RECUPERATORS FOR DRI PLANTS

The exhaust heat from the direct reduced iron (DRI) process generally consists of two parallel channels, on which heat exchangers are arranged in series in the flue gas exhaust stream.

The combustion air for the reformer is heated up to 650°C in radiation and convection exchangers. The flue gas inlet temperature is approximately 1150°C.

Feed gas preheaters are installed downstream. These U-shaped tube bundles, preheat the feed gas (a mixture of natural and process gas) to 565ºC to satisfy the facility operating requirements.

Design and manufacture in accordance with American / European regulations
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AD 2000 MERKBLATT

Gas temperature

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ºC

Air temperature

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ºC

Feed temperature gas

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ºC

At Kalfrisa we offer:

  • Design and manufacture of complete heat recovery systems for new direct reduced iron (DRI) plants.
  • Design and manufacture of complete heat recovery systems for existing facilities which require increased production.
  • Supply of spare parts in accordance with original plans or new designs.
  • Advisory work for the optimisation and improvement of heat recovery systems in existing facilities.

Our scope of supply:

  • Manufacture of heat exchangers.
  • Complete detailed engineering and manufacture of the framework, refractory, piping with its insulation and support structures, including platforms.
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ENERGY RECOVERY

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