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Stress Analysis of Steam-Methane Reformer Tube

Hassan, Cik Suhana (2008) Stress Analysis of Steam-Methane Reformer Tube. Universiti Teknologi Petronas. (Unpublished)

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Abstract

Reformer tubes are designed to last at least 100,000 hours (11.4 years) of operation, but frequently, some of the tubes in the furnace fail prematurely. Most of the failures occur due to the high temperature and pressure developed within the tubes. Thus, the use of Finite Element Analysis (FEA) software to model, simulate and draw meaningful conclusion from the actual process conditions of the reformer tubes can reveal important information regarding the mechanical and thermal stress response. The main objective of this project is to simulate the combined stress and temperature profiles developed within the reformer tube. This project involves modeling the mechanical and thermal loadings present in the tube as well as simulating the stress distribution across the tube's thickness and length. FEA using ANSYS utilized to analyze stress and temperature profile of the tube. Literature review of reformer tube has been performed and data needed has been identified. Stresses have been computed using ANSYS and verified with theoretical value. It has been seen that the temperature difference across the tube length resulted from the non-unifonn heat transfer coefficient can be considerable causing high thermal stresses. Maximum von mises stress equal to 142.61 MPa developed at the inner surface of the entrance region. The stress then compared with the tensile strength of the tube and it is showed that the tube is able to sustain the stress without fracture.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Petroleum
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 2053 not found.
Date Deposited: 30 Sep 2013 16:55
Last Modified: 25 Jan 2017 09:45
URI: http://utpedia.utp.edu.my/id/eprint/7398

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