Liquid Extraction

Countercurrent solvent extraction design using distribution coefficients and the Kremser equation

Input Parameters

Feed Flow Rate (kg/h)

Feed Composition (mass fraction)

Target Raffinate Composition

Partitioning

Distribution Coefficient (K = y/x)

Higher K = better extraction

Solvent-to-Feed Ratio (S/F)

Design Results

Theoretical Stages

(1.7712 exact)

100.0000%

Recovery

20.0000 kg/h

Stream Properties

Extract Flow:500.0000 kg/h

Raffinate Flow:0.0000e+0 kg/h

Extract Composition:2.0000%

Extraction Factor (A):3.0000

Single Stage Comparison

Single stage would give: 2.5000% vs target 1.0000%

Design Recommendations

Good extraction factor — efficient separation