Flue gas desulfurization device for gas-fired boiler

Abstract

The utility model discloses a gas-fired boiler flue gas desulfurization device, which belongs to the technical field of boiler flue gas desulfurization, and comprises an arc-shaped box body, a separation and purification assembly, a first supporting plate, a second supporting plate, a gas-fired boiler flue gas desulfurization assembly, a gas-fired boiler flue gas desulfurization assembly and a gas-fired boiler flue gas desulfurization assembly, the separation and purification assembly comprises a spiral body fixedly connected to the inner wall of the arc-shaped box body, the outer wall of the spiral body is fixedly connected with separation plates which are uniformly distributed and are different in size, slurry bins are arranged among the separation plates, the spiral body and the arc-shaped box body, and atomization bins are further arranged among the separation plates, the spiral body and the arc-shaped box body; according to the utility model, the exhaust fan is used for extracting flue gas in the atomization bin through the exhaust pipe and enabling the flue gas to enter the slurry bin through the exhaust pipe, so that circulating purification is realized, partial flue gas is prevented from reacting and desulfurizing incompletely, and the flue gas purification and desulfurization effects are enhanced; the problem that in the prior art, a circulating purification structure is lacked, and the purification effect is not thorough is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler flue gas desulfurization, in particular to a flue gas desulfurization device for a gas boiler. Background Art

[0002] Gas boiler flue gas refers to the flue gas produced when a gas boiler burns fuel. Gas boilers generate heat energy by burning fuels such as natural gas, and flue gas is produced during the combustion process. Gas boiler flue gas contains sulfides such as sulfur dioxide, which are harmful gases to the environment and human health. Therefore, in order to reduce the pollution of sulfides emitted by gas boilers to the environment, it is necessary to desulfurize the flue gas of gas boilers.

[0003] After searching, the Chinese patent authorization number CN215996196U discloses a flue gas desulfurization device for a gas boiler, including a box body, a filter box, a slurry box, an absorbent box, a mist box and a drying box. The slurry box is provided with a box body bottom, the filter box is arranged on the upper wall of the box body above the slurry box, the drying box is arranged in the box body away from one end of the slurry box, the mist box is arranged at the bottom of the box body between the slurry box and the drying box, the absorbent box is arranged above the mist box, the filter box is provided with a filter net, a filter tube and a purification tube, the filter net is arranged in the filter box, the purification tube is connected between the bottom wall of the filter box and the slurry box, and the filter tube is connected on the filter box. A flue gas desulfurization device for a gas boiler in the above patent has the following deficiencies: 1. The device is arranged horizontally, and its flue gas mostly flows upward due to gravity. Due to limited space in its slurry box and atomization box, when there is a lot of flue gas, it will be retained on the top of the box, and the flow purification process is slow; 2. Due to the large amount of flue gas, the flue gas may flow directly into the next box without reaction and desulfurization when it is squeezed out from each other. There is a lack of a circulation purification structure, and the purification effect is not thorough. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that when there is a lot of flue gas, it will be retained on the top of the box, the flow purification process is slow and the purification effect is not thorough due to the lack of a circulating purification structure, and proposes a gas boiler flue gas desulfurization device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A flue gas desulfurization device for a gas boiler comprises an arc-shaped box body, an outer wall of the arc-shaped box body is fixedly connected to a first support plate, and an outer wall of the arc-shaped box body is also fixedly connected to a second support plate, and further comprises:

[0007] A partition purification component, the partition purification component includes a spiral body fixedly connected to the inner wall of the arc-shaped box, the outer wall of the spiral body is fixedly connected with a partition plate of uniform distribution and different sizes, a slurry bin is arranged between the partition plate, the spiral body and the arc-shaped box, an atomization bin is also arranged between the partition plate, the spiral body and the arc-shaped box, a heating bin is also arranged between the partition plate, the spiral body and the arc-shaped box, an activated carbon plate is fixedly connected to the inner wall of the spiral body, a heating plate is also fixedly connected to the inner wall of the spiral body, and the heating plate and the activated carbon plate are both located inside the heating bin, the outer wall of the heating plate is fixedly connected with symmetrically distributed heat-conducting rods, and the end of the heat-conducting rod away from the heating plate is fixedly connected with a perforated copper plate;

[0008] A filter box is fixedly connected to the top wall of the second support plate, the smoke inlet of the filter box is fixedly connected to a smoke inlet pipe, the smoke outlet of the filter box is fixedly connected to a purification pipe, one end of the purification pipe away from the smoke outlet of the filter box is fixedly connected to the arc-shaped box body, and the purification pipe is located inside the slurry bin;

[0009] The circulation purification component is arranged on the outer wall of the arc-shaped box.

