A high-concentration, environmentally friendly flue gas desulfurization and dust removal device

Abstract

This invention relates to the field of air control and pollution treatment, and particularly to a high-concentration, environmentally friendly flue gas desulfurization and dust removal device. It includes a tower shell with an air inlet. A ventilation cylinder is fixed to the upper side of the tower shell via a support. A top plate is fixed to the upper side of the ventilation cylinder, and the top plate has an exhaust port. Circumferentially distributed liquid spray pipes are arranged on the lower side of the top plate. The ventilation cylinder and the tower shell form an air inlet cavity that communicates with the air inlet. A drain port for discharging liquid within the ventilation cylinder is provided on the lower side of the tower shell. A first filter screen for dust removal is provided on the lower part of the inner wall of the ventilation cylinder. The diameter of the ventilation cylinder gradually decreases from the middle to the bottom. This invention, through the design of the ventilation cylinder being wider at the top and narrower at the bottom, combined with the spiral distribution of the air guide holes, ensures uniform distribution of flue gas within the ventilation cylinder, increases the contact area between the flue gas and the lime slurry, and improves the efficiency of desulfurization of high-concentration flue gas.

Description

Technical Field

[0001] This invention relates to the field of air control and pollution treatment, and in particular to a high-concentration environmentally friendly flue gas desulfurization and dust removal device. Background Technology

[0002] With the acceleration of industrialization, industries such as coal-fired power plants, steel smelting, coking, glass manufacturing, non-ferrous metal smelting, and chemicals have developed rapidly, resulting in the emission of more industrial flue gas. This flue gas generally contains high concentrations of sulfur dioxide (SO2) and particulate matter (PM), which are major pollutants that cause acid rain, smog (an important precursor to PM2.5), damage the ecological environment, and harm human health.

[0003] Some industries produce flue gas with extremely high SO2 concentrations, large dust loads, and complex compositions. Currently, most flue gas is treated using spray towers, which rely on atomized lime slurry to contact the flue gas and remove SO2 and other sulfides. However, for high-concentration flue gas, the equal diameter design of the spray tower causes the flue gas entering the tower to be concentrated in one position, resulting in insufficient contact area between the atomized lime slurry and the flue gas, leading to low treatment efficiency for high-concentration flue gas. Summary of the Invention

[0004] To overcome the shortcomings of insufficient contact area between atomized lime slurry and flue gas in existing spray towers, this invention provides a high-concentration, environmentally friendly flue gas desulfurization and dust removal device with filtration function.

[0005] Technical Solution: A high-concentration environmentally friendly flue gas desulfurization and dust removal device includes a tower shell, an air inlet, a venting cylinder fixed to the upper side of the tower shell via a bracket, a top plate fixed to the upper side of the venting cylinder, an exhaust port on the top plate, and circumferentially distributed liquid spray pipes on the lower side of the top plate. The venting cylinder and the tower shell form an air inlet cavity that communicates with the air inlet. A drain port for discharging liquid within the venting cylinder is provided on the lower part of the inner wall of the venting cylinder. A first filter screen for dust removal is provided on the lower part of the venting cylinder. The diameter of the lower part of the venting cylinder gradually decreases from top to bottom. Several sets of circumferentially evenly distributed air guide holes are provided on the lower part of the venting cylinder. The air guide holes in the same set are spirally distributed. An intercepting plate is installed on the lower side of the venting cylinder. The intercepting plate and the tower shell are jointly provided with a sliding sleeve. A connecting frame is fixed to the lower side of the sliding sleeve.

[0006] Furthermore, the lower part of the inner wall of the vent is provided with circumferentially evenly distributed guide grooves, all of which are spiral in shape, and the diameter of all the air guide holes increases sequentially from top to bottom.

[0007] Furthermore, it also includes a filtration mechanism, which is disposed on the upper side of the tower shell. The filtration mechanism is used to filter impurities in the flue gas in the air intake chamber. The filtration mechanism includes a transmission ring, which is rotatably connected to the upper side of the tower shell and rotatably connected to the ventilation cylinder. The tower shell is provided with a first power module for driving the transmission ring to rotate. The transmission ring is fixedly connected to fixed rods that are circumferentially evenly distributed and located in the air intake chamber. The fixed rods are equipped with second filter screens, which are trapezoidal in shape. The fixed rods are fixedly connected to scrapers located below the second filter screens. The scrapers are deflected relative to the adjacent second filter screens. The fixed rods are provided with equally spaced air-pushing components, which are used to guide the flue gas in the air intake chamber into the air guide hole.

