Chemical Engineering June 2010 - 24

Purafil
Corrosion Monitoring
serviCe Providers
Newsfront
GE Energy
Honeywell
data using user-written rules and
embedded knowledge. When specific
conditions or anomalies of an
unknown origin are detected, the
system can send advisories to personnel
who can then take immediate
action to control the situation.
www.gepower.com
www.honeywell.com
Metal Samples Corrosion
Monitoring Systems
www.alspi.com/ms.htm
Nalco Energy Services www.nalco.com
Pepperl + Fuchs www.pepperl-fuchs.com
Purafil
www.purafil.com
Specialized applications
Fortunately, proactive analysis of corrosion
data is not limited to the pipes
and tanks within chemical processing
facilities. Nalco Energy Services (Sugarland,
Tex.) offers a pre-boiler corrosion-control
strategy called NCSM
technology. The company's 3D Trasar
boiler technology, using the NCSM
minimizes boiler feedwater corrosion
by measuring the net oxidation/reduction
potential (ORP) as a voltage
reading of the bulk feedwater at the
actual boiler operating temperatures
and pressures. NCSM technology detects
changes in oxidation/reduction
stress and responds in realtime by
changing oxygen scavenger or metal
passivator feed to maintain the ideal
ORP setpoint.
This technology makes it possible
to detect and react to the conditions
inside the boiler system under actual
operating temperatures and pressures.
This is a significant leap in technology,
according to Maureen Gerty,
global industry development manager
with Nalco, who says previously
samples had to be cooled, which
did not provide the same type of
response as measuring at-temperature
ORP. " When you can take these
measurements at temperature, you
are actually measuring the real corrosion
stress potential, which is far more
sensitive than a measurement that's
been cooled, " Gerty explains. " This allows
users to capture all the potential
stresses involved and because this
information is part of the 3D Trasar
boiler technology platform, it can be
incorporated with all propriety dashboards,
notifications and alarms, so
realtime visibility is possible. "
This realtime capability can be programmed
to notify key personnel and
automatically respond by pushing
more of certain chemicals or cutting
back on them.
And for cleanrooms or other processes
that require air monitoring,
Purafil's OnGuard 3000 Atmospheric
Corrosion Monitor is an electronic instrument
that provides realtime readings
of an environment's corrosive
reactivity level. The OnGuard 3000
also provides realtime temperature
Purafil's OnGuard 3000 Atmospheric Corrosion
Monitor is an electronic instrument
that provides realtime readings of an environment's
corrosive reactivity level
and relative humidity readings, which
affect the rate of corrosion. By using
OnGuard 3000 along with a control
system, users may take preventive action
before corrosion damage leads to
repairs and production shutdown.
Kevin Wilson, technical services engineer
with Purafil, says when the tool is
tied into a control system, it is possible
to automatically bump up the amount
of air or pressure being pumped into
the room when the measured interval
of corrosion climbs too high.
" With today's RoHS (Restriction of
Hazardous Substances Directive) instruments,
the traces on circuit boards
and instruments are more susceptible
to more kinds of corrosion than the
traditional lead traces. This kind of realtime
knowledge provides the power
necessary to keep a room at optimal
conditions and avoid frequent replacement
of expensive electronic equipment
or unplanned downtime caused
by loss of that equipment. "
n
Joy LePree
HIGH PRESSURE PUMPING SOLUTIONS
woodgroupsurfacepumps.com
Circle 24 on p. 62 or go to adlinks.che.com/29251-24
24 ChemiCal engineering www.Che.Com June 2010
WGSP 3rd pg ad_CE.indd 1
1/11/10 3:16 PM
http://www.gepower.com http://www.honeywell.com http://www.alspi.com/ms.htm http://www.nalco.com http://www.pepperl-fuchs.com http://www.purafil.com http://www.woodgroupsurfacepumps.com http://adlinks.che.com/29251-24 http://www.Che.Com
Chemical Engineering June 2010

Table of Contents for the Digital Edition of Chemical Engineering June 2010
