Data-based Modelling of a Slender Packed Bed Reactor PDF Download
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Author: Ana Maria Gola-Galimidi
Publisher:
ISBN:
Category :
Languages : en
Pages : 354
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Author: Ana Maria Gola-Galimidi
Publisher:
ISBN:
Category :
Languages : en
Pages : 354
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Author: John James Kasab
Publisher:
ISBN:
Category :
Languages : en
Pages : 256
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Author: Sanjay Mehta
Publisher:
ISBN:
Category :
Languages : en
Pages : 566
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Author: Larry Cates Windes
Publisher:
ISBN:
Category :
Languages : en
Pages : 412
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Author: Dennis F. Marr
Publisher:
ISBN:
Category :
Languages : en
Pages : 478
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Author: Tin Nam Tonny Nam
Publisher:
ISBN:
Category :
Languages : en
Pages : 408
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Author: Binbin Qi
Publisher:
ISBN:
Category :
Languages : en
Pages : 215
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"Trickle bed reactors (TBR), as typical packed bed reactors (PBR), are widely used in various fields. Very limited information regarding the flow behaviors, hydrodynamic, and mathematical models in extrudate catalyst shapes, such as cylinders, trilobes, and quadrilobes, can be found in literatures because the major focus was on spherical shape. Therefore, a hybrid pressure drops and liquid holdup phenomenological model for extrudate catalyst shapes was developed based on two-phase volume averaged equations, which showed high accuracy against experimental data. The maldistribution and dynamic liquid holdup were investigated in quadrilobe catalyst using gamma-ray computed tomography. A pseudo-3D empirical model was developed and compared with deep neural network predictions. Both models were in good agreement with experimental data. The accretion locations of heavy metal contaminants entrained with flow were tracked by the dynamic radioactive particle tracking technique in the packed beds of sphere, cylinder, trilobe, and quadrilobe, respectively. Kernel density estimator was used to indicate the accretion probability distribution, showing that pressure drop played an important role in heavy metal accretions. CFD simulations of random packed trilobe catalyst bed were conducted to obtain the local information and were validated by experimental data. Moving bed reactors (MBR), as a relatively new type of reactor, encounter many challenges due to the bed expansion because of the concurrent gas-liquid upflow. DEM simulation was used to generate expanded bed. A porosity distribution correlation was developed and implemented in CFD simulations to investigate the hydrodynamics"--Abstract, page iv.
Author: S. Whitaker
Publisher: Springer Science & Business Media
ISBN: 9401733899
Category : Science
Languages : en
Pages : 236
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Multiphase systems dominate nearly every area of science and technology, and the method of volume averaging provides a rigorous foundation for the analysis of these systems. The development is based on classical continuum physics, and it provides both the spatially smoothed equations and a method of predicting the effective transport coefficients that appear in those equations. The text is based on a ten-week graduate course that has been taught for more than 20 years at the University of California at Davis and at other universities around the world. Problems dealing with both the theoretical foundations and the applications are included with each chapter, and detailed solutions for all problems are available from the author. The course has attracted participants from chemical engineering, mechanical engineering, civil engineering, hydrologic science, mathematics, chemistry and physics.
Author: Hemant W. Dandekar
Publisher:
ISBN:
Category :
Languages : en
Pages : 130
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Author: Bouke Fokkes Tuinstra
Publisher:
ISBN: 9789090236629
Category :
Languages : en
Pages : 288
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