Dry flue gas desulfurization, denitrification and dust removal integrated device

Abstract

The utility model discloses a dry -type flue gas desulfurization and denitrification dust integrated device, including flue gas inlet pipe, one side fixed mounting of flue gas inlet pipe has the integrated processing box, the inside fixed mounting of integrated processing box has the baffle no.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically to an integrated dry flue gas desulfurization, denitrification and dust removal device. Background Technology

[0002] With economic and social development, people are paying more and more attention to their living environment, especially the requirements for atmospheric environment. Flue gas generated in industrial production is an important source of pollution. Before flue gas is emitted, it needs to be desulfurized, denitrified and dust removed to reduce pollution to the environment. For example, the patent with announcement number CN219482164U (a flue gas desulfurization, denitrification and dust removal device) includes a spray mixing box. A denitrification mechanism and a desulfurization mechanism are provided on one side of the spray mixing box. A drive mechanism capable of driving the flow of flue gas is provided at the top of the spray mixing box. The drive mechanism includes a drive box fixedly installed at the top of the spray mixing box. A motor that plays a driving role is fixedly installed on the front side of the drive box. While the aforementioned existing technologies are convenient for maintenance and replacement, they treat flue gas desulfurization, denitrification, and dust removal separately, lacking integrated processing capabilities. Consequently, in flue gas desulfurization, denitrification, and dust removal, the equipment occupies a large area, has high construction costs, and exhibits poor coordination between the various processing stages, which is not conducive to the centralized and efficient treatment of flue gas. Therefore, the market urgently needs to develop a dry flue gas desulfurization, denitrification, and dust removal integrated device to help people solve the existing problems. Utility Model Content

[0003] The purpose of this utility model is to provide an integrated dry flue gas desulfurization, denitrification and dust removal device to solve the problems mentioned in the background art, such as large equipment footprint, high construction cost, poor coordination between various treatment links, and difficulty in centralized and efficient treatment of flue gas.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dry flue gas desulfurization, denitrification, and dust removal integrated device, comprising a flue gas inlet pipe, an integrated treatment box fixedly installed on one side of the flue gas inlet pipe, a partition plate one fixedly installed inside the integrated treatment box, a filter box disposed between the partition plate one and the integrated treatment box, a partition plate two fixedly installed inside the integrated treatment box along one side of the partition plate one, a gas supply pipe fixedly installed between the partition plate one and the partition plate two, the two ends of the gas supply pipe respectively penetrating the partition plate one and the partition plate two, a desulfurization feed pipe fixedly installed above the integrated treatment box, a nozzle one fixedly installed inside the integrated treatment box along the lower part of the desulfurization feed pipe, the desulfurization feed pipe communicating with the nozzle one, a denitrification feed pipe fixedly installed above the integrated treatment box along one side of the desulfurization feed pipe, a nozzle two fixedly installed inside the integrated treatment box along the lower part of the denitrification feed pipe, the denitrification feed pipe communicating with the nozzle two, and a cleaning cover fixedly installed on the front end face of the integrated treatment box.

[0005] Preferably, a second guide plate is fixedly installed inside the integrated processing box, and a first guide plate is symmetrically fixedly installed on both sides of the second guide plate inside the integrated processing box. A stirring mechanism is provided on one side of both the first and second guide plates. The stirring mechanism includes a stirring shaft and stirring blades. Multiple sets of stirring blades are provided and fixedly installed on the outside of the stirring shaft. The lower end of the stirring shaft is rotatably connected to the integrated processing box.

[0006] Preferably, a motor cover is fixedly installed at the bottom of the integrated processing box, and an electric motor is installed inside the motor cover. The output shaft of the electric motor is fixedly connected to the stirring shaft.

[0007] Preferably, the front end of the filter box slides to the front end surface of the integrated processing box, a dust filter plate is fixedly installed inside the lower part of the filter box, and pads are symmetrically arranged on both sides below the filter box. The pad on the left side is fixedly connected to the partition, and the pad on the right side is fixedly connected to the integrated processing box.

