Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

Use GIVING24 at checkout to save 20% on eCourses and books (some exclusions apply)!

07569 Low Temperature Naphthenic Acid Corrosion Study

Picture for 07569 Low Temperature Naphthenic Acid Corrosion Study
Available for download
Product Number: 51300-07569-SG
ISBN: 07569 2007 CP
Author: Alec Groysman, Naphtali Brodsky, Dmitry Schmulevich, and Yossi Pener
Publication Date: 2007
$0.00
$20.00
$20.00
The aim of this work is to define the corrosiveness of naphthenic acids and to examine a nonphosphorus corrosion inhibitor for low temperature (~ 200oC) naphthenic acid corrosion. Corrosiveness of NA is a function of their molecular weight (boiling point), and temperature. Corrosiveness of seven pure NA, twelve aliphatic and two aromatic organic acids, and fractions of NA distilled from industrial NA mixtures of three suppliers “F”, “A”, and “M”, was examined at their boiling points and at 195oC. Corrosion rates of carbon steel in contact with boiling aliphatic organic acids were 12 to 90 mm/year, but in pure boiling NA were 100 to 400 mm/year. Two aliphatic organic acids, heptanoic and nonanoic, showed corrosiveness similar to pure NA with corrosion rates 179 and 195 mm/year, respectively. Two aromatic hydrocinnamic (benzenepropanoic) and 6-phenylhexanoic acids showed extremely high corrosiveness in carbon steel: 646 and 638 mm/year respectively. The corrosiveness of the fractions from “F”, “A”, and “M” showed a maximum at about 300oC. Correlation between total acid number (TAN) and corrosiveness of NA fractions was not found. An industrial sulfur-based corrosion inhibitor showed lower efficiency (80 to 85%) than the phosphorus inhibitor (94 to 99%) and did not deteriorate catalyst activity and fuel quality.
The aim of this work is to define the corrosiveness of naphthenic acids and to examine a nonphosphorus corrosion inhibitor for low temperature (~ 200oC) naphthenic acid corrosion. Corrosiveness of NA is a function of their molecular weight (boiling point), and temperature. Corrosiveness of seven pure NA, twelve aliphatic and two aromatic organic acids, and fractions of NA distilled from industrial NA mixtures of three suppliers “F”, “A”, and “M”, was examined at their boiling points and at 195oC. Corrosion rates of carbon steel in contact with boiling aliphatic organic acids were 12 to 90 mm/year, but in pure boiling NA were 100 to 400 mm/year. Two aliphatic organic acids, heptanoic and nonanoic, showed corrosiveness similar to pure NA with corrosion rates 179 and 195 mm/year, respectively. Two aromatic hydrocinnamic (benzenepropanoic) and 6-phenylhexanoic acids showed extremely high corrosiveness in carbon steel: 646 and 638 mm/year respectively. The corrosiveness of the fractions from “F”, “A”, and “M” showed a maximum at about 300oC. Correlation between total acid number (TAN) and corrosiveness of NA fractions was not found. An industrial sulfur-based corrosion inhibitor showed lower efficiency (80 to 85%) than the phosphorus inhibitor (94 to 99%) and did not deteriorate catalyst activity and fuel quality.
Product tags
Also Purchased
Picture for 99380 CRITICAL REVIEW OF NAPHTHENIC ACID
Available for download

99380 CRITICAL REVIEW OF NAPHTHENIC ACID CORROSION

Product Number: 51300-99380-SG
ISBN: 99380 1999 CP
Author: Saadedine Tebbal
$20.00
Picture for Naphthenic Acid Corrosion in a High TAN Condensing Overhead System
Available for download

Naphthenic Acid Corrosion in a High TAN Condensing Overhead System

Product Number: 51317--9095-SG
ISBN: 9095 2017 CP
Author: Kwadwo Sarpong
Publication Date: 2017
$20.00

A case history where an ethoxylated thio-phosphate ester was successfully used to mitigate low temperature naphthenic acid corrosion in a high total acid number condensing overhead system in which a traditional imidazoline corrosion inhibitor failed.
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
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