Efficient desulfurization device

Abstract

The utility model relates to an efficient desulfurization device which comprises a denitration tower, a low-temperature electric dust remover and a desulfurization tower, the low-temperature electric dust remover is positioned between the denitration tower and the desulfurization tower; a plurality of layers of spraying frames are arranged in the desulfurizing tower, a tray is arranged between the spraying frames at the lower layer, the periphery of the tray is fixedly connected with the inner edge of the desulfurizing tower, a shunting frame is arranged between the spraying frames at the upper layer, the periphery of the shunting frame is fixedly connected with the inner edge of the desulfurizing tower, and a demisting frame is arranged at the inner edge above the desulfurizing tower. According to the desulfurization system, the double-tray structure is arranged below the two layers of spraying frames in the middle, so that the blockage problem of conventional design is effectively solved, the design concept of double trays and expansion ports is adopted, the turbulence effect of flue gas and removed pollutants can be greatly improved, the desulfurization efficiency is improved, the flue gas can be uniformly distributed, and the desulfurization effect is improved. The contact amount of the flue gas and the spraying slurry is increased, and the desulfurization reaction efficiency is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of desulfurization, in particular to a high-efficiency desulfurization device. Background Art

[0002] With increasingly stringent environmental regulations, industrial emission sources such as coal-fired power plants and steel mills are placing increasingly stringent demands on flue gas desulfurization technology. While traditional wet desulfurization technology is mature and reliable, it still has room for improvement in desulfurization efficiency, operating costs, and water consumption. Therefore, the development of efficient wet desulfurization systems has become a key issue in the current environmental protection field.

[0003] In conventional projects, the tray is placed under the lowest spray, which is located at the high and low temperature stage of the flue gas, which can easily cause the tray to be blocked. In addition, the flue gas and some tiny reactants will rise directly with the hot air flow, affecting the desulfurization effect.

[0004] In view of this, a high-efficiency desulfurization device is proposed. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In view of the following technical problems in the existing technology: the tray of conventional projects is added under the lowest spray, which is located at the high and low temperature stage of the flue gas, which can easily cause the tray to be blocked, and the flue gas and some tiny reactants flow straight up with the hot air, affecting the desulfurization effect.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-efficiency desulfurization device, comprising a denitrification tower, a low-temperature electrostatic precipitator and a desulfurization tower;

[0008] The low-temperature electrostatic precipitator is located between the denitrification tower and the desulfurization tower;

[0009] The desulfurization tower is provided with multiple layers of spray racks, with trays disposed between the spray racks on the lower layer, the outer periphery of the trays being fixedly connected to the inner edge of the desulfurization tower; a diverter rack is disposed between the spray racks on the upper layer, the outer periphery of the diverter rack being fixedly connected to the inner edge of the desulfurization tower; a demisting rack is disposed on the upper inner edge of the desulfurization tower;

[0010] The diversion frame is provided with a plurality of diversion channels;

[0011] A plurality of tray channels are provided on the tray.

[0012] As an optimal technical solution for a high-efficiency desulfurization device, a flue gas heat recovery device is connected between the low-temperature electrostatic precipitator and the denitrification tower, a wet electrostatic precipitator is arranged on the side of the desulfurization tower away from the low-temperature electrostatic precipitator, and a flue gas reheater is arranged on the side of the wet electrostatic precipitator away from the desulfurization tower.

[0013] As an optimal technical solution for a high-efficiency desulfurization device, the diversion channel consists of a curved portion and an expansion portion. The expansion portion is located on the upper and lower surfaces of the diversion frame, facilitating the smooth passage of flue gas and spray slurry through the diversion channel. The curved portion is located in the middle position of the diversion frame, facilitating the bending of a portion of the flue gas when passing through the diversion channel, thereby slowing down the rising rate.

[0014] As an optimal technical solution for an efficient desulfurization device, the tray channel consists of a through hole and an expansion opening. The expansion opening is located on the upper and lower sides of the tray so that the reactants can fall better and the flue gas can flow upward better. The through hole is located in the middle of the tray.

[0015] Beneficial effects of the utility model:

[0016] 1. This desulfurization device adopts a double tray structure, which is set below the middle two-layer spray rack, effectively solving the clogging problem of conventional design. The design concept of double trays and expansion port can greatly increase the turbulence effect of flue gas and removed pollutants, improve desulfurization efficiency, and evenly distribute the flue gas, increase the contact amount between flue gas and spray slurry, and further improve the desulfurization reaction efficiency.

[0017] 2. Through the action of the diverter frame and the curved part, the desulfurization device can make the reactants collide with the inner edge of the curved part and deviate, thereby preventing the reactants from going straight up and improving the desulfurization effect.

[0018] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 This is a schematic diagram of the internal structure of the desulfurization tower of the present utility model.

[0022] Figure 3 This is a schematic diagram of the internal structure of the diverter rack of the present utility model.

[0023] Figure 4 This is a schematic diagram of the internal structure of the tray of the present invention.

