Patent ID: 7404889
Filing Date: 2008-07-29
Classification: C10G

Abstract:
1. In a method for thermally cracking a hydrocarbonaceous feed in at least one stand alone cracking furnace wherein said feed is first subjected to a vaporization step in a stand alone vaporization unit in which unit a substantial portion of said feed is vaporized and the vapors thus formed are removed from said vaporization unit and passed to said at least one cracking furnace as the feed for said furnace, the improvement comprising subjecting at least one of whole crude oil and condensate to at least one atmospheric thermal distillation step in a stand alone atmospheric distillation tower to form at least a light gasoline overhead fraction and a separate residuum fraction containing gas oil, and passing at least part of said thus formed light gasoline and residuum fractions in combination as feed to said vaporization step.