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


Transportation of HSD through LPG pipeline

Transportation of HSD through LPG pipeline

Transportation of HSD through LPG pipeline

Dear Sir/Mam,

We are exploring feasibility of transportation of HSD through LPG pipelines. While we are looking into various operational as well as infrastructure requirements, one of challenge that is emerging is the handling of LPG-HSD interface at delivery locations.

Can you please suggest some method to handle the LPG-HSD interface at delivery locations.

Mohit Garg

RE: Transportation of HSD through LPG pipeline

Assume HDS means High speed diesel?

TO avoid flashing the LPG into an interface tank and having to deal with some violent two phase flow / large volumes of vapour, you will need to send the interface to a pressurized vessel able to handle LPG at your pumping temperature and keep it liquid.

What you do with the interface after that is up to you, but I would slowly lower pressure and let the LPG flash off and then use the LPG gas for something useful then pump the HSD into the HSD tank.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: Transportation of HSD through LPG pipeline

I've read of companies using pipeline pigs / pig receivers in these operations in order to reduce the volume of contaminated fluid that needs to be handled at the delivery point. There may be information on the net or from your colleagues in other companies which run these multiproduct pipelines on what type of pig to use.

RE: Transportation of HSD through LPG pipeline

In reality pigs pass fluid at a rate of about 1%. Following a series of tests which showed little to no impact on the interface size of using pigs or spheres many multi product pipeline companies don't use any physical separation but minimise IF by keeping flow and pressure constant and swapping over products faster in the inlet manifold.

That plus the coast of the pigging and the added risk from the operation male it non preferred.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

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!


White Paper – Your Construction ERP RFP Checklist
Selecting business software for a medium to enterprise-sized construction concern is extremely challenging in large part because most enterprise resource planning (ERP) suites originated in the world of repetitive manufacturing and are therefore a poor fit for a project and asset-centric business. However, midsize to large contractors need the predictable, auditable processes that ERP delivers. 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