RU177443U1 - DEVICE FOR HEAT AND MASS EXCHANGE PROCESSES - Google Patents

Abstract

This utility model is designed to conduct heat and mass transfer processes in a gas-liquid system and can be used in the chemical, petrochemical, metallurgical, food industries and energy. The technical result is to increase the efficiency of heat and mass transfer processes in a gas-liquid system by increasing the rigidity of the structure, increasing the specific area contact surfaces of the phases in the spaces between two adjacent vertically adjacent glasses and annular channels. The technical result is achieved the fact that in the apparatus for heat and mass transfer processes, comprising a housing, nozzles for input and output of technological flows of gas and liquid, cylindrical glasses with drain holes and ring channels in an amount determined by the technological calculation, installed coaxially inside the apparatus’s body, equidistant from each other, according to The present utility model supports for glasses are curved plates installed in the space between the annular channels parallel to each other, adjacent to the walls of the housing and have Rectangular slots designed to fit the appropriate cups.

Description

This utility model is intended for carrying out heat and mass transfer processes in a gas-liquid system and can find application in the chemical, petrochemical, metallurgical, food and energy industries.

An analogue is a contact plate for mass transfer processes, on which drain glasses having vertical walls are installed [patent GB 1422131, B01D 3/20, 1972]. The contact plate is divided by the corresponding support beam along its diametrical line into two sections of the plate. On each such section of the plate there is a corresponding series of parallel rectangular drain cups located perpendicular to the support beam. Moreover, between the drain glasses there is a bubble zone with plates of various designs. A row of drain glasses located in one section is staggered relative to another row of drain glasses located in the opposite section of the plate. In this case, the drain glasses are open from its upper end, and the lower end is provided with a plurality of liquid drain holes.

The disadvantage of the analogue is the low efficiency and intensity of the ongoing mass transfer processes in the bubble zone. In addition, the contact plate, regardless of the type of contact devices installed, has a high hydraulic resistance, which is due to the need for a gas stream to pass through the liquid layer located in the bubble zone of the contact plate.

An analogue is a column for contacting gases with liquids, equipped with a number of plates arranged at a certain interval relative to each other in the axial direction [patent RU 2252059, B01D 3/20, 2001]. Each of the plates has, respectively, two sections, dividing one relative to the other along the diametrical line of the indicated plate. Each of the plate sections contains a plurality of parallel rectangular drain cups, a plurality of fluid receiving zones and a bubble zone located between the draining cups and the liquid receiving zones. Each of the receiving zones for the liquid is located directly under the corresponding drain cup of the next of successively arranged one above the other plates, which is located directly above, while the drain cups are open from its upper end and closed from the lower end. The lower end is provided with a plurality of liquid drain holes, and the drain glasses themselves extend from the diametric line to the side of the plate circumference line, while being positioned so that the ends of the drain glasses placed in both sections of the plate take an appropriate position along the diametric line in an alternating position .

The disadvantage of the analogue is the drop entrainment of the liquid from the underlying plate to the overlying one with an increase in gas velocity, which significantly reduces the mass transfer efficiency of the process.

The prototype is a contact device for heat and mass transfer processes [patent RU 162855, B01D 3/32, 2016], including a housing, nozzles for input and output of technological flows of gas and liquid and a number of cylindrical glasses with drain holes and ring channels installed inside the device’s body, while the glasses are installed coaxially to the body, and the annular channels are installed in the space between the glasses is equidistant from the overlying and underlying glasses, adjacent to the walls of the body, and the inner diameter of the central channels coincides with the outer diameter of the glasses, and in the lower part of the side walls of the glasses and annular channels around the perimeter there are many holes for liquid drain.

The disadvantage of the prototype is the relatively low efficiency of heat and mass transfer processes occurring in the spaces between two adjacent in height cups and ring channels, where the interaction of falling jets and drops of liquid with an upward flow of gas; low rigidity.

The objective of the utility model is the development of apparatus for heat and mass transfer processes, which eliminated the disadvantages of analogues and prototype.

The technical result is to increase the efficiency of heat and mass transfer processes in a gas-liquid system by increasing the rigidity of the structure, increasing the specific surface area of the contact of the phases in the spaces between two adjacent glasses and annular channels in height.

The technical result is achieved by the fact that in the apparatus for heat and mass transfer processes, including the housing, nozzles for the input and output of technological flows of gas and liquid, cylindrical glasses with drain holes and ring channels in an amount determined by the technological calculation, installed coaxially inside the apparatus body is equidistant from each other , according to the present utility model, the supports for the glasses are curved plates mounted in the space between the annular channels parallel to each other, with ykayuschie to the walls of the housing and having a slot of rectangular shape designed for mounting the respective cups.

