Supercritical CO2 Extractor

A friend of mine was involved in a CBD hemp business and told me about a machine they were planning on buying which would extract oils and medicinal compounds from the plant material. I offered to build one for them instead, and this was the result.

IMG_8936_Original (2)_edited.jpg

I built this supercritical CO2 extractor from scratch for about $30,000 total. It has the same processing capacity as a similar commercial extractor starting at $145,000. The operating pressure is 3,000psi. A five gallon bucket of crude plant extract could be produced about once per week. 

IMG_1911.jpg
61515803063__26D3FF6D-5666-4616-ABB2-6D89C72EFC37.jpg

Pictures of the main pressure vessels and the crude extract

CO2 was pumped from 600psi in the low pressure separators to 3000psi in the main extraction vessels using a gas booster powered by a very large air compressor outside.