The random packing element for heat and mass transfer apparatus

 

(57) Abstract:

Usage: in the chemical, refining and other industries, in the implementation of the rectification, absorption, and other heat and mass transfer processes in the respective apparatuses. The inventive element of the random packing, comprising a housing in the form of surfaces of revolution with holes and petal limb located inside the body, the body of each nozzle element made in the form of a hemispherical surface of rotation, the end of which may be accomplished by crimping. In an embodiment, the body of each nozzle element made in the form of a closed surface of rotation, the ends of which are formed by the limb portion of the side surface of the body, the shape of the ends of the casing may be either spherical or conical. 4 C.p. f-crystals, 5 Il.

The invention relates to the chemical, refining and other industries and can be used in the implementation of the rectification, adsorption and other heat and mass transfer processes in the relevant mass transfer devices.

The prior art various elements of irregular attachments, such as cylindric is ementa petals having a different form for example, arcuate, see an Overview "Foreign attachment devices of mass transfer equipment", Containertypes, M. 1982, S. 4-5, Fig. 3, 4 [1]

Also known semi-cylindrical elements nozzles, representing a cut in the median plane of the hollow cylinder, the surface of which is made with perforation, with curved inward (concave) curved petals, see[1] S. 8, Fig. 6.

In addition, well-known saddle-shaped elements of the nozzle, the surface of which is formed by a combination of conical and cylindrical surfaces, see [1] S. 9, Fig. 7.

To the saddle-shaped elements nozzles are also elements of the nozzle type INTALOX, each of which is formed an arcuate flanged strip with vyshtampovanny wall and bent inward petals, see [1] S. 9, Fig. 8.

For all elements of the above nozzles, related by way of laying to irregular (bulk) nozzles characteristic, depending on the shape forming elements (cylindrical, semi-cylindrical, a saddle-node) various hydraulic resistance and the efficiency of mass transfer.

However, due to the fact that these nozzles are used in columns p is derivada distribution grids (plates), not excluded such position (orientation) in the column, when the mass-transfer surface elements nozzles are inefficient relative to the direction of flow of the contacting phases. For example, from the point of view of efficiency of mass transfer, the most advantageous position of a cylindrical or semi-cylindrical, or a saddle-node form elements nozzles, is the horizontal position of the elements, i.e., the maximum overlap their mass-transfer surfaces of a horizontal section of the column.

When mounting the random packing due to the large amount of work in 90% of cases the elements of the nozzle fall asleep and not placed in layers, and therefore with high probability, up to 50% for example, the cylindrical elements of the nozzles can be placed in a vertical position (to stand on the side of the case). This leads to a significant decline in her health, since the vertical position of the specified element mass transfer surface (surface of the petals and the side surface) off from work relative to the vertical direction of the contacting phases.

A prototype of the invention selected above irregular nozzle from the cylinder the analogues, namely probable inefficient location in the packing layer of its elements from the point of view of efficiency of mass transfer.

The claimed invention is directed to a solution to improve the efficiency and performance of mass transfer in packing layer.

The solution of this problem is provided by the fact that the random packing element comprising a housing in the form of surfaces of revolution with holes and petal limb located inside the body, the body of each nozzle element made in the form of a hemispherical surface of rotation, the end of which may be accomplished by crimping. In the embodiment, the case each element of the nozzles is made in the form of a closed surface of rotation, the ends of which are formed by the limb portion of the side surface of the body, the shape of the ends of the casing may be either spherical or conical.

The technical result from the use of the invention is to improve the performance and efficiency of mass transfer at virtually the same work on the fabrication and installation of random packing.

In Fig.1 shows a General view of the nozzle element of Fig.2 is a top view of Fig.3,4,5 same, (variants of the condition 1 in the form of surfaces of revolution with holes 2 and petal limb 3 located inside the housing 1. The surface of rotation of the housing 1 is made in the form of a hemisphere, the end of which is provided with a flared 4. In versions of the surface of rotation of the housing 1 is made in the form of a closed surface (see Fig.3,4,5) part of the lateral surface. The bottom of the casing 1 in these variants can be executed or spherical, or conical. Thus, in these embodiments, the overall contour of the nozzle element has the form of a closed geometric surface (figures) rotation, while the side and end surfaces of the bent inside shapes and forms together with the outer (lateral) surface of the additional mass-transfer surface.

In an embodiment of the nozzle element in the form of a hemisphere petals are located inside of the hemisphere, and the folds of their end parts are also located inside of the hemisphere. This eliminates the coupling of the individual elements of the nozzle during its installation, as well as their location in each other. In addition, by placing the petals in different planes, any position of the nozzle is in operation, however, the most advantageous from the point of view of mass transfer, is a position where the nozzle is located in the layer flared down.

During installation of the nozzle PRIV elements of the nozzle in both cases, each element of the nozzle will be placed in the most advantageous position for engagement with the threads of the interacting phases flared up or down for the variant with a hemispherical surface and always on the side for options with a closed surface.

This allows the operation to significantly improve the efficiency and performance of mass transfer at virtually the same cost to manufacture.

1. The random packing element for heat and mass transfer apparatus, comprising a housing in the form of surfaces of revolution with holes and petal limb located inside the body, wherein the body is made in the form of a hemispherical surface of the rotation.

2. Item under item 1, characterized in that the hemispherical end surface of the rotation performed flared.

3. The random packing element for heat and mass transfer apparatus, comprising a housing in the form of surfaces of revolution with holes and petal limb located inside the body, wherein the body is made in the form of a closed surface of rotation, the ends of which are formed by the limb portion of the side surface of the body.

4. Item under item 3, characterized in that the ends of the housing are spherical.

5. Item under item 3, characterized in that the edges are made conical.

 

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