Efficient foam dedusting agent and preparation method and application thereof

Abstract

The invention provides a high-efficiency foam dedusting agent as well as a preparation method and application thereof. The preparation method of the agent comprises the following steps: (1) mixing and dissolving a surfactant and deionized water according to a certain proportion to obtain a mixed solution A; (2) adding glycerol and propylene glycol into the mixed solution A according to a certain proportion to obtain a mixed solution B, then transferring the mixed solution B into a reaction container, and stirring until all components in the solution are completely and uniformly mixed to obtain a main component C of the foam dedusting agent; and (3) adding sodium dodecyl benzene sulfonate, diethylene glycol monobutyl ether and polyoxyethyl alkyl ether into the main component C according to a certain proportion, and completely dissolving to obtain the efficient foam dedusting agent. The problems of high cost, unstable performance, insufficient foaming amount, short maintenance time, poor anti-freezing performance and the like of a traditional dust removal agent in coal yard dust control are effectively solved by utilizing the synergistic effect of a plurality of auxiliary agents for foaming of the surfactant.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal, and in particular to a high-efficiency foam dust removal agent and a preparation method and application thereof. Background Art

[0002] Dust emissions from coal yards, including mining, transportation, and storage, have become a serious problem that demands urgent attention. The negative impacts of this dust are multifaceted: environmentally, its spread degrades surrounding air quality, severely disrupting ecological balance and affecting the habitats of plants and animals. Health-wise, workers exposed to dust for extended periods are susceptible to respiratory illnesses such as pneumoconiosis, which not only harms their health but also significantly reduces their quality of life. From a safety perspective, coal yard dust concentrations can cause explosions when exposed to fire, resulting in significant economic losses and casualties for businesses. Most mine dust is hydrophobic and difficult to wet and settle, a drawback of water mist dust capture. Foam dust removal technology, by incorporating a foaming agent, overcomes this drawback, enabling rapid wetting and capture of dust.

[0003] Currently, a wide variety of dust removal agents are available on the market, but some products present numerous challenges in practical application. While some traditional dust removal agents have some effectiveness, their high cost limits their widespread application. Some agents exhibit poor stability, experiencing significant performance fluctuations when environmental conditions such as temperature and humidity change, making it difficult to ensure sustained, stable dust removal. Some agents also lack sufficient foaming capacity, failing to effectively cover dusty areas, resulting in low dust removal efficiency and failing to meet the urgent need for efficient dust removal in locations like coal yards. Furthermore, some agents cannot withstand long-term storage at low temperatures.

[0004] Among the many ingredients in dust removal agents, sodium laureth sulfate exhibits unique advantages. Compared to the common ingredients in traditional foam dust removers, it possesses stronger emulsifying power, enabling a more even dispersion of the agent's components within the solution and enhancing its stability. Its remarkable solubilizing effect effectively increases the solubility of other functional ingredients in water, ensuring the full effectiveness of each ingredient. Sodium laureth sulfate excels in both cleaning and foaming, producing a rich, fine, and stable foam that significantly enhances dust capture efficiency. However, due to the limitations of traditional dust removal formulations, these advantages of sodium laureth sulfate have not been fully realized.

[0005] Based on the urgent need for coal yard dust control and the problems of high cost, unstable performance, insufficient foaming, etc. of traditional dust removal agents, and considering that the huge potential of sodium lauryl polyoxyethylene ether sulfate in dust removal has not been fully explored and utilized, this patent application is filed. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects of the existing technology and provide a high-efficiency foam dust removal agent and its preparation method and application, aiming to solve the problems of high cost, unstable performance, insufficient foaming amount, etc. of the existing dust removal agents, and to achieve green, economical and efficient dust control in places such as coal yards. While ensuring better dust removal effect, it greatly reduces production costs, improves the foaming amount and stability of the agent, and creates better environmental and economic benefits.

