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