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Solids Processing 2024 Special Advertising Section
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
T
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.
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 pneumatically-actuated
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
Solids Handling - Tailored solution for every challenge
S
olids handling in upstream, also known as sand treatment in
the industry, has the goals to recover as much liquid (usually
water) as possible for reuse as well as get the solids into a state
that can be safely and easily disposed. In chemical and petrochemical
processing, solid handling technologies are applied to
ensure easy-to-handle solid products that are ready for sale or
further processing, and clean process liquid that can be
reintroduced into production processes.
Various sand handling technologies include sand jetting
system, sand removal cyclones (SRC) and desanding
hydrocyclones (liners):
* Sand jetting systems is the fluidization of solids by injecting
water spray and simultaneously draining the slurry.
* Sand removal cyclones (SRC) is the fluidization of solids by
injecting water vortex and simultaneous suction of the slurry in
the vortex. The SRC system can also be installed in combination
with a sand jetting system to minimize the water consumption
and to increase the solids removal efficiency.
Desanding hydrocyclones (liners) utilize gravitational forces
for enhanced solid-liquid separation. The installation of Sulzer's
desanding hydrocyclones allows significant reduction of the size
of gravity settlers, potentially eliminating the use of centrifuges
typically installed for suspensions treatment, hence avoiding the
hazards and maintenance associated with these equipment.
Sulzer Chemtech provides a wide range of solids handling
solutions for upstream, refineries and chemical processing
industries to optimize their processes as well as meet environmental
regulations. They can be configurated to achieve reliable
guaranteed performance in challenging and demanding
applications. These solids handling technologies were proven
under real field conditions and have been successfully applied in
both new processes and revamps of production facilities. The
automated sand separation, treatment and handling process
minimize the accumulation of solids, which will adversely affect
oil production over time. Advanced application knowledge
together with efficient supply chain results in tailored solutions
from Sulzer Chemtech for every challenge in solids handling.
www.sulzer.com/chemtech
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM APRIL 2024
53
http://www.mixers.com http://www.sulzer.com/chemtech http://WWW.CHEMENGONLINE.COM
che_april-2024

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