Optimization and implementation of a foam system to suppress dust in coal mine excavation face

Wang, Qingguo; Wang, Biao; Wang, Hetang; Han, Fangwei; Zhu, Xiaolong; Tang, Yan; Si, Weibin

doi:10.1016/j.psep.2015.05.009

Cited by 61 publications

(17 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Entrainment of air into the liquid to form bubbles increases the liquid surface area and thus provides better distribution of the liquid across the treatment area. The increased efficiency in distribution of the liquid can reduce water requirements in wet systems by as much as 50% (Wang et al, 2011, Wang et al 2015).…”

Section: Application Methodsmentioning

confidence: 99%

Water Application for Dust Control in the Central Plateau: Impacts, Alternatives, and Work Strategies

Yonkofski¹,

Appriou²,

Song³

et al. 2018

View full text Add to dashboard Cite

Section: Application Methodsmentioning

confidence: 99%

Water Application for Dust Control in the Central Plateau: Impacts, Alternatives, and Work Strategies

Yonkofski¹,

Appriou²,

Song³

et al. 2018

View full text Add to dashboard Cite

“…This foam generator with air-suction was shown to achieve positive dust suppression effect in field applications [23]. The suction performance of foaming agent was also investigated at length [24].…”

Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

“…With adoption of the parameters mentioned above, this foam generator with air self-suction can have good foam-production ability and high dustsuppression efficiency in field applications and have been utilized in several coal mines in the Huaibei mining area such as Zhuxianzhuang Coal Mine [22,23].…”

Section: Field Applicationmentioning

confidence: 99%

Numerical Simulation of Air Entrainment Performance of a Foam Generator Used for Dust Control in Coal Mines

Wang

Tang

2019

Mathematical Problems in Engineering

Self Cite

View full text Add to dashboard Cite

Mine dust is one of the most serious environmental hazards in the coal mining process. This paper introduces a numerical simulation of a novel foam generator used for dust control in coal mines. The amount of foam generated by this device significantly depends on the amount of air entrainment. Therefore, a computational fluid dynamics (CFD) method was used to study three influencing factors, namely, throat-nozzle distance, mixing throat length, and the contraction angle of the suction chamber. The predicted values by the CFD simulation proved to be in good agreement with the experimental data. The results revealed that the air entrainment reached its maximum when the ratio of throat-nozzle distance to mixing throat length was 2/3. The optimum values of the throat ratio (its length to diameter) and the contraction angle of the suction chamber were obtained at 20 and 5 ∘ , respectively. This research provides essential guidance in the geometric parameter design of the self-suction type foam generator, which has the advantage of negating the need for compressed-air pipelines and having high reliability, compared to traditional foam generators.

show abstract

“…Therefore, scholars in the international community have started to develop chemical-based dust suppression methods, which have proven to be promising in many dust suppression applications [18][19][20][21][22][23][24]. Overall, the chemical dust suppressant is highly favored considering its dust suppression effect, economic viability and environmental-friendliness, and therefore has a vast potential for future development [25][26][27][28][29][30]. The chemical dust suppressant functions effectively on open dust sources, and therefore this technology has been widely applied to those enterprises with a major generation of coal dust, such as railroad transportation departments, dumping sites and thermal power plants [31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Development of Environmental Friendly Dust Suppressant Based on the Modification of Soybean Protein Isolate

Nie

Zhang

et al. 2019

Processes

View full text Add to dashboard Cite

Aiming to further improve the dust suppression performance of the dust suppressant, the present study independently develops a new type of biodegradable environmentally-friendly dust suppressant. Specifically, the naturally occurring biodegradable soybean protein isolate (SPI) is selected as the main material, which is subject to an anionic surfactant, i.e., sodium dodecyl sulfonate (SDS) for modification with the presence of additives including carboxymethylcellulose sodium and methanesiliconic acid sodium. As a result, the SDS-SPI cementing dust suppressant is produced. The present study experimentally tests solutions with eight different dust suppressant concentrations under the same experimental condition, so as to evaluate their dust suppression performances. Key metrics considered include water retention capability, cementing power and dust suppression efficiency. The optimal concentration of dust suppressant solution is determined by collectively comparing these metrics. The experiments indicate that the optimal dust suppressant concentration is 3%, at which level the newly developed environmentally-friendly dust suppressant solution exhibits a decent dust suppression characteristic, with the water retention power reaching its peak level, and the corresponding viscosity being 12.96 mPa·s. This performance can generally meet the requirements imposed by coal mines. The peak efficiency of dust suppression can reach 92.13%. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to analyze the dust suppression mechanism of the developed dust suppressant. It was observed that a dense hardened shell formed on the surface of the pulverized coal particles sprayed with the dust suppressant. There is strong cementation between coal dust particles, and the cementation effect is better. This can effectively inhibit the re-entrainment of coal dust and reduce environmental pollution.

show abstract

Optimization and implementation of a foam system to suppress dust in coal mine excavation face

Cited by 61 publications

References 4 publications

Water Application for Dust Control in the Central Plateau: Impacts, Alternatives, and Work Strategies

Water Application for Dust Control in the Central Plateau: Impacts, Alternatives, and Work Strategies

Numerical Simulation of Air Entrainment Performance of a Foam Generator Used for Dust Control in Coal Mines

Development of Environmental Friendly Dust Suppressant Based on the Modification of Soybean Protein Isolate

Contact Info

Product

Resources

About