×
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

EG/Water mix (75% Ethylene glycol and 25% Water)
2

EG/Water mix (75% Ethylene glycol and 25% Water)

EG/Water mix (75% Ethylene glycol and 25% Water)

(OP)
Thanks very much in advance for your assistance. Need to find a pump for application below.

Suction pressure= -2 psig (see note below).
Suction Temp= 175°F
Discharge Pressure= 1200 psig
Flow= 15 gpm
Fluid= EG/Water mix (75% Ethylene glycol and 25% Water).
Viscosity= 1.5 cP

Note: Pump takes Eg/Water mix from the glycol reboiler (atmospheric pressure) through a 50 microns filter upstream of pump.

I'm now using a gear pump but performance drops after 1 month so we are continuously replacing pumps.
 

RE: EG/Water mix (75% Ethylene glycol and 25% Water)

A slow running triplex plunger pump is a good choice and not very expensive. I have seen a few in operation for Ethylene injection on gas fields. As Ethylene glycol is toxic you might also consider a triplex membrane/diaphragm pump as it is hermetically sealed. But that is the more expensive option.

RE: EG/Water mix (75% Ethylene glycol and 25% Water)

(OP)
Thanks. I'm trying to stay away from plunger pumps due to packing and leaks. I'll take a look into the triplex membrane/diaphragm pump as I have never used before.

RE: EG/Water mix (75% Ethylene glycol and 25% Water)

We've used some multi-stage centrifugal glycol pumps in similar applications, and they have been less troublesome than most of the triplex pumps.  

I can't remember for the life of me what name brand they were.

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!


Resources