Tunnel sterilizer DHT

processhot airfor the pharmaceutical industry

The sterilizing tunnels of the DHT series dry, sterilize and depyrogenize glass containers using a low-turbulence vertical air flow. The sterilizing-grade filters or integrated high-efficiency particulate air filters (HEPA filters) do not require any sealing on the air discharge side. Special hot gas filters in the sterilization zone produce a cleanroom class A atmosphere in all operating conditions (even during the pre-heating and cooling phases). The tunnels have multiple insulation layers to prevent heat loss and maximize energy efficiency. • Low-turbulence, vertical air flow for optimal heat transfer • Precise maintenance of production parameters • Gentle container heating • High energy efficiency • B+S hot gas filter with long filter life • Easy and centralized operation • Pharmaceutical design • Transverse conveyor belt with transfer mechanism for stable containers at the tunnel infeed • Heating timer for pre-heating prior to operation • Cleanroom partition • Special Bausch+Ströbel hot air filters in the pre-heating and cooling zones • Vane wheel anemometers for air velocity measurement in the pre-heating, sterilizing and cooling zones, with display on the operating panel or recording on a multichannel process recorder • Equipment to monitor the differential pressure between the cleanroom and the cooling zone • Equipment to monitor the max. dwell time of the containers in the high-temperature environment, with discharge of processed containers to the machine downstream (DHT 4432/DHT 5732/DHT 5764) • Heat exchanger (for cooling the circulating air in the cooling zone)