The most important vessel in an amine unit is the inlet gas coalecer as it protects the process from undesired feed contaminants. In addition rich amine liquid coalecers are important to remove any hydrocarbons in the rich amine stream.
Rich amine and lean amine filtration are have different purposes and should be addressed separately. Correct chemical compatibility and proper media efficiency matching the suspended solids in the amine solvent are key for effective filtration.
Activated carbon removes a variety of dissolved contaminants in the amine solvent. From surfactants to process additives and amine degradation products , these contaminants often cause foaming, leading to amine solvent losses.
Amine losses is a problem associated with treating LPG and NGL. Amine solvent losses not only cause economic losses but also impact downstream units. Amine solvent recovery systems are capable of minimizing up to 95% of losses.
Antifoams minimize foaming in amine solvents. Amine units require a specific antifoam to eliminate foam effectively. Emulsion breakers on the other hand separate emulsions of the amine solvent with hydrocarbons such as LPG & NGL.
Corrosion is a common process taking place in most amine units. Determining the source of corrosion is critical for implementing correct corrosion control progams that include process changes, monitorng and corrosion inhibitors.
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