Spray tower device for waste gas treatment

Abstract

The utility model discloses a spray tower device for waste gas treatment, which adopts a wet desulphurization process and comprises a spray tower main body, a plurality of spray components and a plurality of rotational flow plates. A flue gas inlet is formed in the bottom of the spray tower main body, and a flue gas outlet is formed in the top of the spray tower main body; the plurality of spraying components are arranged at the upper part of a spraying chamber of the spraying tower main body; the plurality of rotational flow plates are connected to the lower part of the spray chamber of the spray tower main body, are sequentially distributed up and down at intervals along the depth direction of the spray tower main body, and are positioned between the spray component and the flue gas inlet. Through the design of a plurality of rotational flow plates, the flue gas speed can be in a reasonable range, and the spray tower effectively resists the impact of high-speed flue gas. By analyzing the velocity field in the spray tower, the cyclone plate can improve the flue gas flowing condition and change the distribution of the flow field in the tower, so that the flue gas treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spray towers, in particular to a spray tower device for waste gas treatment. Background Art

[0002] The combustion of coal and oil produces a large amount of SO 2 , the smelting of non-ferrous metal ores produces SO 2 SO is generated in chemical, oil refining and sulfuric acid plants. 2 , SO 2 The emission will cause severe air pollution. At present, wet desulfurization is the desulfurization technology widely used in flue gas desulfurization process, and the desulfurization spray tower is the most commonly used tower type in flue gas wet desulfurization.

[0003] The Chinese utility model patent with announcement number CN205672779U discloses a desulfurization spray tower spray device, in which at least one spray layer is arranged in the desulfurization spray tower device, and the spray layer includes a spray main pipe, and a plurality of spray branches are arranged on both sides of the spray main pipe, and each spray branch pipe is equipped with at least one nozzle; a flue gas inlet is arranged on the side wall of the desulfurization spray tower device below the spray layer; on the spray layer, the number of nozzles at a position far from the flue gas inlet is greater than the number of nozzles at a position close to the flue gas inlet.

[0004] The applicant has found that during the flue gas emission process, the flow rate of the flue gas often changes. Even if the flue gas flows upstream, if the flow rate of the flue gas is too fast, the flue gas desulfurization will be insufficient. The existing desulfurization spray tower is difficult to solve this technical problem. Utility Model Content

[0005] In order to overcome the above technical defects, the utility model provides a spray tower device for waste gas treatment.

[0006] In order to solve the above problems, the utility model is implemented according to the following technical solutions:

[0007] The utility model discloses a spray tower device for waste gas treatment, the spray tower device comprising:

[0008] A spray tower body, wherein a smoke inlet is provided at the bottom of the spray tower body, and a smoke outlet is provided at the top of the spray tower body;

[0009] A plurality of spray components, wherein the plurality of spray components are arranged at an upper portion of a spray chamber of the spray tower body;

[0010] A plurality of swirl plates are connected to the lower part of the spray chamber of the spray tower body, the plurality of swirl plates are distributed in sequence up and down along the depth direction of the spray tower body, and the plurality of swirl plates are located between the spray component and the flue gas inlet.

[0011] Preferably, the swirl plate consists of inner blades, outer blades and a supporting structure, and both the inner blades and the outer blades are connected to the supporting structure.

[0012] Preferably, the angles between the inner blades and the outer blades and the horizontal plane are both 25°.

[0013] Preferably, the number of blades of the inner layer blades and the number of blades of the outer layer blades are the same, both of which are 18 to 24.

[0014] Preferably, the number of blades of the inner layer blades and the number of blades of the outer layer blades are the same, that is, 18.

[0015] Preferably, the support structure comprises an outer circular frame, an inner circular frame and a central connecting member;

[0016] The outer contour of the outer circular frame is adapted to the spray tower body, and the outer circular frame is used to connect to the inner wall of the spray chamber of the spray tower body;

[0017] Wherein, each blade of the outer layer blades is respectively connected to the outer circular frame and the inner circular frame; each blade of the inner layer blades is respectively connected to the inner circular frame and the central connecting piece.

[0018] Preferably, the spray tower device includes 2 to 3 swirl plates.

