CN111004608B - Wetting type dust suppressant for road dust emission and preparation method thereof - Google Patents
Wetting type dust suppressant for road dust emission and preparation method thereof Download PDFInfo
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Abstract
The invention aims to provide a wetting dust suppressant for road raise dust and a preparation method thereof in order to research, develop and use a composite road raise dust wetting material with convenient use, long effective action time and low cost, belonging to the field of road raise dust treatmentThe field of the technology. The wetting type dust suppressant comprises the following raw material components in percentage by mass: sodium lactate: 0.1-2%, Span-80: 0.1-6%, glycerin: 0.1% -3%, binder: 0.1-5%, urea: 0.5-5% of CaCl2: 1-20%, surfactant: 0.1-1%, water: and (4) the balance. The wetting dust suppressant combines the humectant, the hygroscopic agent, the surfactant and the binder for use, so that the pavement can continuously keep a certain water content, the dust suppression effect of the road is ensured, the material strength is high, and the action effect of the dust suppressant is improved.
Description
Technical Field
The invention belongs to the field of road dust control, and particularly relates to a wetting type dust suppressant for road dust and a preparation method thereof.
Background
The surface of the open pit mining field is a simple surface paved by broken stones or soil and the like, a large amount of fine dust is accumulated on the surface, the mutual acting force of the dust is weak, and the dust is easy to raise under the action of natural wind or induced wind current caused by automobile running. The high-concentration dust raised during the running of the automobile not only harms the physical health of workers and the running safety, but also causes huge loss to the economy of the mine due to the fact that the abrasion and the oil consumption of mining machinery are increased due to the existence of the high-concentration dust. Therefore, taking measures to control the road dust emission is a problem that each mine must face.
At present, the dust on the road surface is mainly inhibited by adopting a water spraying method at home and abroad, the water spraying is simple and convenient, but the evaporation speed is high, the action time is short, and the requirement of long-term effective dust inhibition on the road surface with large dust deposition thickness cannot be met. However, most of the existing road dust suppressant is applied to the field of coal transportation, for example, patent CN 102295915B discloses a dust suppressant for carriage coal surface, which can form a layer of cured film on the coal surface after spraying, although the patent states that the dust suppressant can be used for mines and urban roads, the wetting property of road dust is not demonstrated due to research and development of the dust suppressant for coal dust; patent CN 102660227B discloses a road dust suppressant, which is prepared by mixing 0.1-2.0% of water-soluble high-molecular polymer, 20-50% of moisture absorbent, 1.0-5.0% of preservative, 0.5-5.0% of penetrating agent and the balance of water, a large amount of moisture absorbent is added into the dust suppressant, and the high-concentration moisture absorbent can influence the pH value of the dust suppressant, so that the viscosity of the dust suppressant can be influenced in the dissolving process of other materials of the dust suppressant.
In conclusion, most of the existing dust depressants are simple to compound various active ingredients, and a formula for maintaining stable performance of the dust depressants is prepared from the interaction principle of the raw materials of the dust depressants, but the formula is very important for production and use of the dust depressants, and simultaneously, the maximum effect of the raw materials is also exerted, so that the cost is saved. Therefore, further research into dust suppressants is necessary.
Disclosure of Invention
The invention aims to provide a wetting dust suppressant for road dust and a preparation method thereof, in order to research, develop and use a composite road dust wetting material with convenient use, long effective action time and low cost. The wetting dust suppressant combines the humectant, the hygroscopic agent, the surfactant and the binder for use, so that the pavement can continuously keep a certain water content, the dust suppression effect of the road is ensured, the material strength is high, and the action effect of the dust suppressant is improved.
In order to achieve the aim, the invention provides a wetting type dust suppressant for road dust, which comprises the following raw material components in percentage by mass:
sodium lactate: 0.1 to 2%
Span-80：0.1～6％
Glycerol: 0.1 to 3 percent
Adhesive: 0.1 to 5 percent
Urea: 0.5 to 5 percent
CaCl2：1～20％
Surfactant (b): 0.1 to 1 percent
Water: and (4) the balance.
