Novel composite three-dimensional mass transfer tower tray

Abstract

The utility model provides a novel composite three-dimensional mass transfer tower tray which comprises a tower plate, a plurality of cap cover plate holes are formed in the tower plate, a cap cover is installed on the upper portions of the cap cover plate holes, the cap cover comprises a cap cover body, air holes are formed in the two sides of the cap cover body, a top plate is arranged on the upper portion of the cap cover body, and the top plate is connected with the top of the cap cover body. Side plates perpendicular to the top plate are arranged on the two sides of the top plate, first air holes are formed in the side plates, baffles are arranged on the other two sides of the top plate, and a plurality of screen holes are formed in the positions, corresponding to the baffles, of the tower plate; according to the invention, the baffle and the sieve pores are arranged, so that liquid foam sprayed from the sieve pores can be shielded, entrainment at the sieve pores is reduced, the operation upper limit of the tray is improved, the mass transfer efficiency is improved, the advantages of the sieve-plate tray and the three-dimensional mass transfer tray are integrated, and the defects of low mass transfer efficiency under low operation load and high operation load of the sieve-plate tray and the three-dimensional mass transfer tray are overcome; and the tower has higher operation flexibility.

Description

Technical Field

[0001] The present application relates to the technical field of chemical equipment, and in particular to a novel composite three-dimensional mass transfer tower tray. Background Art

[0002] Tower equipment is an important unit operation equipment in chemical, oil refining, food, medicine and environmental protection sectors. Tower equipment enables the gas phase and liquid phase to fully contact to achieve the purpose of mass transfer and heat transfer between the phases. Towers have always played a vital role in the chemical industry. As an important component of towers, the structure of tower trays determines the mass transfer and separation effects of the tower, and also determines the size of equipment investment. Therefore, people have been committed to improving the form and structure of tower trays in order to obtain more efficient and excellent tower trays.

[0003] The existing unit structures of tray mass transfer mainly include: sieve tray, bubble tray, float valve tray and various flow trays, each of which has its own applicable fields; the sieve tray has a simple structure, but has low operational flexibility, and has low mass transfer efficiency for processes with a large liquid-gas ratio; the bubble tray has high operational flexibility, and the tray is not easy to be blocked, but has a complex structure, high cost, low production capacity and plate efficiency, and because the tooth gap opening is fixed, the adaptability to changes in steam load is poor, and when the gas velocity is low, the gas-liquid contact is poor, and when the gas velocity is high, it is easy for steam to blow away the liquid; the float valve tray has greater operational flexibility, can better adapt to changes in feed volume, has better gas-liquid agitation, less mist entrainment, long contact time, and good mass transfer effect, but the steam is ejected along the periphery of the rising steam pore, and there is still reverse mixing of the liquid, which will reduce the mass transfer efficiency. In addition, the valve plate is easily stuck, rusted or stuck, affecting the opening, and is not suitable for systems with high viscosity and easy clogging.

[0004] In order to solve the technical problems existing in the tower plate in the prior art, a technical solution is disclosed in a novel mass transfer tower plate with application number: CN202223001054.9, including a tower plate, a plurality of caps are evenly arranged on the tower plate, and a plurality of sieve holes are evenly arranged on the lower part of the caps on the tower plate; the caps include a cap body, a top plate is provided on the upper part of the cap body, the top plate is connected to the top of the cap body, side plates perpendicular to the top plate are provided on both sides of the top plate, and air holes 1 are opened on the side plates; the cap body includes a symmetrically arranged mounting plate 1 and mounting plate 2, and the mounting plate 1 and mounting plate 2 are symmetrically arranged. There are mounting plates three and four, and air holes two are provided on mounting plates one and two; the heights of mounting plates one and two are smaller than those of mounting plates three and four, and air inlet passages are formed between mounting plates one and three, four, and between mounting plates two and three, four; side plates are respectively arranged on one side of mounting plate one and two; in this application, bubbling is carried out between the cap and the liquid flowing on the tower plate to realize gas-liquid contact mass transfer, and the setting of the sieve holes strengthens the gas-liquid mass transfer and ensures gas-liquid separation; however, this scheme has more mist entrainment under high operating load, and the mass transfer efficiency is low; the pressure drop is also high.

[0005] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0006] The present application provides a novel composite three-dimensional mass transfer tower plate, comprising a tower plate, wherein a plurality of cap cover plate holes are opened on the tower plate, a cap cover is installed on the upper part of the cap cover plate holes, the cap cover comprises a cap cover body, air holes are opened on both sides of the cap cover body, a top plate is provided on the upper part of the cap cover body, the top plate is connected to the top of the cap cover body, side plates perpendicular to the top plate are provided on both sides of the top plate, air holes are opened on the side plates, baffles are provided on the other two sides of the top plate, and a plurality of sieve holes are opened at positions on the tower plate corresponding to the baffles.