[0008] Furthermore, the air-propulsion component includes a fixed ring, which is fixedly connected to the fixed rod. The fixed ring is rotatably connected to a baffle. The axis of the air inlet is misaligned with the axis of the air cylinder. The baffle is slidably and rotatably connected to an insert rod. The axis of the insert rod coincides with the rotation axis of the baffle. A spring is fixedly connected between the insert rod and the baffle. The insert rod is fixedly connected to a guide rod that is slidably connected to the fixed ring. The insert rod is provided with a sliding groove. The baffle is provided with a convex ball that slides within the sliding groove of the insert rod.

[0009] Furthermore, it also includes equally spaced limiting rings, the number of which is equal to the number of fixing rings on the same fixing rod. The limiting rings are slidably connected to the inner wall of the tower shell. A first guide portion is provided in the middle of the inner wall of the limiting ring, and a second guide portion is provided in the lower part of the inner wall of the limiting ring. Both the first guide portion and the second guide portion are used to limit the insertion rod. The number of the first guide portion and the second guide portion is equal. The tower shell is rotatably connected to a rotating rod that is threaded to all the limiting rings. A second power module for driving the rotation of the rotating rod is provided on the lower side of the rotating rod of the tower shell.

[0010] Furthermore, the arc length of the second guide portion is greater than the arc length of the first guide portion.

[0011] Furthermore, the side of the air guide hole closest to the outer wall of the vent is the air inlet side, and the side of the air guide hole closest to the inner wall of the vent is the air outlet side, with the diameter of the air guide hole gradually decreasing from the air inlet side to the air outlet side.

[0012] Furthermore, it also includes a discharge assembly, which is disposed on the lower side of the tower shell. The discharge assembly is used to discharge impurities in the air inlet cavity. The discharge assembly includes a rotating ring, which is rotatably connected to the outside of the venting cylinder. The tower shell, the sliding sleeve, and the rotating ring together form a discharge cavity communicating with the air inlet cavity. The discharge cavity is connected to the liquid outlet and the lower side of the venting cylinder. The rotating ring is fixedly connected with circumferentially spaced diverter blocks located in the discharge cavity. The tower shell is fixedly connected with circumferentially spaced interceptor blocks located in the discharge cavity. The circumferentially spaced diverter blocks are located above the circumferentially spaced interceptor blocks and are staggered. A rotating assembly is disposed on the outside of the rotating ring, which is used to rotate the rotating ring. The sliding sleeve is slidably connected to both the interceptor plate and the tower shell. A third power module is disposed on the lower side of the connecting frame.

[0013] Furthermore, the upper part of the diversion block is provided with symmetrically distributed inclined surfaces.

[0014] Furthermore, the rotating assembly includes centrally symmetrically distributed L-shaped rods, all of which are fixed to the lower side of the rotating ring. The outer side of the sliding sleeve is provided with centrally symmetrically distributed guide grooves, and the L-shaped rods slide within the guide grooves adjacent to the sliding sleeve.

[0015] The present invention has the following advantages: By setting the lower part of the ventilation cylinder to be wider at the top and narrower at the bottom, and cooperating with the spiral distribution of the air guide holes, the flue gas is evenly distributed in the ventilation cylinder, increasing the contact area between the flue gas and the lime slurry, and improving the efficiency of desulfurization of high-concentration flue gas. The flue gas is initially filtered by the second filter screen on the fixed rod, and then filtered a second time by the first filter screen in the ventilation cylinder, which improves the filtration effect of the flue gas. By adjusting the position relationship between the limiting ring and the insert rod, the frequency of the baffle blocking the flue gas is adjusted, thereby changing the speed at which the flue gas enters the ventilation cylinder and improving the treatment efficiency of the flue gas. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention;

[0018] Figure 3 This is a three-dimensional cross-sectional view of the top plate and ventilator of the present invention;

[0019] Figure 4 This is a three-dimensional cross-sectional view of the ventilation cylinder of the present invention;

[0020] Figure 5 This is a three-dimensional structural diagram of the filtration mechanism of the present invention;

[0021] Figure 6 This is a three-dimensional structural diagram of the fixing ring and baffle of the present invention;

[0022] Figure 7 This is a three-dimensional structural diagram of the insertion rod and guide rod of the present invention;

[0023] Figure 8 This is a three-dimensional structural diagram of the drain port and discharge cavity of the present invention;

[0024] Figure 9 This is a three-dimensional structural diagram of the diversion block and the interception block of the present invention;

[0025] Figure 10 This is a three-dimensional structural diagram of the sliding sleeve and L-shaped rod of the present invention.

