RU90698U1 - CONTACT PLATE OF MASS EXCHANGE COLUMN - Google Patents

Abstract

1. The contact plate of the mass transfer column, comprising a web with mass transfer elements and adjacent receiving and drain pockets, separated from it by distribution and overflow bars respectively, characterized in that inclined plates are installed on the overflow bar along its entire length adjacent to the other side the body of the mass transfer columns, which are made buried in the drain pocket relative to the plate and / or protruding relative to the plate. ! 2. The contact plate of the mass transfer column according to claim 1, characterized in that the plate plate in front of the overflow bar is made blind at a distance corresponding to 0.5-3.0 height of the overflow bar. ! 3. The contact plate of the mass transfer column according to claim 1, characterized in that the inclined plates are buried in the drain pocket relative to the plate blade and / or protrude relative to the plate plate at a distance of 0.5 to 5 overflow heights.

Description

The utility model relates to the design of contact devices for absorption disk, distillation and other heat and mass transfer apparatus with cap, valve, sieve, inkjet, grooved, s-shaped plates and their varieties equipped with overflow devices, and can be used in gas, oil, petrochemical and other industries.

It is known the use of various types of contact devices with overflow pockets in mass transfer devices - cap, valve, sieve and others. Thus, a cap bubbler plate is known containing a sheet with cap contact devices and adjacent pockets for receiving and draining liquid, separated from the sheet by distribution and overflow bars. (A.I.Skoblo, Yu.K. Molokanov and others. “Processes and Apparatuses for Oil and Gas Processing and Petrochemistry”, M., Nedra, 2000, p. 227-229)

Common features with the claimed utility model are a web with mass transfer elements and adjacent receiving and drain pockets, separated from it by distribution and overflow bars, respectively.

With this design, a stream of non-carbonated liquid is poured into the receiving pocket, which at high liquid loads causes intense foaming, an increase in the liquid level in the receiving pocket above the overflow bar. This reduces the efficiency and reliability of the plate and can lead to flooding of the column.

To reduce the foaming of the liquid in the receiving pocket, foam breakers are used. So, the contact plate is known, adopted for the prototype, consisting of a contact sheet with mass transfer elements in the form of perforations with adjacent receiving and drain pockets, separated from it by distribution and overflow bars, respectively. The overflow device of this plate contains a foam damper made of permeable material that overlaps the inlet section of the overflow device casing, and there is a space for foam destruction between the wall of this casing and the surface of the foam damper facing the incoming stream, and the upper edge is located above the level of the gas-liquid mixture on the plate, and in the area of the upper part of the defoamer there is a free passage for the exit of gas.

Common features with the claimed utility model are a web with mass transfer elements and adjacent receiving and drain pockets, separated from it by distribution and overflow bars, respectively.

The disadvantage of this solution is the design complexity and the need for periodic cleaning of the defoamer due to contamination and gradual clogging of its cellular or slot structure, which is associated with the need to stop production, which reduces the reliability of the contact plate, especially at high fluid loads and when working with contaminated media .

The technical task of the utility model is to increase fluid productivity and ensure uninterrupted operation of the contact plate.

The solution to the technical problem is achieved by the fact that in the contact plate of the mass transfer column containing a sheet with mass transfer elements and adjacent receiving and drain pockets, separated from it by distribution and overflow bars, inclined plates are installed on the overflow bar along its entire length adjacent to the other side to the body of the mass transfer columns, which are recessed and / or protrude relative to the plate web.

In addition, the plate cloth in front of the overflow bar is made deaf at a distance corresponding to 0.5-3.0 height of the overflow bar.

Also, the inclined plates protrude and / or are recessed relative to the plate cloth at a distance of 0.5 to 5 overflow heights.

