Dual-component wetting and single-component curing-type antifreezing dust suppressant for coal transportation and storage

A dust suppressant, curing technology, applied in other chemical processes, chemical instruments and methods, etc., to achieve the effect of low cost, environmental protection, better antifreeze and dust suppression effect

Active Publication Date: 2013-08-07
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and the designed antifreeze and dust suppression agent formula for coal transportation and storage has both the functions of "wetting type" and "curing type", so as to achieve more excellent antifreeze and dust suppression Effect; does not affect the calorific value of coal; adopts "clean" surfactant, does not cause environmental pollution

Method used

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  • Dual-component wetting and single-component curing-type antifreezing dust suppressant for coal transportation and storage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Dissolve 0.5 g of triethylene glycol and 0.5 g of Triton X-100 in 100 ml of water to prepare a wetting dust suppressant. Dissolve 0.5 g of magnesium hexafluorosilicate in 1000 ml of water to prepare a solidified dust suppressant. Take 2 kg of 10-30 mesh coal and spray it with 100 ml of wet dust suppressant. Then, spread it on a tray of 30 cm x 21 cm x 3 cm, and spray 100 ml of solidified dust suppressant. Test performance according to TB / T3210.1-2009 railway coal transportation dust suppression technical conditions. Dry at 50°C for 2 hours, then put it into a 30 m / s wind tunnel for 5 minutes, weigh the remaining coal weight, and the wind erosion rate is less than 10 mm. Place the above-mentioned tray in a -40°C refrigerator for 2 hours, and the coal can be dumped after taking it out, which can be considered to have achieved the antifreeze effect.

Embodiment 2

[0028] Dissolve 1.0 g of triethylene glycol and 1.0 g of Triton X-100 in 100 ml of water to prepare a wetting dust suppressant. Dissolve 1.0 g of magnesium hexafluorosilicate in 1000 ml of water to prepare a solidified dust suppressant. Take 2 kg of 10-30 mesh coal and spray it with 100 ml of wet dust suppressant. Then, spread it on a tray of 30 cm x 21 cm x 3 cm, and spray 100 ml of solidified dust suppressant. Test performance according to TB / T3210.1-2009 railway coal transportation dust suppression technical conditions. Dry at 50°C for 2 hours, then put it into a 30 m / s wind tunnel for 5 minutes, weigh the remaining coal weight, and the wind erosion rate is less than 10 mm. Place the above-mentioned tray in a -40°C refrigerator for 2 hours, and the coal can be dumped after taking it out, which can be considered to have achieved the antifreeze effect.

Embodiment 3

[0030] Dissolve 1.5 grams of triethylene glycol and 1.5 grams of Triton X-100 in 100 milliliters of water to prepare a wetting dust suppressant. Dissolve 1.5 grams of magnesium hexafluorosilicate in 1000 milliliters of water to prepare a solidified dust suppressant. Take 2 kg of 10-30 mesh coal and spray it with 100 ml of wetting dust suppressant. Then, spread it on a tray of 30 cm x 21 cm x 3 cm, and spray 100 ml of solidified dust suppressant. Test performance according to TB / T3210.1-2009 railway coal transportation dust suppression technical conditions. Dry at 50°C for 2 hours, then put it into a 30 m / s wind tunnel for 5 minutes, weigh the remaining coal weight, and the wind erosion rate is less than 10 mm. Place the above-mentioned tray in a -40°C refrigerator for 2 hours, and the coal can be dumped after taking it out, which can be considered to have achieved the antifreeze effect.

[0031] Tests have shown that the reduction of high and low calorific value of coal is ...

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Abstract

The invention relates to a dual-component wetting and single-component curing-type antifreezing dust suppressant for coal transportation and storage and belongs to the technical field of dust suppressing and antifreezing of coal. The antifreezing dust suppressant consists of a wetting-type dust suppressant and a curing-type dust suppressant, wherein the wetting-type dust suppressant is an aqueous solution containing tri ethylene glycol and triton X-100; and the curing-type dust suppressant is a magnesium fluosilicate aqueous solution. The wetting-type dust suppressant is used for integrally wetting coal before being loaded or stacked to play dust suppressing and antifreezing roles. After the coal which is integrally sprayed by the wetting-type dust suppressant is loaded onto a truck, the curing-type dust suppressant is sprayed on the surface of the coal to cure the surface, and further, the dust suppressing effect during transportation is enhanced. The antifreezing dust suppressant is simple to prepare and lower in cost, and raw materials are easy to be obtained; the wetting-type dust suppressant and the surface curing-type dust suppressant are used in a matching manner, so that the antifreezing and dust suppressing effects are better; loading and unloading, discontinuous use and heat dissipation during coal combustion are not influenced by the antifreezing dust suppressant; and before coal combustion and during combustion, no pollutant is formed and environmental protection is facilitated.

Description

technical field [0001] The invention designs a formula used in coal transportation and open-air storage and has antifreeze and dust suppression effects, and belongs to the technical field of coal transportation and storage. Background technique [0002] When coal is transported by railway and road or stacked in the open air, fine coal particles are subjected to wind erosion and generate dust, which not only causes coal loss, but also causes environmental pollution. In case of humid weather, coal dust and water vapor form haze, which increases the content of PM2.5 in the atmosphere. In the past, people used coverings to prevent coal from raising dust. However, for large-scale transportation and storage, covering methods cannot fundamentally solve the problem. At present, people use chemical methods to solve the problem of coal dust, that is, spray chemical agents on the surface of coal, or spray on the whole coal during the coal washing process to prevent coal dust. Freezin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/18C09K3/22
Inventor 刘在群
Owner JILIN UNIV
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