Drum Dryeris a drying system in which water / solvent removed from a solution / suspension by the heating source. Drum Dryer is a slow speed rotating drum, a part of the drum is submerged in an attached trough contains wet feed. Heat is applied to the inside of the rotating drum through drum hollow shaft and thorough rotary joint and the wet feed clings to the outside of the drum.

The material is dryed during a part of revolution and is removed by a blade or scraper. The condensate inside the drum will come out through other port of rotary joint The operation of the drum dryer is controlled by the adjustment of the drum speed and the heat applied.

The material of construction and the size of the drum depend upon the character of the product and its capacity

Introduction
Rotary vacuum dryers offer clean, simple and effective method of drying wet cake, powder and even slurry. Labor and energy costs are minimal compared to tray dryers and product losses during handling are also negligible. Additionally valuable organic solvents can be conveniently condensed and recovered.

Working Principle
The drying in a rotary vacuum dryer is a batch operation under vacuum. It is possible to dry heat sensitive materials at well below boiling points of water and solvents. Drying time depends on material being dried, amount of solvent or water to be removed, desired final moisture content, permissible jacket temperature etc. The dryer is available in sizes ranging from 100 liters to 20, 000 liters gross volume. The volume of wet material loaded into the dryer is usually restricted to 50% of gross volume.

• Rotary Vacuum Dryers (RVD) also known as Vanuleuth Dryer, is a cylindrical jacketed vessel with a central agitator having specially designed blades. The blades of this Rotary Vacuum Paddle Dryer (RVPD) are so designed that they sweep the entire internal surface and at the same time turn the material so that all the particles are come in contact with the heated surface.
• The central agitator shaft is supported on the two end bearings housed in bearing housing in such a way that the alignment remains always intact. This central agitator is driven by means of a Motor & Gear box through the bull Gear.
• Cooling could also be provided by cold water / brine refrigerant through the jacket.
• The horizontal shell is jacketed to heat the shell with steam / hot water or any other thermal fluid. Limpet coil is provided instead of jacket if the heating media is fluid.
• A Dust Catcher consisting of bag filter is provided on the top to prevent the losses of material particles after the drying process.
• A Condenser of adequate heating surface area is provided wherein the evaporated vapors are condensed and these condensed vapors are then collected in the receiver of suitable capacity, placed beneath the condenser.
• A Vacuum Pump of adequate capacity is provided & fitted to the receiver of these rotary vacuum dryers to create the vacuum in the dryer shell through the Receiver, Condenser and Dust Catcher.

Spray drying is the transformation of feed from a fluid state into a dried form by spraying the feed into a hot drying medium. The feed is pumped from the product feed tank to the atomizing device, located in the air disperser at the top of the drying chamber. The drying air is drawn from the atmosphere via a filter by a supply fan and is passed through the air heater to the air disperser. The atomized droplets meet the hot air and the evaporation takes place, while cooling of the air happen simultaneously. In Spray Drier, after the spray is dried in the drying chamber, the majority of the dried product falls to the bottom of the chamber and enters to a pneumatic conveying and cooling system.

Spin Flash Dryer is used for effective and efficient method of removal of surface or on bound moisture from a feed product. Spin Flash Dryers are designed for continuous drying of cohesive and non-cohesive pastes, filter cakes and high viscosity liquids. Under the action of hot air and mechanical dispersion, the wet cake appears granular and gets fluidized. Instantaneous exchange of heat and mass takes place. The dried materials are taken in the collector as powder products.

Rotary Dryers are used to remove moisture from material using hot gases to heat the feed material and to evaporate the water. Rotary Dryers are suitable for drying wide range of materials continuously because of its ability to process material having considerable variation in size and composition.

Drum Dryeris a drying system in which water / solvent removed from a solution / suspension by the heating source. Drum Dryer is a slow speed rotating drum, a part of the drum is submerged in an attached trough contains wet feed. Heat is applied to the inside of the rotating drum through drum hollow shaft and thorough rotary joint and the wet feed clings to the outside of the drum.

The material is dryed during a part of revolution and is removed by a blade or scraper. The condensate inside the drum will come out through other port of rotary joint The operation of the drum dryer is controlled by the adjustment of the drum speed and the heat applied.

The material of construction and the size of the drum depend upon the character of the product and its capacity

Introduction
Rotary vacuum dryers offer clean, simple and effective method of drying wet cake, powder and even slurry. Labor and energy costs are minimal compared to tray dryers and product losses during handling are also negligible. Additionally valuable organic solvents can be conveniently condensed and recovered.

Working Principle
The drying in a rotary vacuum dryer is a batch operation under vacuum. It is possible to dry heat sensitive materials at well below boiling points of water and solvents. Drying time depends on material being dried, amount of solvent or water to be removed, desired final moisture content, permissible jacket temperature etc. The dryer is available in sizes ranging from 100 liters to 20, 000 liters gross volume. The volume of wet material loaded into the dryer is usually restricted to 50% of gross volume.

• Rotary Vacuum Dryers (RVD) also known as Vanuleuth Dryer, is a cylindrical jacketed vessel with a central agitator having specially designed blades. The blades of this Rotary Vacuum Paddle Dryer (RVPD) are so designed that they sweep the entire internal surface and at the same time turn the material so that all the particles are come in contact with the heated surface.
• The central agitator shaft is supported on the two end bearings housed in bearing housing in such a way that the alignment remains always intact. This central agitator is driven by means of a Motor & Gear box through the bull Gear.
• Cooling could also be provided by cold water / brine refrigerant through the jacket.
• The horizontal shell is jacketed to heat the shell with steam / hot water or any other thermal fluid. Limpet coil is provided instead of jacket if the heating media is fluid.
• A Dust Catcher consisting of bag filter is provided on the top to prevent the losses of material particles after the drying process.
• A Condenser of adequate heating surface area is provided wherein the evaporated vapors are condensed and these condensed vapors are then collected in the receiver of suitable capacity, placed beneath the condenser.
• A Vacuum Pump of adequate capacity is provided & fitted to the receiver of these rotary vacuum dryers to create the vacuum in the dryer shell through the Receiver, Condenser and Dust Catcher.

Spray drying is the transformation of feed from a fluid state into a dried form by spraying the feed into a hot drying medium. The feed is pumped from the product feed tank to the atomizing device, located in the air disperser at the top of the drying chamber. The drying air is drawn from the atmosphere via a filter by a supply fan and is passed through the air heater to the air disperser. The atomized droplets meet the hot air and the evaporation takes place, while cooling of the air happen simultaneously. In Spray Drier, after the spray is dried in the drying chamber, the majority of the dried product falls to the bottom of the chamber and enters to a pneumatic conveying and cooling system.

Spin Flash Dryer is used for effective and efficient method of removal of surface or on bound moisture from a feed product. Spin Flash Dryers are designed for continuous drying of cohesive and non-cohesive pastes, filter cakes and high viscosity liquids. Under the action of hot air and mechanical dispersion, the wet cake appears granular and gets fluidized. Instantaneous exchange of heat and mass takes place. The dried materials are taken in the collector as powder products.

Rotary Dryers are used to remove moisture from material using hot gases to heat the feed material and to evaporate the water. Rotary Dryers are suitable for drying wide range of materials continuously because of its ability to process material having considerable variation in size and composition.