SDS dry desulfurization and dust removal integrated device

Abstract

The application discloses a kind of SDS dry desulfurization and dust removal integrated device, including inlet flue, desulfurizer injection port, bag chamber, multiple desulfurization reaction bins, multiple partitions, guide vane, ash bucket, ash bucket guide vane, filter bag, upper box, ash cleaning device, ash bucket baffle, high material level meter, low material level meter, bin wall vibrator and ash valve.The integrated device can realize desulfurization and dust removal function in one device, but not simply assembled as a whole with desulfurization device and dust removal device, but has dust removal function in desulfurization area, also has desulfurization function in dust removal area, can be regarded as a kind of desulfurization, dust removal collaborative purification device;And overall structure is simple, easy to operate, with smaller footprint, good economic investment, low operating cost and high desulfurization and dust removal efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas purification, in particular to a SDS dry desulfurization and dust removal integrated device. BACKGROUND

[0002] The SDS sodium-based desulfurization is to spray sodium bicarbonate into the flue or desulfurization tower for reaction by a spraying system, and the sodium-based powder is activated and thermally decomposed in the high-temperature flue gas, fully contacts with SO2 in the flue gas, and chemically reacts to absorb and purify SO2.

[0003] The bag-type dust collector is a dry dust filtering device, mainly composed of an upper box, a bag chamber, filter bags, an ash bucket and an ash cleaning device, and is used for capturing dust. With the development of the bag-type dust collector itself, especially the continuous innovation and progress of the filter material which is the core component of the bag-type dust collector, the bag-type dust collector is more and more widely applied in dust removal systems in various industries, and plays an important role in the application in the industrial fields such as coal-fired power plants, waste power plants and cement plants.

[0004] The combination of the SDS dry desulfurization and the bag-type dust collector is a classic configuration, and the desulfurizer is usually sprayed into the inlet flue of the bag-type dust collector or the desulfurization tower before the inlet for desulfurization, and then the flue gas passes through the bag-type dust collector for dust purification. The desulfurizer spraying into the flue requires a relatively long reaction flue to ensure the reaction time of more than 2S, and the sufficient mixing of the flue gas and the desulfurizer is also considered. The desulfurizer spraying into the desulfurization tower requires setting a desulfurization tower, and since the flue gas has a low flow rate in the desulfurization tower, the dust settles in the desulfurization tower, and a separate ash conveying system is required. This configuration mode of desulfurization at the front end and dust removal at the rear end requires a large total plot position, high system resistance, and inconvenient operation and running, especially for the transformation project. The flue before the dust collector is very short, and the fan pressure head has little surplus, so this scheme is difficult to implement under this condition. SUMMARY

[0005] The present application aims at the problems existing in the prior art, and provides a SDS dry desulfurization and dust removal integrated device.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0007] A SDS dry desulfurization and dust removal integrated device, comprising a middle box, an ash bucket arranged below the middle box, an upper box arranged above the middle box, an inlet flue arranged on the lower side of the middle box, a desulfurizer spraying inlet arranged on the inlet flue, an ash cleaning assembly arranged in the upper box, and an outlet flue arranged on the upper side wall of the upper box.

[0008] The middle chamber is divided into a bag chamber and a desulfurization chamber by a first partition. The desulfurization chamber is divided into a first desulfurization reaction chamber and a second desulfurization reaction chamber by a second partition. The first desulfurization reaction chamber is located near the side wall of the middle chamber and is connected to the inlet flue. A baffle plate is also provided between the bottom of the first desulfurization reaction chamber and the ash hopper. The bottom of the second desulfurization reaction chamber is connected to the ash hopper. Several guide vanes are provided at the reversal connection point of the first and second desulfurization reaction chambers.

[0009] The ash hopper is located below the bag chamber and is equipped with several ash hopper guide plates. The bag chamber is equipped with several filter bags. Sulfur-containing and dust-containing flue gas enters through the inlet flue, passes through the first desulfurization reaction chamber and the second desulfurization reaction chamber in sequence, and then enters the bag chamber at the junction of the middle box and the ash hopper. The desulfurization by-products fall into the ash hopper below. The flue gas is treated by the filter bags and the dust removal assembly and then discharged through the outlet flue. The dust falls into the ash hopper through the ash hopper guide plates. The desulfurization by-products and dust are periodically discharged from the ash discharge valve below the ash hopper.

