TYPES OF CORROSION OBSERVED IN AMINE GAS SWEETENING UNITS, THEIR CHARACTERISTIC CHEMICAL REACTIONS, AND CORROSION-PRONE AREAS OF THE EQUIPMENT
Keywords:
amine gas sweetening unit, corrosion, H₂S, CO₂, iron sulfide, carbonate corrosion, thermal decomposition, organic acids, equipment protection.Abstract
The article analyzes the main types of corrosion observed in amine gas sweetening units, their chemical reaction mechanisms, and corrosion-prone areas of the equipment. The study highlights the carbonate corrosion of carbon steels caused by CO₂, the sulfide corrosion induced by H₂S, and the high-temperature acidic corrosion resulting from the thermal degradation of amines. The lower section of the absorber, the desorber, the reboiler, and the circulation pipelines and pumps were identified as the most corrosion-prone zones. It is emphasized that proper selection of technological and chemical protection methods is essential for minimizing corrosion in amine gas treatment systems.
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