[0008] Preferably, a side box is fixedly installed on one side of the integrated processing box, and the side box is connected to the integrated processing box. A horizontal plate is fixedly installed inside the side box, and a through hole is provided inside the horizontal plate. An annular mesh plate is fixedly installed below the horizontal plate along the lower part of the through hole. A dust filter bucket is fixedly installed on the outer side of the annular mesh plate. An exhaust pipe is fixedly installed on the top of the side box.

[0009] Preferably, a dust collection box is provided at the bottom inside the side box, the front end of the dust collection box slides to the front end surface of the side box, and a backflushing pipe is provided inside the annular mesh plate, the upper end of the backflushing pipe extends to the outside of the side box.

[0010] Preferably, the integrated processing box has a heating port on its rear end face, and there are multiple heating ports.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model integrates flue gas dust removal, desulfurization and denitrification functions through the setting of an integrated treatment box, effectively overcoming the disadvantages of traditional split treatment systems where equipment is scattered and occupies a large area. It not only simplifies the process flow but also improves the treatment efficiency. The overall structure is compact and reasonable, realizing efficient synergistic treatment and intensive treatment of multiple pollutants in flue gas, and increasing its practicality.

[0012] 2. This utility model, by setting up a stirring mechanism, which includes a stirring shaft and stirring blades, can stir the flue gas and reactants. This not only allows the limestone powder to be fully mixed with the flue gas, improving the desulfurization efficiency, but also allows the ammonia produced by the decomposition of urea powder to fully contact with nitrogen oxides, enhancing the denitrification effect and increasing the practicality and processing performance of the device.

[0013] 3. By setting up a side chamber and installing a dust filter bucket below the horizontal plate inside the side chamber, this utility model can filter and intercept the reaction particles after desulfurization and denitrification in the flue gas, thereby improving the cleanliness of the flue gas output and increasing its practicality. Attached Figure Description

[0014] Figure 1 This is a front view of an integrated dry flue gas desulfurization, denitrification, and dust removal device according to this utility model; Figure 2 This is a cross-sectional view of an integrated dry flue gas desulfurization, denitrification, and dust removal device according to the present invention. Figure 3 This is an enlarged schematic diagram of part A of this utility model; Figure 4 This is an enlarged schematic diagram of part B of this utility model.

[0015] In the diagram: 1. Flue gas inlet pipe; 2. Integrated treatment box; 201. Heating port; 3. Side box; 4. Motor cover; 5. Filter box; 501. Dust filter plate; 6. Desulfurization feed pipe; 601. Nozzle 1; 7. Denitrification feed pipe; 701. Nozzle 2; 8. Cleaning cover; 9. Exhaust pipe; 10. Dust collection box; 11. Backflush pipe; 12. Partition 1; 13. Gas transmission pipe; 14. Partition 2; 15. Guide plate 1; 16. Guide plate 2; 17. Agitator shaft; 18. Agitator blades; 19. Motor; 20. Horizontal plate; 21. Pad; 22. Dust filter bucket; 23. Annular mesh plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Please see Figure 1-4 This utility model provides an embodiment of a dry flue gas desulfurization, denitrification, and dust removal integrated device, comprising a flue gas inlet pipe 1, an integrated treatment box 2 fixedly installed on one side of the flue gas inlet pipe 1, a partition 12 fixedly installed inside the integrated treatment box 2, a filter box 5 disposed between the partition 12 and the integrated treatment box 2, a partition 24 fixedly installed inside the integrated treatment box 2 along one side of the partition 12, a gas supply pipe 13 fixedly installed between the partition 12 and the partition 24, with both ends of the gas supply pipe 13 penetrating the partition 12 and the partition 24 respectively, and a fixed top of the integrated treatment box 2. A desulfurization supply pipe 6 is fixedly installed, and the desulfurization supply pipe 6 is connected to a limestone powder supply device. Inside the integrated treatment box 2, a nozzle 601 is fixedly installed below the desulfurization supply pipe 6, and the desulfurization supply pipe 6 is connected to the nozzle 601. Above the integrated treatment box 2, a denitrification supply pipe 7 is fixedly installed along one side of the desulfurization supply pipe 6, and the denitrification supply pipe 7 is connected to a urea dry powder supply device. Inside the integrated treatment box 2, a nozzle 701 is fixedly installed below the denitrification supply pipe 7, and the denitrification supply pipe 7 is connected to the nozzle 701. A cleaning cover 8 is fixedly installed on the front end face of the integrated treatment box 2.

