DISTILLATION OF OILS AND OIL PRODUCTS Russian patent published in 1994 - IPC

FIELD: oils and oil products distillation. SUBSTANCE: in gasoline stabilization columns of cracking plants the agent is used exerting the up flows in sublimation zones of rectifying and stripping columns. According to the invention vapors and gases having been removed from the top of gasoline stabilization columns may be used as such an agent. A reflux ( overhead fraction of gasoline ) having been obtained from the intake or discharge area of a spraying pump of gasoline stabilizing columns may also be used as such an agent. Vapors and gases or overhead fraction of gasoline are transmitted to the heat exchanger and heated there with the heat of flows having been removed from the top of the column. The heated vapors and gases ( or overhead fraction of gasoline ) are further carried to steam superheaters of the furnaces and then conveyed to the columns bottom. EFFECT: improved quality of gasoline. 1 dwg