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
Como funciona
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.
Especificações técnicas
Especificações
Características principais
Aplicações
Setores
Limpeza e manutenção
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.
