Flue gas desulfurization and denitrification device

Abstract

The utility model relates to industrial flue gas emission technical field, a kind of flue gas desulfurization and denitrification device, including inlet fan and the dust fall box being communicated with its one side by pipeline, further include: install in the dust fall mechanism of dust fall box one side to the dust in flue gas is handled, the side of dust fall box is communicated with flue gas total air inlet pipe;The utility model is provided with dust fall mechanism, dust fall mechanism can rotate evenly water spraying to the flue gas in dust fall box, can reduce the dust particle of flue gas, prevent dust particle influence subsequent desulfurization and denitrification processing, prevent dust discharge simultaneously to cause influence to environment, improve the practicality of device, by the setting of processing mechanism, flue gas can be desulfurized and denitrified, prevent directly discharging to cause serious influence to air quality, prevent directly discharging to cause influence to health, prevent simultaneously to cause negative influence to ecological system and water body, improve environmental protection effect, satisfy the demand of user.

Description

Technical Field

[0001] This utility model relates to the field of industrial flue gas emission technology, specifically to a flue gas desulfurization and denitrification device. Background Technology

[0002] In recent years, the rapid development of the world economy has driven the continuous increase in industrial levels, resulting in a continuous increase in industrial flue gas emissions and increasingly serious environmental problems such as air pollution.

[0003] Existing flue gas desulfurization and denitrification devices lack mechanisms for dust removal, desulfurization, and denitrification of industrial flue gas. They also lack mechanisms for comparing and analyzing emission risks by obtaining particulate matter concentrations, toxic gas concentrations, and industrial flue gas volumetric flow rates against emission standards. Directly releasing industrial flue gas into the atmosphere, which contains particulate matter, sulfur dioxide, and nitrogen oxides, severely impacts air quality. These particulate matter and toxic gases are not only harmful to human health but also negatively affect ecosystems and water bodies. Therefore, efforts are needed to reduce the environmental pollution caused by industrial flue gas emissions. Utility Model Content

[0004] The purpose of this invention is to provide a flue gas desulfurization and denitrification device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flue gas desulfurization and denitrification device, comprising an intake fan and a dust settling box connected to one side of the fan via a pipe, and further comprising: A dust collection mechanism is installed on one side of the dust collection box to treat dust in the flue gas. The dust collection box is connected to a main flue gas inlet pipe on one side, and the treatment mechanism is installed on one side of the main flue gas inlet pipe. A main flue gas outlet pipe is connected to one side of the processing unit. An exhaust fan is connected to one side of the main flue gas outlet pipe, and a chimney is connected to one side of the exhaust fan via a pipe.

[0006] Preferably, the dust suppression mechanism includes a water pump fixedly installed on one side of the dust suppression box. The top of the water pump is connected to a main water pipe, and the bottom of the main water pipe is connected to a plurality of spray main pipes. The bottom of the spray main pipes is fixedly connected to a bearing, and the inner surface of the bearings is rotatably connected to spray branch pipes. The bottom of the spray branch pipes is provided with a plurality of spray holes, and the bottom of the spray main pipes is connected to the top of the spray branch pipes.

[0007] Preferably, the processing mechanism includes a flue gas branch pipe connected to the other side of the main flue gas inlet pipe. The outer surface of the flue gas branch pipe is equipped with a plurality of desulfurization inlet valves, a plurality of first desulfurization flanges, a plurality of desulfurization filter screens, a plurality of second desulfurization flanges, a plurality of desulfurization detectors, a plurality of desulfurization outlet valves, a plurality of first denitrification flanges, a plurality of denitrification filter screens, a plurality of second denitrification flanges, a plurality of denitrification detectors, and a plurality of denitrification valves.

[0008] Preferably, the screens of the desulfurization filter and the denitrification filter have mesh sizes of [number] meshes and [number] meshes respectively, from the direction of the air inlet.

[0009] Preferably, both the desulfurization filter and the first denitrification flange are composed of multiple layers of screens, and each screen has an interlayer in between.

[0010] Preferably, the interlayer of the desulfurization filter contains calcium oxide, and the interlayer of the first denitrification flange contains ammonia.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, through the inclusion of a dust suppression mechanism, can evenly spray water onto the flue gas inside the dust suppression chamber, reducing dust particles in the flue gas and preventing them from affecting subsequent desulfurization and denitrification treatments. It also prevents dust emissions from impacting the environment, thus improving the practicality of the device. Furthermore, the treatment mechanism allows for desulfurization and denitrification of the flue gas, preventing direct emissions from severely impacting air quality and human health, while also preventing negative impacts on ecosystems and water bodies, thereby enhancing environmental protection and meeting user needs. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram from another perspective of the present invention; Figure 3 This utility model Figure 2 A partial three-dimensional structural sectional view; Figure 4 This is a partial three-dimensional structural cross-sectional view from another perspective of the present invention.

