SU912198A1 - Rotor-disk extractor - Google Patents

Description

(5) ROTOR DISK EXTRACTOR

I

The invention relates to chemical engineering, in particular to rotary disc mass transfer apparatus, which are used in the chemical, petrochemical, hydrometallurgical, pharmaceutical and other industries.

A rotary-disk extractor is known, comprising a vertical cylindrical body with stator rings, a rotor with dispersing disks, and separating devices located in the upper and lower parts of the body P.

However, when separating light and heavy phases with a small difference in density, the system tends to form stable, hardly separable emulsions, separation of phases in the separation devices of the upper and lower zones of the column is not effective enough, which leads to heavy phase loss with light and easy t yellow.

The aim of the invention is to intensify the process by increasing the throughput and increasing the degree of separation of the phases.

The goal is achieved by the fact that each separation device jCTBo is made of two contact elements fixed on the shaft in the form of coaxially arranged cylinders, decreasing in height to the periphery in the upper and lower parts of the elements, respectively, while the distance between the cylinders of the upper element is less than the distance between the cylinders the lower element of the upper, separating device, and the distance between the cylinders of the lower element is less than the distance between the cylinders of the upper element of the lower separating device a, and the central elements of each separating cylinder device provided with end faces

Claims (1)

s walls. FIG. 1 shows an extractor, a longitudinal section; in fig. 2 shows a section A-A in FIG. in fig. 3 node I in figure 1; in Fig. A, node II in Fig. T. The rotary disk extractor consists of a vertical cylindrical body 1, partitioned by stacked rings 2, an axially mounted shaft 3 with dispersing disks k, fittings for insertion 5 and 6 and output 7 and 8 of light and heavy phases, respectively. In the upper settling zone, the apparatus is located a centrifugal separator 9. In the lower settling zone there is a centrifugal separator 10. At the top and bottom each separator is enclosed with fixed perforated partitions 11. The design of centrifugal separators is as follows. A row of cylinders 12 installed concentrically with each other relative to each other overlaps the cross sections of the column from the wall of the housing 1 to the blind cylinder 13. The blind cylinder 13 has closed end surfaces. The need for using the blind cylinder 13 is caused by a small centrifugal force near the axis of rotation of the shaft. . The cylinders 12 are mounted on radial blades 14 rigidly connected to a blind cylinder 13, which in turn is fixedly fixed to the shaft 3. The height of the cylinders 12 increases with decreasing diameter. Centrifugal separators can be height-partitioned into separate separator zones, for example, 15 and. 16 (figure 1). In this case, the gap between the cylinders 12 in each separator zone should be different, decreasing from zone to zone in the direction of flow. This arrangement of separators improves their working conditions at increased loads. To prevent the separated liquid from getting into the main flow, cylinders 12 of the upper separator 9 have flanges directed toward the center, and cylinders 12 of the lower separator 10 flanges are wrong from the center. The device works as follows. The heavy phase is introduced through the nozzle 6 into the upper part of the column and gradually moves along the column of the memory books, mixing and contacting in each section with the light phase introduced through the nozzle 5 from below. The light phase moves countercurrently with the heavy phase flow upwards. The easy phase after passing all the working sections of the extractor through the partition 11 enters the space between the cylinders 12 of the centrifugal separator 9, twists them and blades 1. At the same time, the resulting field of centrifugal forces causes the heavy phase droplets to move to the inner surface of the cylinders 12. Here they accumulate to merge with each other and, as they accumulate, flow down from the cylinders 12. The upward movement of the heavy phase is hampered by the edges in the upper part of the cylinders 12. The operation of the lower separator 10 is similar to that of it is only by the difference that the 4jo light phase is pressed hard towards the surface of the smaller cylinder, from where it returns up. The implementation of separators 9 and 10 partitioned in height leads to the fact that the fresh stream containing the greatest amount of the adjacent phase first enters the separator zone with the largest distance between the cylinders 12, in which the separation of predominantly fortified drops, which constitute the main share in the impurity. Partially cleaned flow passes further into the next separator zone in a more frequent arrangement of separation cylinders 12; where droplets of greater dispersion are deposited. As a consequence, the separation of separators improves all their work, especially at increased loads, when an increasing amount of impurities in the main flow causes a decrease in the clearance between adjacent separator cylinders 12. Increasing the height of the cylinders 12c by decreasing their diameter increases the time of fluid movement in the field of centrifugal forces in the central region of the separator. This reduces the non-uniformity of separation due to the variable value of the centrifugal force. Partitions 11 contribute to the localization of the intensive movement of flows within the separator volume. The cleaned is easy and the hard phase through fittings 7 and 8 is removed from the apparatus. The proposed technical solution makes it possible to significantly increase the limiting performance of the apparatus. The invention includes a rotary disk extractor comprising a vertical cylindrical body with stator rings, a rotor with dispersing disks and separation devices located in the upper and lower parts of the body, characterized in that the intensification objective is process, by increasing the throughput and increasing the degree of separation. phase separation, each separating device is made of two contact elements mounted on a shaft in the form of coaxially arranged cylinders, decreasing in height to the periphery in the upper and lower parts of the elements, respectively, while the distance between the cylinders of the upper element is less than the distance between the cylinders the lower element of the upper separating device, and the distance between the cylinders of the lower element is less than the distance between the cylinders of the upper element of the lower separating device, and the central Hbie is cylinders The sides of each special device are provided with end walls. Sources of information taken into account in the examination of 1 Dutch Patent No. 67932, cl. B 01 D tl / O, 1977 (prototype) - j / one Phi21 j ig.