[0026] In the above attached figures: 1: Tower shell, 101: Air inlet, 102: Air inlet cavity, 103: Liquid outlet, 104: Material discharge cavity, 2: Top plate, 201: Exhaust outlet, 3: Ventilation cylinder, 301: Air guide hole, 302: Flow guide groove, 4: Interceptor plate, 5: Sliding sleeve, 6: Connecting frame, 7: Transmission ring, 8: Fixing rod, 801: Scraper, 9: Fixing ring, 10: Baffle, 11: Insert rod, 12: Guide rod, 13: Limiting ring, 14: First guide part, 15: Second guide part, 16: Rotating ring, 17: Diverter block, 18: Interceptor block, 19: L-shaped rod. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only 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.

[0028] Example 1

[0029] A high-concentration, environmentally friendly flue gas desulfurization and dust removal device, such as Figures 1-4As shown, the system includes a tower shell 1 with three circumferentially distributed air inlets 101. A ventilation cylinder 3 is fixedly connected to the upper side of the tower shell 1 via a bracket. A top plate 2 is fixedly connected to the upper side of the ventilation cylinder 3. An exhaust port 201 for discharging flue gas after desulfurization is located on the left side of the upper side of the top plate 2. An exhaust pipe is located on the upper side of the top plate 2, and circumferentially distributed liquid spray pipes are located on the lower side of the top plate 2. All the liquid spray pipes on the top plate 2 are connected to an external liquid inlet device. The liquid spray pipes of the top plate 2 are used to atomize lime slurry and spray it downwards to contact the flue gas. In this embodiment, the tower shell 1 is sealed to the ventilation cylinder 3, and the outer side of the ventilation cylinder 3 is sealed to the tower shell 1. The shell 1 forms an air inlet cavity 102 that is connected to the air inlet 101. A drain port 103 is provided on the lower side of the tower shell 1 for discharging the liquid inside. The drain port 103 is used to discharge lime slurry that liquefies after contact with flue gas. A first filter screen for dust removal is provided on the lower part of the inner wall of the ventilation cylinder 3. The diameter of the lower part of the ventilation cylinder 3 gradually decreases from top to bottom, so that the falling lime slurry flows downward along the inner side of the ventilation cylinder 3 and impacts the impurities adhering to the first filter screen of the ventilation cylinder 3, ensuring the unobstructed flow of the first filter screen on the ventilation cylinder 3. A circumferentially evenly distributed guide groove 302 is provided on the lower part of the inner wall of the ventilation cylinder 3. Part of the lime slurry that passes through the first filter screen of the ventilation cylinder 3 flows downward along the guide channel 302. The guide channel 302 accelerates the discharge speed of the liquid from the first filter screen on the ventilation cylinder 3. The lower part of the ventilation cylinder 3 is provided with several groups of circumferentially evenly distributed air guide holes 301. The air guide holes 301 within the same group are spirally distributed. All the air guide holes 301 are not in the same vertical direction, and the diameter of the ventilation cylinder 3 gradually decreases from top to bottom, so that the flue gas is evenly distributed within the ventilation cylinder 3, increasing the contact area between the flue gas and the lime slurry, and improving the efficiency of desulfurization of high-concentration flue gas. The diameter of all the air guide holes 301 increases sequentially from top to bottom. The larger size of the lower air guide hole 301 ensures that the flue gas content discharged from the upper air guide hole 301 is greater than that discharged from the lower air guide hole 301, thereby increasing the flue gas processing capacity. All guide grooves 302 are spiral in shape. An intercepting plate 4 is installed on the lower side of the ventilation cylinder 3. A sliding sleeve 5 is provided on the outer side of the intercepting plate 4 and the tower shell 1. In this embodiment, the upper side of the sliding sleeve 5 is flush with the upper side of the intercepting plate 4, and a connecting frame 6 is fixedly connected to the lower side of the sliding sleeve 5. The lime slurry after contacting the flue gas flows downward into the upper side of the intercepting plate 4 and is discharged from the drain port 103.

[0030] This equipment is an improvement on the existing spray tower. When the equipment is needed to desulfurize flue gas, the operator starts the liquid inlet device to introduce lime slurry into the spray pipe on the top plate 2. The spray pipe on the top plate 2 sprays out lime slurry, which is atomized and falls. At the same time, the operator introduces flue gas into the air inlet chamber 102 through the air inlet 101. The flue gas enters the ventilation cylinder 3 through the air guide hole 301. During the process of the flue gas entering the ventilation cylinder 3, it will come into contact with the first filter screen on the ventilation cylinder 3. The particulate impurities in the flue gas are filtered by the first filter screen on the ventilation cylinder 3. The flue gas entering the ventilation cylinder 3 comes into contact with the falling lime slurry, and the sulfur in the sulfur-containing gases such as SO2 in the flue gas is removed. Since the diameter of the ventilation cylinder 3 gradually decreases from top to bottom, the falling lime slurry flows downward along the inner side of the ventilation cylinder 3 and impacts the impurities adhering to the first filter screen of the ventilation cylinder 3, ensuring the unobstructed flow of the first filter screen on the ventilation cylinder 3.

