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Fire coal dust suppressant and preparation method thereof

A dust suppressant, coal-burning technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of poor anti-evaporation ability, short effective dust suppression time, large water consumption, etc. The effect of good dust effect and simple construction

Active Publication Date: 2010-12-01
广州普凯热伏微能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Among the above three methods, the dust suppression method by sprinkling water is simple and easy to implement, but due to the strong water seepage ability and poor evaporation resistance of the surface materials, the water evaporates quickly, and the effective dust suppression time is very short (less than half an hour in summer).
In order to ensure that the material contains a certain amount of water, the water consumption is very large, and the use of this method in water-scarce areas is limited, and the efficiency of using water mist spraying to suppress coal dust is low, and the treatment capacity of coal-containing wastewater is increased. In addition, frequent watering It will increase the speed of natural weathering of materials, easily produce respirable dust and affect the properties of materials; the cycle of landscaping dust removal method is too long, and it is not suitable for temporary dust sites; the dust suppressant currently used for chemical dust suppression is aimed at the effect of coal-fired dust suppression Not ideal, therefore, it is necessary to disclose a more convenient and effective coal-fired dust suppressant

Method used

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  • Fire coal dust suppressant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Prepare coal-fired dust suppressant according to the following steps:

[0042] The first step: in a dry nitrogen environment, add 100 parts of polyether diols with a molecular weight of 1000, 100 parts of polyether diols with a molecular weight of 2000, 80 parts of isophorone diisocyanate, 20 parts of epoxy resin E-51, then add 5 parts of dibutyltin dilaurate T-12, mix well and then heat up to 80°C for 1.5 hours;

[0043] The second step: add 10 parts of 2,2-dimethylolpropionic acid into the three-necked flask, and react at 80°C for 0.5 hours;

[0044] The third step: add 3 parts of diethylene glycol and acetone whose weight is 1 times of the reactant obtained in the second step to the three-necked flask, and react at 50°C for 1.5 hours. polymer, the prepolymer is poured out of the reactor;

[0045] Step 4: Add 3 parts of triethylamine and 200 parts of deionized water to the prepolymer, and stir with a mixer at a rate of 1800 rpm for 10 hours at room temperature to ob...

Embodiment 2

[0048] Prepare coal-fired dust suppressant according to the following steps:

[0049] The first step: under the environment of dry nitrogen, add 200 parts of polyether diols with a molecular weight of 1000, 200 parts of polyether diols with a molecular weight of 2000, 100 parts of isophorone diisocyanate, 35 parts of epoxy resin E-51, then add 15 parts of dibutyltin dilaurate T-12, mix well and then heat up to 90°C for 2.5 hours;

[0050] The second step: add 20 parts of 2,2-dimethylolpropionic acid to the three-necked flask, and react at 90°C for 1.5 hours;

[0051] Step 3: Add 10 parts of diethylene glycol and acetone twice the weight of the reactant obtained in the second step to the three-necked flask, and react at 70°C for 2.5 hours. After the reaction is completed, let it stand until the temperature is 45°C. polymer, the prepolymer is poured out of the reactor;

[0052] Step 4: Add 10 parts of triethylamine and 300 parts of deionized water to the prepolymer, and stir w...

Embodiment 3

[0055]The first step: in a dry nitrogen environment, add 150 parts of polyether diols with a molecular weight of 1000, 150 parts of polyether diols with a molecular weight of 2000, 90 parts of isophorone diisocyanate, 28 parts of epoxy resin E-51, then add 10 parts of dibutyltin dilaurate T-12, mix evenly and heat up to 85°C for 2 hours;

[0056] The second step: add 15 parts of 2,2-dimethylolpropionic acid to the three-necked flask, and react at 85°C for 1 hour;

[0057] The third step: add 5 parts of diethylene glycol and acetone whose weight is 1.2 times the weight of the reactant obtained in the second step to the three-necked flask, and react at 60°C for 2 hours. After the reaction is completed, let it stand until the temperature is 40°C. polymer, the prepolymer is poured out of the reactor;

[0058] Step 4: Add 5 parts of triethylamine and 280 parts of deionized water to the prepolymer, and stir with a mixer at a rate of 1500 rpm for 15 hours at room temperature to obta...

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Abstract

The invention discloses a fire coal dust suppressant and a preparation method thereof. The fire coal dust suppressant is prepared from isophorone diisocyanate or hexamethylene diisocyanate, polyether glycol of which the molecular weight is 1,000, polyether glycol of which the molecular weight is 2,000, diethylene glycol, epoxy resin E-51 or epoxy resin E-40 or epoxy resin E-20, 2,2-dimethylolpropionic acid, dibutyltin dilaurate T-12 or dibutyltin dilaurate T-9, triethylamine or quadrol and deionized water in a weight ratio through a reaction. The fire coal dust suppressant has the advantages of low production cost, environmental-friendly products, easy spraying, simple construction and good film-forming effect of fire coal surfaces.

Description

technical field [0001] The invention relates to a dust suppressant, in particular to an environment-friendly dust suppressant used in coal-fired transportation and storage. Background technique [0002] Coal-fired power generation is still one of the main methods of power production in my country. With the vigorous promotion of energy conservation and consumption reduction, the single-unit and total installed capacity of each power plant has continued to expand, and the total coal consumption and coal storage have continued to rise. [0003] During coal storage or short-distance transportation, coal powder or smaller particles will be scattered with the wind or washed away with rain, which not only causes waste, but also pollutes the surrounding air and water environment. According to relevant statistical data, the loss of coal-fired open-air storage in power plants due to wind and rain is about 1.5%. In order to reduce the loss of coal combustion, major power plants try to...

Claims

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Application Information

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IPC IPC(8): C09K3/22C08G18/66C08G18/58C08G18/48C08G18/12C08J3/03
Inventor 贺光辉张铭郭德华
Owner 广州普凯热伏微能源科技有限公司
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