As we all know, the extraction of oil requires process design first, and then the required oil is extracted according to the process flow chart. The subcritical low-temperature extraction process is an innovative oil production technology, and its core lies in making full use of the fat-soluble components in the raw materials. . In a strictly sealed, oxygen-free, low-pressure pressure vessel, we use subcritical fluid as the extraction agent to extract the raw materials.

The subcritical fluids mentioned here specifically refer to those gases or liquids whose temperature is higher than the boiling point of the substance but lower than its critical temperature. In the subcritical low-temperature extraction process, we usually use solvents with boiling points below 0°C such as propane, butane, R134a, and dimethyl ether as extraction agents.

In short, the subcritical low-temperature extraction process is an innovative oil production technology. It uses subcritical fluid as the extraction agent to extract raw materials in a closed, oxygen-free, low-pressure pressure vessel. The entire subcritical low-temperature extraction process mainly includes steps such as extraction, separation and refining.