Screening and Optimization of Gas Sweetening Process Parameters with MDEA-PZ Solvent using Plackett-Burman Approach

Roshdi, S.; Bairami, A.; Abbasi, I.

doi:10.22034/ijche.2023.402335.1494

Document Type : Regular Article

Authors

¹ Uni.urmia

² urmia university of technology

³ Chemical Engineering Department, Faculty of Chemical and petroleum engineering, tabriz university, Tabriz, Iran

https://doi.org/10.22034/ijche.2023.402335.1494

Abstract

Amine gas sweetening is a process in which acidic gases including hydrogen sulfide (H₂S) and carbon dioxide (CO₂) are removed by a solution of water and amines. Many parameters influence the sweetening process. Knowledge about the important parameters and their degree of importance is of great interest to achieve the optimum condition. Nine effective parameters including the CO₂ and H₂S contents of the feed, the temperature and pressure of the feed, the tray number and pressure of the absorber, the lean amine temperature, and the concentrations of Methyl Diethanol Amine (MDEA), and Piperazine (PZ) have been chosen as effective variables, while CO₂/H₂S recovery and total process energy have been considered as response variables. After the verification of the present study with real plant data, the experimental layout was designed by the Plackett-Burman approach, and the model validation has been confirmed by ANOVA. The results of the present study showed that the most effective parameters in the CO₂ recovery are the absorber tray number and PZ concentration, while in the H₂S recovery, the absorber tray number is the most important variable. Regarding the total energy of the proces, feed temperature, PZ concentration, absorber tray number, lean amine temperature, and feed pressure are obtained as important variables. The optimum condition has been obtained in the feed and absorber pressures of 5758.9, and 1458.9 kPa respectively, with the feed and lean amine temperature of 0.11 and 50 respectively, the concentrations of 17.57 and 3.8 wt.% of MDEA and PZ respectively, the absorber tray number of 20 and the mass flow rates of 792 and 103.6 kg/h of CO₂ and H₂S respectively. Under the mentioned conditions, the CO₂ and H₂S recovery were achieved at 99.99 % while the total energy of the process was 3.56 Mw.

Keywords

Main Subjects

Separation Technology,

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Iranian Journal of Chemical Engineering(IJChE)

Screening and Optimization of Gas Sweetening Process Parameters with MDEA-PZ Solvent using Plackett-Burman Approach

References

References

Volume 20, Issue 3
November 2023
Pages 70-89

Screening and Optimization of Gas Sweetening Process Parameters with MDEA-PZ Solvent using Plackett-Burman Approach

References

References

Volume 20, Issue 3November 2023Pages 70-89

Volume 20, Issue 3
November 2023
Pages 70-89