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Environment-friendly type dust capturing agent

A scavenger, environmentally friendly technology, applied in the direction of dust prevention, fire prevention, mining equipment, etc., can solve problems such as environmental pollution, achieve good biocompatibility, safe and rapid degradation, and good dust reduction effect.

Inactive Publication Date: 2014-09-03
LANZHOU XUZHAO BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The agent is based on biomass, has good biocompatibility, is safe and rapid to degrade, and effectively solves the potential environmental pollution problems caused by the direct discharge of foam-type (or soaking-type) dust suppressants currently used in mines

Method used

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  • Environment-friendly type dust capturing agent
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 10 kg of sodium polyaspartate, 6 kg of sodium laurylalanine, 6 kg of sodium cocoyl glutamate, and 1 kg of dodecyl dimethyl benzyl ammonium chloride, and add it to 73 kg of water , heated and stirred at 50°C for 1 hour to prepare 100 kg of dust capture agent. After preparation, it can be loaded into a foaming device for foaming. The dust capture agent with this ratio has a dust removal rate of 95.5% for coal dust in mines and a dust removal rate of 90.1% for respirable coal dust.

Embodiment 2

[0018] Get 7 kg of polyaspartate sodium, 3 kg of polylysine, 3 kg of sodium dodecyl dimethylene carbamate, 3 kg of sodium cocoyl glutamate, 8 kg of sodium lauroyl glutamate, Add 1 kg of octadecyl ammonium chloride to 75 kg of water, heat and stir at 50°C for 1 hour to make 100 kg of dust capture agent. After preparation, it can be loaded into a foaming device for foaming. The dust capture agent with this ratio has a dust removal rate of 95.1% for coal dust in mines and a dust reduction rate of 90.3% for respirable coal dust.

Embodiment 3

[0020] Take 4 kg of polyaspartic acid, 6 kg of polylysine, 15 kg of disodium cocoyl glutamate, 2 kg of dodecyl dimethyl ammonium chloride, add 73 kg of water, heat and stir at 50 ° C 1 hour is dubbed into 100 kg of dust capture agent. After preparation, it can be loaded into a foaming device for foaming. The dust capture agent with this proportion has a dust removal rate of 96.5% for coal dust in mines and a dust reduction rate of 90.9% for respirable coal dust.

[0021] The dust capture agent was tested on the mining face of a coal mine, and it has obvious effects of reducing all dust and respirable dust. The results are shown in Table 1:

[0022] The location from the foaming machine 5m 10m 15m Dust concentration before use 340mg / m 3 337mg / m 3 330mg / m 3 Dust concentration after use 12mg / m 3 12mg / m 3 11mg / m 3 Total dust reduction efficiency 96.5％ 96.4％ 96.7％ Respirable dust reduction efficiency 91％ 91％ 90.8％

[002...

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Abstract

The invention discloses an environment-friendly type dust capturing agent and a preparation method thereof. The capturing agent is composed of the following compositions in percent by mass: 10-20% of poly(amino acid) or poly(amino acid salt), 10-20% of an amino acid surfactant, 1-5% of an quaternary ammonium salt, and the balance water. The advantages comprise that the dust capturing agent is nontoxic in composition and completely degradable by nature microbes, and does not cause pollution to soil and underground water after being directly discharged. The agent is easy to dissolve in water, and can be directly sprayed for usage by utilizing an original water spraying system of a mine. The dust capturing agent has the dust removing rate on total coal dust up to 95% or more, and has the dust removing rate on respirable dust up to 90% or more. The agent has corrosion-resistant and sterilization effects, and is capable of improving the environment in mine tunnels. The agent has certain gathering and cladding effects on dust, enables mineral dust to form relatively large particles, and is insusceptible to cause secondary dust rising after drying is performed. The agent is capable of improving the downhole operation environment, reducing dust damage and promoting safe production.

Description

Technical field: [0001] The invention belongs to the field of environmental protection, and relates to an environment-friendly dust catcher used in mines, especially coal mine underground mining operations, and a preparation method thereof. Background technique: [0002] Coal dust is one of the important safety hazards in underground coal mining. The accumulation of high-concentration coal dust is prone to dust explosion, causing huge casualties and economic losses. At the same time, the concentration of respirable dust underground is too high, and long-term inhalation can cause lung disease, which poses a serious threat to the health of miners. my country's coal mining is dominated by underground mining. Due to the narrow working space and poor ventilation, a large amount of dust is generated during the production process, especially during excavation. Without additional dust prevention measures, the dust concentration in the fully mechanized mining face exceeds 2,500 mg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22E21F5/06
Inventor 许言和
Owner LANZHOU XUZHAO BIOTECH
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