CN118142486A - Turbulent flow type gas-liquid contact element - Google Patents

Abstract

The application provides a turbulent flow type gas-liquid contact element, which comprises a filler single plate layer, wherein a plurality of channel units are arranged on the filler single plate layer, the channel units are arranged in a honeycomb manner, the channel units comprise a plurality of channel holes, convex turbulent flow pieces are arranged on the channel holes, gaps are arranged between the convex turbulent flow pieces and the channel holes, a filler single plate layer is arranged at the upper part and/or the lower part of the filler single plate layer, a plurality of rows of plate holes are arranged on the filler single plate layer, a first convex turbulent flow piece is arranged on the plate holes, gaps are arranged between the first convex turbulent flow pieces and the plate holes, the center of each plate hole corresponds to the center of one channel unit, the plate holes are tangent with the circumscribed circles of the channel holes or the channel holes, the circumscribed circles of the plate holes are tangent with the channel holes, and the circumscribed circles of the plate holes are tangent with the channel holes; according to the application, the filler single plates and the filler sandwich plates are mutually stacked, after the multi-layer stacking is adopted, a plurality of irregular fluid channels can be formed in the filler, and a stronger turbulent flow effect is formed on materials, so that the vapor-liquid mass transfer effect is enhanced, and the separation efficiency is remarkably improved.

Description

Turbulent flow type gas-liquid contact element

Technical Field

The application relates to the technical field of chemical equipment, in particular to a turbulent flow type gas-liquid contact element.

Background

In chemical industry, the packing refers to inert solid materials such as pall rings and raschig rings which are installed in a packing tower and are used for increasing gas-liquid contact surfaces so as to enhance gas-liquid mass transfer effects, and the packing is mainly divided into regular packing and random packing, which have been widely used in fields of petrochemical industry, fertilizer industry, natural gas purification, air separation and the like after more than 100 years of development since the end of 19 th century.

The structured packing is arranged in a tower according to uniform geometric figures, and orderly piled up, and has the advantages of large specific surface area, small pressure drop, uniform fluid dispersion, high mass and heat transfer efficiency and the like, so that the structured packing is widely applied, the earliest developed is a metal structured packing, and the orderly developed structured packing is a plastic structured packing, a ceramic structured packing and a carbon fiber structured packing; at present, most of typical structured packing is metal plate corrugated structured packing, when the structured packing is used for gas-liquid mass transfer operations such as rectification or absorption, gas-liquid two phases in the packing are generally in countercurrent contact mass transfer or heat transfer, liquid phases flow downwards in a membranous shape along the surface of the packing, most of liquid flows along the trough of a packing sheet when the liquid film flows, namely, the liquid film of the trough of the surface of the packing is thicker, the liquid film of the crest and other surfaces are poorer in coverage, and when the wettability of the packing to the liquid is poorer, part of the surface of the packing possibly has no liquid coverage, so that the gas-liquid mass transfer area is reduced, and the mass transfer effect is poorer; in addition, when the liquid film flows along the surface of the filler, the liquid film generally flows in a laminar flow state, and the surface of the liquid film in a laminar flow state is worse to update, so that the gas-liquid mass transfer efficiency is affected.

The random packing is mainly packed, and is a particle body with a certain shape, but the random packing cannot be made into a model with a large specific surface area due to the limitation of a three-dimensional space, so that wall flow is easy to generate, the liquid holdup is too large, liquid accumulation is easy to form in the packing layer, and the defects of bias flow, channeling, large flow and the like of liquid are caused.

Therefore, how to improve the mass transfer efficiency of the structured packing by changing the microscopic flow state of the liquid film and also consider the liquid level update speed of random packing is a technical problem to be solved urgently.

