Wet-process electrostatic desulfurization and dust removal device

Abstract

The utility model belongs to the technical field of flue gas desulfurization and dust removal, and particularly relates to a wet-process electrostatic desulfurization and dust removal device which comprises a desulfurization and dust removal tower, a desulfurization cavity and a dust removal cavity are sequentially arranged in the desulfurization and dust removal tower from top to bottom, desulfurization liquid is added into the desulfurization cavity, a desulfurization assembly is mounted on the desulfurization cavity, and the dust removal cavity is connected with the desulfurization assembly. The desulfurization assembly comprises a gas inlet pipe, the gas inlet pipe is fixedly mounted on the lower side wall of the desulfurization and dust removal tower, and the bottom end of the gas inlet pipe is rotationally connected with an extension pipe; according to the flue gas desulfurization device, flue gas enters desulfurization liquid through the gas inlet pipe and the extension pipe, so that the flue gas is in full contact with the desulfurization liquid, sulfur dioxide in the flue gas is further comprehensively removed, desulfurization is more thorough, and part of smoke dust can be mixed with the desulfurization liquid, precipitated and collected.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization and dust removal, in particular to a wet electrostatic desulfurization and dust removal device. Background Art

[0002] The existing Chinese patent with announcement number CN205412646U discloses a flue gas wet desulfurization dust collector, including a desulfurization dust removal tower, an electrostatic dust removal chamber, a flue gas quality sensor, a desulfurization chamber, an exhaust pipe, a delivery pump body and a connecting pipe. The left side of the desulfurization dust removal tower is connected to the flue gas inlet pipe, and the upper and lower sides of the exhaust pipe are respectively connected to the desulfurization dust removal tower and the sedimentation tank. The left and right sides of the connecting pipe are respectively connected to the upper side of the desulfurization dust removal tower and the chimney, and an induced draft fan is installed on the connecting pipe. An electrostatic device is installed in the electrostatic dust removal chamber. A first sprayer and a second sprayer are installed inside the desulfurization chamber, and the delivery pump body is fixed on the upper side of the material container.

[0003] In view of the above and existing related technologies, the inventors believe that the following defects often exist: the electrostatic device of the device is installed inside the desulfurization and dust removal tower, which is inconvenient to clean or repair the electrostatic device and needs to be improved; therefore, a wet electrostatic desulfurization and dust removal device is proposed to address the above problems. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model proposes a wet electrostatic desulfurization and dust removal device.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a wet electrostatic desulfurization and dust removal device described in the present invention includes a desulfurization and dust removal tower, the interior of the desulfurization and dust removal tower is sequentially provided with a desulfurization chamber and a dust removal chamber from top to bottom, the interior of the desulfurization chamber is added with desulfurization liquid, a desulfurization component is installed on the desulfurization chamber, the desulfurization component includes an air inlet pipe, the air inlet pipe is fixedly installed on the lower side wall of the desulfurization and dust removal tower, the bottom end of the air inlet pipe is rotatably connected to an extension pipe, the upper interior of the extension pipe is fixedly connected to an impeller, the outer wall of the extension pipe is slidably connected to a buoyancy plate, and the side wall of the buoyancy plate There are several crushing plates fixedly connected. When in use, the flue gas enters the desulfurization liquid through the air inlet pipe and the extension pipe, so that the flue gas and the desulfurization liquid are fully in contact, and the sulfur dioxide in the flue gas is fully removed, and the desulfurization is more thorough. Part of the smoke dust will be mixed with the desulfurization liquid and precipitated for collection. Since foam will be generated when the flue gas flows upward, and the foam will carry a certain amount of smoke dust, the flow of flue gas drives the impeller to drive the extension pipe to rotate, and the buoyancy plate drives the crushing plate to always float on the surface of the desulfurization liquid, so that the crushing plate follows the rotation of the extension pipe to crush the foam on the desulfurization liquid surface, thereby improving the smoke dust collection effect.

[0006] Preferably, a liquid inlet end and a liquid outlet end are respectively installed on the upper and lower sides of the side wall of the desulfurization and dust removal tower. Valves are respectively installed on the liquid inlet end and the liquid outlet end, and desulfurization liquid can be added or discharged through the liquid inlet end and the liquid outlet end.

[0007] Preferably, a ring-shaped support frame is rotatably connected to the lower side wall of the extension pipe, and the support frame is fixedly connected to the desulfurization and dust removal tower.

