HYSYS Topping unit distillation crude 2

[paulinaote]

Hello everyone:
I simulate topping unit where in current operating conditions. After reconstituting the oil improve the simulate data. But I do not matches the pour point of diesel.
The pour point (API 1974) is -8 ° C and should be 0 ° C.
Urgent need that this simulation is as real as possible because I have design a simple vacuum flasher to recover the diesel that is lost as reduced crude.
Attached is my simulation.
Hopefully someone can help me, my mind is somewhat blocked.
The product specifications are as follows:

Naphta:
API:65,2

Kerosene:
API: 46,8
Flash Point °C: 42
Freeze Point °C: -50,2

Diesel:
API: 38,2
Flash Point °C: 79.

 

[poli60]

I'm happy for you... in >30 years of work I never had this lucky opportunity ;-)

 

[paulinaote]

Hello Everyone:
According to their work experiences, what are the requirements of REDUCED CRUDE to be treated in a SIMPLE VACCUM FLASHER?? (heavy metals,sulfur,etc etc etc...any requirement that you know.
Thank you very much for your attention

 

[cloa]

By the way you really should put that question in a new thread.

Here is Aspen/ Hysys for future related questions- put such a thread either in this or that forum.

http://www.eng-tips.com/threadminder.cfm?pid=137

http://www.eng-tips.com/threadminder.cfm?pid=1529

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