Visualization of flow structures inside a conical spouted bed by electrical capacitance volume tomography

Park, Hoon Chae; Choi, Hang Seok

doi:10.1016/j.partic.2018.01.002

Cited by 13 publications

(6 citation statements)

References 25 publications

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“…Pressure drop, RMS of pressure fluctuation, and distribution of solid volume fraction in a spouted bed with respect to inlet gas velocity .…”

Section: Resultssupporting

confidence: 68%

“…In this study, the pressure drop was measured to identify the hydrodynamic characteristics, root mean square (RMS) of pressure fluctuation, and distribution of the solid volume fraction in the spouted bed with respect to the inlet gas velocity. A full description of the experimental method can be found in .…”

Section: Resultsmentioning

confidence: 99%

“…The thermal decomposition of raw Figure 3. Pressure drop, RMS of pressure fluctuation, and distribution of solid volume fraction in a spouted bed with respect to inlet gas velocity [25]. materials presents two peaks as seen in the DTG curve.…”

Section: Influence Of Reaction Temperaturementioning

confidence: 92%

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Influence of Operating Conditions for Fast Pyrolysis and Pyrolysis Oil Production in a Conical Spouted‐Bed Reactor

et al. 2019

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Fast pyrolysis experiments of larch sawdust were conducted in a conical spouted‐bed reactor to study the influences of reaction temperature, inlet gas velocity, feeding rate, and particle size on the product yield and pyrolysis oil quality. For the first time, the optimal conditions were determined for various pyrolysis operations of such reactor to increase the yield and quality of pyrolysis oil. The results demonstrate that the biomass particle size, reaction temperature, biomass feeding rate, and inlet gas velocity all affected the quality and yield of the pyrolysis oil, in this order.

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“…Pressure drop, RMS of pressure fluctuation, and distribution of solid volume fraction in a spouted bed with respect to inlet gas velocity .…”

Section: Resultssupporting

confidence: 68%

Section: Resultsmentioning

confidence: 99%

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Influence of Operating Conditions for Fast Pyrolysis and Pyrolysis Oil Production in a Conical Spouted‐Bed Reactor

et al. 2019

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“…Pictures of the system are shown in Figure 3. The ECVT system was used in several previous studies, such as [11,12,13].…”

Section: Equipment For Flow Visualizationmentioning

confidence: 99%

“…Pictures of the system are shown in Figure 3. The ECVT system was used in several previous studies, such as [11][12][13]. The ECVT system was deployed downstream of the pressure drop measurement section to monitor the in situ volumetric phase distribution inside the pipe.…”

Section: Equipment For Flow Visualizationmentioning

confidence: 99%

Experimental Study of Oil–Water Flow Downstream of a Restriction in a Horizontal Pipe

Zhou,

Karatayev,

Fan

et al. 2024

Fluids

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This work presents an experimental study on oil–water flow downstream of a restriction. The flow pattern, volumetric phase distribution, and their impacts on pressure drop are discussed. We employed two techniques to visualize the oil–water flow patterns, a high-speed camera and an Electrical Capacitance Volume Tomography (ECVT) system. The ECVT system is a non-intrusive device that measures the volumetric phase distribution at the pipe cross-section with time, which plays a critical role in determining the continuous phase in the oil–water flow, and therefore the oil–water flow pattern. In this study, we delved into the oil–water flow pattern and volumetric phase distribution for different valve openings, flow rates, and water cuts, and how they impact the pressure drop. The experimental results have demonstrated a strong relationship between the oil–water flow pattern and the pressure gradient, while the oil–water flow pattern is significantly influenced by the flowing conditions and the valve openings. The impacts of water cuts on the oil–water flow pattern are more obvious for smaller valve openings. For large valve openings, the oil and water phases tend to be more separated. This results in a moderate variation in the pressure gradient as a function of water cuts. However, it becomes more complex as the valve opening decreases. The pressure gradient generally increases with decreasing valve openings until the flow pattern becomes an oil-in-water dispersed flow. The impact of the valve on the pressure gradient is more pronounced in water-dominated flow when the water cut is above the inversion point, while it seems to be most obvious for medium water cut conditions.

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Application of electrical capacitance tomography in circulating fluidised beds – A review

Wang

Yang

2020

Applied Thermal Engineering

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Visualization of flow structures inside a conical spouted bed by electrical capacitance volume tomography

Cited by 13 publications

References 25 publications

Influence of Operating Conditions for Fast Pyrolysis and Pyrolysis Oil Production in a Conical Spouted‐Bed Reactor

Influence of Operating Conditions for Fast Pyrolysis and Pyrolysis Oil Production in a Conical Spouted‐Bed Reactor

Experimental Study of Oil–Water Flow Downstream of a Restriction in a Horizontal Pipe

Application of electrical capacitance tomography in circulating fluidised beds – A review

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