Pulsed, Packed – Random & Structured, and Sieve Tray LLE Columns

Pulsed ColumnPulsed Column Characteristics

  • Reasonable capacity: 20-30 M3/M2-hr
  • Best suited for nuclear applications due to lack of seal
  • Suited for corrosive applications when constructed out of non-metals
  • Limited stages due to backmixing
  • Limited diameter/height due to pulse energy required

Packed-RandomPacked – Random

  • High capacity: 20-30 M3/M2
  • Poor efficiency due to backmixing and wetting
  • Limited turndown flexibility
  • Affected by changes in wetting characteristics
  • Limited as to which phase can be dispersed

Packed - StructuredPacked – Structured

  • High capacity: 40-80 M3/M2-hr
  • Poor efficiency due to backmixing and wetting
  • Limited turndown flexibility
  • Affected by changes in wetting characteristics
  • Limited as to which phase can be dispersed

Sieve Tray ColumnSieve Tray Characteristics

  • High capacity: 30-50 M3/M2-hr
  • Good efficiency due to minimum backmixing
  • Multiple interfaces can be a problem
  • Limited turndown flexibility
  • Affected by changes in wetting characteristics
  • Limited as to which phase can be dispersed