Patent ID: 9546324
Date: 2017-01-17
CPC Classifications: C10G

Claim:
1. A method for increasing gas oil yield and energy efficiency in crude oil distillation, the method comprising the steps of: a. separating a lighter fraction vapor and a liquid fraction from a desalted crude oil by passing the desalted crude oil through one or more flash drums; b. superheating the lighter fraction vapor by passing the lighter fraction vapor through a first furnace to obtain a superheated lighter fraction; c. injecting the superheated lighter fraction vapor into a distillation column having a plurality of trays, the superheated lighter fraction vapor injected either at a bottom of the distillation column or at a stripping section located between a flash zone and the bottom of the distillation column; d. heating the liquid fraction in a second furnace to obtain a heated liquid fraction and feeding the heated liquid fraction to the flash zone of the distillation column; and e. distilling the superheated lighter fraction and the liquid fraction and passing the distillates to side strippers from different trays of the plurality of trays of the distillation column, to obtain lighter products and residue.