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The latest generation of instruments – the Nano Spray Dryer B-90 – revolutionizes today’s spray drying possibilities with the unique ability to generate particle sizes in the nano range for milligram sample quantities at high yields. The new Nano Spray Dryer B-90 is particularly suited to the needs of the pharmaceutical, biotech, material and nanotech markets.
Features

Principle of spray generation:

  • The droplet generation is based on a piezoelectric driven actuator, vibrating a thin, perforated, stainless steel membrane in a small spray cap
  • The membrane (spray mesh) 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

Principle

  • The drying gas enters in laminar flow from the top into the drying chamber and is heated up to the set inlet temperature
  • The piezodriven spray head generates ultra-fine droplets, which are gently dried into 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 and, in addition, the gas is filtered

Application areas:

  • Nanoparticle suspensions/nanoemulsions
  • Nanoparticle agglomerations
  • Structural modifications
  • Generation of nanoparticles with high recovery rates
  • Spray drying of aqueous and organic solvent samples

Key features and benefits:

Heating system (patent pending)

  • Compact porous metal foam for optimal energy input
  • Short heat-up times up to 120 °C
  • Generation of laminar gas flow in the drying section
  • Convective heat transfer between droplets and gas
  • Fast heating control by pluggable PT-1000 temperature sensor

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

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 trials
  • Export of process parameters for further data analysis

Height adjustable peristaltic pump

  • Sample feeding with pluggable peristaltic pump
  • Continous recirculation of the sample feed, from sample vessel to spray head and back
  • Minimal dead volume in the feeding tubes

Novel piezoelectric driven droplet atomizing technology

  • Ultrasonic atomization at 60 kHz driving frequency for gentle and soft droplet generation
  • Choice of three different spray caps with 4.0, 5.5 or 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

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 the protection of users and the environment
Specification
  • Power consumption: 1500 W (max)
  • Connection voltage: 100 – 240 VAC ± 10 %
  • Frequency: 50/ 60 Hz
  • Heating capacity: 1400 W (max)
  • Max. inlet temperature: 120oC
  • Evaporating capacit: max. 0.2 l/h H2O, higher for solvents
  • Drying gas flow: 80 – 160 lít/ phút
  • Spray caps (hole diameters): 4 μm, 5.5 μm, 7 μm
  • Mean droplet size range: 8 – 21 μm
  • Mean particle size range: 300 nm – 5 μm
  • Mean residence time: 1 – 4 giây
  • Protection rating: IP 42
  • Pollution degree: 2
  • Environmental conditions: for indoor use only
  • Temperature: 5 – 40°C
  • Altitude: up to 2000 m
  • Humidity: max. relative humidity 80 % for temperatures up to 31°C, and then linearly decreasing to 50 % at 40 °C
  • Dimensions (W x H x D): 58 x 110 x 55 cm (short set-up) /58 x 150 x 55 cm (tall set-up)
  • Weight: 65 kg (short set-up) / 70 kg (tall set-up)
     
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