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| DECANTER CENTRIFUGE HANDBOOK
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To order this title, and for more information, click here
Edited By
A. Records
K Sutherland
Description
Scope of Publication
A reference work for process designers and users of decanters, this book aims to bridge the
information gap in this field - that between academic theory promoted in student textbooks and case study data in manufacturers sales
literature.
Design
It includes information on design and specification, preparing the reader to select and correctly
size equipment.
Purchase
As a design or project engineer working with vendors to make final equipment selection,
this work provides the readers with the full facts before they start talking to product vendors.
Supply
In an
environment of industry consolidation, the handbook allows you to track suppliers old and new, providing a basis on which users can find
the new relevant company for the parts/service he/she wishes to purchase.
Operation
Once an equipment purchase
is made, the user needs to be made aware of how to optimally operate decanters. The Decanter Centrifuge Handbook covers relevant
(process) operating issues such as instrumentation and control and the use of flocculents.
Audience
Process designers, manufacturers and users of decanters.
Contents
Introduction
Decanter development Manufacturers:
who entered the markeplace, who left, who owns
whom, specialities of major suppliers
Trends in technology
Decanter Design
Basic
construction:
vertical/horizontal, concurrent/countercurrent, leading/trailing conveyor, design limitation, natural frequency
versus L/D and design
Materials of construction:
maximum bowl speed versus bowl diameter, materials of construction
Basic components:
bowl, conveyor, casing, drive, backdrive, gearbox, frame and mounting, inlets and outlets, bearings
and seals
Variants:
bowl diameter, clarifying length, beach angle, scolling aids: liners and grooving, conveyor
leads, conveyor pitch, flight profile, cant and rake, flow: axial helical and vane assisted, baffle designs, feed zone design and position,
polymer inlets, gearbox designs and alternatives, cake discharge, brakes, weat inserts, tiles, noise abatement features, surface finishes
Special features:
three phase design, screen bowls, double beach design, nozzle cake discharge, vanes and discs,
casing baffles, windage control, cake collectors, cake reslurry, back drive systems, centripetal pump, skimmer pipe, drain valves, high
temperature and high pressure designs, compound beach angles
Instrumentation:
Tachometers, proximity probes, torque
monitoring, power meters, controllers
The Market
Where decanters are used, how many are used, importance
in that market, impact on decanter design and use for manufacturer and end-user
Applications:
effluent -
municipal and industrial, drilling muds, olive and palm oils, proteins, starches, brewery and distillery grains, dairy, petrochemicals,
minerals, pharmaceuticals, heavy chemicals, clays, water works sludges, fish meal, surimi, rendering
Application Types:
clarification, classification, dewatering, extra dry solids, washing, reslurry wash, thickening
Theory
Clarification:
sigma theory, classification, thickening, compaction, limitations, examples
Conveying:
beta theory, scrolling, scrolling
efficiency, dewatering examples
Power Consumption:
W&F, scrolling, process, braking, total
Polymer
Addition:
mixing, flocculation time, addition point, consumption
Pressure developed:
in liquor, in cake,
equivalent of torque, g-force
Scaling:
conveying, power, torque, dryness, capacity
Particle size distribution:
cut point, surface area, converting number of weight distribution, use with sigma and capacity
Moving layer theory
Calculating the effect of vanes and discs
Fundamental studies
Flocculents
Types of flocculents:
polycrylomides and others, anoimic, cationic, nonionic, molecular weight, ionic charge
Dosing
Make-up:
methods, equipment, time, concentration, addition point
Test work and data
Test methods:
equipment needed, planning the test, data needed, manipulating the data, examples of data to illustrate theory
Calculations
and scale-up
Options
Identifying the pertinent method
Data needed
Preparing the date:
function to be calculated
Mass balance
Recovery
Polymer
Dose
g-level
Power Calculations
Worked examples
Plant
Instrumentation and Control
The complete decanter plant is considered. Feed and polymer pumps, polymer make up systems,
off-take conveyors and centrate receivers will all be included. Instrumentation in common use will be enumerated including mechanical
and electronic devices. These will include level indicators, speed meters, torque meters, solids in liquid monitors and meters, timers,
starters, vibration monitors and bearing condidtion monitors
Decanter Features for special applications
Tables
of decanter data
Nomenclature, acknowledgements, references, index
| Bibliographic details |
Hardbound, 440 pages, publication date: MAR-2001
ISBN-13: 978-1-856173-69-8
ISBN-10: 1-856173-69-0
Imprint: ELSEVIER
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| Price and Ordering |
Price:
GBP 202
USD 325
EUR 237.95
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Books and book related electronic products are priced in US dollars (USD), euro (EUR), and Great Britain Pounds (GBP). USD prices apply to the Americas and Asia Pacific. EUR prices apply in Europe and the Middle East. GBP prices apply to the UK and all other countries.
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Last update: 4 Sep 2009
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