Contact US

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

Water draw-off in Products storage tanks

Water draw-off in Products storage tanks

Water draw-off in Products storage tanks

I am seeking for an advice for applicable and advanced method to draw-off water out of refined products storage tanks (Diesel, Gasoline and Kerosene). The practice we do to draw-off water is to gauge the tank to determine the level of water presence, then open the drain line manually to draw-off almost 80% of measured quantify. This practice is not accurate and subjected to human error in detraining cut-off point between oily water and pure product.

I appreciate if anyone can present more advanced method better than what we are using, thanks.

RE: Water draw-off in Products storage tanks

In the plant I work at, we have a specific tank farm that uses almost the same process that you described. We have a sump in which water will sink into, and a sight glass mounted on the outside of the tank at the pump. We have it measured out on the site glass though so that we can see where the two immiscible liquids meet and how much it is(think graduated cylinder). We can see how much of the h2o we have to pump out using a positive displacement pump. Keep in mind that if you use a high flow rate pump that you will need a vortex breaker, as to not suck in any end product out with your h20 cut.
This is the typical setup at tankfarms that deal with hydrocarbon cuts, excluding the obvious like residuum and really light ends such as certain LPG's and naphthas.  

Will Chevron Corp.

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


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