[0007] The present invention provides the following technical solutions:

[0008] The present invention provides a method for preparing a high-efficiency foam dust removal agent, comprising the following steps:

[0009] (1) mixing and dissolving a surfactant and deionized water in a certain proportion to obtain a mixed solution A;

[0010] (2) adding glycerol and propylene glycol in a certain proportion to the mixed solution A to obtain a mixed solution B, which is then transferred to a reaction vessel and stirred until the components in the solution are completely mixed to obtain the main component C of the foam dust remover;

[0011] (3) A certain proportion of sodium dodecylbenzene sulfonate, diethylene glycol butyl ether, and polyoxyethylene alkyl ether are added to the main component C and allowed to dissolve completely to obtain the high-efficiency foam dust removal agent.

[0012] The mechanism of action of the foam dust removal agent of the present invention is based on the synergistic effect of each component. The surfactant ions generated by the ionization of sodium lauryl polyoxyethylene ether sulfate in water can significantly reduce the surface tension of the solution, making it easier for the solution to spread and wet on the dust surface, thereby enhancing the adsorption capacity of dust. Glycerin and propylene glycol maintain the elasticity and toughness of the foam through their moisturizing and plasticizing effects, preventing the foam from quickly breaking when it comes into contact with dust or is disturbed by the outside world, thereby extending the service life of the foam. Sodium dodecylbenzene sulfonate further reduces the surface tension, enhances the wetting and dispersing effect of the agent on dust, and makes the dust more easily wrapped by the foam. Diethylene glycol butyl ether adjusts the viscosity of the liquid, optimizes the structure of the foam, makes it more stable, and can better carry and settle dust. Polyoxyethylene alkyl ether promotes the formation and stability of foam by reducing surface tension, increases the foaming amount, and improves the dust capture efficiency. In the actual dust removal process, the foam, with its large surface area and viscosity, fully contacts the flying coal powder, and separates the coal powder from the air through physical effects such as wrapping and sedimentation, thereby achieving the purpose of efficient dust removal.

[0013] Furthermore, in step (1), the surfactant is sodium lauryl polyoxyethylene ether sulfate.

[0014] Furthermore, in step (1), the mass ratio of the surfactant to deionized water is 1:5.4.

[0015] Furthermore, in step (2), the mass ratio of the glycerol, propylene glycol and surfactant is 0.8:0.4:1.

[0016] Furthermore, in step (2), the reaction vessel is equipped with a magnetic stirrer, and the stirring speed is 600 to 1000 r / min.

[0017] Furthermore, in step (2), the stirring temperature is 20-30°C.

[0018] Furthermore, the mass ratio of the sodium dodecylbenzene sulfonate, diethylene glycol butyl ether, polyoxyethylene alkyl ether and main component C is (1-5): (1-5): (1-5): 95.

[0019] Furthermore, the mass ratio of the sodium dodecylbenzene sulfonate, diethylene glycol butyl ether, polyoxyethylene alkyl ether and main component C is 3:3:3:95.

[0020] The present invention also provides a high-efficiency foam dust removal agent prepared by the above preparation method.

[0021] The present invention also provides the use of the prepared high-efficiency foam dust removal agent in controlling dust pollution in coal yards and mines.

[0022] The present invention has the following beneficial effects:

[0023] 1. The present invention greatly optimizes the dust removal performance. By systematically studying the effects of each component and optimizing the formula, the dust removal effect is significantly improved. Polyoxyethylene alkyl ether can effectively increase the viscosity of the agent and improve the foaming effect. The rich and dense foam produced can better cover the dust and enhance the capture ability. An appropriate amount of diethylene glycol butyl ether helps to prolong the foam maintenance time, so that the foam can exist stably for a long time and continuously adsorb and settle dust. An appropriate amount of propylene glycol as a wetting agent improves the wetness and maintenance time of the foam, enhances the affinity between the foam and dust, and makes the dust easier to be wrapped and removed by the foam.

