Model to predict packing efficiency in coal water slurry: Part2 prediction and application

Li, Qiang; Liao, Changlin; Hou, Jian; Wang, Wenju; Zhang, Jiansheng

doi:10.1016/j.fuel.2022.123270

Cited by 6 publications

(1 citation statement)

References 12 publications

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“…Much research suggested that factors including particle size, dispersant, and surface chemistry could affect the solid loading and rheological property of CWS deeply. ,− Li et al , studied the influence of particle size distribution in CWS preparation, and the concept of systematic gradation proposed that with the same concentration and additive, the slurry with the lowest viscosity could be predicted by the highest packing efficiency. Previously, we found that dispersants are necessary for CWS prepared from low-quality coal to meet the requirements for industrial storage; as an essential additive in MCWS, the dispersant plays a crucial role in qualified slurry preparation .…”

Section: Introductionmentioning

confidence: 99%

Insights into the Dispersion Mechanism of Microfine Coal Particles Modified with Naphthalene Sulfonate Formaldehyde Based on EDLVO Theory

et al. 2023

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Coal water slurry (CWS) fuel prepared using microfine coal particles with a size distribution of 1–10 μm is a promising way to cleanly utilize solid resources in engines, even catering a popular application for clean coal technology. In an attempt to address the problems in coal aggregation in microfine coal water slurry (MCWS), dispersants are used to improve the dispersing status of microfine coal particles. Based on the experimental results and extended Derjaguin–Landau–Verwey–Overbeek (EDLVO) theory calculations, the role of naphthalene sulfonate formaldehyde (NSF) in MCWS performance was explored. The measurement of the slurry ability of microfine coals demonstrated that the apparent viscosity and yield stress of MCWS were decreased significantly with 1.5% NSF addition, which was consistent with the saturated adsorption value of NSF on microfine coals. Furthermore, the ζ-potential and contact angle of microfine coals were both decreased as a function of the NSF dosage, indicating that a larger electrostatic repulsion force and better wetting ability of the coal surface would be obtained in the presence of NSF. The thickness calculation results showed that the thickness is increased with NSF addition, which is attributed to that the NSF molecule extends into the surrounding solution to form a hydrophilic film. The EDLVO calculations illustrated that the total interaction was turned from an attractive force into a repulsive force in the case of NSF, noting that the better dispersion of microfine coals mainly resulted from the better hydrophilicity of the coal surface modified with NSF. The findings might provide guidance for MCWS preparation by revealing the interaction mechanism of microfine coals modified with NSF.

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Section: Introductionmentioning

confidence: 99%

Insights into the Dispersion Mechanism of Microfine Coal Particles Modified with Naphthalene Sulfonate Formaldehyde Based on EDLVO Theory

et al. 2023

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Effect of particle gradation on the properties of Mg(OH) ₂ slurry: viscosity, stability, and rheology

Tang,

Li,

et al. 2024

Journal of Dispersion Science and Technology

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Study on improving the performance of blended Semi-coke coal water slurry based on multi-peak gradation technology

Li,

Mao,

2024

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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Model to predict packing efficiency in coal water slurry: Part2 prediction and application

Cited by 6 publications

References 12 publications

Insights into the Dispersion Mechanism of Microfine Coal Particles Modified with Naphthalene Sulfonate Formaldehyde Based on EDLVO Theory

Insights into the Dispersion Mechanism of Microfine Coal Particles Modified with Naphthalene Sulfonate Formaldehyde Based on EDLVO Theory

Effect of particle gradation on the properties of Mg(OH) ₂ slurry: viscosity, stability, and rheology

Study on improving the performance of blended Semi-coke coal water slurry based on multi-peak gradation technology

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Model to predict packing efficiency in coal water slurry: Part2 prediction and application

Cited by 6 publications

References 12 publications

Insights into the Dispersion Mechanism of Microfine Coal Particles Modified with Naphthalene Sulfonate Formaldehyde Based on EDLVO Theory

Insights into the Dispersion Mechanism of Microfine Coal Particles Modified with Naphthalene Sulfonate Formaldehyde Based on EDLVO Theory

Effect of particle gradation on the properties of Mg(OH) 2 slurry: viscosity, stability, and rheology

Study on improving the performance of blended Semi-coke coal water slurry based on multi-peak gradation technology

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Effect of particle gradation on the properties of Mg(OH) ₂ slurry: viscosity, stability, and rheology