[0031] Part of the lime slurry that passes through the first filter screen of the ventilation cylinder 3 flows downward along the guide channel 302. The guide channel 302 accelerates the discharge speed of the liquid from the first filter screen on the ventilation cylinder 3. After contacting the flue gas, the lime slurry flows downward into the upper side of the interception plate 4 and is discharged from the drain port 103. The operator collects the discharged lime slurry. Since the air guide holes 301 are not in a vertical direction, and the diameter of the lower part of the ventilation cylinder 3 gradually decreases from top to bottom, the flue gas is evenly distributed in the lower part of the ventilation cylinder 3, increasing the contact area between the flue gas and the lime slurry and improving the efficiency of desulfurization of high-concentration flue gas. Because the distance from the flue gas discharged from the lower air guide hole 301 to the top plate 2 is... The distance from the upper vent 301 to the top plate 2 is greater than the distance from the upper vent 301 to the lime slurry. Therefore, the contact time between the flue gas discharged from the lower vent 301 and the lime slurry is longer than that between the flue gas discharged from the lower vent 301 and the lime slurry. This equipment sets the diameter of all vents 301 to increase sequentially from top to bottom, so that the flue gas content discharged from the lower vent 301 is greater than that discharged from the upper vent 301. This ensures that the flue gas discharged from the lower vent 301 can be processed before the exhaust port 201, increasing the amount of flue gas that can be processed. The desulfurized flue gas is discharged from the exhaust pipe through the exhaust port 201, and the operator collects the discharged flue gas.

[0032] Example 2

[0033] Based on Example 1, a high-concentration environmentally friendly flue gas desulfurization and dust removal device, such as... Figure 2 , Figure 3 and Figure 5As shown, it also includes a filtering mechanism, which is located on the upper side of the tower shell 1. The filtering mechanism is used to filter impurities in the flue gas in the air intake chamber 102. In this embodiment, there is a gap between the shell 1, the top plate 2, and the ventilation cylinder 3. The filtering mechanism includes a transmission ring 7, which is rotatably connected to the upper side of the tower shell 1. The transmission ring 7 and the ventilation cylinder 3 are rotatably connected, and the transmission ring 7 seals the gap between the tower shell 1 and the ventilation cylinder 3. The tower shell 1 is provided with a first power module for driving the transmission ring 7 to rotate. The first power module can be a motor and a gear set. The transmission ring 7 is driven to rotate through the transmission of the motor and the gear set. It is not shown in the figure. The transmission ring 7 is fixedly connected to three fixed rods 8 located in the air intake chamber 102 and evenly distributed in the circumference. The fixed rods 8 are equipped with second filter screens. The shape of the second filter screen on the fixed rod 8 is trapezoidal, ensuring that the second filter screen on the fixed rod 8 sweeps through the entire air intake chamber 102 after rotating one revolution. The lower end of the fixed rod 8 is fixedly connected to a scraper 801, which is located below the second filter screen of the adjacent fixed rod 8. Figure 5 The left side of the scraper 801 deflects forward, and the right side of the scraper 801 deflects backward. The scraper 801 deflects relative to the adjacent second filter screen. The fixed rod 8 drives the scraper 801 to rotate, which gathers the impurities on the lower side of the air intake chamber 102 towards the center. The fixed rod 8 is provided with two equally spaced air-pushing components, which are used to guide the flue gas in the air intake chamber 102 into the air guide hole 301.

