Since 1989, BIT has been engaged in the design and production of supercritical co2 extractor
Four Things Before Buying a Supercritical CO2 Extraction Machine
As you can imagine, not all supercritical CO2 extractors are made the same. Because each customer’s CO2 extraction process requirements are different, there are almost no identical machines.
Now, you also have a professional 30+ supercritical co2 extraction team.
Three Types of Supercritical CO2 Extraction Machine
Freely customize supercritical CO2 extraction systems:
Extraction pressure: 35MPa-105MPa;
Extraction capacity: 10mL-9000L.
- Laboratory scale CO2 extractor 100mL-1000mL;
- Pilot and production scale CO2 extraction equipment 20L-180L;
- Industrial-scale CO2 extraction system 200L-9000L;
Supercritical fluid fractionation column with corresponding capacity can be customized.
Four things before buying a CO2 extraction machine
As you can imagine, not all supercritical CO2 extractors are made the same. For more than 30 years, we have customized many CO2 extraction machines for many companies and university laboratories. Because each customer's CO2 extraction process requirements are different, there are almost no identical machines. The materials and technology used to make a CO2 extraction machine can contribute to the quality of the machine itself, and how effective that particular machine is for your intended purpose.
Thing 1#: CO2 Extraction Vessel Capacity
The first factor that determines the size of the CO2 extraction vessel is the daily working hours of the plant, which determines the daily extraction batch. It is important to choose the right vessel size that will meet your current needs as well as future demand. Most extractors are expandable but require downtime and additional investment. A smaller system will come with a 5 L vessel, which will process about 2 1/2 pounds per run with eight runs per day. After a 5 L vessel, the size jumps to 20 liters, which will process 10 pounds per run with six runs per day. From 20 Liters, you can obtain 40, 60, 100, and beyond. After 100 liters, you will be installing industrial size equipment with virtually limitless volume production.
How much biomass will you process per day?
This ties directly back to the correlation between footprint and extraction throughput.
The fact of the matter is that extractors vary greatly in their processing capabilities. A supercritical CO2 extractor can range from a biomass processing capability of 0.1 pounds all the way up to 1000 pounds and beyond.
How many extraction vessels will be used?
Supercritical co2 extractors can have three structural forms, single extraction vessel, double extraction vessel, and triple extraction vessel.
- Single extraction vessel: This structure is usually used for laboratory or home extraction (small co2 extraction machine). If we extract a batch of CBD oil for 2 hours, the CO2 extractor with a single container structure needs a minimum of 3 hours, because it requires additional equipment. loading and unloading process. At the same time, after the extraction process, the CO2 gas in the container must be discharged into the air, which wastes a part of the gas(small CO2 extraction machines are usually not equipped with a CO2 recovery system).
- Dual extraction vessel: Commercial CO2 extraction machine. Two extraction containers work alternately: one container is extracting, and the other container is resting and waiting after filling.
The CO2 in the container after the extraction work is completed will be transferred to the waiting container, thereby reducing the use of gas and saving the cost of extraction.
Taking the extraction of CBD oil as an example, if each batch takes 2 hours, then 12 batches can be extracted in 24 hours, which is a highly efficient CO2 extraction machine.
- Triple extraction vessels: industrial supercritical carbon dioxide extraction machine. Two extraction containers work, and the third container rests and waits after filling.
Taking the extraction of CBD oil as an example, if each batch takes 2 hours, then 23 batches can be extracted within 24 hours, with high efficiency and high machine cost.
Thing 2#: CO2 Separator (Collection Chambers)
- Waxes separation and Light oil separation in 1st separator
- Light oil separation in 2nd separator
- To trap lightest and volatile compounds in 3rd separator
Once your material has been extracted, it is transferred to the separator (collection chamber). Your collection chambers have a large impact on the quality of your extract. If you have a single extraction chamber you have no ability to obtain multiple qualities or cuts of extract. We suggest a minimum of two to three cascading separators to produce the highest quality extracts. This also gives you the ability to step down the pressure in the system more gradually, which will greatly improve the overall quality.
Terpenes: When choosing your system, it is important to consider terpene retention during the extraction process. You can increase the terpene yield by properly prepping the material and also by adding a vapor condenser or cold trap to the system.
Thing 3#: Extraction Pressure
The choice of extraction pressure is a changing factor. If the extraction pressure is too high, the useless substances in the plant will be extracted, such as wax and chlorophyll. If the extraction pressure is too low, the extraction time will be increased.
Another factor to consider is the pressure rating of the extraction vessel and system overall. Generally, the higher the pressure, the more expensive the unit will be. You can purchase a system at the lower end of the supercritical curve around 350 bar or as high as 1050 bar. It is important to note that the larger volume systems become exponentially more expensive with higher-pressure ratings. Depending on your extraction technique, a lower pressure system might be completely adequate. There are two different camps for selecting pressure. Some people think that the lower the pressure the better because there is less impact on the organic compounds but others think higher pressure is better because it ruptures the cell wall more efficiently.
Thing 4#: CO2 recovery system
When we extract material, some CO2 gas is lost. The proportion of loss is about one-third of the material. If you choose an extraction vessel of 30L or less, our recommendation is to ignore these gases, they are not worth the increased investment in a gas recovery system. But when the container is larger than 30L, we need a system to recover the CO2 gas in the extraction container, we call it CO2 recovery system.
It will reduce the cost of extraction and ensure the safety of the extraction space. After all, the extraction operator cannot survive in the space full of CO2, especially in the working environment of the industrialized CO2 extraction system.
Read More: Supercritical fluid extraction Wikipedia