The Super Critical fluid technology is a new-type separation technology in modern chemical separation. The Super Critical extraction takes CO2 as the solvent. As CO2 fluid under super critical state has larger density and dielectric constant, larger dissolvability against substances, which can change abruptly when pressure and temperature change therefore it has not only the selection of dissolvability against some substances, the separation of the solvent with the extracted substances is also easily. The super critical CO2 extraction is specially suitable for extraction of fat-soluble and heat sensitive substances with the high boiling point, and is suitable for fine separation of different components, i.e. Super critical fine distillation.
Take CO2 as the solvent to make extraction and purification upon a lot of products such as biological production, foodstuff and medicines.
Part List of Super Critical CO2 Extraction Machine
The device mainly consists of extraction kettle, separation kettle, fine distillation column,CO2 high pressure pump, entrainer pump, refrigeration system, heat exchange system, purifying system, pressure stabilizing system of extraction kettle, CO1 tank, flow meter, temperature and pressure control (protection) system etc.
Extraction Kettle: 0.5L, 1L, 2L, 5L/50Mpa, 10L, 24L/40Mpa, 50-200L/32Mpa,dual purpose for solid and liquid, equipped with water jacket for circulated heating with adjustable temperature.
Separation Kettle: 0.3-10L/30 Mpa, 50-100L/16-22Mpa, equipped with water jacket for circulated heating with adjustable temperature.
Fine Distillation Column: Inner diameter 25mmx2-3m/30Mpa, 35mmx2-3m/30Mpa, 48mmx4-6m/30Mpa. 78mmx4-6m/30Mpa, according to technological requirement, 4-section, 6-section,8-section temperature control are available and relative stuffing can be selected and loaded by customer according to technological requirement.
High pressure pump: 20L/40Mpa.h double-plunger, 50L/50Mpa.h double-plunger frequency-modulating, 400L/40Mpa.h three-plunger frequency-modulating, 800L/40Mpa.h three-plunger frequency-modulating, the pump head with cooling system.
Take Pump: in the course of extraction, the entraner is used to change polarities of CO2 so as to extend range of application.
Cooling System: equipped with semi-sealed or full-sealed compressor to meet technological requirement.
Heat Exchange and Temperature Control System: According to technological requirement, the heat exchange and temperature control system are equipped for extraction kettle, separation kettle and fine distillation column respectively to control the temperature of water circulation at -85 degree and the temperature of oil circulation at -150 degree; the digital display double-screen is used to control the temperature of water bath and to measure the temperature of CO2 fluid with the accuracy of temperature control at ±1 degree.
Pressure Control(Protection): equipped with the electro connecting pressure gauge at the outlet of the high pressure pump and set the working pressure to release pressure and make automatic protection in case overpressure occurs; equipped with safety valves for high pressure pump, extraction kettle, separation kettle, fine distillation column according to their maximum working pressures to release pressure and make automatic protection in case over pressure occurs; equipped with back-pressure valve system at the outlet of the extraction kettle which has stable pressure and is easy to make adjustment. The control accuracy of pressure(dynamic) is±0.1 Mpa.
Display of Flow: the metal rotor flow meter with remote transferable digital display for instant flow and accumulated flow respectively.
Pipe lines: all containers, valves, pipe fittings and pipelines contacting with fluid are all made of stainless steel.