Understanding corrosion in alkanolamine gas treating plants: Part 2

Journal Article · Sat May 01 04:00:00 EDT 1993 · Hydrocarbon Processing; (United States)

OSTI ID:6295319

DuPart, M S; Bacon, T R; Edwards, D J ^[1]

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1. Dow Chemical, Freeport, TX (United States)

Proper diagnosis is half the problem and solution in alkanolamine corrosion. In Part 1, several common corrosion mechanisms were identified with amine systems. With many possible mechanisms to choose from, proper corrosion diagnosis is a cumbersome task. Unfortunately, the designer or the operations engineer must knowledgeably sift through the plant data and correctly match the symptoms or observations with the probable cause and prescribe corrective actions(s). The case histories given here review actual plant situations and the observations from inspection. They give great insight into a costly problem. The examples are definite plant notebook additions for later references. As in many processes, better designs reduce costly downtime and lost production, improve equipment life and minimize operation accidents or injuries. A better understanding of parameters affecting corrosion with amines present improves process operations and allows a better amine selection. It is concluded that corrosion in alkanolamine gas treating plants can be controlled and minimized with proper plant design, correct operating parameters and monitoring the operation frequently for unplanned process and amine excursions. The keys are minimizing acid gas flashing and understanding other factors that can enhance corrosivity of amine solutions.

• OSTI ID: 6295319
• Journal Information: Hydrocarbon Processing; (United States), Journal Name: Hydrocarbon Processing; (United States) Vol. 72:5; ISSN HYPRAX; ISSN 0018-8190
• Country of Publication: United States
• Language: English

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CARBON OXIDES
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CHALCOGENIDES
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