Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
he column is 4 m high and the mass of solids in the bed is held constant at 3,500 kg. The bed is fluidized using dry air at 700 K (density = 0.504 kg/m and viscosity = .33×10° Pa-s). Under these conditions, the superficial gas velocity is 0.2 m/s and the mean bubble size is 5 cm. ) Calculate the minimum fluidization velocity of the particles (bed voidage at incipient fluidization is 0.45), ) What is the bed height under the operating conditions listed above? ) What is the fraction of bubbles in the bed? ) What fraction of particles will be entrained in the gas?

he column is 4 m high and the mass of solids in the bed is held constant at 3,500 kg. The bed is fluidized using dry air at 700 K (density = 0.504 kg/m and viscosity = .33×10° Pa-s). Under these conditions, the superficial gas velocity is 0.2 m/s and the mean bubble size is 5 cm. ) Calculate the minimum fluidization velocity of the particles (bed voidage at incipient fluidization is 0.45), ) What is the bed height under the operating conditions listed above? ) What is the fraction of bubbles in the bed? ) What fraction of particles will be entrained in the gas?

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
See similar textbooks
icon
Related questions
Question
A powder made of spherical particles having a density of 1,600 kg/m and the size distribution shown in the table below, is fed into a fluidized bed, 2.2 m in diameter. Size range (um) mass fraction in feed 40 - 60 0.25 60 - 80 0.45 80 - 100 0.30 The column is 4 m high and the mass of solids in the bed is held constant at 3,500 kg. The bed is fluidized using dry air at 700 K (density = 0.504 kg/m° and viscosity = 3.33x10° Pa - s). Under these conditions, the superficial gas velocity is 0.2 m/s and the mean bubble size is 5 cm. a) Calculate the minimum fluidization velocity of the particles (bed voidage at incipient fluidization is 0.45), b) What is the bed height under the operating conditions listed above? c) What is the fraction of bubbles in the bed? d) What fraction of particles will be entrained in the gas?
Transcribed Image Text:A powder made of spherical particles having a density of 1,600 kg/m and the size distribution shown in the table below, is fed into a fluidized bed, 2.2 m in diameter. Size range (um) mass fraction in feed 40 - 60 0.25 60 - 80 0.45 80 - 100 0.30 The column is 4 m high and the mass of solids in the bed is held constant at 3,500 kg. The bed is fluidized using dry air at 700 K (density = 0.504 kg/m° and viscosity = 3.33x10° Pa - s). Under these conditions, the superficial gas velocity is 0.2 m/s and the mean bubble size is 5 cm. a) Calculate the minimum fluidization velocity of the particles (bed voidage at incipient fluidization is 0.45), b) What is the bed height under the operating conditions listed above? c) What is the fraction of bubbles in the bed? d) What fraction of particles will be entrained in the gas?
Expert Solution
steps

Step by step

Solved in 7 steps with 6 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Units and Dimensions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The
SEE MORE TEXTBOOKS