RU1789244C - Regular head-piece for mass-transfer processes - Google Patents

Abstract

Usage: in contact devices used in mass transfer apparatus for absorption, desorption, rectification, etc. The purpose of the invention is to increase efficiency by increasing the contact zone and reducing the metal consumption. SUMMARY OF THE INVENTION: A regular nozzle for mass transfer apparatuses contains regularly arranged sheets with openings for the transfer of liquid and gas. Each sheet is made with flanged holes and is provided with an additional contact surface rigidly connected with them located directly below the holes, made in the form of cup-shaped bottoms from the cutouts of a sheet of upstream holes. The bottoms are secured to the sheet by means of strips formed by deep drawing of the sheet material and constituting an additional contact surface. 3 silt, ----

Description

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The invention relates to chemical technology and can be used in contact devices used in mass transfer apparatus for absorption, desorption, rectification, etc.

Contact devices of the type of regular nozzles are known which are characterized by the use of horizontal solid or perforated shelves in them for liquid drainage. The contact between the vapor and the liquid in these devices is carried out both during the movement of the liquid along the shelves and during its cascade falling from the shelf to the shelf.

The disadvantage of these devices is the relatively high consumption of materials, as well as the need for accurate installation of horizontal shelves, since even with the slightest deviation from the horizontal position, the uniform distribution of liquid over

the surface of the shelves and, accordingly, the mass transfer efficiency is reduced.

The closest in technical essence to the claimed device is a nozzle selected as a prototype, which is horizontally arranged sheets with round holes arranged one above the other. Tubes are mounted flush with the upper surface of the sheet openings to form gaps between their lower end and the surface below the adjacent adjacent sheet.

The surface of the nozzles serves to form a liquid film on them and is an additional contact surface.

The disadvantage of the prototype is the high material consumption and considerable laboriousness of manufacture, in addition, this design also requires strict

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the horizontalness of the shelves, since otherwise the uniform distribution of liquid on the shelves is violated and, as a result, the mass transfer efficiency is reduced.

The aim of the invention is to increase efficiency by increasing the contact zone and reducing metal consumption.

This goal is achieved by the fact that in the inventive regular nozzle containing regularly arranged sheets with holes for the flow of gas and liquid, each sheet of the nozzle is made with flanged holes and is provided with an additional rigidly connected with it and located directly under the holes a contact surface made in the form of flanged bottoms from the cutouts of a sheet of upstream holes, said bottoms being fixed to the sheet by means of strips formed by deep drawing of the sheet material and Being additional inclined contact surfaces.

In FIG. 1 shows a cross section of a device; on yig. 2 is a view A in FIG. 1; in FIG. 3 is a view B of FIG. 2.

The regular nozzle for mass transfer apparatus comprises horizontally arranged shelves in the form of sheets 1 with openings 2 for the passage of gas and liquid. Under each hole, plates 3 with flanged edges 4 are rigidly mounted parallel to the sheets 1. The plates 3 are fixed to the sheets 1 by means of strips 5. The plates 3 and strips 5 are, respectively, cuts and lintels from the material of sheet 1, followed by drawing out the jumpers to form strips 5 and stamping flanged surfaces of the plates 3, which form a cup-shaped

Claims (3)

The claims A regular nozzle for mass transfer processes, containing regularly arranged sheets with openings for the flow of gas and liquid, characterized in that, in order to increase efficiency by increasing the contact zone and lowering the metal consumption, each leaf is located directly under the holes mi 2. This embodiment of additional contact surfaces is preferred, but possible other options for securing them, for example by spot welding strips 5 with sheet 1 and flanged bottoms 3. This fixing option can be applied in the case where the stretching of the strips 5 is difficult for some reason. The nozzle works as follows. Through a liquid distributor (not shown in Fig.), The liquid from above is evenly fed to the nozzle, gets onto horizontal sheets (shelves) 1 and flows through the flanged edges of the holes 2 forming a closed loop to additional contact surfaces 3 and 5. At the same time, steam is supplied from below. interacting with liquid on all contact surfaces of the nozzle. Using the proposed nozzle allows you to increase the efficiency of the mass transfer process and reduce material consumption, since the number of contact surfaces in this nozzle is twice as high as in the known ones, the presence of flanging along the edges of the holes and cup-shaped bottoms allows more even distribution of the liquid on contact surfaces and reduce the negative impact of the inevitable errors in the manufacture and installation of the nozzle. A significant advantage is the use of notches and lintels, i.e., waste material from the sheet material generated during the manufacturing of horizontal shelves as additional contact surfaces. This allows to reduce material consumption and also simplify nozzle mounting. filled with flanged holes and provided with an additional contact surface rigidly connected with it and located directly below the holes, made in the form of cup-shaped bottoms from cutouts of a sheet of upstream holes, the bottoms being fixed on the sheet by means of strips formed by deep drawing of the sheet material. 0t / e. /