The applicant has searched prior art prior to writing, resulting in the following approaching prior art:

Prior art 1: the Chinese patent application number is: the large-flow circular arc filler of CN03219680.6 is used for being arranged in a chemical distillation tower to increase the vapor-liquid treatment capacity; the corrugated section of the filler is mainly adopted to be made into a semicircular arc shape, the end face of the filler is made into a straight passage, and the corrugations are arranged in an S shape; the invention has compact and reasonable structure; the triangle included angle is removed to be arc on the basis of the original corrugated filler, the dead angle of liquid stagnation at the sharp corner is changed into a common liquid film channel, the channel direction is changed, and the retention belt is subtracted; the F factor is improved, the flooding point is improved, and the gas resistance is reduced; the flux of liquid is increased, the contact surface of gas and liquid is increased, and the separation efficiency is improved, so that the vapor and liquid treatment capacity of the distillation tower is increased in the same tower diameter.

Prior art 2: the Chinese application number is: the honeycomb protection filler comprises a cylindrical filler body, seven round through holes are formed in the filler body, the seven through holes are divided into an upper row, a middle row and a lower row, the upper row and the lower row are respectively two through holes, the middle row is respectively provided with three through holes, the inside of each through hole is respectively provided with a first filling block with a regular hexagon-shaped outer side wall, the height of each first filling block is the same as that of the through hole, the corners of the outer side wall of each first filling block are respectively connected with the inner wall of the through hole through first connecting ribs, a regular hexagon-shaped cavity is respectively arranged in each first filling block, annular second filling blocks are respectively filled in each cavity, the height of each second filling block is the same as that of the cavity, and the corners of the inner side wall of each first filling block are respectively connected with the outer wall of the second filling block through second connecting ribs; the invention can improve the heat exchange effect of the filler.

The packing is innovated in the technical scheme, so that the heat exchange effect of the packing can be improved, but the technical scheme is structured packing, so that the liquid level updating speed of random packing cannot be considered, and the following defects mainly exist:

1. The structured packing has poor liquid turbulence effect and low liquid phase surface update rate; the updating speed of the structured packing liquid film is low, the gas-liquid turbulence performance is poor, the film thickness is larger at the trough position, and no transverse mass transfer exists;

2. the conventional structured packing has a single structural form, and when the tower diameter is increased, uneven vapor-liquid distribution, poor contact and the like can be caused, so that the efficiency is reduced, namely the amplification effect is realized;

in summary, there is a need to provide a new solution to solve the above-mentioned problems because of the lack of gas-liquid contact elements that combine the advantages of structured packing and random packing in the prior art.

Disclosure of Invention

The application provides a turbulent flow type gas-liquid contact element, which comprises a filler single plate layer, wherein a plurality of channel units are arranged on the filler single plate layer, the channel units are in honeycomb arrangement, each channel unit comprises a plurality of channel holes, a convex turbulent flow piece is arranged on each channel hole, gaps are arranged between the convex turbulent flow pieces and the channel holes, a filler baffle layer is arranged on the upper part and/or the lower part of the filler single plate layer, a plurality of rows of plate holes are arranged on the filler baffle layer, a first convex turbulent flow piece is arranged on each plate hole, gaps are arranged between the first convex turbulent flow piece and each plate hole, the center of each plate hole corresponds to the center of one channel unit, and the plate holes and the channel holes are in any position relation: the plate hole is tangent to the channel hole, or the plate hole is tangent to the circumscribed circle of the channel hole, or the circumscribed circle of the plate hole is tangent to the channel hole.

As a preferable scheme, the channel unit comprises at least two channel holes, and the center distance of the channel unit from the center of each channel hole is equal; wherein, the protruding spoiler on the adjacent passage hole sets up the upper portion and the lower part of passage hole respectively, or sets up the lower part and the upper portion at the passage hole respectively.

As a preferred solution, the raised turbulators on two adjacent rows of plate holes are provided on the upper and lower portions of the plate holes, respectively, or on the lower and upper portions of the passage holes, respectively.

As a preferred solution, the filler veneer layer is a corrugated plate.

As a preferable scheme, the upper surface or/and the lower surface of the filler single-plate layer is provided with rugged grains.

As a preferable scheme, the filler clamping plate layer is a wave plate.

As a preferable scheme, the upper surface or/and the lower surface of the filling sandwich layer is provided with rugged grains.

As a preferred embodiment, the passage holes are regular or irregular, and the plate holes are regular or irregular.

