Aspen Plus - Synthesis of High Density Polyethylene using Ziegler Natta Polymerization Model
Vložit
- čas přidán 23. 10. 2020
- In this screencast, we simulate synthesis of high density polyethylene (HDPE) using Aspen Plus built-in Ziegler Natta polymerization model. The reaction is a high pressure liquid based polymerization reaction in a CSTR. The feed contain ethylene as monomer, TiCl4 as catalyst and hydrogen as chain transfer agent. We analyze molecular weight and degree of polymerization of HDPE after the reaction.
Related link:
1. onlinelibrary.wiley.com/doi/b...
Thanks very much for your video. The low conversion might be caused by the wrong rate constants. The value in your video is the same with that in the Aspen example file but the unit is different. You used 1/hr but the Aspen example file used 1/s.
hello, may i ask if you have the aspen file? it would be really helpful for my final project. Thank you!
Where did you find the necessary kinetics information (in particular the Pre-Exponential values) for the polymerization of ethylene? I am attempting to do a similar process; but I am trying to polymerize propylene into isotactic polypropylene with titanium trichloride as the catalyst and diethylaluminum chloride (DEAC) as my co-catalyst. I have looked through many research papers for the necessary kinetics information but its a little difficult to find and I was wondering if you knew the best place to look.
This one i just take it from textbook...this video is for demo only not really for research. So, getting kinetic info might be easier..but for research might be difficult to find the info for new polymer/catalyst system
perfect
Hi Abdul Hamid, a good video.
So, I have two questions, at the Kamal's book the site graphs are inside the cumulative curve of the chain lenght distribution plot CLD and your CLD 's plot is diferent. I have the same problem.
Why is it...???
Or What should I do to get the Kamal's CLD...???
I thank you in advance for your time.
Actually if you refer Kamal textbook, there are quite a few differences. 1. Kamal's process has 2 CSTR while mine only 1 CSTR..2. In Kamal's textbook, his catalyst active site is 4..meanwhile mine I decided to use only 2..I am kinda lazy to do input kinetic parameter for all 4 catalyst sites...thats why I decided to use 2 catalyst site..Maybe that's the reason why it is different
Thanks a lot@@MohamadReziAbdulHamid to answer me.
I am agreement with you about the Kamal's model is similar a your model. Indeed, the first CSTR of Kamal has the same conditions that your reactor. I comment to you. I simulate the Kamal's model even the Polypropylene reactor modeling but I continue getting the sites graphs outside the cumulative curve. It is a problem and I don't know as solve it. The literature shows us that the sites graphs should be inside the cumulative curve.
Please, could you help me...??? Or Who do you recommend that I can consult...???
Hi, thank you for video. I have one question, at 7:30 I can not click "distribution" :( how can i get next step?
hello, hmmm I am not sure though...maybe u skip some of the step before...check again
Great
عالی
excuse me, how can i separate TiCl4, TEA, Hexane, and H2 if I want to have HDPE as my final product?
Hello, not sure though but i read somewhere people just flow like hot gases on the resin to strip off any residual monomer, etc. For example, people flow hot nitrogen to remove unreacted propylene from polypropylene resin..Hope this helps
Can you please share this book with me?
Aoa, sir thanks for this informative video. Sir it's request to that can you please share this pdf document.