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Chloride-free railway transportation coal antifreezing agent

An antifreeze, railway technology, applied in other chemical processes, chemical instruments and methods, etc., can solve problems such as low efficiency, low adhesion, equipment corrosion, etc., and achieve the effects of convenient spraying, good adhesion, and excellent antifreeze performance

Inactive Publication Date: 2019-07-19
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because calcium chloride antifreeze contains a large amount of chlorine, it brings new problems to the export and utilization of coal. When the amount of chlorine-containing coal antifreeze reaches a certain concentration, it will also affect train carriages, production, Corrosion of storage and spraying equipment
In addition, due to the low viscosity and low adhesion of calcium chloride diluent, the efficiency of preventing coal from freezing is not high

Method used

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  • Chloride-free railway transportation coal antifreezing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Materials will be weighed according to the dosage ratio (mass percentage), according to water 40%, glycerol 10%, sodium formate 25%, urea 10%, sodium nitrite 8%, sodium carbonate 2%, triethanolamine borate 2%, 1% of phenylethanolamine, 1.5% of polyethylene glycol, and 0.5% of benzotriazole are sequentially put into a reaction kettle, stirred evenly at room temperature, and filled with products to obtain a chlorine-free antifreeze agent for railway coal transportation.

Embodiment 2

[0013] The materials will be weighed according to the dosage ratio (mass percentage), according to water 50%, glycerol 5%, sodium formate 20%, urea 10%, sodium nitrite 8%, sodium carbonate 2%, triethanolamine borate 2%, 1.2% of phenylethanolamine, 1.6% of polyethylene glycol, and 0.2% of benzotriazole are successively put into the reaction kettle, stirred evenly at room temperature, and the products are filled to obtain the chlorine-free railway coal transportation antifreeze.

[0014] Implementation Effect

[0015] 1. Various performances such as freezing point, low-temperature stability, and metal corrosion rate of the chlorine-free railway coal transport antifreeze of embodiment 1 and 2 are measured. The low-temperature stability is measured in a constant temperature box at -25°C, and it is allowed to stand for 168 hours. It is required that there is no precipitate and the liquid remains uniform and fluid; Spray on the surface of the steel sheet, place it vertically on the...

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Abstract

The invention discloses a chloride-free railway transportation coal antifreezing agent, and belongs to the technical field of coal antifreezing agents. The chloride-free railway transportation coal antifreezing agent comprises 20-28% of sodium formate, 5-15% of glycerol, 8-10% of urea, 7-8% of sodium nitrite, 2-3% of sodium carbonate, 2-3% of triethanolamine borate, 1-2% of phenylethanolamine, 1-2% of polyethylene glycol, 0.1-1% of benzotriazole, and 40-50% of water. The antifreezing performance is excellent, the freezing point is lower than minus 30 DEG C, the wall hanging effect is good, theadhesiveness is good, the viscosity is moderate, the chloride-free railway transportation coal antifreezing agent is convenient to spray, contains no chloride, meets the requirement on chloride content of export coal, and is nonirritant to and has no harmful effect on the skin of an operation staff.

Description

technical field [0001] The invention relates to a chlorine-free railway coal transportation antifreeze. Specifically, the present invention relates to a kind of antifreezing agent for railway coal transportation which contains organic salt, inorganic salt and polyhydric alcohol as main components and does not contain chlorine element. Background technique [0002] After the coal is washed, the residual moisture content in the coal is relatively high. During the coal storage or transportation, the free water gradually concentrates at the bottom of the coal seam. In the cold winter, the coal, water at the bottom of the coal seam and the bottom of the transport car Frozen together, when no antifreeze is used, the amount of frozen coal accounts for about 7% to 14% of the amount of coal loaded in each car. Frozen coal is difficult to load and unload, causing problems of pressing cars, lines or ports, affecting normal production and turnover of wagons. [0003] Many methods are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/18
CPCC09K3/18
Inventor 李振涛翟晶杭智军王玉超谢恩情韩勇刘鲤粽赵昕楠于维雨叶雷夏卓飞于坤白飞飞孔令坡杨义维罗海平李硕林
Owner CCTEG CHINA COAL RES INST
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