SU753443A1 - Mass exchange apparatus - Google Patents

Description

The invention relates to chemical technology and can be used in the chemical and other industries in apparatus with a three- to five-phase vortex layer for treating a granular material of a liquid for carrying out processes of leaching and extraction of solid Materials with liquid solvents. tO

A solid-liquid-gas mass transfer apparatus for contacting in a system is known, comprising a horizontal rectangular case with an inclined bottom, vertical 15 partitions with windows made in them, located in the case and dividing it into contact chambers, horizontally placed in the center of the windows, a horizontal perforated partition located near the bottom, overflow pipes closed with filtering nets and fixed in vertical partitions, and fittings for entry and entry of pea 25 agents 1 ..

In a known apparatus, the gas supplied from below twists the mixture of liquid with granular material, part of which, moving downward, is gripping-30.

pivoting plate and falls into the next section. But through this same flow, liquid flows in opposite directions and, therefore, for a given structure, the highest fluid velocity depends on the reverse movement through the solid phase. In addition, with an increase in the supply of liquid, the countercurrent process for polydisperse materials can be & collapsed due to the re-entrainment of fines by liquid / hos.

The purpose of the invention is to intensify the process by eliminating the longitudinal movement.

The goal is achieved by the fact that the device is equipped with reloading devices mounted on the shaft in the windows, and the shaft is installed with the possibility of reciprocating movement. In addition, the device is equipped with horizontal visors fixed in the lower parts of the windows on the vertical partitions, and the overload devices are made in the form of a pair of parallel vertical plates, and. buckets.

Figure 1 shows the apparatus, a longitudinal section; figure 2 - section

-A nafig .; on fig.Z - node B on Ig.1; Fig. 4 shows a device for reloading, made in the form of a coke; Fig. 5 is a section B-B in Fig. 4 in Fig. b is a view of D in Fig. 3.

The mass transfer apparatus comprises a housing 1 with an inclined bottom 2, in which a gas distribution grill 3 is made for uniform supply of gas creating a circulation loop using a longitudinal partition 4. The housing of the apparatus has the following fittings: input 5 and output 6 of liquid, load 7 and discharge 8 of granular material, input 9 and gas outlet 10, and divided into sections 11 by transverse partitions 12, in which devices for overloading are made of shaft 13, plates 14 and bottom 15 fixed on partition 12. For the movement of fluid, provide downwardly bent nozzles 16, at the entrance to which grids 17 are installed, having a convex shape, for their regeneration by a suspension stream. In Figures 1-6, the movement of a solid material is shown by solid arrows, liquids - intermittent, gas wavy.

The granular material is fed to section 11, where it is mixed with liquid and lowered along the inclined bottom 2, where it is weighed by gas flowing from the bottom through the grid 3 into all sections of the apparatus. The suspension rises to the suspension mirror, where the solid phase settles down, and part of it gets into the device for overload, and the gas is separated and through the separation space 18 goes to the fitting 10. Periodically, after a certain time, the shaft moves along the movement of solid material through the apparatus the width of the gap between the plates 14 and the solid phase 19 falls into the adjacent section, after which the shaft returns to its original position. The plate 14 is located in the alignment of the partition 12, and when the shaft moves, the plate takes position 20.

As a variant of an overload device, when operating the apparatus with a fine-grained solid phase, a bucket is provided, made of plates 14 fixed to the bottom 15. In this case, the amplitude of the reciprocating movement to the adjacent sections for unloading the solid phase should additionally turn around its axis 180 at position 22. The solid phase leaves the bucket and then the bucket returns to position 21 by turning and then moves to its original position. In each section of the apparatus, an intensive FLOW of the mixture is created along a closed loop with countercurrent flow of liquid and solid phases from section to section.

Claims (1)

Invention Formula 1, A mass transfer apparatus for contacting solid solid liquid-gas in a system containing a horizontal rectangular case c. an inclined bottom, vertical partitions with windows made in them, located in the housing and dividing it into contact chambers horizontally repositioned in the center of the windows 5 shaft, horizontal perforated partition, located near the bottom, overflow pipes, closed with filtering grids and fixed in vertical partitions, and reagent inlet and outlet connections, which, in order to intensify the processes by eliminating - longitudinal movement, it equipped with reloading devices mounted on the shaft in the windows, and the shaft is installed with the possibility of reciprocating movement, 2, Apparatus pop, 1, characterized in that it is provided with horizontal canopies attached to the lower parts of the windows on vertical partitions, and the overload devices are made in the form of a pair of 4 vertical plates, 53. The apparatus according to claim 1, which differs from the fact that the reloading devices are made in the form of buckets, Sources of information, 0 taken into account in the examination 1, USSR Author's Certificate No. 171984, cl. On 01 D 15/02, 1965 (prototype).