As a preferable scheme, the channel holes or/and the plate holes adopt a clover shape in a regular shape, the clover shape comprises three semicircles, and adjacent semicircles are connected through transition circular arcs.

As a preferred solution, the raised spoiler and/or the raised spoiler take the shape of an arc-shaped clover.

The application has the following advantages:

(1) The application has simple processing and reduced manufacturing cost, and can obviously improve the manufacturing efficiency through single stamping forming;

(2) The invention adopts a novel structure, and has the characteristics of large specific surface area, large porosity, pressure reduction, uniform distribution of fluid on the surface of the mass transfer element and good redistribution performance;

(3) According to the application, the filler single plates and the filler sandwich plates are mutually stacked, after the multi-layer stacking is carried out, a plurality of irregular fluid channels can be formed in the filler, and a stronger turbulent flow effect is formed on materials, so that the vapor-liquid mass transfer effect is enhanced, and the separation efficiency is obviously improved; namely, an irregular fluid channel is realized by adopting regular fillers, so that a stronger turbulence effect is formed;

(4) The channel units are arranged in a honeycomb mode and stacked by the filler single plates and the filler sandwich plates, so that the structure is more stable, the filler breakage can be reduced in production, and the service life can be prolonged.

Drawings

FIG. 1 is a schematic plan view of a filler veneer layer of the present application;

FIG. 2 is a schematic plan view of a filler clip layer of the present application;

FIG. 3 is a schematic plan view of a multi-layer stack of the present application;

FIG. 4 is a schematic view of the structure of the filler veneer layer of the present application at an angle one;

FIG. 5 is a schematic view of the structure of the filler veneer layer of the present application at an angle two;

FIG. 6 is a schematic view of the structure of the angle one of the filler clip layer of the present application;

FIG. 7 is a schematic view of a second angle of the filler clip layer of the present application;

FIG. 8 is a front view of the multi-layer stack of the present application;

FIG. 9 is a right side view of the multi-layer stack of the present application;

FIG. 10 is a schematic illustration of a plate hole in a third embodiment of the application;

FIG. 11 is a schematic view of the configuration of the channel unit in cooperation with the plate holes;

FIG. 12 is a schematic view of the structure of the filler veneer layer of the present application as a corrugated plate;

FIG. 13 is a schematic view of the structure of the filler veneer layer of the present application with rugged texture;

1. filler veneer layer 2, channel unit 3, channel hole 4, filler veneer layer

5. Plate hole 6, channel unit center 7, raised spoiler 8, gap

9. The convex turbulence piece I10, the semicircle 11, the transitional arc 12 and the passage hole I

13. Channel hole two 14, channel hole three 15, channel hole four 16, and channel hole five

17. And a passage hole six.

Detailed Description

The following describes the embodiments of the present invention in detail with reference to fig. 1 to 11. It should be noted that the detailed description herein is presented for purposes of illustration and explanation only and is not intended to limit the invention.

Embodiment one:

The application provides a turbulent flow type gas-liquid contact element, which comprises a filler single plate layer 1, wherein a plurality of channel units 2 are arranged on the filler single plate layer 1, the channel units 2 are arranged in a honeycomb mode, the channel units 2 comprise a plurality of channel holes 3, a filler clamping plate layer 4 is arranged at the upper part and/or the lower part of the filler single plate layer 1, a plurality of rows of plate holes 5 are arranged on the filler clamping plate layer 4, the center of each plate hole 5 corresponds to the center 6 of one channel unit, namely, the center of each plate hole 5 coincides with the center 6 of the channel unit, and the plate holes 5 are tangential with the channel holes 3 or the circumscribed circles of the channel holes 3; when the plate hole 5 and the channel hole 3 are round in a regular shape, the plate hole 5 is tangent to the channel hole 3; the plate holes 5 are round in regular shape, the channel holes 3 are square, triangular, diamond-shaped, oval, heart-shaped, rectangular and the like in regular shape, or irregular shapes and the like, the plate holes 5 are tangent to the circumscribed circle of the channel holes 3, the filler veneer layers 1 and the filler veneer layers 4 are stacked, and the stability of connection is improved through spot welding and the like.

