Allied & ICAR Exam Bank • ALLIED_0997 NAT • 2 Marks

Section 7: Dairy and Food Engineering

Agricultural Process Engineering

Subtopic: Oil Extraction and Refining

Question Statement:

Soybean flakes containing $20\%$ oil are processed in a continuous solvent extraction plant at feed rate $F = 1000\text{ kg/h}$ (total oil feed $= 200\text{ kg/h}$). If residual oil in de-oiled meal is $1.0\%$ of total feed weight ($10\text{ kg/h}$), the recovered crude soybean oil $200 - 10$ in kg/h is:

Answer Key:

190

Step-by-Step Solution & Explanation

Recovered oil $= 200 - 10 = 190.0\text{ kg/h}$ (a $95\%$ recovery efficiency).
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