[0018] The dust removal, desulfurization, and denitrification functions are integrated into the integrated treatment box 2. After the flue gas enters the integrated treatment box 2 through the flue gas inlet pipe 1, it first flows through the filter box 5 to intercept and remove particulate matter in the flue gas, thus achieving the dust removal function. Then, the flue gas passes through the gas conveying pipe 13 and through the first partition 12 and the second partition 14. At this time, the desulfurization supply pipe 6 of the external limestone powder supply equipment delivers limestone powder to the first nozzle 601. The first nozzle 601 sprays the limestone powder into the flue gas. The sulfur dioxide in the flue gas reacts chemically with the limestone powder, thereby achieving the purpose of desulfurization. At the same time, the denitrification supply pipe 7 of the external urea dry powder supply equipment delivers urea dry powder to the second nozzle 701. The second nozzle 701 sprays the urea dry powder into the flue gas. The ammonia produced by the decomposition of urea at high temperature reacts with the nitrogen oxides in the flue gas to achieve denitrification treatment. The whole process is carried out in an orderly manner in the integrated treatment box 2. The various treatment links are closely connected and work together to achieve the integrated function of desulfurization, denitrification, and dust removal, which increases practicality.

[0019] Furthermore, a second guide plate 16 is fixedly installed inside the integrated processing box 2, and a first guide plate 15 is symmetrically fixedly installed on both sides of the second guide plate 16 inside the integrated processing box 2. An agitation mechanism is provided on one side of both the first guide plate 15 and the second guide plate 16. The agitation mechanism includes an agitation shaft 17 and agitation blades 18. Multiple sets of agitation blades 18 are provided and fixedly installed on the outside of the agitation shaft 17. The lower end of the agitation shaft 17 is rotatably connected to the integrated processing box 2. A motor cover 4 is fixedly installed below the integrated processing box 2. An electric motor 19 is installed inside the motor cover 4. The output shaft end of the electric motor 19 is fixedly connected to the agitation shaft 17.

[0020] The first guide plate 15 and the second guide plate 16 can guide the flue gas to flow along a specific path in the integrated treatment box 2, increasing the length of the flue gas flow path and ensuring that the desulfurization and denitrification treatment can be carried out comprehensively and stably. The agitation mechanism, driven by the motor 19 to rotate the agitation shaft 17, causes the agitation blades 18 to stir the flue gas and reactants. This not only allows the limestone powder to be fully mixed with the flue gas, increasing the reaction contact area and accelerating the chemical reaction rate between sulfur dioxide and limestone powder, thus improving the desulfurization efficiency, but also allows the ammonia produced by the decomposition of urea dry powder to fully contact with nitrogen oxides, promoting the reduction reaction, enhancing the denitrification effect, improving the uniformity and reaction efficiency of flue gas treatment, and improving the practicality and treatment performance of the device.

[0021] Furthermore, the front end of the filter box 5 slides to the front end surface of the integrated processing box 2. A dust filter plate 501 is fixedly installed inside the lower part of the filter box 5. Pads 21 are symmetrically arranged on both sides below the filter box 5. The pad 21 on the left side is fixedly connected to the partition plate 12, and the pad 21 on the right side is fixedly connected to the integrated processing box 2.

[0022] The front end of the filter box 5 slides to the front face of the integrated treatment box 2, allowing staff to easily pull out the filter box 5 for cleaning or replacement of the dust filter plate 501 without large-scale disassembly of the integrated treatment box 2. This greatly saves maintenance time and costs and improves the maintainability of the device. The dust filter plate 501 can effectively intercept particulate matter in the flue gas, achieve dust removal, ensure that the flue gas entering the subsequent desulfurization and denitrification stages is relatively clean, reduce the interference of particulate matter on the desulfurization and denitrification reaction, and improve the stability and reliability of the entire treatment system. The pads 21 on both sides provide stable support for the filter box 5.