The essence of the utility model is illustrated by the following drawings:

- in FIG. 1 shows a diagram of the proposed apparatus for heat and mass transfer processes in a longitudinal section;

- in FIG. 2 cross section of the apparatus for heat and mass transfer processes.

Designations in the drawing:

1 - housing;

2 - pipe for fluid injection;

3 - pipe outlet fluid;

4 - gas inlet pipe;

5 - pipe for gas outlet;

6 - glasses;

7 - annular channels;

8 - curved plates;

9 - slots in the plates;

10 - holes for fluid drain.

Apparatus for heat and mass transfer processes includes a housing 1, a fluid inlet pipe 2, a fluid outlet pipe 3, a gas inlet pipe 4, a gas outlet pipe 5. In the housing 1, glasses 6, annular channels 7 are coaxially mounted. The annular channels 7 are made so that they the inner diameter was equal to the outer diameter of the glass 6. In this case, the glasses 6 and the annular channels 7 are installed inside the housing 1 equidistant from each other (Fig. 1). The supports for the glasses 6 are curved plates 8 installed in the space between the annular channels 7 parallel to each other, adjacent to the walls of the housing 1, and having slots 9 of a rectangular shape, designed to install the respective glasses 6. In the bottom and at the bottom of the side walls of the annular channels 7 and glasses 6 along the perimeter, holes 10 are made for liquid drainage (Fig. 2).

The proposed device operates as follows.

The liquid enters the apparatus body 1 through the nozzle 2 and enters the surface of the glasses 6 and the annular channel 7, the liquid accumulates in them in some layer. Through the openings 10, the liquid flows from the glasses 6 and the annular channel 7 in the form of separate jets and enters the surface of the underlying annular channel 7 and the glasses 6, respectively, where it again accumulates and, in turn, flows in the form of jets onto the surface of the following underlying elements. Thus, the liquid from the upper part of the apparatus gradually flows into the lower. When moving the jets of liquid on the surface of curved plates 8 having slots 9 of a rectangular shape for installing the respective glasses 6, the liquid is distributed in the form of a film. In this case, the flowing liquid film is in contact with the upward flow of gas entering the apparatus through the nozzle 4. Further, the formed film, colliding with the surface of the liquid inside the glasses 6 and the annular channel 7, creates a developed phase contact surface. The contact of gas and liquid occurs during the penetration of ascending gas by jets of liquid, as well as in a liquid layer on the surface of glasses 6 and annular channels 7. Gas is discharged from the apparatus through pipe 5 and liquid through pipe 3. When jets fall on the liquid surface into the depth of the layer gas bubbles that actively mix the liquid are carried away, create a developed constantly renewed phase contact surface, which is determined by the presence of relatively small gas bubbles in the liquid layer and the droplets escaping from the liquid.

To ensure equal flow of the apparatus, and therefore minimum hydraulic resistance, the annular channels 7 and the glasses 6 are installed in such a way that the space between the glasses 6 is equidistant from the overlying and underlying channels 7 adjacent to the walls of the housing 1, and the inner diameter of the annular channels 7 coincides with the outer diameter glasses 6.

In the proposed apparatus for heat and mass transfer processes, in comparison with the prototype, the specific surface area of the contact of the phases in the spaces between two adjacent vertically adjacent glasses and ring channels increases due to the installation of curved plates with rectangular slots. Moreover, curved plates, being supports for glasses and annular channels, increase the rigidity of the structure. In addition, it is known that the film flow of a liquid is characterized by higher heat and mass transfer coefficients than atomization of a liquid; therefore, the overall efficiency of heat and mass transfer processes increases.

Thus, in the proposed apparatus for heat and mass transfer processes, an increase in the specific surface area of the contact of the phases and heat and mass transfer coefficients in the spaces between two adjacent vertically adjacent glasses and ring channels is achieved, which leads to an increase in the overall efficiency of heat and mass transfer processes in the gas-liquid system, is also achieved increased rigidity.

Claims (1)

Apparatus for heat and mass transfer processes, including a housing, nozzles for input and output of technological flows of gas and liquid, cylindrical glasses with drain holes and ring channels in an amount determined by the technological calculation, installed coaxially inside the apparatus’s body, equidistant from each other, characterized in that the supports for cups are curved plates installed in the space between the annular channels parallel to each other, adjacent to the walls of the housing and having slots of a rectangular shape rmy designed for mounting the respective cups.

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