Bowl-shaped tray device for removing flue gas pollutants by wet method

Abstract

The utility model discloses a bowl-shaped tray device for removing flue gas pollutants by a wet method, which comprises a plurality of tray supporting beams which are uniformly and symmetrically arranged, a plurality of filtering structures are arranged on the surfaces of the tray supporting beams and are uniformly arranged on the inner sides of the tray supporting beams, and the tray supporting beams are arranged on the inner sides of the tray supporting beams. The number of the tray supporting beams is multiple, and the tray supporting beams are evenly and symmetrically arranged. When flue gas containing pollutants enters the tray bowl-shaped pore plate from the bottom of the tray bowl-shaped pore plate device, the flow velocity of the flue gas is adjusted and the flue gas flow field is uniformly distributed through the aperture ratio of the tray bowl-shaped pore plate device, and meanwhile, slurry can form a water film in the bowl-shaped tray, so that better contact reaction between the flue gas and the slurry is realized, and the quality of the flue gas is improved. By arranging the tray bowl-shaped pore plate and the tray ring plate, the gas-liquid mass transfer area is about 1.5 times that of a traditional tray, the gas-liquid contact path is increased by about 3 times, and the desulfurization efficiency can be better improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas pollutant removal, in particular to a bowl-shaped tray device for wet removal of flue gas pollutants. Background Art

[0002] As the country's air pollution control becomes increasingly strict and emission limits are gradually increased, many flue gas desulfurization devices built earlier can no longer meet emission requirements. It is urgent to upgrade and transform existing desulfurization devices to further improve the desulfurization efficiency of the units to meet higher emission requirements.

[0003] At present, the empty tower spray technology is the mainstream desulfurization technology of large domestic desulfurization equipment manufacturers. In order to improve the desulfurization efficiency, it is necessary to increase the spray layer or modify the tower internals to improve the gas-liquid mass transfer efficiency. Adding a spray layer requires the original tower body to be modified, the tower body to be raised, and the foundation load of the original desulfurization tower needs to be calculated. The modification project is large, the modification cycle is long, and the modification cost is high. The modification of the tower internals usually adds a layer of tray at the bottom of the spray layer in the tower to improve the gas-liquid mass transfer efficiency. The project is small, the modification time is short, and the modification cost is low. The traditional tray structure is to open a certain number of circular holes on the flat plate, and there is a certain height of the liquid holding layer on the tray. The flue gas passes through the liquid holding layer from the circular holes below the tray, and the slurry on the tray falls into the slurry pool through the circular holes. This tray structure has defects such as short gas-liquid contact path and small gas-liquid mass transfer area. In order to further improve the desulfurization efficiency, it is necessary to upgrade and improve the traditional flat tray. Utility Model Content

[0004] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide a bowl-shaped tray device for wet removal of flue gas pollutants, which has the advantages of simple structure, convenient processing, low modification cost and high removal efficiency, and solves the defects of the tray structure such as short gas-liquid contact path and small gas-liquid mass transfer area. In order to further improve the desulfurization efficiency, it is necessary to upgrade and improve the traditional flat tray.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bowl-shaped tray device for wet removal of flue gas pollutants, comprising a tray support beam;

[0006] The number of the tray support beams is several and they are evenly and symmetrically arranged. A filtering structure is placed on the surface of the tray support beam. The number of the filtering structures is several and they are evenly arranged on the inner side of the tray support beam.

[0007] As a preferred embodiment of the present invention, the filtering structure includes a tray support plate placed on the top of the tray support beam, the bottom of the tray support plate is connected to a tray ring plate, and the bottom of the tray ring plate is fixedly connected to a tray bowl-shaped orifice plate.

[0008] As a preferred embodiment of the present invention, the bowl-shaped orifice plate of the tray is provided with through holes, and the through holes are elliptical holes or circular holes, as well as holes of any shape, so that the gas passing through the bowl-shaped tray device can be evenly dispersed at a reasonable flow rate.

[0009] As a preferred embodiment of the present invention, the thickness of the pallet ring plate is 2-4 mm.

[0010] As a preferred embodiment of the present invention, the pallet support beam is a frame beam structure, the pallet support plate is mounted on the surface of the pallet support beam, and the frame pallet support beam is calculated and designed based on the tower body diameter, the size of the pallet bowl-shaped orifice plate device and the bearing load.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. When the flue gas containing pollutants enters the tray bowl-shaped orifice plate from the bottom of the tray bowl-shaped orifice plate device, the utility model adjusts the flue gas flow rate and evenly distributes the flue gas flow field through the opening rate of the tray bowl-shaped orifice plate device, and is conducive to the formation of a water film by the slurry in the bowl-shaped tray, so as to achieve a better contact reaction between the flue gas and the slurry, thereby achieving the effect of improving the pollutant removal efficiency. By arranging the tray bowl-shaped orifice plate and the tray ring plate, the gas-liquid mass transfer area is about 1.5 times that of the traditional tray, and the gas-liquid contact path is increased by about 3 times, which can better improve the desulfurization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0015] Figure 3 This is a schematic diagram of the filtering structure of the utility model;

[0016] Figure 4 It is a bottom view schematic diagram of the filtering structure of the utility model.