[0010] This integrated SDS dry desulfurization and dust removal device achieves both desulfurization and dust removal functions within a single unit by setting up a dust removal zone and a desulfurization zone. However, it is not simply a combination of desulfurization and dust removal devices; rather, the desulfurization zone has dust removal functionality, while the dust removal zone also has desulfurization functionality (because the dust removal zone increases the residence time of flue gas, further improving the desulfurization effect and efficiency). It can be regarded as a desulfurization and dust removal synergistic purification device. Moreover, the overall structure is simple, easy to operate, and features a small footprint, good investment economics, low operating costs, and high desulfurization and dust removal efficiency.

[0011] The middle chamber is divided into two functional zones by the first partition: a desulfurization zone and a dust removal zone. Within the desulfurization zone, a second partition is installed, dividing the desulfurization reaction chamber into a first desulfurization reaction chamber and a second desulfurization reaction chamber. This partition allows the flue gas to flow back through the desulfurization zone, facilitating thorough mixing of the desulfurizing agent and flue gas, increasing the desulfurization reaction time, and promoting the settling of larger dust particles and desulfurization byproducts. The flue gas flows through the first desulfurization reaction chamber and then back to the second desulfurization reaction chamber. Guide vanes are installed at the back-flow point to facilitate the mixing and reaction of the desulfurizing agent and flue gas, reducing resistance. After passing through the second desulfurization reaction chamber, the flue gas enters the dust removal zone, where filter bags are installed to purify the flue gas dust and further promote the desulfurization reaction, improving desulfurization efficiency.

[0012] The flue gas, after desulfurization and dust removal in the middle chamber, flows into the upper chamber and exits through the outlet flue. A dust removal device is installed in the upper chamber. Dust and desulfurization byproducts are activated when the filter bag resistance reaches the design value, at which point the dust and desulfurization byproducts are detached from the filter bags and fall into the ash hopper. The filter bag resistance decreases, and dust removal stops when the resistance drops back to the design value. The purpose is to maintain the pressure differential of the integrated unit within a certain range, avoiding excessive fluctuations in the flue gas system resistance that could affect the operation of the process system.

[0013] The flow-blocking plate is installed below the second partition with a certain gap, which can prevent the flue gas from short-circuiting through the ash hopper to the bag chamber when it flows through the first desulfurization reaction chamber, resulting in low desulfurization efficiency. At the same time, it can also allow dust and desulfurization by-products to fall into the ash hopper from the gap, thus playing a role in emission.

[0014] The purpose of the baffle plate in the ash hopper is to prevent the flue gas from scouring the bottom of the filter bags when it flows through the second desulfurization reaction chamber to the baghouse. Simultaneously, the smooth and even airflow entering the baghouse facilitates the settling of dust into the ash hopper, reducing resistance. The ash hopper stores the dust and desulfurization byproducts that fall after purification, and periodically discharges these materials through the ash discharge valve.

[0015] Furthermore, the flow-blocking plate is arranged at an angle, with one end connected to the lower end of the second partition and the other end folded towards the inner wall of the ash hopper. A gap a is provided between the flow-blocking plate and the inner wall of the ash hopper, where a = 100-200 mm.

[0016] The gap setting of the baffle plate is related to the dust concentration of the flue gas; a smaller value is used when the dust concentration of the flue gas is low, and a larger value is used when the dust concentration of the flue gas is high.

[0017] Furthermore, let the width of the first desulfurization reaction chamber be B, and the width of the second desulfurization reaction chamber be C. The values ​​of B and C are determined by the vertical height H of the bag chamber and the flue gas volume to ensure a desulfurization reaction time greater than 2 seconds. The vertical height H of the bag chamber is equal to the vertical height of the filter bag plus 100-1000 mm. This configuration ensures sufficient desulfurization reaction time in both the first and second desulfurization reaction chambers, allowing the desulfurizing agent to react fully and form desulfurization byproducts. It also prevents excessive flue gas volume or velocity from impacting the filter bag, ensuring filter bag safety and filtration efficiency. The values ​​of B and C can be equal.

[0018] Furthermore, the second partition is an adjustable partition, the inner wall of the middle box is provided with an adjustment groove, the side wall of the second partition is disposed in the adjustment groove, an adjustment screw is connected to the second partition, one end of the adjustment screw extends out of the middle box and is connected to an adjustment handle or a drive motor.