[0034] like Figure 3 and Figures 5-7 As shown, the air-pushing component includes a fixed ring 9, which is fixedly connected to a fixed rod 8. A baffle 10 is rotatably connected to the fixed ring 9. The axis of the air inlet 101 is misaligned with the axis of the ventilation cylinder 3, causing the flue gas entering the air inlet chamber 102 to rotate clockwise, thereby contacting the second filter screen on the fixed rod 8 and improving the filtration effect of the flue gas. A rod 11 is slidably and rotatably connected to the side of the baffle 10 near the inner wall of the tower shell 1. The axis of the rod 11 coincides with the rotation axis of the baffle 10. A spring is fixed between the insertion rod 11 and the baffle 10. A guide rod 12 is fixed to the lower side of the insertion rod 11 and slidably connected to the fixed ring 9. The guide rod 12 is used to prevent the adjacent insertion rod 11 from rotating. A sliding groove is provided on the side of the insertion rod 11 near the adjacent baffle 10. The sliding groove on the insertion rod 11 is arc-shaped. The baffle 10 is provided with a convex ball that slides in the sliding groove of the insertion rod 11. When the insertion rod 11 moves close to the baffle 10, the baffle 10 is driven to rotate through the sliding groove of the insertion rod 11 and the convex ball of the baffle 10.

[0035] like Figure 2 , Figure 5 and Figure 7As shown, it also includes two equally spaced limiting rings 13. The inner wall of the tower shell 1 has two annular grooves, one above the other. The limiting rings 13 slide vertically within these grooves. Three circumferentially distributed first guide portions 14 are provided in the middle of the inner wall of the limiting rings 13, and three circumferentially distributed second guide portions 15 are provided in the lower part of the inner wall of the limiting rings 13. Both the first and second guide portions 14 are used to limit the insertion rod 11. The arc length of the second guide portion 15 is greater than the arc length of the first guide portion 14. The right side of the tower shell 1 is rotatably connected to a threaded connection with all the limiting rings 13. The lower side of the rotating rod of the tower shell 1 is provided with a second power module for driving its rotation. The second power module can be a motor. The output shaft of the motor is fixedly connected to the rotating rod of the tower shell 1 (not shown in the figure). The rotation of the rotating rod of the tower shell 1 drives the limiting ring 13 to move longitudinally. The side of the air guide hole 301 near the outer wall of the ventilation cylinder 3 is the air inlet side, and the side of the air guide hole 301 near the inner wall of the ventilation cylinder 3 is the air outlet side. The diameter of the air guide hole 301 gradually decreases from the air inlet side to the air outlet side, making it easier for the flue gas in the air inlet cavity 102 to be pushed into the air guide hole 301, thus accelerating the discharge of the flue gas in the air inlet cavity 102.

[0036] like Figure 2 and Figures 8-10 As shown, it also includes a discharge assembly, which is disposed on the lower side of the tower shell 1. The discharge assembly is used to discharge impurities in the air inlet cavity 102. The discharge assembly includes a rotating ring 16, which is rotatably connected to the outside of the ventilation cylinder 3. The tower shell 1, the sliding sleeve 5, and the rotating ring 16 together form a discharge cavity 104 that communicates with the air inlet cavity 102. The discharge cavity 104 communicates with the liquid outlet 103 and the lower side of the ventilation cylinder 3. In this embodiment, the upper side of the sliding sleeve 5 is higher than the upper side of the intercepting plate 4, so that the liquefied lime slurry accumulates in the intercepting plate 4, which facilitates the subsequent cleaning of impurity particles in the discharge cavity 104. The rotating ring 16 is fixedly connected with diverting blocks 17 that are circumferentially spaced and located in the discharge cavity 104. The tower shell 1 is fixedly connected with intercepting blocks 18 that are circumferentially spaced and located in the discharge cavity 104. Diverting block 17 is located above and staggered with circumferentially equally spaced intercepting blocks 18. The horizontal projected area of ​​diverting block 17 and intercepting block 18 is the same. The circumferentially equally spaced diverting block 17 and circumferentially equally spaced intercepting blocks 18 separate the discharge cavity 104. In the initial state, diverting block 17 contacts the adjacent intercepting block 18 and blocks the upper side between the two adjacent intercepting blocks 18. The upper part of diverting block 17 is provided with symmetrically distributed inclined surfaces, which guide the impurities entering the discharge cavity 104 to the upper part of the two adjacent intercepting blocks 18. A rotating component is provided on the outer side of the rotating ring 16. The rotating component is used to rotate the rotating ring 16. The sliding sleeve 5 is slidably connected to the intercepting disk 4 and the tower shell 1. A third power module is provided on the lower side of the connecting frame 6. The third power module is an electric push rod. The electric push rod is used to control the up and down movement of the connecting frame 6, which is not shown in the figure.

[0037] like Figure 2 and Figure 10 As shown, the rotating assembly includes two L-shaped rods 19 that are centrally symmetrically distributed. Both L-shaped rods 19 are fixed to the lower side of the rotating ring 16. The outer side of the sliding sleeve 5 is provided with two guide grooves that are centrally symmetrically distributed. The L-shaped rods 19 slide in the adjacent guide grooves of the sliding sleeve 5. When the sliding sleeve 5 moves downward, it drives the two L-shaped rods 19 to move downward through the guide grooves on it. The two L-shaped rods 19 drive the diverter block 17 to rotate through the rotating ring 16.

