This document provides an overview of fluidization, which refers to transforming fine solids into a fluid-like state through contact with gas or liquid. Fluidization occurs when the drag forces from the fluid counteract gravitational forces on the particles, causing the bed to expand and behave like a liquid or gas. Examples where fluidization is used include fluidized bed reactors and combustion. The document discusses the minimum fluidization velocity and bed expansion during fluidization. Fluidized beds offer advantages like compact design and continuous operation but also challenges like non-uniform flow patterns.
The processing technique employing a suspension or fluidization of small solid particles in a vertically rising stream of fluid usually gas so that fluid and solid come into intimate contact. This is a tool with many applications in the petroleum and chemical process industries. Suspensions of solid particles by vertically rising liquid streams are of lesser interest in modern processing, but have been shown to be of use, particularly in liquid contacting of ion-exchange resins. However, they come in this same classification and their use involves techniques of liquid settling, both free and hindered (sedimentation), classification, and density flotation.
Fluidized Bed Reactor - Basic Mechanism, Mass Transfer in Fluidized Beds, Reaction Behaviour in a Fluidized Bed, Mole Balance on the Bubble, the Cloud, and the Emulsion, Advantages & Disadvantages, Current Applications of FBR.
Slides for the eLearning course Separation and purification processes in biorefineries (https://open-learn.xamk.fi) in IMPRESS project (https://www.spire2030.eu/impress).
Section: Mass transfer processes
Subject: 3.2 Equipment
This presentation related to molecular diffusion of molecules in gases and liquids. Also includes inter-phase mass transfer and various theories related to it like two film theory, penetration theory and surface renewal theory.
The processing technique employing a suspension or fluidization of small solid particles in a vertically rising stream of fluid usually gas so that fluid and solid come into intimate contact. This is a tool with many applications in the petroleum and chemical process industries. Suspensions of solid particles by vertically rising liquid streams are of lesser interest in modern processing, but have been shown to be of use, particularly in liquid contacting of ion-exchange resins. However, they come in this same classification and their use involves techniques of liquid settling, both free and hindered (sedimentation), classification, and density flotation.
Fluidized Bed Reactor - Basic Mechanism, Mass Transfer in Fluidized Beds, Reaction Behaviour in a Fluidized Bed, Mole Balance on the Bubble, the Cloud, and the Emulsion, Advantages & Disadvantages, Current Applications of FBR.
Slides for the eLearning course Separation and purification processes in biorefineries (https://open-learn.xamk.fi) in IMPRESS project (https://www.spire2030.eu/impress).
Section: Mass transfer processes
Subject: 3.2 Equipment
This presentation related to molecular diffusion of molecules in gases and liquids. Also includes inter-phase mass transfer and various theories related to it like two film theory, penetration theory and surface renewal theory.
Agitation and Mixing are two important unit operations used in industries such as Impellers agitators are widely used to circulate the liquid through the vessel in which the dispersion of liquids and gases into other liquids like mixing of stiff paste, elastomers and dry solids powders takes place.
Different settling methods in mechanical operations Jaydrath Sindhav
Its part of sedimentation which is covered under the Mechanical operations. It contains the gravity sedimentation, clarifier and classifiers, sink and float method, gravity and sorting classifiers, differential settling methods etc....
Its just gives basic concept of sedimentation.
This is a presentation on agitation and mixing of fluids. Agitation is the heart of all chemical methods. Every production process require agitation. That's why it is very important to make sure that the agitation is properly handled in a process. In this presentation we are going to discuss about agitation of fluids only. It doesn't contain the whole thing but the basic ideas about agitation.
The first lecture in the module Particle Technology, delivered to second year students who have already studied basic fluid mechanics. Some applications of Particle Technology are described, in industry and nature, and particle size analysis and means of representing the data. The format for the laboratory classes for the module and their reports are covered.
Fluid Mechanics introduction for UG students
Fluid properties
Reynolds experiment
Manometer
Orificemeter
Venturimeter
Pitot tube
Rotameter
Current flow meter
Problem on Fluidization - Fluid Mechanics & Mechanical Operations (FMMO). Please refer same.
