Sanni, Samuel Eshorame and Agboola, Oluranti and Fagbiele, Omololu Oluwatobi and Yusuf, Esther Ojima and Emetere, Moses (2019) Optimization of natural gas treatment for the removal of CO2 and H2S in a novel alkaline-DEA hybrid scrubber. Egyptian Journal of Petroleum.
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Abstract
Contaminated natural gas when carelessly handled, often poses human and equipment related problems ranging from lung and skin infections to corrosion, equipment fouling/failure and reduction in gas quality owing to the presence of acid gases. In this work, four natural gas (NG) samples were treated to remove CO2 and H2S using 10–50% Di-Ethanolamine (DEA) solutions mixed with 5% w/w 0.1 M calcium hydroxide. The treatment process gave increased acid gas removal at increased DEA concentrations. Based on the simulation results, cost effective treatment of the gas samples, require 0.1 M Ca(OH)2 and DEA mixed solutions in the range of 27.4–30%. The optimum mixture concentration for the gas treatment was found to be 30% Ca(OH)2-DEA hybrid solution with feed gas flow rate of 830 kscf/h. In terms of pressure energy consumption, pumping the hybrid mix at 830 kscf/h will save pressure energy as compared to pumping the feed gas at 1024.58 kscf/h since the lower and upper limit feed gas flow rates gave similar results. The optimum pressure for NG treatment was found to be in the range of 2–2.7 bar (2–2.7*105 kgm�1 s�2).Contaminated natural gas when carelessly handled, often poses human and equipment related problems ranging from lung and skin infections to corrosion, equipment fouling/failure and reduction in gas quality owing to the presence of acid gases. In this work, four natural gas (NG) samples were treated to remove CO2 and H2S using 10–50% Di-Ethanolamine (DEA) solutions mixed with 5% w/w 0.1 M calcium hydroxide. The treatment process gave increased acid gas removal at increased DEA concentrations. Based on the simulation results, cost effective treatment of the gas samples, require 0.1 M Ca(OH)2 and DEA mixed solutions in the range of 27.4–30%. The optimum mixture concentration for the gas treatment was found to be 30% Ca(OH)2-DEA hybrid solution with feed gas flow rate of 830 kscf/h. In terms of pressure energy consumption, pumping the hybrid mix at 830 kscf/h will save pressure energy as compared to pumping the feed gas at 1024.58 kscf/h since the lower and upper limit feed gas flow rates gave similar results. The optimum pressure for NG treatment was found to be in the range of 2–2.7 bar (2–2.7*105 kgm�1 s�2).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Absorption Acid gas Gas treatment Process optimization Process simulation |
| Subjects: | Q Science > QC Physics T Technology > TP Chemical technology |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences Faculty of Engineering, Science and Mathematics > School of Physics |
| Depositing User: | Mrs Patricia Nwokealisi |
| Date Deposited: | 24 Feb 2020 07:58 |
| Last Modified: | 24 Feb 2020 07:58 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/13127 |
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