Coal transportation dust suppressant liquid preparation and spraying system
By using multiple independent mixing tanks and stirring elements to process dust suppressant additives during coal transportation, the problem of dust flying during coal transportation is solved, the dust suppression effect is improved and resources are used efficiently.
Patent Information
- Application Number
- CN202511052270.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2025-09-26
AI Technical Summary
In the existing technology, dust flying during coal transportation causes environmental pollution, waste of resources and equipment loss, and the mixing equipment of chemical dust suppressants is difficult to adapt to multiple formulas, resulting in uneven mixing and blockage of the spraying system.
Multiple independent mixing tanks are used to process dust suppressant additives separately, and the liquid is introduced into the main pipe through the outlet pipes. Combined with stirring and heating elements, it ensures the uniformity of mixing and the film-forming property of the dust suppressant. It is equipped with residual liquid recovery components to reduce waste.
It improves the dust suppression effect, reduces coal loss, enhances the utilization rate of dust suppressants and system stability, and reduces the failure rate of the spraying system.
Smart Images
Figure CN120695997A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of dust suppression during coal transportation, and in particular relates to a dust suppressant liquid preparation and spraying system for coal transportation. Background Art
[0002] During open-air transportation of coal (especially open-top transportation by railways and highways), airflow disturbance causes coal dust to fly, resulting in three major problems: environmental pollution: dust spreads into the atmosphere, polluting the ecology along the line; resource waste: the average annual coal loss reaches 3% to 5% of the total transportation volume; equipment loss: dust compacts the railway track bed, blocks locomotive filters and insulation nets, and poses a safety hazard.
[0003] In related technologies, water sprinkling only provides short-term dust suppression by increasing the surface humidity of the coal pile. It cannot bind to suspended particles in the air, and the dust suppression effect disappears after the water evaporates. The application of chemical dust suppressants also faces the following challenges: existing mixing equipment is difficult to adapt to multi-component formulations (such as composite systems of wetting agents, binders, and hygroscopic agents), resulting in uneven solid-liquid mixing, causing agglomeration and clogging of spray pipes. Furthermore, the mixing ratio and stirring parameters (speed and duration) are not linked, affecting the film-forming and adhesion properties of the dust suppressant. Summary of the Invention
[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.
[0005] To this end, an embodiment of the present invention provides a coal transportation dust suppressant liquid preparation and spraying system, which improves dust suppression efficiency and reduces environmental damage and resource waste.
[0006] A coal transportation dust suppressant liquid spraying system according to an embodiment of the present invention includes:
[0007] A liquid preparation component, the liquid preparation component comprising a plurality of mixing tanks, one of the mixing tanks being used for adding at least one additive for preparing the dust suppressant;
[0008] A liquid storage assembly, wherein a plurality of mixing tanks are connected to the liquid storage assembly for storing the mixed dust suppressant discharged from the liquid dispensing assembly;
[0009] A spraying assembly is connected to the liquid storage assembly, and the spraying assembly includes a spraying member. The spraying member is arranged toward the coal transportation equipment to spray dust suppressant to the coal transportation equipment.
[0010] The coal transportation dust suppressant liquid preparation and spraying system of the embodiment of the present invention adopts multiple independent mixing tanks to separately process the additives for preparing the dust suppressant, and merges them into the main pipe through the liquid outlet pipes, so as to avoid premature reaction between the components during the dust suppressant liquid preparation process, reduce the risk of agglomeration, improve the dust suppression effect during coal transportation, reduce the loss of coal during transportation, and improve the utilization rate of coal.
[0011] In some embodiments, the liquid dispensing assembly further includes a plurality of stirring members, and the plurality of stirring members correspond one-to-one to the plurality of mixing tanks, so as to be used for stirring the mixed liquid in the mixing tanks.
[0012] In some embodiments, the multiple mixing tanks are divided into a first mixing tank, a second mixing tank and a third mixing tank, the first mixing tank is used to add adhesives and toughening agents, the second mixing tank is used to add auxiliary agents, and the third mixing tank is used to add binders. The liquid preparation component also includes a stirring tank, the inlet of the stirring tank is connected to the multiple mixing tanks, and the outlet of the stirring tank is connected to the liquid storage component.