[0023] Furthermore, a side box 3 is fixedly installed on one side of the integrated processing box 2, and the side box 3 is connected to the integrated processing box 2. A horizontal plate 20 is fixedly installed inside the side box 3. The horizontal plate 20 has through holes inside. An annular mesh plate 23 is fixedly installed below the horizontal plate 20 along the bottom of the through holes. A dust filter bucket 22 is fixedly installed on the outside of the annular mesh plate 23. The bottom of the dust filter bucket 22 is a sealing arc plate. The side of the dust filter bucket 22 adopts an annular dust filter plate. An exhaust pipe 9 is fixedly installed on the top of the side box 3.

[0024] After the flue gas is processed by the integrated treatment box 2, it enters the side box and passes through the dust filter 22, which can filter and intercept the reaction particles after desulfurization and denitrification in the flue gas. The ring mesh plate 23 provides a stable support structure for the dust filter 22.

[0025] Furthermore, a dust collection box 10 is provided at the bottom inside the side box 3. The front end of the dust collection box 10 slides to the front end surface of the side box 3. A backflush pipe 11 is provided inside the annular mesh plate 23. The upper end of the backflush pipe 11 extends to the outside of the side box 3. The backflush pipe 11 is connected to a pulse air supply device.

[0026] The dust collection box 10 can collect the particulate matter filtered by the dust filter 22. The front end of the dust collection box 10 slides to the front face of the side box 3, making it convenient for staff to regularly pull out the dust collection box 10 for cleaning. The operation is simple and quick, which greatly improves the maintenance efficiency of the device. The backwash pipe 11 is designed so that when the dust filter 22 has been used for a period of time, a lot of dust will accumulate on its surface, affecting the filtration effect. At this time, air can be supplied to the backwash pipe through the pulse air supply device to generate pulse airflow. After the airflow is ejected from the backwash pipe, it impacts the dust filter in the reverse direction, shaking off the dust attached to the dust filter plate and causing it to fall into the dust collection box 10. This backwash cleaning method does not require disassembling the dust filter 22, which can quickly and effectively restore the filtration performance of the dust filter 22 and increase its practicality.

[0027] Furthermore, a heating port 201 is provided on the rear end face of the integrated processing box 2, and a high-temperature resistant temperature sensor is provided on the upper part of the interior of the integrated processing box 2 to detect the temperature inside the integrated processing box 2. Multiple heating ports 201 are provided, and the heating ports 201 are connected to high-temperature steam supply equipment.

[0028] Both desulfurization and denitrification reactions require specific temperature conditions to proceed efficiently. After the heating port 201 is connected to the high-temperature steam supply equipment, it can provide a stable high-temperature environment to the integrated treatment box 2, ensuring the normal progress of desulfurization and denitrification reactions and increasing practicality.

