Composite dust suppressant and preparation method thereof

A dust suppressant and composite technology, which is applied in the field of composite dust suppressant and its preparation, can solve the problems of dust suppressant surface tension and low dust suppression efficiency, and achieve high dust suppression efficiency, high dust suppression efficiency, and low dust suppression efficiency. The effect of surface tension

Inactive Publication Date: 2019-02-26
NANJING NARI GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For this reason, what the present invention intends to solve is that existing dust suppressants have the defects of low surface tension and low dust suppression efficiency, and then provide a composite dust suppressant with low surface tension and high dust suppression efficiency and its preparation method

Method used

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  • Composite dust suppressant and preparation method thereof
  • Composite dust suppressant and preparation method thereof
  • Composite dust suppressant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] This embodiment provides a composite dust suppressant and its preparation method. The composite dust suppressant is composed of 30g of surfactant, 55g of natural phenol polyoxyethylene ether, 3g of starch and 22g of deionized water, wherein the surfactant is composed of sodium dodecylbenzenesulfonate and fatty alcohol polyoxyethylene ether. Oxyethylene ether composition, the mass ratio of sodium dodecylbenzenesulfonate and fatty alcohol polyoxyethylene ether is 1:3;

[0036] The preparation method of above-mentioned composite dust suppressant comprises the steps:

[0037] Dissolve the surfactant and natural phenol polyoxyethylene ether in water and disperse for 2.5 hours to obtain a mixture;

[0038] Add starch to the mixture and stir at 1000r / min to obtain a composite dust suppressant.

Embodiment 2

[0040] This embodiment provides a composite dust suppressant and its preparation method. The composite dust suppressant is composed of 25g of surfactant, 60g of C16 isomeric alcohol, 2g of polyvinyl alcohol and 25g of deionized water, wherein the surfactant is composed of sodium cetyl sulfonate and lauryl polyoxygen Vinyl ether composition, the mass ratio of sodium cetyl sulfonate and polyoxyethylene lauryl ether is 1:2;

[0041] The preparation method of above-mentioned composite dust suppressant comprises the steps:

[0042] Dissolving surfactant and C16 isomeric alcohol in water and dispersing for 3 hours to obtain a mixture;

[0043] Add polyvinyl alcohol to the mixture and stir at 800r / min to obtain a composite dust suppressant.

Embodiment 3

[0045] This embodiment provides a composite dust suppressant and its preparation method. The composite dust suppressant is made up of 35g of surfactant, 50g of fatty alcohol polyoxyethylene ether, 4g of amino acid and 20g of deionized water, wherein the surfactant is composed of sodium di-octyl maleate sulfonate and lauryl polyoxyethylene ether, the mass ratio of the maleic acid di-sec-octyl sodium sulfonate and non-lauric alcohol polyoxyethylene ether is 1:4;

[0046] The preparation method of above-mentioned composite dust suppressant comprises the steps:

[0047] Dissolving the surfactant and fatty alcohol polyoxyethylene ether in water, and dispersing for 4 hours to obtain a mixture;

[0048] Add amino acid to the mixture and stir at 1200r / min to obtain a composite dust suppressant.

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Abstract

The invention discloses a composite dust suppressant and a preparation method thereof. The composite dust suppressant is prepared from a surfactant, a wetting agent, a humectant and water in rationally set ratio. Specifically, by greatly reducing the usage amount of the surfactant, greatly increasing the usage amount of the wetting agent and adding a small amount of humectants, the composite dustsuppressant has low surface tension and high dust suppression efficiency. Test results show that the composite dust suppressant has surface tension of less than 21 mN / m, a contact angle of no less than 5 degrees (within 10 s), coal powder settling time of less than 10 s, dust suppression efficiency of more than 90%, a moisture absorption rate of more than 8% and a water content of more than 15%.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a composite dust suppressant and a preparation method thereof. Background technique [0002] With the rapid development of the economy, the problem of environmental pollution has become increasingly prominent, among which suspended particulate matter is an important cause of environmental pollution, and dust from a large number of construction sites and bare land, as one of the sources of suspended particulate matter, has also become the key to the prevention and control of air pollution . The current treatment measures are mainly to cover the bare land with dust-proof nets, spray with fog cannons and use inorganic salt dust suppressants. [0003] Since the holes of the dust-proof net are much larger than the dust particles, the effect of dust suppression is not obvious after being covered with thatch. Moreover, the quality of dust-proof nets on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22
CPCC09K3/22
Inventor 孙怡张世帅鞠振福靳昕吴刘锁李鹏徐泽强李晓锐
Owner NANJING NARI GROUP CORP
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