Specifically, the channel unit 2 includes at least two channel holes 3, the center 6 of the channel unit is equidistant from the center of each channel hole, that is, the center of the channel unit is taken as the center of a circle, the distance between the center 6 of the channel unit and the center of the channel hole 3 is taken as the radius, the centers of all the channel holes 3 are on the circular boundary, the channel holes 3 are provided with convex turbulence pieces 7, gaps 8 are arranged between the convex turbulence pieces 7 and the channel holes 3, the shape of the convex turbulence pieces 7 is not limited, such as triangle, ellipse, rectangle, clover and the like in a regular shape, irregular shape can be adopted, arc shape can be adopted, such as convex turbulence pieces 7 in fig. 4, 5, 8 and 9, non-arc shape can be adopted, such as a vertical plate is installed at the periphery of the channel hole 3, the top of the vertical plate is provided with triangle, ellipse, rectangle and clover-shaped convex turbulence pieces 7, and gaps 8 are arranged between the convex turbulence pieces 7 and the channel hole 3; the protruding turbulence pieces 7 on the adjacent channel holes 3 are respectively arranged at the upper part and the lower part of the channel holes 3, or are respectively arranged at the lower part and the upper part of the channel holes 3, that is, the protruding turbulence pieces 7 are distributed at intervals up and down on the filler single board layer 1 at the positions corresponding to the channel holes 3, the protruding turbulence pieces 7 and the filler single board layer 4 are connected in a welding, bonding and other modes, and can be formed in an integral stamping forming mode, the specific mode is not limited, and a technician can select according to specific conditions.

Specifically: the plate holes 5 are provided with first protruding turbulence pieces 9, and gaps 8 are formed between the first protruding turbulence pieces 9 and the plate holes 5, wherein the first protruding turbulence pieces 9 on two rows of adjacent plate holes 5 are respectively arranged at the upper part and the lower part of the plate holes 5 or respectively arranged at the lower part and the upper part of the plate holes 5; namely, the first protruding turbulence pieces 9 of two adjacent rows are distributed alternately up and down on the plate holes 5, namely, the first protruding turbulence pieces 9 are distributed alternately up and down on the upper surface and the lower surface of the filler clamping plate layer 4, the shape of the first protruding turbulence pieces 9 is the same as that of the first protruding turbulence pieces 7, which are not described in detail herein, and are preferably consistent with that of the first protruding turbulence pieces 7, if the first protruding turbulence pieces 7 adopt an arc triangle, the first protruding turbulence pieces 9 also adopt an arc triangle; the first protruding spoiler 9 and the filler clamping plate layer 4 are connected through welding, bonding and other modes, and can be formed in an integral stamping forming mode, the specific form is not limited, and a technician can select according to specific conditions.

Embodiment two:

The first difference between this embodiment and the second embodiment is that the circumscribed circle of the plate hole 5 is tangent to the channel hole 3;

Specifically, the channel hole 3 is a circular hole with a regular shape, the plate hole 5 is a square, triangle, diamond, ellipse, heart, rectangle, etc. with a regular shape, or other irregular shapes, etc., and the channel hole 3 is tangent to the circumscribed circle of the plate hole 5.

Embodiment III:

The present embodiment differs from the above embodiment in that in the present embodiment, the circumscribed circle of the plate hole 5 is tangent to the circumscribed circle of the passage hole 3; in the embodiment, the plate holes 5 and the channel holes 3 are not round holes, and are square, triangle, diamond, ellipse, heart, rectangle and the like with regular shapes, and irregular shapes and the like can be adopted;

In this embodiment, the plate hole 5 and the channel hole 3 take clover shape as an example, the plate hole 5 includes three semicircles 10, adjacent semicircles 10 are connected through a transition arc 11, the channel hole 3 is identical to the plate hole 5 in shape, and details are not repeated here; the shape of the convex spoiler 7 and the convex spoiler 9 is also preferably clover-shaped;

