Depyrogenation Tunnels

Tunnel Pasteurizers are used for heat treatment of products such as beer, soft drinks and acid preserves (fruits, acidified vegetables or pickles). etc. in closed bottles or cans. The containers are loaded at one end of the pasteurizer and passed under sprays of water as they move along the conveyor belt.

The sprays are positioned so that the containers are subjected to increasingly hot water until the pasteurization temperature is reached by the product in the bottle or can.

The containers are then gradually cooled with water until they are discharged from the end of the pasteurizer. A typical process will include most or all of the following steps:

• Heating zone
• Heat treatment zone
• Cooling zone
• Above zones can be sub-divided into more zonesThe temperature range is typically 60 to 100° C and the length of the process is depending on the container and product.