[0007] As a preferred solution, the ratio of the area of ​​the sieve holes to the area of ​​the cap plate holes is 0.1-1.5.

[0008] As a preferred solution, the baffle is projected onto the tower plate to cover all the sieve holes.

[0009] As a preferred solution, the shape of the sieve holes is at least one of circular, keyway-shaped, and rectangular.

[0010] As a preferred solution, the baffle is a single plate, and the single plate is connected to both sides of the top plate.

[0011] As a preferred solution, the cross-sectional shape of the single plate is one of square, semicircular, semi-elliptical, and irregular.

[0012] As a preferred solution, vertical boards perpendicular to the single board are provided on both sides of the single board.

[0013] As a preferred solution, a plurality of holes are provided on the vertical plate.

[0014] As a preferred embodiment, the cap cover body includes symmetrically arranged mounting plates 1 and 2, symmetrically arranged mounting plates 3 and 4 between the mounting plates 1 and 2, and air holes are provided on the mounting plates 1 and 2; the heights of the mounting plates 1 and 2 are smaller than those of the mounting plates 3 and 4, and air intake passages are formed between the mounting plates 1 and 3, and 4, and between the mounting plates 2 and 3, and 4; the side plates are respectively arranged on one side of the mounting plate 1 and the mounting plate 2.

[0015] As a preferred solution, the mounting plate 1 and the mounting plate 2 are rectangular, the mounting plate 3 and the mounting plate 4 are trapezoidal, and the trapezoidal upper bottoms of the mounting plate 3 and the mounting plate 4 are connected to the top plate.

[0016] This application has the following advantages:

[0017] 1. Provide a composite tray that combines the advantages of sieve trays and three-dimensional mass transfer trays, and overcomes their respective shortcomings of low mass transfer efficiency under low and high operating loads, so that the tower has greater operating flexibility;

[0018] 2. The present application is provided with baffles and sieve holes, which can shield the liquid foam ejected from the sieve holes, reduce the entrainment of mist foam at the sieve holes, increase the upper limit of the operation of the tower tray, and improve the mass transfer efficiency;

[0019] 3. The present application can increase the adjustment range of the tower plate by controlling the ratio of the sieve holes to the cap plate holes, thereby maximizing the operational flexibility of the tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure in which the single board of the present application is a square;

[0021] Figure 2 It is a schematic diagram of the structure of a C-shaped plate used in the baffle of the present application;

[0022] Figure 3 yes Figure 2 A schematic diagram of a structure in which a hole is opened on a C-shaped plate;

[0023] 1. Tray 2. Cap plate hole 3. Cap 4. Cap body

[0024] 5. Air hole 6. Top plate 7. Side plate 8. Air hole 1 9. Baffle

[0025] 10. Screen hole 11. Single board 12. Vertical board 13. Hole

[0026] 14. Mounting plate one 15. Mounting plate three 16. Mounting plate four 17. Air intake passage. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 — Figure 3 The specific implementation of the utility model is described in detail. It should be noted that the specific implementation described here is only used to illustrate and explain the utility model, and is not used to limit the utility model.

[0028] Embodiment 1:

[0029] The present embodiment provides a novel composite three-dimensional mass transfer tower plate, comprising a tower plate 1, wherein the tower plate 1 is provided with a plurality of cap plate holes 2, and a cap 3 is installed on the upper part of each cap plate hole 2, and the cap 3 is connected to the tower plate 1 by welding, bolt connection and other commonly used connection methods in the prior art, and the cap 3 comprises a cap cover body 4, and the cap cover body 4 is provided with air holes 5, and the air holes 5 can be in any shape such as round, square, keyway, irregular, etc., and gas is ejected from the air holes 5; a top plate 6 is provided on the upper part of the cap cover body 4, and the top plate 6 is preferably a rectangular plate, and the top plate 6 is connected to the top of the cap cover body 4 by welding and other methods, and side plates 7 perpendicular to the top plate 5 are provided on both sides of the top plate 5, and the side plates 7 and the top plate 6 are sealed and connected by welding, bonding and other methods, and can also be formed in an integrated manner, and an air hole 8 is provided on the side plate 7, and the air hole 8 can be in any shape such as round, square, keyway, irregular, etc. The gas is ejected from the air hole 8, and the two side plates 7 and the top plate 6 are inverted "U" shape. The setting of the top plate 6 and the side plates 7 can suppress the entrainment of mist and foam; baffles 9 are arranged on the other two sides of the top plate 6. Similarly, the baffles 9 and the top plate 6 are connected by welding or the like, and can also be formed in an integral manner. A plurality of sieve holes 10 are opened at positions corresponding to the baffles 9 on the tower plate 1. The size of the sieve holes 10 and the spacing between the sieve holes 10 are adjustable. The liquid foam ejected from the sieve holes 10 is blocked by the baffles 9, reducing the entrainment of mist and foam at the sieve holes 10, improving the upper limit of the operation of the tower plate 1, and improving the mass transfer efficiency; preferably, the ratio of the area of ​​the sieve holes 10 to the area of ​​the cap plate holes 2 is 0.1-1.5. By controlling the ratio of the sieve holes 10 to the cap plate holes 2, the adjustment range of the tower plate can be increased, and the operating flexibility of the tower plate can be increased to the maximum extent; more preferably, in order to further reduce the entrainment of mist and foam, the baffles 9 project onto the tower plate 1 to cover all the sieve holes 10.

