Filtration & Drying Systems

Spin Flash Dryers

A Spin Flash Dryer is a high-speed drying system used to convert slurries, pastes, cakes, and sticky materials into free-flowing powders in a matter of seconds.
It combines mechanical agitation, high-temperature air, and flash drying to rapidly remove moisture while preventing agglomeration.

Working Principle:
Wet feed is fed into a rotating disintegrator at the base of the dryer, where hot air instantly evaporates the moisture and conveys the dried particles upwards. The product is then separated using cyclone/bag filters.

Used In:
API, chemicals, dyes, pigments, agrochemicals, food ingredients, minerals, polymers, starch, fertilizers.

Advantages:
✔ Continuous operation
✔ Handles sticky / non-flowable feed
✔ Quick drying (seconds)
✔ Uniform fine powder
✔ Energy efficient
✔ Closed-loop systems available for solvents

A. General Construction

ParameterTypical Specification
Material of ConstructionSS304 / SS316 / SS316L / MS + epoxy coating
Capacity10 kg/hr to 2000 kg/hr (moisture evaporation rate)
DesignVertical drying chamber with rotary disintegrator
OperationContinuous

 

B. Process Conditions

ParameterTypical Value
Inlet Air Temperature160°C – 350°C (depending on product)
Outlet Air Temperature80°C – 120°C
Moisture Feed ContentUp to 40–70% (slurry/paste)
Final Moisture< 0.5–2% (product dependent)

 

C. Mechanical Components

1. Drying Chamber

  • Vertical cylindrical tower
  • Tangential/axial hot air entry
  • Insulated with mineral wool + SS cladding

2. Disintegrator / Rotor Assembly

ComponentSpecification
DriveFLP/Non-FLP motor with VFD
Rotor Speed1000–4000 RPM (as per model)
ShaftSS316/SS316L
BladesHardened SS or special alloy

3. Air Handling System

  • Hot air generator (HAG) or steam/thermic fluid heater
  • Blower/fan for air circulation
  • Temperature control with PID

 

D. Powder Recovery System

EquipmentPurpose
Cyclone SeparatorPrimary powder recovery
Bag Filter / Pulse JetFine powder recovery
Rotary Airlock ValveDischarge without air leakage
Scrubber (if required)Removal of vapour/odor/toxic fumes

 

E. Feed Handling System

  • Screw feeder / piston pump / slurry pump
  • Feed control via VFD
  •  

F. Instrumentation & Safety

  • Temperature sensors (inlet/outlet)
  • Differential pressure gauges (bag filter)
  • Explosion vents (optional)
  • Electrical FLP panels (if required)

 

G. Optional Features

  • GMP-compliant internal finish (Ra ≤ 0.8 μm)
  • Nitrogen inert loop (for solvent-based drying)
  • CIP nozzles for cleaning
  • PLC/SCADA automation
  • Online particle size control
  • Twin-cyclone or multi-cyclone system
  • Heat recovery for energy-saving (optional)

 

H. Testing & Documentation

  • FAT test report
  • Performance trial
  • Airflow measurement
  • Heat balance validation
  • Material test certificates (MTC)
  • GMP/CE-compliant documentation

 

A. General Construction

ParameterTypical Specification
Material of ConstructionSS304 / SS316 / SS316L / MS + epoxy coating
Capacity10 kg/hr to 2000 kg/hr (moisture evaporation rate)
DesignVertical drying chamber with rotary disintegrator
OperationContinuous

 

B. Process Conditions

ParameterTypical Value
Inlet Air Temperature160°C – 350°C (depending on product)
Outlet Air Temperature80°C – 120°C
Moisture Feed ContentUp to 40–70% (slurry/paste)
Final Moisture< 0.5–2% (product dependent)

 

C. Mechanical Components

1. Drying Chamber

  • Vertical cylindrical tower
  • Tangential/axial hot air entry
  • Insulated with mineral wool + SS cladding

2. Disintegrator / Rotor Assembly

ComponentSpecification
DriveFLP/Non-FLP motor with VFD
Rotor Speed1000–4000 RPM (as per model)
ShaftSS316/SS316L
BladesHardened SS or special alloy

3. Air Handling System

  • Hot air generator (HAG) or steam/thermic fluid heater
  • Blower/fan for air circulation
  • Temperature control with PID

 

D. Powder Recovery System

EquipmentPurpose
Cyclone SeparatorPrimary powder recovery
Bag Filter / Pulse JetFine powder recovery
Rotary Airlock ValveDischarge without air leakage
Scrubber (if required)Removal of vapour/odor/toxic fumes

 

E. Feed Handling System

  • Screw feeder / piston pump / slurry pump
  • Feed control via VFD
  •  

F. Instrumentation & Safety

  • Temperature sensors (inlet/outlet)
  • Differential pressure gauges (bag filter)
  • Explosion vents (optional)
  • Electrical FLP panels (if required)

 

G. Optional Features

  • GMP-compliant internal finish (Ra ≤ 0.8 μm)
  • Nitrogen inert loop (for solvent-based drying)
  • CIP nozzles for cleaning
  • PLC/SCADA automation
  • Online particle size control
  • Twin-cyclone or multi-cyclone system
  • Heat recovery for energy-saving (optional)

 

H. Testing & Documentation

  • FAT test report
  • Performance trial
  • Airflow measurement
  • Heat balance validation
  • Material test certificates (MTC)
  • GMP/CE-compliant documentation

 

  • Robust industrial construction
  • Low maintenance
  • Energy efficient

Applications and industry use-cases for this product are described here.