Nano Spray Dryer B-90

• The drying gas enters laminarly from the top into the drying chamber and is heated up to the set inlet temperature

• The piezodriven spray nozzle generates ultra-fine droplets, which are gently dried to solid particles

• The dried solid particles are electrostatically charged and collected at the collecting electrode

• The drying gas exits the spray dryer, the outlet temperature is measured, in addition, the gas is filtered

• The droplet generation is based on a piezoelectric driven actuator, vibrating a thin, perforated, stainless steel membrane (mesh) in a small spray cap
  
  
• The membrane features an array of precise micron-sized holes.
  
  
• The actuator is driven at an ultrasonic frequency, causing the membrane to vibrate, ejecting millions of precisely sized droplets every second with very narrow droplet size distribution
  
  

Spray head with piezotechnology




Spray caps with perforated meshes
(4.0, 5.5 and 7.0 μm hole size)

Novel piezoelectric driven droplet atomizing technology

• Ultrasonic atomazation at 60 kHz driving frequency for gentle and soft droplet generation
  
  
• Choice of three different spray caps with 4.0, 5.5 and 7.0 μm mesh hole size
  
  
• Very narrow droplet size distribution
  
  
• Simple exchange of spray caps
  
  
• Easy cleaning of spray head with detergents or in an ultrasonic bath

• Compact porous metal foam for optimal heating energy input

• Short heat-up times up to 120 °C

• Generation of laminar gas flow in the drying section

• Connvective heat transfer between droplets and gas
  
  
• Fast heating control by pluggalbe PT-1000 temperature sensor

Innovative electrostatic particle collector for submicron- and nanoparticles

• Particle separation rate is independent of particle mass (as in cyclones) and allows collection of fine nanoparticles (separation efficiency >99%)
  
  
• Excellent product yields up to 90 % for small sample quantities <100 mg
  
  
• Simple particle collection with manual particle scraper
  
  
• Integrated outlet gas filter for user and environment protection

Easy operation and instrument control

• Visualized process parameters and simple display control

• Convenient setting of inlet/outlet temperature, drying gas flow, spray rate and pressure on the front panel

PC-software for online data monitoring and storage

• Data storage of experimental runs in a library
  
  
• Documentation of process data of experimental runs
  
  
• Export of process parameters for further data analyis (eg. to MS Excel)

• Sample  feeding  with  pluggable  peristaltic pump

• Continous recirculation of the sample, from  sample  vessel  to  spray  head and back

• Minimal dead volume in the feeding tubes

Modular glass assembly of the spray cylinder

• Visibility of the complete spray process from droplet generation to particle collection
  
  
• Use the short instrument for ultra-fine droplet production and the tall unit for larger droplets and water based samples
  
  
• Angular spray head installation for heat sensitive materials and small sample amounts down to 1 ml
  
  
• Simple and ergonomic installation of modular glassware
  
  
• This table-top instrument is easy to clean and sterilize