Crystallizers - Conventional


 

Technically, crystallizers are not dryers. They are used to convert PET from an amorphous, back to a crystalline state for re-processing.

The crystallizer consists of an insulated hopper with an agitator driven by a gear motor and a heater/blower. Amorphous material is loaded into the top of the hopper and is heated to about 180˚ F. while being agitated to prevent agglomeration.

The crystallizing process in a typical crystallizer can be and must be monitored carefully for success. Crystallization may occur in a few minutes up to about an hour, depending on the properties of the material being crystallized. Upon completion, the re-crystallized material, discharged from the base of the hopper may then be transported to a drying hopper where it is dried by a dual bed or desiccant wheel drying system. Then it can be processed into new products.

NOTE: The infrared drying system is a new technology gaining rapid acceptance for crystallizing and drying PET. You can accomplish both operations in one step in one hour with greatly reduced energy usage.

PET Crystallizer System

All rights reserved. Copyright © Gardner Business Media, Inc. 2014 Cincinnati, Ohio 45244