-
Capacity up
to 4 Liters
-
Pressures up
to 10,000 psi (68.9 MPa)
-
Feedback
Control: PID-Fuzzy Logic Controllers
-
Various
Extract Collection Options
-
Mixing
Options Available
-
Optional
Co-Solvent Addition Module• Fluid Preheater
-
Easy to
Upgrade System for New Applications
-
Maintenance
Free Operation
Click here
to download a printable version of the
SFT250 spec
sheet in PDF format.
The
SFT250 SFE/SFR Processing System is designed to perform extractions and run
reactions in a supercritical fluid media. This system was engineered to meet the
day-to-day rigors of the research laboratory and may be used for small scale
pilot processing. The SFT250 is simple to operate, easy to modify for evolving
application needs, and features many of the performance characteristics of fully
automated pilot scale systems. The SFT-250 offers the maximum flexibility and
safety features of any laboratory supercritical fluid extraction/reaction
instrument available in the market today.
|
SFT-250 SFR with
high
pressure mixing capabilities |
At the
heart of the SFT250 is a stainless steel vessel capable of containing
supercritical fluids at pressures up to 10,000 psi. (68.9 MPa). The SFT250
accommodates pressure vessels of up to 4 liters in size. The large vessel
enables the user to extract very low levels of key components from materials or
process larger amounts of bulk material than would be possible with
conventional, analytical scale SF equipment. Additionally, the SFT250 may be
configured with multiple vessels which may be operated simultaneously, either in
series or in parallel. Vessels are easily interchangeable and may be installed
readily by the user.
The
SFT250 incorporates a high performance, air driven pump which can rapidly
produce the high pressures required for supercritical fluid work. Under typical
operating conditions, flow rates range from 1 to 330 ml./min. (250 grams/min.)
of liquid CO2. Conveniently located front panels allow easy access to the
pressure vessel, valves, fittings, and electronics. Manually actuated valves
provide long term, maintenance free performance.
Safety is
of primary importance in all SFT250 systems. Electronic alarms alert the end
user to potential over-temperature and over-pressure conditions. As an
additional safety precaution, rupture disc assemblies provide mechanical
protection against over-pressurization of the system.
A robust,
variable restrictor valve (back pressure regulator) provides precise control
over flow rates. This level of control is essential when it is necessary to
achieve highly reproducible results from run to run. While carbon dioxide is the
most commonly used solvent, the SFT250 allows the user flexibility to work with
a variety of supercritical fluids. The extract collection options include solid
phase extraction (SPE) cartridges, solvent filled vessels, EPA vials, and
fractional cyclonic separators. Extract is collected outside the main cabinet,
to provide ready access for the user and simplify interfacing the SFT250 to
other instrumentation such as an FTIR or Mass Spectrometer. Additional
collection options are available. The standard setup is for collection into EPA
vials.
The
SFT250 is controlled by PID controllers. These manage pumping rates, pressures,
temperature zones, mixing, and safety interlocks.