[0019] Preferably, the spray tower device comprises three spray components, and the three spray components are sequentially arranged in an upper and lower interval along the depth direction of the spray tower body.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model provides a spray tower device for waste gas treatment, which adopts a wet desulfurization process, and the spray tower device includes a spray tower body, a plurality of spray components and a plurality of swirl plates. The bottom of the spray tower body is provided with a flue gas inlet, and the top of the spray tower body is provided with a flue gas outlet; the plurality of spray components are provided at the upper part of the spray chamber of the spray tower body; the plurality of swirl plates are connected to the lower part of the spray chamber of the spray tower body, and the plurality of swirl plates are sequentially distributed up and down along the depth direction of the spray tower body, and the plurality of swirl plates are located between the spray components and the flue gas inlet.

[0022] The structure of the utility model is easy to assemble and has a stable structure. It adopts a combination of spray and swirl plates. The upper layer adopts a spray layer and the lower layer adopts a swirl plate layer. After the two flow fields of spray and swirl are superimposed, the distribution of flue gas and absorption liquid is more uniform, which is conducive to the stability of efficiency. Through the design of multiple swirl plates, the flue gas velocity can be kept within a reasonable range, and the spray tower can effectively resist the impact of high-speed flue gas. By analyzing the velocity field in the spray tower, it is found that the swirl plate can improve the flow condition of the flue gas and change the flow field distribution in the tower to improve the flue gas treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 It is a schematic cross-sectional view of the spray tower of the utility model;

[0025] Figure 2 It is a front schematic diagram of the spray tower of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the spray component of the utility model (AA section view);

[0027] Figure 4 It is a top view (BB cross-sectional view) of the swirl plate of the utility model;

[0028] In the figure:

[0029] 10- spray tower body, 11- spray chamber, 12- flue gas inlet, 13- flue gas outlet;

[0030] 20-Spraying parts;

[0031] 30-swirl plate, 31-outer blades, 32-inner blades, 33-support structure. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0033] like Figure 1 to Figure 4 As shown, the preferred structure of a spray tower device for waste gas treatment described in the utility model.

[0034] like Figure 1 and Figure 2As shown, a spray tower device for waste gas treatment shown in the utility model mainly adopts a wet desulfurization process for waste gas treatment. The spray tower device includes a spray tower body, a plurality of spray components and a plurality of swirl plates. A flue gas inlet is arranged at the bottom of the spray tower body, and a flue gas outlet is arranged at the top of the spray tower body; a plurality of the spray components are arranged at the upper part of the spray chamber of the spray tower body; a plurality of the swirl plates are connected to the lower part of the spray chamber of the spray tower body, and a plurality of swirl plates are sequentially distributed up and down along the depth direction of the spray tower body, and a plurality of swirl plates are located between the spray components and the flue gas inlet.

[0035] Figure 1 The internal structure of the desulfurization spray tower is shown. The flue gas inlet is on the side of the tower body, and the flue gas enters the tower body along the flue gas inlet. The flue gas outlet is located at the top of the spray tower body, and the circulating slurry is sprayed from multiple spray components arranged on the upper part of the spray chamber inside the spray tower body. The countercurrent contact between the flue gas and the slurry can enhance the mutual disturbance between the gas and liquid phases, which is beneficial to the absorption reaction. The main innovation of the utility model is that a component used to enhance the uniformity of the flow in the tower, namely, a swirl plate, is selected.

[0036] The structure of the utility model is easy to assemble and has a stable structure. It adopts a combination of spray and swirl plates. The upper layer adopts a spray layer and the lower layer adopts a swirl plate layer. After the two flow fields of spray and swirl are superimposed, the distribution of flue gas and absorption liquid is more uniform, which is conducive to the stability of efficiency. Through the design of multiple swirl plates, the flue gas velocity can be kept within a reasonable range, and the spray tower can effectively resist the impact of high-speed flue gas. By analyzing the velocity field in the spray tower, it is found that the swirl plate can improve the flow condition of the flue gas and change the flow field distribution in the tower to improve the flue gas treatment effect.

