Abstract:

In order to predict and simulate the course of the supercritical carbon dioxide extraction process, a mathematical model was developed by using the lumped parameter method to describe supercritical carbon dioxide(SC-CO₂) extraction of clove oil based on the mass balances of essential oil in particle and SC-CO₂. The model was simplified according to experimental results at various temperatures, pressures, particle sizes and CO₂ flow rates. The coefficients of carbon dioxide density, particle size and CO₂ flow rate in the model were calculated and tested experimentally. The simulated results showed that the model gave a good fit to the experimental data with average relative error of 6. 88%—57. 78%.