SU632375A1 - Centrifugal extractor - Google Patents

Description

one

The invention relates to devices for carrying out liquid extraction processes, in particular to extractors with multiple mixing and phase separation in a centrifugal field, in particular to multistage centrifugal extractors with countercurrent phase motion.

. A multistage extractor is known, consisting of a rotating body with annular perforated partitions, dividing it into the interdivision of the separation and mixing chamber, and a fixed distributor with agitators and devices for input and output of liquids l.

The closest to the isophoretic by technical essence and the achieved result is a centrifugal extractor containing a housing, divided by annular partitions with openings for the flow of phases to the mixing chambers, fixed to the axis of the housing and output device.

The most significant drawbacks of this extractor are: the lack of directional movement of the light phase along the apparatus and the possibility of returning it to its original position from any level, which leads to a decrease in mass transfer efficiency and delamination performance; the possibility of returning the heavy phase within one stage from the mixing chamber to the settling, which also impairs the separation of the phases.

In order to improve the separation of the phases, the extractor is equipped with conical inserts with annular partitions installed between the partitions in the settling chambers.

The drawing shows a longitudinal section of a General view of the extractor.

The extractor consists of rotating body 1, in which annular partitions 2 and 3 are installed. Partitions 2 have openings 4, channels 5 and annular threshold 6.,

Claims (2)

The partitions 3 have holes 7 and 8. The partitions 2 and 3 form an alternating mixing chambers 9 and settling chambers, which are divided into conical inserts 10 into zones 11 for lightening the light phase and zones 12 for lightening the heavy phase. In the mixing chambers 9, annular partitions 13 are installed, forming a submerged hydrolock 14. In the lower part of the rotating housing 1 there is a final zone of clarification of the heavy phase 15 of the first stage, a granular lock 16 pocket 17 and apertures 18, in the upper part - the final zone of clarification of the light phase 19 of the final steps and a partition 20. Inside the rotating housing 1 there is a fixed distributor 21 phases with channels 22 and 23 and with agitators 24 fixed on it. The centrifugal extractor works as follows. The heavy and light phases enter the housing through the distributor 21 and the opposite flow through all extraction stages in which, in the mixing chambers 9 by the stirrers 24, they mutually intermix to form an emulsion which flows through the air trap 14 into the settling chamber where it is divided into light and heavy phases, which then enter the mixing chambers of the neighboring ec-g of the radiation stages. Claims of the invention: A centrifugal extractor comprising a rotating body divided by annular baffles with openings for the flow of phases to the mixing and settling chambers, a fixed phase distributor mounted along the axis of the housing and a phase output device, different in that it is equipped with installed between the partitions in the settling chambers conical inserts with annular partitions. Sources of information taken into account in the examination: 1. Japan Patent No. 16223, cl. 13 Oh, 1962. 2. The author's certificate of the USSR N3 187729, cl. On 01D11 / 04, 1956.  ////////// 7 / Z, /) | L, H 7 //////////// (