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Preparation method of long-acting stable type foam dust suppressant material

A stable, dust-suppressant technology, which is applied in the field of preparation of long-term stable foam dust-suppressant materials, can solve the problems of poor timeliness, large material consumption, and poor effect, so as to improve the suppression efficiency and action timeliness , long life, increase the effect of dust suppression effect

Inactive Publication Date: 2019-05-17
雷江文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention: Aiming at the problem that the existing foam dust removal effect is remarkable but the timeliness is not good, resulting in huge material consumption and poor effect, a preparation method of a long-lasting and stable foam dust suppressant material is provided

Method used

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  • Preparation method of long-acting stable type foam dust suppressant material

Examples

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Effect test

example 1

[0030] Take 500g Thuja slices and place them in a supercritical carbon dioxide extraction device, control the extraction pressure to 20MPa, the extraction temperature to 45℃, the carbon dioxide flow rate is 1.5L / min, the separation temperature is 50℃, and the extract is collected after 45min static extraction. And filter, collect the filtrate to obtain Thuja essential oil; in parts by weight, weigh 45 parts of Thuja essential oil, 10 parts by mass 85% ethanol solution and 25 parts by mass 30% sulfuric acid solution in a beaker, stir and mix and Incubate the reaction at 45℃ for 6h, let it stand and cool to room temperature, obtain the reaction solution and place it in a separatory funnel, stand for layering and collect the upper oil phase. Use saturated sodium bicarbonate solution at 25℃ for the upper oil phase After neutralizing to pH 7.0, washing with deionized water twice, separating and collecting the reaction oil phase by distillation; add corn starch to deionized water at a...

example 2

[0032] Take 500g Thuja slices and place them in a supercritical carbon dioxide extraction device, control the extraction pressure to 25MPa, extraction temperature to 47°C, and collect the extract after the carbon dioxide flow rate is 1.7L / min, the separation temperature is 52°C and static extraction for 47 minutes. And filter, collect the filtrate to obtain Thuja essential oil; in parts by weight, respectively weigh 47 parts of Thuja essential oil, 12 parts of 85% ethanol solution and 27 parts of 30% sulfuric acid solution in a beaker, stir and mix and Incubate the reaction at 47℃ for 7 hours, let it stand and cool to room temperature, obtain the reaction solution and place it in a separatory funnel, stand still to separate the layers and collect the upper oil phase. Use saturated sodium bicarbonate solution at 25℃ for the upper oil phase After neutralizing to pH 7.0, washing with deionized water twice, separating and collecting the reaction oil phase by distillation; add corn s...

example 3

[0034] Take 500g of Thuja slices and place them in a supercritical carbon dioxide extraction device, control the extraction pressure to 30MPa, the extraction temperature to 50℃, the carbon dioxide flow rate is 2.0L / min, the separation temperature is 55℃, and the extract is collected after 60min static extraction. And filter, collect the filtrate to obtain Thuja essential oil; in parts by weight, respectively weigh 50 parts Thuja essential oil, 15 parts by mass 85% ethanol solution and 30 parts by mass 30% sulfuric acid solution in a beaker, mix and mix Incubate the reaction at 50℃ for 8h, let it stand and cool to room temperature, obtain the reaction solution and place it in a separatory funnel, stand for layering and collect the upper oil phase. Use saturated sodium bicarbonate solution at 25℃ for the upper oil phase After neutralizing to pH 7.0, washing with deionized water for 3 times, separating and collecting the reaction oil phase by distillation; adding corn starch to dei...

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Abstract

The invention relates to a preparation method of a long-acting stable type foam dust suppressant material, and belongs to the technical field of the dust suppressant materials. According to a technical scheme of the invention, supercritical carbon dioxide is adopted to carry out extraction, so that thuja sutchuenensis essential oil can be effectively extracted and used as a raw material; when bubbles are generated, surfactant molecules are distributed on the surface of a liquid membrane, and the surfactant molecules are large in viscosity, thus being easy to form a surface membrane with high strength; therefore, the liquid membrane is difficult to break and the service lives of foams are also relatively long; meanwhile, the material prepared by the invention effectively reduces surface tension so as to be beneficial to the dispersion of air in liquid, prevent merger among the foams, be beneficial to the formation of micro bubble structures, generate a great amount of foam and improve efficiency of a foam dust suppressant; by reducing the surface tension of water, a contact angle between water and dust is reduced, so that an aqueous solution has relatively high wettability and adhesivity to the dust; the affinity of water to the dust is improved; and the wetting capacity and dust suppression effect of water to the dust are improved, thereby further improving the suppressing efficiency and action time-effect of the foam dust suppressant material to the dust.

Description

Technical field [0001] The invention relates to a preparation method of a long-acting stable foam dust suppressant material, belonging to the technical field of dust suppressant materials. Background technique [0002] The major influence on the wettability of coal dust is the oxygen-containing functional groups on the surface of coal dust. The oxygen-containing functional groups contained in coal can be divided into three categories: carbon-oxygen single bonds, carbonyl groups and carboxyl groups, which are closely related to the surface electrical properties, hydrophobicity, and hydrophilicity of coal dust. The wettability of coal dust is inseparable from the chemical composition, surface properties, structure and mineral composition and content of coal dust. Among the oxygen-containing functional groups of coal dust, aliphatic hydrocarbons and aromatic hydrocarbons mainly determine the surface hydrophobicity of coal dust Hydroxyl group, carboxyl group and carbonyl group mainl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22
Inventor 雷江文
Owner 雷江文
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