METHOD AND PLANT FOR DISTILLING PETROLEUM AND PETROLEUM DERIVATIVES Russian patent published in 1997 - IPC

FIELD: petroleum processing. SUBSTANCE: invention relates to processing of petroleum and petroleum derivatives on plants: single- flash pipe heater, atmospheric and vacuum pipe heater, and thermal cracking which contain systems creating vapor upflows in distillation sections of rectification and stripping columns. As upflow creating agent, reflux vapors from upper plates of rectification columns and gasoline vapors are utilized. Gasoline from pump discharge is fed through pressure control valve into heat exchangers installed on helmet pipelines of atmospheric columns before condenser-coolers wherein gasoline is heated with heat provided by column top distillate. Further, gasoline is heated in heat exchangers using heat of pumped out petroleum derivatives and enters furnace superheater and then, through intake regulators, distillation sections of rectification and stripping columns. Reflux from upper plates enters, through pressure regulator, heat exchangers where it is heated with heat of pumped out products and heat of intermediate circulatory refluxes in rectification column. Reflux from heat exchangers enters separator. Non-evaporated reflux from separator enters rectification or stripping column, whereas reflux vapors from separator enter furnace superheater and then, through intake regulators, bottoms of rectification and stripping columns. EFFECT: reduced injurious releases, increased productivity, improved quality of product, and reduced power consumption. 2 cl, 3 dwg