×
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

plant design

plant design

plant design

(OP)
A plant is designed to produce hydrogen from Light naphtha. Feed is at 13000kg/hr. If I have to run the plant with a different feed ,say butanes will there be any hydraulic limitation. How should I go about investigating this?

RE: plant design

Simulate the process using both feeds, compare the two results, and find the hydraulic limitations.

Good luck,
Latexman

RE: plant design

If the process uses SMR as the front end, several areas need to be considered.

A. The two feeds have a different steam to carbon ratio and method of vaporization. Calculate the expected yields.
B. The by-product CO2 will be produced at a slightly reduced rate.
C. Depending on CO2 removal proces (PSA, Amine, Catacarb, or?)the loading will change.
D. Product Hydrogen should increase.


 

RE: plant design

rgrokkam:

Your best approach would be to contact the engineering construction company that designed and built your plant. They are the experts whose advice you should first seek.

Milton Beychok
(Visit me at www.air-dispersion.com)
.

RE: plant design

(OP)
Dear agf94510,
CO2 removal is by PSA.
"The by-product CO2 will be produced at a slightly reduced rate." Can you explain why.

In that case, sub-cycle time like adsorption time, equalization time etc for PSA should be adjusted. Isnt it?

Thanks

RE: plant design

The reduced CO2 rate is based on Hydrogen content of an alkane being converted to H2. (CnH2n+2 + H2O to H2 + CO2 + CO) There is excess steam fed into the process to prevent coking.

With a fixed Hydrogen production, Butane is more efficient in producing H2 than Naphtha. (Butane is C4H10 and Naphtha is closer to C7H16.)

Please do not forget that vaporizing Butane may require different equipment or at least change in operating conditions.

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