[0019] The second baffle is adjustable, allowing its position to be adjusted externally. This enables the width B of the first desulfurization reaction chamber and the width C of the second desulfurization reaction chamber to be changed. The distance between the two chambers can be adjusted in real time according to the amount of flue gas introduced, ensuring the desulfurization reaction time and effect. This also allows the device to be used for integrated treatment of flue gas with various flow rates. Rotating the adjusting screw allows the second baffle to reciprocate within the adjusting groove, thus completing the adjustment operation.

[0020] Furthermore, the adjusting screw is positioned above the second partition, and a pair of guide rods passing through the second partition are symmetrically arranged on both sides of the adjusting screw. One end of each guide rod is connected to the first partition, and the other end is connected to the inner wall of the middle housing. The pair of guide rods serves to guide and stabilize the second partition, allowing it to move smoothly during adjustment.

[0021] Furthermore, there are multiple vertically arranged ash hopper guide plates, with the length of the multiple ash hopper guide plates gradually increasing from the side closest to the first partition to the other side of the ash hopper, and the spacing between them decreasing.

[0022] Furthermore, the inlet flue and the outlet flue are located on opposite sides. The inlet flue is positioned close to the ash hopper and is equipped with multiple desulfurizing agent injection ports. The desulfurizing agent can be a sodium-based desulfurizing agent. The multiple injection ports can improve the uniform mixing effect of the desulfurizing agent and the flue gas.

[0023] Furthermore, the guide vanes are symmetrically arranged on both sides above the second partition, and a pair of guide vanes form an arc-shaped guide channel at the reversal connection.

[0024] Furthermore, the ash hopper is equipped with a high-level level gauge and a low-level level gauge on its wall, and a hopper wall vibrator is also installed on the outer wall of the ash hopper.

[0025] When the ash accumulates to a high level, the high-level level gauge triggers a signal, causing the controller to open the ash discharge valve to discharge the ash. When the ash accumulates to a low level, the discharge stops to maintain a certain ash seal and prevent external air from seeping in. The hopper wall vibrator is installed on the ash hopper wall to prevent ash bridging and facilitate ash discharge.

[0026] Furthermore, the upper and lower end faces of the middle box, the lower end face of the upper box, and the upper end face of the ash hopper are respectively provided with connecting flange edges. Adjacent connecting flange edges are respectively connected by bolts and a sealing ring or sealing gasket is provided between them. A tube sheet is provided at the joint between the middle box and the upper box, and the tube sheet is provided with several flue gas channels corresponding to the bag chamber. When the pressure difference between the bag chamber and the upper box reaches a preset value, the ash cleaning assembly is activated.

[0027] Compared with the prior art, the beneficial effects of this invention are: 1. This integrated SDS dry desulfurization and dust removal device, by setting up a dust removal zone and a desulfurization zone, can achieve desulfurization and dust removal functions in one device. However, it is not a simple assembly of the desulfurization device and the dust removal device into a whole. Instead, the desulfurization zone has a dust removal function, and the dust removal zone also has a desulfurization function. It can be regarded as a desulfurization and dust removal synergistic purification device; 2. The overall structure of this device is simple, easy to operate and use, and has the characteristics of small footprint, good investment economy, low operating cost, and high desulfurization and dust removal efficiency; 3. Dividing the desulfurization reaction chamber into a first desulfurization reaction chamber and a second desulfurization reaction chamber, its function is to make the flue gas return through the desulfurization zone, which is conducive to the full mixing of the desulfurizing agent and the flue gas, increasing the desulfurization reaction time, and at the same time, it is conducive to the settling of larger dust particles and desulfurization by-products; 4. A device is set below the second partition. The baffle plate, with a certain gap, prevents the flue gas from short-circuiting through the ash hopper to the baghouse when passing through the first desulfurization reaction chamber, thus avoiding low desulfurization efficiency. It also allows dust and desulfurization byproducts to fall into the ash hopper through the gap, serving as a discharge function. 5. The ash hopper guide plate is designed to prevent the flue gas from scouring the bottom of the filter bags when passing through the second desulfurization reaction chamber to the baghouse. Simultaneously, the airflow enters the baghouse smoothly and evenly, facilitating dust settling into the ash hopper and reducing resistance. 6. The second baffle plate is adjustable, allowing its position to be adjusted externally. This allows the width B of the first desulfurization reaction chamber and the width C of the second desulfurization reaction chamber to be adjusted according to actual conditions, ensuring desulfurization reaction time and effect, and enabling the device to be suitable for integrated treatment of flue gas with various flow rates. Attached Figure Description

[0028] Figure 1 This is a schematic elevation view of an integrated SDS dry desulfurization and dust removal device according to the present invention.

