Decaffeinating with high-pressure technology
Italian company Lavazza relies exclusively on the CO 2 extraction method for decaffeination of coffee . Carbon dioxide in a supercritical state is used and is liquefied by high pressure . Due to its high compressibility , the supercritical aggregate state of CO 2 poses a challenge for process stability . In conjunction with the high tem-peratures and extremely low viscosity of the fluid , the process imposes high requirements on the equipment used . A canned motor pump from serves as the circulation pump . The compact aggregate , including monitoring technology , ensures reliable CO 2 flow through the coffee . Thanks to the low-wear and low-maintenance design principle caffeine can be extracted in 24-hour operation over an extended period of time .
SOURCE : HERMETIC-PUMPEN GMBH