METHOD OF THE CRUDE OIL STRAIGHT-RUN DISTILLATION BY THE SMALL-SIZE DISTILLATION PLANT Russian patent published in 2006 - IPC B01D3/14 C10G7/00 C10G7/06 

FIELD: petroleum-processing industry; methods of a straight-run distillation of crude oil by the small-size distillation plants.

SUBSTANCE: the invention is pertaining to the field of a petroleum industry, in particular, to production of gasoline and motor oils with a low solidifying points by a straight-run distillation of crude oil in the territorially remote districts. The method includes a crude oil distillation by the small-size distillation plant equipped with a furnace for crude oil heating, a complex atmospheric column (1) designed for production of a gasoline, a diesel fuel of the "summer" or "winter" grades, a wide spread of hydrocarbons and black oil. The heated in the furnace for crude oil heating crude oil is divided into three flows: the first of which is fed into the area of feeding of the main column (1), which is connected with two stripping columns (2) and (3), and the other two heated crude oil flows are used for delivery of heat by means of an indirect thermoexchange into the lower parts of the stripping columns (2) and (3). After the heat recuperation each of crude oil flows from the lower parts of the stripping columns (2) and (3) are directed for separation into the complex atmospheric column (1). From the upper part of the complex atmospheric column (1) they extract the gasoline fraction distillate, which after condensation is bleeding out in the form of commercial gasoline. From the reinforcing part of the column (1) from a row of the located in height one over another plates extract two side-cut distillates, which are delivered to the stripping columns (2) and (3). The stripping columns are equipped with the valve plates. It is preferable, that the side-cut distillates from plates 4, 6 and 8 of the main column - the complex atmospheric column (1) are directed to the stripping column (2), and the side-cut distillates from plates 5, 7 and 9 of the main column (1) are directed to the stripping-column 3. As a result from the lower part of the columns (2) and (3) they collect baseline fractions of the diesel fuel, which are cooled and withdrawn to a commercial oil products tank farm. From the lower part of the main column (1) collect a distillation residue - the black oil, which is partially used as a fuel in the furnace (4) for heating of crude oil. The method ensures the maximum yield of the commercial fractions depending on their potential contents in the crude oil.

EFFECT: the invention ensures the maximum yield of the commercial fractions from the crude oil depending on their potential contents in the crude oil.

3 cl, 1 dwg, 3 tbl