[0029] Figure 2 This is a plan view of an integrated SDS dry desulfurization and dust removal device according to the present invention;

[0030] Figure 3 This is another structural schematic diagram of an integrated SDS dry desulfurization and dust removal device according to the present invention;

[0031] Figure 4 for Figure 3 Schematic diagram of the AA section structure;

[0032] Figure 5 This is a schematic diagram illustrating the adjustment of the flow-blocking plate of the present invention;

[0033] In the diagram: 1. Inlet flue; 2. Desulfurizing agent injection inlet; 3. Baghouse; 4. First desulfurization reaction chamber; 5. Second baffle; 6. Guide vane; 7. Second desulfurization reaction chamber; 8. First baffle; 9. Ash hopper; 10. Ash hopper guide plate; 11. Filter bag; 12. Upper box; 13. Ash cleaning assembly; 14. Baffle plate; 15. High level gauge; 16. Low level gauge; 17. Bin wall vibrator; 18. Ash discharge valve; 19. Outlet flue; 20. Middle box; 21. Adjusting screw; 22. First drive motor; 23. Adjusting chute; 24. Guide rod; 25. Pull rope; 26. Rotating rod; 27. Second drive motor. Detailed Implementation

[0034] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "middle," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Example 1:

[0037] like Figure 1 and Figure 2 As shown, an integrated SDS dry desulfurization and dust removal device includes a middle box 20, an ash hopper 9 located below the middle box 20, and an upper box 12 located above the middle box 20. The lower side of the middle box 20 is provided with an inlet flue 1, and the inlet flue 1 is provided with a desulfurizing agent injection inlet 2. The upper box 12 is provided with a dust removal assembly 13, and the upper side wall of the upper box 12 is provided with an outlet flue 19.

[0038] The middle box 20 is divided into a bag chamber 3 and a desulfurization chamber by a first partition 8. The desulfurization chamber is divided into a first desulfurization reaction chamber 4 and a second desulfurization reaction chamber 7 by a second partition 5. The first desulfurization reaction chamber 4 is located near the side wall of the middle box 20 and is connected to the inlet flue 1. A baffle plate 14 is also provided between the bottom of the first desulfurization reaction chamber 4 and the ash hopper 9. The bottom of the second desulfurization reaction chamber 7 is connected to the ash hopper 9. Several guide vanes 6 are provided at the reversal connection point of the first desulfurization reaction chamber 4 and the second desulfurization reaction chamber 7.

[0039] The ash hopper 9 is located below the bag chamber 3 and is provided with several ash hopper guide plates 10. Several filter bags 11 are provided inside the bag chamber 3. Sulfur-containing and dust-containing flue gas enters through the inlet flue 1, passes through the first desulfurization reaction chamber 4 and the second desulfurization reaction chamber 7 in sequence for desulfurization, and then enters the bag chamber 3 at the junction of the middle box 20 and the ash hopper 9. Desulfurization by-products fall into the ash hopper 9 below. The flue gas is treated by the filter bags 11 and the dust removal assembly 13 and then discharged through the outlet flue 19. Dust falls into the ash hopper 9 through the ash hopper guide plates 10. Desulfurization by-products and dust are periodically discharged from the ash discharge valve 18 below the ash hopper 9.

[0040] This integrated SDS dry desulfurization and dust removal device achieves both desulfurization and dust removal functions within a single unit by setting up a dust removal zone and a desulfurization zone. However, it is not simply a combination of desulfurization and dust removal devices; rather, the desulfurization zone has dust removal functionality, while the dust removal zone also has desulfurization functionality (because the dust removal zone increases the residence time of flue gas, further improving the desulfurization effect and efficiency). It can be regarded as a desulfurization and dust removal synergistic purification device. Moreover, the overall structure is simple, easy to operate, and features a small footprint, good investment economics, low operating costs, and high desulfurization and dust removal efficiency.