The channel unit comprises six channel holes 3, the distances between the six channel holes 3 and the center 6 of the channel unit are equal, the channel holes 3 are respectively a channel hole I12, a channel hole II 13, a channel hole III 14, a channel hole IV 15, a channel hole IV 16, a channel hole VI 17, and the arrangement mode is shown in figure 11, and one semicircle 10 in the channel hole I12, the channel hole II 13, the channel hole III 14, the channel hole IV 15, the channel hole IV 16 and the channel hole VI 17 is respectively pointed to the center 6 of the channel unit; the upper parts of the first channel hole 12, the third channel hole 14 and the fifth channel hole 16 are provided with raised turbulence pieces 7, the lower parts of the second channel hole 13, the fourth channel hole 15 and the sixth channel hole 17 are provided with raised turbulence pieces 7, and gaps 8 are arranged between the raised turbulence pieces 7 and the channels 3.

The plate holes 5 are provided with first protruding turbulence pieces 9, and gaps are formed between the first protruding turbulence pieces 9 and the plate holes 5, wherein the first protruding turbulence pieces 9 on two rows of adjacent plate holes 5 are respectively arranged at the upper part and the lower part of the plate holes or respectively arranged at the lower part and the upper part of the plate holes 5; if 9 rows of plate holes are arranged, the first 1, 3, 5, 7 and 9 raised turbulators 9 are arranged on the upper part of the plate hole 5, and the first 2, 4, 5 and 8 raised turbulators 9 are arranged on the lower part of the plate hole 5; or the first raised turbulence pieces 9 of the 1 st, 3 rd, 5 th, 7 th and 9 th rows are arranged at the lower part of the plate hole 5, and the first raised turbulence pieces 9 of the 2 nd, 4 th, 5 th and 8 th rows are arranged at the upper part of the plate hole 5; when the packing veneer layer 1 and the packing veneer layer 4 are stacked and placed, the centers of the plate holes 5 are overlapped with the channel unit centers 6, so that regular placement is realized, a plurality of irregular fluid channels are formed, and a stronger turbulence effect is formed on materials, so that the vapor-liquid mass transfer effect is enhanced, the separation efficiency is remarkably improved, the advantages of regular packing and random packing are integrated, and the defects of the regular packing and the random packing are overcome.

In the embodiment, the diameter of the circumscribed circle of the channel hole 3 and the plate hole 5 is 25mm, the peak heights of the convex spoiler 7 and the convex spoiler 9 are 4mm, the specific surface area can reach 500m ²/m³ through experimental calculation, the porosity can reach 96.25%, and compared with the conventional 500Y-type packing, the porosity is improved by more than 4 percent, so that the application has lower pressure drop and flux, and can achieve better separation effect.

Embodiment four:

The embodiment further improves the vapor-liquid contact effect, and specifically comprises the following steps:

The wave plate is adopted by the filler veneer layer 1 and the filler veneer layer 4, the wave height is needed to be considered when the wave plate is adopted, the influence of overhigh height on the perforating effect is avoided, and the technical personnel can select according to specific conditions.

Alternatively, the upper surface or/and the lower surface of the filler single-plate layer 1 is provided with uneven grains; the upper surface or/and the lower surface of the filler clamping plate layer 4 is/are provided with rugged grains; the cross-sectional shape of the rugged lines can be rectangular, triangular, trapezoidal, semicircular, irregular and the like, and a technician can select the rugged lines according to specific conditions.

In this embodiment, the following technical effects can be achieved by setting the filler veneer layer 1 and the filler veneer layer 4:

The gas-liquid contact effect of the surfaces of the filler and the single plate layer 1 and the filler and the single plate layer 4 can be enhanced while the gas-liquid contact effect of the surfaces of the filler and the single plate layer can be enhanced, and the irregular dispersion effect on materials can be achieved to a certain extent;

the wavy filler single plate layer 1 and the filler clamping plate layer 4, and the filler single plate layer 1 and the filler clamping plate layer 4 with the rugged lines can avoid forming a phase liquid film on the plate surface, so that the vapor-liquid mass transfer effect is further improved;

In summary, due to the adoption of the technical scheme, the application has the following advantages:

(1) The application has simple processing and reduced manufacturing cost, and can obviously improve the manufacturing efficiency through single stamping forming;

