×
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

Separator Inlet Device for Dirty Service

Separator Inlet Device for Dirty Service

Separator Inlet Device for Dirty Service

(OP)
Hi guys. Pretty new to 2Ø separators; looked at some old threads, read pertinent chapters from Campbell/GPSA/Arnold, still got questions.

Need an inlet device for a gas-liquid separator at the outlet of a fin-fan. Vapor mass fraction is about 32%; gas phase rate is 2.5 MMscfd. Service is dirty/fouling, mostly due to a cocktail of iron sulfide, trace heavy HC, tiny solids, and all their associated hangers-on. Mesh-type mist eliminators don't work in this service because they foul up in about three months. So we are going with a vane pack for the outlet mist eliminator.

The inlet device though is still unknown. I can do the rhoV2 calcs but that doesn't help much when it comes to what works in the real world. What say ye? Thanks guys! Pete

RE: Separator Inlet Device for Dirty Service

That's a very easy decision, and an easy problem to solve. Type "Peerless separators" into your Google search bar. Let them design and supply the separator based on your specific process and mechanical requirements. Gas-liquid separation is what they do, and I'd be shocked if they haven't sold at least hundreds of separators for this same service.

BTW, I don't have any personal of financial connection to Peerless, but I do have experience using their separators. If you design the separator yourself, you'll probably spend more money for a bigger separator that doesn't work nearly as well.

RE: Separator Inlet Device for Dirty Service

How about this:
Fabricate a slotted feed pipe distributor for this service made out some corrosion resistant material - SS316 or similar. Select a feed pipe size to enable a rho-v2 of say 6000 max (rho=kg/m3, v=m/sec). Cut say 1inch wide slots to expose the bottom one third of the perimeter. And fit in as many slots to enable the same cross sectional area as that of the feed pipe. Cap off the downstream end of this internal distributor. Enable a straight piping length (of the same dia as this feed pipe) for about 10d upstream of the feed nozzle to cut out any turbulence that may shear the feed stream liquid droplets. Obviously you would ask for continously slope down piping from the fin fan cooler to this sep.

RE: Separator Inlet Device for Dirty Service

(OP)
Guys - Thank you for the helpful replies. Very much appreciated.

George - Thank you very much. Let me work on that and I'll see what I can come up with. Thank you!

RE: Separator Inlet Device for Dirty Service

Getting this unholy mix of crud into your separator is only part of the issue. You will need to think carefully about how to prevent this from settling in the bottom by having sparging nozzles, sand washout nozzles etc.

Lowering inlet velocity of the liquid is key in a controlled manner.

You can always go for one of these babies https://www.sulzer.com/en/shared/products/2017/03/...

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! Already a Member? Login


Resources

White Paper – Choosing the Right Spring Loaded Connector
In today’s cost-sensitive world, designers are often driven to specify the lowest cost solution for every aspect of their designs to ensure that their solution is competitively priced and their company remains profitable. However, specifying a low-cost, low-quality connector solution can result in premature failure, considerable re-work costs and damage to reputations. Download Now
eBook – Own the Lifecycle: Sustainable Business Transformation
Increasingly, product and services companies are seeking more information and control in the operational lifecycle of their products, including service and use. Better information about the operational lifecycle, and the ability to use that information, requires more than just unstructured data flowing back from products in the field. 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