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Technical Manual of 1L Supercritical CO2 Extraction Equipment

1L Supercritical CO2 Fluid Extraction Equipment


Supercritical CO2 Fluid Extraction Equipment is a 1L/50Mpa one-extraction two-divided CO2 circulation type, which is used for material extraction (solid or liquid) under high pressure and suitable temperature.

The conditions are changed in the separator to dissolve the dissolved substances to achieve the purpose of separation.

1L Supercritical CO2 Fluid Extraction Equipment
1L Supercritical CO2 Fluid Extraction Equipment

The device is mainly composed of: extraction kettle, separation kettle, CO2 high pressure pump, entrainer pump, refrigeration system, CO2 storage tank, heat exchange system, purification system, flow meter, temperature control system, and safety protection device.

Auxiliary equipment and systems can meet the requirements of the supercritical extraction system and flow chart requirements.

System composition

Supercritical CO2 Fluid Extraction Equipment is mainly composed of the following parts:

Extraction system

Including extraction kettle, heat exchanger, heating bath, temperature control, safety protection, pressure test, etc.

Separation system

Including separation kettle, heat exchanger, heating bath, temperature control, safety protection, pressure test, etc.

Pressure system

Including liquid CO2 pump, cold water circulation, safety protection, electrical contact protection, pressure test, etc.

Regulator system

Including filters, back pressure valves, etc.

Liquid CO2 generation system

Including refrigeration unit, liquid CO2 storage tank, gas-liquid separator, pressure test, etc.

Cosolvent system

Including entrainer pump, entrainer addition tank, entrainer flow meter, etc.

CO2 circulation system

Mixer, purifier, liquid CO2 flowmeter, etc.

System advantages

  • Integrated system of the entire system is designed to facilitate the operation of the system. The appearance is beautiful, the noise is low, and the operation is convenient.
  • The liquid CO2 booster pump is a three-piston reciprocating pump with a maximum output pressure of 50 MPa and a maximum flow rate of 50 L/h. The pump head contains a cooling system and is equipped with an infinite frequency converter for frequency conversion.
  • Heating method adopts the hot water circulation method, and the temperature control system adopts PID self-tuning, thereby improving the accuracy of temperature control and reducing the noise. The temperature control probe is set inside the kettle body and the temperature control is more accurate.
  • Equipment safety has triple protection, the pump outlet has an electrode voltage meter to control the maximum pressure, and the over pressure stops the entire system; the pump, extraction kettle, and separation kettle are equipped with safety valve automatic pressure relief; temperature control instruments, automatic over temperature stop The system has leakage protection.

Technical parameters

  1. Maximum working pressure: 50 MPa;
  2. Maximum working temperature: 85°C;
  3. Extraction kettle: 1L, 1 set;
  4. Separation kettle: 0.6L, 2 sets;
  5. Automatic temperature control: PID self-adjustment, error ± 0.5 °C;
  6. Working voltage: 380V/50HZ;
  7. Power consumption: 10KW, normal use of 5KW;

Composition and description of components

Extraction kettle

  • With water jacketed circulation heating system, adjustable temperature, with solid, liquid material barrel
  • Material 0Cr18Ni9
  • Volume 1L
  • Maximum working pressure 50MPa


  • With water jacketed circulation heating system, adjustable temperature
  • Material 0Cr18Ni9
  • Volume 0.6L set
  • Maximum working pressure 30MPa

CO2 high pressure pump

  • Flow rate (three plungers) Maximum displacement 50L/h Variable frequency adjustable
  • Maximum working pressure 50Mpa, pump head with cooling system

Entrainer pump

  • Flow rate (double plunger) 1/4-4L/h mechanical adjustment
  • Maximum working pressure 50MPa

Refrigeration system

  • Cooling capacity 5100Kcal/h Air cooling
  • Temperature control range -5 °C ~ +5 °C to meet the process requirements

Heat Exchange System

  • Material 0Cr18Ni9
  • Specification Φ6×1 coil
  • Maximum working pressure 50MPa
  • Water jacketed circulating heating system, adjustable temperature

Purification system

  • Material 0Cr18Ni9
  • Maximum working pressure 50MPa

CO2 storage tanks

  • Material 0Cr18Ni9
  • Volume 4L
  • Maximum working pressure 16MPa


  • Specifications Metal tube float flow rate display remote transmission; display instantaneous and cumulative flow, respectively

Temperature Control System

  • Control range Adjustable from room temperature to 85°C (water bath)
  • Dynamic temperature control accuracy ±1°C digital display dual screen

Safety protection device

  • High-pressure pump outlet distribution contact pressure gauge, set working pressure, automatic over-pressure pump protection.
  • Extracting kettle, separating kettle, high pressure pump, according to the maximum working pressure, respectively equipped with safety valve, automatic pressure relief pressure.