The wetting dust suppressant preferably comprises the following raw material components in percentage by mass:
sodium lactate: 0.1 to 0.9 percent
Span-80：0.1～2％
Glycerol: 0.1 to 1 percent
Adhesive: 0.1 to 2 percent
Urea: 0.5 to 2 percent
CaCl2：5～10％
Surfactant (b): 0.1 to 0.6 percent
Water: and (4) the balance.
The wetting dust suppressant is prepared by mixing a binder and a water, wherein the binder is one or more of carboxymethyl cellulose, xanthan gum, methyl cellulose and polyacrylamide;
In the wetting dust suppressant, the surfactant is one or more of sodium dodecyl benzene sulfonate, sodium fatty acid ethyl ester sulfonate and sodium oleamide;
the invention also provides a technical scheme, and the preparation method of the dust suppressant comprises the following steps:
(1) weighing the raw materials according to the mass percentage, dividing water into A, B, C parts, heating A to 50-60 ℃, and heating B, C to 40-50 ℃; wherein the mass ratio of A to B to C is 1: 0.8-1.1;
(2) adding Span-80, binder and CaCl2Uniformly mixing, mixing with part A of water, stirring at a rotation speed of 100-300 rpm/min for 30-40 min under heat preservation, and cooling to room temperature to obtain an aqueous solution a;
(3) mixing sodium lactate, glycerol and urea with the part B water, stirring at the rotation speed of 100-300 rpm/min for 30-40 min under heat preservation, adding a surfactant, and adding the part C water to obtain an aqueous solution B;
(4) stirring the aqueous solution b at the rotating speed of 100-150 rpm/min, adding the aqueous solution a, stirring for 8-12 min, and cooling to the normal temperature to obtain a finished product.
Compared with the prior art, the invention has the advantages that:
1. the sodium lactate is selected as the main moisture absorption component of the dust suppressant, the glycerin is used as the humectant, the sodium lactate has very strong water absorption capacity, the glycerin has moisture retention performance, the water loss is reduced, the glycerin is used in combination with the sodium lactate, the surface of dust is continuously kept with certain water content, the moisture retention performance of the dust suppressant is longer-acting, the dust suppression efficiency is improved, and after a binder in the dust suppressant is dissolved, the binder is mutually crosslinked to form a network structure, so that the system has structural viscosity, and the viscosity is increased; span-80 is a nonionic surfactant, does not ionize in solution, has the advantages of acid-base stability and little influence by temperature, but is insoluble in water. According to the invention, the ion surfactant mixed span-80 is used, after being mixed with the ion surfactant, span-80 molecules are inserted between ion molecules, and mixed with the ion surfactant to form mixed micelles, the cmc (critical gum concentration) is reduced to a lower level, so that the performance of the surfactant is more excellent and stable, and the mixed solution can be well dissolved in the solution, thereby ensuring the system stability of the mixed solution.
2. The dust suppressant has strong moisture absorption and retention functions and viscosity stability, and the effective components of the dust suppressant are adsorbed and complexed with dust, so that fine dust which is easy to fly is bonded and agglomerated into non-flying dust particles with larger particle size, and the purpose of suppressing dust is fundamentally realized.
3. The raw materials of the dust suppressant have no harmful substances, and are environment-friendly.
Detailed Description
In the following examples, glycerol was 95% pure, methylcellulose type M-450 pure, xanthan gum was 99% pure (1300 mp. s viscosity in 1% aqueous solution), and polyacrylamide had a molecular weight of 1000 ten thousand.
Example 1
A wetting type dust suppressant comprises the following components in percentage by mass: CaCl2: 15%, Span-80: 0.2%, glycerin: 0.5%, methylcellulose: 1%, sodium dodecylbenzenesulfonate: 0.4%, sodium lactate: 0.5%, urea: 0.5%, water: 81.9 percent.
