Chemical Engineering April 2023 - 56

Solids Processing 2023 Special Advertising Section
Lechler: Spray expertise built over a century of
delivering cutting-edge nozzle designs.
F
or over 142 years, Lechler has taken
pride in designing spray nozzles used
in critical areas of many industry segments
such as Steel, Cement, Power, Pulp
& Paper, Oil & Gas, Chemical, Automotive,
Electronics, Food and Beverage,
Pharmaceuticals, Agriculture, and more.
We have built unparalleled knowledge in
delivering engineered spray solutions to
meet and exceed our customers' process
goals. With a portfolio of more than 45,000
nozzles, Lechler is able to offer our customers
the most comprehensive product range.
From consulting for developing a customer's
crucial process application to building
CFD models based on actual droplet sizes,
Lechler's focus on precision and accuracy
distinguishes itself from competitors. In addition,
Lechler is the only spray nozzle manufacturer
that provides chevron-type mist
eliminators. Today, Lechler offers an array
of standard and custom nozzles that produce
the smallest droplet sizes, create the
narrowest droplet size distribution, has the
largest free passages and capacities, generates
the most spray impact, and delivers
very short residence time leading to a
smaller vessel volume resulting in lower
fabrication and structural costs.
Each year, Lechler invests a significant
the biggest droplet sizes to minimize droplet
entrainment.
Lechler has more than ten full cone nozzle
designs that excel in one of the above
attributes. Such a level of design variety
enables Lechler to select the most optimum
design and nozzle size to achieve the
best performance. Poorly selected nozzles
can lead to millions of dollars in unrealized
potential and cause thousands in damage
from unplanned outages and downstream
equipment for companies. For example,
a more efficient dual fluid nozzle requires
portion of revenue in R&D and new product
development to stay at the forefront
of nozzle technology and deliver cuttingedge
performance to its customer. Lechler
is proud to have built the most modern and
technologically advanced spray testing lab
at our headquarters in Metzingen, Germany.
This lab is our bedrock for innovation. Our
customer also benefits from our lab as they
can easily order tests on any nozzle of their
choosing to measure precise droplet size,
pressure vs volumetric flow, spray distribution,
and spray impact.
Today, Lechler is focusing on developing
products and services for Oil and Gas and
Specialty Chemical industries in the areas
of enhancing mass transfer in open spray
towers, improving absorption and quench
units, high performance tank cleaning spray
nozzles, and injectors to delivery liquid in
process streams.
www.lechlerusa.com
Inline high shear mixers that induct powders,
homogenize and pump
Ross SLIM Technology employs high shear for rapid and complete mixing of powders into
liquids, avoiding agglomerates and dust formation
he Ross Solids/Liquid Injection Manifold (SLIM) is a technology
for dispersing challenging powders such as thickeners, pigments
and other additives using a specially modified high shear
rotor/stator generator.
In an inline configuration, the SLIM mixer pumps liquid from the
recirculation tank while simultaneously drawing powders from a
hopper. As the liquid stream enters the rotor/stator assembly, it immediately
encounters the powder injection at the high shear zone.
The mixture is then expelled through the stator at high velocity
and recirculated back into the tank. In a few short turnovers, solids
are completely dissolved or reduced to the desired particle size
(deagglomerated).
This method for high-speed powder injection is ideal for dispersing
small concentrations of hard-to-wet solids like CMC or xanthan
gum (>5%). It is equally effective for solid loadings as high as
70%, as in the case of some titanium dioxide or magnesium hydroxide
slurries. By introducing solids sub-surface where they are
instantly subjected to vigorous agitation, issues like floating powders,
excessive dusting, and formation of stubborn agglomerates
" fisheyes " are eliminated. Because the SLIM generates its own vacuum
for powder induction and does not rely on external eductors or
pumps, it is free of clogging and simple to operate.
56
T
Options include automated skid packages where the SLIM mixer
is piped to a jacketed tank and supplied with flow meters, load
cells, solenoid valves, level sensors and thermocouples all integrated
into a PLC recipe control panel. The SLIM technology is available
in batch (in-tank) design as well.
Pictured are two 25 HP ROSS SLIM Model HSM-405SC-25 with a
NEMA 4 Class II, Div. 2, Group
G purged control system programmed
to operate both the
mixer and the pneumaticallyactuated
1.5 " powder feed
valve, managing the flow of
the dry phase (powder feed
hopper not shown).
Established in 1842, Ross
is one of the world's oldest
and largest manufacturers of
process equipment, specializing
in mixing, blending, drying,
and dispersion.
www.mixers.com
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
APRIL 2023
http://www.lechlerusa.com http://www.mixers.com http://WWW.CHEMENGONLINE.COM
Chemical Engineering April 2023

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