Energy efficiency improvement in the natural gas liquids fractionation unit

Ahmad Nafais Rahimi, Mohd Faris Mustafa, Muhammad Zakwan Zaine, Norazana Ibrahim, Kamarul Asri Ibrahim, Noor Yusmiza Yusoff, Eid M. Al-Mutairi, Mohd Kamaruddin Abd Hamid*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)peer-review

4 Citations (Scopus)


The objective of this paper is to present the study and analysis of the energy efficiency for the natural gas liquids (NGLs) fractionation sequence by using driving force method. To perform the studies and analysis, the energy efficient NGLs fractionation plant methodology is developed. Hence, the methodology consists of four hierarchical steps; Step 1: Existing Sequence Energy Analysis, Step 2: Optimal Sequence Determination, Step 3: Optimal Sequence Energy Analysis and Step 4: Energy Comparison. The capability of this methodology is tested in designing an optimal energy efficient distillation columns sequence of NGLs fractionation unit. By using the driving force method, maximum of 21 % energy reduction is able to be achieved by changing the sequence of NGLs fractionation unit. It can be concluded that, the sequence determined by the driving force method is able to reduce energy used for NGLs fractionation. These findings show that the methodology is able to design energy efficient distillation columns for NGLs fractionation sequence in an easy, practical and systematic manner.

Original languageEnglish
Title of host publicationChemical Engineering Transactions
PublisherItalian Association of Chemical Engineering
Number of pages6
ISBN (Print)9788895608365
Publication statusPublished - Oct 2015

Publication series

NameChemical Engineering Transactions
ISSN (Electronic)2283-9216

ASJC Scopus subject areas

  • General Chemical Engineering


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