[0013] In some embodiments, the mixing tank further has a dilution inlet, which is used to add tap water to dilute the mixed liquid in the mixing tank.
[0014] In some embodiments, the liquid preparation component also includes a heating element, which is connected to the first mixing tank. The heating element is used to heat the mixture of the adhesive and water in the first mixing tank, and the ratio of the adhesive to water in the mixture is between 1:18 and 1:22, and the heating temperature is 68°C to 72°C.
[0015] In some embodiments, the liquid storage assembly includes a liquid storage tank and a submersible sewage pump, the inlet of the submersible sewage pump is connected to the stirring tank, and the outlet of the submersible sewage pump is connected to the liquid storage tank.
[0016] In some embodiments, the liquid storage assembly further includes a clean water tank, the outlet of which is connected to the outlet of the liquid storage tank, so as to mix clean water into the dust suppressant discharged from the liquid storage tank.
[0017] In some embodiments, the spray assembly further includes a spray pump, an inlet of the spray pump is connected to the outlet of the liquid storage tank, and an outlet of the spray pump is connected to the spray member.
[0018] In some embodiments, the coal transportation dust suppressant liquid preparation and spraying system of an embodiment of the present invention also includes a residual liquid recovery component, and the residual liquid recovery component includes a sedimentation tank and a water pump. The sedimentation tank is used to collect the dust suppressant waste liquid sprayed by the spraying component, and the water pump is used to pass the clear liquid in the sedimentation tank into the mixing tank. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of a coal transportation dust suppressant liquid spraying system according to an embodiment of the present invention.
[0020] Reference numerals:
[0021] 100, adhesive, 200, toughening agent, 300, auxiliary agent, 400, binder,
[0022] 1. Liquid preparation assembly, 11. First mixing tank, 12. Second mixing tank, 13. Third mixing tank, 14. Stirring tank, 141. Dilution inlet,
[0023] 2. Liquid storage assembly, 21. Liquid storage tank, 22. Submersible sewage pump, 23. Clean water tank,
[0024] 3. Spraying assembly, 31. Spraying parts, 32. Spraying pump,
[0025] 4. Residual liquid recovery component, 41. Sedimentation tank, 42. Water pump. DETAILED DESCRIPTION
[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.
[0027] like Figure 1 As shown, the coal transportation dust suppressant liquid preparation and spraying system of the embodiment of the present invention includes: a liquid preparation component 1, a liquid storage component 2 and a spraying component 3.
[0028] The liquid assembly includes multiple mixing tanks, one of which is used to add at least one additive for preparing the dust suppressant. These mixing tanks are connected to a liquid storage assembly 2 to store the mixed dust suppressant discharged from the liquid preparation assembly 1. A spray assembly 3 is connected to the liquid storage assembly 2 and includes a spraying element 31. This spraying element 31 is positioned toward the coal transport equipment to spray the dust suppressant onto the equipment.
[0029] Specifically, if Figure 1 As shown, multiple mixing tanks adopt an independent addition and mixing working mode, which can avoid premature mixing reactions between the additives, reduce the probability of dust suppressant agglomeration during transportation, and ensure the transportation of dust suppressant. Multiple mixing tanks can be connected to the liquid storage component 2 through pipelines, so that the liquid prepared in each mixing tank can be transported to the liquid storage component 2 through the pipeline. The spraying component 3 includes a spraying part 31, and there can be multiple spraying parts 31. The multiple spraying parts 31 can be arranged according to the layout of the coal transportation equipment to ensure that the dust suppressant can evenly cover the coal surface. It helps to improve the film-forming property and adhesion of the dust suppressant, thereby enhancing the dust suppression effect.
[0030] It can be understood that the additives for preparing dust suppressants include adhesives 100, toughening agents 200, auxiliary agents 300 and binders 400, etc. Multiple additives can be added to a mixing tank in sequence, or two or more additives can be added to a mixing tank in combination to ensure that the additives can be fully mixed.