  • Valves, fittings: DW6; containers, valves, fittings, and pipes that contact fluids are made of 0Cr18Ni9 stainless steel. The stem of the valve is specially heat-treated for durability.

Features of the instrument

  • The extractor pressure ring opens quickly.
  • CO2 recycling.
  • Extraction tank pressure regulator using imported back pressure valve, the pressure is stable and easy to adjust.


  • Power supply: Three-phase four-wire system 380V/50HZ 10Kw
  • CO2: food grade ≥99.5%, single bottle net weight≥22Kg
  • Installation size: 2500×2000×1800m/m, additional operating space.

Equipment shape reference map

1L Supercritical CO2 Fluid Extraction Equipmen flow diagram
1L Supercritical CO2 Fluid Extraction Equipmen flow diagram

Main equipment configuration list

NOPart NameParts Description
1Extraction kettleWith water jacketed circulation heating system, material: 0Cr18Ni9,Adjustable temperature, with solid, liquid barrel, volume: 1L,Maximum working pressure: 50MPa, maximum settable temperature: 85°C1 set
2SeparatorWith water jacketed circulation heating system, adjustable temperature,Volume: 0.6L, material: 0Cr18Ni9,Maximum working pressure: 30MPa, maximum settable temperature: 85°C2 sets
3Liquid CO2 high pressure pumpForm: three plunger, pump head with cooling system, maximum flow: 50L/h,Variable frequency adjustable (with frequency converter), maximum working pressure: 50Mpa,1 set
4Entrainer pumpForm: double plunger, maximum flow: 4L/h, mechanical adjustment,Maximum working pressure: 50Mpa,1 set
5Cooling SystemCooling capacity: 5100Kcal/h, air-cooled,Temperature control range: -5 °C ~ 5 °C, to meet the process requirements,1 set
6CO2 storage tankWith water jacket cooling cooling system, material: 0Cr18Ni9,Volume: 4L, Pressure: 16MPa1 set
7Heat ExchangerMaterial: 0Cr18Ni9, Specification: Φ6×1 coil,Maximum working pressure: 50MPa, circulating jacket heating system,3 sets
8filterWith inner liner into desiccant, material: 0Cr18Ni9,Volume: 0.2L, pressure: 50MPa1 set
9Gas-liquid separatorInto the next up and down, material: 0Cr18Ni9, volume: 0.2L, pressure: 50MPa1 set
10mixerZR-I type, material: 0Cr18Ni9, volume: 0.2L, pressure: 50MPa1 set
11Liquid CO2 flowmeterForm: Metal rotor flowmeter, measuring range: 6.3-63L/h,Pressure resistance: 10MPa, digital instantaneous and cumulative flow,1 set
12Entrainer flowmeterForm: Glass float flowmeter, measuring range: 0-20L/h,Pressure resistance: normal pressure, glass scale direct reading1 set
13Heated water bathControl range: adjustable from room temperature to 85°C (water bath)Dynamic temperature control accuracy: ± 0.5 °C, digital display dual screen, computer acquisition3 sets
14RegulatorBetween the extraction and separation, control the extraction pressure,Pressure control range: 0~50MPa, imitating imported back pressure valve1 set
15Precision pressure gauge16MPa,40MPa,60MPa5 sets
16Electrode pressure meter60MPa1 set
17Safety protection deviceThree-fold protection of safety valves, smart meters, and electrode voltage meters4 sets
18Fittings, fittings, common pressure gauges, etc.DW6, DW10, Pressure: 50MPa, Material: 0Cr18Ni91 set
19Overall bracketAnd control boxSpray treatment, configuration cylinder holder and cylinder heating jacket1 set
20Random AccessoriesSeals, pipe valves, connectors, special tools, etc.Batch 1

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