4 replies to this topic

[process16]

hello

we did a simulation by HYsis  to know the flow rate of hot oil that we should process  to ansure the out let of crude oil temperature
the heat exchanger  (reboiller)type is shell and tube  AET 1-2
after the simultaion we got that just 83% of shell side are full of hot oil

we got this comment on HYsis

 

(the fraction of the surface area for cooling the liquide phase is estimated to be 83/100 th e  number of naturelly submerged tubes is estimaed to be 1275 thus only 100/100 of the  surface is concidered submerged by the liquide phase )
please i want to know whats the impact in  this  case (83% of shell side are full of hot oil ) and  what limit   or percentage we can process with

process parameters are:
hot oil (shell side) T1= 600°F     T2= 372°F
crude oil ( tube side ) t1= 340°F    t2 460°F
thank you

Edited by process16, 29 March 2017 - 03:50 AM.

[Pilesar]

Be aware that your stated tube side inlet temperature of 3430°F seems likely to cause a multitude of problems that might not be flagged by your Hysys simulation.

[srfish]

I am not familiar with HYsis. but I do know that a AET with 2 tube passes is not normally a reboiler. Also it could not achieve that much of a temperature cross.

[process16]

Be aware that your stated tube side inlet temperature of 3430°F seems likely to cause a multitude of problems that might not be flagged by your Hysys simulation.

sorry its 340 °F  not 3430

[process16]

I am not familiar with HYsis. but I do know that a AET with 2 tube passes is not normally a reboiler. Also it could not achieve that much of a temperature cross.

ok, without considering it as a broiler, what's the impact in the case of that shell is not full of liquid??!