RU1790425C - Contact tray - Google Patents

Description

according to the invention, the central part of the overflow device is muffled from above and below and is provided with a horizontal partition dividing it into superimposed drain chamber provided with a liquid outlet pipe and a receiving chamber provided with an inlet pipe for liquid, while the drain chamber is made with open ends, and its front wall is made with a hole provided with a pivotally fixed and placed beneath her sash.

In FIG. 1 shows a contact plate, plan view; in FIG. 2 - section AA in FIG. 1; in FIG. 3 is a section BB in FIG. 1; in FIG. 4 - plate, general view in isometric view.

The heat and mass transfer plate, composed of parallel mounted inclined plates 1, is divided by longitudinal partitions 2 into the central 3 and peripheral 4 sections with the opposite inclination of the plates. The overflow device plate contains a Central part 5 and the side parts in the form of grooves 6 with an inclination to the Central part. The central part 5 of the overflow device, comprising vertical walls 7, 8, is muffled from above, from below, and is divided by a horizontal partition 9 into chambers located one above the other: drain 11 and receiving 10 with corresponding nozzles 12. The drain chamber 11 is open from the ends and open along the perimeter part is connected to the side grooves 6. The front wall 8 of the drain chamber 11 has a horizontal rectangular hole 13 along the entire width of the central part 5, provided with a pivotally fixed leaf 14 outside the chamber 11. RA 10 is made open in front and provided with an overflow bar 15. On non-working segment parts 16 of the plates there are inclined overflow bars 17 and baffle plates 18.

The plate works as follows.

The liquid from the overlying plate flows down the inclined troughs 6 into the drain chamber 11 of the central part 5 of the overflow device. Here, the total fluid stream is divided in any ratio into two streams. One of them is discharged from the plate through the nozzle 12 (external overflow), and the other, through the gap between the leaf 14 and the front wall 8, formed by the leaf 14 under the action of a liquid column, flows to the central portion 3 of the plate (inner

fluid flow). Liquid also flows here, introduced to the plate through the nozzle

12 and the receiving chamber 10 (for external fluid flow). Magnitude of the combined

the flow entering the irrigation of a separate plate of the apparatus, i.e. its liquid load is determined by the ratio of the values of the internal and external flows and can vary from minimum to limit values for different plates of one apparatus. The gas (steam) flow from the underlying tray, due to the presence of a fixed strip, passes only through the working plate of the plate (pivotally secured shutter 14 due to the increased gas pressure in front of the plate blocks the gas passage through a rectangular hole

13 drain chamber 11). Gas (steam), passage through the gap of the working canvas of the central

0 plot 3 plates, splits the combined fluid flow into drops and carries away the latter. along the central portion 3 to the baffle 18. The liquid droplets on the baffle 18 are effectively separated and

5 drain onto the inoperative segment portion 16 of the plate. Further, the liquid is poured through an inclined overflow bar 17 onto the working surface of the peripheral sections 4 and again dispersed by gas (steam).

0 at the end of the working peripheral sections 4, the entire stream of sprayed droplets is separated as a result of their tangential impact against the wall 19 above the grooves 6 and flows down the inclined grooves 6 into the drain chamber 11

5 underlying plates. The described course of gas (vapor) and liquid flows is repeated at all stages of the contact of the apparatus, but at different liquid loads of these stages. Thus, the central part of the overflow device is muffled from above, from below and its horizontal partition is divided into chambers located one above the other — drain and receiving chambers, equipped with outlet and inlet pipes, respectively, and the discharge chamber is open from the ends and its front wall with a hole provided on the outside of the chamber with a pivotally secured sash provides

0 the possibility of the plate in the apparatus operating simultaneously with the external and internal fluid flow, which allows the apparatus to operate with plates of this design in a wide range of loads

5 by Liquid of individual plates. This achieves optimal irrigation densities of individual plates of the apparatus, and, consequently, optimal hydrodynamic and physicochemical conditions of the apparatus during chemisorption

selective gas purification. In addition, an increase in ultimate fluid loads without reducing ultimate gas loads is provided.

Claims (1)

SUMMARY OF THE INVENTION A contact plate for mass transfer apparatuses in a gas-liquid system, consisting of parallel mounted plates, separated by longitudinal partitions into central and peripheral sections with opposite inclined plates, and an overflow device comprising a central part and lateral grooves installed with an inclined angle to it, distinguishing so that, in order to increase the range of stable operation of the plate on .2 -  /, / - // UI i G i - ... ,, ..., .. / v ... L .......... ...... | , z by varying the values of its overflows, the central part of the overflow device is plugged above and below and is equipped with a horizontal partition dividing it into stacked drain chambers equipped with a liquid outlet pipe and a receiving chamber equipped with an inlet pipe for liquid, while the drain chamber is made with open ends, and its front wall is made with a hole provided with a hinged and located on the outside of its sash. S I -L