(2) The invention adopts a novel structure, and has the characteristics of large specific surface area, large porosity, pressure reduction, uniform distribution of fluid on the surface of the mass transfer element and good redistribution performance;

(3) According to the application, the filler single plates and the filler sandwich plates are mutually stacked, after the multi-layer stacking is carried out, a plurality of irregular fluid channels can be formed in the filler, and a stronger turbulent flow effect is formed on materials, so that the vapor-liquid mass transfer effect is enhanced, and the separation efficiency is greatly improved; namely, an irregular fluid channel is realized by adopting regular fillers, so that a stronger turbulence effect is formed;

(4) The channel units are arranged in a honeycomb mode and stacked by the filler single plates and the filler sandwich plates, so that the structure is more stable, the breakage of the filler can be reduced in production, and the service life can be prolonged;

the above devices, connection relationships, etc. which are not specifically described belong to the prior art, and the present invention is not specifically described herein.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and various possible combinations of the present application are not described separately in order to avoid unnecessary repetition, unless otherwise contradicted.

Moreover, any combination of the various embodiments of the application can be made without departing from the spirit of the application, and the application is also to be regarded as the disclosure of the application.

Claims (10)

1. The utility model provides a vortex formula gas-liquid contact element, its characterized in that, including packing veneer layer (1), a plurality of passageway unit (2) have been seted up on packing veneer layer (1), passageway unit (2) are the honeycomb and arrange, passageway unit (2) include a plurality of passage hole (3), be equipped with protruding vortex piece (7) on passage hole (3), be equipped with clearance (8) between protruding vortex piece (7) and passage hole (3), upper portion and/or lower part of packing veneer layer (1) are equipped with packing veneer layer (4), are equipped with multirow plate hole (5) on packing veneer layer (4), be equipped with protruding vortex piece one (9) on plate hole (5), be equipped with clearance (8) between protruding vortex piece one (9) and the plate hole (5), the center of every plate hole (5) corresponds a passageway unit center (6), and plate hole (5) are following arbitrary positional relationship with passage hole (3): the plate hole (5) is tangent to the channel hole (3), or the plate hole (5) is tangent to the circumscribed circle of the channel hole (3), or the circumscribed circle of the plate hole (5) is tangent to the channel hole (3).

2. A turbulence type gas-liquid contact element according to claim 1, characterized in that the channel unit (2) comprises at least two channel holes (3), the channel unit center (6) being equidistant from the center of each channel hole (3); wherein, the protruding spoilers (7) on the adjacent passage holes (3) are respectively arranged at the upper part and the lower part of the passage holes (3) or respectively arranged at the lower part and the upper part of the passage holes (3).

3. A turbulence generating gas-liquid contacting element as claimed in claim 1, characterized in that the raised turbulence generating elements (9) on two adjacent rows of plate holes (5) are arranged in the upper and lower parts of the plate holes (5) or in the lower and upper parts of the plate holes (5), respectively.

4. A turbulent flow type gas-liquid contact element according to claim 1, characterized in that the filler veneer layer (1) is a wave plate.

5. A turbulence type gas-liquid contact element as claimed in claim 1, characterized in that the upper surface or/and the lower surface of the filler veneer layer (1) is provided with rugged texture.

6. A turbulent flow type gas-liquid contact element according to claim 1, characterized in that the filler clamping plate layer (4) is a wave plate.

7. A turbulence type gas-liquid contact element as claimed in claim 1, characterized in that the upper surface or/and the lower surface of the filler clamping plate layer (4) is provided with rugged texture.

8. A turbulence type gas-liquid contact member according to claim 1, characterized in that the passage hole (3) is of a regular shape or an irregular shape, and the plate hole (5) is of a regular shape or an irregular shape.

9. A turbulence type gas-liquid contact element as claimed in claim 8, characterized in that the passage hole (3) or/and the plate hole (5) adopts a clover shape in a regular shape, the clover shape comprises three semicircles (10), and adjacent semicircles (10) are connected through a transition arc (11).

10. A turbulence generating gas-liquid contacting element as claimed in any one of claims 1 to 9, characterized in that the raised turbulence element (7) and/or the raised turbulence element one (9) take the shape of an arc of clover.