A Composite Inhibitor for Preventing Spontaneous Combustion of Coal Powder

A chemical inhibitor and spontaneous combustion technology, applied in fire prevention, dust prevention, safety devices, etc., can solve problems such as delaying coal spontaneous combustion process
CN103306710BInactive Publication Date: 2015-10-28SHENMU ZHANGJIAMAO COAL MINING CO LTD OF SHAANXI COAL & CHEM IND GRP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENMU ZHANGJIAMAO COAL MINING CO LTD OF SHAANXI COAL & CHEM IND GRP
Publication Date
2015-10-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a compound stopping agent for preventing pulverized coal from spontaneous combustion and a preparation method of the compound stopping agent. The compound stopping agent mainly comprises a component A and a component B, wherein the component A comprises 70%-90% of a penetrant and 10%-30% of peroxide; the component B comprises inorganic salt. The component A and the component B are mixed at a weight ratio of 1:(1.5-3) and used as the compound stopping agent. The preparation method comprises steps as follows: firstly, the penetrant is prepared into an aqueous solution, then the peroxide is dissolved in the penetrant, and the mixture is stirred, so that the component A of the stopping agent is obtained; the component A is matched with the inorganic salt of the component B for use. The compound stopping agent has the characteristics of low cost and non-toxic. During the use, the component A and the component B of the stopping agent are jointly and uniformly added to the pulverized coal, the operation is simple, the stopping effect is excellent, and the compound stopping agent has a wide application prospect.
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Description

technical field

[0001] The invention relates to a composite inhibitor, in particular to a composite inhibitor suitable for preventing spontaneous combustion of pulverized coal in the coal industry. technical background

[0002] Spontaneous combustion of coal is mainly caused by the heat released by the recombination of coal and oxygen, and it mainly goes through four stages: physical adsorption, chemical adsorption, formation of intermediate transition products, and product decomposition. The whole process of coal spontaneous combustion is like a chain reaction, one ring after another, as long as one of the rings is broken, the whole reaction will be terminated. In the process of coal-oxygen recombination, the interaction between coal and oxygen at low temperature is initially dominated by physical adsorption, and after the physical adsorption reaches equilibrium, it is dominated by chemical adsorption. The chemical adsorption process has the most important influence on coal...

Claims

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