[0030] The baffle 9 can be a single plate 11, which is connected to both sides of the top plate 6. The cross-sectional shape of the single plate 11 is one of square, semicircular, semi-elliptical, and irregular shapes, such as Figure 1 As shown, a square shape is adopted. When a square shape is adopted, the single board 11 and the top board 6 are in the same plane.

[0031] like Figure 2 , Figure 3 As shown, vertical plates 12 perpendicular to the single plate 11 are provided on both sides of the single plate 11. The single plate 11 and the vertical plates 12 are connected by welding or the like, and can also be formed in an integral manner. Under this structure, the cross-sectional shape of the baffle 9 is C-shaped; more preferably, a plurality of holes 13 are opened on the vertical plates 12.

[0032] The sieve hole 10 can be a straight hole perpendicular to the tower plate 1, or an inclined hole at a certain angle to the tower plate 1. The shape of the sieve hole 10 is at least one of circular, keyway, and rectangular, that is, it can be a single sieve hole 10 among circular, keyway, and rectangular, or it can be a combination of two or more.

[0033] Embodiment 2:

[0034] This embodiment describes the cap body 4, specifically:

[0035] The cap cover body 4 includes a symmetrically arranged mounting plate 14 and a mounting plate 2, wherein a mounting plate 3 15 and a mounting plate 4 16 are symmetrically arranged between the mounting plate 14 and the mounting plate 2, and the mounting plate 14 and the mounting plate 2 are of equal size, and the mounting plate 3 15 and the mounting plate 4 16 are of equal size; the mounting plate 14, the mounting plate 2, the mounting plate 3 15, and the mounting plate 4 16 are sealed and formed by bonding, welding, integral molding, etc., and the mounting plate 14 and the mounting plate 2 are provided with air holes 5, and the air holes 5 can be The gas is ejected from the air hole 5 in any shape such as round, square, keyway, irregular, etc.; the height of the mounting plate 1 14 and the mounting plate 2 is less than the height of the mounting plate 3 14 and the mounting plate 4 15, and an air inlet channel 17 is formed between the mounting plate 1 14 and the mounting plate 3 15 and the mounting plate 4 16, and between the mounting plate 2 and the mounting plate 3 15 and the mounting plate 4 16, and the gas enters the upper part of the tower plate 1 from the air inlet channel 17 to contact the liquid; the side plates 7 are respectively arranged on one side of the mounting plate 14 and the mounting plate 2.

[0036] As a preferred solution, in order to make the gas-liquid contact more uniform and the mass transfer effect better, the mounting plate 1 14 and the mounting plate 2 are rectangular, the mounting plate 3 15 and the mounting plate 4 16 are trapezoidal, and the trapezoidal upper bottoms of the mounting plate 3 15 and the mounting plate 4 16 are sealed and connected to the top plate 6. More preferably, the mounting plate 1 14, the mounting plate 2, the mounting plate 3 15, the mounting plate 4 16, the top plate 6, the side plate 7, and the baffle plate 9 are integrally formed.

[0037] The present application provides air holes 5 on both sides of the three-dimensional mass transfer cap. Under the same opening rate condition, the area of ​​the cap plate holes 2 under the three-dimensional mass transfer cap is reduced. When operating under low load conditions, the pressure drop of the gas through the air holes 5 is large, and the gas velocity through the air holes 5 is lower than that through the cap plate holes 2. The gas velocity through the cap plate holes 2 is higher than the average plate hole gas velocity of the tower plate. Since the gas velocity at the leakage point of the three-dimensional mass transfer tower plate is higher than that of the sieve hole tower plate, the average lower limit gas velocity of the tower plate leakage is reduced.