[0031] Therefore, the coal transportation dust suppressant liquid preparation and spraying system of the embodiment of the present invention adopts multiple independent mixing tanks to separately process the additives for preparing the dust suppressant, and merges them into the main pipe through the liquid outlet pipes, so as to avoid premature reaction between the components during the dust suppressant liquid preparation process, reduce the risk of agglomeration, improve the dust suppression effect during coal transportation, reduce the loss of coal during transportation, and improve the utilization rate of coal.
[0032] In some embodiments, the liquid preparation component 1 further includes a plurality of stirring members, and the plurality of stirring members correspond one-to-one to the plurality of mixing tanks, so as to stir the mixed liquid in the mixing tanks.
[0033] It is understood that each mixing tank is equipped with a stirring member, forming a one-to-one correspondence. The stirring member can be a stirrer, a stirring paddle or other stirring equipment suitable for mixing liquids, which can be directly installed inside the mixing tank or extend into the tank through the tank wall.
[0034] In other words, when the agitator operates within the mixing tank, it effectively mixes various additives, including wetting agents, binders, and hygroscopic agents, thereby avoiding problems such as uneven mixing and lumps. The agitator's speed and duration can be adjusted based on the dust suppressant's formulation to achieve optimal solid-liquid mixing and film-forming and adhesion properties.
[0035] In some embodiments, multiple mixing tanks are divided into a first mixing tank 11, a second mixing tank 12 and a third mixing tank 13. The first mixing tank 11 is used to add adhesive 100 and toughening agent 200, the second mixing tank 12 is used to add auxiliary agent 300, and the third mixing tank 13 is used to add binder 400. The liquid preparation component 1 also includes a stirring tank 14. The inlet of the stirring tank 14 is connected to multiple mixing tanks, and the outlet of the stirring tank 14 is connected to the liquid storage component 2.
[0036] It can be understood that in the first mixing tank 11, the addition of the adhesive 100 includes dissolution and gelatinization, that is, the adhesive 100 and water are mixed in proportion, heated to the gelatinization temperature, and continuously stirred for 10 to 20 minutes to allow the adhesive 100 to be fully gelatinized to form a colloidal solution; alkaline activation is performed, NaOH is slowly added, and stirred evenly to provide an alkaline environment, promote molecular cross-linking, and enhance adhesion.
[0037] In the first mixing tank 11, the addition of the toughening agent 200 includes: if inorganic salt toughening is used, inorganic salts (preferably calcium chloride and sodium silicate) are added to the gelatinized adhesive 100 solution, and the two react to generate CaSiO3 and CaCO3 micro-precipitates, thereby enhancing the bonding strength between the dust particles and controlling the pH value of the solution (close to neutral) to promote the reaction; if organic toughening is used, the toughening agent 200 (preferably polyvinyl alcohol or propylene glycol) is added, first dissolved in water at room temperature (accounting for 3% to 6% of the total mass), and then mixed with the adhesive 100 solution and stirred for 15 to 30 minutes to ensure uniform dispersion.
[0038] In the second mixing tank 12, the auxiliary agent 300 liquid is added including: a surfactant (preferably sodium dodecylbenzenesulfonate) and a water-retaining agent (preferably sodium carboxymethyl cellulose). The surfactant is added to reduce the surface tension; the water-retaining agent is added to increase the water retention rate. The solution is stirred for 5 to 10 minutes until it is completely dissolved to ensure the wettability and stability of the solution.
[0039] In the third mixing tank 13, the addition of the crusting agent includes: slowly adding the crusting agent (preferably vinyl acetate-ethylene copolymer emulsion) into the mixed solution while stirring for 10 to 15 minutes, so as to utilize the hydrophobic groups of the crusting agent to improve the curing rate and waterproofness.
[0040] In summary, by adding different types of additives in steps and ensuring that they are fully mixed in the mixing tank 14, the overall performance of the dust suppressant can be enhanced, thereby improving the dust suppression effect. The type and proportion of additives can be flexibly adjusted according to different transportation conditions and coal types to meet specific dust suppression needs. In addition, because the mixing process is more uniform and precise, dust suppressant waste can be reduced and resource utilization can be improved. The design of mixing and stirring in steps also improves the stability of the system and reduces spray system failures and maintenance costs caused by uneven mixing.