[0037] In a specific implementation, Figure 4 As shown, the swirl plate is composed of inner blades, outer blades and a supporting structure, and the inner blades and outer blades are both connected to the supporting structure.

[0038] Among them, the supporting structure includes an outer circular frame, an inner circular frame and a central connecting piece; the outer contour of the outer circular frame is adapted to the spray tower body, and the outer circular frame is used to connect the inner wall of the spray chamber of the spray tower body; the blades of the outer layer are respectively connected to the outer circular frame and the inner circular frame; each blade of the inner layer is respectively connected to the inner circular frame and the central connecting piece.

[0039] In the innovation of the utility model, the angles between the inner blades and the outer blades and the horizontal plane are both 25°. The number of the inner blades and the outer blades is the same, both 18 to 24.

[0040] In a preferred implementation, the number of blades of the inner layer blades and the number of blades of the outer layer blades are the same, that is, 18.

[0041] In a preferred implementation, the spray tower device includes 2 to 3 swirl plates.

[0042] The number of blades of different swirl plates will change the flow field distribution in the tower, further affecting the absorption effect of the spray tower. The best structural design was found through experiments to have 2-3 layers of swirl plates with 18 to 24 blades, which gave the best flow characteristics of the spray tower.

[0043] In a specific implementation, the swirl plate is supported by metal, and a corrosion-resistant coating is sprayed on the surface of the swirl plate. In an implementation, the swirl plate is fixed in the spray tower body by welding. In an implementation, a plurality of angle iron mounting parts are provided on the inner wall of the spray chamber of the spray tower body, and the swirl plate can be fixed by bolt connection.

[0044] In a specific implementation, the spray tower device includes three spray components, which are sequentially arranged in an upper and lower interval along the depth direction of the spray tower body. The spray components are prior art in the art and will not be described in detail here.

[0045] In a preferred embodiment, a demister is further provided on the top of the spray chamber of the spray tower body, and the demister is provided between the spray component and the flue gas outlet. The desulfurization tower generally adopts a two-stage demister, and the distance between the two-stage demisters should be about 1.8m for easy inspection and maintenance.

[0046] For other structures of the spray tower device for waste gas treatment described in this embodiment, refer to the prior art.

[0047] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A spray tower device for waste gas treatment, characterized in that: The spray tower device comprises: A spray tower body, wherein a smoke inlet is provided at the bottom of the spray tower body, and a smoke outlet is provided at the top of the spray tower body; A plurality of spray components, wherein the plurality of spray components are arranged at an upper portion of a spray chamber of the spray tower body; A plurality of swirl plates, the plurality of swirl plates are connected to the lower part of the spray chamber of the spray tower body, the plurality of swirl plates are sequentially spaced up and down along the depth direction of the spray tower body, and the plurality of swirl plates are located between the spray component and the flue gas inlet; the swirl plates are composed of inner blades, outer blades and a supporting structure, and the inner blades and the outer blades are both connected to the supporting structure; The support structure includes an outer circular frame, an inner circular frame and a central connecting member; The outer contour of the outer circular frame is adapted to the spray tower body, and the outer circular frame is used to connect to the inner wall of the spray chamber of the spray tower body; Wherein, each blade of the outer layer blades is respectively connected to the outer circular frame and the inner circular frame; each blade of the inner layer blades is respectively connected to the inner circular frame and the central connecting piece.

2. The spray tower device for waste gas treatment according to claim 1, characterized in that: The included angles between the inner blades and the outer blades and the horizontal plane are both 25°.

3. The spray tower device for waste gas treatment according to claim 1, characterized in that: The number of the inner blades and the number of the outer blades are the same, both of which are 18 to 24.

4. The spray tower device for waste gas treatment according to claim 3, characterized in that: The number of the inner blades and the number of the outer blades are the same, which are both 18.

5. The spray tower device for waste gas treatment according to claim 1, characterized in that: The spray tower device comprises 2 to 3 swirl plates.

6. The spray tower device for waste gas treatment according to claim 1, characterized in that: The spray tower device comprises three spray components, and the three spray components are sequentially arranged at intervals up and down along the depth direction of the spray tower body.

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