If you wish to be part of detailed understanding of concepts through an interactive sessions, please register to ATTEMPT Batch#02 Course (April to October 2021).
Write us at attempttosucceed@gmail.com or comment below so that we can revert back to you.
Agitation and Mixing are two important unit operations used in industries such as Impellers agitators are widely used to circulate the liquid through the vessel in which the dispersion of liquids and gases into other liquids like mixing of stiff paste, elastomers and dry solids powders takes place.
Different settling methods in mechanical operations Jaydrath Sindhav
Its part of sedimentation which is covered under the Mechanical operations. It contains the gravity sedimentation, clarifier and classifiers, sink and float method, gravity and sorting classifiers, differential settling methods etc....
Its just gives basic concept of sedimentation.
This is a presentation on agitation and mixing of fluids. Agitation is the heart of all chemical methods. Every production process require agitation. That's why it is very important to make sure that the agitation is properly handled in a process. In this presentation we are going to discuss about agitation of fluids only. It doesn't contain the whole thing but the basic ideas about agitation.
The first lecture in the module Particle Technology, delivered to second year students who have already studied basic fluid mechanics. Some applications of Particle Technology are described, in industry and nature, and particle size analysis and means of representing the data. The format for the laboratory classes for the module and their reports are covered.
Fluid Mechanics introduction for UG students
Fluid properties
Reynolds experiment
Manometer
Orificemeter
Venturimeter
Pitot tube
Rotameter
Current flow meter
Problem on Fluidization - Fluid Mechanics & Mechanical Operations (FMMO). Please refer same.
If you wish to be part of detailed understanding of concepts through an interactive sessions, please register to ATTEMPT Batch#02 Course (April to October 2021).
Write us at attempttosucceed@gmail.com or comment below so that we can revert back to you.
This presentation constitutes an integral component of a designated course curriculum and is crafted and disseminated for its intended audience. None of the contents within this presentation should be construed as a formal publication on the subject matter. The author has extensively referenced published resources in the preparation of this presentation, and proper citations will be provided in the bibliography upon completion of its development.
FLUID IN MOTION
HYDRODYNAMICS
Hydrodynamics is the branch of physics which deals with the study of properties of fluids in motion.
Viscosity of the fluid
Class 9 Chapter 1 Matter in our surrounding ncert cbse board ppt
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Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
4. What Is Fluidization …….???
The Operation by which Fine Solids are
Transformed into Fluid-Like State,
through Contact with the Gas or Liquid.
5. Fluidization refers to those Gas-Solids and
Liquid-Solids system in which the solid
phase is subjected to behave more or less
like a Fluid by the upwelling current of gas or
liquid stream moving through the bed of solid
particles.
Fluidized bed combustion and Catalytic
cracking of heavy crude-oil fractions of
petroleum are the two good examples of
Fluidization.
6. Some Size Reduction Processes used in
Fluidization Process
Attrition
Compression
Impact
Shear
7. Types
When Fluidizing Sand with Water, the
particles move further apart and their
motion becomes more vigorous as the
velocity is increased, but the bed
density at a given velocity is same in
all sections of the bed. This is
called Particulate Fluidization and is
characterized by a large but uniform
expansion of the bed at high
velocities.
8. And if …..
Beds of solids fluidized with Air usually
exhibit what is called
Aggregative or Bubbling Fluidization.
At superficial velocities much greater
than Vmf most of the gas passes
through the bed as bubbles or voids
which are almost free of solids, and
only a small fraction of the gas flows in
the channels between the particles.
9. How Fluidization ..?
PROCESS
When a gas flow is introduced through the
bottom of a bed of solid particles, it will
move upwards through the bed via the
empty spaces between the particles. At low
gas velocities, aerodynamic drag on each
particle is also low, and thus the bed
remains in a fixed state. Increasing the
velocity, the aerodynamic drag forces will
begin to counteract the gravitational
forces, causing the bed to expand in
volume as the particles move away from
each other.
