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HRS DTI Series Double Tube Heat Exchanger - Sludge Application

Industrial Double Tube Heat Exchangers – HRS DTI Series

A tube in tube heat exchanger for processing sludge with large particles. The large diameter of the inner tube allows sludge to be processed without blockages. Promotes high heat transfer and is easy to clean. A true counterpart for digester heating, cooling, pasteurisation and sludge heat treatment.

The product flows through the inner tube and the service fluid through the annulus between the inner and outer tube. Because of its geometry, the DTI heat exchanger is a true counter-current heat exchanger.

An expansion joint (bellow) is fitted in the shell to allow for differential expansion of the inner and outer tube during operation. Multiple units can be interconnected and have the options of frame mounting, insulated and cladded in stainless steel.

The HRS DTI series is suitable for applications which are highly fibrous or viscose industrial product.



  • Shell side: AISI 304 stainless steel
  • Tube side: AISI 316L stainless steel


  • Shell and Tube side:
    • Flanged: EN1091-1, ASME, ANSI

Surface Finish:

  • External: Matt
  • Product side Descaled

Design conditions:

  • PED 2014/68/EU
  • Design Code: PD5500
  • ASME


_HRS DTI Series Double Tube Heat Exchanger


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