The preparation method comprises the following steps:
(1) the water content is 315g of A, 252g of B and 252g of C, wherein A is heated to 50 ℃, and B, C are heated to 40 ℃;
(2) 2g of Span-80, 10g of methylcellulose and 150g of CaCl2Mixing uniformly, mixing with part A of water, stirring at a rotation speed of 100rpm/min for 40min, and cooling to room temperature to obtain an aqueous solution a;
(3) Mixing 5g of sodium lactate, 5g of glycerol and 5g of urea with part B of water, stirring at the rotation speed of 100rpm/min for 40min while maintaining the temperature, adding 4g of sodium dodecyl benzene sulfonate, and adding part C of water to obtain an aqueous solution B;
(4) stirring the aqueous solution b at the rotating speed of 100rpm/min, adding the aqueous solution a, stirring for 12min, and cooling to the normal temperature to obtain a finished product.
The spraying amount is 0.8L/m2。
Comparative example 1
A wetting type dust suppressant comprises the following components in percentage by mass: CaCl2: 16%, Span-80: 0.2%, glycerin: 0.5%, methylcellulose: 1%, sodium dodecylbenzenesulfonate: 0.4 percent and 81.9 percent of water.
The preparation and use methods are the same as in example 1.
Comparative example 2
A wetting type dust suppressant comprises the following components in percentage by mass: sodium lactate: 16%, Span-80: 0.2%, glycerin: 0.5%, methylcellulose: 1%, sodium dodecylbenzenesulfonate: 0.4%, water: 81.9 percent.
The preparation and use methods are the same as in example 1.
Comparative example 3
A wetting type dust suppressant comprises the following components in percentage by mass: urea: 16%, Span-80: 0.2%, methylcellulose: 1%, sodium dodecylbenzenesulfonate: 0.4%, water: 81.9 percent.
The preparation and use methods are the same as in example 1.
Example 2
A wetting type dust suppressant comprises the following components in percentage by mass: CaCl2：10％、Span-80: 0.1%, glycerin: 2%, xanthan gum: 0.7%, sodium fatty acid ethyl ester sulfonate: 0.3%, sodium lactate: 0.2%, urea: 0.9%, water: 85.8 percent.
The preparation method comprises the following steps:
(1) dividing the water into 286g of A, 286g of B and 286g of C, heating the A to 60 ℃, and heating B, C to 50 ℃;
(2) 1g of Span-80, 7g of xanthan gum and 100g of CaCl2Mixing uniformly, mixing with part A of water, stirring at the rotation speed of 300rpm/min for 30min, and cooling to room temperature to obtain an aqueous solution a;
(3) mixing 2g of sodium lactate, 20g of glycerol, 9g of urea and part B of water, stirring at the rotation speed of 300rpm/min for 30min while keeping the temperature, adding 3g of sodium fatty acid ethyl ester sulfonate, and adding part C of water to obtain a water solution B;
(4) stirring the aqueous solution b at the rotating speed of 150rpm/min, adding the aqueous solution a, stirring for 8min, and cooling to the normal temperature to obtain a finished product.
The spraying amount is 0.8L/m2。
Example 3
A wetting type dust suppressant comprises the following components in percentage by mass: CaCl2: 5%, Span-80: 0.6%, glycerin: 1%, polyacrylamide: 1%, sodium oleamide acid: 0.5%: sodium lactate: 0.2%, urea: 2%, water: 89.7 percent.
The preparation method comprises the following steps:
(1) dividing the water into 280g of A, 308g of B and 309g of C, heating the A to 55 ℃, and heating B, C to 45 ℃;
(2) 6g of Span-80, 10g of polyacrylamide and 50g of CaCl2Mixing uniformly, mixing with part A of water, stirring at a rotation speed of 200rpm/min for 35min, and cooling to room temperature to obtain an aqueous solution a;
(3) mixing 2g of sodium lactate, 10g of glycerol, 20g of urea and part B of water, stirring at the rotation speed of 200rpm/min for 35min while keeping the temperature, adding 5g of sodium oleamidoate, and adding part C of water to obtain an aqueous solution B;
(4) stirring the aqueous solution b at the rotating speed of 130rpm/min, adding the aqueous solution a, stirring for 10min, and cooling to the normal temperature to obtain a finished product.
