SU731987A1 - Centrifugal extractor - Google Patents

Description

(54) CENTRIFUGAL EXTRACTOR

one

The invention relates to the construction of centrifugal extractors and can be used in solvent extraction processes.

Multisectional centrifugal extractors are known, containing a rotor, intersectional and in-line partitions, dividing the rotor into zones, a fixed distributor with a receiving-output device and mixing elements I and 2.

There are no structural elements in these extractors that allow their assembly and disassembly remotely.

Also known is a centrifugal extractor comprising a cylindrical case with overflow channels, a rotor located along the axis of the case, annular partitions dividing the rotor into mixing, separation and selection chambers D) az, phase distributor with pipes for input and output of phases, agitator 3,

The phase distributor is located concentrically with respect to the rotor axis, the agitators are fixed directly on the distributor, and seals are mounted on the partitions between adjacent sections. The known extractor is also impossible to mount and dismantle remotely. In addition, it is possible overflow of the emulsion and mixing of the separated phases, which reduces its performance.

In order to improve the service of the extractor and intensify the process by stabilizing the hydrodynamic regime, the extractor is equipped with a bracket mounted on the distributor with the possibility of translational motion, on which the agitators are fixed, and box-shaped

ts traps, hidden on agitators and nozzles, and the distributor is placed eccentrically in relation to the rotor in the housing. The centrifugal extractor is equipped with additional

20 annular partitions with openings located at the ends of the chambers.

The drawing shows the proposed extractor.

25

The centrifugal extractor comprises a rotor 1 located in the housing 2, a chamber 3 for picking a heavy phase is attached to the top, and a camera for picking up a light phase from below. In box 30, chambers 2 are formed by chambers 5, which are contained in annular partitions 6 and 7, slit nary annular partitions 8 with the same hole diameter 9, dividing rotor 1 into mixing chambers 10, chambers 11 are divided into flow channels 12. For supplying initial solutions and the output of the separated liquids, the extractor is equipped with a distributor 13 having inlet nozzles 14 and pressure nozzles 15, on which box-shaped traps 16 are mounted. In the bearings 17 there is a bracket 18 fixed to the distributor 13 from rotation with the possibility of translational motion Yeni. On the bracket 18 mounted agitators 19, with box-shaped traps 16.

The extractor works as follows.

The initial solutions are fed to the rotor 1 pre-filled with working solutions through distributor nozzles 14, 13, the yellow phase enters through the overflow channel 12 into the lower stage mixing chamber 10, and the light phase, respectively, into the chamber

10mixing top stage. In the mixing chambers, the solutions rotate with the rotor 1 and, meeting the resistance of the immobile agitators 19, sweep over and form an emulsion. The emulsion, overflowing through the annular partition 7, enters the separation chamber 1 of the same step. The heavy phase is collected at the periphery of the separation chamber 11, and the light phase is closer to the vrashen axis. Then the heavy phase rises up through the overflow channels 12 and, overflowing through the annular partition 6, enters

into the mixing chamber 10 of the next step. The light phase from the separation chamber 11 of the upper stage is poured through the double partition 8 and enters the lower stage.

Thus, in the apparatus, the counterflow dries out and as a result the heavy phase from the last stage after separation enters the selection chamber 3 and through the branch pipe 15 is removed from the apparatus. The light phase from the lower stage separation chamber 11 enters the extraction chamber 4 and is discharged through the nozzle 15 from the apparatus. The establishment of additional annular partitions 8 forming a double partition, having a radius of opening 9, smaller than the passage hole in the annular partition 6, prevents the heavy phase from moving upwards from step to step into the mixing chamber of the underlying step or directly into the separation chamber of the upstream step ,

Supplying pressure nozzles 15

11 mesh 19 box-shaped traps and, eliminates the ingress of separated

phases or emulsions in other stages. Drops of liquid fall into traps and, accumulating, roll down into their own degree.

The eccentrically located distributor 13 allows remote mounting and dismounting of the rotor 1,

For this, the rotor 1 is mixed in the direction of eccentricity, the pressure vessels 5 and the connecting pipes 4 of the distributor 13 exit from the annular spaces, after which the rotor 1 with the bracket 18 fixed in the bearings 17, on which the agitators 19 are fixed, is lifted up. With

5 of this, the bracket 18 disengages from the distributor 13,

The proposed design of a multistage centrifugal extractor allows for remote

0 assembly and disassembly of the rotor, stabilize the hydrodynamic and technological indices of the operation of the apparatus, eliminate seals in the apparatus, facilitate maintenance and reduce

r the operation time of the apparatus in the cascade,

reduce the occupied production space.

Claims (1)

Invention Formula 1, a centrifugal extractor containing a cylindrical body with overflow channels, a rotor located along the axis of the body, annular 5 partitions dividing the rotor into mixing chambers, delamination and phase selection, a phase distributor with sockets for the input and output of phases, a stirrer, characterized in that 0 in order to improve the service of the extractor and intensify the process by stabilizing the hydrodynamic mode, it is equipped with a bracket mounted on the distributor with the possibility of translational movement, on which the agitators are fixed, and box-shaped traps fixed on the agitators and nozzles, and the distributor is placed eccentrically in the housing relative to the rotor ,  2, a pop extractor, 1, characterized in that it is provided with additional annular partitions with openings located at the ends of the chambers, five . Information sources, taken into account in the examination . USSR author's certificate 229455, cl. B 01 D 1 1/04, 2, USSR Author's Certificate Q 317394, cl, B 01 D U / 04. 3, Malts A, I, and Seliverstvo K, B State and prospect of using centrifugal extractors in nonferrous metallurgy, M, Himi, 1974 , s, 158 (prototype).