March 23 2021 0Comment
maintient hygrométrie chocolaterie

How to maintain dry air conditions for coating in a chocolate factory?

Cemoi : Confectionery and chocolate production

Customer needs  :

  • Provide low humidity atmosphere in the production environment
  • Maintain dry air conditions for coating in a chocolate factory
  • Prevent “sticking” of the sweets aftercoating
  • Maintain dry air blowing conditions at 20°C and 21% relative humidity, i.e. 3g water per kg dry air
  • Reduce waste
  • Increase production capacity
  • Quickly drying

DESSICA solutions :


  • Supply of a DT-1300 standalone rotary adsorption air dryer
  • A cold post-cooling battery was installed downstream of the dehumidifier.
  • The installation is controlled from the control room.
  • The silica gel desiccant rotors ensures a very high dehumidification performance.
  • The device operates from a PID controller (Proportional–Integral–Derivative) in order to maintain precisely the desired absolute humidity and a temperature control at 20°C.


  • The commissioning was carried out by the DESSiCA technicians.

Support and services

  • Technical solution with low maintenance requirements apart from changing air filters 1 to 2 times a year
  • Desiccant wheel life : 80% minimum yield after 10 years (subject to proper use)

Key benefits and  return on Investment (ROI) for Cemoi

  • The installation provided by DESSiCA and its mode of operation fully met Cemoi’s expectations.
  • The installation of the system enabled Cemoi to obtain a dry air, maximize sweets processing and increase the production volumes.
  • The unit is now operate since September 2018, so far, no product loss or negative feedback from the customer has been reported.

loupe-magnifying-glass-3615985_640Clic here to upload Cémoi case study on PDF

For more infomation :  +33 (0)4 74 08 44 44 ou

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Installation on Cemoi factory in Chambery (FR-74)