Drum Dryer

Drum Dryer

Features:

1. High thermal efficiency. Because the heat transfer mechanism of drum dryer is heat conduction, the heat transfer direction is consistent throughout the operation cycle. Except for the heat dissipation and heat radiation loss of the cover, the rest heat is used for evaporation of wet part of the drum film, and the heat efficiency can reach 80% - 90%.

2. The operation flexibility is large and the applicability is wide. It can adjust many drying factors of drum dryer. For example, the concentration of feed and drying efficiency of coating film, and many factors are not related to each other. This makes the roller drying operation convenient, which can adapt to the requirements of drying and different production of various materials.

3. The drying time is short. The drying cycle of the material is generally only 10-15 seconds, which is suitable for heat sensitive materials. If the drum dryer is set in a vacuum, it can be operated under pressure reducing conditions.

4. The drying rate is high. Because the film coated on the wall of the cylinder is very thin, it is generally 0.3-1.5mm, and the heat and mass transfer direction is consistent, and the evaporation strength of 30-70kg ·h2o/m2·h can be maintained on the surface of the film.

working principle:

Drum dryer is a kind of rotary continuous drying equipment with internal heating conduction type. The rotating drum is attached with a thick material film through the lower material trough. The heat is transmitted to the inner wall of the drum through the pipe, and then to the outer wall of the drum, and then to the feed film, so that the moisture in the film can be evaporated, dehumidified and the material containing moisture content can be dried. The dried material is shoved off the drum by the scraper installed on the surface of the drum, and then to the auger under the scraper. The dry materials are concentrated and packed by the auger.

Application scope:

It is suitable for drying liquid or viscous materials in chemical industry, dye, pharmaceutical industry, food industry, metallurgy industry.

Technical parameters: