Classification and selection of drying equipment

Classification and selection of drying equipment

The classification and selection of drying equipment are important links in industrial production. The following is a detailed explanation of the principles of classification and selection of drying equipment:

1、 Classification of drying equipment

There are various classification methods for drying equipment, and the following are several common classification methods:

Classified by operating pressure:

Atmospheric drying equipment: adopting one or several forms of simultaneous heat transfer.

Vacuum drying equipment: It mainly uses conduction heat transfer and radiation heat transfer, and is mainly produced intermittently. It mainly processes heat sensitive materials and materials with solvent recovery.

Classified by operation method:

Intermittent operation drying equipment: suitable for materials that require batch processing.

Continuous operation drying equipment: suitable for materials produced continuously, such as tunnel dryers, multi belt dryers, etc.

Classified by the state of the dried material:

The original state of the material, such as block, strip, granular, paste, filter cake, fiber, etc., determines the form of the drying equipment to be selected.

Classified by heat transfer method:

Convection heat transfer drying equipment: such as airflow dryer, Spray Dryer, etc.

Conductive heat transfer drying equipment: such as blade dryer, rotary dryer, etc.

Radiation heat transfer drying equipment: using electromagnetic radiation sources for drying, such as far-infrared radiation dryers.

Classified by the structure of drying equipment:

Spray drying equipment: suitable for liquid materials.

Fluidized bed drying equipment: suitable for granular materials.

Airflow drying equipment: suitable for materials with good dispersion in powder and granular form.

Rotary cylinder drying equipment: suitable for various materials, dried through a rotary cylinder.

Drum drying equipment: suitable for strip or sheet materials.

Box type drying equipment: such as tunnel dryer, multi-layer dryer, etc.