×
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

Need a pump for Tar

Need a pump for Tar

Need a pump for Tar

(OP)
I am soon to quote a job involving the disposal of waste tar by pumping it through compressed air atomised nozzles into a furnace which is also fired by nat gas maintaining around 1250 degC.in the furnace.

Previously "Mono" pumps with Viton rubber stators have been used. Supposedly the stator only lasts 3-4 weeks before replacement.

The only properties I have so far for the tar are:
Softening point.......................47 degC
Flash Pt.................................196 degC
SG @ 15.5deg C.....................1.32
Melting Pt. range....................70 to 80 degC
Visc in the storage tank...........50000 to 1000cp.**
**The temp in the tank is between 80 to 100degC.This visc seems rather high (37000 to 758cSt) especially for atomisation at the burner but I have yet to confirm this and determine the visc temp relationship for this tar.

At this stage I was wondering if anyone has experience with pumping or burning tar, and whether there are any other pumps suitable, especially with a longer working life.

Thanks,
Rod.

Rod Nissen
nissenr@one.net.au
 
 

RE: Need a pump for Tar

(OP)
Thanks svanels.

Rod Nissen
nissenr@one.net.au
 
 

RE: Need a pump for Tar

I agree with svanels.  My company successfully uses many Viking internal gear pumps for viscous hydrocarbon applications.  For sealing, consider a triple lip seal such as a Fluidtech PS-II or a comparable seal from another seal manufacturer.  We have not had good luck with conventional mechanical seals in these pumps.

RE: Need a pump for Tar

Temperature, abrasion and pressure may be playing a part in the premature failure of the existing progressing cavity type pumps.  Abrasives such as sand, sludge or metal fines in the tar combined with a high discharge pressure would have a dramatic effect on pump life, if it was not selected properly for these factors initially.  Some progressing cavity pump manufacturers, including Moyno, also offer pumps with solid metal stators that might provide substantially better performance in this application.  We have successfully applied Moyno pumps in waste oil burner applications with metal fines.  

RE: Need a pump for Tar

To Ipsco, I agree with you that progressive cavity pumps can pump extreme materials like cement, but there are different manufacturers.  You have Robin Myers which uses the brand MOYNO and there is an other brand MONO,  I think from Dresser. We had problems with some MONO pumps and we did not receive any response of the manufacturer.
We have about 400 MOYNO well pumps for pumping crude oil.

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

White Paper – Data Security and Know-How Protection
Our data is constantly exposed to the danger of being intercepted or stolen as it wends its way over global data networks. Data security measures and measures for protecting intellectual property should not, however, first be implemented when data is exchanged – companies must lay the foundation for these measures within their own organization. Download Now
White Paper – Collaboration in the PLM Context
The influence exerted by the Internet of Things (IoT) means that there is a steadily growing need for collaboration in industry. Partners from new industries and areas of application need to be integrated in cross-company business processes to ensure that the lifecycle of smart, connected products can be managed from end to end. 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