×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• 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.

# Distillation Blending

## Distillation Blending

(OP)
Hi all,

I have been searching in vain for the past few months for a way to predict the final distillation curve of two blend petroleum products.

Is there a computer programme or known equation which could help me predict what the curve will look like from two components?

Any help on this one would be greatly appreciated.

Cheers
Replies continue below

### RE: Distillation Blending

I believe PRO II can predict the distillation curve for two blending petroleum products. Maybe Hysis can do it too.

### RE: Distillation Blending

what about of any equation to calculate the blend of gasoline?

### RE: Distillation Blending

Just for quick estimate you can linearly blend the single component distillates at the same temperatures: for example
- 2 components (A,B);
- blend composition, mass (or volume) fractions: xA, xB (xA+xB=1);
- distillation points, mass (or volume) fractions: D1A, D2A.....DnA and D1B, D2B,....,DnB (at T=T1, T2,...., Tn °C).
Results: DiBLEND = xA*DiA + (1-xA)*DiB (for i=1...n)
This approach were used in old blending/linear programming tools, not yet linked to simulators. Results are not very bad... only when the temperature ranges of the components are not very different.

The alternative (rigorous) approach consists in putting the two (or more) component distillation curves and mix them in a Process Simulator (HYSYS, UNISIM, PROII, WINSIM.....)

#### 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.

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:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!