eprintid: 5700
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/57/00
datestamp: 2023-11-09 16:17:26
lastmod: 2023-11-09 16:17:26
status_changed: 2023-11-09 16:03:37
type: article
metadata_visibility: show
creators_name: Le, S.N.T.
creators_name: Nguyen, K.V.
creators_name: Mahadzir, S.B.
creators_name: Chen, C.-L.
title: Applying exergy analysis for simulation and optimization of the iso-butane recovery process from liquefied petroleum gas
ispublished: pub
keywords: Butane; Computer software; Costs; Distillation; Distillation columns; Economic and social effects; Energy conservation; Energy efficiency; Energy utilization; Equations of state; Exergy; Investments; Liquefied petroleum gas; Recovery, Distillation process; Dividing wall columns; Equation of state; Liquefied petroleum gas (LPG); Peng-Robinson EOS; Process configuration; Process simulations; Simulation and optimization, Cost benefit analysis
note: cited By 0
abstract: This paper presents the analysis of several distillation process configurations for the recovery of isobutane from a mixture of iso-butane and n-butane from liquefied petroleum gas (LPG), which is produced at Dinh Co GPP in Ba Ria Vung Tau - Vietnam. This project uses the method of process simulations followed by exergy and cost analysis in order to compare the efficiency of energy utilization among the process configuration options. Simulation of a base case and two other distillation process configuration options for separating iso-butane from LPG are implemented via Aspen HYSYS software using Peng-Robinson EOS (equation of state). Exergy is a thermodynamic concept based on the first and second laws to identify process configuration options that use energy inefficiently by locating and quantifying energy wasted through irreversibility or exergy lost. For a base case, the conventional distillation column is simulated with the specified iso-butane product drawn as the side stream. The other process configuration options are a direct sequence distillation and a dividing wall column distillation. The simulation results of the columns are recorded with the purity specifications of about 95  of mass iso-butane in product streams and the recovery ratio of iso-butane exceeding 95 . Then exergy analysis is conducted for each of the three distillation process configurations to find the process configuration in the scope of most efficient energy usage. Unfortunately, the changes in process configuration are accompanied by the adverse effect of capital cost. Therefore a trade-off of energy savings and additional investment expenditure arises. Using a shot-cut cost calculation, it is possible to make the best decision on the distillation process configuration for the recovery of iso-butane from an LPG stream. Copyright © 2015, AIDIC Servizi S.r.l.,.
date: 2015
publisher: Italian Association of Chemical Engineering - AIDIC
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946124002&doi=10.3303%2fCET1545104&partnerID=40&md5=b3057610a4298125e0c6a3fa644cc37b
id_number: 10.3303/CET1545104
full_text_status: none
publication: Chemical Engineering Transactions
volume: 45
pagerange: 619-624
refereed: TRUE
isbn: 9788895608365
issn: 22839216
citation:   Le, S.N.T. and Nguyen, K.V. and Mahadzir, S.B. and Chen, C.-L.  (2015) Applying exergy analysis for simulation and optimization of the iso-butane recovery process from liquefied petroleum gas.  Chemical Engineering Transactions, 45.  pp. 619-624.  ISSN 22839216