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Improved
Mixing Processes
Mixing
is fundamental to process efficiency and product quality.
- flexibility
in operation (multiple products from one plant, and variable batch
sizes)
- product
consistency and repeatability
- success
in scale-up/scale-down
These
are some of the mixing related concerns of industrialists that require
a good understanding of the underlying mechanisms and principles.
This specialist
course has been developed by BHR Group, and feedback from the previous
ten courses used to ensure that it meets the evolving requirements
of industry. A two-day format is adopted to better suit the needs
of industrialists.
More
Information
Course
Description
The course
aims to
- communicate
the principles of fluid mixing,
- provide recommendations
for process design and scale up,
- enable participants
to apply these principles and recommendations to their mixing
processes/problems and
- enable participants
to discuss specifications for the selection and operation of mixing
equipment.
Ideal
for:
Experienced
engineers and scientists as well as graduates from
the chemical and related industries (biochemical, pharmaceutical,
personal care) who are involved in process development, operation
or research and need to know more about the subject
The Course
Director is Dr Gül Özcan-Taskin and Course Lecturers
include Dr Alan Hall, Syngenta
Date
and Venue
The course runs
from 20 November - 21st November 2007
The course will
be held at Cranfield University, Bedfordshire.
Cranfield is
situated some 50 miles north of London between Bedford and Milton
Keynes, close to Junction 14 of the M1.
Accommodation
The course will be held at BHR Group premises, Cranfield, Bedfordshire.
Cranfield is situated some 50 miles north of London between Bedford
and Milton Keynes, close to Junctions 13 & 14 of the M1. Accommodation
is not included in the fee but a variety of rooms for a range of
budgets is available in the local area. A list will be provided
on registration or can be emailed on request. Please contact the
organiser.
A timetable
and joining instructions will be forwarded to delegates upon registration.
What
previous attendees said
This was a well presented course which provided a thorough understanding
of mixing fundamentals and practice in a short timeframe. The set
of notes that accompany the course will provide a comprehensive
reference in the future Darren Gobby and Neil Turner, Lucite International
UK Ltd.
We found that
the process mixing course provided an excellent overview of fundamentals
surrounding industrial scale mixing. The insights gained during
the course have resulted in an improved understanding of the controlling
factors in our mixing applications. This approach has provided opportunities
to improve efficiency or our mixing equipment resulting from an
improved product quality. Ian Taylor and James Bruce from Dow Corning
"This course
exceeded my expectations" Dr Chris Guske, Tate and Lyle, USA
Enquiries should
be addressed to
Mrs
Marian Rolfe, - Course Administrator
BHR Group
Limited
The Fluid Engineering Centre
Cranfield
Bedfordshire, MK43 0AJ
UK
Tel: + (0) 1234 750422
Fax:+ (0) 1234 750074
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Course
Programme
Day
one: Introduction
to Industrial Mixing Processes
20
November 2007
Why mixing matters? -
Introduction
Objectives, expectations and layout of course. Importance of mixing
in industrial processes, consequences of failures in mixing processes,
energy savings and social benefits, examples of capital and operating
cost savings.
Mixer
types and associated equipment
Different types of mixers (top, submerged and bottom entry mixers,
static mixers, jet mixed systems, and associated equipment). Flow
patterns, general guide to impeller selection, mechanical design.
Mixing
Concepts I
Process requirements, dimensionless groups, flow regimes (laminar,
turbulent, transitional), power requirements for mixing processes,
rules for scale-up and scale-down
Heat
Transfer
Introduction to concepts related to heat transfer in mixing equipment.
Mixing Concepts
II
Introduction to rheology: Newtonian, non-Newtonian fluid flow.
Blending liquids:
industrial needs, mixing time, techniques, design considerations
and recommendations for design.
Liquid-liquid
dispersions: industrial needs, definitions (coalescence, break-up,
phase inversion, just dispersion conditions), design considerations.
Mixing Concepts
III
Solid- liquid mixing: industrial applications and needs, different
states of solid suspensions, factors that affect solid suspension,
draw down of floating solids (including video demonstrations).
Gas-liquid mixing:
industrial applications and needs, techniques, gas-liquid hydrodynamics
and gas filled cavities (including video demonstrations), design
considerations.
Tutorial
- Example calculations, case studies
Tour of laboratories and mixing pilot plants at BHR Group.
Computational
Fluid Dynamics (CFD)
How
and why CFD is used to solve single and multiphase mixing and reaction
problems.
Day Two:
Advanced
Industrial Mixing
Fundamentals of mixing processes
21 November
2007
Liquid blending
Mechanisms of blending; blending regimes; blending liquids of low-to-medium
viscosity (turbulent and transitional regimes); scale-up and down;
blending high viscosity liquids (laminar regime); blending liquids
of different properties (including video demonstrations); CSTRs,
blending with jets.
Gas-liquid
mixing
Gas-liquid mixing design guidelines for low-to-medium viscosity
liquids; power requirements and effect of scale on gas dispersion;
hold-up and mass transfer; scale-up and down; multiple impellers.
Solid-Liquid
Mixing
Solid suspension: mechanistic and empirical models for solid suspension,
power requirements, scale-up and down, jet solid suspension; solids
distribution: multiple impellers; solid draw-down.
Liquid-liquid
dispersions
Phase continuity, deformation and breakup of drops (including video
demonstrations), coalescence phenomenon, impeller selection, mass
transfer in liquid-liquid dispersions.
In-line and
High Intensity Mixers
Blending, reactive mixing, gas -liquid mixing and liquid-liquid
mixing using in-line equipment (Static mixers, ejectors and rotor
stator mixers).
Industrial
Workshop
Questions and discussion of case studies from Course attendees.
This will
aim to discuss various mixing related problems from the attendees.
If required, appointments to discuss these privately with the engineers
of BHR Group can be arranged.
Attendees can
choose either or both days to suit their specific requirements.
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