[0038] When the flue gas enters the intake chamber 102, it undergoes preliminary filtration to remove impurities, reducing the amount of impurities adhering to the first filter screen in the ventilation cylinder 3 per unit time, and improving the treatment effect of flue gas. The specific process of flue gas filtration in the intake chamber 102 is as follows: During the process of flue gas entering the intake chamber 102, the operator starts the first power module, which drives the transmission ring 7 to rotate counterclockwise (towards...). Figure 1 (From a top-down perspective), the transmission ring 7 drives the three fixed rods 8 and the second filter screen on them to rotate counterclockwise. Taking the right fixed rod 8 as an example, the fixed rod 8 drives the fixed ring 9, baffle 10, insert rod 11 and guide rod 12 to rotate counterclockwise. During the rotation, the second filter screen on the fixed rod 8 comes into contact with the flue gas in the air intake chamber 102. Impurities in the flue gas in the air intake chamber 102 adhere to the second filter screen on the fixed rod 8. Because the axis of the air inlet 101 is misaligned with the axis of the ventilation cylinder 3, the flue gas entering the air intake chamber 102 rotates clockwise, thus coming into contact with the second filter screen on the fixed rod 8, improving the filtration effect of the flue gas. In the initial state, the insert rod 11 is flush with the upper inner side of the limiting ring 13. The limiting ring 13 does not hinder the rotation of the insert rod 11, and the second filter screen on the fixed rod 8 always remains fully open.

[0039] When the impurity content in the flue gas decreases, the operator rotates the rotating rod of the tower shell 1 through the second power module. The rotating rod of the tower shell 1 drives the two limiting rings 13 to move upward. Taking the upper limiting ring 13 as an example, when the first guide part 14 is flush with the insertion rod 11, the operator stops the second power module, and the limiting ring 13 no longer moves upward. At this time, as the insertion rod 11 continues to rotate, when the insertion rod 11 contacts one of the first guide parts 14, the insertion rod 11 is squeezed by the first guide part 14 and gradually moves closer to the baffle 10. The spring on the insertion rod 11 is compressed, and the insertion rod 11 drives the guide rod 12 towards the baffle 10. Since the guide rod 12 limits the insertion rod 11, the insertion rod 11 cannot rotate on its own. During the process of the insertion rod 11 approaching the baffle 10, the sliding groove of the insertion rod 11 causes the convex ball of the baffle 10 to rotate clockwise. Figure 7(Right view direction) When the insert rod 11 is no longer close to the baffle 10, the baffle 10 changes from a horizontal state to a vertical state. At this time, as the second filter on the fixed rod 8 rotates, the baffle 10, which is in a vertical state, blocks part of the second filter on the fixed rod 8. During the rotation, the baffle 10 intercepts and guides part of the flue gas in the air intake cavity 102 to rotate counterclockwise, so that part of the flue gas enters the air guide hole 301, accelerating the speed at which the flue gas is discharged from the air intake cavity 102. When the insert rod 11 is no longer in contact with the first guide part 14, the spring on the insert rod 11 resets and drives the insert rod 11 away from the baffle 10. The sliding groove of the insert rod 11 drives the baffle 10 to rotate counterclockwise and turn to a horizontal state through the convex ball on the baffle 10, reducing the blocking area of ​​the second filter on the fixed rod 8.

[0040] During the process of the baffle 10 changing from a horizontal to a vertical state, the baffle 10 will collide with the second filter screen on the fixed rod 8, causing the second filter screen on the fixed rod 8 to vibrate, thereby shaking off the impurities on the second filter screen on the fixed rod 8, reducing the impurity content on the second filter screen on the fixed rod 8, and ensuring continuous filtration of flue gas. When the impurity content of the flue gas in the air inlet chamber 102 continues to decrease, the operator will again rotate the rotating rod of the tower shell 1 through the second power module, causing the limiting ring 13 to move downward, and the second guide part 15 and the insertion rod 11 to be on the same horizontal plane. At this time, during the rotation of the second filter screen on the fixed rod 8, the baffle 10 blocks part of the second filter screen on the fixed rod 8 for a longer period of time, and the air guide hole 301 gradually becomes smaller from the air inlet side to the air outlet side, ensuring high pushing force rather than high filtration of flue gas, so that the equipment can make targeted adjustments to the impurity content in the flue gas and improve the flue gas treatment efficiency.

