Author: Benjamin A. WilhitePublisher:
ISBN:
Category :
Languages : en
Pages : 280
Book Description
Pulsing-flow Regime in Trickle-bed Reactors
Author: Benjamin A. WilhiteTrickle Bed Reactors
Author: Vivek V. RanadePublisher: Elsevier
ISBN: 0080931448
Category : Technology & Engineering
Languages : en
Pages : 285
Book Description
This book provides a hybrid methodology for engineering of trickle bed reactors by integrating conventional reaction engineering models with state-of-the-art computational flow models. The content may be used in several ways and at various stages in the engineering process: it may be used as a basic resource for making appropriate reactor engineering decisions in practice; as study material for a course on reactor design, operation, or optimization of trickle bed reactors; or in solving practical reactor engineering problems. The authors assume some background knowledge of reactor engineering and numerical techniques. - Facilitates development of high fidelity models for industrial applications - Facilitates selection and application of appropriate models - Guides development and application of computational models to trickle beds
Investigation of Local Velocities and Phase Holdups, and Flow Regimes and Maldistribution Identification in a Trickle Bed Reactor
Author: Mohd Fitri Bin Abdul RahmanPublisher:
ISBN:
Category : Chemical reactors
Languages : en
Pages : 130
Book Description
"Trickle bed reactors are packed beds of catalyst on which gas and liquid reactants flow concurrently downward. In this work, the experimental work was carried out in 0.14 m diameter Plexiglas column using air-water system flowing over a packed bed of 3 mm glass bead particles. The local liquid and gas velocities, phase saturation and their time series have been investigated for the first time by developing, validating, and implementing a new two-tip optical fiber probe technique. It was found the radially and axially the liquid and gas velocities and their saturation vary and they also vary with times. In various locations, due to non-uniform distribution of the flowing phases, there are windows of time where the gas phase does not pass through that location where the optical fiber probe was put at. The non-invasive gamma-ray densitometry (GRD) technique has been implemented for the first time in trickle bed reactor as in online monitoring technique to identify flow regime, gross maldistribution and liquid distribution. The GRD technique was able to identify trickle and pulse flow regime and their transition. The findings have been consistent with what have been reported in the literature. The measurement of these techniques was conducted at various axial and radial positions with the superficial liquid velocity varies in the range 0.004 - 0.016 m/s and the superficial gas velocity varies in the range of 0.03-0.27 m/s covering trickling and pulsing flow regime. The results obtained confirm that these techniques can be used with fidelity for measurements and the studies mentioned above and can be employed in various sizes of reactor operated at industrial conditions including harsh conditions of corrosion materials, high pressure, and high temperatures"--Abstract, page iv.
The Hydrodynamics of Pulsing Flow in a Cocurrent Downflow Trickle Bed Reactor
Author: David DimensteinPublisher:
ISBN:
Category : Pulsed reactors
Languages : en
Pages : 220
Book Description
Pulsing Flow in Trickle Bed Columns
Author: Jan Rudolf BlokLiquid-Induced Pulsing Flow in Trickle-Bed Reactors
Author: J. G. BoelhouwerPublisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages : 22
Book Description
The Effects of Pulsing Flow on Liquid Transport and Catalytic Reactions in Trickle Bed Reactors
Author: Steven Wade GaskeyPublisher:
ISBN:
Category : Chemical reactors
Languages : en
Pages : 355
Book Description
Nature and Characteristics of Pulsing Flow in Trickle-Bed Reactors
Author: Jaco G. BoelhouwerPublisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages :
Book Description
Hydrodynamics of Foaming Trickle Bed Reactors
Author: Sodhi VijayPublisher: LAP Lambert Academic Publishing
ISBN: 9783659507458
Category :
Languages : en
Pages : 88
Book Description
Gas-liquid-solid (catalysts) reactive systems encountered in trickle bed reactors are common in chemical engineering related cocurrent gas and liquid downflow systems. Among these processes relying on trickle beds, hydrodynamics of foaming systems are less prominently explored subject despite the formation of foaming is very often in the petroleum industries. This study's aim was to demonstrate experimentally the effects of liquid and gas flow velocities, and liquid surface tension for key phenomenon like regime transition change, two-phase pressure drop, dynamic liquid hold-up and liquid axial dispersion. More than 240 experimental points for the trickle flow (GCF) and foaming pulsing flow (PF/FPF) regime were obtained for present study, revealed significant evaluations for sustainable process design especially for industrial applications.
Three-phase Catalytic Reactors
Author: P. A. RamachandranPublisher: Gordon & Breach Publishing Group
ISBN:
Category : Science
Languages : en
Pages : 448
Book Description