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An environmentally friendly ionic liquid inhibitor for inhibiting spontaneous combustion of coal

A technology of ionic liquid and coal spontaneous combustion, which is applied in the field of liquid inhibitors, can solve the problems of inhibitor recycling, environmental pollution, and increased fire extinguishing costs, and achieve the effects of reduced activation, simple operation, and inhibition of coal spontaneous combustion

Inactive Publication Date: 2018-10-23
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
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Problems solved by technology

[0003] At present, the inhibitors only solve the spontaneous combustion of coal unilaterally, and the inhibitors have never been recycled, which causes environmental pollution and increases the cost of fire fighting

Method used

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  • An environmentally friendly ionic liquid inhibitor for inhibiting spontaneous combustion of coal

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Embodiment Construction

[0019] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] The embodiment of the present invention provides an environment-friendly ionic liquid inhibitor for suppressing spontaneous combustion of coal, which is composed of [BMIM][I] ionic liquid and water according to a certain ratio; the [BMIM][I] ionic liquid is an alkali It is a liquid salt solution, which is easily soluble in water and ethanol, but hardly soluble in ether and alkanes. The thermal decomposition temperature is 265°C.

[0021] The specific method of the invention is based on the tendency of coal spontaneous combustion, the grade of coal spontaneous combustion tendency is coal that is easy to spontaneous combustion, and the conc...

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Abstract

The invention discloses an environment-friendly ionic liquid retardant for inhibiting spontaneous combustion of coal. The ionic liquid retardant is prepared from [BMIM][I] ionic liquid and water according to a certain ratio, wherein the [BMIM][I] ionic liquid is an alkaline salt solution, is soluble in water and ethanol, is insoluble in diethyl ether and alkane and has the thermal decomposition temperature of 265 DEG C. According to the ionic liquid retardant disclosed by the invention, the activity of the coal is lowered, the spontaneous combustion of the coal can be thoroughly inhibited, and the retardant can be recycled; and the ionic liquid retardant is applicable to places, where coal dust is easily accumulated, such as coal bunkers and factories, is simple in operation and is economical and applicable.

Description

technical field [0001] The invention relates to the field of liquid inhibitors, in particular to an environment-friendly ionic liquid inhibitor for inhibiting coal spontaneous combustion. Background technique [0002] Coal spontaneous combustion can cause huge property damage. my country is a large coal-producing country, and it has been found that there are 56 burning coalfield fire areas in our country, with a cumulative area of ​​720Km 2 , 20 million tons of coal are burned directly every year, and 200 million tons of resources are destroyed. Xinjiang has 55% of the coalfield fire area, with an area of ​​111.50Km 2 , has lost more than 2 billion tons of coal. There are 10~13Km 2 It is burning, burning 10.03 million tons of coal every year. According to the coal-oxygen recombination mechanism, the main reason for coal spontaneous combustion is that coal gradually releases heat during the oxidation process to achieve the environment required for spontaneous combustion....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K21/10
CPCC09K21/10
Inventor 邓军肖旸白祖锦徐启铭王彩萍易欣
Owner XIAN UNIV OF SCI & TECH
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