Extraction - Solid/Liquid Extractor
A complete teaching system
with comprehensive experiments, data analysis, tutor's and student manuals
if desired, and all instruments and controllers.
- Batch or continuous operation
- Solvent extraction/leaching
operations can be studied
- Custom designed for technician/undergraduate
teaching
- Complete visual monitoring
of the process
- Easily operated and used
- No further development
work necessary
- Suitable for project or
research work
Specification
A QVF solid/liquid extraction
teaching system module comprising a 5 liter nominal capacity extraction
chamber, 20 liter solvent recovery boiler, 80mm diameter jacketed column,
solvent condenser and cooler all manufactured from borosilicate glass.
Batch or continuous operation with controllable solvent flow rate and
flow direction through the solids' bed. Supplied with all valves, controllers,
instrumentation, service lines and supporting structure. Complete with
an installation and maintenance manual and tool kit.
Experimental Capabilities
- The effect of solvent
flow rate on the extraction rate
- Determination of extraction
efficiency
- The effect of solvent
flow direction on the extraction rate
- Determination of the number
of theoretical stages using triangle diagrams
- Mass balances
The experiments use the extraction
of palm oil from palm kernels with perchloroethylene. Other systems
can also be investigated.
The experiments are also
designed to provide training in chemical plant control and operation.
Optional Manuals
The equipment can be supplied
with the following manuals:
Tutor's manual: The
basis of a lecture course on extraction theory and practice. Also including
operating instructions, experiments, typical results and answers to
student questions.
Student manuals provide
the basics of extraction theory and practice with plant operating instructions.
Experiment booklets
provide step-by-step instructions for performing the experiments, data
to be recorded and questions to be answered.
Additional copies of the
student manuals and experiment booklets can be reordered.
Description
The plant is fitted with
an external steam or electrically heated thermosyphon reboiler. Pure
solvent vapor generated in the boiler rises through the jacketed column
and is condensed in a vertical water-cooled condenser. Liquid solvent
passes through a solvent cooler which controls the solvent temperature
- a flow rate indicator and into the extraction chamber. The solvent
is directed either upward through the solid bed or downward through
a sparge ring. The extract solution passes into the reboiler where pure
solvent is regenerated.
Samples of extract solution
and reboiler contents can be taken and their compositions determined
by density measurement.
Plant operation is controlled
from a free-standing control panel fitted with a mimic diagram, flow
controllers, temperature and pressure indicators and services controllers.
All major process items and
pipework are manufactured from QVF borosilicate glass with other contact
parts in Nylon, PTFE and stainless steel.
Options
Either steam or electric
heating.
Electrical System: The
electrical system can be designed to meet your local requirements.
Equipment Specification
- Extraction Vessel: 225mm
dia x 5 L capacity
- Condenser: 100mm dia x
0.5ft.2
- Cooler: 40mm dia x 0.2ft.2
- Boiler: 750mm dia x 0.5ft.2
(steam)
- 6kW type 316 SS immersion
elements (electrical)
- Safety: Element temperature
sensor, zener barriers (intrinsically safe electricals)
Installation and maintenance
manual provides detailed instructions on installing and maintaining
the plant.
Instrumentation
- Water: Control valve,
pressure gauge
- Steam: Reducer, control
valve, pressure gauge
- or Electricity: Phase
angle thyristor power controller
- Process: Temperature indicator,
solvent flowmeter
Utilities Requirements
- Steam: 35 lb/hr at 3.5
bar Q
- Water: 6kW, 220/2240V,
single phase 60Hz
- Vacuum: 500 L/hr at 1
bar g
Space Requirements
(height x floor area)
5.0 x 2.5 x 1.0 meters
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