[0041] In some embodiments, the mixing tank 14 further has a dilution inlet 141 , which is used to add tap water to dilute the mixed liquid in the mixing tank 14 .
[0042] It will be appreciated that the dilution inlet 141 is located on the mixing tank 14 and tap water or other diluents can be added directly into the mixing tank 14. This inlet can be connected to a water supply system so that diluents can be added automatically or manually when needed.
[0043] That is, by adding diluents, the concentration of the mixture can be adjusted to meet specific dust suppression needs. Different environmental conditions and coal characteristics may require different concentrations of dust suppressant. Proper dilution can improve the spray performance of the dust suppressant, for example, reducing nozzle clogging and improving spray uniformity.
[0044] In some embodiments, the liquid preparation component 1 also includes a heating element, which is connected to the first mixing tank 11. The heating element is used to heat the mixture of adhesive 100 and water in the first mixing tank 11, and the ratio of adhesive 100 to water in the mixture is between 1:18 and 1:22, and the heating temperature is 68°C to 72°C.
[0045] It is understood that the heating element is used to heat the mixture of adhesive 100 and water to promote better dissolution of adhesive 100 in the water and enhance the activity of the mixture. The ratio of adhesive 100 to water in the mixture is controlled between 1:18 and 1:22. This ratio range is based on experimentation and experience to ensure that the mixture can achieve optimal dust suppression. The heating temperature is controlled between 68°C and 72°C. This temperature range optimizes the solubility of adhesive 100 and the fluidity of the mixture while preventing overheating that may cause performance degradation of adhesive 100.
[0046] In other words, heating helps the adhesive 100 dissolve better in water, thereby improving the overall performance of the mixture. This heating treatment strengthens the adhesive 100's adhesion to the coal surface, enhancing dust suppression. The heated mixture also improves fluidity, facilitating smooth operation of the spraying system and reducing the risk of nozzle clogging.
[0047] In some embodiments, the liquid storage assembly 2 includes a liquid storage tank 21 and a submersible sewage pump 22 . The inlet of the submersible sewage pump 22 is connected to the stirring tank 14 , and the outlet of the submersible sewage pump 22 is connected to the liquid storage tank 21 .
[0048] It can be understood that, according to the setting position of the spray assembly 3, the liquid storage tank 21 is usually arranged adjacent to the spray assembly 3 to facilitate the extraction of the dust suppressant in the liquid storage tank 21. Thus, the submersible sewage pump 22 can lift the liquid in the mixing tank 14 to a certain height and transport it to the liquid storage tank 21.
[0049] In some embodiments, the liquid storage assembly 2 further includes a clean water tank 23 , the outlet of which is connected to the outlet of the liquid storage tank 21 , so as to mix clean water into the dust suppressant discharged from the liquid storage tank 21 .
[0050] It is understandable that if Figure 1 As shown, the outlet of the clean water tank 23 is connected to the outlet of the liquid storage tank 21. This allows for easy addition of clean water to the dust suppressant mixture as it is discharged from the liquid storage tank 21. By adding clean water to the dust suppressant mixture, its concentration can be adjusted to better suit specific spraying requirements or environmental conditions. If the concentration of the dust suppressant mixture is too high, it can be diluted by adding clean water to achieve an appropriate spraying concentration.
[0051] In some embodiments, the spray assembly 3 further includes a spray pump 32 , the inlet of the spray pump 32 is connected to the outlet of the liquid storage tank 21 , and the outlet of the spray pump 32 is connected to the spray member 31 .
[0052] As will be appreciated, the spray pump 32 is connected to the liquid storage tank 21 and the spray unit 31 via a pipeline. The spray pump 32 is responsible for pumping the dust suppressant mixture from the liquid storage tank 21 and delivering it to the spray unit 31 via the pipeline for spraying. The spray pump 32 can adjust the spray pressure to ensure that the dust suppressant is sprayed onto the coal surface at the appropriate pressure and flow rate, achieving uniform coverage.
