(293e) Designing Edible Oil Stripping Columns
AIChE Annual Meeting
2017
2017 Annual Meeting
Separations Division
In Honor of Tony Cai of FRI
Tuesday, October 31, 2017 - 9:40am to 10:05am
A theoretically founded pressure drop expression (introduced at AIChE 2016 Spring Meeting) that accounts for peculiarities associated with the flow of a very low density gas that under laminar flow conditions ascends through the packed bed at a rather high effective velocity has served as the cornerstone for building of a simple predictive model, which enables a theoretically founded approach to conceptual (re)design of packed columns for edible oil stripping.
The model is arranged as a sequential algorithm with pressure drop estimation in inner loop and the bed height calculation procedure utilizing HTU-NTU approach in outer loop, which, implemented in Excel environment, eases performing numerous calculations required to evaluate properly the effect of design variables, such as operating pressure and temperature, packing size, and stripping hot steam flow rate, aiming at establishing the optimal bed height to diameter ratio for given application. Basic features of this model and peculiarities related to utilization of structured packings in deep vacuum applications will be illustrated and demonstrated using typical industrial cases.
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