Dual-Frequency Reactors

The Dual-Frequency ReactorsTM (aka DFR)
We package our Dual-Frequency Processing Technology into a wide variety of equipment configurations. We offer many standard product groups packaged with f2 Technology. We also offer the ability to activate  a unique system for your particular processing/installation requirements.

Our Dual-Frequency Reactors are built with opposing bi-frequency sound sources. The synergy created by directly opposing transducers driven at different frequencies dramatically enhances the liquid/solid interface dynamics. The sound field's uniformity delivers effective and efficient ultrasonic treatment for all material passing through the reaction cell.



Advanced Sonics is proud to show a typical 100 kW Dual-Frequency Reactor.

This system consists of (4) DFR-9624 Reactors, each with 24,000 Watts of ultrasonic power.
This system has been built for processing a continuous flow with a 100% duty cycle.  Our Reactor
construction techniques along with choice components offers our customers Ultrasonic
Processing Equipment with ZERO Maintenance.



Dual-Frequency Reactor



The Dual-Frequency Reactor, M/N: DFR-2208-TC, is a dual-
frequency ultrasonic reactor with variable power.  The DFR's
parallel diaphragm plate configuration focuses the ultrasonic
energy on the process stream that flows between these acoustically
energized surfaces.  The energy within the acoustic cavity produces
drastic process rate changes and quality enhancements with
difficult processing tasks.  



The DFR System consists of two major components, with one being
the ultrasonic reaction vessel and the other being the ultrasonic power
source, (generators that convert 50/60 Hz energy to higher frequencies).

The Dual-Frequency Reactor's reaction vessel consists of opposing 
diaphragm plates driven by two different frequencies, (16 kHz & 20 kHz).
The diaphragm plates form two of the walls of the reaction vessel.
Within the reaction chamber, the two different frequencies eliminate
standing waves, (aka intensity stratification).  The wave phenomena
that is created generates intense rarefication and compression sites
due to the combined energy from the two diaphragm plates.  The 
intense ultrasonic energy harnessed within the chamber creates the
ability to accelerate reaction rates and mix products into the submicron
particle size domain.  The ultrasonic cavitational field's intensity is
adjustable to meet your application power requirements.

The Dual-Frequency Reactor provides maintenance free, continuous 
operation.  The unit will handle large volumes of materials without any
degradation to the ultrasonic processing performance.  The plumbing
connections allow for easy installation into a process stream.  The
DFR Reactor can be used in a continuous open/closed loop operation
or as a batch processing cell.  The use of different spacers allows the
DFR Reactor to be configured to optimize the processing requirement.


The Dual-Frequency Reactor, M/N: DFR-5218 provides an intense
and uniform ultrasonic energy profile.  The uniform acoustic field is
ideal for enhancing liquid/solid surface hydrodynamics along with
accelerating sonochemical reactions.

The DFR consists of two separate ultrasonic Diaphragm Plates driven
at 16 and 20 kHz.  The Dual-Frequency Reactor has the transducer 
diaphragm plates opposing one another to maximize the Nearfield
effect delivered by the system.  The Nearfield effect is the intense
acoustic energy delivered to your process solution/material which
is located within one wavelength of the acoustic resonating surface,
(approximately 3" for aqueous based solutions).

Each diaphragm Plate section has a maximum power of 2,000 Watts.
Each frequency on the DFR-5218 has (5) Diaphragm Plate sections
for a maximum ultrasonic power level of 10,000 Watts.  The entire
DFR-5218 system has a maximum ultrasonic power level of
20,000 Watts.

Process Scale-Up: The result received from analyzing the various
process parameters is most useful for process scale-up.  Our DFR
Processing Technology allows the process to be scaled up without
diminishing processing results.  With the optimum system configuration
determined, scale-up may be as simple as a linear relationship.

Please consult Advanced Sonic Processing Systems technical
support staff to discuss scale-up requirements.





June 16, 2010