Search
Filters
Close

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

51316-7302-Mechanism of High Temperature Corrosion by Model Naphthenic Acids

This work demonstrates that the pretreatment of carbon steel and 9Cr alloy with model acids yields iron oxide scales with different morphology and chemical composition as determined by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM).

Product Number: 51316-7302-SG
ISBN: 7302 2016 CP
Author: Peng Jin
Publication Date: 2016
$0.00
$20.00
$20.00

Naphthenic acid (NAP) corrosion is one of the major concerns for corrosion engineers in refineries, particularly with the increasing acidity in “opportunity crudes”. However, complex compositions of NAP in crude oil make it difficult to evaluate accurately their corrosive behavior. In the present study, several model acids, including 4-phenylbutyric acid, 1-naphthoic acid, and 4-cyclohexyl pentanoic acid, have been tested in lab scale experiments previous applied to real crude fractions. Pretreatment/challenge protocol tests the corrosive behavior of the model acids under temperature and velocity ranges close to those encountered in refineries. This work demonstrates that the pretreatment of carbon steel and 9Cralloy with model acids yields iron oxide scales with different morphology and chemical composition as determined by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). It is postulated that the formation of the iron oxide scale resulted from the decomposition of iron naphthenate on the surface at high temperatures.

Key words: downloadable, naphthenic acid corrosion, iron oxide, crude fractions

 

Naphthenic acid (NAP) corrosion is one of the major concerns for corrosion engineers in refineries, particularly with the increasing acidity in “opportunity crudes”. However, complex compositions of NAP in crude oil make it difficult to evaluate accurately their corrosive behavior. In the present study, several model acids, including 4-phenylbutyric acid, 1-naphthoic acid, and 4-cyclohexyl pentanoic acid, have been tested in lab scale experiments previous applied to real crude fractions. Pretreatment/challenge protocol tests the corrosive behavior of the model acids under temperature and velocity ranges close to those encountered in refineries. This work demonstrates that the pretreatment of carbon steel and 9Cralloy with model acids yields iron oxide scales with different morphology and chemical composition as determined by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). It is postulated that the formation of the iron oxide scale resulted from the decomposition of iron naphthenate on the surface at high temperatures.

Key words: downloadable, naphthenic acid corrosion, iron oxide, crude fractions

 

Also Purchased
Picture for 98579 FACTORS CONTROLLING NAPHTHENIC ACID
Available for download

98579 FACTORS CONTROLLING NAPHTHENIC ACID CORROSION

Product Number: 51300-98579-SG
ISBN: 98579 1998 CP
Author: E Slavcheva, B Shone, A Turnbull
$20.00
Picture for 02555 A COMPREHENSIVE STUDY ON NAPHTHENIC...
Available for download

02555 A COMPREHENSIVE STUDY ON NAPHTHENIC ACID CORROSION

Product Number: 51300-02555-SG
ISBN: 02555 2002 CP
Author: R.D. Kane and M.S. Cayard
$20.00
Picture for 96218 NAPHTHENIC ACID CORROSION AND ITS
Available for download

96218 NAPHTHENIC ACID CORROSION AND ITS CONTROL

Product Number: 51300-96218-SG
ISBN: 96218 1996 CP
Author: MICHEAL J. ZETLMEISL
$20.00