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

51314-3936-Corrosion in a Hydrocracking Unit

Picture for Corrosion in a Hydrocracking Unit
Available for download
Product Number: 51314-3936-SG
ISBN: 3936 2014 CP
Author: Vinod Ramaseshan
Publication Date: 2014
$0.00
$0.00
$0.00
A Saudi Aramco Refinery operates a Two-Stage Hydrocracking Unit with a “Debutanizer First” Fractionation Scheme. The plant configuration is such that the performance of the debutanizer column has an impact both in terms of light ends recovery and more critically the H2S related corrosion issues both in the low pressure and high pressure loop within the unit. This paper analyses the process performance degradation of the Debutanizer Column by trying to understand and identify the primary causes of the problem analyzing the same and coming up with a possible solution. An integrity assessment was carried out to down stream equipment of the debutanizer heater reboiler fractionator and transfer lines to study the effect of unexpected H2S slippage. Severe high temperature H2S corrosion (sulfidation) and wet H2S cracking was observed. Corrosion loops and Risk Based Inspection (RBI) were used in this assessment to determine the future inspection and operational strategy. This paper also deals with how simulations and predictive analytic tools have been successfully used in providing short-term mitigation control; the flagging of the leading indicators a development of a dashboard for the operating staff and the recommendation for the revision to the multivariable control system (MVC) and long-term engineering solutions; ability to change the stripping efficiency without change in the yield pattern and the reduction in the overall H2S content in the loop thus reducing both the corrosion and fouling rates.(Saudi Aramco PRD tracking number 13-2498) 
A Saudi Aramco Refinery operates a Two-Stage Hydrocracking Unit with a “Debutanizer First” Fractionation Scheme. The plant configuration is such that the performance of the debutanizer column has an impact both in terms of light ends recovery and more critically the H2S related corrosion issues both in the low pressure and high pressure loop within the unit. This paper analyses the process performance degradation of the Debutanizer Column by trying to understand and identify the primary causes of the problem analyzing the same and coming up with a possible solution. An integrity assessment was carried out to down stream equipment of the debutanizer heater reboiler fractionator and transfer lines to study the effect of unexpected H2S slippage. Severe high temperature H2S corrosion (sulfidation) and wet H2S cracking was observed. Corrosion loops and Risk Based Inspection (RBI) were used in this assessment to determine the future inspection and operational strategy. This paper also deals with how simulations and predictive analytic tools have been successfully used in providing short-term mitigation control; the flagging of the leading indicators a development of a dashboard for the operating staff and the recommendation for the revision to the multivariable control system (MVC) and long-term engineering solutions; ability to change the stripping efficiency without change in the yield pattern and the reduction in the overall H2S content in the loop thus reducing both the corrosion and fouling rates.(Saudi Aramco PRD tracking number 13-2498) 
Product tags
Also Purchased
Picture for Corrosion Control of a Hydrocracking Unit Debutanizer Overhead System
Available for download

51316-7273-Corrosion Control of a Hydrocracking Unit Debutanizer Overhead System

Product Number: 51316-7273-SG
ISBN: 7273 2016 CP
Author: OMAR ALABDULGADER
Publication Date: 2016
$20.00

A Corrosion Control Plan was developed for a Debutanizer Overhead System, which had suffered from high corrosion rates and multiple leaks. This paper will outline the efforts undertaken and conclude with the Corrosion Control Plan, developed to enhance reliability and availability of the unit and mitigate corrosion damage.

Picture for 09358 Corrosion Mitigation and Monitoring in Sulfur Recovery Unit
Available for download

09358 Corrosion Mitigation and Monitoring in Sulfur Recovery Unit

Product Number: 51300-09358-SG
ISBN: 09358 2009 CP
Author: Salah I. Al-Luqman, Majed M. Al-Qarni and Iyad Buraiki
Publication Date: 2009
$20.00

This paper will demonstrate the fundamental corrosion issues encountered in Sulfur Recovery Units. It will address the Claus process chronic corrosion problems such as sulfidation, sour environment cracking, weak acid corrosion, etc.
Picture for 96615 CRUDE UNIT CORROSION AND CORROSION
Available for download

96615 CRUDE UNIT CORROSION AND CORROSION CONTROL

Product Number: 51300-96615-SG
ISBN: 96615 1996 CP
Author: Ara Bagdasarian, Jim Feather, Bob Hull, Ray Stephenson, Russell Strong
$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