The spraying amount is 0.8L/m2。
Example 4
A wetting type dust suppressant comprises the following components in percentage by mass: CaCl2: 7.5%, Span-80: 2%, glycerin: 0.1%, hydroxymethyl cellulose: 2%, sodium oleamide acid: 0.1%, sodium lactate: 0.1%, urea: 0.5%, water: 87.7 percent.
The preparation and use methods are the same as in example 1.
Example 5
A wetting type dust suppressant comprises the following components in percentage by mass: CaCl2: 7.5%, Span-80: 1%, glycerin: 0.5%, hydroxymethyl cellulose: 0.1%, sodium dodecylbenzenesulfonate: 0.6%, sodium lactate: 0.9%, urea: 1.2%, water: 88.2 percent.
The preparation and use methods are the same as in example 1.
Example 6
A wetting type dust suppressant comprises the following components in percentage by mass: CaCl2: 5%, Span-80: 0.1%, glycerin: 0.1%, hydroxymethyl cellulose: 0.1%, sodium dodecylbenzenesulfonate: 0.1%, sodium lactate: 0.1%, urea: 0.5%, water: 94 percent.
The preparation and use methods are the same as in example 1.
Example 7
A wetting type dust suppressant comprises the following components in percentage by mass: CaCl2: 10%, Span-80: 2%, glycerin: 1%, hydroxymethyl cellulose: 2%, sodium dodecylbenzenesulfonate: 0.6%, sodium lactate: 0.9%, urea: 2%, water: 81.5 percent.
The preparation and use methods are the same as example 2.
Example 8
A wetting type dust suppressant comprises the following components in percentage by mass: CaCl2: 20%, Span-80: 6%, glycerin: 3%, hydroxymethyl cellulose: 5%, sodium dodecylbenzenesulfonate: 1%, sodium lactate: 0.1%, urineElement: 0.5%, water: and (4) 64.4%.
The preparation and use methods are the same as example 2.
Example 9
A wetting type dust suppressant comprises the following components in percentage by mass: CaCl2: 1%, Span-80: 6%, glycerin: 3%, hydroxymethyl cellulose: 5%, sodium dodecylbenzenesulfonate: 1%, sodium lactate: 2%, urea: 5%, water: 77 percent.
The preparation and use methods are the same as in example 3.
The dust suppressants prepared in the above 9 sets of examples and comparative examples were tested and the results are shown in tables 1 and 2.
Table 1, examples 1-3 and comparative examples 1-3 dust suppressant test results
Table 2, examples 4 to 9 test results of dust suppressants
Note: dust suppression performance refers to the part 1 of technical conditions of dust suppression in railway coal transportation: determination of dust suppressant (TB/T3201.1) by the method of the wind erosion test; the moisture retention performance is determined according to the general method drying and reducing method for determining the moisture in chemical products (GB/T6284-.
Claims (5)
1. A wetting type dust suppressant for road dust emission is characterized by comprising the following raw material components in percentage by mass:
sodium lactate: 0.1 to 2%
Span-80：0.1～6％
Glycerol: 0.1 to 3 percent
Adhesive: 0.1 to 5 percent
Urea: 0.5 to 5 percent
CaCl2：1～20％
Surfactant (b): 0.1 to 1 percent
Water: and (4) the balance.
2. The dust suppressant according to claim 1, wherein the raw material components are in mass percent:
sodium lactate: 0.1 to 0.9 percent
Span-80：0.1～2％
Glycerol: 0.1 to 1 percent
Adhesive: 0.1 to 2 percent
Urea: 0.5 to 2 percent
CaCl2：5～10％
Surfactant (b): 0.1 to 0.6 percent
Water: and (4) the balance.