[0041] The middle chamber 20 is divided into two functional zones by the first partition 8: a desulfurization zone and a dust removal zone. Within the desulfurization zone, the second partition 5 is installed, dividing the desulfurization reaction chamber into a first desulfurization reaction chamber 4 and a second desulfurization reaction chamber 7. This allows the flue gas to flow back through the desulfurization zone, facilitating thorough mixing of the desulfurizing agent and flue gas, increasing the desulfurization reaction time, and promoting the settling of larger dust particles and desulfurization byproducts. The flue gas flows through the first desulfurization reaction chamber 4 and then back to the second desulfurization reaction chamber 7. The guide vanes 6 are installed at the back point to facilitate the mixing and reaction of the desulfurizing agent and flue gas, reducing resistance. After passing through the second desulfurization reaction chamber 7, the flue gas enters the dust removal zone, where filter bags 11 are installed to purify the flue gas dust and further promote the desulfurization reaction, improving desulfurization efficiency.

[0042] The flue gas, after desulfurization and dust removal in the middle chamber 20, flows into the upper chamber and is discharged through the outlet flue. A dust removal assembly 13 is installed inside the upper chamber 12. Dust removal is initiated when the resistance of the filter bag 11 reaches the design value. At this time, dust and desulfurization byproducts are detached from the filter bag 11 and fall into the ash hopper, reducing the filter bag resistance. Dust removal stops when the resistance drops back to the design value. The purpose is to maintain the pressure differential of the integrated unit within a certain range, avoiding excessive fluctuations in the flue gas system resistance that could affect the operation of the process system.

[0043] The flow-blocking plate 14 is set below the second partition 5 with a certain gap, which can prevent the flue gas from short-circuiting through the ash hopper 9 to the bag chamber 3 when it passes through the first desulfurization reaction chamber 4, resulting in low desulfurization efficiency. At the same time, it can also allow dust and desulfurization by-products to fall into the ash hopper 9 from the gap, which can play a role in emission.

[0044] The purpose of the ash hopper guide plate 10 is to prevent the flue gas from scouring the bottom of the filter bags when it flows through the second desulfurization reaction chamber to the bag chamber. At the same time, the airflow enters the bag chamber 3 smoothly and evenly, which is conducive to the settling of dust into the ash hopper 9 and helps to reduce resistance. The function of the ash hopper 9 is to store the dust and desulfurization by-products that fall after purification, and to periodically discharge the dust and desulfurization by-products through the ash discharge valve.

[0045] Furthermore, the flow-blocking plate 14 is arranged at an angle, with one end of the flow-blocking plate 14 connected to the lower end of the second partition plate 5 and the other end folded towards the inner wall of the ash hopper 9. A gap a is provided between the flow-blocking plate 14 and the inner wall of the ash hopper 9, where a = 100-200 mm.

[0046] The gap setting of the baffle plate 14 is related to the dust concentration of the flue gas; a smaller value is used when the dust concentration of the flue gas is low, and a larger value is used when the dust concentration of the flue gas is high.

[0047] Furthermore, let the width of the first desulfurization reaction chamber 4 be B, and the width of the second desulfurization reaction chamber 7 be C. The values ​​of B and C are determined by the vertical height H of the bag chamber and the flue gas volume, ensuring a desulfurization reaction time greater than 2 seconds. The vertical height H of the bag chamber 3 is equal to the vertical height of the filter bag + 100-1000 mm. This configuration ensures sufficient desulfurization reaction time in both the first and second desulfurization reaction chambers 4 and 7, allowing the desulfurizing agent to fully react and form desulfurization byproducts. It also prevents excessive flue gas volume or velocity from impacting the filter bag, ensuring filter bag safety and filtration efficiency.

[0048] Furthermore, there are multiple vertically arranged ash hopper guide plates 10. The length of the multiple ash hopper guide plates 10 gradually increases from the side near the first partition plate 8 to the other side of the ash hopper 9, and the spacing decreases to adapt to the change in flow rate and velocity of the flue gas from near to far. This also facilitates ash falling on the far side and reduces the ash being carried up by the flue gas again.

[0049] Furthermore, the inlet flue 1 and the outlet flue 19 are respectively located on both sides. The inlet flue 1 is located near the top of the ash hopper 9. The inlet flue 1 is provided with multiple desulfurizing agent injection inlets 2. The desulfurizing agent can be a sodium-based desulfurizing agent. The multiple injection inlets can improve the effect of uniform mixing of the desulfurizing agent and the flue gas.