10. Further increasing the velocity, it will reach
a critical value at which the upward drag
forces will exactly equal the downward
gravitational forces, causing the particles
to become suspended within the fluid. At
this critical value, the bed is said to be
fluidized and will exhibit fluidic behavior. By
further increasing gas velocity, the bulk
density of the bed will continue to
decrease, and its fluidization becomes
more violent, until the particles no longer
form a bed and are "conveyed" upwards by
the gas flow.
11. When fluidized, a bed of solid particles will
behave as a fluid, like a liquid or gas. Like
water in a bucket: the bed will conform to
the volume of the chamber, its surface
remaining perpendicular to gravity;
objects with a lower density than the bed
density will float on its surface, bobbing up
and down if pushed downwards, while
objects with a higher density sink to the
bottom of the bed. The fluidic behavior
allows the particles to be transported like a
fluid, channeled through pipes, not
requiring mechanical transport (e.g.
conveyor belt).
13. Fluidization starts at a point when the bed
pressure drop exactly balances the net
downward forces (gravity minus buoyancy
forces) on the bed packing, so
Dp/L = (1-e)(rs - r)g 1
2
Substituting for Dp/L from Ergun's equation
14. In most industrial applications involving
fluidized beds, the particle diameter is
small, and VS also small. In these cases,
the second term of the above equation is
negligible compared to the first, so that
3
For a given bed the above equation can be
used for both the unexpanded and the
expanded state.
15. Why Fluidization ..?
Application of Fluidization
Fluidized solids can be easily transferred
between reactors.
The intense mixing within a fluidized bed
means that its temperature is uniform.
There is excellent heat transfer between a
fluidized bed and heat exchangers
immersed in the bed.
To avoid particles to flow in air.
16. Example
A simplified every-day-life example of a
gas-solid fluidized bed would be a hot-air
popcorn popper. The popcorn kernels, all
being fairly uniform in size and shape, are
suspended in the hot air rising from the
bottom chamber. Because of the intense
mixing of the particles, akin to that of a
boiling liquid, this allows for a uniform
temperature of the kernels throughout the
chamber, minimizing the amount of burnt
popcorn. After popping, the now larger
popcorn particles encounter increased
aerodynamic drag which pushes them out
of the chamber and into a bowl.
17. Fluidized bed,
Used for Fluidization
A fluidized bed is formed when a quantity
of a solid particulate substance (usually
present in a holding vessel) is placed
under appropriate conditions to cause a
solid/fluid mixture to behave as a fluid.
This is usually achieved by the introduction
of pressurized fluid through the particulate
medium. This results in the medium then
having many properties and characteristics
of normal fluids, such as the ability to
free-flow under gravity, or to be pumped
using fluid type technologies. The resulting
phenomenon is called fluidization.
18. When trying to describe the operation of a
fluidized bed, one main definition is the
minimum fluidization velocity. This parameter
is defined as "the superficial fluid velocity
at which the upward drag force exerted
by the fluid is equal to the apparent
weight of the particles in the bed”.
Another common characteristic of
fluidized beds is the bed expansion.
When incipient fluidization is achieved,
the fluid flowing upwards pushes the
particles up and the separation distance
between particles increases. This
Increases the void volume within the bed of
particles and the bed is considered expanded
19.
20. Uses of Fluidized bed
Fluidized beds are used for several
purposes, such as fluidized bed reactors
(types of chemical reactors), fluid
catalytic cracking, fluidized bed
combustion, heat or mass transfer or
interface modification, such as applying
a coating onto solid items.
21. Advantages n Disadvantages of
Fluidized bed
Compact, simple in construction and easily
scalable.
Thermal efficiency
Continuous operation
Ease of process control due to stable conditions
Non-uniform flow patterns (difficult to predict).
Agglomeration of particle decrease effective
surface area.
Possible breakage of fine particles.
Bed walls erosion