[0010] As a preferred technical solution of the present application, the circulation purification component includes a side mounting plate fixedly connected to the outer wall of the arc-shaped box body, the end of the side mounting plate away from the arc-shaped box body is detachably connected to an exhaust fan, the exhaust fan air inlet is fixedly connected to an exhaust duct, the exhaust fan air outlet is fixedly connected to an exhaust duct, and the end of the exhaust duct away from the exhaust fan outlet is fixedly connected to the inner wall of the arc-shaped box body, and the exhaust duct is located inside the slurry bin.

[0011] As a preferred technical solution of the present application, the outer wall of the arc-shaped box body is fixedly connected to an atomizing motor, the air inlet of the atomizing motor is fixedly connected to an absorbent box, and the absorbent box is fixedly connected to the first support plate, and the air outlet of the atomizing motor is fixedly connected to a mist exhaust pipe.

[0012] As the preferred technical solution of the present application, one end of the exhaust pipe away from the air outlet of the atomizing motor and one end of the exhaust pipe away from the air outlet of the exhaust fan are both fixedly connected with an atomizing distribution disk, and the atomizing distribution disk is fixedly connected to the spiral body and the inner wall of the arc-shaped box, and the atomizing distribution disk is located inside the atomizing bin.

[0013] As a preferred technical solution of the present application, a cross connecting plate is fixedly connected to the inner wall of the arc-shaped box, and an electric fan is fixedly connected to the inner wall of the cross connecting plate.

[0014] Compared with the prior art, the utility model provides a gas boiler flue gas desulfurization device, which has the following beneficial effects:

[0015] 1. The flue gas desulfurization device for gas boilers divides the arc-shaped box into a slurry bin, an atomization bin and a heating bin by means of a spiral body and partition plates of different sizes. The overall structure is arranged vertically, so that the flue gas can react upward freely, and each reaction bin is divided into multiple parts by a spiral body to prevent the flue gas from being crowded, so that the reactants in each reaction bin can react with the flue gas for desulfurization, thus accelerating the reaction process, and solving the problem in the prior art that when there is a lot of flue gas, the flue gas will be retained at the top of the box, and the flow purification process will be slow;

[0016] 2. The gas boiler flue gas desulfurization device uses an exhaust fan to extract the flue gas in the atomization bin through an exhaust pipe and enter the slurry bin through the exhaust pipe, thereby realizing circulation purification, preventing incomplete desulfurization of part of the flue gas reaction, and enhancing the flue gas purification and desulfurization effect, solving the problem of incomplete purification effect due to the lack of circulation purification structure in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the arc-shaped box body of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the atomizing motor part of the utility model;

[0020] Figure 4 It is a partial structural schematic diagram of the exhaust fan of the utility model;

[0021] Figure 5 It is a partial structural schematic diagram of the electric fan of the utility model.

[0022] In the figure:

[0023] 1. Arc-shaped box; 2. Atomizing motor; 3. First support plate; 4. Absorbent box; 5. Exhaust pipe; 6. Side mounting plate; 7. Second support plate; 8. Filter box; 9. Smoke inlet pipe; 10. Purification pipe; 11. Spiral; 12. Slurry bin; 13. Atomizing bin; 14. Heating bin; 15. Activated carbon plate; 16. Heating plate; 17. Heat-conducting rod; 18. Perforated copper plate; 19. Cross connecting plate; 20. Atomizing and distributing disk; 21. Exhaust fan; 22. Exhaust pipe; 23. Exhaust pipe; 24. Electric fan; 25. Partition plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model. Example

[0025] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A flue gas desulfurization device for a gas boiler includes an arc-shaped box body 1, a first support plate 3 is fixedly connected to the outer wall of the arc-shaped box body 1, and the first support plate 3 is conveniently used to provide support force for the absorbent box 4 to enhance stability. The outer wall of the arc-shaped box body 1 is also fixedly connected to a second support plate 7, and the second support plate 7 is used to provide support force for the filter box 8 to enhance stability. It also includes:

[0026] The separation and purification component includes a spiral body 11 fixedly connected to the inner wall of the arc-shaped box body 1, and the outer wall of the spiral body 11 is fixedly connected with a partition plate 25 of uniform distribution and different sizes. A slurry bin 12 is arranged between the partition plate 25, the spiral body 11 and the arc-shaped box body 1. Liquefied gypsum is added to the slurry bin 12 to react with sulfur dioxide in the flue gas for desulfurization. An atomization bin 13 is also arranged between the partition plate 25, the spiral body 11 and the arc-shaped box body 1, and a heating bin 14 is also arranged between the partition plate 25, the spiral body 11 and the arc-shaped box body 1. The inner wall of the spiral body 11 is provided with a slurry bin 12. The slurry bin 12 is provided with a slurry bin 12. The slurry bin 12 is provided with a slurry bin 13 ... An activated carbon plate 15 is fixedly connected, and harmful substances in the flue gas are adsorbed by the activated carbon plate 15. A heating plate 16 is also fixedly connected to the inner wall of the spiral body 11, and the heating plate 16 and the activated carbon plate 15 are both located inside the heating chamber 14. The outer wall of the heating plate 16 is fixedly connected to symmetrically distributed heat-conducting rods 17, and one end of the heat-conducting rod 17 away from the heating plate 16 is fixedly connected to a perforated copper plate 18, which is heated by the heating plate 16 and conducts heat to the perforated copper plate 18 through the heat-conducting rod 17 to expand the contact area with the flue gas, thereby facilitating heating and drying of the purified flue gas;

[0027] The filter box 8 is fixedly connected to the top wall of the second support plate 7, the smoke inlet of the filter box 8 is fixedly connected to the smoke inlet pipe 9, the smoke outlet of the filter box 8 is fixedly connected to the purification pipe 10, the end of the purification pipe 10 away from the smoke outlet of the filter box 8 is fixedly connected to the arc-shaped box body 1, and the purification pipe 10 is located inside the slurry bin 12;

[0028] The circulation purification component is arranged on the outer wall of the arc-shaped box body 1.

[0029] Reference Figure 1 and Figure 4The circulation purification component includes a side mounting plate 6 fixedly connected to the outer wall of the arc-shaped box body 1, and the end of the side mounting plate 6 away from the arc-shaped box body 1 is detachably connected to the exhaust fan 21, the air inlet of the exhaust fan 21 is fixedly connected to the exhaust pipe 22, the air outlet of the exhaust fan 21 is fixedly connected to the exhaust pipe 23, and the end of the exhaust pipe 23 away from the air outlet of the exhaust fan 21 is fixedly connected to the inner wall of the arc-shaped box body 1, and the exhaust pipe 23 is located inside the slurry bin 12. Part of the flue gas will be drawn in by the exhaust fan 21 through the atomizing distribution disk 20 on the exhaust pipe 22, and will be re-discharged into the slurry bin 12 through the exhaust pipe 23 for circulation reaction, so as to prevent the discharge of flue gas that has not been completely reacted and purified.

[0030] Reference Figure 1 , Figure 2 and Figure 3 The outer wall of the arc-shaped box body 1 is fixedly connected with an atomizing motor 2, the air inlet of the atomizing motor 2 is fixedly connected with an absorbent box 4, and the absorbent box 4 is fixedly connected to the first support plate 3, and the air outlet of the atomizing motor 2 is fixedly connected with a mist exhaust pipe 5. Slaked lime milk is added into the absorbent box 4 and the slaked lime milk is extracted and atomized through the atomizing motor 2, so as to react with sulfur dioxide for desulfurization.

[0031] Reference Figure 2 One end of the exhaust pipe 5 away from the air outlet of the atomizing motor 2 and one end of the exhaust pipe 22 away from the air outlet of the exhaust fan 21 are both fixedly connected with an atomizing distribution plate 20, and the atomizing distribution plate 20 is fixedly connected to the spiral body 11 and the inner wall of the arc-shaped box body 1. The atomizing distribution plate 20 is located inside the atomizing bin 13, and the atomizing distribution plate 20 is used to facilitate the demisting desulfurization and extraction circulation purification treatment.

[0032] Reference Figure 2 and Figure 5 A cross connecting plate 19 is fixedly connected to the inner wall of the arc-shaped box body 1, and an electric fan 24 is fixedly connected to the inner wall of the cross connecting plate 19. The electric fan 24 generates exhaust air to facilitate the upward movement of the flue gas and accelerate the reaction desulfurization process. The wind force is small to prevent incomplete flue gas purification.

