raw water, the slurry outlet is connected to the slurry inlet, and the slurry circulation outlet is connected to the second raw water inlet; The slurry monitoring unit is electrically connected to the control unit, and the control unit is electrically connected to at least one of the spray flow regulating unit and the additive flow regulating unit. The slurry leakage monitoring unit is used to monitor the cumulative amount of slurry leakage in the slurry leakage collection unit in real time and generate a slurry leakage signal. The control unit is used to dynamically adjust at least one of the spray flow rate adjustment unit and the additive flow rate adjustment unit according to the slurry leakage signal. The raw water entering through the first raw water inlet is mixed with the runoff slurry in the runoff slurry collection tank and stirred by the agitator to prevent the runoff slurry from settling. The spray inlet of the spray unit is positioned opposite to the pulping component in the pulping unit, and is used to spray spray medium onto the pulping component to rinse it. The pulping unit and the pulp collection unit are arranged sequentially in the direction of gravity. The first raw water inlet and the slurry inlet are located at the top of the slurry collection tank, and a drain outlet is also provided at the bottom of the slurry collection tank.

2. The preparation apparatus according to claim 1, characterized in that, The spray outlet of the spray unit is connected to the spray inlet of the pulping unit through the spray flow regulating unit.

3. The preparation apparatus according to claim 1, characterized in that, The additive outlet of the additive storage unit is connected to the raw material inlet of the pulping unit through the additive flow regulating unit.

4. The preparation apparatus according to claim 3, characterized in that, The slurry leakage monitoring unit is located at the bottom of the slurry leakage collection unit.

5. The preparation apparatus according to any one of claims 1-4, characterized in that, It also includes a drive unit; the pulp circulation outlet is connected to the second raw material water inlet through the drive unit.

6. The preparation apparatus according to claim 5, characterized in that, It also includes a coal-water slurry storage unit; The storage inlet of the coal-water slurry storage unit is connected to the coal-water slurry output outlet of the slurry preparation unit.

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