[0038] Embodiment three:

[0039] This embodiment provides a specific application scenario:

[0040] The width of the cap plate hole 2 on the tower plate 1 is 80mm and the length is 200mm; holes are opened symmetrically on both sides of the cap body 4, 8 holes are opened on one side, the hole diameter is 12mm, and the hole spacing is 30mm. Specifically, 8 air holes 5 with a hole diameter of 12mm and a hole spacing of 30mm are opened on the mounting plate 1 14 and the mounting plate 2 respectively; the baffle 9 adopts a C-shaped baffle with the same height as the top plate 6, and the width of the single plate 11 is 80mm and the length is 85mm. When the gas-liquid ratio is 200, compared with the three-dimensional tower plate without sieve holes 10 and baffles 9, the leakage phenomenon can be effectively reduced under low gas-liquid load, and the pressure drop of the tower plate is reduced by 10% under high gas-liquid load.

[0041] In summary, due to the adoption of the above technical solution, the present application has the following advantages:

[0042] 1. Provide a composite tray that combines the advantages of sieve trays and three-dimensional mass transfer trays, and overcomes their respective shortcomings of low mass transfer efficiency under low and high operating loads, so that the tower has greater operating flexibility;

[0043] 2. The present application is provided with baffles and sieve holes, which can shield the liquid foam ejected from the sieve holes, reduce the entrainment of mist foam at the sieve holes, increase the upper limit of the operation of the tower tray, and improve the mass transfer efficiency;

[0044] 3. The present application can increase the adjustment range of the tower plate by controlling the ratio of the sieve holes to the cap plate holes, thereby maximizing the operational flexibility of the tower.

[0045] The above-mentioned devices, connection relationships, etc. that are not specifically described belong to the prior art and will not be described in detail in the present utility model.

[0046] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0047] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of this application will not be described separately.

[0048] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A novel composite three-dimensional mass transfer tray, comprising a tray (1), wherein the tray (1) is provided with a plurality of cap plate holes (2), a cap (3) is installed on the upper part of the cap plate holes (2), the cap (3) comprises a cap body (4), air holes (5) are provided on both sides of the cap body (4), a top plate (6) is provided on the upper part of the cap body (4), the top plate (6) is connected to the top of the cap body (4), side plates (7) perpendicular to the top plate (6) are provided on both sides of the top plate (6), and an air hole (8) is provided on the side plate (7), characterized in that: Baffles (9) are arranged on the other two sides of the top plate (6), and a plurality of sieve holes (10) are provided at positions on the tower plate (1) corresponding to the baffles (9).

2. A novel composite three-dimensional mass transfer tray according to claim 1, characterized in that: The ratio of the area of ​​the sieve hole (10) to the area of ​​the cap plate hole (2) is 0.1-1.

5.

3. A novel composite three-dimensional mass transfer tray according to claim 1, characterized in that: The baffle (9) is projected onto the tower plate (1) to cover all the sieve holes (10).

4. A novel composite three-dimensional mass transfer tray according to claim 1, characterized in that: The shape of the sieve hole (10) is at least one of a circular shape, a keyway shape, and a rectangular shape.

5. A novel composite three-dimensional mass transfer tray according to claim 1, characterized in that: The baffle (9) is a single plate (11), and the single plate (11) is connected to both sides of the top plate (6).

6. A novel composite three-dimensional mass transfer tray according to claim 5, characterized in that: The cross-sectional shape of the single plate (11) is one of a square, a semicircle, and a semi-ellipse.

7. A novel composite three-dimensional mass transfer tray according to claim 5 or 6, characterized in that: Vertical plates (12) perpendicular to the single plate (11) are arranged on both sides of the single plate (11).

8. A novel composite three-dimensional mass transfer tray according to claim 7, characterized in that: The vertical plate (12) is provided with a plurality of holes (13).

9. A novel composite three-dimensional mass transfer tray according to claim 1, characterized in that: The cap cover body (4) comprises a symmetrically arranged mounting plate 1 (14) and a mounting plate 2, a mounting plate 3 (15) and a mounting plate 4 (16) are symmetrically arranged between the mounting plate 1 (14) and the mounting plate 2, and air holes (5) are arranged on the mounting plate 1 (14) and the mounting plate 2; the height of the mounting plate 1 (14) and the mounting plate 2 is smaller than the height of the mounting plate 3 (15) and the mounting plate 4 (16), and an air intake channel (17) is formed between the mounting plate 1 (14) and the mounting plate 3 (15) and the mounting plate 4 (16), and between the mounting plate 2 and the mounting plate 3 (15) and the mounting plate 4 (16); the side plates (7) are respectively arranged on one side of the mounting plate 1 (14) and the mounting plate 2.

10. A novel composite three-dimensional mass transfer tray according to claim 9, characterized in that: The mounting plate 1 (14) and the mounting plate 2 are rectangular, the mounting plate 3 (15) and the mounting plate 4 (16) are trapezoidal, and the trapezoidal upper bases of the mounting plate 3 (15) and the mounting plate 4 (16) are connected to the top plate (6).

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