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


Selective Catalytic Reduction

Selective Catalytic Reduction

Selective Catalytic Reduction

Has anyone worked with selective catalytic reduction equipment for reducing exhaust NOx?

I'm looking at an application that will be using low speed propulsion engines and possibly high-speed diesel generating sets with a urea system and SCRs.  Fuel will be low-sulphur (1% or less) so ammonia sulphate clogging will be (hopefully) low.  Urea injection will be far enough upstream of the SCR to allow proper mixing.

I'm wondering about some of the operational issues.  Do you have to clean the catalyst elements or just replace them?  Supposedly the urea just turns into water and gasses - is this true in practice or is there sludge to remove?  Any corrosion issues downstream of the urea injection?  Any issues with pumping it onboard into the tanks?


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!


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