Direct Contact Heater is a heat exchange heater that works on the principle of counter current heat exchange. DCH is an alternative approach to the plate and tabular heaters.

DCH plus Direct Contact Heaters offered by IPROINDIA, are equipped with optimum internal design for better mixture of liquids and vapours. The direct contact heaters directly/indirectly play important role in energy saving. Over the years, these have become integral part of newly setup efficient sugar plants as well as existing plants being oprtimized.

The main concept behind the design of the DCH plus Direct Contact Heaters is to handle higher load variations with minimal performance change. Compared to conventional heaters very little space, piping and structure is required. The heaters are designed according to ASME standards with SS 304 material.

External entrainment separator

There could be a significant sugar losses due to entrainment. Though, DCH plus design don’t allow entrainment, but still external separators is provided as added safety feature to avoid any sugar loss.

Operation with low pressure vapour

DCH plus direct contact heater works at low temperature approach of 1oC whereas other heaters normal operate at 5-7oC.

DCH plus is an inline system which requires low pressure vapour in small amount to achieve desired temperature and hence steam is saved.

Application of DCH plus Direct Contact Heater

DCH plus are used for the heating of the following :

  • Scalding juice
  • Raw juice
  • Sulphited juice
  • Clear juice
  • Filtrate
  • Syrup
  • Melt
  • Liquor
  • Molasses conditioning
Entrainment Separator
Direct Contact Heater


The efficient mixture of vapours and liquids enables the heaters achieving approach temperatures of 0.5 – 2 K. The vapour bleeding can be shifted backwards to make the process more steam efficient.

Benefits of Direct Contact Heater

  • Low temperature approach
  • No cleaning required in running season
  • Constant performance
  • Simple design and easy operation
  • Low cost, easy to integrate with low space demand
  • Operates with low pressure vapors


As a prerequisite, automation is required for DCH for proper operation. We provide complete automation solution.


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SCO 236,1st & 2nd Floor, Sector 40 D,
Chandigarh - 160036, INDIA
+91 172 4020617 - 18