[0024] 2. The agent of the present invention exhibits good adaptability under different environmental conditions; the addition of propylene glycol enables it to be well stored in a low-temperature environment; in the dilution amplification experiment, the foam dust removal agent performs stably at different dilution ratios and can maintain excellent foaming performance even at a high dilution ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 Schematic diagram of the structure of the foam dust removal equipment used to evaluate the dynamic dust removal effect of samples in the present invention. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The present invention provides a method for preparing a high-efficiency foam dust removal agent, comprising the following steps:

[0029] (1) mixing and dissolving a surfactant and deionized water in a certain proportion to obtain a mixed solution A;

[0030] (2) adding glycerol and propylene glycol in a certain proportion to the mixed solution A to obtain a mixed solution B, which is then transferred to a reaction vessel and stirred until the components in the solution are completely mixed to obtain the main component C of the foam dust remover;

[0031] (3) A certain proportion of sodium dodecylbenzene sulfonate, diethylene glycol butyl ether, and polyoxyethylene alkyl ether are added to the main component C and allowed to dissolve completely to obtain the high-efficiency foam dust removal agent.

[0032] The present invention will be further described below through specific examples.

[0033] Example 1:

[0034] The preparation method of the high-efficiency foam dust removal agent in this embodiment specifically includes the following steps:

[0035] (1) Prepare mixed solution A: Weigh 67.5 g of deionized water and 12.5 g of sodium lauryl polyoxyethylene ether sulfate in a 250 mL beaker and stir continuously until completely dissolved to obtain mixed solution A.

[0036] (2) Weigh 10 g of glycerol and 5 g of propylene glycol, add them to mixed solution A in sequence, and stir thoroughly until uniform to obtain mixed solution B.

[0037] (4) 1 g of sodium dodecylbenzenesulfonate, 1 g of diethylene glycol butyl ether, and 1 g of polyoxyethylene alkyl ether were added to the mixed solution B in sequence, and the mixture was stirred for 30 min to fully disperse the components to obtain a foam dust removal agent sample 1.

[0038] Example 2:

[0039] The preparation method of the high-efficiency foam dust removal agent in this example is basically the same as that in Example 1, except that the amount of sodium dodecylbenzenesulfonate, diethylene glycol butyl ether, and polyoxyethylene alkyl ether is adjusted to 3 g. Under the same experimental conditions, 67.5 g of deionized water is weighed into a 250 mL beaker, the stirring speed is set to 700 r / min, and each component is added in sequence and stirred for the corresponding time to obtain foam dust removal agent sample 2.

[0040] Example 3:

[0041] The preparation method of the high-efficiency foam dust removal agent in this example is essentially the same as that in Example 1, except that the amount of sodium dodecylbenzenesulfonate, butyl diethylene glycol ether, and polyoxyethylene alkyl ether is adjusted to 5g. During the experiment, the amount of deionized water was controlled to 67.5g, the stirring speed was 700r / min, and each component was added in sequence and stirred for the corresponding time to obtain foam dust removal agent sample 3.

[0042] Example 4:

[0043] The preparation method of the high-efficiency foam dust removal agent in this embodiment specifically includes the following steps:

[0044] (1) Prepare mixed solution A: Weigh 67.5 g of deionized water and 12.5 g of sodium lauryl polyoxyethylene ether sulfate in a 250 mL beaker and stir continuously until completely dissolved to obtain mixed solution A.

[0045] (2) Weigh 10 g of glycerol and 5 g of propylene glycol, add them to mixed solution A in sequence, and stir thoroughly until uniform to obtain mixed solution B.

[0046] (3) 1 g of sodium dodecylbenzenesulfonate, 3 g of diethylene glycol butyl ether, and 5 g of polyoxyethylene alkyl ether were added to the mixed solution B in sequence, and the mixture was stirred for 30 min to fully disperse the components to obtain a foam dust removal agent sample 4.

[0047] Example 5:

[0048] The preparation method of the high-efficiency foam dust removal agent in this embodiment specifically includes the following steps:

[0049] (1) Prepare mixed solution A: Weigh 67.5 g of deionized water and 12.5 g of sodium lauryl polyoxyethylene ether sulfate in a 250 mL beaker and stir continuously until completely dissolved to obtain mixed solution A.

[0050] (2) Weigh 10 g of glycerol and 5 g of propylene glycol, add them to mixed solution A in sequence, and stir thoroughly until uniform to obtain mixed solution B.

[0051] (3) 1 g of sodium dodecylbenzenesulfonate, 5 g of diethylene glycol butyl ether, and 3 g of polyoxyethylene alkyl ether were added to the mixed solution B in sequence, and the mixture was stirred for 30 min to fully disperse the components to obtain a foam dust removal agent sample 5.

