A Hybrid Approach to Reconstruct a Complete TBP Curve from Blended Gas Condensates


M Shuhaimi(1), M.R Naim(2*)

(1) Chemical Engineering Department, Universiti Teknologi PETRONAS Bandar Seri Iskandar Perak, Malaysia
(2) Group Technology Solutions, R and T Division, PETRONAS
(*) Corresponding Author


Successful operations of a natural gas condensate fractionation unit requires the feed’s True Boiling Point (TBP) curve to be reconstructed and its’ bulk properties to be predicted. In this work, a hybrid approach combining the Generalised Distribution Model (GDM) and Pseudo-component Linear Equation (PcLE) methods are proposed. The proposed method is simple and requires limited information from readily available laboratory analysis data. The method was demonstrated using a refinery case study and found that the hybrid approach were able to reconstruct a pure component TBP curve from the blended feed data with error of less than 5%. Consequently the approach is very useful during preliminary stage for refinery engineers to explore and exploit the operational flexibility in a current distillation column to maximise the desired product yields.


crude blend; pseudo-component; condensates; refinery; distillation.

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DOI: https://doi.org/10.22146/ajche.50101

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ASEAN Journal of Chemical Engineering  (print ISSN 1655-4418; online ISSN 2655-5409) is published by Chemical Engineering Department, Faculty of Engineering, Universitas Gadjah Mada.