[0041] Impurities shaken off the second filter screen of the fixed rod 8 will accumulate on the lower side of the intake chamber 102. During the counter-clockwise rotation of the fixed rod 8, the fixed rod 8 drives the scraper 801 to rotate counter-clockwise. The scraper 801 causes the impurities on the lower side of the intake chamber 102 to gather towards the center, eventually entering the discharge cavity 104. The impurities entering the discharge cavity 104 will accumulate above the intercepting block 18. Some impurities in contact with the diverting block 17 will be guided by the two inclined surfaces on its upper side into the area above the adjacent intercepting block 18. When it is necessary to adjust the discharge... When cleaning impurities in the material cavity 104, the operator controls the connecting frame 6 to move downward through the third power module. The connecting frame 6 drives the sliding sleeve 5 to move downward. The guide groove on the sliding sleeve 5 causes the two L-shaped rods 19 to rotate clockwise. The two L-shaped rods 19 drive the rotating ring 16 to rotate clockwise. The rotating ring 16 drives the diverting block 17 to rotate clockwise. The diverting block 17 pushes the impurities on the adjacent intercepting block 18 into the space between the two adjacent intercepting blocks 18. The impurities between the two intercepting blocks 18 fall downward along the discharge cavity 104.

[0042] As the sliding sleeve 5 moves downward, when the upper side of the sliding sleeve 5 is lower than the lower side of the rotating ring 16, the lime slurry above the intercepting plate 4 overflows from the upper side of the sliding sleeve 5 and enters the discharge cavity 104. The lime slurry entering the discharge cavity 104 impacts the impurities within, accelerating the discharge of impurities from the discharge cavity 104. When the diverting block 17 is completely positioned above the adjacent intercepting block 18, the operator stops the third power module, and all impurities above the intercepting block 18 are discharged. At this time, the operator controls the connecting frame 6 to move downward through the third power module. The connecting frame 6 moves upward, causing the sliding sleeve 5 to move upward. The sliding sleeve 5 blocks the outside of the intercepting disc 4. The upward movement of the sliding sleeve 5 causes the rotating ring 16 to drive the diverting block 17 to rotate in the opposite direction and reset. The operator stops the third power module. The diverting block 17 continues to block the upper side of the two adjacent intercepting blocks 18. Finally, the lime slurry carrying impurities is discharged from the two drain ports 103. The operator periodically pulls the connecting frame 6 to periodically discharge the impurities in the air intake chamber 102. After the flue gas treatment is completed, the operator shuts off the first power module.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A high-concentration, environmentally friendly flue gas desulfurization and dust removal device, characterized in that: The system includes a tower shell (1) with an air inlet (101). A ventilator (3) is fixed to the upper side of the tower shell (1) via a bracket. A top plate (2) is fixed to the upper side of the ventilator (3). The top plate (2) has an exhaust port (201). A circumferentially distributed liquid spray pipe is provided on the lower side of the top plate (2). The ventilator (3) and the tower shell (1) form an air inlet cavity (102) that communicates with the air inlet (101). A drain valve is provided on the lower side of the tower shell (1) for discharging the liquid inside. The lower part of the inner wall of the ventilation cylinder (3) is provided with a first filter screen for dust removal. The diameter of the lower part of the ventilation cylinder (3) gradually decreases from top to bottom. The lower part of the ventilation cylinder (3) is provided with several groups of air guide holes (301) evenly distributed in the circumference. The air guide holes (301) in the same group are spirally distributed. An interception plate (4) is installed on the lower side of the ventilation cylinder (3). The interception plate (4) and the tower shell (1) are provided with a sliding sleeve (5). A connecting frame (6) is fixedly connected to the lower side of the sliding sleeve (5). It also includes a filtration mechanism, which is disposed on the upper side of the tower shell (1). The filtration mechanism is used to filter impurities in the flue gas in the air intake chamber (102). The filtration mechanism includes a transmission ring (7), which is rotatably connected to the upper side of the tower shell (1). The transmission ring (7) is rotatably connected to the ventilation cylinder (3). The tower shell (1) is provided with a first power module for driving the transmission ring (7) to rotate. The transmission ring (7) is fixedly connected with circumferentially evenly spaced and Fixed rods (8) are all located in the air intake cavity (102). A second filter screen is installed on the fixed rod (8). The second filter screen on the fixed rod (8) is trapezoidal in shape. A scraper (801) located below the second filter screen on the fixed rod (8) is fixedly connected to the fixed rod (8). The scraper (801) is deflected relative to the adjacent second filter screen. The fixed rod (8) is provided with equally spaced air-pushing components. The air-pushing components are used to guide the flue gas in the air intake cavity (102) into the air guide hole (301).