[0017] In the figure: 1. tray support beam; 2. filter structure; 3. tray support plate; 4. tray ring plate; 5. tray bowl-shaped perforated plate; 6. through hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figures 1 to 4 As shown, the utility model provides a bowl-shaped tray device for wet removal of flue gas pollutants, including a tray support beam 1.

[0020] There are several tray support beams 1 which are evenly and symmetrically arranged. A filtering structure 2 is placed on the surface of the tray support beam 1 . There are several filtering structures 2 which are evenly arranged on the inner side of the tray support beam 1 .

[0021] refer to Figure 3 The filtering structure 2 includes a tray support plate 3 placed on the top of the tray support beam 1, the bottom of the tray support plate 3 is connected to a tray ring plate 4, and the bottom of the tray ring plate 4 is fixedly connected to a tray bowl-shaped orifice plate 5.

[0022] refer to Figure 3 The tray bowl-shaped orifice plate 5 is provided with a through hole 6, which can be an elliptical hole or a circular hole, or a hole of any shape, so that the gas passing through the bowl-shaped tray device can be dispersed evenly at a reasonable flow rate.

[0023] refer to Figure 3 The thickness of the pallet ring plate 4 is 2-4 mm.

[0024] refer to Figure 3 The pallet support beam 1 is a frame beam structure, the pallet support plate 3 is erected on the surface of the pallet support beam 1, and the frame pallet support beam 1 is calculated and designed according to the tower body diameter, the device size of the pallet bowl-shaped orifice plate 5 and the bearing load.

[0025] The working principle and use process of the utility model are as follows: the slurry falls from the spray layer into the tray bowl-shaped orifice plate 5, and a flowing liquid accumulation layer is formed on the surface of the tray bowl-shaped orifice plate 5. The flue gas enters the tray bowl-shaped orifice plate 5 from the through hole 6 of the tray bowl-shaped orifice plate 5, and fully contacts and reacts with the slurry. Because the tray is bowl-shaped, the gas-liquid contact area and path are increased, which greatly improves the efficiency of removing pollutants in the flue gas.

[0026] In summary: the bowl-shaped tray device used for wet removal of flue gas pollutants, when the flue gas containing pollutants enters the tray bowl-shaped orifice plate 5 from the bottom of the tray bowl-shaped orifice plate 5 device, the flue gas flow rate is adjusted and the flue gas flow field is evenly distributed through the opening rate of the tray bowl-shaped orifice plate 5 device, and at the same time, it is beneficial for the slurry to form a water film in the bowl-shaped tray, thereby achieving a better contact reaction between the flue gas and the slurry, thereby achieving the effect of improving the pollutant removal efficiency. By arranging the tray bowl-shaped orifice plate 5 and the tray ring plate 4, the gas-liquid mass transfer area is about 1.5 times that of the traditional tray, and the gas-liquid contact path is increased by about 3 times, which can better improve the desulfurization efficiency.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bowl-shaped tray device for wet removal of flue gas pollutants, comprising a tray support beam (1); Features: The number of the tray support beams (1) is several and they are evenly and symmetrically arranged; a filtering structure (2) is placed on the surface of the tray support beam (1); the number of the filtering structures (2) is several and they are evenly arranged on the inner side of the tray support beam (1); the filtering structure (2) comprises a tray support plate (3) placed on the top of the tray support beam (1); the bottom of the tray support plate (3) is connected to a tray ring plate (4); the bottom of the tray ring plate (4) is fixedly connected to a tray bowl-shaped orifice plate (5); a through hole (6) is opened on the tray bowl-shaped orifice plate (5); the through hole (6) is an elliptical hole or a circular hole, or a hole of any shape, so that the gas passing through the bowl-shaped tray device can be dispersed at a reasonable flow rate and evenly.

2. A bowl-shaped tray device for wet removal of flue gas pollutants according to claim 1, characterized in that: The pallet ring plate (4) has a thickness of 2-4 mm.

3. A bowl-shaped tray device for wet removal of flue gas pollutants according to claim 1, characterized in that: The pallet support beam (1) is a frame beam structure, the pallet support plate (3) is mounted on the surface of the pallet support beam (1), and the frame pallet support beam (1) is calculated and designed according to the tower body diameter, the device size of the pallet bowl-shaped orifice plate (5) and the bearing load.

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