Oxidation reduction double blocking-based coal spontaneous combustion intelligent compound retardant and preparation method thereof

A technology of coal spontaneous combustion and chemical inhibitor, applied in the directions of dust prevention, fire prevention, mining equipment, etc., can solve the problems of poor resistance effect of floating coal, ignoring the key role of carbon free radicals, weak deep penetration energy of floating coal, etc.

Active Publication Date: 2018-10-12
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above-mentioned existing problems, the present invention only aims at the high oxidation free radicals in coal spontaneous combustion and ignores the key role of carbon free radicals in the coal spontaneous combustion process for the existing coal spontaneous combustion retardant, and the anti-o

Method used

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  • Oxidation reduction double blocking-based coal spontaneous combustion intelligent compound retardant and preparation method thereof

Examples

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Example Embodiment

[0024] Example 1:

[0025] In this embodiment, the intelligent composite inhibitor for coal spontaneous combustion based on redox dual blocking function, the specific preparation process is: add 10g acrylic monomer into 200ml water, stir and dissolve, titrate and neutralize with 20% sodium hydroxide solution to pH value 7. After cooling, add the neutralization solution to the four-neck flask of the synthesis vessel; add 10g of acrylamide monomer at the same time, and set the mass concentration to 80g / L -1 Add 200ml of the guar gum aqueous solution to the four-necked flask and stir thoroughly. During the stirring, add 20mg of the crosslinking agent pentaerythritol triacrylate and 100mg of the initiator ammonium persulfate in sequence, and place the four-necked flask under nitrogen protection at a constant temperature of 75 In a water bath at ℃, react at a constant temperature for 2 hours and continue to stir to obtain acrylic acid-acrylamide-guar gum copolymer; after drying the cop...

Example Embodiment

[0026] Example 2:

[0027] This embodiment is based on the intelligent composite inhibitor of coal spontaneous combustion with dual redox blocking, in which the specific preparation process of the ferrocene grafted acrylic acid-acrylamide-guar gum copolymer is the same as in Example 1, which is omitted. Take 1g of the obtained ferrocene grafted acrylic acid-acrylamide-guar gum copolymer powder and dissolve it in water, add 2g of N-phenyl-N'-cyclohexyl p-phenylenediamine ketone amine antioxidant and 0.15g fatty alcohol Polyoxyethylene ether penetrant, and fully stirred for 30 minutes, after mixing uniformly, dry at 40°C for 5 hours, and grind to obtain solid powder of coal spontaneous combustion intelligent composite inhibitor with particle diameter below 0.1mm.

Example Embodiment

[0028] Example 3:

[0029] In this embodiment, the intelligent composite inhibitor of coal spontaneous combustion based on the redox dual blocking function, in which the specific preparation process of the ferrocene grafted acrylic acid-acrylamide-guar gum copolymer is the same as that in Example 1, which is omitted. Take 1g of the obtained ferrocene grafted acrylic acid-acrylamide-guar gum copolymer powder and dissolve it in water, add 5g N-phenyl-N'-cyclohexyl p-phenylenediamine ketone amine antioxidant and 0.33g fatty alcohol Polyoxyethylene ether penetrant, and fully stirred for 30 minutes, after mixing uniformly, dry at 40°C for 5 hours, and grind to obtain solid powder of coal spontaneous combustion intelligent composite inhibitor with particle diameter below 0.1mm.

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Abstract

The invention discloses an oxidation reduction double blocking-based coal spontaneous combustion intelligent compound retardant. The retardant is prepared by compounding high molecular copolymer, aldehyde-amine and a penetrating agent in an optimally screened specific proportion, wherein the high molecular copolymer is prepared by the steps of hydrophobically modifying acrylic acid-acrylamide-guargum copolymer which is obtained by a solution polymerization method to prepare ferrocene butyryl chloride grafting modified acrylic acid-acrylamide-guar gum copolymer. The coal spontaneous combustionintelligent compound retardant belongs to the technical field of coal mine fire prevention retarding materials, the high-molecular copolymer frame has high water absorption and strong adhesive property, has the oxidation reduction double intelligent adjusting characteristic of grafted functional group ferrocene, can be used for eliminating carbon radical and hydroxyl radical in the coal spontaneous combusting process based on the oxidation reduction characteristic; and the penetrating agent can penetrate into the inside of float coal, carbon radical which does not react at large structure canbe eliminated, and constant efficient prevention and control of a coal spontaneous combustion zone can be realized.

Description

technical field [0001] The invention belongs to the technical field of coal mine fire prevention and chemical resistance materials, and specifically refers to a coal spontaneous combustion intelligent composite chemical resistance agent based on redox double blocking function and a preparation method thereof. Background technique [0002] Coal spontaneous combustion is one of the important safety hazards in the safe mining of coal mines and the storage and transportation of coal resources. Coal spontaneous combustion can produce a large number of toxic and harmful products, and develop into coal combustion, and will cause gas explosion, causing heavy loss of life and property. Coal spontaneous combustion retardant is one of the main means of prevention and control of coal spontaneous combustion at present, including calcium chloride, magnesium chloride and other halogen salts, ammonium salts and gel physical retardants mainly based on physical inhibition, and coal Chemical ...

Claims

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Application Information

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IPC IPC(8): C08L51/06C08L71/02C08F285/00C08F232/06C08F251/00C08F220/06C08F220/56C08F4/40E21F5/06
CPCC08F4/40C08F251/00C08F285/00C08L51/06C08L2201/06C08L2201/08E21F5/06C08F232/06C08F220/06C08F220/56C08L71/02
Inventor 辛海会马李洋戚绪尧王德明窦国兰
Owner CHINA UNIV OF MINING & TECH
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