Liquefied Gas Extraction

Food-grade butane in a supercritical, low-pressure, liquefied gas extraction procedure has also been described for oil extraction from peanuts (21). The extraction process consists of mixing the liquefied butane with the material to form a slurry. The liquefied gas and oil are moved to a solvent recovery system where the oil is removed from the butane. The oil is pumped from the solvent recovery system to a holding tank, and the butane is then transformed into a gas in the solvent recovery system and transported back to the butane storage tank for reuse. 

---