[0052] Example 6:

[0053] The preparation method of the high-efficiency foam dust removal agent in this embodiment specifically includes the following steps:

[0054] (1) Prepare mixed solution A: Weigh 67.5 g of deionized water and 12.5 g of sodium lauryl polyoxyethylene ether sulfate in a 250 mL beaker and stir continuously until completely dissolved to obtain mixed solution A.

[0055] (2) Weigh 10 g of glycerol and 5 g of propylene glycol, add them to mixed solution A in sequence, and stir thoroughly until uniform to obtain mixed solution B.

[0056] (3) 5 g of sodium dodecylbenzenesulfonate, 3 g of diethylene glycol butyl ether, and 1 g of polyoxyethylene alkyl ether were added to the mixed solution B in sequence, and the mixture was stirred for 30 min to fully disperse the components to obtain a foam dust removal agent sample 6.

[0057] Comparative Example 1:

[0058] The preparation method of the foam dust removal agent for adjusting sodium dodecylbenzenesulfonate in this example specifically includes the following steps:

[0059] (1) Prepare mixed solution A: Weigh 67.5 g of deionized water into a 250 mL beaker, turn on the mechanical stirring device, and set the stirring speed to 500 r / min. Weigh 12.5 g of sodium lauryl polyoxyethylene ether sulfate and slowly add it to the beaker, stirring continuously until it is completely dissolved, to obtain mixed solution A.

[0060] (2) Weigh 10 g of glycerol and 5 g of propylene glycol and add them to mixed solution A in sequence to obtain mixed solution B.

[0061] (3) Turn on the magnetic stirring and set the stirring speed to 700 r / min. Stir the mixed solution B until all components in the solution are completely dissolved and the solution is clear and transparent. Add 3 g of sodium dodecylbenzenesulfonate. After the system forms a uniform and stable solution, obtain pharmaceutical sample 7.

[0062] Comparative Example 2:

[0063] The preparation method of the foam dust removal agent by adjusting diethylene glycol butyl ether in this example specifically includes the following steps:

[0064] (1) Prepare mixed solution A: Weigh 67.5 g of deionized water into a 250 mL beaker, turn on the mechanical stirring device, and set the stirring speed to 500 r / min. Weigh 12.5 g of sodium lauryl polyoxyethylene ether sulfate and slowly add it to the beaker, stirring continuously until it is completely dissolved, to obtain mixed solution A.

[0065] (2) Weigh 10 g of glycerol and 5 g of propylene glycol and add them to mixed solution A in sequence to obtain mixed solution B.

[0066] (3) Turn on the magnetic stirring and set the stirring speed to 700 r / min. Stir the mixed solution B until all components in the solution are completely dissolved and the solution is clear and transparent. Add 3 g of diethylene glycol butyl ether. After the system forms a uniform and stable solution, obtain the foam dust removal agent sample 8 with the diethylene glycol butyl ether.

[0067] Comparative Example 3:

[0068] The preparation method of the foam dust removal agent of the polyoxyethylene alkyl ether in this example specifically comprises the following steps:

[0069] (1) Prepare mixed solution A: Weigh 67.5 g of deionized water into a 250 mL beaker, turn on the mechanical stirring device, and set the stirring speed to 500 r / min. Weigh 12.5 g of sodium lauryl polyoxyethylene ether sulfate and slowly add it to the beaker, stirring continuously until it is completely dissolved, to obtain mixed solution A.

[0070] (2) Weigh 10 g of glycerol and 5 g of propylene glycol and add them to mixed solution A in sequence to obtain mixed solution B.

[0071] (3) Turn on the magnetic stirring and set the stirring speed to 700 r / min. Stir the mixed solution B until all components in the solution are completely dissolved and the solution is clear and transparent. Add 3 g of polyoxyethylene alkyl ether. After the system forms a uniform and stable solution, obtain the foam dust removal agent sample 9 modulated with diethylene glycol butyl ether.

