lateral strippers
lateral strippers
(OP)
can somebody explain to me in the simplest terminologist possible the use of SIDE STRIPPERS on atmospheric distillation of crude oil. can the by product be obtained without the side strippers?
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RE: lateral strippers
Any good text on petroleum distillation ought to cover this stuff.
RE: lateral strippers
Strippers are used to remove entrained light ends from the draw-off streams. The vapors crossing the draw-off tray contain light components that are partly absorbed -and condensed- in the side-streams.
Strippers usually contain four trays to promote contact between the oil and stripping steam flowing counter-currently. The removed lights and the steam re-enter the main column.
To remove say, 6% by volume, 0.4-0.5 lb steam per US gal of product are used.
RE: lateral strippers
In addition what others have said above, YES, you can also draw products without side strippers but their flash points will be lower than that if drawn through strippers. If your refinery Crude column has Kero and Diesel side strippers as well as Circulating refluxes, the circulating reflux streams will have lower falsh points compared to the stripped streams, which you can test and find out. I have seen product streams drawn from circulating refluxes when there are limitations on the stripper draws OR there are no strippers forthose streams. You can also strip with hot(preferably)fuel gas(preferably hydrogen rich) in case your column can handle the excess vapor load. In maximizing a particular product from the crude ( say EURO-III Diesel), a well stripped Diesel side cut from the column can lead to higher overall production of blended diesel product than the other way.