Patent ID: 6605208
Filing Date: 2003-08-12
Classification: C10C,C10G

Abstract:
A process for separating a feed crude into fractional products comprising the steps of:feeding the feed crude into a pre-flash vessel to produce therefrom an overhead light ends product and a liquid flashed crude feed; introducing the flashed crude feed to a heater to produce a partially vaporized crude feed; feeding the partially vaporized crude feed into a feed zone of a vacuum tower to produce from the vacuum tower an overhead vapor stream, a middle distillate oil fraction, a wax oil fraction, and a bottoms asphalt product; the feed zone being located below a wax oil collection tray that collect essentially all liquids on the wax oil collection tray into the wax oil fraction; heating a portion of the wax oil fraction; and feeding the portion of the heated wax oil fraction into the feed zone.