Freeze dryer with sustainable refrigeration technology - CryoBlizzard from HOF

In pharmaceutical production, freeze-drying preserves medicines for years without refrigeration. The refrigeration technology is demanding, as there are specific requirements depending on the manufacturer and medication. After sterile filling, the medicines are placed in vials, which are fed into the freeze-drying system. The medication freezes at between -40 °C and -55 °C on adjustable plates through which a cryogenic special oil flows. A vacuum sublimates the frozen water, which is bound at -80 °C in the ice condenser. The vials are then sealed and the granules can be stored without refrigeration. In Marburg, freeze dryers are used that operate without direct emissions and with air as a refrigerant. Optimised operational control, central refrigeration supply and improved waste heat utilisation ensure low energy requirements and greater efficiency, which supports the company's sustainability goals.