Environmental-protection composite dust suppressant, and preparation method thereof

A composite dust suppressant technology, applied in chemical instruments and methods, and other chemical processes, can solve problems such as being easily washed away by rain, lack of coupling mechanism between surfactants and polymer materials, and high preparation costs, achieving Good biodegradability, high production and application value, effect of reducing heavy metal content

Inactive Publication Date: 2019-11-01
江苏乐尔环境科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But, the effect of dust suppressant in the prior art is poor, and has certain harmfulness to environment: (1) wettability dust suppressant, has corrosiveness, has certain harm to plant, and its lack is to surfactant and Understanding of the coupling mechanism of polymer materials; (2) Adhesive dust suppressant, which is difficult to control in the actual production process; poor emulsifying performance, not easy to degrade, high residual rate, easy to cause secondary pollution; (3) cohesive dust suppressant Dust agent, which has a corrosive effect on automobile tires and metal parts, is easily washed away by rainwater, and pollutes the soil environment; the preparation cost of most products is relatively high

Method used

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  • Environmental-protection composite dust suppressant, and preparation method thereof

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Effect test

Embodiment 1

[0025] An environmentally friendly composite dust suppressant, comprising the following components by weight: 40 parts of modified starch, 5 parts of wetting agent, 0.5 part of adsorbent and 0.1 part of crosslinking agent, the wetting agent is sodium dodecylsulfonate, The adsorbent is chitin, the crosslinking agent is triallyl cyanurate, and the modified starch is modified by dual-frequency ultrasonic waves;

[0026] Its preparation method comprises the following steps:

[0027] S1: Preparation of modified starch: take deionized water, disperse starch evenly in it, prepare starch milk, the mass fraction of starch milk is 32%, and place it under the condition of double-frequency ultrasonic wave, take it out and put it in Dried in a drying oven until the water content is 7%, and then crushed to obtain modified starch, wherein the dual-frequency ultrasonic conditions include working power, single working time, intermittent time, total working time, working frequency and working t...

Embodiment 2

[0031] An environmentally friendly composite dust suppressant, comprising the following components by weight: 60 parts of modified starch, 15 parts of wetting agent, 5 parts of adsorbent and 3 parts of crosslinking agent, the wetting agent is sodium polyacrylate and fluorosurfactant , the adsorbent is chitin and chitosan, the crosslinking agent is triallyl cyanurate, and the modified starch is modified by dual-frequency ultrasonic waves;

[0032] Its preparation method comprises the following steps:

[0033] S1: Preparation of modified starch: take deionized water, disperse starch evenly in it, prepare starch milk, the mass fraction of starch milk is 38%, and place it under the condition of double-frequency ultrasonic wave, take it out and put it in a dry place after the treatment is completed Oven drying, until the water content is 10%, and then pulverized to obtain modified starch, wherein, the dual-frequency ultrasonic conditions include working power, single working time, ...

Embodiment 3

[0037] An environmentally friendly composite dust suppressant, comprising the following components by weight: 50 parts of modified starch, 10 parts of wetting agent, 2.5 parts of adsorbent and 1.5 parts of crosslinking agent, the wetting agent is sodium dodecylbenzenesulfonate , the adsorbent is chitosan, the crosslinking agent is triallyl cyanurate, and the modified starch is modified by dual-frequency ultrasonic waves;

[0038] Its preparation method comprises the following steps:

[0039] S1: Preparation of modified starch: take deionized water, disperse starch evenly in it, prepare starch milk, the mass fraction of starch milk is 35%, and place it under the condition of double-frequency ultrasonic wave, take it out and put it in the dry place after the treatment is completed Oven-dried to 8% water content, then crushed to obtain modified starch, wherein, the dual-frequency ultrasonic conditions include working power, single working time, intermittent time, total working ti...

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Abstract

The invention discloses an environmental-protection composite dust suppressant. The environmental-protection composite dust suppressant comprises following components, by weight, 40 to 60 parts of modified starch, 5 to 15 parts of a wetting agent, 0.5 to 5 parts of an adsorber, and 0.1 to 3 parts of a crosslinking agent. A preparation method comprises following steps: 1, modified starch preparation; 2, mixed raw material emulsion preparation; and 3, ultraviolet radiation reaction. The components are simple; effect is excellent; excellent biodegradability is achieved; no secondary environment pollution is caused; in the preparation method, high efficiency supersonic wave is adopted in starch modification firstly, and then grafting of an action component monomer and a surfactant onto the surface of starch is carried out, so that dust suppressant formed film is more strong, wetting and water adsorption effect is better and lasts long. The preparation method is simple, and is convenient tocontrol; production cost is low; the raw materials are easily available; the environmental-protection composite dust suppressant is friendly to the environment, and possesses a plurality of functionsincluding wetting capacity, bonding performance, and coagulation capacity, and is a multi-functional chemical dust suppressant.

Description

technical field [0001] The invention relates to the technical field of dust suppressants, in particular to an environment-friendly composite dust suppressant and a preparation method thereof. Background technique [0002] Dust is fine particles produced during mine mining, storage, loading and unloading, transportation and stockpiling, which can be suspended in the atmosphere for a long time, causing the visibility of the surrounding atmosphere to decrease, polluting the environment, causing operators to suffer from pneumoconiosis, etc. mine safety accidents. Among the dust suppression technologies in the prior art, wet spray dust suppression is a commonly used technology, but due to the hydrophobic nature of dust particles, water mist dust suppression can only temporarily settle large particles of dust through collisions, interceptions, etc. After the water evaporates, it is subjected to external forces. The effect will be suspended again, and the purpose of effective dust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22
CPCC09K3/22
Inventor 宁少华
Owner 江苏乐尔环境科技股份有限公司
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