[0050] Furthermore, the guide vanes 6 are symmetrically arranged on both sides above the second partition 5, and a pair of guide vanes 6 form an arc-shaped guide channel at the reversal connection.

[0051] Furthermore, the hopper 9 is equipped with a high level gauge 15 and a low level gauge 16 on its hopper wall, and a hopper wall vibrator 17 is also installed on the outer side wall of the hopper 9.

[0052] When the ash accumulates to a high level, the high-level level gauge 15 triggers a signal, causing the controller to open the ash discharge valve 18 to discharge the ash. When the ash accumulates to a low level, the ash discharge stops, the purpose of which is to retain a certain ash seal to prevent external air from seeping in. The hopper wall vibrator 17 is installed on the ash hopper wall to prevent ash bridging and facilitate ash discharge.

[0053] Furthermore, the upper and lower end faces of the middle box 20, the lower end face of the upper box 12, and the upper end face of the ash hopper 9 are respectively provided with connecting flange edges. Adjacent connecting flange edges are respectively connected by bolts and a sealing ring is provided between them. A tube sheet is provided at the joint between the middle box 20 and the upper box 12. The tube sheet is provided with several flue gas channels corresponding to the bag chamber, so that flue gas can enter the upper box 12 from the bag chamber 3. When the pressure difference between the bag chamber 3 and the upper box 12 reaches a preset value, the ash cleaning assembly 13 is activated.

[0054] Example 2:

[0055] This embodiment provides a structure with an adjustable second baffle and a flow-blocking plate.

[0056] like Figures 3-5 As shown, the second partition 5 is an adjustable partition, and the inner wall of the middle box 20 is provided with an adjustment groove 23. The two sides of the second partition 5 are arranged in the adjustment groove 23. An adjustment screw 21 is connected to the second partition 5 through a threaded sliding sleeve. One end of the adjustment screw 21 extends out of the middle box 20 and is connected to the first drive motor 22.

[0057] The second partition 5 is adjustable, allowing its position to be adjusted externally. This alters the width B of the first desulfurization reaction chamber 4 and the width C of the second desulfurization reaction chamber 7. The distance between them can be adjusted in real-time based on the amount of flue gas introduced, ensuring both desulfurization reaction time and effectiveness. This also allows the device to be used for integrated treatment of flue gas with various flow rates. The second partition 5 reciprocates within the adjusting groove 23 by rotating the adjusting screw 21 driven by the first drive motor 22, thus completing the adjustment operation.

[0058] Furthermore, the adjusting screw 21 is located at the upper center of the second partition 5. A pair of guide rods 24, passing through the second partition 5, are symmetrically arranged on both sides of the adjusting screw 21. One end of each guide rod 24 is connected to the first partition 8, and the other end is connected to the inner wall of the middle housing 20. The pair of guide rods 24 guide and stabilize the second partition 5, allowing it to move smoothly during adjustment.

[0059] Furthermore, the flow-blocking plate 14 is rotatably connected to the lower end of the second partition plate 5 via a rotating shaft or hinge. The other end of the flow-blocking plate 14 is connected to a pull rope 25, which is wound on a rotating rod 26. One end of the rotating rod 26 passes through the ash hopper 9 and is connected to a second drive motor 27.

[0060] The second drive motor 27 can drive the rotating rod 26 to rotate in both directions, thereby releasing or tightening the pull rope 25 to control the flow baffle 14. During the rotation, the flow baffle 14 can adjust the tilt angle and the gap a between the flow baffle and the ash hopper, thereby regulating the ash and desulfurization by-products falling at that location.

[0061] For example, when the flue gas volume is small, the baffle plate 14 can be pulled to reduce the size of the gap, preventing the flue gas from falling into the ash hopper and allowing dust and desulfurization byproducts to accumulate and fall slowly. When the flue gas volume or ash accumulation is large, the baffle plate 14 can be loosened to increase the gap, which is conducive to the rapid fall of dust and desulfurization byproducts and reduces accumulation. The adjustment function of the baffle plate 14 can also be used in conjunction with the adjustment of the second baffle plate 5 to achieve the best desulfurization and dust reduction effect.

