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

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.

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
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$20.00
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This study is a case study about three high temperature sulfidation failures found in equipment containing naphtha and kerosene products in just one year. The first failure is heat exchanger tube leakage due to accelerated corrosion from changes of operating condition and scale deposits in process condition with high reactive sulfur contents. The second and third cases are fired heater tube leaks caused by rising reactive sulfur contents and increasing tube metal temperature by vulnerable flow regime. The simulation data in each case were used to analyze the cause of increased metal temperature and corrosion rate. The review of the three failures suggested the corrosion rate of high temperature sulfidation can be accelerated by increasing temperature only 10°C(50°F) or changing the flow regime in a fired heater if the process stream contains vulnerable sulfur species like sulfide, disulfide, mercaptan in kerosene and naphtha streams especially. Finally, a correlation between corrosion rate and temperature was analyzed by conducting autoclave tests about each light crude and condensate oil samples.
 

This study is a case study about three high temperature sulfidation failures found in equipment containing naphtha and kerosene products in just one year. The first failure is heat exchanger tube leakage due to accelerated corrosion from changes of operating condition and scale deposits in process condition with high reactive sulfur contents. The second and third cases are fired heater tube leaks caused by rising reactive sulfur contents and increasing tube metal temperature by vulnerable flow regime. The simulation data in each case were used to analyze the cause of increased metal temperature and corrosion rate. The review of the three failures suggested the corrosion rate of high temperature sulfidation can be accelerated by increasing temperature only 10°C(50°F) or changing the flow regime in a fired heater if the process stream contains vulnerable sulfur species like sulfide, disulfide, mercaptan in kerosene and naphtha streams especially. Finally, a correlation between corrosion rate and temperature was analyzed by conducting autoclave tests about each light crude and condensate oil samples.
 

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

Product Number: 51321-16763-SG
Author: Omar S. Alabdulgader
Publication Date: 2021
$20.00