SU946584A1 - Centrifugml extractor - Google Patents

Description

(54) CENTRIFUGAL EXTRACTOR

The invention relates to devices for carrying out a liquid-liquid-k system extraction process that can be used in various industries.

Known centrifugal extractor, comprising a housing with a rotor located in it with a nozzle, the contact area of which is made in the form of a slit, input and output devices

phases 1.

The disadvantage of the known apparatus is the low efficiency of mass transfer, since the holding capacity (CS) of the apparatus in the dispersed phase decreases along the radius of the apparatus,

due to the increase in the cross section of the radially diverging channel formed by two adjacent corrugated discs.

The purpose of the invention is to intensify the process by increasing the degree of mass transfer and increasing productivity.

The goal is achieved by the fact that in a centrifugal extractor that engages the body with a rotor with a nozzle located in it, the contact

the zone of which is made in the form of a slit, an input and output device of the Phases, the profile of the slit is made with a variable height, which is selected from the relation.

hi kl

where h is the height of the gap of the contact zone; R is the radius of the apparatus;

10 i - index indicating the location of the zone of contact in relation to the rotor axis.

Figure 1 shows the extractor, 5 a longitudinal section; figure 2 is a section aa in figure 1, a variant with curvilinear plates; in fig. 3 the same, option with rectilinear radial plates.

20

The centrifugal extractor consists of a casing (conventionally not shown), a rotor 1, an upper profiled disk 2 with chambers 3 and 4 for collecting contact phases, respectively, light and heavy. Unmovable fixed pressure discs 5 and b were introduced into the chambers to remove liquids.

Claims (1)

Fixed nozzles / -10 are located coaxially on the top of the rotor axis 30, Nozzles 7 and 8 closely through the sealing washer 11 come to the lower rotor disk 12 with radial channels 1 3 made in it. The light phase is supplied to the contact zone of the apparatus through the distributor 14. The heavy phase is supplied from the dispersing device 15. The heavy phase is separated in the separation zone 16, made in the form of a disk 17 with cut-out channels 1 The light phase is separated in separation zone 19. The working space of the rotor is filled with a nozzle, made in the form of profiled disks 2 and 20, installed with a gap. The profiled surfaces of the discs face each other, forming a profiled slot 21, the height of which varies radially according to a specified ratio. The device works as follows. The heavy (dispersed) phase in the annular space of the pipes 7 and 8 enters the dispersing device 15, where, under the action of the twisting force, is ejected in the form of droplets into the contact zone of the apparatus, made in the form of a shaped slot 21.,. Then, droplets under the action of centrifugal force move along the slit from the center to the periphery of the rotor 1. Having reached the main surface of the phase separation level located near the light phase supply to the contact zone of the apparatus, the dispersed phase drops coalesce and then as a continuous flow enter the zone 16 separation. Above the periphery of the rotor, the phase enters the chamber 4, and with the porsadium on the bent disk, through pipe 10, comes out of the apparatus. The light phase through the fixed pipe 8 and the radial channels 13 through the distributor 14 enters the contact zone of the apparatus near the main level of the phase separation and moves along the profiled slot 21 in countercurrent to the dispersed phase from the periphery to the center. Further, after passing the separation zone 19 for the light phase, it enters the chamber 3, from where it is led out of the apparatus through the pipe 9. When the contacting phases move along a profiled slit, the height of which varies along the radius according to the indicated ratio, favorable conditions are created for intensifying the process by increasing the degree of exchange and increasing productivity. Claims of the invention: A centrifugal extractor comprising a body with a rotor with a nozzle located in it, the contact area of which is made in the form of a slit, a device for inputting and outputting phases, so that, in order to intensify the process by increasing the mass transfer rate and increasing productivity, the slit profile is made with variable height, which is chosen from the ratio hi R where h is the height of the contact zone slit R is the radius of the apparatus; i is an index indicating the location of the considered contact zone relative to the rotor axis. Sources of information taken into account in the examination 1. Patent IT 3133880, cl. 233-15, 1959 (prototype).