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Compound chemical coal dust suppressant and preparation method thereof

A compound type, dust suppressant technology, applied in the field of environmental pollution control, can solve unseen problems, achieve the effects of flexible use, suppression of coal dust flying, and prevention of dust flying

Active Publication Date: 2015-04-22
SHAANXI COAL & CHEM TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Compound chemical coal dust suppressant and preparation method thereof
  • Compound chemical coal dust suppressant and preparation method thereof
  • Compound chemical coal dust suppressant and preparation method thereof

Examples

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preparation example Construction

[0030] Prepare the preparation method of compound type coal dust chemical dust suppressant of the present invention, comprise the steps:

[0031] At first prepare aqueous acrylic ester emulsion, comprise the following steps:

[0032] 30-45 parts by mass of acrylic acid, 5-15 parts of butyl acrylate, 5-15 parts of vinyl acetate, and 2-10 parts of styrene are mixed in proportion to form a mixed solution for later use. Add 100 parts by mass of water and 2 to 5 parts of emulsifier into a reaction kettle equipped with a stirrer, a thermometer, a reflux condenser and a feeding device, stir and heat in a water bath. When the temperature rises to 65-80°C, add 1-5 parts of the initiator, and at the same time, drop the above-mentioned mixed solution from the dropping funnel, control the dropping speed, and complete the dropping within 2-3 hours. Keep warm for 1 hour, then add 1 to 5 parts of cross-linking agent, stir for 1 hour, then cool down and discharge. The appearance of the prod...

Embodiment 1

[0039] 30 parts by mass of acrylic acid, 5 parts of butyl acrylate, 15 parts of vinyl acetate and 2 parts of styrene are mixed in proportion to form a mixed solution for later use. Add 100 parts of water, 2 parts of the mixture of emulsifier sodium dodecylbenzenesulfonate and OP-10 in a ratio of 1:1 to the reaction kettle equipped with a stirrer, a thermometer, a reflux condenser and a feeding device, stir and use Water bath. When the temperature rises to 65°C, add 1 part of the initiator ammonium persulfate and potassium persulfate, and at the same time, add the above mixed solution dropwise from the dropping funnel, control the dropping rate, and complete the dropwise addition within 2 hours. Insulate for 1 hour, then add 1 part of cross-linking agent N,N-methylenebisacrylamide, stir for 1 hour, then cool down and discharge to obtain water-based acrylate emulsion.

[0040] Then, utilize above-mentioned product aqueous acrylate emulsion to prepare composite type coal dust du...

Embodiment 2

[0043] 45 parts by mass of acrylic acid, 10 parts of butyl acrylate, 5 parts of vinyl acetate, and 6 parts of styrene were mixed in proportion to form a mixed solution for later use. Add 100 parts of water and 3 parts of emulsifier sodium lauryl sulfate into a reaction kettle equipped with a stirrer, a thermometer, a reflux condenser and a feeding device, stir and heat with a water bath. When the temperature rises to 80°C, add 3 parts of 30% hydrogen peroxide as the initiator, and at the same time, drop the above mixed solution from the dropping funnel, control the dropping speed, and complete the dropping within 3 hours. Keep warm for 1 hour, then add 1 part of cross-linking agent ethylene glycol dimethacrylate and divinylbenzene, stir for 1 hour, cool down and discharge to obtain water-based acrylate emulsion.

[0044] Then, utilize above-mentioned product aqueous acrylate emulsion to prepare composite type coal dust dust suppressant:

[0045] Add 100 parts by mass of water...

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Abstract

The invention discloses a compound chemical coal dust suppressant and a preparation method thereof. The preparation method comprises the steps of uniformly stirring 20-40 parts of water-based acrylate emulsion, 2-10 parts of activating agents, 2-10 parts of emulsifying agents, 2-5 parts of aids and 100 parts of water uniformly for 0.5 hour at 40-60 DEG C and then cooling the mixture to the room temperature. The compound chemical coal dust suppressant has the functions of wetting, bonding and coagulating. When used, the dust suppressant is diluted with water according to a ratio of 1:(10-1000), then the dust suppressant water solution is injected into a sprayer, and coal pile dust flying can be effectively suppressed for a long time by uniformly spraying the dust suppressant water solution onto the coal pile surface according to the amount of 1.0-2L / m<2>.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and relates to a composite coal dust chemical dust suppressant, which is mainly used for suppressing the dust generated during mining, stacking and transportation of coal mines. Background technique [0002] Coal mines produce a large amount of coal dust under the joint action of mechanical force and wind force during mining, stockpiling, transportation, processing and other links, which poses a serious hazard to the atmospheric environment and production safety. Every year, coal dust loss accounts for 1% of the total coal output, causing huge economic losses. At the same time, the vast majority of coal dust is inhalable particulate matter, and it is difficult to effectively control it by traditional methods such as watering and tarpaulin covering. [0003] The composition and structure of coal dust are complex and not composed of a single substance. According to relevan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/22
Inventor 胡国和郑化安付东升李欣李应平
Owner SHAANXI COAL & CHEM TECH INST
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