The technology of spray drying systems and spray dryers are widely used in the industry for converting liquid solutions/ suspensions/ slurry /emulsions to powder, granules or agglomerates.

The advantages of spray dryers are consistent product quality, with better control on product parameters like product moisture, bulk density, particle size, dispersion, flow ability etc.

AVM offers Customized Spray Dryers and Spray Drying Systems with variety of Configurations.

Air Flow Pattern Configurations :

• Co- current
• Counter-current
• Mixed flow

Combination of Systems Configurations:

• Two Stage Spray Dryer - Spray dryers followed by fluid bed dryer for drying products which require longer residence time & product conditioning post drying.
• Three Stage Spray Dryer - Spray dryers with Internal fluid bed followed by external fluid bed dryer for producing dust free agglomerates.

Liquid Atomizer Configurations:

• Single Fluid Nozzle Atomizers.
  The liquid feed is atomized into spray droplets by using pressure energy.
• Two Fluid Nozzle Atomizers.
  The liquid feed is atomized into spray droplets by using energy of secondary fluid like Compressed Air, Nitrogen etc.
• Rotary Disc Atomizers / Rotary Atomizers.
  In Rotary disc Atomizers, the kinetic energy of wheel is used for atomization.

Air Heating System Configurations :

• Direct Fired / Indirect Fired Air Heaters: using Liquid / Gaseous Fuels.
• Direct / Indirect Fired Air Heaters: using Solid Fuels, Agro Waste, Saw Dust, Rice Husk, Coal, Briquette etc.
• Indirect Air Heaters: Using Steam / Hot Oil / Thermic Fluid
• Electric Air Heaters: using electricity.

Product / Fines Recovery System Configurations:
Cyclone Separators – Mono, Twin, Quadruple, Multi etc.
Bag Filters – Reverse Pulsejet, Mechanical shaking etc.
Wet Scrubbers – Direct Contact Ventury, Adjustable Ventury, Packed scrubbers etc..

Optional Features Configurations:

• Rotating air brooms with dehumidified air.
• Roof cooling. Rotary atomizer Cooling. Nozzle Lance Cooling.
• Online Dosing & Blending system.
• Product Cooling & conveying system.
Online gas induction system in feed liquid.
• Feed Preparation system.
• Closed Loop Systems / Self Inertized Systems with inert gas as process drying media.
• Solvent Recovery Systems.
• Cleaning in Place Systems.
• Heat Recovery Systems.
• CGMP Construction.
• Safety accessories like Explosion vents with pressure shock resistant design for equipments, explosion de-coupling, Mechanical flame diverter, Vacuum breaker, Fire fighting system
• Computerized control system through PLC / DCS & SCADA.

Spray dryers followed by fluid bed dryer for drying products which require longer residence time & product conditioning post drying.

Spray dryers with Internal fluid bed followed by external fluid bed dryer for producing dust free agglomerates.

'AVM' Pilot / Mini Spray Dryer is an excellent choice for Laboratory testing, Small-scale powder production requirements.

These plants are designed for an evaporation capacity ranging from 3 kg/hr to 60 kg/hr.

'AVM' Pilot Spray Dryers are complete skid mounted packaged plants, comprising of Air heating section, Spray chamber, Cyclone separator, Bag filter liquid pumping system, liquid atomization system, air circulation blowers, Control Panel with Instruments.


AVM offers Pilot / Mini Spray Dryers with variety of Configurations.

Air Heating System Configurations:

• Direct Fired / Indirect Fired Air Heaters: using Liquid / Gaseous Fuels.
• Indirect Air Heaters: Using Steam / Hot Oil / Thermic Fluid
• Electric Air Heaters: using electricity.

Feed Liquid Atomization Options:

• Rotary Disc Atomizers.
• Two Fluid nozzles.
• High Pressure Nozzles.

Additional Features Configuration:

• 2 Stage Systems with Internal Fluidized Bed.
• Closed Loop Systems with inert gas as process drying media.
• Solvent Recovery System.
• Rotating air Brooms for sweeping chamber walls.
• Air Cooled Jacketed Chamber.
• Pre-dehumidification of Drying Air.
• Special Materials of Construction.
• CGMP construction.
• Computerized control system through PLC / DCS & SCADA.

The technology of spray cooling systems and spray coolers is a process to convert melt into solid state by Spraying into Spray chamber. Cooling media is usually dehumidified cold air. The cooling media in these spray cooling systems is admitted into the Spray Chamber. The spray mist in these spray coolers come in intimate contact with the cooling media & gets converted into solid state.

AVM offers Customized Spray Cooling Systems with variety of Configurations.

Air Flow Configurations:

• Co- current.
• Counter- current.
• Mixed Flow.

System Configurations:

• Single Stage Spray Coolers.
• Two Stage Spray Coolers.
• Multi Stage Spray Coolers.

Liquid Atomizer Options:

• Single Fluid Nozzle.
• Two Fluid Nozzle.
• Rotary Disc Atomizer.

Air Cooling Systems Configurations:

• Air Dehumidifiers & Coolers - using utility like Chilled Water, Brine etc.
• Air Dehumidifiers & Coolers - using direct expansion of Refrigerant, Ammonia etc.

Fines Recovery Systems Configurations:

• Cyclone Separators – Mono, Twin, Quadruple etc.
• Bag Filters – Reverse Pulsejet, Mechanical shaking etc.

Optional Feature Configurations Of Spray Coolers:

• Heat tracing for feed line using hot water / steam / electricity as utility.
• Nozzle lance pre-heating, Heated secondary media for Two fluid nozzles.
• Re-circulation of exhaust gas for higher thermal efficiency.
• Safety accessories like Explosion vents with pressure shock resistant design for equipments, Vacuum breaker.
• Computerized control system through PLC / DCS & SCADA.

