×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

*
*
*
*

Thanks. We have received your request and will respond promptly.

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Fired Heater tube corrosion

thread483-5368

Fired Heater tube corrosion

Fired Heater tube corrosion

(OP)

A Fired Heater with a hydrocarbon process gas containing 1 mol% H2S and tubes of ASTM 106 Gr B suffered rapid internal corrosion at the tube outlets ie 4mm in 1.5 years. Process gas outlet conditions are 295 degC at 65 barg and the gas is dry. The scale is a mixture of iron oxides and sulfides.

Is this an expected result with this material selection and conditions, or is there another factor at work?

RE: Fired Heater tube corrosion

The H2S is also breaking down into H+ ions and there is hydrogen impingment too.

RE: Fired Heater tube corrosion

You must assess the type of corrosion. I mean if is external, internal or both. If it is only internal, reason maybe some contaminants from the stream as our partner said. If there is some external, you should take into account the tube metal temperature. For killed carbon steel tube as A106, the oxidation due to fire cause tube thining when it is over 500-530 C.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login

Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now
Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close