Jamal M. Ali, Abbas J. Sultan, Zahraa W. Hasan, Nabil Majd Alawi
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引用次数: 0
Abstract
This research is mainly concerned on studying the effects of heating surface area of immersing heater and particles size of bed packing on values of heat transfer coefficient (HTCs) under different air flow rates. Experiments were conducted in a gas-solid fluidized bed to study the steady-state heat transfer between gas and solid, along with the surface of the bed at various velocities, ranging from static bed to fluidized bed conditions (0.024– 0.387 m/s). The bed column was 172 mm in diameter and 1000 mm in height, attached with a horizontal heating tube of different diameters (19.5, 25.4, and 30 mm). Three different sizes of sand particle were employed (i.e. 200, 300 and 400 µm). HTCs are shown to rise with fluidizing air velocity while exhibiting a reverse association with particle size. The influence of heating tube diameter on HTC has been examined with remarkable fluctuations revealing the bed’s hydrodynamic characteristics.
期刊介绍:
Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas.
Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.