Flow stirring structure of demister

Abstract

The utility model relates to a flow stirring structure of a demister, which belongs to the technical field of demisters and comprises a plurality of baffle plates positioned in a reaction tower, each baffle plate comprises a first stirring plate section, a second stirring plate section, a first straight plate section, a first folded plate section, a second straight plate section, a second folded plate section and a third straight plate section, and the first straight plate section, the first folded plate section, the second straight plate section, the second folded plate section and the third straight plate section are integrally connected. The first straight plate section, the second straight plate section and the third straight plate section are arranged in the airflow flowing direction. One end of the first stirring plate section is fixed at one end of the second folded plate section; the cross section of the second stirring plate section is a direct triangle, one right-angle side of the second stirring plate section is parallel to the second straight plate section, and the other right-angle side of the second stirring plate section is fixed at the other end of the first stirring plate section. According to the utility model, one right-angle side of the right-angled triangular second stirring plate section is parallel to the second straight plate section, and the other right-angle side of the right-angled triangular second stirring plate section is fixed at the other end of the first stirring plate section, so that airflow in the airflow channel can be uniformly distributed, the airflow velocity gradient is slowed down, the airflow pressure drop is reduced, and the demisting effect of the demister is improved.

Description

Technical Field

[0001] This utility model relates to the field of demister technology, and in particular to a demister agitation structure. Background Technology

[0002] To improve the demisting effect and efficiency of demisters, baffles are usually installed inside the demister. Traditional demister baffles consist of multiple straight-flow sections and multiple alternating bends in the baffles. This not only changes the fluid velocity and increases the fluid flow distance within the baffles, but also alters the fluid flow pressure. Figure 1 and Figure 2 As shown.

[0003] However, there are large areas of high-speed flow fields inside the baffle tube, including multiple bends from the inlet and the outlet. The uneven velocity distribution caused by the second bend extends to the outlet over a large area. Above the second bend, below the third bend, below the fourth bend, and behind the fourth bend, there are also large areas of extremely low velocity. This results in a highly uneven velocity distribution and a large velocity gradient inside the baffle tube, causing some droplets to fail to effectively impact the demister surface, thus reducing the overall demisting efficiency. At the same time, the inlet pressure of the baffle tube is high, while the pressure in the middle and rear sections is low, resulting in a large pressure drop in the internal flow field. Excessive pressure drop may lead to excessively high flow velocities, preventing droplets from having enough time to contact the demister surface and reducing demisting efficiency.

[0004] Therefore, how to design a demister baffle structure with uniform fluid velocity distribution, small fluid velocity gradient, small fluid pressure drop and good demisting effect is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This invention provides a demister agitation structure, which solves the technical problem of poor demisting effect of existing demister baffle structures.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a demister agitation structure, comprising: multiple baffles all located inside the reaction tower.

[0007] The multiple baffles are distributed at intervals along the airflow perpendicular to the reaction tower and define airflow channels between adjacent baffles. Each baffle includes a first stirring plate section, a second stirring plate section, and an integrally connected first straight plate section, first folded plate section, second straight plate section, second folded plate section, and third straight plate section.

[0008] The first straight plate segment, the second straight plate segment, and the third straight plate segment are all arranged along the airflow direction. The first straight plate segment and the third straight plate segment have the same horizontal height and are both higher than the height of the second straight plate segment. The first folding plate segment is arranged inclined downward from the first straight plate segment to the second straight plate segment. The second folding plate segment is arranged inclined upward from the second straight plate segment to the third straight plate segment.

[0009] The first stirring plate segment is arranged along the inclined direction of the second folding plate segment and one end of it is fixed to the end of the second folding plate segment near the second straight plate segment; the cross-section of the second stirring plate segment is a straight triangle, one right-angled side of which is arranged parallel to the second straight plate segment and the other right-angled side is fixed to the other end of the first stirring plate segment.

[0010] The beneficial effects of this utility model are: it improves the traditional baffle structure by using a right-angled triangle second stirring plate section with one right-angled side arranged parallel to the second straight plate section, and the other right-angled side fixed to the other end of the first stirring plate section. This can make the airflow distribution in the airflow channel uniform, slow down the airflow velocity gradient, and reduce the airflow pressure drop, thereby improving the demisting efficiency and demisting effect of the demister.

[0011] Based on the above technical solution, the present invention can be further improved as follows.

[0012] Furthermore, it also includes multiple flow dividers, which are arranged perpendicular to the airflow direction and distributed in the inner center of multiple airflow channels.

[0013] The above-mentioned additional beneficial effects are: the flow divider can disperse the airflow in the airflow channel, increase the turbulence dispersion rate, and at the same time, the turbulent flow field increases the probability of droplets carried in the flue gas hitting the baffle wall.

[0014] Furthermore, the thickness of the first straight plate segment, the first folded plate segment, the second straight plate segment, the second folded plate segment, and the third straight plate segment is all 26-28 mm.

[0015] Furthermore, the thickness of both the first stirring plate section and the second stirring plate section is 15-20 mm.

[0016] Furthermore, the lengths of the first straight section, the second straight section, and the third straight section are all 1.2 to 3.5 m.

[0017] Furthermore, the lengths of both the first and second folding plate segments are 2.4–4.8 mm.

[0018] Furthermore, the length of the first stirring plate section is 0.4 to 0.6 m.