[0072] The performance of the foam dust removal agents prepared in Examples 1 to 6 and Comparative Examples 1 to 3 was tested:

[0073] Foaming Performance Test: At room temperature, allow 200ml of test solution to flow freely from a capillary pen tube (900mm high and 2.9mm inner diameter) onto 50ml of the same test solution in a graduated tube. This generates foam. Record the height of the foam column at different times to indicate the foaming ability and foam stability of the foaming agent, respectively. Repeat three times and take the average value.

[0074] Wetting performance: Add 200ml of foaming liquid to a 500ml graduated cylinder and transfer to three beakers. After the liquid level in the beakers has settled, use a balance to measure 0.2g of coal powder of varying particle sizes and add it to the beakers. Use a stopwatch to measure and record the time it takes for the dust to completely submerge in the foaming liquid. Repeat this process as needed for different test objectives.

[0075] The bulk viscosity of the solution was measured using a rotational viscometer (model NDJ-5S). A No. 0 spindle was used at a speed of 60 rpm. The viscosity of the solution was recorded when the value stabilized. Each solution was tested three times and the average value was calculated.

[0076] Table 1 Performance of various foam dust removal agents (static test)

[0077]

[0078] The dynamic dust removal effect of the sample is completed in the homemade foam dust removal equipment (equipment picture as shown Figure 1 The procedure is as follows: Weigh 10g of coal powder and place it in the lower inlet. Turn on the blower to lift the coal powder until the dust concentration in the system is uniform. Open the measuring port to measure the dust concentration in the system. Measure the dust concentration three times and take the average value. Close the measuring port, turn on the gas (flow rate = 100-1000mL / min) and water pump (flow rate = 100-200mL / min), squeeze the dust removal agent to create foam, and spray it from the top. Measure the dust concentration in the system 10s, 20s, and 30s after the agent is sprayed. Dust removal rate = (initial concentration - concentration at a certain time) / initial concentration × 100%.

[0079] Table 2 Performance of various foam dust removal agents (dynamic dust removal effect)

[0080]

[0081] The foam dust removal agent sample No. 2 with the best performance was selected, and the dilution performance and freezing performance tests were conducted on the sample No. 2. The specific results are shown in Tables 3 to 5:

[0082] Table 3 Dilution performance of foam dust removal agent sample 2 (static)

[0083]

[0084] Table 4 Dilution performance of foam dust removal agent sample 2 (dynamic)

[0085]

[0086] Table 5 Freezing test of foam dust removal agent sample 2 (freezing is marked as √ and non-freezing is marked as ×)

[0087]

[0088] From the above experiments we can see that:

[0089] (1) Static experiment: The prepared samples were foamed under the same conditions, and the foaming performance and stability time were then observed. The results showed that the introduction of sodium dodecylbenzene sulfonate, diethylene glycol butyl ether, and polyoxyethylene alkyl ether significantly increased the foaming ability and stability of the agent. The performance was maintained at a good level when the content was adjusted from 1g to 5g. The introduction of sodium dodecylbenzene sulfonate, diethylene glycol butyl ether, and polyoxyethylene alkyl ether also significantly improved the agent's wettability on coal powder and the system viscosity, which helped to improve the agent's dust capture ability.

[0090] (2) Dynamic Dust Removal Test: Dynamic dust collection tests were conducted on the prepared agents. All of Examples 1 to 3 (Samples 1-3) were able to maintain a dust collection rate of >90%. Although the main component alone could maintain a relatively high dust collection rate (>80%), the collection rate in a short period of time (10s-20s) was still poor. It was necessary to add sodium dodecylbenzenesulfonate, diethylene glycol butyl ether, and polyoxyethylene alkyl ether to further improve its performance.

[0091] (3) Dilution amplification experiment: The sample was diluted 10-200 times. During the dilution process, the quality and temperature of the dilution water were strictly controlled to ensure the consistency of the experimental conditions. After the dilution was completed, the dynamic and static indicators of the samples at each dilution ratio were measured. It was found that with the increase of the dilution ratio, the indicators of the agent decreased slightly, but they could all be maintained at a high level. While ensuring that the dust removal effect was equivalent to that of the reference sample, the production cost was reduced. It is suitable for dust control in places such as coal yards.

