Iranian Chemical Engineering Journal

Iranian Chemical Engineering Journal

Comparison of the Performance of Different Anionic Resins in the Removal of Thermally Stable Salts in the Amin Unit of Ilam Gas Refining Company

Document Type : Original Article

Authors
M. Gravand
S. Asleshirin
Department of Chemical Engineering, Borujerd Branch, Islamic Azad University, Borujerd, Iran
10.22034/ijche.2024.411604.1342
Abstract
Thermally stable salts (HSS) produced in the process of gas sweetening in amine solution lead to problems such as amine inactivation, equipment corrosion and system capacity reduction, therefore due to the high amount of thermally stable salt in amine solution (MDEA) Ilam Gas Refining Company, removal of thermally stable salts by strong anionic resin beds INDION GS 300, Amberjet 4200 and Purolite A400 was carried out with the aim of selecting the most suitable resin to remove thermally stable salts of amine solution.The performance of the mentioned resins in the removal of thermally stable salts was investigated in three stages: primary reduction of resin (removal of primary chloride), reduction of amine solution (removal of thermally stable salt anions) and secondary reduction of resins. Finally, the anionic resin Amberjet 4200, due to the importance of parameters such as the lowest consumption of sodium hydroxide solution in the primary regeneration stage (4200 ml), less time for primary regeneration (150 min), the maximum amount of reduced amine solution (7400 ml), the maximum duration Regeneration time (360 min) the maximum removal rate of thermally stable salts (99.2%) in 30 minutes at the beginning of the amine solution regeneration process, the best performance in removing thermally stable salt anions after secondary reduction and economic issues compared to Two resins, Purolite A400 and INDION GS 300 were identified as the most suitable resins available for the reduction of amine solution.
Keywords
Amine Solution
Thermally Stable Salts
Anionic Resin
Ion Exchange Method
Ilam Gas Refining Company
Subjects
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Iranian Chemical Engineering Journal
Volume 23, Issue 136
January and February 2025
Pages 47-58