Hydrodynamics of Conical Spouted Beds With High Density Particles

Date

2008-05-01

Author

Sari, Salih
Polat, Aylin
Zaglanmis, Dogukan
Külah, Görkem
Köksal, Murat

Metadata

Show full item record

Item Usage Stats

227
views

0
downloads

An extensive experimental investigation of conical spouted beds with high density particles were carried out by measuring bed pressure drop, particle velocity and solids hold-up in a 15 cm ID conical spouted bed at three different cone angles (30°, 45°, 60°) with Yttria-stabilized zirconia (YSZ) particles (ρp = 6050 kg/m3 ). The results show that the minimum external spouting velocity increases with cone angle, particle diameter and static bed height. The bed is characterized by two regions: upward moving particles with high slip in the spout and slowly downward moving particles at loosely packed conditions in the annulus.

URI

https://hdl.handle.net/11511/73942
https://dc.engconfintl.org/cgi/viewcontent.cgi?article=1043&context=cfb10

Conference Name

Hydrodynamics of Conical Spouted Beds With High Density Particles (2011)

Collections

Department of Chemical Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Surface-to-bed heat transfer for high-density particles in conical spouted and spout-fluid beds Yaman, Onur; Külah, Görkem; KÖKSAL, MURAT (Elsevier BV, 2019-02-01) Bed-to-surface heat transfer experiments from a vertically submerged cylindrical surface were conducted in laboratory-scale (D-c = 25 cm) conical spouted and spout-fluid beds at two different conical angles (31 degrees and 66 degrees) in the high particle density range (2500 kg/m(3) <= sigma(p) <= 6000 kg/m(3)). The effects of the bed design parameters (conical angle and inlet diameter of spouting gas entrance) and operating conditions (static bed height, particle size, density, and spouting and fluidizatio...
Multiscale analysis of solids flux signals measured in a high density circulating fluidized bed using wavelet transformation Külah, Görkem (2005-05-13) In order characterize the annulus thickness in a high density circulating fluidized bed, local instantaneous solids fluxes are measured using a three-fibre optical probe in a 0.20 m diameter, 5.9 m tall CFB riser operating at superficial gas velocity of 6 m/s and solids circulation flux of 330 kg/m(2)s, with FCC particles of mean diameter 70 mu m and density 1700 kg/m(3) as the bed material. Measurements obtained at three axial levels (z = 0.76, 1.27, 3.10 m) and six radial locations (r/R = 0.94, 0.88, 0.75...
Direct measurement of molecular stiffness and damping in confined water layers JEFFERY, STEVE; HOFFMANN, PETER M; PETHİCA, JOHN B; RAMANUJAN, CHANDRA; ÖZER, HAKAN ÖZGÜR; Oral, Ahmet (American Physical Society (APS), 2004-08-01) We present direct and linear measurements of the normal stiffness and damping of a confined, few molecule thick water layer. The measurements were obtained by use of a small amplitude (0.36 Angstrom), off-resonance atomic force microscopy technique. We measured stiffness and damping oscillations revealing up to seven molecular layers separated by 2.526+/-0.482 Angstrom. Relaxation times could also be calculated and were found to indicate a significant slow-down of the dynamics of the system as the confining...
Molecular-dynamics simulations of silicene nanoribbons under strain Ince, Alper; Erkoç, Şakir (2012-01-01) Structural properties of silicene nanoribbons (SiNRs) of varying width have been investigated under 5% and 10% uniaxial strain via classical Molecular-Dynamics simulations at 1 and 300?K temperatures by the aid of atomistic many-body potential energy functions (PEFs). It has been found that under strain, SiNRs show such material properties: they are very ductile, with considerable toughness and a very long plastic range before fragmentation.
Numerical investigation of unsteady natural convection from a heated cylinder in a square enclosure Bozkaya, Canan (null; 2015-07-06) A numerical study of two dimensional, unsteady, incompressible natural convection flow and heat transfer is performed in a square enclosure involving a heated circular cylinder. The natural convection is driven by a temperature difference between the cold outer square and hot inner circular cylinders. The temperature of the inner cylinder varies sinusoidally with time about a fixed mean temperature while the outer enclosure is kept at a lower constant temperature. The problem under consideration, which is g...

Citation Formats

S. Sari, A. Polat, D. Zaglanmis, G. Külah, and M. Köksal, “Hydrodynamics of Conical Spouted Beds With High Density Particles,” presented at the Hydrodynamics of Conical Spouted Beds With High Density Particles (2011), 2008, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/73942.