Fatty Acids / Alcohol Fractionation Simulator

Armaco fractionators are designed using an exclusive ‘Armaco Fatty Acid Fractionation Simulator’. This software has been developed and authenticated for fractionation of C6 to C22 Fatty Acids, as well as Fatty Alcohols.

Output: The results which the Armaco Fatty Acid Fractionation Simulator provides include

·         Component wise material balance / Slippages,

·         NETP – Rectification / Stripping,

·         Operating parameters – Reflux, ΔP, F-factor, Liquid Load,

·         Re-boiler & Condenser heat duties

A Fouling Factor has been incorporated, to evaluate older columns operating continuously without cleaning.

Calculation Methodology:

  1. The Fatty Acid Fractionation process operates within 2 defining limits.

         Minimum NETP at infinite or total Reflux.

         Minimum Reflux at Infinite NETP

  1. NETP (min) is a function of component relative volatilities of the feed and top product, derived using the Fenske Equation.
  2. Minimum Reflux is a function of feed component relative volatilities and feed temperature, derived using the Underwood Co-relation.
  3. Reflux Ratio for a separation purity and NETP is derived using the Erbar Maddox or the Gilliland Co-relation. Both co-relations are a function of minimum NETP and minimum Reflux. The Armaco Fatty Acid Fractionation Simulator uses the Erbar Maddox co-relation as it better duplicates operating conditions.
  4. The Design Process is necessarily Iterative. Start with the feed and product relative volatilities, calculate NETP (min), R (min) and reflux for particular NETP, feed and column temperature. Use the Reflux to calculate Vapour / Liquid flows, packing ΔP, F-Factor, Liquid Load and NETP. Generate a new Temperature profile, altering R (min), NETP (min), relative volatilities, and start another calculation cycle.
  5. Equations for ΔP / m and HETP as a function of F-factor and Liquid Load have been developed for 250 m2/m3 packing.
  6. To assess the Fatty Acid Fractionation columns operating without servicing for extended periods, a fouling factor is built into the program. The factor reduces the effective contact area and void space in the packing, increasing the packing HETP and ΔΡ.