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Azmi, Azlin Suhaida (2001) HEN OPTIMISATION FOR CRUDE OIL DISTILLATION UNIT. Masters thesis, Universiti Teknologi Petronas.

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The need for energy saving and reduction of gas emissions makes Process Integration an attractive technology to improve energy efficiency in grassroot and retrofit designs. One very important field for energy improvement is the heat exchanger network retrofit projects, in which to maximise the existing heat recovery and at the same time keeping the payback time as short as possible. In this dissertation, retrofit Heat Exchanger Network design procedure for crude oil distillation unit is presented. The heat exchanger network ofindonesia's oil refinery is studied to improve the energy recovery and performance in the existing network. The HEN analysis begins with the data extraction from existing network. Data of heating and cooling requirement of the process are obtained from simulation and from the process plant. Cost and economic data required for the analysis is specified. From thermodynamic data obtained from extraction, composite curve is set. From the composite curve, scope of energy recovery can be determined. Pinch analysis than can be carried out base on economic data. By using incremental area efficiency, target for network design can be set. The minimum approach temperature, which is set from targeting, is used for retrofit design using network pinch method. Set of modification is carried out in SPRINT, UMIST software, to increase energy recovery of the process. The set of modification are then optimised in SRINT. The design options are compared and evaluated and the retrofit design is suggested. The suggested modification has reduced of energy at about 39% with the payback period of 6 months. The modification gives the annual total saving of 336,705 $/y with 159,167$.

Item Type: Thesis (Masters)
Academic Subject : Academic Department - Information Communication Technology
Subject: T Technology > T Technology (General)
Divisions: Sciences and Information Technology > Computer and Information Sciences
Depositing User: Users 2053 not found.
Date Deposited: 30 Sep 2013 16:55
Last Modified: 25 Jan 2017 09:47
URI: http://utpedia.utp.edu.my/id/eprint/7808

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