3. A dust suppressant according to claim 1 or 2, wherein said binder is one or more of carboxymethyl cellulose, xanthan gum, methyl cellulose and polyacrylamide.
4. A dust suppressant according to claim 1 or 2, wherein the surfactant is one or more of sodium dodecylbenzene sulphonate, fatty alcohol polyoxyethylene ether and OP-10.
5. A method of producing a dust suppressant according to claim 1 or 2, comprising the steps of:
(1) weighing the raw materials according to the mass percentage, dividing water into A, B, C parts, heating A to 50-60 ℃, and heating B, C to 40-50 ℃; wherein the mass ratio of A to B to C is 1: 0.8-1.1;
(2) adding Span-80, binder and CaCl2Uniformly mixing, mixing with part A of water, stirring at a rotation speed of 100-300 rpm/min for 30-40 min under heat preservation, and cooling to room temperature to obtain an aqueous solution a;
(3) mixing sodium lactate, glycerol and urea with the part B water, stirring at the rotation speed of 100-300 rpm/min for 30-40 min under heat preservation, adding a surfactant, and adding the part C water to obtain an aqueous solution B;
(4) stirring the aqueous solution b at the rotating speed of 100-150 rpm/min, adding the aqueous solution a, stirring for 8-12 min, and cooling to normal temperature to obtain a finished product.
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| CN111500261B (en) * | 2020-05-19 | 2023-06-02 | 安吉国千环境科技有限公司 | Ecological environment-friendly road dust suppressant and preparation method thereof |
| CN111732935A (en) * | 2020-06-30 | 2020-10-02 | 中盐工程技术研究院有限公司 | Environment-friendly road special dust suppressant |
| CN111777989B (en) * | 2020-07-27 | 2022-12-27 | 内蒙古博冉科技有限责任公司 | Oily dust suppressant and preparation method thereof |
| CN113249094A (en) * | 2020-09-25 | 2021-08-13 | 兰州天际环境保护有限公司 | Wetting type composite pavement dust suppressant and using method thereof |
| CN112680192A (en) * | 2020-12-30 | 2021-04-20 | 徐州工程学院 | Dust suppressant for road dust control |
| CN113372880A (en) * | 2021-05-26 | 2021-09-10 | 秦皇岛天惠环境科技有限公司 | Antifreezing moisture-retaining dust inhibitor and preparation method thereof |
| CN113480976A (en) * | 2021-08-10 | 2021-10-08 | 北京首创大气环境科技股份有限公司 | Environment-friendly crust dust suppressant for dust emission in storage yard and preparation method thereof |
| CN113480977A (en) * | 2021-08-10 | 2021-10-08 | 北京首创大气环境科技股份有限公司 | Composite low-temperature-resistant moisturizing dust suppressant and preparation method thereof |
| CN115414844B (en) * | 2022-09-21 | 2024-03-26 | 内蒙古裕兴化工有限公司 | Wetting dust suppressant and preparation method and application thereof |
| CN115637132B (en) * | 2022-10-28 | 2024-05-03 | 鞍钢集团矿业有限公司 | Ecological dust suppressant and preparation and use methods thereof |
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| AU6066494A (en) * | 1993-04-22 | 1994-10-27 | David George Reiniger | Dust suppression agent |
| RU2006142360A (en) * | 2004-06-03 | 2008-07-20 | ЗМ Инновейтив Пропертиз Компани (US) | COMPOSITIONS FOR SUPPRESSING DUST FORMATION AND METHODS |
| CN102660227B (en) * | 2012-05-02 | 2013-12-11 | 山西兆益矿用材料有限公司 | Road dust suppressant |
| CN109082265A (en) * | 2018-09-10 | 2018-12-25 | 浙江大学 | A kind of efficient urban road dust suppressant |
| CN110373156B (en) * | 2019-08-29 | 2022-11-01 | 艾珂(上海)环境技术工程有限公司 | Environment-friendly water-soluble bonding type dust suppressant and preparation method thereof |
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