Hi all,
I am hoping for some advice in regard to modelling a VDU new slopwax draw.
Currently I have 2 side draws, LVGO and HVGO. The overflash is 5% on feed or 10 t/h and it also contains entrained residue.
I want to draw a new side stream (slop wax) and need to simulate the entrainment in order to get the physical properties of the slop wax correct, whereby slopwax = overflash + entrainment.
I am going to model the entrainment outside the column and route residue and the overflash draw to a mixer.
I am just wondering what the composition of the overflash directly from the column should be (without the entrainment modelled externally)
Would it be a 50% Vac Residue 50% HVGO mix? Or some other ratio?
In order to model the overflash I was just going to change the Vac Residue and HVGO cutpoints on feed such that the stream consisted of Vac Residue front end and HVGO back end.
Also can anyone advise what a typical overlap between Vac Residue and HVGO should be?
This will give me a good idea of how much HVGO is still left in the Vac Residue (in the original case with no slop wax draw)
I hope you can help.
Many thanks,
CM
Edited by CMEngineer, 10 January 2019 - 05:47 PM.