Description
Drum dryer is a kind of rotating continuous drying equipment with internal heating conducting-style.Certain thickness of materials film attach to the drum from material liquid vessel under the drum. Heat is transferred to the internal wall of the cylinder through pipes and then to the external wall and to materials film, to evaporate the moisture in
materials film so as to dry materials. Dried products are then scraped off by the blade fitted on the surface of the cylinder, fall down to the spiral conveyor under the blade, and then the products are conveyed, collected and packed.
Features
High heat efficiency. The principle of heat transfer of the cylinder dryer is heat
conduction and the conducting direction keeps identical in the whole operation circle.
Except heat loss of end cover and radiation loss, all heat can be used for evaporation of
wet materials on the wall the cylinder. The efficiency can reach 70-80%.
Large operation elasticity and wide application. Various drying factors of the dryer can
be adjusted, such as concentration of feeding liquid/thickness of material film,
temperature of heating medium, rotating speed of the drum etc. which can change
drying speed of the under dryer. As these factors have no interrelations each other, it
brings great convenience to dry operation and makes it applicable to dry various
materials and to meet different requirements of production.
Short drying period. The drying period of materials is normally 10 to 300 seconds, so it
is suitable for heat-sensitive materials.
Fast drying rate. As film of materials coated on the wall of the cylinder is very thin.
Normal, thickness is 0.3 to 1.5mm, plus directions of heat and mass transmitting are
identical, the evaporation strength on the surface of the film can be 20-70 kg.H2O/m2.h.
Applications
It is suitable for drying liquid raw materials or thick liquid in chemical, dyestuff,
pharmaceutical, foodstuff, metallurgy and so on industries.
For example, yeast, starch, brewer’s grains, etc. Every model’s structure is modified
base on each kind of the material’s specific features.
Drum dryer is a kind of rotating continuous drying equipment with internal heating conducting-style.Certain thickness of materials film attach to the drum from material liquid vessel under the drum. Heat is transferred to the internal wall of the cylinder through pipes and then to the external wall and to materials film, to evaporate the moisture in
materials film so as to dry materials. Dried products are then scraped off by the blade fitted on the surface of the cylinder, fall down to the spiral conveyor under the blade, and then the products are conveyed, collected and packed.
Features
High heat efficiency. The principle of heat transfer of the cylinder dryer is heat
conduction and the conducting direction keeps identical in the whole operation circle.
Except heat loss of end cover and radiation loss, all heat can be used for evaporation of
wet materials on the wall the cylinder. The efficiency can reach 70-80%.
Large operation elasticity and wide application. Various drying factors of the dryer can
be adjusted, such as concentration of feeding liquid/thickness of material film,
temperature of heating medium, rotating speed of the drum etc. which can change
drying speed of the under dryer. As these factors have no interrelations each other, it
brings great convenience to dry operation and makes it applicable to dry various
materials and to meet different requirements of production.
Short drying period. The drying period of materials is normally 10 to 300 seconds, so it
is suitable for heat-sensitive materials.
Fast drying rate. As film of materials coated on the wall of the cylinder is very thin.
Normal, thickness is 0.3 to 1.5mm, plus directions of heat and mass transmitting are
identical, the evaporation strength on the surface of the film can be 20-70 kg.H2O/m2.h.
Applications
It is suitable for drying liquid raw materials or thick liquid in chemical, dyestuff,
pharmaceutical, foodstuff, metallurgy and so on industries.
For example, yeast, starch, brewer’s grains, etc. Every model’s structure is modified
base on each kind of the material’s specific features.