SU799774A1 - Contact disc for mass exchange apparatus - Google Patents

Description

(54) CONTACT PLATE FOR MASS REJECTED APPARATUS

one

The invention relates to a mass debris apparatus and can be used in distillation and absorption apparatus.

A well-known jet-directional plate, comprising a web with perforated vertical partitions, separating it into sections.

The installation of vertical partitions on the jet canal allowed to increase the supply of liquid and its residence time on the plate, and thereby increase the efficiency of interaction between the phases 13.

However, such plates, despite their obvious advantages, have a narrower range of stable operation than ordinary jet-type ones and are characterized by a sharp decrease in efficiency in the area of increased speeds of steam flow at low liquid loads.

A known contact plate includes a base with cutting elements in the form of scales, bent at an angle, and vertical partitions dividing the base into sections made with slots placed along the partitions with a certain pitch and provided with directional eegements 2.

However, such plates only part of the gas-liquid stream passes through the holes in the partitions. The main part of the gas-liquid flow interacts with the solid part of the partitions. At the same time, turbulization of flows deteriorates, which reduces the contact surface of the phases.

The aim of the invention is to improve the range of stable operation by ensuring the deviation of the entire gas-liquid flow from the surface of the vertical partitions and more uniform gas bubbling.

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This goal is achieved by the fact that the slots in the partitions are made along the entire height, and the directional elements are located in the adjacent partitions in the opposite direction.

0 relative to each other.

It is advisable that the slots in the partitions have a shape that expands downwards.

FIG. 1 shows a plate,

5 general view; in fig. 2, section A-A in FIG. i; in fig. 3 - node I in figure 2; in fig. 4 — making slits in the form of a rectangle; in fig. 5 - the same, in the form of a triangle; figure 6 -

0 the same, in the form of a trapezoid.

The plate includes a base 1, in which, in a checkerboard pattern, crushed elements in the form of scales 2, bent at a certain angle, are molded. Vertical partitions 3 are installed on the base of the plate, dividing it into sections. The mucus device of the plate includes a drain partition 4 Gui input overflow bar 5. In the vertical partitions are made to the full height of the slot, which are placed along the length of the partition with a certain step. The directional elements of the petals thus formed in the partitions are bent at an angle i to the direction of fluid drawdown. Moreover, the direction of the bending of the petals in the partitions adjacent in the course of the movement of the liquid is reversed. In order to increase the capacity of the liquid phase, the slots 7 in the vertical partitions can have a downwardly expanding shape, for example, triangular or trapezoidal. The plate is operated as follows.

The vapors rising from the underlying plate pass through the holes in the base of the plate, the liquid enters from the overlying plate through the drain and moves along the plate to the discharge point to the underlying plate. Steam jets, going out from under the flakes in the plate, for example the first section, hit the sloping surface of the petals of the vertical to the partitions, deflect them and enter the next section along the liquid, for example the second, at an angle to the direction of the flow of liquid. Here, these steam jets intensively interact with the vapor flow emerging from the flakes of the second section. In this case, an intensive interaction of the contacting phases and high efficiency is ensured. In the next sections along the flow of the fluid, the contacting process is repeated. To prevent the liquid from being blown to one side of the plate and to ensure more uniform steam bubbling, in adjacent partitions along the liquid partitions, the petals are turned in opposite directions.

The combination of the jet sheet with vertical combs in the shape of a comb, the petals of which are turned at an angle to the direction of fluid flow, in each section provides an intensive interaction of the contacting phases and the interfacial surface. Partitioning plates are especially effective.

New design in devices operating with large loads on gas and liquid, since the cross-sectional area for the passage of gas-liquid sweat, and is almost equal to the area of the refills (minus the area of the ends of the petals). Thus, the proposed construction of partitions practically does not deform the gas-liquid flow, but only changes the direction of its movement. In addition, when

the interaction of the gas-liquid flow with the partition of the new design decreases the vertical component of the velocity, which leads to a decrease in the liquid entrainment.

5 These factors provide the ability to work with high efficiency in a wide range of loads for steam and liquid and make the proposed plate promising.

0 for use in high production, oil refining, petrochemical, chemical, gas and other industries.

Claims (2)

1.Contact plate for mass transfer apparatus, comprising a base with cutting elements in the form of scales bent at an angle, and vertical partitions dividing the base into sections made with slots placed along partitions with a certain pitch and equipped with directional elements, differing in that, in order to expand the range of stable operation by ensuring the deviation of the entire gas-liquid flow from the surface of the vertical partitions and more uniform gas bubbling, cut through Kah formed over the entire height and directional elements arranged in adjacent partitions in the opposite direction relative to each other. 2. Plate according to claim 1, characterized in that the slots in the partitions have widened  top down form. Sources of information taken into account in the examination 1. USSR author's certificate No. 160502, cl. B 01 D 3/22, 1963. 5 2. Anistratenko V.A. and other. Contact devices of mass transfer apparatus with unidirectional movement of phases, M., TsNIITEIpischeprom, 1971, p. ten. L 1d I M .J / -.} L,) TO FIG. a Have