[0029] Working principle: During operation, flue gas enters the integrated treatment box 2 through the flue gas inlet pipe 1, first flowing through the filter box 5. The dust filter plate 501 inside intercepts and removes particulate matter from the flue gas, achieving dust removal. Then, the flue gas passes through the gas delivery pipe 13 and the partition. At this time, the desulfurization supply pipe 6 delivers limestone powder from the external limestone powder supply equipment to the nozzle 601, which is then injected into the flue gas for desulfurization. Simultaneously, the denitrification supply pipe 7 delivers urea powder from the external urea powder supply equipment to the nozzle 701, which is then injected into the flue gas for denitrification. The guide plates 15 and 16 guide the flue gas to flow along a specific path, increasing the flow path length. The motor 19 drives the stirring shaft 17 and stirring blades 18 to rotate, stirring the flue gas and reactants, so that the limestone powder and flue gas, ammonia and nitrogen oxides are fully mixed, increasing the reaction contact area, accelerating the reaction speed, and improving the desulfurization and denitrification efficiency. The flue gas treated by the integrated treatment box 2 enters the side box 3, and the dust filter 22 filters and intercepts the reactant particles in the flue gas after desulfurization and denitrification. The dust collection box 10 collects the particles filtered by the dust filter 22, and then the flue gas is output through the exhaust pipe 9. All parts of the entire device work closely together to realize the integrated function of desulfurization, denitrification and dust removal, which increases practicality.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dry flue gas desulfurization, denitrification and dust removal integrated device, comprising a flue gas inlet pipe (1), characterized in that: An integrated treatment box (2) is fixedly installed on one side of the flue gas inlet pipe (1). A partition plate (12) is fixedly installed inside the integrated treatment box (2). A filter box (5) is provided between the partition plate (12) and the integrated treatment box (2). A partition plate (14) is fixedly installed inside the integrated treatment box (2) along one side of the partition plate (12). A gas supply pipe (13) is fixedly installed between the partition plate (12) and the partition plate (14). The two ends of the gas supply pipe (13) pass through the partition plate (12) and the partition plate (14) respectively. A filter box (5) is fixedly installed on the top of the integrated treatment box (2). The integrated treatment box (2) is equipped with a desulfurization feed pipe (6). A nozzle (601) is fixedly installed inside the integrated treatment box (2) along the bottom of the desulfurization feed pipe (6). The desulfurization feed pipe (6) is connected to the nozzle (601). A denitrification feed pipe (7) is fixedly installed above the integrated treatment box (2) along one side of the desulfurization feed pipe (6). A nozzle (701) is fixedly installed inside the integrated treatment box (2) along the bottom of the denitrification feed pipe (7). The denitrification feed pipe (7) is connected to the nozzle (701). A cleaning cover (8) is fixedly installed on the front end face of the integrated treatment box (2).

2. The integrated dry flue gas desulfurization, denitrification, and dust removal device according to claim 1, characterized in that: Inside the integrated processing box (2), a second guide plate (16) is fixedly installed. Inside the integrated processing box (2), a first guide plate (15) is symmetrically fixedly installed on both sides of the second guide plate (16). A stirring mechanism is provided on one side of both the first guide plate (15) and the second guide plate (16). The stirring mechanism includes a stirring shaft (17) and stirring blades (18). Multiple sets of stirring blades (18) are provided and fixedly installed on the outside of the stirring shaft (17). The lower end of the stirring shaft (17) is rotatably connected to the integrated processing box (2).

3. The integrated dry flue gas desulfurization, denitrification, and dust removal device according to claim 2, characterized in that: The integrated processing box (2) is fixedly installed with a motor cover (4) at the bottom. The motor cover (4) is equipped with a motor (19), and the output shaft end of the motor (19) is fixedly connected to the stirring shaft (17).

4. The integrated dry flue gas desulfurization, denitrification, and dust removal device according to claim 1, characterized in that: The front end of the filter box (5) slides to the front end of the integrated processing box (2). A dust filter plate (501) is fixedly installed inside the filter box (5). Pads (21) are symmetrically arranged on both sides below the filter box (5). The pad (21) on the left side is fixedly connected to the partition plate (12), and the pad (21) on the right side is fixedly connected to the integrated processing box (2).

5. The integrated dry flue gas desulfurization, denitrification, and dust removal device according to claim 1, characterized in that: A side box (3) is fixedly installed on one side of the integrated processing box (2), and the side box (3) is connected to the integrated processing box (2). A horizontal plate (20) is fixedly installed inside the side box (3). A through hole is provided inside the horizontal plate (20). A ring mesh plate (23) is fixedly installed below the horizontal plate (20) along the lower part of the through hole. A dust filter bucket (22) is fixedly installed on the outer side of the ring mesh plate (23). An exhaust pipe (9) is fixedly installed on the top of the side box (3).

6. The integrated dry flue gas desulfurization, denitrification, and dust removal device according to claim 5, characterized in that: A dust collection box (10) is provided at the bottom inside the side box (3). The front end of the dust collection box (10) slides to the front end surface of the side box (3). A backflush pipe (11) is provided inside the annular mesh plate (23). The upper end of the backflush pipe (11) extends to the outside of the side box (3).

7. The integrated dry flue gas desulfurization, denitrification, and dust removal device according to claim 1, characterized in that: The integrated processing box (2) has a heating port (201) on its rear end face, and there are multiple heating ports (201).

Images