[0024] Reference numerals:

[0025] 100. Denitrification tower; 200. Low-temperature electrostatic precipitator; 300. Desulfurization tower; 301. Spray rack; 302. Tray; 3021. Through hole; 3022. Expansion port; 303. Diverter rack; 3031. Bend; 3032. Expansion; 304. Demisting rack; 400. Wet electrostatic precipitator; 500. Flue gas reheater; 600. Flue gas heat recovery device. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it designate a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0030] Example

[0031] Reference Figure 1A high-efficiency desulfurization device includes a denitrification tower 100, a low-temperature electrostatic precipitator 200, and a desulfurization tower 300. The low-temperature electrostatic precipitator 200 is located between the denitrification tower 100 and the desulfurization tower 300. A flue gas heat recovery device 600 is connected between the low-temperature electrostatic precipitator 200 and the denitrification tower 100. A wet electrostatic precipitator 400 is disposed on the side of the desulfurization tower 300 away from the low-temperature electrostatic precipitator 200. A flue gas reheater 500 is disposed on the side of the wet electrostatic precipitator 400 away from the desulfurization tower 300.

[0032] Reference Figure 2 The desulfurization tower 300 is provided with multiple layers of spray racks 301. Trays 302 are arranged between the spray racks 301 on the lower layer. The outer periphery of the trays 302 is fixedly connected to the inner edge of the desulfurization tower 300. Diverter racks 303 are arranged between the spray racks 301 on the upper layer. The outer periphery of the diverter racks 303 is fixedly connected to the inner edge of the desulfurization tower 300. A demisting rack 304 is arranged on the upper inner edge of the desulfurization tower 300.

[0033] Reference Figure 3 The diverter frame 303 is provided with a plurality of diverter channels, which are composed of a curved portion 3031 and an expansion portion 3032. The expansion portion 3032 is located on the upper and lower surfaces of the diverter frame 303, so that the flue gas and the spray slurry can pass through the diverter channel smoothly. The curved portion 3031 is located in the middle of the diverter frame 303, so that the flue gas can bend a part of the diverter channel when passing through the diverter channel, thereby slowing down the rising rate.

[0034] Reference Figure 4 The tray 302 is provided with a plurality of tray channels, which are composed of through holes 3021 and expansion openings 3022 . The expansion openings 3022 are located on the upper and lower surfaces of the tray 302 so that the reactants can fall better and the flue gas can flow upward better. The through holes 3021 are located in the middle of the tray 302 .

[0035] Through the above, it is possible to achieve: the desulfurization tower 300 is provided with different spray racks 301 and trays 302 to increase the contact area and reaction time between the absorbent and the flue gas;

[0036] The double tray 302 structure is designed. In conventional projects, the tray 302 is added to the lowest spray rack 301, which is located at the high and low temperature stage of the flue gas, which can easily cause the tray 302 to be blocked. In this patent, the tray 302 is set below the middle two-layer spray rack 301, effectively solving the blockage problem of the conventional design. The design concept of the double tray 302 and the expansion port 3022 adopted in this patent can greatly increase the turbulence effect of the flue gas and the removed pollutants, improve the desulfurization efficiency, and evenly distribute the flue gas, increase the contact amount between the flue gas and the spray slurry, and further improve the desulfurization reaction efficiency.

[0037] The three spray racks 301 at the bottom use bidirectional nozzles to increase the reaction space between the flue gas and the slurry. The top spray rack 301 uses a unidirectional nozzle to prevent the flue gas from carrying desulfurizer and causing the rear flue gas to exceed the dust standard. Under the action of the diverter rack 303 and the curved part 3031, these reactants can collide with the inner edge of the curved part 3031 and deviate, avoiding straight upward movement, thereby improving the desulfurization effect.

[0038] The desulfurizer is directly added into the spray rack 301, so that the fresh slurry is in direct contact with the treated flue gas, and the desulfurizer reacts quickly and efficiently.

[0039] It will be understood that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A high-efficiency desulfurization device, characterized by: It includes a denitrification tower (100), a low-temperature electrostatic precipitator (200) and a desulfurization tower (300); The low-temperature electrostatic precipitator (200) is located between the denitrification tower (100) and the desulfurization tower (300); The desulfurization tower (300) is provided with multiple layers of spray racks (301), trays (302) are arranged between the spray racks (301) at the lower layer, and the outer periphery of the trays (302) is fixedly connected to the inner edge of the desulfurization tower (300), and a diversion rack (303) is arranged between the spray racks (301) at the upper layer, and the outer periphery of the diversion rack (303) is fixedly connected to the inner edge of the desulfurization tower (300), and a demisting rack (304) is arranged on the upper inner edge of the desulfurization tower (300); The diversion frame (303) is provided with a plurality of diversion channels; The tray (302) is provided with a plurality of tray channels.

2. The high-efficiency desulfurization device according to claim 1, characterized in that: A flue gas heat recovery device (600) is connected between the low-temperature electrostatic precipitator (200) and the denitrification tower (100), a wet electrostatic precipitator (400) is arranged on the side of the desulfurization tower (300) away from the low-temperature electrostatic precipitator (200), and a flue gas reheater (500) is arranged on the side of the wet electrostatic precipitator (400) away from the desulfurization tower (300).

3. The high-efficiency desulfurization device according to claim 1, characterized in that: The diversion channel is composed of a curved portion (3031) and an expansion portion (3032), wherein the expansion portion (3032) is located on the upper and lower surfaces of the diversion frame (303), and the curved portion (3031) is located in the middle of the diversion frame (303).

4. The high-efficiency desulfurization device according to claim 1, characterized in that: The tray channel is composed of a through hole (3021) and an expansion opening (3022), wherein the expansion opening (3022) is located on the upper and lower surfaces of the tray (302), and the through hole (3021) is located in the middle of the tray (302).

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