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Mass Transfer Modelling for Compact Hybrid Membrane-Absorption Processes in Removal ofC02 from Natural Gas

Kamaruzaman, Muhammad Kamal (2004) Mass Transfer Modelling for Compact Hybrid Membrane-Absorption Processes in Removal ofC02 from Natural Gas. Universiti Teknologi Petronas. (Unpublished)

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Abstract

The removal CO2 from natural gas has been the target for many gas processing industries. This is due to its importance for increasing the calorific value of natural gas (NG) and increasing the pipeline lifetime since CO2 is having corrosive properties. The main objective of this work is to model and predict the mass transfer for the compact hybrid membrane-absorption processes. A simulation model was developed using MathCad which able to predict the CO2 transport across membrane, followed by absorption to amine solution. The overall mass transfer coefficient at the membrane and liquid side was analyzed by varying the operating parameters such as the pressure and the temperature of the process. The membrane characteristics such as the pore size, membrane thickness, porosity and tortuosity are also considered in studying the mass transfer of CO2. The significant value of overall mass transfer coefficient in the study signifies and shows that separation is very favourable for compact hybrid system. Generally, the overall mass transfer coefficient for the compact hybrid membrane-absorption processes was found to decrease as the operating temperature increased. The overall mass transfer coefficient increases when the operating pressure increased. However, the increase in membrane thickness would reduce the overall mass transfer coefficient. In addition, when the porosity of the membrane increases, the overall mass transfer coefficient gradually increased. Lastly, the best operating condition for the compact hybrid membrane-absorption processes is in the region of low temperature between 300K and 400K and in the region of high pressure between 10 bar to 30 bar. In this range, the magnitude of the overall mass transfer coefficient is in the magnitude of 10"6 which is comparable with other researchers work such as the study and model developed by Li and Teo (1996).

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Biofuel
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
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/7504

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