RU20254U1 - CONTACT ELEMENT FOR HEAT AND MASS TRANSFER APPARATUS - Google Patents

Description

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CONTACT ELEMENT FOR HEAT AND MASS TRANSFER APPARATUS

The utility model relates to contact elements of heat and mass transfer apparatuses and can be used for rectification, absorption and desorption processes in the oil refining, petrochemical, chemical and other industries.

A vortex apparatus for contacting vapor and liquid is known, comprising a housing and vortex elements located along its height on the canvas, each of which is surrounded by a cylindrical shell, in the upper part of which a separator is located, and contains an overflow pipe located centrally inside the shell (USSR Certificate of Authorship No. 182108, VOYU 3 / 26.1964).

The closest in technical essence is the contact element selected by the applicant for heat and mass transfer apparatus, containing a swirler, a separation shell coaxially located relative to it, made with slots and equipped with an annular separator, an overflow pipe with a reflector located centrally inside the shell (USSR Autonomous Certificate No. 580868, VOYU 3/30, 1977).

The technical problem, which the utility model is aimed at, is to significantly increase the productivity of the contact element in liquid and expand the range of stable operation.

The solution to the technical problem is achieved by the fact that the separation shell and overflow pipe are made of shells coaxially located at a distance from each other, while the contact element is provided with additional swirls, each of which is installed between coaxially located shells, and is made with a central hole, the diameter of which is smaller than the diameter overflow pipes. It is advisable to carry out each subsequent lower shell with a smaller diameter and place the slots on the upper coaxially located separation shell.

In FIG. 1 is a sectional perspective view of the contact element; FIG. 2 shows a contact element with diameters of separation shells and overflow pipes decreasing downward.

The contact element for heat and mass transfer apparatuses comprises a swirler 1, a separation shell coaxially arranged relative to it, composed of coaxially arranged shells 2, 3, the upper of which is provided with slots 4 and an annular separator 5, an overflow pipe made up of coaxially arranged shells 6, 7 mounted at a distance from each other and centered inside the separation

VOYU 3/30

shells. The overflow pipe is equipped with a reflector 8. The contact element is equipped with additional swirls 9, each of which is installed between the coaxially located shells 2, 3 and is made with a central hole 10, the diameter of which is smaller than the diameter of the overflow pipes. It is advisable to lower shell 3 and overflow pipe 7 with a smaller diameter., And the slots 4 to perform on the upper coaxially located separation shell 2.

The contact element operates as follows. Steam (gas) enters the contact element from below, sequentially swirls in swirls 9 and 1, making contact with the liquid entering the contact element from above through overflow pipe 6 and distributed by overflow pipes 7 and holes 10 to each swirl 1, 9. The steam (gas) flow swirled on each swirler picks up the liquid entering the swirl, which, after contact with steam, is discharged from the element through the gap between the separation shells 2, 3 and swirls 1, 9. On the upper separation shell, the separator The fluid swirling of the vapor-liquid flow is carried further through the slot 4 and the annular separator 5, .a also due to backspin stream using reflector 8.

Performing a separation shell and an overflow pipe from shells coaxially spaced from each other, the presence of additional swirls installed between coaxially located shells, the execution of each additional swirl 9 with a central hole, the diameter of which is smaller than the diameter of the overflow pipes, allows you to divide the entire fluid flow into several flows , the number of which is equal to the number of swirlers and overflow pipes. Thus, the vapor stream is in contact on each swirl with a much smaller amount of liquid compared to the prototype, which allows to increase the overall productivity of the contact element in liquid several times. Since the range of stable operation of each of the swirls with a decrease in fluid load increases, the proposed design allows you to expand the range of stable operation of the contact element. The magnitude of the fluid flow as it moves down decreases due to the partial drainage of fluid on each additional swirl, which allows each subsequent overflow pipe to be made with a smaller diameter compared to the overlying one. Moreover, in order to reduce the metal consumption of the structure, each downstream separation shell can also be made with a smaller diameter without reducing the cross section for the passage of steam flow in the annular section between the separation shell and the overflow pipe.

The authors:

Applicant-patent holder LLC NPK "Cedar-89

Yu.N. Lebedev Nill V.G. Chekmenev (

Claims (3)

1. A contact element for heat and mass transfer apparatus, comprising a swirl, a separation shell coaxially arranged relative to it, provided with an annular separator, and made with slots, an overflow pipe with a reflector located centrally inside the shell, characterized in that the separation shell and overflow pipe are made coaxially shells located at a distance from each other, while the contact element is provided with additional swirlers, each of which is installed between coaxially located both gulls, and is made with a Central hole, the diameter of which is less than the diameter of the overflow pipe.  2. The contact element for heat and mass transfer apparatus according to claim 1, characterized in that each downstream shell and overflow pipe are made with a smaller diameter. 3. The contact element for heat and mass transfer apparatus according to claims 1 and 2, characterized in that the slots are made on the upper coaxially located separation shell.