Main benefits
  • Compact layout
  • High purity in one step
  • Low energy consumption
  • Low installation costs
Main applications
  • Organic and inorganic chemicals at high purities
  • Monomers
  • Carboxylic acids
  • Aromatic isomers


The advantages of suspension crystallization must be balanced against a higher mechanical complexity when compared with the layertechnologies.

The process can be divided in two blocks:

  • Crystallization: production of the crystals
    This block consists of at least one scraped surface crystallizer for removal of the crystallization heat, and a growth vessel where the produced crystals have time to grow to a separable size. 
  • Separation: separation of the crystals from the mother liquor
    This block consists of at least one wash column with peripherals such as a melt loop with a heat exchanger to melt the crystals.

For certain applications, delivery of a skid-mounted unit may be an option.

Process flow diagram
Process flow diagram
Process flow diagram
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