SED-100YDZ-A — Liquid Nitrogen Cryo-Pelletizer
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SED-100YDZ-A liquid-nitrogen cryo-pelletizer (capacity 100 kg/h, Ø500 mm tank). Pre-freeze step before lyophilization: liquid culture is dripped through two feed tubes into the pelletizing tank and frozen within seconds
Fonctionnement
Liquid feed enters via two feed tubes that drip-form droplets into the pelletizing tank. Droplets cryo-freeze instantly in liquid nitrogen (-196°C) inside the conical-bottom tank. An electric agitator keeps liquid nitrogen circulating to prevent pellet agglomeration and gas-blanket isolation, ensuring pellet-to-LN2 contact. A LN2 supply valve and level controller hold the LN2 level. Density difference causes frozen pellets to sink to the cone bottom, where a screw conveyor lifts them out into an insulated collection vessel for cold-room storage. Ventilation maintains slight negative pressure inside the freeze tank to prevent nitrogen leakage.
Caractéristiques techniques
Caractéristiques
Caractéristiques principales
Applications
Secteurs
Nettoyage et entretien
Feed device and screw discharger are removable for separate cleaning and sterilization. CIP option: insert spray nozzles where feed device and screw discharger were removed.