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СATALOGUE / DRYING OF BULK MATERIALS IN A FLUIDIZED BED / Vacuum and atmospheric spray freeze dryer

Vacuum and atmospheric spray freeze dryer


  • Vacuum and Atmospheric Spray Freeze Dryer
  • Freeze drying
  • Wet granulation in production
  • Dry granulation
  • Semi-automatic Filling machine
  • Powder Mixing Machine
  • Carton packing for powder

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СATALOGUE / DRYING OF BULK MATERIALS IN A FLUIDIZED BED / Vacuum and atmospheric spray freeze dryer

Vacuum and atmospheric spray freeze dryer

The vacuum freeze dehydration method combines the advantages of two well-known dehydration methods – freezing and vacuum drying. At freezing undesirable changes in product properties are minimal, and at subsequent drying frozen moisture is removed, which makes it possible to store products in appropriate packaging (a year or more) at unregulated ambient temperature. Energy costs for organizing the freeze drying process in vacuum are 15-20 times higher than for heat drying.

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  • Information updated : 09 / 07 / 2024
  • In stock
  • Manufacturer : 1 year for Vacuum and atmospheric spray freeze dryer

Model: Vacuum and atmospheric spray freeze dryer

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Atmospheric freeze drying in conditions of convective heat supply (for example, in a spray chamber or fluidized bed apparatus) allows to intensify the process of moisture removal dozens of times. A special feature of the spray drying chamber design is the perforated walls through which the drying agent is fed. The created gas flows prevent particles from sticking to the chamber walls. Free-flowing powders of thermolabile pharmaceutical materials containing highly porous microparticles with good aerodynamic properties were obtained on this unit.

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Technical specifications

In addition, vacuum freeze dryers are characterized by high cost, high operating costs and difficult maintenance. Among other things, vacuum freeze drying is not always suitable for product quality characteristics such as bulkiness, particle shape and particle size. Taking into account the above-mentioned disadvantages, it can be noted that as an alternative to the process of vacuum sublimation is an atmospheric freeze drying, which allows to obtain a product that is not inferior in quality to the product obtained by vacuum freeze drying, as well as provides an opportunity to intensify dehydration and reduce production costs.

Additional information

Atmospheric spray freeze drying. Transition from vacuum conditions to atmospheric pressure allows to exclude from the technological process expensive and energy-consuming vacuum equipment, reduce operating costs. The intensity of vacuum sublimation drying in a fixed layer in comparison with similar sublimation drying at atmospheric pressure is much higher, which is explained by the increase in the driving force of the process in low pressure conditions – the temperature difference between the dried material and the environment.

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