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Recent Patents on Corrosion Science (Discontinued)

Editor-in-Chief

ISSN (Print): 2210-6839
ISSN (Online): 1877-6108

Naphthenic Acid Corrosion Control Strategies in Refineries: A Review of Recent Patents

Author(s): Yongfeng Duan, Fengchang Yu and Zhongqiang Cui

Volume 2, Issue 2, 2012

Page: [142 - 147] Pages: 6

DOI: 10.2174/2210683911202020142

Price: $65

Abstract

A review of recent patents on naphthenic acid corrosion (NAC) control strategies in refineries from 2000 to 2011 is presented in this paper. The patents mainly concentrate on corrosion inhibitors and removal of naphthenic acids. The corrosion inhibitor consists of phosphorous inhibitors and non-phosphorous inhibitors; the removal of naphthenic acids includes solvent extraction, chemical conversion, thermal treatment, and hydroprocessing. Advantages and disadvantages of various NAC control strategies are outlined. In addition, a further development of NAC control strategies is prospected.

Keywords: Naphthenic acid corrosion, corrosion inhibitors, removal, thermal treatment


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