Core | Counter Current Column
Supercritical CO2 – Liquid Extraction
Multistage fractionation column for the separation of complex natural product mixtures
Hover over the orange circles to learn how our systems work and what each component on the system is used for!
09. Core | MBPR
Whether it be a cyclone separator or a cold trap controlling the pressure inside these vessels can aid in collection or in the case of multi cyclone systems result in selective fraction of the extraction feed. By modifying the pressure and temperature in each separator the density can be accurately control to favour the precipitation of some components over other. The manual back pressure regulators facilitate the control of the pressure in each of the separators.
05. Core | Counter current column
While its important to expand the CO2 into its gas phase in-order for the extracted components to precipitate from the CO2 feed into one of the cyclone separators, the more volatile components can vaporise and escape with the CO2. The addition of a cold trap after the last cyclone can aids in trapping the more volatile components obtained from example terpenes terpenoids.
02. Core | Flow Meter
Addition of a flow meter improves delivery accuracy by adjusting the flow to compensate for changes in the CO2 feed density. Although we control the incoming temperature of the CO2 a drop in pressure from the CO2 bottle as we consume the CO2, can result in a density shift causing the pump to under deliver the CO2 to the process. The flow meter also offers additional process data to be collected in the system, such as total CO2 used.
04. Core | Feed Pump
The use of co-solvent pumps have a number of benefits when incorporated into a system. They allow the introduction of solvent to modify the CO2 polarity. But they can be used for cleaning and the introduction of solutes in the SAS process. The co-solvent pumps like our CO2 pumps have been designed from the ground up. In fact they can be used for both operations with the addition or removal of our cooling cartridges.
01. Core | Condenser
Although we use a liquid CO2 feed in our extraction systems, its important that the incoming CO2 remains liquid. The condenser acts to maintain the incoming temperature of the CO2 ensuring it remains a liquid during the pumping phase. Additional condensers can be added with higher flow rate pumps or the addition of a recycling unit.
03. Core | C02 Pump
Built from the ground up using our extensive knowledge of CO2 processing the Core CO2 pumps are designed for high demand environments such as research and production. Our systems can be built to utilise our wide range of pumps allowing us to achieve flow rates between 5g/min upto 1kg/min.
07. Core | Vaporiser
Joule-Thomson effect is observed when we go from a high pressure to a low pressure resulting in a drop in temperature. To overcome this, we use a Vaporiser to heat the CO2 exiting the ABPR. The vaporiser also helps to expand the CO2 from its liquid state into a gas in-order to help precipitate the extracted components.
08. Core | Cyclones
Offering both double end and single ended cyclone designs using either standard PTFE o-rings or sprung seals our systems can accommodate either multiple cyclones for either single pot collection or multi pot fractionation.
Supercritical CO2 – Liquid Extraction
Counter Current column is a multi-stage liquid-liquid extraction. Unlike their solid liquid counter parts, counter current columns involve continuous separations to produce two feeds, a light soluble fraction and heavy insoluble product
SFX Control Software
When dealing with high pressure systems, pressure control is key. Core Separations developed APC (Advanced Pressure Control). This multilevel PID control achieves superior operational management while maintaining rapid pressure build up.
High Pressure Pumps
Our CO2 pumps are engineered to operate with the highest level of performance and precision. Combined with particularly low maintenance and operating costs, these pumps are well suited for research and manufacturing environments.
CO2 Extraction Vessels
Our EV Series vessels are high pressure, high performance extraction vessels are designed specifically for processing supercritical fluids. These vessels are designed to be easily opened without tools while remaining safe whilst under pressure.
High Surface Area
Columns are packed with a high surface area material desinged to improve mass transfer while offering low resistance to the flow of material. The purpose of the packig is to improve separation by increasing the contact between the CO2 and the liquid feed.
A tempreature gradient is created along the counter current column using 4 heat zones. This gradient alters the CO2 density along the column to allow the spearation process to take place.
The column is joined together with couplers and thread sectionation pieces. This allows the column to be extended to increase the spearation gradient or reduced when height restrictions are present.
The column is rated to 689 bar (10,000 psi) to allow the highest possible density range when separating complex mixtures of natural products.