Patent ID: 8852425

Claim:
A method for producing low sulfur distillate products, comprising: hydrotreating a feedstock under first effective hydrotreating conditions to produce a hydrotreated feedstock that comprises a diesel product fraction having a sulfur content of about 15 wppm to about 50 wppm; fractionating the hydrotreated feedstock in a first volume of a divided wall column fractionator to produce at least a first diesel product fraction, a first bottoms fraction, and a first common fraction that is passed to an upper undivided volume of the fractionator; hydroprocessing a portion of the first bottoms fraction under effective hydroprocessing conditions; and fractionating the hydroprocessed first bottoms fraction in a second volume of the divided wall column fractionator to produce at least a second diesel product fraction with at least one improved property relative to the first diesel product fraction, a third product fraction with at least one improved property relative to the first bottoms fraction, and a second common fraction that is passed to the upper undivided volume of the fractionator, in which the second diesel fraction and the third fraction are not recycled to the hydroprocessing.