RU24952U1 - NOZZLE FOR HEAT AND MASS TRANSFER APPARATUS - Google Patents

Description

2002

// ltJifftol zT 19

NOZZLE FOR HEAT - MASS TRANSFER

The utility model relates to nozzles for heat and mass transfer apparatuses and can be used for rectification, separation, absorption, desorption processes, when working with highly aggressive media and others in the oil refining, petrochemical, chemical and related industries.

Known nozzle for heat and mass transfer apparatus containing a package of mesh corrugated sheets (see, for example, "Modern column equipment for mass transfer processes in gas-liquid systems" SCHSTINEFTEMASH, M, 1977. pp. 33-35)

The closest in technical essence is the nozzle selected for the prototype by a nozzle for heat and mass transfer apparatus, containing restrictive elements and supporting elements located between them with a corrugated mesh sleeve wound thereon.

BOl J 19/32

DEVICES

made of alloy steel wire, (see, for example, St. P.M. No. 005738, 1997)

For the manufacture of the known nozzle, a metal wire of small diameter is used, because with an increase in the diameter of the wire, the manufacturing process of the mesh becomes more difficult due to an increase in the elasticity of the wire. The known nozzle has a limited service life even at a low corrosion rate due to the small diameter of the wire. The corrugations in the well-known nozzle poorly retain their shape and smooth out over time, free channels are formed in the nozzle pack, which lead to bypass of the steam (gas) flows and, consequently, to a decrease in the efficiency of the nozzle. In addition, the use of a metal mesh nozzle for the separation of products with highly aggressive media is limited due to the insufficient resistance of the metal material to the corrosive effects of the medium.

The technical problem to which the utility model is directed is to increase the efficiency of the nozzle by achieving a regular nozzle structure, maintaining shape, providing high performance during prolonged operation of the nozzle when working with highly aggressive environments, stable operation at high irrigation densities, increasing separation ability and nozzle service life.

The solution to this problem is achieved by the fact that the nozzle for heat and mass transfer apparatus, containing restrictive elements and layers located between them; other elements with a corrugated mesh sleeve wound on it, according to a useful model, the sleeve is made of synthetic material with unidirectional folds transverse relative to its axis, in rows, while the sleeve is stitched with solid seams parallel to its axis, the middle of each section of the fold located between the stitched seams is bent into

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the opposite side relative to the direction of the fold and stitched with an additional continuous seam with the formation of corrugations.

In FIG. 1 shows a front view of a nozzle for heat mass transfer apparatuses.

In FIG. 2-top view

In FIG. 3 - shows a fragment of a sleeve made of synthetic material.

In FIG. 4 a section along A - A of FIG. 3

In FIG. 5 is a section along BB-B of FIG. 3

The nozzle for heat and mass transfer apparatuses contains restrictive elements 1,2 and supporting elements 3 located between them with a corrugated sleeve 4 made of mesh made of synthetic material with unidirectional folds 5 transverse relative to its axis and arranged in rows, while the sleeve is stitched with solid seams 6 parallel to its axis, the middle 7 of each part of the fold located between the stitched seams, bent in the opposite direction relative to the direction of the fold and stitched with an additional solid m seam 8 to form corrugations 9.

As a structural material can be lavsan, plastic and other synthetic materials.

The nozzle for heat - mass transfer apparatus works as follows:

The liquid is uniformly fed to the upper part of the nozzle, which flows down the hose mesh made of synthetic material. The implementation of the sleeve with transverse folds unidirectional relative to its axis, arranged in rows and the presence of continuous seams allows you to fix them, the corrugations lead to the formation of a regular structure of the nozzle. Narova (gas) flow enters from below and, moving along the channels formed by the corrugations of the sleeve.

made, for example, from lavsan, is in contact with a flowing liquid film. For the manufacture of the sleeve can be used material woven or knitted from thick threads forming a hose net, which stabilizes the liquid film of a larger thickness, leading to stable operation at high densities of irrigation in the process of mass transfer.

In the case of using the nozzle as a separator, the gas-liquid flow moves along zigzag channels formed by the corrugations of the hose mesh, repeatedly changing the direction of movement. Drops of liquid, which have a greater inertia compared to gas, collide with the structure of the network and form stable ring-shaped liquid films on it, flowing down under the action of gravity.

The nozzle is reliable in working with highly aggressive environments. For the manufacture of mesh sleeves, synthetic yarns of considerable thickness can be applicable, which leads to stable operation at high irrigation densities, to increased work efficiency and nozzle service life.

The authors:

The applicant is the patent holder of LLC NPK Kedr-89 General Director rector - Yu.N. Lebedev

t / rLtfji. V.G. Chekmenev

K.V. Baklashov (

Claims (1)

A nozzle for heat and mass transfer apparatus containing restrictive elements and supporting elements located between them with a corrugated mesh sleeve wound thereon, characterized in that the sleeve is made of synthetic material with unidirectional folds transverse relative to its axis and arranged in rows, while the sleeve is stitched with solid seams parallel to its axis, the middle of each section of the fold located between the stitched seams, bent in the opposite direction relative to the direction of the fold and stitched additional ADDITIONAL continuous weld to form corrugations.