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Accessible Unlicensed Requires Authentication Published by De Gruyter January 8, 2016

Performance Investigation of Membrane Process in Natural Gas sweeting by Membrane Process: Modeling Study

Kamran Ghasemzadeh, Mostafa Jafari, Amir sari and Ali A. Babalou

Abstract

The main purpose of this work is the numerical investigation of PEBX membrane performance for natural gas sweeting. Hence, a single-stage process for PEBX membrane was considered in various flow patterns, namely, cocurrent, cross flow and countercurrent to separate a typical natural gas mixture. To this target, a black box numerical model was extended for the ASPEN HYSYS commercial package and also its validation was realized by litterature experimental data. The validation results indicated a good agreement between thoritical results and experimental data. After model validation, the effect of the some significant operating parameters (pressure gradient, stage cut and membrane area) on the performance of PEBX membrane was analysed in terms of acid gases removal percentage. The simulation results presented a noticeable performance of PEBX membrane to produce high purity CH4. In particular, concerning the stage cut effect, it was found that the CO2 and H2S compositions in the permeate side were decreased through the enhancment of stage cut from 0.005 to 0.03, whereas the CH4 composition increased for whole the flow patterns. Moreover, a similar effect was achived for membrane surface area. On the other hand, the transmembrane pressure effect was positive on the PEBX membrane performance during natural gas sweeting.

References

1. Baker RW, Lokhandwala K. NG processing with membranes: an overview. Ind Eng Chem Res 2008;4: 2109–202.Search in Google Scholar

2. Hao J, Rice PA, Stern SA. Membrane processes for the removal of acid gases from natural gas. II. Effect of operating conditions, economic parameters, and membrane properties. J Membr Sci 1993;81:239–52.Search in Google Scholar

3. Safari MH, Ghanizadeh A, Montazer Rahmati MM. Optimization of membrane-based CO2-removal form NG using simple models considering both pressure and temperature effect. Int J Greenhouse Gas Control 2008;3:3–10.Search in Google Scholar

4. Datta AK, Sen PK. Optimization of membrane unit for removing carbon dioxide from natural gas. J Membr Sci 2006;283:291–8.Search in Google Scholar

5. Elbenzer SA. “Removal of carbon dioxide from NG for LPG production”, Semester project work, institute of petroleum technology, Norwegian university of science and technology, Norway, 2005.Search in Google Scholar

6. Maddox RN. Gas and liquid sweeting, 2nd ed. Campell petroleum series, 1974.Search in Google Scholar

7. Koros WJ, Chern RT. Separation of gaseous mixture using polymer membranes. In: Rousseau RW, editor. Handbook of separation process technology. New York:Wiley, 1987:863–953.Search in Google Scholar

8. Shindo Y, Hakuta T, Yoshitome H, Inoue H. Calculation methods for multicomponent gas separation by permeation. Sep. Sci. Technol 1985;20:445–9.Search in Google Scholar

9. Chatterjee G, Houde AA, Stern SA. Poly (ether amide) and Poly (ether urethane urea) membranes with high H2S/CH4 selectivity. J Membr Sci 1997;135:99–106.Search in Google Scholar

Received: 2015-12-2
Revised: 2015-12-5
Accepted: 2015-12-6
Published Online: 2016-1-8
Published in Print: 2016-3-1

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