Environment-friendly coal transportation antifreezing agent and preparation method thereof

An antifreeze and environment-friendly technology, which is applied in the field of environment-friendly antifreeze for coal transportation and its preparation, can solve the problems of excessive chlorine content in commercial coal and affect export earnings, etc., and achieve the effects of preventing trains from freezing coal, convenient transportation, and safe storage

Inactive Publication Date: 2019-05-21
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, when we prevent coal from freezing in winter, we use calcium chloride antifreeze to introduce a large amount of chlorine. According to the current spraying process, spraying amount and powdering amount, the coal loading capacity of each car is 60 Calculated per ton, the contribution of antifreeze to the chlorine content of coal is 0.2‰, which directly causes the chlorine content in commercial coal to exceed the standard and affects its export earnings

Method used

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  • Environment-friendly coal transportation antifreezing agent and preparation method thereof
  • Environment-friendly coal transportation antifreezing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The environment-friendly antifreeze agent for coal transportation described in this embodiment comprises the following components by weight: 18 parts of potassium acetate, 9 parts of sodium formate, 12 parts of urea, 6 parts of ethylene glycol, 0.5 part of glycerol, 2 parts of sodium benzoate, benzene And triazole 0.06 parts, water 53 parts.

[0024] The environment-friendly antifreeze agent for coal transportation described in this embodiment is prepared according to the following method:

[0025] (1) Take the above-mentioned selected amount of water, potassium acetate, sodium formate, urea, benzotriazole, and sodium benzoate and add them to the reaction kettle for mixing, control the temperature of the reaction system to rise to 60°C and stir for 4 hours until completely dissolved;

[0026] (2) Then add the selected amount of ethylene glycol and glycerol into the reaction kettle in turn, mix and stir until the materials are completely dissolved, then cool down to 10-3...

Embodiment 2

[0028] The environment-friendly antifreeze agent for coal transportation described in this embodiment comprises the following components by weight: 7 parts of potassium acetate, 14 parts of sodium formate, 11 parts of urea, 4 parts of ethylene glycol, 1.0 part of glycerol, 2 parts of sodium benzoate, benzene 0.1 part of triazole and 61 parts of water.

[0029] The environment-friendly antifreeze agent for coal transportation described in this embodiment is prepared according to the following method:

[0030] (1) Take the above-mentioned selected amount of water, potassium acetate, sodium formate, urea, benzotriazole, and sodium benzoate and add them to the reaction kettle for mixing, control the temperature of the reaction system to 80°C and stir for 1 hour until completely dissolved;

[0031] (2) Then add the selected amount of ethylene glycol and glycerol into the reaction kettle in turn, mix and stir until the materials are completely dissolved, then cool down to 10-35°C, a...

Embodiment 3

[0033] The environment-friendly antifreeze agent for coal transportation described in this embodiment comprises the following components by weight: 11 parts of potassium acetate, 12 parts of sodium formate, 10.5 parts of urea, 4 parts of ethylene glycol, 1.0 part of glycerol, 1.5 parts of sodium benzoate, benzene And triazole 0.08 parts, water 60 parts.

[0034] The environment-friendly antifreeze agent for coal transportation described in this embodiment is prepared according to the following method:

[0035] (1) Take the above-mentioned selected amount of water, potassium acetate, sodium formate, urea, benzotriazole, and sodium benzoate and add them to the reaction kettle for mixing, control the temperature of the reaction system to 75°C and stir for 2 hours until completely dissolved;

[0036] (2) Then add the selected amount of ethylene glycol and glycerol into the reaction kettle in turn, mix and stir until the materials are completely dissolved, then cool down to 25°C, a...

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PUM

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Abstract

The invention relates to an environment-friendly coal transportation antifreezing agent which is prepared from the following components in parts by weight: 6-19 parts of potassium acetate, 8-16 partsof sodium formate, 9-15 parts of urea, 2-6 parts of ethylene glycol, 0.5-1.0 part of glycerin, 1-2 parts of sodium benzoate, 0.05-0.1 part of benzotriazole and 41-73 parts of water. The antifreezing agent can reduce the freezing point of coal to be lower than 30 DEG C below zero, is free of any chlorine salt components, fully meets the environment-friendly demand and is not sprayed to equipment and corrodes a train as well.

Description

technical field [0001] The invention belongs to the field of fuel additives, and in particular relates to an environment-friendly antifreeze agent for coal transportation and a preparation method thereof. Background technique [0002] my country is the largest coal production and sales country in the world. Due to the uneven distribution of coal resources in our country, a large amount of coal needs to be transported to the southeast coastal areas by rail. However, coal is prone to freezing during loading, unloading, staying, and transportation in winter, which is a major problem that plagues coal enterprises. At present, after coal washing in my country, the residual moisture in the coal ranges from 6.5% to 14%. The moisture exists in an adsorbed state and a free state. In winter, the coal at the bottom of the train, water and the bottom of the carriage will freeze together. When no antifreeze is used, the amount of frozen coal accounts for about 7% to 14% of the coal loadi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/18
Inventor 王玉超杭智军谢恩情韩勇刘鲤粽叶雷白飞飞赵昕楠于维雨杨义维
Owner CCTEG CHINA COAL RES INST
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