Coffee beans are decaffeinated using an extraction process. Decaffeination is a process by which the caffeine contained in coffee beans is partially or almost completely removed by suitable solvents. Residues of the solvent used escape during roasting of the coffee beans.
In this process, coffee beans pretreated with steam are flushed with supercritical CO2 or propene at a pressure of 70 to 300 bar and the caffeine is dissolved in the fluid phase. The solvent is allowed to evaporate, leaving behind the pure caffeine. The solvent is recompressed and reused.
|Medium: Carbon Dioxide (CO2), C3H6|
|Discharge pressure: 60 – 350 bar|
|Power: 5 – 22 kW|
|350 MKU 02|