[0092] (4) Antifreeze test: The prepared foam dust remover was placed at -40°C for an antifreeze test, and the prepared dust remover showed no obvious freezing phenomenon.

[0093] Traditional foam dust removal agents have many shortcomings in actual applications, such as cost, performance and applicable scenarios, which limit their widespread use in the field of dust control. The foam dust removal agent involved in the present invention has significant advantages. It can be seen from the samples prepared in Examples 4 to 6 that the foam dust removal agent can flexibly and dynamically adjust the usage content of each agent component according to a variety of different application scenarios. In places with high dust concentrations, the proportion of ingredients with strong adsorption and high foaming capacity can be appropriately increased, such as increasing the content of sodium lauryl polyoxyethylene ether sulfate and polyoxyethylene alkyl ether, thereby producing richer and more stable foam, enhancing the ability to capture dust, and ensuring efficient dust removal. In scenarios that are more sensitive to cost and have relatively low dust concentrations, the amount of some auxiliary ingredients can be reduced, such as appropriately reducing the amount of sodium dodecylbenzene sulfonate and diethylene glycol butyl ether added, while ensuring basic dust removal effects, effectively saving costs.

[0094] This dynamic adjustment of component content makes this foam dust removal agent widely applicable in various scenarios, including coal storage and transportation, mining, and construction, among other dust-generating industries. It not only solves the problem of traditional dust removal agents struggling to meet the needs of diverse scenarios, but also maximizes cost savings while ensuring effective dust removal. This provides businesses with an economical, efficient, and flexible dust control solution, demonstrating its high practical value and potential for widespread adoption.

[0095] The foam dust removal agent prepared by the present invention is green and environmentally friendly. Through the synergistic effect of various components, it effectively solves the dust control in coal yards. Traditional dust removal agents have problems such as high cost, unstable performance, and insufficient foaming volume, which is beneficial to the control of air pollution problems in dust environments.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for preparing a high-efficiency foam dust removal agent, characterized in that: The following steps are involved: (1) mixing and dissolving a surfactant and deionized water in a certain proportion to obtain a mixed solution A; (2) adding glycerol and propylene glycol in a certain proportion to the mixed solution A to obtain a mixed solution B, which is then transferred to a reaction vessel and stirred until the components in the solution are completely mixed to obtain the main component C of the foam dust remover; (3) A certain proportion of sodium dodecylbenzene sulfonate, diethylene glycol butyl ether, and polyoxyethylene alkyl ether are added to the main component C and allowed to dissolve completely to obtain the high-efficiency foam dust removal agent.

2. The method for preparing the high-efficiency foam dust removal agent according to claim 1, wherein: In step (1), the surfactant is sodium lauryl polyoxyethylene ether sulfate.

3. The method for preparing the high-efficiency foam dust removal agent according to claim 2, wherein: In step (1), the mass ratio of the surfactant to deionized water is 1:5.

4.

4. The method for preparing the high-efficiency foam dust removal agent according to claim 1, wherein: In step (2), the mass ratio of the glycerol, propylene glycol and surfactant is 0.8:0.4:

1.

5. The method for preparing the high-efficiency foam dust removal agent according to claim 1, wherein: In step (2), the reaction vessel is equipped with a magnetic stirrer, and the stirring speed is 600-1000 r / min.

6. The method for preparing the high-efficiency foam dust removal agent according to claim 5, wherein: In step (2), the stirring temperature is 20-30°C.

7. The method for preparing the high-efficiency foam dust removal agent according to claim 1, wherein: In step (3), the mass ratio of the sodium dodecylbenzene sulfonate, diethylene glycol butyl ether, polyoxyethylene alkyl ether and main component C is (1-5): (1-5): (1-5):

95.

8. The method for preparing the high-efficiency foam dust removal agent according to claim 7, wherein: The mass ratio of the sodium dodecylbenzene sulfonate, diethylene glycol butyl ether, polyoxyethylene alkyl ether and main component C is 3:3:3:

95.

9. A high-efficiency foam dust removal agent prepared by the preparation method according to any one of claims 1 to 8.

10. Use of the high-efficiency foam dust removal agent according to claim 9 in controlling dust pollution in coal yards and mines.

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