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

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 Accelerated Corrosion of a Stabilizer Reboiler HX during commissioning of a Gas Plant
Available for download

51314-4473-Accelerated Corrosion of a Stabilizer Reboiler HX during commissioning of a Gas Plant

Product Number: 51314-4473-SG
ISBN: 4473 2014 CP
Author: Richard Colwell
Publication Date: 2014
$20.00
Picture for Corrosion Related Tube Failures in Amine Reboiler Units
Available for download

51313-02368-Corrosion Related Tube Failures in Amine Reboiler Units

Product Number: 51313-02368-SG
ISBN: 02368 2013 CP
Author: Janardhan Saithala
Publication Date: 2013
$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