[0013] In the diagram: 1. Inlet fan; 2. Dust collection box; 3. Dust collection mechanism; 301. Water pump; 302. Main water pipe; 303. Spray main pipe; 304. Bearing; 305. Spray branch pipe; 306. Spray hole; 4. Main flue gas inlet pipe; 5. Treatment mechanism; 501. Flue gas branch pipe; 502. Desulfurization inlet valve; 503. First desulfurization flange; 504. Desulfurization filter; 505. Second desulfurization flange; 506. Desulfurization detector; 507. Desulfurization outlet valve; 508. First denitrification flange; 509. Denitrification filter; 510. Second denitrification flange; 511. Denitrification detector; 512. Denitrification valve; 6. Main flue gas outlet pipe; 7. Outlet fan; 8. Chimney. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0015] Please see Figure 1-4 As shown, a flue gas desulfurization and denitrification device includes an intake fan 1. One side of the intake fan 1 is connected to a dust collection box 2 via a pipe. The intake fan 1 enhances the flue gas velocity and pressure. The other side of the intake fan 1 is connected to a flue gas duct. A dust collection mechanism 3 is installed on one side of the dust collection box 2 to treat dust in the flue gas. The dust collection mechanism 3 can rotate and evenly spray water onto the flue gas inside the dust collection box 2, reducing dust particles in the flue gas and preventing dust particles from affecting subsequent desulfurization and denitrification treatments. It also prevents dust discharge from impacting the environment. One side of the dust collection box 2 is connected to a main flue gas inlet pipe 4. A treatment mechanism 5 is installed on one side of the main flue gas inlet pipe 4. Through the treatment mechanism 5, the flue gas entering the main flue gas can be treated... The system undergoes desulfurization and denitrification treatment to prevent direct emissions from severely impacting air quality and human health, while also preventing negative impacts on the ecosystem and water bodies, thus improving environmental protection. One side of the treatment unit 5 is connected to the main flue gas outlet pipe 6, and another side of the main flue gas outlet pipe 6 is connected to the exhaust fan 7. The exhaust fan 7 is connected to the chimney 8 via a pipe. The inlet fan 1 and the exhaust fan 7 are converter exhaust fans, which can draw in flue gas containing dust. After the flue gas is collected in the main flue gas outlet pipe 6, it is discharged from the chimney 8 through the exhaust fan 7. The exhaust fan 7 can increase the wind speed and wind pressure of the flue gas, enabling the flue gas to overcome the resistance of passing through the dust settling box 2.

[0016] The dust suppression mechanism 3 includes a water pump 301 fixedly installed on one side of the dust suppression box 2. A main water pipe 302 is connected to the top of the water pump 301, and several spray main pipes 303 are connected to the bottom of the main water pipe 302. A bearing 304 is fixedly connected to the bottom of each spray main pipe 303, and a spray branch pipe 305 is rotatably connected to the inner surface of the bearing 304. Several spray holes 306 are opened at the bottom of each spray branch pipe 305. The bottom of the spray main pipe 303 is connected to the top of the spray branch pipes 305. Through the dust suppression mechanism 3, the water pump 301 suppresses dust. Water from the clean water zone at the bottom of the dust settling box 2 is transported to the top of the dust settling box 2 through the main water pipe 302. The water flows from the main water pipe 302 into the spray main pipe 303 and then into the spray branch pipe 305, and is sprayed out from the spray hole 306. Due to the bearing 304, the spray main pipe 303 and the spray branch pipe 305 can rotate freely. The horizontal counterforce of the water sprayed through the spray hole 306 allows the spray main pipe 303 and the spray branch pipe 305 to rotate on their own, achieving the purpose of uniform material distribution. The water in the dust settling box 2 can be recycled, which can reduce the dust particles in the flue gas.

