Chemical Engineering September 2014 - 70

Water Management Special Advertising Section
Keeping supplies of fresh water flowing
Eastman Therminol heat transfer fluids play a key role in the efficient and reliable
operation of thermal desalination plants
A
ccording to www.unwater.org, by 2025,
two-thirds of the world's population
could be under freshwater stress conditions.
Current estimates indicate only 0.5%
of the global water supply is available as
fresh water. An additional 2.5% is frozen
water at the poles or in glaciers, and the
remaining 97% is undrinkable seawater.
To sustain a growing global population
with safe and dependable supplies of fresh
water, recycling of wastewater or desalination
of seawater is critical. Several desalination
technologies exist; those based on
distillation may use heat transfer fluids.
Eastman Therminol heat transfer fluids
are available to support desalination
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is from concentrating solar or fuel-fired
heaters. Thermal stability ensures long
life for the fluid, resistance to fouling, and
excellent fluid-side heat transfer coefficients
for consistent and reliable service.
Additionally, CSP (concentrating solar
power) hybrid applications, combining CSP
and desalination, are a new development
in alternative energy and water recycling
technologies. Again, Therminol heat transfer
fluids can help.
* Therminol 66 is the world's most popular
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transfer fluid. Therminol 66 is pumpable
at low temperatures, and offers hightemperature
thermal stability.
* Therminol 59 is a synthetic fluid with excellent
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and thermal stability.
* Therminol XP heat transfer fluid is an extremely
pure white mineral oil which provides
reliable heat transfer.
* Therminol 55 is a synthetic fluid used
in moderate-temperature applications.
Therminol 55 fluid is designed for use in
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* Therminol VP-1 heat transfer fluid is an
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Desalination: a key technology for
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www.therminol.com
Static mixers with low pressure drop
Ross LPD Low Pressure Drop Static Mixers are ideal for effective fluid mixing in water
and wastewater treatment processes
he Ross Low Pressure Drop (LPD) Static
Mixer enables more efficient dosing
of flocculants, disinfectants, neutralizing
T
agents and pH conditioners into a water
stream. This simple-to-install heavy-duty
device completely mixes treatment chemicals
within a short length of pipe. When
used in conjunction with automated instrumentation,
the LPD delivers predictable
quality control based on a virtually maintenance-free
operation.
The LPD Static Mixer consists of a seFour
or six mixing elements are
usually more than sufficient for effective
mixing under turbulent flow conditions,
Ross says. Diameters range from 1 in.
through 48 in.
ries of baffles or " elements " discriminately
positioned in series. Each element comprises
a pair of semi-elliptical plates set 90
degrees to each other. The next element is
rotated 90 degrees about the central axis
with respect to the previous baffle set, and
so on. For even lower pressure drop, an
LLPD model is also available, in which the
plates of each element are oriented at 120
degrees relative to each other.
As the fluid moves through each LPD
or LLPD element, flow is continuously split
into layers and rotated in alternating clockwise
and counterclockwise directions.
This method of subdividing the stream
and generating striations leads to highly
70||||||CHEMICAL ENGINEERING||||WWW.CHEMENGONLINE.COM||||SEPTEMBER 2014
efficient and repeatable mixing with minimal
pressure loss. During turbulent flow,
the baffles enhance the random motion
of molecules and the formation of eddies.
In most water and wastewater processes,
four or six elements are more than sufficient
to completely disperse treatment
chemicals and create a very uniform solution
or suspension.
Small LPD/LLPD mixers of 1 in. through
2.5 in. in diameter are welded to a central
rod, while larger elements are welded to
four outside support rods for maximum
rigidity and stability. Available in a wide
range of sizes up to 48 in. in diameter,
these mixers can be supplied as pipe inserts
or as complete modules with housing
and injection ports.
In addition to Static Mixers, Ross also
manufactures High Shear Mixers and
Multi-Shaft Mixers used in the production
of water treatment chemicals. The company
offers no-charge mixer testing services
and an extensive trial/rental program.
www.mixers.com
http://www.unwater.org http://www.therminol.com http://www.mixers.com

Chemical Engineering September 2014

Table of Contents for the Digital Edition of Chemical Engineering September 2014

Contents
Chemical Engineering September 2014 - Cover1
Chemical Engineering September 2014 - Cover2
Chemical Engineering September 2014 - Contents
Chemical Engineering September 2014 - 2
Chemical Engineering September 2014 - 3
Chemical Engineering September 2014 - 4
Chemical Engineering September 2014 - 5
Chemical Engineering September 2014 - 6
Chemical Engineering September 2014 - 7
Chemical Engineering September 2014 - 8
Chemical Engineering September 2014 - 9
Chemical Engineering September 2014 - 10
Chemical Engineering September 2014 - 11
Chemical Engineering September 2014 - 12
Chemical Engineering September 2014 - 13
Chemical Engineering September 2014 - 14
Chemical Engineering September 2014 - 15
Chemical Engineering September 2014 - 16
Chemical Engineering September 2014 - 17
Chemical Engineering September 2014 - 18
Chemical Engineering September 2014 - 19
Chemical Engineering September 2014 - 20
Chemical Engineering September 2014 - 21
Chemical Engineering September 2014 - 22
Chemical Engineering September 2014 - 23
Chemical Engineering September 2014 - 24
Chemical Engineering September 2014 - 25
Chemical Engineering September 2014 - 26
Chemical Engineering September 2014 - 27
Chemical Engineering September 2014 - 28
Chemical Engineering September 2014 - 29
Chemical Engineering September 2014 - 30
Chemical Engineering September 2014 - 31
Chemical Engineering September 2014 - 32
Chemical Engineering September 2014 - 33
Chemical Engineering September 2014 - 34
Chemical Engineering September 2014 - 35
Chemical Engineering September 2014 - 36
Chemical Engineering September 2014 - 37
Chemical Engineering September 2014 - 38
Chemical Engineering September 2014 - 39
Chemical Engineering September 2014 - 40
Chemical Engineering September 2014 - 41
Chemical Engineering September 2014 - 42
Chemical Engineering September 2014 - 43
Chemical Engineering September 2014 - 44
Chemical Engineering September 2014 - 45
Chemical Engineering September 2014 - 46
Chemical Engineering September 2014 - 47
Chemical Engineering September 2014 - 48
Chemical Engineering September 2014 - 49
Chemical Engineering September 2014 - 50
Chemical Engineering September 2014 - 51
Chemical Engineering September 2014 - 52
Chemical Engineering September 2014 - 53
Chemical Engineering September 2014 - 54
Chemical Engineering September 2014 - 55
Chemical Engineering September 2014 - 56
Chemical Engineering September 2014 - 57
Chemical Engineering September 2014 - 58
Chemical Engineering September 2014 - 59
Chemical Engineering September 2014 - 60
Chemical Engineering September 2014 - 61
Chemical Engineering September 2014 - 62
Chemical Engineering September 2014 - 63
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Chemical Engineering September 2014 - 65
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Chemical Engineering September 2014 - 70
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Chemical Engineering September 2014 - 74
Chemical Engineering September 2014 - 75
Chemical Engineering September 2014 - 76
Chemical Engineering September 2014 - 77
Chemical Engineering September 2014 - 78
Chemical Engineering September 2014 - 79
Chemical Engineering September 2014 - 80
Chemical Engineering September 2014 - Cover3
Chemical Engineering September 2014 - Cover4
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