Menu
Search
Filters
Close
Menu

02484 LABORATORY INVESTIGATION OF NAPHTHENIC ACID CORROSION UNDER FLOWING CONDITIONS

Picture for 02484 LABORATORY INVESTIGATION OF NAPHTHENIC...
Available for download
Product Number: 51300-02484-SG
ISBN: 02484 2002 CP
Author: Nicholas R. Smart, Andrew P. Rance, and Andrew M. Pritchard
$0.00
$20.00
$20.00
Processing crude oils with high naphthenic acid contents can cause rapid corrosion of carbon steels in the temperature range 250-400°C, under high flow rate conditions. The corrosion rate is not readily predictable on the basis of chemical analysis of the crudes, although it is well known that the relative naphthenic acid and sulfur concentrations are important parameters. In predicting corrosivity, it is therefore important to measure the corrosion behaviour under controlled flowing conditions in environments that simulate as closely as possible those expected in an oil refinery. A refreshed, pressurised rotating cylinder apparatus has been used to measure the corrosion rates of mild steel specimens in a crude oil, using the weight loss method. This paper presents the results of some measurements that were carried out to examine the repeatability of the test technique and to investigate the effect of exposure time on the rate of corrosion. The tests were carried out in Harding crude oil at 340°C using a rotation speed of 1200 rpm, which corresponds to a pipe velocity of approximately 6 metres per second. The results demonstrate that good repeatability can be obtained for measurements in crude oil. The effect of exposure period on the corrosion rate is discussed and the composition of the surface films is described. Application of the test methodology to assessing the corrosivity of crude oils and fractions is outlined.
Processing crude oils with high naphthenic acid contents can cause rapid corrosion of carbon steels in the temperature range 250-400°C, under high flow rate conditions. The corrosion rate is not readily predictable on the basis of chemical analysis of the crudes, although it is well known that the relative naphthenic acid and sulfur concentrations are important parameters. In predicting corrosivity, it is therefore important to measure the corrosion behaviour under controlled flowing conditions in environments that simulate as closely as possible those expected in an oil refinery. A refreshed, pressurised rotating cylinder apparatus has been used to measure the corrosion rates of mild steel specimens in a crude oil, using the weight loss method. This paper presents the results of some measurements that were carried out to examine the repeatability of the test technique and to investigate the effect of exposure time on the rate of corrosion. The tests were carried out in Harding crude oil at 340°C using a rotation speed of 1200 rpm, which corresponds to a pipe velocity of approximately 6 metres per second. The results demonstrate that good repeatability can be obtained for measurements in crude oil. The effect of exposure period on the corrosion rate is discussed and the composition of the surface films is described. Application of the test methodology to assessing the corrosivity of crude oils and fractions is outlined.
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
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 07569 Low Temperature Naphthenic Acid Corrosion Study
Available for download

07569 Low Temperature Naphthenic Acid Corrosion Study

Product Number: 51300-07569-SG
ISBN: 07569 2007 CP
Author: Alec Groysman, Naphtali Brodsky, Dmitry Schmulevich, and Yossi Pener
Publication Date: 2007
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support