2. The high-concentration environmentally friendly flue gas desulfurization and dust removal equipment according to claim 1, characterized in that: The lower part of the inner wall of the ventilation cylinder (3) is provided with circumferentially evenly distributed guide grooves (302), all of which are spiral in shape, and the diameter of all the air guide holes (301) increases from top to bottom.

3. The high-concentration environmentally friendly flue gas desulfurization and dust removal equipment according to claim 1, characterized in that: The air-pushing component includes a fixed ring (9), which is fixed to the fixed rod (8). The fixed ring (9) is rotatably connected to a baffle (10). The axis of the air inlet (101) is misaligned with the axis of the air cylinder (3). The baffle (10) is slidably and rotatably connected to an insert rod (11). The axis of the insert rod (11) coincides with the rotation axis of the baffle (10). A spring is fixed between the insert rod (11) and the baffle (10). The insert rod (11) is fixedly connected to a guide rod (12) that is slidably connected to the fixed ring (9). The insert rod (11) is provided with a groove. The baffle (10) is provided with a convex ball that slides in the groove of the insert rod (11).

4. A high-concentration environmentally friendly flue gas desulfurization and dust removal device according to claim 3, characterized in that: It also includes equally spaced limiting rings (13), the number of which is equal to the number of the fixing rings (9) on the same fixing rod (8). The limiting rings (13) are slidably connected to the inner wall of the tower shell (1). The middle part of the inner wall of the limiting rings (13) is provided with a circumferentially distributed first guide part (14), and the lower part of the inner wall of the limiting rings (13) is provided with a circumferentially distributed second guide part (15). The first guide part (14) and the second guide part (15) are both used to limit the insertion rod (11). The number of the first guide part (14) and the second guide part (15) is equal. The tower shell (1) is rotatably connected to a rotating rod that is threadedly connected to all the limiting rings (13). The lower side of the rotating rod of the tower shell (1) is provided with a second power module for driving its rotation.

5. A high-concentration environmentally friendly flue gas desulfurization and dust removal device according to claim 4, characterized in that: The arc length of the second guide portion (15) is greater than the arc length of the first guide portion (14).

6. A high-concentration environmentally friendly flue gas desulfurization and dust removal device according to claim 4, characterized in that: The side of the air guide hole (301) closest to the outer wall of the air cylinder (3) is the air inlet side, and the side of the air guide hole (301) closest to the inner wall of the air cylinder (3) is the air outlet side. The diameter of the air guide hole (301) gradually decreases from the air inlet side to the air outlet side.

7. A high-concentration environmentally friendly flue gas desulfurization and dust removal device according to claim 6, characterized in that: It also includes a discharge assembly, which is disposed on the lower side of the tower shell (1). The discharge assembly is used to discharge impurities in the air inlet cavity (102). The discharge assembly includes a rotating ring (16), which is rotatably connected to the outside of the ventilation cylinder (3). The tower shell (1), the sliding sleeve (5), and the rotating ring (16) together form a discharge cavity (104) communicating with the air inlet cavity (102). The discharge cavity (104) is connected to the drain port (103). The discharge cavity (104) is connected to the lower side of the ventilation cylinder (3). The rotating ring (16) is rotatably connected to the outside of the ventilation cylinder (3). 6) A diversion block (17) is fixedly connected to the discharge cavity (104) with equal circumferential spacing. An interception block (18) is fixedly connected to the tower shell (1) with equal circumferential spacing and located in the discharge cavity (104). The diversion block (17) with equal circumferential spacing is located on the upper side of the interception block (18) with equal circumferential spacing and is staggered. A rotating component is provided on the outer side of the rotating ring (16). The rotating component is used to rotate the rotating ring (16). The sliding sleeve (5) is slidably connected to the interception disk (4) and the tower shell (1). A third power module is provided on the lower side of the connecting frame (6).

8. A high-concentration environmentally friendly flue gas desulfurization and dust removal device according to claim 7, characterized in that: The upper part of the diversion block (17) is provided with symmetrically distributed inclined surfaces.

9. A high-concentration environmentally friendly flue gas desulfurization and dust removal device according to claim 7, characterized in that: The rotating assembly includes centrally symmetrically distributed L-shaped rods (19), all of which are fixed to the lower side of the rotating ring (16). The outer side of the sliding sleeve (5) is provided with centrally symmetrically distributed guide grooves, and the L-shaped rods (19) slide in the guide grooves adjacent to the sliding sleeve (5).

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