SUPERHIDIC®: Innovative Energy Saving Distillation SystemSUPERHIDIC®: Innovative Energy Saving Distillation System

SUPERHIDIC developed by TOYO provides an excellent energy saving above 50% compared to conventional distillation system in various industrial applications.
SUPERHIDIC offers attractive economics without utilizing special equipment but applying well proven technology related to distillation and heat transfer. Moreover good maintainability can be achieved with SUPERHIDIC.


  • Side-exchanges accomplished by stabbed-in heat exchangers

    • Side-exchangers can be provided at composition where enthalpy change should be provided.
    • Heat transfer area can be adjusted so as to meet desirable heat duty.
    • Pairing of stages between rectifying section and stripping section can be determined in consideration of desirable heat duty and temperature difference.
    • Overall heat transfer coefficient can be predicted in high confidence level.
    • Side-exchanges can be accomplished by means of thermo-siphon/gravity.
  • Normal column is applicable

    • Normal trays or packing is utilized.
    • Side-cut to obtain intermediate product or multiple-feed can be carried out.
    • Feed stage can be optimized.
  • Consequently, following advantages are achieved

    • Highest energy saving performance in distillation system developed so far.
    • Good maintainability as normal facility.
Conceptual diagram of SUPERHIDIC
SUPERHIDIC is co-licensed by National Institute of Advanced Industrial Science and Technology and Toyo Engineering Corporation.


Simplified Flow Scheme of SUPERHIDIC



  • Excellent energy saving with good economics is expected by introducing SUPERHIDIC for the following conditions at existing column modification or new installation.

    • Temperature difference between the overhead and the bottom lower than 80℃
    • Expensive utilities
    • Large scale reboiler and/or condenser duty

Expanded application - part 1

Based on our knowledge acquired from the 1st application of SUPERHIDIC, TOYO proceeded with further technology development.
In the 1st application, the existing facilities were replaced with the new facilities. However, as a result of the technology development, existing distillation column and its auxiliary facilities can be re-used as configuration of SUPERHIDIC system in maintaining excellent energy efficiency.
This re-used system contributes to further improvement of economic efficiency by reducing investment cost.

Overview of equipment in SUPERHIDIC which is often applied in its re-used system Overview of equipment in SUPERHIDIC which is often applied in its re-used system

Expanded application - part 2

In systems where operating pressure/temperature of distillation column are limited ( compression of process gas is difficult, or deep vacuum system), the above concept can be realized by combining SUPERHIDIC technology with indirect heat pump cycles.
Indirect heat pump system is inferior to direct heat pump system in terms of their energy saving performance. However, TOYO developed patented technologies in which the indirect heat pump system can achieve energy saving without changing operation of existing distillation columns (no change in operating pressure). This approach is beneficial to a deep vacuum system, food/beverage process, etc.

  • Features of the indirect heat pump

    • Appropriate combination of several heat pump cycles
      Desirable heat exchange can be achieved by appropriately combining several heat pump cycles.
    • Flexibility in selecting working fluid
      Appropriate working fluid can be selected in consideration of various constraints so as to perform the desirable heat exchange in the heat pump system.
Indirect heat pump system in which concept of SUPERHIDIC is combined Indirect heat pump system in which concept of SUPERHIDIC is combined

TOYO can offer attractive solution how to apply SUPERHIDIC effectively in your existing plant,even if the candidate column has been involved in heat recovery at its condenser/reboiler or a reduction of the stream consumption currently used at reboilers results in just surplus. Such solution can be found through our developed mathematical optimization approach, HERO.

HERO (Hybrid Energy system Re-Optimization)

Examples of the application

Implementation Scheme

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