SU814390A1 - Extractor - Google Patents

Description

(54) EXTRACTOR

I

The invention relates to apparatus for carrying out mass transfer processes, and more specifically to apparatus for carrying out extraction processes in liquid-liquid systems.

A pulsating extractor is known, which includes a vertical body with contact plates located therein alternating with perforated plates equipped with rows of plates 111 hinged on them.

The disadvantage of this extractor is that the efficiency of the process is not high enough due to the significant longitudinal mixing of the phases.

The purpose of the invention is to increase the efficiency of the extractor by reducing continued mixing and increasing the delay of the dispersed phase.

This goal is achieved by the fact that the plates with plates are equipped with additional plastics, which are installed relative to the peripheral plate on the opposite side, while the adjacent central and peripheral plates of each plate are rigidly interconnected. Other

sign is UT made of U-shaped. In addition, the plates of the plates are located in relation to the same plates of the adjacent plates in the mirror image.

FIG. 1 shows extra 1ktor, longitudinal section; in fig. 2 - a possible variant of connecting adjacent plates of j-grooves. in fig. 3 and 4 options, placement of valves on the plates of the apparatus.

The apparatus consists of a vertical housing 1 with nozzles 2 for the supply

5 N output contacting liquid phases, perforated contact plates

3 and perforated tars (box 4 with hinged at the holes of the plastic screw 5, it acts as valves. Plates 5 are mounted on the plate 4 so that two adjacent holes 6 and 7 of the plate are closed from different sides. Plates 5 are two

5 adjacent holes are rigidly connected by a spacer with a common bridge 8 and about. interconnect direct and check valves. On adjacent plates

4plate 5 valve holes

0 performed in zerkgshnom execution.

The axes of the hinge plates of the valves can be located radially (Fig. 4) and along concentric circles (Fig. 3) in the plane of the plate.

The device works as follows.

The fluid in the extractor is said to be reciprocating, light and heavy phases are moving countercurrently. Dispersible, for example, an easy phase with an impulse upwards, passing through a perforated plate 3, comes in the form of drops to plate 4 to synchronous working plates, 5 forward and backward valves. In the zones of the closing valve plates, the hydraulic resistance of the plate increases, and under the plates a portion of the dispersed phase accumulates. In the resulting layer of the phase, the concentration of the extractable component is equalized throughout its volume, and in the zone of synchronously operating opening valve plates the dispersed phase passes through the apertures. From the edges of the moving plates are broken, additionally turbulent flow. Drops trapped in the zone of increased turbulence, under the action of cutting forces, are crushed into smaller particles and carried away by the main flow. At this age, the contact surface of the phases and, accordingly, the intensity of mass transfer

With a downward pulse, the valve plates 5 previously closed are opened. Another dispersion of the phase accumulated under the plates occurs. Due to the leveling off of the concentration of the extracted component in the volume of the dispersed phase, the concentration gradient of this component at the phase interface increases, which contributes to an increase in the mass transfer driving force. In the zone of closing of the valve plates 5, the drops coalesce. With synchronous ph6oTe valve plates beneath the plates or plates, depending on the direction of movement of the dispersible phase, a layer of the coalesced phase is constantly located.

With a radial arrangement (Fig. 4) of the axes of the hinges of the plates in the planes of the plates 4 in the apparatus, rotational movement of the liquid flow is created, and on the adjacent plates 4 the flow rotates in opposite directions, if the axes of the hinges are stretched along concentric circles (Fig. 3) a cross-current mode is created in the extractor. In both cases, a redistribution of flows occurs, which leads to a decrease in the longitudinal movement and an increase in the driving force of mass transfer.

Claims (3)

1. An extractor comprising a vertical body with contact plates located therein alternating with perforated plates equipped with hingedly mounted on them rows of plates arranged in relation to each other from opposite sides of the plate, and fittings for input and output of phases, characterized in that, in order to increase the efficiency of the extractor by reducing the degree of longitudinal mixing of the phases, plates with plates are provided with additional plates installed in the hinge to the peripheral plate on the opposite side, while the adjacent central and peripheral plates of each plate are rigidly interconnected. 2. The extractor according to claim 1, wherein the plates are U-shaped. 3. Extractor on PP. 1 and 2, in that the plates of the plates are located with respect to to the plates of the same name of the neighboring plates in a mirror image. Sources of information taken into account in the examination 1. USSR author's certificate No. 596266, cl. On 01 D 11/04, 1975 (prototype). -5 X 1 .Z