SU617039A1 - Extraction column - Google Patents

Description

A-A in FIG. one; in fig. 3 is a section along BB in FIG. one; in fig. 4 is a section along BB in FIG. 2; in fig. 5 is a sectional view of GGD in FIG. 3

The extraction column consists of a vertical cylindrical body 1 with elliptical bottoms, flat bottoms 2, perforated plates 3 with circulation nozzles 4, measuring tubes 5 for the processed product, distribution devices 6, non-flowing pipes 7 for extractant with valves, mesh screening chambers 8, fitting 9 for entering the processed product, the nozzle 10 for the withdrawal of the purified product, the nozzle 11 for the supply of the extractant, the nozzle 12 for the withdrawal of the spent extractor, the nozzles 13 for the indicators of the phase separation in the upper and the nilsay sections x.

The extraction column operates as follows.

All sections of the column through fitting 11 and transfer pipes 7 with valves open from them are filled with an extractant (alkaline solution) to the level of the top fittings of the non-flow pipes 7, and the filling pipes are closed when filled.

The oil product being processed, supplied through the nozzle 9 and the distribution device 6 to the lower section, is dispersed through the openings of the sieve plates 3, entering into mass exchange with the extractant. From the section through coaxial non-flow pipes 5, the processed oil product enters the upstream sections, where the same process of multiple mass exchange is repeated. Purified petroleum product through the nozzle 10 is removed from the column. The spent extractant of the lower section is drained through fitting 12 non-periodically (or continuously), and replenishment with fresh extractant is produced from the above-divided sections through flow pipes 7 by adding fresh extractant through fitting 11, similar to the initial filling of the column with extraheite without stopping the operation of the column.

The arrangement of the overflow pipes for the processed product 5 along the axis of the column and their execution in the form of two coaxial cylinders on which plates 3 are installed, made of flared up sheets and with openings located at the vertices of equilateral triangles, as well as the placement of overflow pipes 5 7 dl extractant outside the column increases the effective cross-sectional area of the column and thereby increases its performance. Positioning the valves on the overflow pipes for the extractant, supplying the overflow pipes

10 of the pipe for the non-net of the extractant into the section with a vertical pipe (a hydraulic valve against the passage of oil product through it) provides the required quality of cleaning of the processed product.

Claims (2)

1. Extraction column, mainly for alkaline cleaning of light oil products from sulfur compounds, including a cylindrical multi-section body, perforated plates, overflow pipes for the processed product and extractant from section to section, distribution devices, fittings for input and output phases, characterized in that , in order to increase the productivity of the column and desalination of the required quality of purification of the processed product, the conversion pipes for the processed product are arranged coaxially the axes of the column, the plates are mounted on the flow pipes, and the flow pipes for the extractant are placed outside the column and are fitted with valves, and the non-drain pipe for the flow of the extractant to the section is provided with a knee-shaped fitting located along the axis of the column inside the pipe for entering the processed product into 0 section. 2. The extraction column according to claim 1, characterized in that the plates are made not of the canvases, are arranged radially and with flared upwards, and The 5 holes of the plates are located along the tops of the equilateral triangles. Sources of information taken into account during the examination 1. Copyright certificate for application No. 1471475/26, 06/26/73, cl. In About the ID for which the extradition decision was made. /--four 1rig.2 6ff (puz.3 r-r -JL-nnn 1-1 II iflus.S No.