[0033] Specifically, when the gas boiler flue gas desulfurization device is working / in use: first, liquefied gypsum is placed in the slurry bin 12, and slaked lime milk is added to the absorbent box 4, and then the flue gas is introduced into the filter box 8 through the smoke inlet pipe 9, and the flue gas is preliminarily filtered through the filter screen (not shown in the figure) in the filter box 8, mostly dust and impurities, and then the flue gas enters the slurry bin 12 through the purification pipe 10, and the sulfur dioxide in the flue gas reacts with the liquefied gypsum in the slurry bin 12 for preliminary purification, and then the flue gas is divided into multiple parts by the spiral body 11 and moves upward through each part and is counted into the atomization bin 13, and its atomization motor 2 extracts and atomizes the slaked lime milk in the absorbent box 4, and then is discharged into the atomization distribution plate 20 through the exhaust pipe 5, and is atomized by the atomization distribution plate 20. The emission plate 20 emits to each part of the spiral body 11, and the sulfur dioxide in the flue gas entering the atomization bin 13 reacts with the mist of slaked lime milk. At this time, part of the flue gas will be sucked in by the exhaust fan 21 through the atomization emission plate 20 on the exhaust pipe 22, and re-discharged into the slurry bin 12 through the exhaust pipe 23 for circulation reaction to prevent the discharge of flue gas that has not been completely reacted and purified. The flue gas is basically purified after the above steps, and then continues to move upward through the partition plate 25, and passes through the activated carbon plate 15 to adsorb harmful gases. It is then heated by the heating plate 16 and heat is conducted to the perforated copper plate 18 through the heat conducting rod 17 to expand the contact area with the flue gas, thereby facilitating the heating and drying treatment of the purified flue gas, and finally the purified and dried flue gas is discharged through the electric fan 24.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gas boiler flue gas desulfurization device, comprising an arc-shaped box (1), characterized in that: The outer wall of the arc-shaped box body (1) is fixedly connected to a first support plate (3), and the outer wall of the arc-shaped box body (1) is also fixedly connected to a second support plate (7), and further comprises: A partition purification component, the partition purification component comprising a spiral body (11) fixedly connected to the inner wall of an arc-shaped box body (1), the outer wall of the spiral body (11) being fixedly connected to a partition plate (25) of uniform distribution and different sizes, a slurry bin (12) being arranged between the partition plate (25) and the spiral body (11) and the arc-shaped box body (1), an atomization bin (13) being also arranged between the partition plate (25) and the spiral body (11) and the arc-shaped box body (1), and the partition plate (25) and the spiral body (11) A heating chamber (14) is also provided between the arc-shaped box body (1), an activated carbon plate (15) is fixedly connected to the inner wall of the spiral body (11), a heating plate (16) is also fixedly connected to the inner wall of the spiral body (11), and both the heating plate (16) and the activated carbon plate (15) are located inside the heating chamber (14), symmetrically distributed heat-conducting rods (17) are fixedly connected to the outer wall of the heating plate (16), and a perforated copper plate (18) is fixedly connected to one end of the heat-conducting rod (17) away from the heating plate (16); A filter box (8) is fixedly connected to the top wall of the second support plate (7); a smoke inlet of the filter box (8) is fixedly connected to a smoke inlet pipe (9); a smoke outlet of the filter box (8) is fixedly connected to a purification pipe (10); an end of the purification pipe (10) away from the smoke outlet of the filter box (8) is fixedly connected to the arc-shaped box body (1), and the purification pipe (10) is located inside the slurry bin (12); The circulation purification component is arranged on the outer wall of the arc-shaped box body (1).

2. A gas boiler flue gas desulfurization device according to claim 1, characterized in that: The circulation purification component comprises a side mounting plate (6) fixedly connected to the outer wall of the arc-shaped box body (1); an end of the side mounting plate (6) away from the arc-shaped box body (1) is detachably connected to an exhaust fan (21); an air inlet of the exhaust fan (21) is fixedly connected to an exhaust pipe (22); an air outlet of the exhaust fan (21) is fixedly connected to an exhaust pipe (23); and an end of the exhaust pipe (23) away from the air outlet of the exhaust fan (21) is fixedly connected to the inner wall of the arc-shaped box body (1); and the exhaust pipe (23) is located inside the slurry bin (12).

3. A gas boiler flue gas desulfurization device according to claim 1, characterized in that: The outer wall of the arc-shaped box body (1) is fixedly connected to an atomizing motor (2), an air inlet of the atomizing motor (2) is fixedly connected to an absorbent box (4), and the absorbent box (4) is fixedly connected to the first support plate (3), and an air outlet of the atomizing motor (2) is fixedly connected to a mist exhaust pipe (5).

4. A gas boiler flue gas desulfurization device according to claim 3, characterized in that: An end of the mist exhaust pipe (5) away from the air outlet of the atomizing motor (2) and an end of the exhaust pipe (22) away from the air outlet of the exhaust fan (21) are both fixedly connected to an atomizing distribution plate (20), and the atomizing distribution plate (20) is fixedly connected to the spiral body (11) and the inner wall of the arc-shaped box body (1), and the atomizing distribution plate (20) is located inside the atomizing bin (13).

5. A gas boiler flue gas desulfurization device according to claim 1, characterized in that: A cross connecting plate (19) is fixedly connected to the inner wall of the arc-shaped box body (1), and an electric fan (24) is fixedly connected to the inner wall of the cross connecting plate (19).

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