×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

naphthenic acids in lube plants

naphthenic acids in lube plants

naphthenic acids in lube plants

(OP)
I'm speaking of corrosion by naphthenic acidity in furfural lube extraction plants. Can anybody tell me what procedures, other than upgrading metallurgy in the solvent recovery circuit on the extract side, and trying to reduce the TAN values of the VGOs treated,is recommended ? Russian type crudes have this acidity in ther VGOs sometimes with TAN values higher than 0.6 mg KOH/g.

Are any filming inhibitors or neutralizers been used ?

Thanks for your attention.

RE: naphthenic acids in lube plants

The licensors of this process have full familiarity with this type of corrosion. Furfural extraction is used in the manufacture of high quality naphthenic lubes, and naphthenic acid corrosion conditions can be expected at high enough temperatures. Alloy cladding and solid alloy internals in those sections is imperative

Neutralizing the acid is very difficult without also causing the furfural to decompose.

Shell, Exxon, Bechtel, Edeleanu, IFP all should be able to assist you.  Bechtel Houston Mgr of Lube Technology Bob Earhart,(713 235 5400), may be able to assist you easily  

RE: naphthenic acids in lube plants

(OP)
Keithbowers, thanks a lot. Until now I was convinced that naphthenic acidity appears also, and sometimes more so, with paraffinic mix-base crudes. I'll follow your advice.

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

eBook - Manufacturing the Cars of Tomorrow
In this ebook, we'll explore how additive manufacturing is going to transform the way cars are made. This includes commentary from thought leaders such as Ford's CTO, Ken Washington, Customer case studies of ways 3D printing is being used today, and a variety of part examples where 3D printing is already impacting how automobiles are made. Download Now
White Paper - Smart Manufacturing for Semiconductor
New technologies and approaches present great opportunities for semiconductor manufacturers to achieve high levels of innovation, yield and improvement. This white paper explores some of these cutting-edge technologies and how they can be applied effectively in the semiconductor industry. Read about how Smart Manufacturing is transforming the semiconductor industry. Download Now
White Paper - Analysis and Simulation in Aircraft Structure Certification
Organizations using simulation and analysis tools effectively see the benefits in their ability to achieve certification faster and with drastically less total cost than those who do not maximize these tools. Read this White Paper to learn about how digital tools such as analysis and simulation help in aircraft structure certification. 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