[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated SDS dry desulfurization and dust removal device, characterized in that, It includes a middle box, an ash hopper located below the middle box, and an upper box located above the middle box. The lower side of the middle box is provided with an inlet flue, and a desulfurizing agent injection inlet is provided on the inlet flue. The upper box is provided with a dust removal assembly, and the upper side wall of the upper box is provided with an outlet flue. The middle chamber is divided into a bag chamber and a desulfurization chamber by a first partition. The desulfurization chamber is further divided into a first desulfurization reaction chamber and a second desulfurization reaction chamber by a second partition, which are connected in a reversible manner. The first desulfurization reaction chamber is located near the side wall of the middle chamber and is connected to the inlet flue. A baffle plate is also provided between the bottom of the first desulfurization reaction chamber and the ash hopper. The bottom of the second desulfurization reaction chamber is connected to the ash hopper. Several guide vanes are provided at the reversible connection point of the first and second desulfurization reaction chambers. The second partition is an adjustable partition. An adjustment groove is provided on the inner wall of the middle chamber. The side wall of the second partition is located in the adjustment groove. An adjustment screw is connected to the second partition. One end of the adjustment screw extends out of the middle chamber and is connected to an adjustment handle or a drive motor. The adjustment screw is located above the second partition. A pair of guide rods passing through the second partition are symmetrically provided on both sides of the adjustment screw. One end of the guide rod is connected to the first partition, and the other end is connected to the inner wall of the middle chamber. The ash hopper is located below the bag chamber and is equipped with several ash hopper guide plates. The bag chamber is equipped with several filter bags. Sulfur-containing and dust-containing flue gas enters through the inlet flue, passes through the first desulfurization reaction chamber and the second desulfurization reaction chamber in sequence, and then enters the bag chamber at the junction of the middle box and the ash hopper. The desulfurization by-products fall into the ash hopper below. The flue gas is treated by the filter bags and the dust removal assembly and then discharged through the outlet flue. The dust falls into the ash hopper through the ash hopper guide plates. The desulfurization by-products and dust are periodically discharged from the ash discharge valve below the ash hopper.

2. The integrated SDS dry desulfurization and dust removal device according to claim 1, characterized in that, The flow baffle is arranged at an angle. One end of the flow baffle is connected to the lower end of the second partition, and the other end is bent toward the inner wall of the ash hopper. A gap a is provided between the flow baffle and the inner wall of the ash hopper, where a = 100 to 200 mm.

3. The integrated SDS dry desulfurization and dust removal device according to claim 1, characterized in that it is equipped with... The width of the first desulfurization reaction chamber is B, and the width of the second desulfurization reaction chamber is C. The values ​​of B and C are determined by the vertical height H of the bag chamber and the flue gas volume, so that the desulfurization reaction time is greater than 2 seconds. The vertical height H of the bag chamber is equal to the vertical height of the filter bag + 100 to 1000 mm.

4. The integrated SDS dry desulfurization and dust removal device according to claim 1, characterized in that, The ash hopper guide plates are multiple vertically arranged, and the length of the multiple ash hopper guide plates gradually increases from the side closest to the first partition to the other side of the ash hopper, while the spacing between them decreases.

5. The integrated SDS dry desulfurization and dust removal device according to claim 1, characterized in that, The inlet flue and the outlet flue are located on opposite sides. The inlet flue is located close to the ash hopper and has multiple desulfurizing agent injection inlets.

6. The integrated SDS dry desulfurization and dust removal device according to claim 1, characterized in that, The guide vanes are symmetrically arranged on both sides above the second partition, and a pair of guide vanes form an arc-shaped guide channel at the reversal connection.

7. The integrated SDS dry desulfurization and dust removal device according to claim 1, characterized in that, The ash hopper is equipped with a high-level level gauge and a low-level level gauge on its wall, and a hopper wall vibrator is also installed on the outer wall of the ash hopper.

8. The integrated SDS dry desulfurization and dust removal device according to claim 1, characterized in that, The upper and lower end faces of the middle box, the lower end face of the upper box, and the upper end face of the ash hopper are respectively provided with connecting flange edges. Adjacent connecting flange edges are respectively connected by bolts and a sealing ring or sealing gasket is provided between them. A tube sheet is provided at the joint between the middle box and the upper box. The tube sheet is provided with several flue gas channels corresponding to the bag chamber. The ash cleaning component is activated when the pressure difference between the bag chamber and the upper box reaches a preset value.

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