In Flash Dryer, the wet feed is dispersed into the hot air / gas stream in the drying duct through suitable feed dispersing mechanism. The material gets dried during conveying travel through the drying duct & separated in the Cyclones or bag filters. Some applications require pre-conditioning of feed by back-mixing of dry product or mixing with oversize particles tapped through particle classifiers installed at suitable locations on the drying duct.

AVM offers Customized Flash Drying Systems with variety of Configurations.

Material Feeding Configurations:

• Mono Screw Feeder
• Double Screw Feeder.
• Double Paddle Mixer for back mixing of dry product.
• Feed Bin with Lump Breaker.
• Volumetric feeder.
• Rotary Feeder.

Feed Disperser Configurations:

• Sling Fan.
• Cage Mill.
• Mechanical Scatterer.
• Chain Slinger.
• Ventury Feeder.
• Combinations of above.

Oversize Particle Classifier Configurations:

• Deflector Hood
• Ring Classifier

Air Heating System Configurations:

• Direct Fired / Indirect Fired Air Heaters: using Liquid / Gaseous Fuels.
• Direct / Indirect Fired Air Heaters: using Solid Fuels, Agro Waste, Saw Dust, Rice Husk, Coal, Briquette etc.
• Indirect Air Heaters: Using Steam / Hot Oil / Thermic Fluid
• Electric Air Heaters: using electricity.

Product / Fines Recovery System Configurations

• Cyclone Separators – Mono, Twin, Quadruple, Multi etc.
• Bag Filters – Reverse Pulse jet, Mechanical shaking etc.
• Wet Scrubbers – Direct Contact Ventury, Adjustable Ventury, Packed scrubbers etc.

Optional Features Configurations:

• Product Cooling and Conveying Systems.
• Exhaust gases Recycling for better thermal efficiencies.
• Safety accessories like Static Jumpers, Fire Fighting Systems, Rupture Disc etc.
• Computerized control system through PLC / DCS & SCADA.

In Agitated Swirl Flash Dryers, the wet feed is fed into the dryer housing by suitable feeding mechanism above the rotating swirl agitator. The hot air / gas stream is also admitted in the drying duct through specially designed distributor, admitting the air in swirling fashion. The material remains in agitated bed & dried material gets carried forward & separated in the Cyclones or bag filters. Some applications require pre-conditioning of feed by back-mixing of dry product.

AVM offers Customized Agitated Swirl Flash Drying Systems with variety of Configurations.

Material Feeding Configurations:

• Mono Screw Feeder
• Double Screw Feeder.
• Double Paddle Mixer for back mixing of dry product.
• Feed Bin with Lump Breaker.
• Volumetric feeder.
• Rotary Feeder.
• Specially design double shaft feeder followed by mono screw.
• Positive Displacement Screw Pump for Viscous liquid / Pastes.

Particle Classifier Options:

• Orifice Classifier.
• Rotary particle Classifier.

Air Heating System Configurations

• Direct Fired / Indirect Fired Air Heaters: using Liquid / Gaseous Fuels.
• Direct / Indirect Fired Air Heaters: using Solid Fuels, Agro Waste, Saw Dust, Rice Husk, Coal, Briquette etc.
• Indirect Air Heaters: Using Steam / Hot Oil / Thermic Fluid
• Electric Air Heaters: using electricity.

Product / Fines Recovery System Configurations:

• Cyclone Separators – Mono, Twin, Quadruple, Multi etc.
• Bag Filters – Reverse Pulsejet, Mechanical shaking etc.
• Wet Scrubbers – Direct Contact Ventury, Adjustable Ventury, Packed scrubbers etc.

Optional Features Configurations:

• Product Cooling and Conveying Systems.
• Exhaust gases Recycling for better thermal efficiencies.
• Safety accessories like Static Jumpers, Fire Fighting Systems, Rupture Disc etc.
• Water Cooled Dryer Agitator bearing housing for high temp. operation.
• Computerized control system through PLC / DCS & SCADA.

Fluid Bed Dryers / Cooler are widely used in the Industry for gentle drying / cooling of free flowing solids.

In fluid bed systems, the material is fluidized with help of air stream using specially designed perforated plate. In addition to this, the fluidizer can also be made vibratory to assist the fluidization by imparting mechanical energy. Drying / Cooling media ( Air / Gas ) is admitted in the plenum below the perforated plate. Fluidized state enables intensive interaction & of the material & drying / cooling media ( air / gas) take place, hence high rates of heat transfer are achieved. Product residence time can be adjusted through adjustable discharge weir. Product Drying and cooling is possible in single unit.

AVM offers Customized Fluid Bed Drying Systems with variety of Configurations.

Continuous Fluid Bed Configurations:

• Static Fluid Bed Dryers
• Vibratory Fluid Bed Dryers

Material Feeding Options:

• Rotary Feeder
• Screw Feeder

Product / Fines Recovery System Configurations :

• Cyclone Separators � Mono, Twin, Quadruple Cyclones etc.
• Bag Filters � Reverse Pulsejet, Mechanical Shaking etc.

Air Heating System Configurations:

• Direct Fired / Indirect Fired Air Heaters: using Liquid / Gaseous Fuels.
• Direct / Indirect Fired Air Heaters: using Solid Fuels, Agro Waste, Saw Dust, Rice Husk, Coal, Briquette etc.
• Indirect Air Heaters: Using Steam / Hot Oil / Thermic Fluid
• Electric Air Heaters: using electricity.

Optional Features Configurations :

• Automatic CIP system.
• Liquid Spraying System for Product having requirement of Coating / Lecethination.
• Safety accessories like Rupture Disc, Fire Fighting System.
• Computerized Control System through PLC/ DCS / SCADA.