The installation on the overflow bar along its entire length of inclined plates adjacent to the body of the mass transfer column on the other hand allows gas-liquid flow coming from the plate plate through the overflow bar to the receiving pocket, on the surface of the inclined plates, to stabilize the flow of fluid and evenly distribute it across the entire volume of the receiving pocket. This reduces foaming in the receiving pocket, increases the efficiency and productivity of the contact plate in liquid. Moreover, since inclined plates do not completely overlap the inlet section of the receiving pocket; they do not impede the release of gas that separates in the pocket. Those. separate flow of gas and liquid is provided: gas - under the plate, liquid - along the plate. Due to the inclination of the plates, the mud inclusions present in the flow do not linger on the plates, but are washed off by the fluid flow, i.e. the plates are self-cleaning, which ensures the uninterrupted operation of the plate and, accordingly, the mass transfer column.

The deepening of the inclined plates relative to the plate cloth allows you to reduce the height of the drop in the fluid flow entering the drain pocket, which also reduces foaming in it. The implementation of the plates protruding above the level of the plate plate with a high foam height on the contact sheet allows to increase the degassing area and the liquid path on the plates, which also reduces foaming in the drain pocket.

The execution of the plate cloth in front of the overflow bar is deaf, i.e. having no mass transfer elements, at a distance corresponding to 0.5-3.0 of the height of the overflow bar, it allows partial degassing of the liquid before it enters the inclined plates, which further increases the liquid capacity of the mass transfer column plate.

The implementation of inclined plates protruding and / or recessed relative to the plate cloth at a distance of 0.5 to 5 of the height of the overflow bar allows you to effectively implement the above design without significantly increasing the metal consumption of the mass transfer apparatus. The foaming in the overflow pocket is reduced and its productivity is increased.

The figure shows a sketch of a contact plate mounted in a mass transfer column.

The contact plate of the mass transfer column contains a sheet 1 with mass transfer elements 2 and adjacent receiving 3 and drain 4 pockets, separated from it by distribution 5 and overflow 6 straps, respectively. On the overflow bar 6 along its entire length inclined plates 7 are installed, which are adjacent on the other hand to the body of the mass transfer column 8. In this case, the plates 7 occupy the entire space between the overflow bar and the casing 1 of the column, overlapping the inlet section of the drain pocket 4. The plates 7 can also located above the canvas 2 plates in the blind part. The canvas 1 plate in front of the overflow bar can be made deaf at a distance corresponding to 0.5-3.0 height of the overflow bar. Inclined plates located in the drain pocket 4, protrude and / or recessed relative to the plate cloth at a distance of 0.5 to 5 of the height of the overflow bar. Moreover, the height of the plates above the level of the blade, as well as their depth, is selected depending on the properties of the medium and the hydrodynamic characteristics of the contact sheet.

The contact plate works as follows. The liquid coming from the contact plate 1 of the plate, overflowing over the overflow plate 6, enters the inclined plates 7, flowing down into which into the receiving pocket 4, is degassed, distributed along the entire length of the plates and, therefore, throughout the inlet section of the receiving pocket, the liquid flow stabilizes. At the same time, foaming in the receiving pocket is minimized, thereby increasing the performance of the contact plate in the liquid and ensuring its smooth and efficient operation, which expands the range of stable and efficient operation of the mass transfer column as a whole.

Claims (3)

1. The contact plate of the mass transfer column, comprising a web with mass transfer elements and adjacent receiving and drain pockets, separated from it by distribution and overflow bars respectively, characterized in that inclined plates are installed on the overflow bar along its entire length adjacent to the other side the body of the mass transfer columns, which are made buried in the drain pocket relative to the plate and / or protruding relative to the plate. 2. The contact plate of the mass transfer column according to claim 1, characterized in that the plate plate in front of the overflow bar is made blind at a distance corresponding to 0.5-3.0 height of the overflow bar. 3. The contact plate of the mass transfer column according to claim 1, characterized in that the inclined plates are recessed into the drain pocket relative to the plate blade and / or protrude relative to the plate plate to a distance of 0.5 to 5 of the height of the overflow bar.