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Acid Gas Removal from Natural Gas using Membrane Separation Techniques

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dc.contributor.author Mohamed, Rawah Nasreldeen Ahmed
dc.date.accessioned 2018-10-22T10:51:31Z
dc.date.available 2018-10-22T10:51:31Z
dc.date.issued 2016-08-16
dc.identifier.uri http://repo.uofg.edu.sd/handle/123456789/2532
dc.description A Dissertation Submitted to the University of Gezira in Partial Fulfillment of the Requirements for the Award of the Degree of Master of Science in Chemical Engineering Department of Chemical Engineering and Chemical Technology ,Faculty of Engineering and Technology August, 2016 en_US
dc.description.abstract Natural gas has become one of the most desired energy sources after oil discovery for its efficient combustion and low carbon dioxide (CO2) emissions. The use of polymeric membrane technology is an exciting approach toward the removal of acid gases, namely (CO2 and H2S), from natural gas streams. Polymer membranes exhibit good mechanical, thermal and chemical stabilities. The aims of this study are: removal of the acid gases (CO2 and H2S) from natural gas by membrane separation technology, analysis of membrane process by developing a program and solving it using (Mathcad software) and comparison of the results of the removal of acid gases from the Sudanese natural gas to these obtained for another natural gas. Removal of acid gases in Sudanese natural gas (CO2=11mol%, H2S=0mol%) was investigated using cellulose acetate membrane also a case of an acid gas namely the (Lacq (France)) natural gas of composition (CO2=9.3mol%, H2S=15.3mol%) was studied for comparison. The analysis procedure was done by using Mathcad software. Three cases were investigated: The effect of changing the fraction of feed permeated keeping the membrane thickness and pressure driving force constants, the effect of changing the pressure driving force keeping the fraction of feed permeated and membrane thickness constants and the effect of changing the membrane thickness keeping the pressure driving force and the fraction of feed permeated constants. Before the separation, the total input of CO2 to the cellulose acetate membrane is 110 mole/hr. After separation it was found that the CO2 concentration in permeate is equal to 23.3 mol% and that in the retentate is equal to 86.4mol%. From the results it is noticed that the average required membrane area to remove CO2 from a feed rate of 1000 mole/hr of Sudanese natural gas is (4038 m2) which is smaller than the average required membrane area to remove CO2 from Lacq (France) natural gas (4070 m2). A cellulose acetate membrane of thickness 1000 Å was used for the area calculations. In conclusion it was found that cellulose acetate membrane is more suitable for the removal of CO2 from Sudanese natural gas than (Lacq (France)) natural gas. It is recommended to study other suitable polymeric membranes to produce high purity natural gas in Sudan. en_US
dc.description.sponsorship Hamid Mohamed Mustafa (Main Supervisor) Imad Eldeen Abdelmoniem Mahajoub (Co-supervisor) en_US
dc.language.iso en en_US
dc.publisher University of Gezira en_US
dc.subject Natural gas en_US
dc.subject energy sources en_US
dc.subject acid gases en_US
dc.subject Polymer membranes en_US
dc.subject chemical stabilities en_US
dc.title Acid Gas Removal from Natural Gas using Membrane Separation Techniques en_US
dc.type Thesis en_US

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