Use code FLASH20 at checkout for 20% off all eBooks and eCourses
Under Deposit Corrosion of Fractionator OVHD Exchangers in Crude Distillation Unit and its Remedial Measures
Musaed M . AL-Arada Bader Al-Otaibi Faisal H. Al-Refai Anil Kumar Ray Ali R. AL-AzemiKuwait National Petroleum CompanyMina Abdulla RefineryP.O. Box-69 Safat Kuwait 13001Fax: +965-23280402E-mail: fhr012@knpc.com
ABSTRACT
Fractionator OVHD System of Crude Distillation Unit consists of shell and tube type Exchangers. Carbon Steel metallurgy is used in both shell and tube with Fractionator Tower OVHD vapor on shell side and crude feed on the tube side. Since commissioning frequent failures of these Exchangers have been reported causing loss of production. Failures were in the form of erosion-corrosion pitting & general wall thickness loss on the tube O.D. surface. These failures were as a result of under deposit corrosion due to presence of moderate to heavy fouling and formation of Iron Sulfide scales. Initially there were three exchangers and one more was added afterwards to combat erosion-corrosion problem of tubes. Tubes with different higher metallurgy (5Cr-0.5Mo 9Cr-1Mo) were tried from time to time however no improvement was noticed in the frequency of failure of tubes. Poor supply of wash water to the fractionator OVHD system resulted in accumulation of fouling on the tube O.D. surfaces leading to under deposit corrosion.
Keywords: under deposit corrosion fouling tube O.D. carbon steel pitting general wall loss CDU
The purpose of this paper will be to: (a) review published literature to characterize and classify speciation related to the types of impurities encountered in opportunity crudes; and (b) describe and categorize published case studies of corrosion in crude unit overhead operations.
We are unable to complete this action. Please try again at a later time.
If this error continues to occur, please contact AMPP Customer Support for assistance.
Use this error code for reference:
Please login to use Standards Credits*
* AMPP Members receive Standards Credits in order to redeem eligible Standards and Reports in the Store
You are not a Member.
AMPP Members enjoy many benefits, including Standards Credits which can be used to redeem eligible Standards and Reports in the Store.
You can visit the Membership Page to learn about the benefits of membership.
You have previously purchased this item.
Go to Downloadable Products in your AMPP Store profile to find this item.
You do not have sufficient Standards Credits to claim this item.
Click on 'ADD TO CART' to purchase this item.
Your Standards Credit(s)
1
Remaining Credits
0
Please review your transaction.
Click on 'REDEEM' to use your Standards Credits to claim this item.
You have successfully redeemed:
Go to Downloadable Products in your AMPP Store Profile to find and download this item.