SIMEC - Model HZG -Single Layer Drum Dryer

Thermostatically controlled discharge air temperature assures precise final moisture and allows sensitivity to varying product conditions.

We also have extinguish system and anti-explosion system on our dryer.

Structure of single layer drum dryer is not so complex as triple layer design.  After the wet material is taken into the dryer through inlet, it is turned over by the string-up rake inside the drum and distributed uniformly in the dryer for full contact with the counter-current hot air. It speeds up the heating and mass drying process. While drying, raw material is moved by stirring rake with a gradient of hot air. It passes through the drying region to a star valve which discharges the dry material.

Automatic Sprinkler for Fire-Prevention in Drying System

Function: quick start in case of self-combustion of material and extinguish the fire.
The alarm & auto-sprinkler system should be equipped in front end of drying drum in order to improve safety performance of drying system, and prevent fire.

Design specification for SIMEC dryr’s saftey operation:

• Anti explosion
  Our design is to use the rupture disk to prevent the damage of dryer in case of explosion or pressure rise. Below there’s a sample image for the rupture disk.
  The rupture disk is suitable for gas media. In case of explosion, there’s no sparks, no sharp pieces.
  On the rupture disk there’re holes and cracks to reduce the strength. When the protection system is overpressure, the rupture disk will break along the cracks and holes to release pressure. Rupture disk will be connected with L type pipes. In this case, the air flow direction will be changed.
• Sprinklers (in the first part of the dryer) to allow for prompt stoppage of self-combustion of material.