Tesoro refinery improves operation efficiency in amine treating unit

The Tesoro refinery, Kapolei, Ha., improved operation of its hydrogen plant amine unit by switching to a specialty amine. The methyldiethanolamine (MDEA)-based solvent reduced system corrosion, and lowered additive and solvent makeup rates.The plant significantly lowered iron losses and corrosion since converting to the specialty amine in August 1999. Because the unit experienced much longer operating times without the need for solvent makeup—38 months of operation—overall operational costs were significantly reduced.Tesoro refineryTesoro's hydrogen plant amine unit has used several different amine solvents in the past. Similar to other deep CO2-removal amine systems, the ...

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