[0017] The processing unit 5 includes a flue gas branch pipe 501 connected to the other side of the main flue gas inlet pipe 4. Several desulfurization inlet valves 502 are installed on the outer surface of the flue gas branch pipe 501. Several first desulfurization flanges 503 are installed on the outer surface of the flue gas branch pipe 501. Several desulfurization filters 504 are installed on the inner surface of the flue gas branch pipe 501. Several second desulfurization flanges 505 are installed on the outer surface of the flue gas branch pipe 501. Several desulfurization detectors 506 are installed on the outer surface of the flue gas branch pipe 501. Several desulfurization outlet valves 507 are installed on the outer surface of the flue gas branch pipe 501. Several first denitrification flanges 508 are installed on the outer surface of the flue gas branch pipe 501. Several denitrification filters 509 are installed on the inner surface of the flue gas branch pipe 501. The outer surface of the flue gas branch pipe 501... Several second denitrification flanges 510 are installed on the surface of the flue gas distribution pipe 501. Several denitrification detectors 511 and several denitrification valves 512 are installed on the outer surface of the flue gas distribution pipe 501. The interlayer of the desulfurization filter screen 504 contains calcium oxide, and the interlayer of the first denitrification flange 508 contains ammonia. Both the desulfurization filter screen 504 and the first denitrification flange 508 are composed of multiple layers of screens, with interlayers in the middle of each screen. The screens of the desulfurization filter screen 504 and the denitrification filter screen 509 have 300 mesh, 400 mesh, and 500 mesh openings respectively from the air inlet direction. After the dust is treated by the set processing mechanism 5, the flue gas containing moisture passes through the desulfurization filter screen 504. The sulfur dioxide and water in the flue gas react with the calcium oxide in the desulfurization filter screen 504 to generate sulfur dioxide. Calcium carbonate removes sulfur dioxide from flue gas. When flue gas containing moisture passes through the denitrification filter 509, the nitrogen oxides in the flue gas react with the ammonia in the denitrification filter 509, removing the nitrogen oxides. During operation, desulfurization detectors 506 and 511 monitor the sulfur and nitrate content in the flue gas in real time. Under normal operation, the values ​​checked by desulfurization detectors 506 and 511 are within the specified range. When the values ​​exceed the limit, the desulfurization inlet valve 502 and desulfurization outlet valve 507 are closed, the first desulfurization flange 503 and the second desulfurization flange 505 are disassembled, a new desulfurization filter 504 is replaced, the first desulfurization flange 503 and the second desulfurization flange 505 are installed, and then the desulfurization inlet valve 502 and the desulfurization outlet valve are opened again. When the nitrate level exceeds the limit, valve 507 closes the desulfurization outlet valve 507 and the denitrification valve 512. The first denitrification flange 508 and the second denitrification flange 510 are disassembled, and a new denitrification filter screen 509 is replaced. The first denitrification flange 508 and the second denitrification flange 510 are then reinstalled. The desulfurization outlet valve 507 and the denitrification valve 512 are then opened. The desulfurization filter screen 504 and the first denitrification flange 508 are composed of multiple layers of screens with interlayers, which improves the filtration effect and effectively prevents substandard treatment. The desulfurization filter screen 504 and the denitrification filter screen 509 have mesh sizes of 300 mesh, 400 mesh, and 500 mesh respectively. As the flue gas passes through the gradually decreasing mesh size of the filter screen...This increases the contact area of ​​the reaction, thereby improving the desulfurization and denitrification effects.

[0018] It is worth noting that the technical features proposed in this technical solution, such as the desulfurization filter 504, desulfurization detector 506, denitrification filter 509, and denitrification detector 511, should be considered prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be achieved using conventional methods in the field, and this technical solution will not elaborate further. Working Principle: During operation, after the flue gas enters the flue gas duct, the airflow velocity and pressure are enhanced by the intake fan 1. The flue gas then enters the dust settling box 2. The water pump 301 transports water from the clean water zone at the bottom of the dust settling box 2 to the top of the dust settling box 2 through the main water pipe 302. The water from the main water pipe 302 flows into the spray main pipe 303 and then into the spray branch pipes 305, and is sprayed out from the spray holes 306. Due to the bearing 304, the spray main pipe 303 and the spray branch pipes 305 can rotate freely. The horizontal counterforce of the water sprayed through the spray holes 306 allows the spray main pipe 303 and the spray branch pipes 305 to rotate on their own, achieving the purpose of uniform material distribution. The water in the dust settling box 2 can be recycled, which can reduce the dust in the flue gas. The dust collection chamber 2 has a low inlet and high outlet, further reducing the dust content in the flue gas. However, the flue gas exiting the dust collection chamber 2 contains moisture. This moisture-containing flue gas enters the main flue gas inlet pipe 4 and then the flue gas branch pipe 501. In the flue gas branch pipe 501, it sequentially passes through the following components: flue gas branch pipe 501, desulfurization inlet valve 502, first desulfurization flange 503, desulfurization filter 504, second desulfurization flange 505, desulfurization detector 506, desulfurization outlet valve 507, first denitrification flange 508, denitrification filter 509, second denitrification flange 510, denitrification detector 511, and denitrification valve 512. When the moisture-containing flue gas passes through the desulfurization filter 504, the sulfur dioxide and water in the flue gas react with the desulfurization filter... The calcium oxide in filter 504 reacts to form calcium sulfate, removing sulfur dioxide from the flue gas. When the flue gas containing moisture passes through the denitrification filter 509, the nitrogen oxides in the flue gas react with the ammonia in the denitrification filter 509, removing the nitrogen oxides. Then, the flue gas is collected in the main flue gas outlet pipe 6 and discharged from the chimney 8 through the exhaust fan 7. The exhaust fan 7 can increase the wind speed and wind pressure of the flue gas, enabling the flue gas to overcome the resistance of passing through the dust settling box 2 and the flue gas distribution pipe 501. When the equipment is running, the desulfurization detector 506 and the denitrification detector 511 monitor the sulfur and nitrate content in the flue gas in real time. During normal operation, the values ​​checked by the desulfurization detector 506 and the denitrification detector 511 are within the specified range. When the desulfurization value exceeds the limit, close the desulfurization inlet valve 502 and the desulfurization outlet valve 507, disassemble the first desulfurization flange 503 and the second desulfurization flange 505, replace the new desulfurization filter screen 504, install the first desulfurization flange 503 and the second desulfurization flange 505, and then open the desulfurization inlet valve 502 and the desulfurization outlet valve 507. When the denitrification value exceeds the limit, close the desulfurization outlet valve 507 and the denitrification valve 512, disassemble the first denitrification flange 508 and the second denitrification flange 510, replace the new denitrification filter screen 509, install the first denitrification flange 508 and the second denitrification flange 510, and then open the desulfurization outlet valve 507 and the denitrification valve 512.

