Chemical Engineering May 2016 - 10

200°C by operating at a high pressure of 36
bars, instead of under 1 bar, as previously
used. " Working at a constant temperature
makes this a much easier process to implement
in industry, " says Patrick Tomkins,
ETH Zurich master student and first author
of the study, published in Angewandte
Chemie International.
The researchers were also able to show
that, at the atomic level, the reaction in
the new low-temperature/high-pressure
method takes place at different active
sites of the copper-zeolite catalyst. Because
a different reaction pathway is
involved, the researchers are now investigating
the possibility of performing the
reaction using catalysts that had not been
considered before.
Co2 sCrubbing
Linde Gases, a division of The Linde Group
(Munich, Germay; www.linde.com), has
launched a mobile technology to economically
remove CO2 from early flowback natural
gas. The new mobile gas-cleanup unit
(MGCU) uses an innovative membrane
technology to remove up to 98% of the CO2
in the production stream. It was designed to
improve production-well economics, with an
(Continues on p. 11)
Design-of-experiments approach optimizes
metal-grinding fluids
A
design-of-experiments (DoE)
approach has resulted in better-performing
fluids for metal
grinding, cutting and machining
applications. These fluids serve
to lubricate cutting surfaces, remove
heat, prevent corrosion and carry
away fine particulates that can distort
machined surfaces. In recent years,
machining practices have required
higher-performance fluids that comply
with stricter environmental, health and
safety (EHS) mandates.
In an effort to meet the modern performance
demands of metalworking
fluids, Houghton International Inc.
(Valley Forge, Pa.; www.houghtonintl.com)
developed an optimization
platform based on DoE that resulted
in fluids with breakthrough performance
in several key criteria for water-miscible
metalworking fluids, the
company says. " By optimizing the
desirable properties in a systematic
way, using DoE, we were able to arrive
at metalworking fluids that outperform
traditional fluids, which are
usually built off of existing products, "
explains Dave Slinkman, senior vice
president for global research and
technology at Houghton.
Key criteria include lubricity profile,
emulsion stability, anti-foaming qualities,
corrosion-resistance and biostability
(preventing odor issues and
extending product life). In addition,
Slinkman says, the fluids are optimized
for EHS performance. They are free of
potentially regulated substances, such
as boron, formaldehyde-releasing
agents, secondary amines, chlorine,
phenols and nitrites.
In April, Houghton introduced its
first product developed using the
DoE platform. Known as Hocut 4440,
the new fluid is designed for use with
iron-based metals, including cast
iron and steel. It is a semi-synthetic,
water-miscible formulation and provides
good lubrication and excellent
cooling for titanium grinding operations,
Houghton says.
MONITOR VISCOSITY SIMPLY
SENSE MIXER MOTOR HORSEPOWER
WITH UNIVERSAL POWER CELL
EASY INSTALLATION
* No holes in tanks or pipes
* Away from sensitive processes
VERSATILE
* One size adjusts to motors, from
small up to 150hp
* Works on 3 phase, fi xed or variable
frequency, DC and single phase power
SENSITIVE
* 10 times more sensitive than
just sensing amps
CONVENIENT OUTPUTS
* For meters, controllers, computers
4-20 milliamps 0-10 volts
PROFILING A PROCESS
* Power changes refl ect viscosity changes
* Good batches will fi t the normal " profi le " for
that product
24
22
20
18
16
14
12
10
8
6
4
2
BATCH 1
BATCH 2
BATCH 3
POWER DECREASE
SHOWS BATCH
IS DONE
POWER
SENSOR
DRY MIX
HIGH SPEED
ADD LIQUID
LOW SPEED
MIXER
MOTOR
BEGIN HIGH
SPEED MIX
CALL NOW FOR YOUR FREE 30-DAY TRIAL 888-600-3247
WWW.LOADCONTROLS.COM
Circle 19 on p. 94 or go to adlinks.chemengonline.com/61495-19
10
ChemiCal engineering www.Chemengonline.Com may 2016
http://www.houghton http://www.intl.com http://www.linde.com http://WWW.LOADCONTROLS.COM http://adlinks.chemengonline.com/61495-19 http://www.Chemengonline.Com
Chemical Engineering May 2016

Table of Contents for the Digital Edition of Chemical Engineering May 2016
