Multi-factor numerical simulation study on spray dust suppression device in coal mining process

Xu, Chen; Nie, Wen; Liu, Zhiqiang; Peng, Huitian; Yang, Shibo; Liu, Qiang

doi:10.1016/j.energy.2019.05.201

Cited by 202 publications

(35 citation statements)

References 81 publications

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“…From the late Carboniferous epoch to the present, the Chepaizi area has experienced three major periods of tectonic evolution: the late Carboniferous to Jurassic with a strong uplift stage, the Cretaceous to Paleogene with a slow settling phase, the Neogene to Quaternary with rapid subsidence, and today with a wide flat slope (Cai et al, 2019;Hu et al, 2016;Xu et al, 2019). For stratigraphy (Figure 2), the basement consists of Carboniferous volcanic rocks with a buried depth of 150-2300 m. Lacking of the Permian, Triassic, and Jurassic deposits is common in the Chepaizi area.…”

Section: Geological Settingmentioning

confidence: 99%

Geochemical characterization and possible hydrocarbon contribution of the Carboniferous interval natively developed in the Chepaizi Uplift of Junggar Basin, northwestern China

Mao

Chang

et al. 2019

Energy Exploration & Exploitation

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Previous studies on Chepaizi Uplift mainly focused on its reservoirs, and the potential source rocks natively occurred was ignored. During the exploration process, dark mudstones and tuffaceous mudstones were found in the Carboniferous interval. These possible source rocks have caused great concern about whether they have hydrocarbon generation potential and can contribute to the reservoirs of the Chepaizi Uplift. In this paper, the potential source rocks are not only evaluated by the organic richness, type, maturity, and depositional environment, but also divided into different kinetics groups. The Carboniferous mudstones dominated by Type III kerogen were evolved into the stage of mature. Biomarkers indicate that the source rocks were deposited in a marine environment under weakly reducing conditions and received mixed aquatic and terrigenous organic matter, with the latter being predominant. The effective source rocks are characterized by the total organic carbon values >0.5 wt.% and the buried depth >1500 m.

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Section: Geological Settingmentioning

confidence: 99%

Geochemical characterization and possible hydrocarbon contribution of the Carboniferous interval natively developed in the Chepaizi Uplift of Junggar Basin, northwestern China

Mao

Chang

et al. 2019

Energy Exploration & Exploitation

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“…From Table 4, most of the compound solutions have stronger wetting effect and higher moisture absorption than the monomer solution (Zhang et al, 2019;Xu et al, 2019b). Considering the growth rate of moisture absorption, the four compounding schemes, i.e., Scheme 1 (AES + SDBS), Scheme 2 (AES + AEO-9), Scheme 10 (AEO-9 + 20), and Scheme 13 (AEO-9 + CTAB), were more effective.…”

Section: Compounding Experiments 41 Binary Compounding Of Surfactantsmentioning

confidence: 99%

Preparation and Performance Analysis of a Spray Dust Suppressant for Coking Coal Dust

Jiang

Wang

Pei

et al. 2020

Preprint

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Coking coal dust has strong hydrophobicity, and it is difficult to combine with droplets in the air and settle. In order to improve the ability of droplets to collect coking coal dusts, a spray dust suppressant for coking coal dusts was studied. Based on monomer optimization and compounding experiments, two types of surfactant monomers, fatty alcohol ether sodium sulfate (AES) and sodium dodecyl benzene sulfonate (SDBS), were selected as the surfactant components for the dust suppressant. Meanwhile, the surfactant monomers were combined with four inorganic salts and the reverse osmosis moisture absorption of each solution was measured. By combining the results of both reverse osmosis moisture absorption and the water retention experiments, CaCl 2 was selected as the inorganic salt auxiliary component for the dust suppressant. Finally, the best concentration combination of the three components were obtained using orthogonal experiments, i.e., AES (0.05%), SDBS (0.03%), and CaCl 2 (0.6%). The dust suppressant solution constituted by this scheme had a high moisture absorption and great performance.

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“…In particular, the number of pneumoconiosis cases in coal mining industry accounts for 40% of the total number of the reported occupational cases. erefore, it is extremely urgent to adopt high-efficiency dust-suppression and dust-control measures to reduce the dust concentration in coal production sites [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effects of Metamorphic Degree of Coal on Coal Dust Wettability and Dust‐Suppression Efficiency via Spraying

Wang

Han

Liu

et al. 2020

Advances in Materials Science and Engineering

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Currently, spraying is a main means for dust prevention and control in underground coal mines. The dust-suppression efficiency via spraying is highly correlated with the wettability of coal dusts. There are many factors affecting the wettability of coal dust, among which coal’s metamorphic degree has great influence. In order to gain in-depth knowledge of the effects of coal metamorphic degree on coal dust wettability and the dust-suppression efficiency via spraying, 6 coal dust samples with different metamorphic degrees were collected and used in the study. In the experiments, the microproperties, wetting performance, and dust-suppression efficiency via spraying were measured. According to the experimental results of coal’s microproperties, with the improvement of metamorphic degree, the content of hydrophilic oxygen-containing functional groups on the surface, the surface roughness, the specific surface area, and the interpore diameter all decreased. In addition, as coal’s metamorphic degree was enhanced from lignite to meager-lean coal, the wettability of the coal dust dropped. On the other hand, as the metamorphic degree of coal quality continued to be improved to anthracite, the wettability of the coal dust increased instead. The measured results revealed that the dust-suppression efficiency via spraying was highly correlated with the wettability of coal dust. The coal dust with better wettability exhibited higher dust-suppression efficiency via spraying. With the increase of water-supply pressure, the effect of coal dust wettability on the dust-suppression efficiency via spraying was weakened, and the difference of dust-suppression efficiency among different coal dust samples was narrowed.

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Multi-factor numerical simulation study on spray dust suppression device in coal mining process

Cited by 202 publications

References 81 publications

Geochemical characterization and possible hydrocarbon contribution of the Carboniferous interval natively developed in the Chepaizi Uplift of Junggar Basin, northwestern China

Geochemical characterization and possible hydrocarbon contribution of the Carboniferous interval natively developed in the Chepaizi Uplift of Junggar Basin, northwestern China

Preparation and Performance Analysis of a Spray Dust Suppressant for Coking Coal Dust

Effects of Metamorphic Degree of Coal on Coal Dust Wettability and Dust‐Suppression Efficiency via Spraying

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