Question about number of tubes in PFR

  • Thread starter AK414141
  • Start date
In chemical reaction Engineering,

I need to know which is better to have many PRF tubes with less volume or to have single PFR tubes with large volume? How to decide what is better ?
 

Nidum

Science Advisor
Gold Member
2,990
844
Usually comes down to the related problems of achieving most suitable reaction temperatures and optimising heat transfer .
 

Nidum

Science Advisor
Gold Member
2,990
844
There is a one more consideration . The flow in large diameter tubes is more likely to have radial and recirculation components . These components can affect the reaction rate and in any case make the plug flow model less valid .
 
G

Gandhar NImkar

If you are considering to use many PFR tubes then i would suggest you to use them in parallel. but it also depends on the rate of reaction, and your desired product composition as in PFR composition is different at different point. Use any system ( Either parallel or single) which gives optimum area, rate of reaction, your desired product composition etc.
 
19,018
3,689
For a given total reactor volume, you need to consider the pressure drop (pumping) and heat transfer requirements, the operating costs, the cost of matetials, and the safety of the system.
 

Want to reply to this thread?

"Question about number of tubes in PFR" You must log in or register to reply here.

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top