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Power plant coal conveying system environment-friendly type composite dust depositing agent

A coal conveying system and an environment-friendly technology, which can be applied to other chemical processes, chemical instruments and methods, etc., can solve the problem of poor long-term effect of dust suppressants, and achieve the effect of preventing coal dust and secondary dust.

Inactive Publication Date: 2014-09-03
SHANGHAI YICHEN AUTOMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide an environment-friendly composite dust-reducing agent for the coal handling system of a power plant, which solves the problem of poor long-term effect of the existing dust-reducing agent, and enables the water mist to quickly absorb, moisten, coat and Coagulate the coal dust, and at the same time keep the coal dust that has settled on the coal surface moist for a long time and form a firm film to prevent secondary dust

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Taking the configuration of 10 kg of formula solution as an example, the formula can be scaled up according to the needs. Surfactant adopts sodium dodecylsulfonate, accounts for 30%, namely 3 kilograms, polyacrylamide accounts for 5 percent, namely 0.5 kilograms, hygroscopic agent adopts starch grafted sodium polyacrylate, accounts for 30%, namely 3 kilograms. Organosilane defoamer accounts for 1%, ie 100g. Make up 10 kg with 3.4 kg of remaining water. Pour into the container of stirring equipment and stir for at least 3 hours to obtain a well-mixed solution. The solution is a colorless, odorless, viscous transparent aqueous solution.

[0025] Add the above products into the automatic dosing device, set the ratio of the solution to 1:1000, spray it on the coal dust through the spray equipment, measure the concentration of coal dust with a dust concentration tester near the dust point, and spray it with pure water Compared with the effect, the dust reduction effect is...

Embodiment 2

[0027] Taking the configuration of 10 kg of formula solution as an example, the formula can be scaled up according to the needs. Surfactant adopts sodium lauryl sulfate, accounts for 20%, namely 2 kilograms, polyacrylamide accounts for 10%, promptly 1 kilogram, hygroscopic agent adopts carboxymethyl starch sodium, accounts for 35%, promptly 3 kilograms. The organosilane defoamer accounts for 0.1%, ie 10g. Make up 10 kilograms with 3.49 kilograms of remaining water. Pour into the container of stirring equipment and stir for at least 3 hours to obtain a well-mixed solution. The solution is a colorless, odorless, viscous transparent aqueous solution.

[0028] Add the above products into the automatic dosing device, set the solution ratio to 1:500, spray it on the coal dust through the spray equipment, measure the concentration of coal dust with a dust concentration tester near the dust point, and spray it with pure water Compared with the effect, the dust reduction effect is 1...

Embodiment 3

[0030] Taking the configuration of 10 kg of formula solution as an example, the formula can be scaled up according to the needs. Surfactant adopts two (2-ethylhexyl) sodium sulfosuccinate, accounting for 40%, that is 4 kg, polyacrylamide accounts for 10%, that is 1 kg, hygroscopic agent adopts starch grafted acrylonitrile, accounting for 40%, That is 4 kg. Organosilane defoamer accounts for 0.5%, ie 50g. Make up 10 kilograms with 0.95 kilograms of remaining water. Pour into the container of stirring equipment and stir for at least 3 hours to obtain a well-mixed solution. The solution is a colorless, odorless, viscous transparent aqueous solution.

[0031] Add the above products into the automatic dosing device, set the solution ratio to 1:2000, spray it on the coal dust through the spray equipment, use the dust concentration tester to measure the coal dust concentration near the dust point, and spray it with pure water Compared with the effect, the dust reduction effect is...

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Abstract

The invention discloses a power plant coal conveying system environment-friendly type composite dust depositing agent, which comprises the following components by weight: 20-40% of surfactant, 1-20% of coagulation agent, 30-40% of moisture absorbent, 0.1-1% of antifoaming agent and the balance of water. The dilution proportion of the dust depositing agent can be freely adjusted between 1: 200 and 1: 2000, dust depositing can be rapidly realized, and reentrainment of dust can be avoided in a long time.

Description

technical field [0001] The invention relates to a dust-reducing agent, in particular to an environment-friendly composite dust-reducing agent for the coal conveying system of a power plant. Background technique [0002] At present, the dust suppression systems used in the coal transportation system of coal-fired power plants are mainly water spray, electrostatic precipitator, multi-tube impact, and bag dust removal. In the past two years, high-pressure micro-mist systems have gradually become popular with relatively better dust suppression effects, but due to The surface of coal dust is obviously hydrophobic, so the high-pressure micro-mist system that only uses clean water still has the problem of low dust capture and adsorption efficiency by droplets. At present, some manufacturers try to solve the problem of adsorption efficiency by increasing the spray volume. However, at the same time, the water content of coal-fired coal increases and the combustion efficiency of power...

Claims

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Application Information

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IPC IPC(8): C09K3/22
Inventor 胡鸣冯瓴付小龙
Owner SHANGHAI YICHEN AUTOMATION TECH
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