[0019] Furthermore, the length of the second stirring plate section is 0.1 to 0.2 m. Attached Figure Description

[0020] Figure 1 This is a velocity cloud diagram of the flow field inside the baffle tube in the demister agitation structure of this utility model;

[0021] Figure 2 This is a pressure cloud diagram of the flow field inside the baffle tube in the demister agitation structure of this utility model;

[0022] Figure 3 This is a schematic diagram of a demister agitation structure according to the present invention;

[0023] Figure 4 for Figure 3 Enlarged structural diagram at point A.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Baffle plate; 11. First stirring plate section; 12. Second stirring plate section; 13. First straight plate section; 14. First folding plate section; 15. Second straight plate section; 16. Second folding plate section; 17. Third straight plate section; 2. Diverting rod. Detailed Implementation

[0026] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0027] like Figure 3 and Figure 4 As shown, a demister agitation structure includes: multiple baffles 1, all located within the reaction tower.

[0028] Multiple baffles 1 are distributed at intervals along the airflow within the vertical reaction tower and define airflow channels between adjacent baffles 1. Each baffle 1 includes a first stirring plate section 11, a second stirring plate section 12, and integrally connected first straight plate section 13, first folding plate section 14, second straight plate section 15, second folding plate section 16, and third straight plate section 17.

[0029] The first straight plate segment 13, the second straight plate segment 15, and the third straight plate segment 17 are all arranged along the airflow direction. The first straight plate segment 13 and the third straight plate segment 17 have the same horizontal height and are both higher than the second straight plate segment 15. The first folded plate segment 14 is arranged downward from the first straight plate segment 13 to the second straight plate segment 15. The second folded plate segment 16 is arranged upward from the second straight plate segment 15 to the third straight plate segment 17.

[0030] The first stirring plate segment 11 is arranged along the inclined direction of the second folding plate segment 16 and one end of it is fixed to the end of the second folding plate segment 16 near the second straight plate segment 15; the cross-section of the second stirring plate segment 12 is a straight triangle, one right-angled side of which is arranged parallel to the second straight plate segment 15, and the other right-angled side is fixed to the other end of the first stirring plate segment 11.

[0031] like Figure 2 As shown, in some specific embodiments, multiple diverting rods 2 may also be included, which are arranged along the vertical airflow direction and distributed in the inner middle of multiple airflow channels.

[0032] In some specific embodiments, the thickness of the first straight plate segment 13, the first folded plate segment 14, the second straight plate segment 15, the second folded plate segment 16, and the third straight plate segment 17 can all be 26 to 28 mm.

[0033] Specifically, the thickness of both the first stirring plate section 11 and the second stirring plate section 12 can be 15-20 mm.

[0034] Specifically, the lengths of the first straight section 13, the second straight section 15, and the third straight section 17 can all be 1.2 to 3.5 m.

[0035] Specifically, the lengths of the first folding plate segment 14 and the second folding plate segment 16 can both be 2.4 to 4.8 mm.

[0036] Specifically, the length of the first stirring plate section 11 can be 0.4 to 0.6 m.

[0037] Specifically, the length of the second stirring plate section 12 can be 0.1 to 0.2 m.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A mist eliminator flow disruption structure characterized by, include: Multiple baffles (1) are located inside the reaction tower. Multiple baffles (1) are distributed at intervals along the vertical airflow in the reaction tower and define airflow channels between adjacent baffles (1). Each baffle (1) includes a first stirring plate section (11), a second stirring plate section (12), and an integrally connected first straight plate section (13), a first folding plate section (14), a second straight plate section (15), a second folding plate section (16), and a third straight plate section (17). The first straight plate segment (13), the second straight plate segment (15), and the third straight plate segment (17) are all arranged along the airflow direction. The first straight plate segment (13) and the third straight plate segment (17) are at the same horizontal height and are both higher than the second straight plate segment (15). The first folding plate segment (14) is arranged downward from the first straight plate segment (13) to the second straight plate segment (15). The second folding plate segment (16) is arranged upward from the second straight plate segment (15) to the third straight plate segment (17). The first stirring plate segment (11) is arranged along the inclined direction of the second folding plate segment (16) and one end of it is fixed to the end of the second folding plate segment (16) near the second straight plate segment (15); the cross section of the second stirring plate segment (12) is a straight triangle, one right-angled side of which is arranged parallel to the second straight plate segment (15), and the other right-angled side of which is fixed to the other end of the first stirring plate segment (11).

2. A flow- inducing structure for a mist eliminator according to claim 1, wherein It also includes multiple flow dividers (2), which are arranged perpendicular to the airflow direction and distributed in the inner middle of multiple airflow channels.

3. A flow- inducing structure for a mist eliminator according to claim 1, wherein The thickness of the first straight plate segment (13), the first folded plate segment (14), the second straight plate segment (15), the second folded plate segment (16), and the third straight plate segment (17) is 26-28 mm.

4. The demister flow structure according to claim 1, wherein The thickness of the first stirring plate section (11) and the second stirring plate section (12) is 15-20 mm.

5. The demister flow structure according to claim 1, wherein The lengths of the first straight section (13), the second straight section (15), and the third straight section (17) are all 1.2 to 3.5 m.

6. A flow- inducing structure for a mist eliminator according to claim 1, wherein The lengths of the first folding plate segment (14) and the second folding plate segment (16) are both 2.4 to 4.8 mm.

7. The demister flow structure according to claim 1, wherein The length of the first stirring plate section (11) is 0.4 to 0.6 m.

8. The demister flow structure according to claim 1, wherein The length of the second stirring plate section (12) is 0.1 to 0.2 m.

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