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22
Regular features
3
Comment
35
IChemE SAIChE news
36
Sudoku 103/Et cetera
Cover story
4
New generation of encapsulated disc spring system
from AESSEAL
AESSEAL recently launched LiveStar, a new-generation live-
loading system, designed to be compact without requiring extra
bolt length to accommodate the uncompressed disc spring
stack – a system which will find a major market in control valves
in environmentally sensitive applications.
Corrosion & coatings
6
Corrosion problems in incinerators and biomass-fuel-
fired boilers
Incinerators are widely used to burn municipal waste, biowaste,
wood, straw, and biomedical waste. Combustion of these wastes
results in the generation of chlorides of sodium and potassium
which may attack the metallic part of the incinerator. In biofuel-
fired boilers, a similar type of highly corrosive environment is
also found.
by Deepa Mudgal, Surendra Singh, and Satya Prakash, all of
the Department of Metallurgical and Materials Engineering,
Indian Institute of Technology, Roorkee, Uttarakhand, India
11
Focus on corrosion & coatings
Control & instrumentation
14
Functional safety for machine controls
When implementing technical protective measures from the
‘hierarchy of controls’, each risk reduction measure will be
associated with a safety function or combination of safety
functions. For these safety functions to be designed and installed
to a degree of reliability commensurate with the risk level of the
associated hazard(s), the concepts of functional safety must
be applied.
by SICK Safety Application Specialist, Chris Soranno
20
Focus on control & instrumentation
Nanotechnology
22
Self-cleaning surfaces have widespread applications
A surface that is hydrophobic has an astonishing number of
properties. Besides the obvious one of water pouring off, bacteria,
fungi, algae and other pathogens cannot get a grip either. The
difficulty in creating synthetic surfaces with similar properties is
that they are damaged over time.
by Gavin Chait
25
Focus on nanotechnology
Supply chain management
26
Profitability through supply chain excellence −
A ‘Technology Insight’ for specialty chemicals producers
Globalisation and the uncertainties of an ever-changing economic
landscape have introduced new complexity to the specialty
chemicals business. On a daily basis, specialty chemicals
producers must navigate multiple variables to determine the most
profitable products to produce, when and where to produce them
and how to successfully execute against that plan.
Article supplied by IChemE and Aspentech
33
Focus on supply chain management
Contents
Chemical Technology is
endorsed by The South
African
Institution of Chemical
Engineers
Transparency You Can See
Average circulation
(July – September 2014)
Paid: 17
Free: 3 968
Total: 3 715
and the Southern African
Association of Energy
Efficiency
DISCLAIMER
The views expressed in
this journal are not neces-
sarily those of the editor
or the publisher.
Generic images courtesy
of
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