Acids

Recycled acids (spent acids): concentration and recovery

FE designs thermal units for the re-concentration of spent acids from industrial processes, enabling their reuse in production lines. These solutions apply to different types of acids:

  • Sulfuric acid (H₂SO₄)
  • Nitric acid (HNO₃)
  • Hydrochloric acid (HCl)
  • Phosphoric acid (H₃PO₄)
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Objective: to recover acid in the process

Used acids may come from:

  • Chemical or metallurgical processes
  • Electrodialysis systems
  • Surface treatments or leaching

Re-concentration allows:

  • Reduce waste
  • Reusing acid in the process
  • Reduce the cost of purchasing new acid
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Technologies adapted to the nature of the acid

Depending on the product characteristics, FE offers:

  • Evaporation systems (vacuum or pressurized)
  • Distillation units for volatile acids (e.g., HCl, HNO₃)
  • Hybrid technologies combining evaporation and distillation
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Custom materials and design

The equipment is designed with corrosion-resistant materials (graphite, special alloys, coatings, etc.), ensuring:

  • Sustainability
  • Safety
  • Chemical compatibility
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Mechanical Vapor Recompression (MVR): energy performance

All our solutions can integrate MVR, enabling:

  • A significant reduction in energy consumption
  • A reduction in CO₂ emissions
  • Electrification of the process for improved sustainability