[0008] Preferably, an air supply fan is fixedly connected inside the air inlet pipe. By means of the air supply fan, the wind force of the smoke and dust is increased, so that it can better contact with the desulfurization liquid.

[0009] Preferably, a liquid level sensor is fixedly connected inside the desulfurization and dust removal tower. The liquid level sensor is electrically connected to a warning device. When the liquid level sensor detects that the liquid level of the desulfurization liquid is low, it controls the warning device to generate a warning to remind the operator to add desulfurization liquid in time.

[0010] Preferably, a dust removal component is installed inside the dust removal chamber. The dust removal component includes a slotted opening which is opened on the upper side wall of the desulfurization and dust removal tower. After the flue gas is desulfurized, it flows upward, and the electrostatic precipitator is used to remove the dust in the flue gas. When the electrostatic precipitator needs to be overhauled or cleaned, the electric push rod is moved to drive the sealing plate to slide outwards, driving the electrostatic precipitator out of the desulfurization and dust removal tower for convenient overhaul. And when the electrostatic precipitator moves, the dust on the surface of the electrostatic precipitator can be scraped off by the scraper to achieve automatic cleaning.

[0011] Preferably, the dust removal component further includes a sealing plate, and a plurality of electrostatic precipitators are fixedly connected to the surface of the sealing plate.

[0012] Preferably, the dust removal component further includes two electric push rods. The electric push rods are fixedly installed on the upper side wall of the desulfurization and dust removal tower, and the driving ends of the electric push rods are fixedly connected to the sealing plate. The sealing plate is used to seal against the slotted opening to prevent the flue gas from overflowing.

[0013] Preferably, the dust removal component further includes a scraper. The scraper is fixedly installed inside the slotted opening, and a cleaning opening for the electrostatic precipitator to pass through is formed on the surface of the scraper.

[0014] Preferably, a ring-shaped spray pipe is fixedly connected to the inner wall of the desulfurization and dust removal tower, and the spray pipe is located above the electrostatic precipitator. A plurality of equally spaced inclined downward nozzles are fixedly connected to the inner side wall of the spray pipe. The spray pipe is connected to a water pump through a pipeline. When cleaning the dust on the surface of the electrostatic precipitator, the water pump is operated to pump the liquid into the spray pipe, and the liquid is sprayed out by the nozzles to contact with the dust for dust removal.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. In the utility model, flue gas enters the desulfurization liquid through the inlet pipe and the extension pipe, enabling the flue gas to come into full contact with the desulfurization liquid, thereby comprehensively removing sulfur dioxide in the flue gas, making the desulfurization more thorough, and part of the soot will be mixed with the desulfurization liquid and precipitated for collection.

[0017] 2. In the utility model, the rotation of the extension pipe is driven by the impeller through the flow of flue gas. At the same time, the buoyancy plate drives the crushing plate to always float on the surface of the desulfurization liquid, so that the crushing plate rotates with the extension pipe to break the foam on the surface of the desulfurization liquid, improving the collection effect of soot. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 It is a sectional view of the desulfurization and dust removal tower of the present utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the desulfurization component of the present utility model;

[0022] Figure 4 It is a sectional view of the extension pipe of the present utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the dust removal component of the present utility model.

[0024] In the figure: 1. Desulfurization and dust removal tower; 2. Desulfurization component; 21. Inlet pipe; 22. Extension pipe; 23. Impeller; 24. Buoyancy plate; 25. Crushing plate; 26. Support frame; 3. Liquid inlet end; 4. Liquid outlet end; 5. Liquid level sensor; 6. Dust removal component; 61. Groove; 62. Sealing plate; 63. Electrostatic precipitator; 64. Electric push rod; 65. Scraper. Detailed Embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] Embodiment 1

