Menu
Search
Filters
Close
Menu

Abnormal Hydrotreater Distillation Sulfidation Corrosion At Stripper Reboiler Outlet - Investigation Study

Picture for Abnormal Hydrotreater Distillation Sulfidation Corrosion At Stripper Reboiler Outlet - Investigation Study
Available for download
Product Number: 51321-16763-SG
Author: Omar S. Alabdulgader
Publication Date: 2021
$0.00
$20.00
$20.00

This paper presents the analysis and findings of a recent corrosion investigation study of abnormal corrosion rates experienced at the distillation section of a Diesel Hydrotreater Unit, particularly at the stripper column reboiler outlet piping. As a hydrogen-free and low-sulfur environment, Sulfidation corrosion is not usually anticipated to take place with such severity at this section of the process. During the investigation, it was found that similar incidents of high corrosion rates were also reported by industry at different sections of Hydrotreater Distillation which could not be accurately interpolated using either Modified McConomy or Couper-Gorman
curves. As per API-939C, the mechanism of this type of corrosion is still not well understood. As a result, a newly developed based-on-experience curves were utilized to estimate the levels of H2S that have existed at the reboiler outlet piping to result in such high corrosion rates. The estimated H2S levels were then validated through advanced process simulation. Based on that, different contributing sources of H2S were identified and analyzed to explain the results including the decomposition of untransformed mercaptans and inefficient stripping of H2S. In conclusion, root causes of each contributing source were identified and effective process and metallurgical solutions were recommended.

This paper presents the analysis and findings of a recent corrosion investigation study of abnormal corrosion rates experienced at the distillation section of a Diesel Hydrotreater Unit, particularly at the stripper column reboiler outlet piping. As a hydrogen-free and low-sulfur environment, Sulfidation corrosion is not usually anticipated to take place with such severity at this section of the process. During the investigation, it was found that similar incidents of high corrosion rates were also reported by industry at different sections of Hydrotreater Distillation which could not be accurately interpolated using either Modified McConomy or Couper-Gorman
curves. As per API-939C, the mechanism of this type of corrosion is still not well understood. As a result, a newly developed based-on-experience curves were utilized to estimate the levels of H2S that have existed at the reboiler outlet piping to result in such high corrosion rates. The estimated H2S levels were then validated through advanced process simulation. Based on that, different contributing sources of H2S were identified and analyzed to explain the results including the decomposition of untransformed mercaptans and inefficient stripping of H2S. In conclusion, root causes of each contributing source were identified and effective process and metallurgical solutions were recommended.

Product tags
Also Purchased
Picture for Recent Failures Of Accelerated High Temperature Sulfidation Corrosion In The Oil Refining Industry
Available for download

Recent Failures Of Accelerated High Temperature Sulfidation Corrosion In The Oil Refining Industry

Product Number: 51321-16738-SG
Author: Hyungjin Lee, Hyeonsu Chae, Junmo Yang, Jaeseung Kim, Taehyung Kim, Taehyun Choi, Sungsu Cho, Moonyoung Lee, Homin Yun Jongun Lee, Hyeongkeun Choi, Gyutae Park, Hyunjoon Park, Seongyong Jang, Sunhyuk Bae, Jaewoong Kim
Publication Date: 2021
$20.00

High temperature sulfidation is one of the oldest damage mechanisms in the refining process such as crude distillation unit, vacuum distillation unit and hydroprocessing unit. Since corrosion proceeds to general corrosion and occurs in a high temperature environment, it is a type of corrosion that can lead to a large fire explosion when a leak occurs.
Picture for Failure Analysis and Investigation Methods of Boiler Tubes Corrosion/Case Study
Available for download

51316-7188-Failure Analysis and Investigation Methods of Boiler Tubes Corrosion/Case Study

Product Number: 51316-7188-SG
ISBN: 7188 2016 CP
Author: hajatolah almasi
Publication Date: 2016
$20.00

The purpose of this study is to investigate the effect of amount of oxygen on corrosion rate of steam loop. Consequently, to eliminate failure, more effective steam quality monitoring concept is recommended.
Picture for Amine Corrosion in Gas Sweetening Plant: Causes and Minimization on Real Case Study
Available for download

51316-7187-Amine Corrosion in Gas Sweetening Plant: Causes and Minimization on Real Case Study

Product Number: 51316-7187-SG
ISBN: 7187 2016 CP
Author: hajatolah almasi
Publication Date: 2016
$20.00

This paper is presented as a practical guide to identifying the causes of corrosion in different sections of gas sweetening trains and ways to control and minimize corrosion in amine plants.
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