[0019] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A flue gas desulfurization and denitrification device, comprising an intake fan (1) and a dust settling box (2) connected to one side of the fan via a pipe, characterized in that, Also includes: A dust removal mechanism (3) is installed on one side of the dust removal box (2) to treat dust in the flue gas. The dust removal box (2) is connected to a flue gas main inlet pipe (4) on one side. A treatment mechanism (5) is installed on one side of the flue gas main inlet pipe (4). A flue gas main outlet pipe (6) is connected to one side of the processing unit (5). A blower (7) is connected to one side of the flue gas main outlet pipe (6). A chimney (8) is connected to one side of the blower (7) through a pipe.

2. The flue gas desulfurization and denitrification device according to claim 1, characterized in that: The dust suppression mechanism (3) includes a water pump (301) fixedly installed on one side of the dust suppression box (2). The top of the water pump (301) is connected to a main water pipe (302). The bottom of the main water pipe (302) is connected to several spray main pipes (303). The bottom of the spray main pipe (303) is fixedly connected to a bearing (304). The inner surface of the bearing (304) is rotatably connected to a spray branch pipe (305). The bottom of the spray branch pipe (305) is provided with several spray holes (306). The bottom of the spray main pipe (303) is connected to the top of the spray branch pipe (305).

3. The flue gas desulfurization and denitrification device according to claim 1, characterized in that: The processing mechanism (5) includes a flue gas branch pipe (501) connected to the other side of the main flue gas inlet pipe (4). Several desulfurization inlet valves (502) are installed on the outer surface of the flue gas branch pipe (501). Several first desulfurization flanges (503) are installed on the outer surface of the flue gas branch pipe (501). Several desulfurization filters (504) are installed on the inner surface of the flue gas branch pipe (501). Several second desulfurization flanges (505) are installed on the outer surface of the flue gas branch pipe (501). Several desulfurization detectors (504) are installed on the outer surface of the flue gas branch pipe (501). 6) Several desulfurization outlet valves (507) are installed on the outer surface of the flue gas branch pipe (501), several first denitrification flanges (508) are installed on the outer surface of the flue gas branch pipe (501), several denitrification filters (509) are installed on the inner surface of the flue gas branch pipe (501), several second denitrification flanges (510) are installed on the outer surface of the flue gas branch pipe (501), several denitrification detectors (511) are installed on the outer surface of the flue gas branch pipe (501), and several denitrification valves (512) are installed on the outer surface of the flue gas branch pipe (501).

4. The flue gas desulfurization and denitrification device according to claim 3, characterized in that: The screens of the desulfurization filter (504) and the denitrification filter (509) have sieve openings of 300 mesh, 400 mesh and 500 mesh respectively from the air inlet direction.

5. The flue gas desulfurization and denitrification device according to claim 3, characterized in that: Both the desulfurization filter (504) and the first denitrification flange (508) are composed of multiple layers of screens, and there is a sandwich layer in the middle of the screens.

6. The flue gas desulfurization and denitrification device according to claim 5, characterized in that: The desulfurization filter (504) has a layer containing calcium oxide, and the first denitrification flange (508) has a layer containing ammonia.

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