[0027] Please refer to Figures 1-4 As shown in the figure, a wet electrostatic desulfurization and dust removal device includes a desulfurization and dust removal tower 1. Inside the desulfurization and dust removal tower 1, a desulfurization chamber and a dust removal chamber are sequentially arranged from top to bottom. Desulfurization liquid is added inside the desulfurization chamber. A desulfurization component 2 is installed on the desulfurization chamber. The desulfurization component 2 includes an air inlet pipe 21. The air inlet pipe 21 is fixedly installed on the lower side wall of the desulfurization and dust removal tower 1. The bottom end of the air inlet pipe 21 is rotatably connected to an extension pipe 22. An impeller 23 is fixedly connected above the inside of the extension pipe 22. A buoyancy plate 24 is slidably connected to the outer wall of the extension pipe 22. A plurality of crushing plates 25 are fixedly connected to the side wall of the buoyancy plate 24. During use, flue gas enters the desulfurization liquid through the air inlet pipe 21 and the extension pipe 22, enabling the flue gas to be in full contact with the desulfurization liquid, thereby comprehensively removing sulfur dioxide in the flue gas, making the desulfurization more thorough. And part of the dust will be mixed with the desulfurization liquid and precipitated for collection. Since foam will be generated when the flue gas flows upward, and the foam will carry a certain amount of dust, the flue gas flow drives the impeller 23 to drive the extension pipe 22 to rotate. At the same time, the buoyancy plate 24 drives the crushing plates 25 to always float on the desulfurization liquid surface, so that the crushing plates 25 rotate with the extension pipe 22 to break the foam on the desulfurization liquid surface, improving the dust collection effect.

[0028] Liquid inlet ends 3 and liquid outlet ends 4 are respectively installed on the upper and lower sides of the side wall of the desulfurization and dust removal tower 1. Valves are respectively installed on the liquid inlet ends 3 and the liquid outlet ends 4. The desulfurization liquid can be added or discharged through the liquid inlet ends 3 and the liquid outlet ends 4.

[0029] The lower side wall of the extension pipe 22 is rotatably connected to an annular support frame 26, and the support frame 26 is fixedly connected to the desulfurization and dust removal tower 1.

[0030] An air supply fan is fixedly connected inside the air inlet pipe 21. By increasing the wind force of the dust, it can make the dust better contact with the desulfurization liquid.

[0031] A liquid level sensor 5 is fixedly connected inside the desulfurization and dust removal tower 1. The liquid level sensor 5 is electrically connected to an alarm. When the liquid level sensor 5 detects that the desulfurization liquid level is low, it controls the alarm to generate an alarm to remind the operator to add desulfurization liquid in time.

[0032] Embodiment 2

[0033] Compared with Embodiment 1, please refer to Figure 5As shown, the utility model provides another embodiment, a dust removal component 6 is installed inside the dust removal chamber, and the dust removal component 6 includes a slot 61, and the slot 61 is opened on the upper side wall of the desulfurization dust removal tower 1. The flue gas flows upward after desulfurization, and the dust in the flue gas is removed by the electrostatic precipitator 63. When the electrostatic precipitator 63 needs to be inspected or cleaned, the moving electric push rod 64 drives the sealing plate 62 to slide outward, and drives the electrostatic precipitator 63 to move out of the desulfurization dust removal tower 1, which is convenient for inspection and maintenance. When the electrostatic precipitator 63 moves, the dust on the surface of the electrostatic precipitator 63 can be scraped off by the scraper 65, thereby realizing automatic cleaning.

[0034] The dust removal assembly 6 further includes a sealing plate 62 , and a plurality of electrostatic precipitators 63 are fixedly connected to the surface of the sealing plate 62 .

[0035] The dust removal assembly 6 also includes two electric push rods 64, which are fixedly mounted on the upper side wall of the desulfurization dust removal tower 1, and the driving end of the electric push rod 64 is fixedly connected to the sealing plate 62, which is pressed against the slot 61 by the sealing plate 62 to seal and prevent flue gas from overflowing.

[0036] The dust removal assembly 6 further includes a scraper 65 , which is fixedly mounted inside the slot 61 . A cleaning port is provided on the surface of the scraper 65 for the electrostatic precipitator 63 to pass through.

[0037] The inner wall of the desulfurization and dust removal tower 1 is fixedly connected to a ring-shaped spray pipe, and the spray pipe is located above the electrostatic precipitator 63. The inner wall of the spray pipe is fixedly connected to a number of equally distributed downward-inclined nozzles. The spray pipe is connected to a water pump through a pipeline. When cleaning the smoke and dust on the surface of the electrostatic precipitator 63, the water pump is operated to draw liquid into the spray pipe, and the nozzle sprays out to contact the smoke and dust for dust removal.

