Q & A > Question Details
Can you please advise some literature sources or design guidelines for Naphtha Stabiliser design.
16/10/2014 A: Ralph Ragsdale, Ragsdale Refining Courses, ralph.ragsdale@att.net
The purpose of the column is to reduce the vapor pressure such that the naphtha can be stored in an API tank in lieu of a bullet or sphere. Using the target maximum vapor pressure allowed in the region, specify the quantity of butane and lighter to remain in the product. Allowing some pentanes and heavier to go to the gas plant is O.K. as they will be recovered there. That means that it is difficult to justify an intense fractionation in this column. Thus, the reflux ratio in the column need not be high. With that goal, use the simulation to produce the heat and material balance data.
Some refineries do not have this column. The unstabilized naphtha is routed directly to the naphtha splitter (without tankage) which separates the Isomerization unit feed from the Catalytic Reformer feed. The specifications for that column depend on whether benzene is to be destroyed or recovered for sale.