Numerical investigation on ice slurry flow in horizontal elbow pipes

Ma, Kebo; Liu, Zhiqiang; Tang, Yifang; Liu, Xiangqi; Yu, Yang; Yang, Sheng

doi:10.1016/j.tsep.2021.101083

Cited by 8 publications

(2 citation statements)

References 39 publications

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“…The feasibility and implementation of turbulence models, such as the k –ϵ and k –ω models, have been extensively studied and reported in the context of slurry systems. However, recent research suggests that the standard k –ϵ turbulence model is suitable to describe slurry systems. , In this study, the k –ϵ turbulence model, obtained through Reynolds-averaged Navier–Stokes (RANS) equations, is employed to accurately capture the turbulence in the slurry mixtures. , The equations and constants for the k –ϵ model can be found in Table from eqs 6a–6f. − …”

Section: Materials and Methodologymentioning

confidence: 99%

Effects of Coal Particles on Microbubble-Enhanced Bitumen Separation in the Concentrated Slurry Flow of Oil Sands Tailings

Huo,

Golchin,

Zhou

et al. 2024

Ind. Eng. Chem. Res.

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Our study investigates the segregation of bitumen residues within the transport pipeline before disposal in the presence of coal particles in carriers and microbubbles. Coal particles decreased the bitumen recovery by 17% without the injection of microbubbles. In addition, the improvement in bitumen recovery efficiency by 6 mL of H 2 O 2 is negligible due to a small number of bubbles formed from H 2 O 2 decomposition in the flow. However, tremendous enhancement in the recovery efficiency was achieved with the simultaneous addition of coal particles and H 2 O 2 . Further increase in recovery was noted as a larger volume of H 2 O 2 was injected to form more microbubbles. Computational fluid dynamics (CFD) simulations were conducted to help understand the effects of coal particles and microbubbles. The simulation results illustrated that the introduction of coal particles caused bitumen contents to accumulate in the middle of the pipe. Furthermore, an increased volume fraction of microbubbles contributed to a higher distribution of bitumen at the top of the pipe. This study not only offers valuable insights for developing an innovative strategy to enhance the efficiency of bitumen separation in hydrotransport processes but also contributes to a deeper understanding of the intricate interactions among bubbles, bitumen, and coal particles in a slurry flow.

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Section: Materials and Methodologymentioning

confidence: 99%

Effects of Coal Particles on Microbubble-Enhanced Bitumen Separation in the Concentrated Slurry Flow of Oil Sands Tailings

Huo,

Golchin,

Zhou

et al. 2024

Ind. Eng. Chem. Res.

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“…Recently, Ma et al 18 also studied a similar system using the CFD−PBM coupled model to investigate ice slurry flow characteristics. According to their findings, elbow angles greatly affect the pressure, velocity field, ice particle size, and distribution of ice slurry.…”

Section: Introductionmentioning

confidence: 99%

Numerical Insights from a Population Balance Model into the Distribution of Bitumen Residues in Industrial Horizontal Pipes During the Hydrotransport of Oil Sands Tailings

Sontti,

Zhang

2023

Ind. Eng. Chem. Res.

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Pipeline transportation is a vital method for conveying crushed oil sand ores and tailings in the oil sands industry. This study focuses on enhancing economic benefits by exploring the separation of valuable bitumen residues from coarse sand tailings within hydrotransport pipelines. Employing threedimensional transient Eulerian−Eulerian computational fluid dynamics (CFD) simulations coupled with a population balance model (PBM), we examine the aggregation and breakage of bitumen droplets under various flow conditions. The accuracy of the CFD−PBM model is validated against field measurements of velocity profiles and pressure drops. Our findings reveal that higher slurry velocities lead to intensified particle−bitumen interactions, resulting in reduced aggregated bitumen droplet sizes at the pipeline's core. Additionally, variations in bitumen fraction cause shifts in the distribution of coarse particles along the pipe's vertical axis with increased aggregation and larger droplets in the upper region. Notably, we demonstrate that smaller bubbles promote a more uniform distribution of bitumen compared with larger bubbles. These insights provide valuable knowledge for optimizing bitumen recovery processes and facilitate the integration of pipeline hydrotransport dynamics with downstream separation and extraction units.

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Review on high ice packing factor (IPF) ice slurry: Fabrication, characterization, flow characteristics and applications

Zhou,

Zhang,

et al. 2024

Journal of Energy Storage

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Numerical investigation on ice slurry flow in horizontal elbow pipes

Cited by 8 publications

References 39 publications

Effects of Coal Particles on Microbubble-Enhanced Bitumen Separation in the Concentrated Slurry Flow of Oil Sands Tailings

Effects of Coal Particles on Microbubble-Enhanced Bitumen Separation in the Concentrated Slurry Flow of Oil Sands Tailings

Numerical Insights from a Population Balance Model into the Distribution of Bitumen Residues in Industrial Horizontal Pipes During the Hydrotransport of Oil Sands Tailings

Review on high ice packing factor (IPF) ice slurry: Fabrication, characterization, flow characteristics and applications

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