[0038] Through the use of wires by those skilled in the art, all electrical components in this case are connected to their corresponding power supplies, and appropriate controllers should be selected according to actual conditions to electrically connect the electric push rod 64, the electrostatic precipitator 63 and the air supply fan to meet the control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical connections between the electrical components are completed in the order of working. The detailed connection means are well known in the art. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0039] Working principle: During use, the flue gas enters the desulfurization liquid through the inlet pipe 21 and the extension pipe 22, enabling the flue gas to come into full contact with the desulfurization liquid, thereby comprehensively removing sulfur dioxide in the flue gas, making the desulfurization more thorough. Moreover, some dust will be mixed with the desulfurization liquid and precipitated for collection. Since foam will be generated when the flue gas flows upward and the foam will carry a certain amount of dust, the rotation of the impeller 23 driven by the flow of the flue gas drives the extension pipe 22 to rotate. At the same time, the buoyancy plate 24 drives the crushing plate 25 to always float on the surface of the desulfurization liquid, so that the crushing plate 25 rotates with the extension pipe 22 to break the foam on the surface of the desulfurization liquid, improving the collection effect of the dust.

[0040] After the flue gas is desulfurized, it flows upward, and the dust in the flue gas is removed by the electrostatic precipitator 63. When the electrostatic precipitator 63 needs to be overhauled or cleaned, the electric push rod 64 is operated to drive the sealing plate 62 to slide outwards, driving the electrostatic precipitator 63 out of the desulfurization and dust removal tower 1 for convenient overhaul. And when the electrostatic precipitator 63 moves, the dust on the surface of the electrostatic precipitator 63 can be scraped off by the scraper 65 to achieve automatic cleaning.

[0041] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0042] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A wet electrostatic desulfurization and dust removal device, comprising a desulfurization and dust removal tower (1), characterized in that: Inside the desulfurization and dust removal tower (1), a desulfurization chamber and a dust removal chamber are sequentially arranged from top to bottom. Desulfurization liquid is added inside the desulfurization chamber. A desulfurization component (2) is installed on the desulfurization chamber. The desulfurization component (2) includes an air inlet pipe (21). The air inlet pipe (21) is fixedly installed on the lower side wall of the desulfurization and dust removal tower (1). The bottom end of the air inlet pipe (21) is rotatably connected to an extension pipe (22). An impeller (23) is fixedly connected above the inside of the extension pipe (22). A buoyancy plate (24) is slidably connected to the outer wall of the extension pipe (22). A plurality of crushing plates (25) are fixedly connected to the side wall of the buoyancy plate (24).

2. The wet electrostatic desulfurization and dust removal device according to claim 1, characterized in that: The upper and lower sides of the side wall of the desulfurization and dust removal tower (1) are respectively installed with a liquid inlet end (3) and a liquid outlet end (4). Valves are respectively installed on the liquid inlet end (3) and the liquid outlet end (4).

3. The wet electrostatic desulfurization and dust removal device according to claim 1, characterized in that: The lower side wall of the extension pipe (22) is rotatably connected to an annular support frame (26), and the support frame (26) is fixedly connected to the desulfurization and dust removal tower (1).

4. The wet electrostatic desulfurization and dust removal device according to claim 1, wherein: A gas supply fan is fixedly connected inside the air inlet pipe (21).

5. The wet electrostatic desulfurization and dust removal device according to claim 1, wherein: A liquid level sensor (5) is fixedly connected inside the desulfurization and dust removal tower (1). The liquid level sensor (5) is electrically connected to a warning device.

6. The wet electrostatic desulfurization and dust removal device according to claim 1, characterized in that: A dust removal component (6) is installed inside the dust removal chamber. The dust removal component (6) includes a slot (61). The slot (61) is opened on the upper side wall of the desulfurization and dust removal tower (1).

7. The wet electrostatic desulfurization and dust removal device according to claim 6, characterized in that: The dust removal component (6) further includes a sealing plate (62). A plurality of electrostatic precipitators (63) are fixedly connected to the surface of the sealing plate (62).

8. The wet electrostatic desulfurization and dust removal device according to claim 7, wherein: The dust removal component (6) further includes two electric push rods (64). The electric push rods (64) are fixedly installed on the upper side wall of the desulfurization and dust removal tower (1), and the driving ends of the electric push rods (64) are fixedly connected to the sealing plate (62).

9. The wet electrostatic desulfurization and dust removal device according to claim 7, characterized in that: The dust removal component (6) further includes a scraper (65). The scraper (65) is fixedly installed inside the slot (61). A cleaning port for the electrostatic precipitator (63) to pass through is opened on the surface of the scraper (65).

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