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A kind of preparation method of environment-friendly coal mine dedusting agent

A kind of dust suppressant, environmental protection technology, applied in the field of preparation of environmental protection coal mine dust suppressant, can solve the problems of secondary pollution, poor wettability, increase dust agglomeration ability, etc., and achieve the effect of easy operation and low cost

Active Publication Date: 2018-10-19
浦塔环保科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the current dust suppressant has poor wettability, evaporates quickly, and easily causes the dust to be raised again to form secondary pollution, resulting in poor dust fall effect. Decompose the protein in it by enzymatic hydrolysis, extract the natural surfactant and amino acid in it by ethanol, then mix it with starch, modify the starch under the action of microwave, mix it with hydroxymethyl cellulose, act on thiourea and formaldehyde, then branch modification to increase coagulation, and then by extracting plant tannins and polyphenols in sweet tea, improving water tension, increasing water permeability and bonding force with dust, and finally mixing to prepare a powder that increases the agglomeration ability of dust itself , improve water tension to increase wettability, improve dust reduction rate and easy to decompose environment-friendly coal mine dust suppression agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] According to the volume ratio of 2:3, take egg yolk and calcium chloride solution with a mass fraction of 10% and put it into an ultrasonic oscillator, vibrate at 32kHz for 6min, then add absolute ethanol with 1 times the volume of egg yolk, and put it in a water bath at 45°C In the medium, after preheating for 38 minutes, add 1.3% neutral protease of egg yolk quality, and stir the enzymolysis at 130r / min for 4h; For the supernatant, according to the material-to-liquid ratio of 1:3, take the starch and the supernatant and put them in a microwave oven, heat them at 300W for 20 minutes, then take them out and put them in a rotary evaporator, remove the ethanol solution by rotary evaporation at 80°C, and collect the residue; In parts by weight, take 26 parts of the above-mentioned residue, 36 parts of hydroxymethylcellulose, 15 parts of 20% hydrogen peroxide solution, 3 parts of thiourea and 1 part of formaldehyde. Stir the cellulose evenly, put it into the reaction kettle...

example 2

[0021]According to the volume ratio of 2:3, take egg yolk and calcium chloride solution with a mass fraction of 10% and put it into an ultrasonic oscillator, vibrate at 32kHz for 12min, then add absolute ethanol twice the volume of egg yolk, and put it in a 45°C water bath After preheating for 45 minutes, add 1.6% neutral protease of egg yolk mass, and stir the enzymolysis at 130r / min for 6h; For the supernatant, according to the material-to-liquid ratio of 1:5, take the starch and the supernatant and put them in a microwave oven, heat them at 400W for 30 minutes, then take them out and put them in a rotary evaporator, remove the ethanol solution by rotary evaporation at 80°C, and collect the residue; In parts by weight, take 32 parts of the above-mentioned residue, 34 parts of hydroxymethyl cellulose, 10 parts of 20% hydrogen peroxide solution, 3 parts of thiourea and 1 part of formaldehyde. Stir the cellulose evenly, put it into the reactor after standing at -5°C for 12 minu...

example 3

[0024] According to the volume ratio of 2:3, take egg yolk and calcium chloride solution with a mass fraction of 10% and put them into an ultrasonic oscillator, vibrate at 32kHz for 10min, then add absolute ethanol 1.5 times the volume of egg yolk, and put it in a water bath at 45°C After preheating for 41 minutes, add 1.5% neutral protease of egg yolk mass, and stir the enzymolysis at 130r / min for 5h; For the supernatant, according to the material-to-liquid ratio of 1:4, take the starch and the supernatant and put them in a microwave oven, heat them at 350W for 25 minutes, then take them out and put them in a rotary evaporator, remove the ethanol solution by rotary evaporation at 80°C, and collect the residue; In parts by weight, take 28 parts of the above-mentioned residue, 35 parts of hydroxymethyl cellulose, 12 parts of 20% hydrogen peroxide solution, 5 parts of thiourea and 2 parts of formaldehyde. Stir the cellulose evenly, put it into the reactor after standing at -8°C ...

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PUM

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Abstract

The invention relates to a preparation method of an environment-friendly coal mine dust reducing agent and aims at solving the problem that existing dust reducing agents are low in wettability, high in evaporation speed and prone to enabling dust to raise again to cause secondary pollution leading to poor dust reducing effect. The preparation method includes: using egg yolk as a matrix, decomposing protein in the egg yolk through enzymolysis, and using alcohol to extract natural surfactant and amino acid in the egg yolk; mixing the egg yolk with starch, modifying the starch under action of microwaves, mixing with carboxymethyl cellulose, and performing graft modification under action of thiourea and formaldehyde to improve coacervation effect; extracting vegetable tannin and polyphenol substances in folium rubi suavissimi to lower tension of water and improve permeability of the water and jointing force; mixing to obtain the environment-friendly coal mine dust reducing agent capable of improving agglomeration ability of dust and tension of the water to improve wettability and dust reducing rate and easy to decompose.

Description

technical field [0001] The invention relates to a preparation method of an environment-friendly coal mine dedusting agent, belonging to the technical field of dedusting agents. Background technique [0002] In the coal production process, many processes will produce a lot of dust, such as tunneling, fully mechanized coal cutting, caving, and coal transportation. The hazards of dust are very serious. First of all, it will cause miners who are exposed to dust to suffer from pneumoconiosis. There is no cure for this disease so far, and many front-line workers will suffer from lifelong illness. Secondly, when the concentration of coal dust is too high, certain types of coal may explode, causing coal dust explosion accidents. When underground gas explosions cause deposited coal dust explosions, gas and coal dust explosions will occur. In order to reduce the dust concentration in the workplace, various enterprises have adopted a variety of methods, mainly including: spray dust re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L1/28C08L3/04C08K5/103C08K5/13C08K5/1545E21F5/06
CPCC08L1/284E21F5/06C08L3/04C08K5/103C08K5/13C08K5/1545
Inventor 袁春华宋奇
Owner 浦塔环保科技(上海)有限公司