[0053] In some embodiments, the coal transportation dust suppressant liquid preparation and spraying system of the embodiment of the present invention also includes a residual liquid recovery component 4, the residual liquid recovery component 4 includes a sedimentation tank 41 and a water pump 42, the sedimentation tank 41 is used to collect the dust suppressant waste liquid sprayed by the spraying component 31, and the water pump 42 is used to pass the clear liquid in the sedimentation tank 41 into the mixing tank 14.
[0054] It will be appreciated that sedimentation tank 41 is used to collect the dust suppressant waste liquid sprayed by spray element 31. Sedimentation tank 41 is typically designed to have a large capacity to store a certain amount of waste liquid. A water pump 42 is located within sedimentation tank 41 and is used to extract the clear liquid from the sedimentation tank 41. Water pump 42 is typically designed to operate in water to prevent contamination by the waste liquid.
[0055] In other words, the clear liquid portion of the dust suppressant waste liquid sprayed by the spraying element 31 can be recovered through the sedimentation tank 41 and the pump 42. The recovered clear liquid can be passed into the mixing tank 14 and remixed with the additive to form a new dust suppressant mixture. This reduces resource waste and improves the efficiency of dust suppressant use.
[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0058] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.
[0059] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.
[0060] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.
[0061] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A coal transportation dust suppressant liquid spraying system, characterized in that: include: A liquid preparation component, the liquid preparation component comprising a plurality of mixing tanks, one of the mixing tanks being used for adding at least one additive for preparing the dust suppressant; A liquid storage assembly, wherein a plurality of mixing tanks are connected to the liquid storage assembly for storing the mixed dust suppressant discharged from the liquid dispensing assembly; A spraying assembly is connected to the liquid storage assembly, and the spraying assembly includes a spraying member. The spraying member is arranged toward the coal transportation equipment to spray dust suppressant to the coal transportation equipment.
2. The coal transportation dust suppressant liquid spraying system according to claim 1 is characterized in that: The liquid dispensing assembly further includes a plurality of stirring members, which correspond one-to-one to the plurality of mixing tanks and are used to stir the mixed liquid in the mixing tanks.
3. The coal transportation dust suppressant liquid spraying system according to claim 2, characterized in that: The multiple mixing tanks are divided into a first mixing tank, a second mixing tank and a third mixing tank. The first mixing tank is used to add adhesives and toughening agents, the second mixing tank is used to add auxiliary agents, and the third mixing tank is used to add binders. The liquid preparation component also includes a stirring tank. The inlet of the stirring tank is connected to the multiple mixing tanks, and the outlet of the stirring tank is connected to the liquid storage component.
4. The coal transportation dust suppressant liquid spraying system according to claim 3 is characterized in that: The stirring tank further comprises a dilution inlet, which is used for adding tap water to dilute the mixed liquid in the stirring tank.
5. The coal transportation dust suppressant liquid spraying system according to claim 4, characterized in that: The liquid preparation component also includes a heating element, which is connected to the first mixing tank. The heating element is used to heat the mixture of the adhesive and water in the first mixing tank. The ratio of the adhesive to water in the mixture is between 1:18 and 1:22, and the heating temperature is 68°C to 72°C.
6. The coal transportation dust suppressant liquid spraying system according to any one of claims 3 to 5, characterized in that: The liquid storage assembly includes a liquid storage tank and a submersible sewage pump. The inlet of the submersible sewage pump is connected to the stirring tank, and the outlet of the submersible sewage pump is connected to the liquid storage tank.
7. The coal transportation dust suppressant liquid spraying system according to claim 6, characterized in that: The liquid storage assembly further comprises a clean water tank, the outlet of which is connected to the outlet of the liquid storage tank so as to mix clean water into the dust suppressant discharged from the liquid storage tank.
8. The coal transportation dust suppressant liquid spraying system according to claim 7, characterized in that: The spray assembly further comprises a spray pump, the inlet of the spray pump is connected to the outlet of the liquid storage tank, and the outlet of the spray pump is connected to the spray member.
9. The coal transportation dust suppressant liquid spraying system according to claim 8, characterized in that: It also includes a residual liquid recovery component, which includes a sedimentation tank and a water pump. The sedimentation tank is used to collect the dust suppressant waste liquid sprayed by the spraying component, and the water pump is used to pass the clear liquid in the sedimentation tank into the stirring tank.