Limestone-gypsum-method flue gas desulfurization and dust removal device

Abstract

The invention belongs to the technical field of flue gas desulfurization, and particularly relates to a limestone-gypsum-method flue gas desulfurization and dust removal device which comprises a tower body, the middle of the tower body is of a hollow structure, a flue gas inlet is formed in one side of the tower body, an exhaust port is formed in the upper end of the tower body, and a spraying device is arranged at the upper end in the tower body. The spraying device comprises a first round pipe arranged at the upper end of the middle of the tower body, a plurality of second round pipes are fixedly connected to the two sides of the first round pipe respectively, the first round pipe is communicated with the interiors of the second round pipes, a plurality of spraying heads are fixedly connected to the lower ends of the second round pipes respectively, and a first circular ring is arranged at the lower end of the spraying device. The first circular ring is fixedly connected with the inner wall of the tower body, and a plurality of elastic pieces are rotationally arranged in the middle of the first circular ring, so that the problem that the flue gas is not thoroughly desulfurized due to the fact that the flue gas is exhausted without reacting with the limestone slurry because the limestone slurry is sprayed to desulfurize the flue gas and the contact time of the flue gas and the limestone slurry is relatively short is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas desulfurization, in particular to a limestone gypsum flue gas desulfurization and dust removal device. Background Art

[0002] Exhaust gas will be generated when boilers and other institutions are in use, and the exhaust gas will contain a large amount of sulfur. When the sulfur-containing gas is directly discharged into the air, when the sulfur-containing gas encounters moisture in the air, the moisture will be turned into acid water and form acid rain, which will cause serious harm to the environment. In order to ensure the sustainable development of the environment, desulfurization equipment is needed to desulfurize and remove dust from the flue gas before discharge.

[0003] A patent with publication number CN214764528U discloses a flue gas desulfurization device for calcined tail gas using a limestone gypsum method. By setting a fixed plate, the lime slurry injected into the outer shell through the lime slurry inlet pipe can be evenly spread. By setting an atomizing nozzle, the lime slurry on the top of the fixed plate can be perfectly atomized and evenly sprayed in the outer shell, avoiding the situation that the gas input from the calcined tail gas inlet pipe cannot fully contact with the lime slurry, thereby increasing the desulfurization effect of the device. By setting a desulfurization circulation pump, calcium sulfite is circulated to generate high-quality gypsum, thereby greatly increasing the economic benefits of the user.

[0004] In the above-mentioned prior art, limestone slurry is sprayed downward, and the flue gas floating upward is neutralized with the sprinkled limestone slurry. Since the contact time between the sprayed limestone slurry and the flue gas is short, the upward trajectory of the flue gas is irregular, and the flue gas may be discharged without reacting with the limestone slurry, resulting in incomplete flue gas desulfurization, and a small amount of sulfur-containing flue gas may be discharged into the air.

[0005] To this end, the present invention provides a limestone gypsum flue gas desulfurization and dust removal device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a limestone gypsum flue gas desulfurization and dust removal device described in the present invention comprises a tower body, the middle part of the tower body is a hollow structure, a smoke inlet is arranged on one side of the tower body, an exhaust port is opened at the upper end of the tower body, a spray device is arranged at the upper end of the interior of the tower body, the spray device comprises a first circular tube arranged at the upper end of the middle part of the tower body, a plurality of second circular tubes are respectively fixedly connected on both sides of the first circular tube, the first circular tube is communicated with the interior of the plurality of second circular tubes, a plurality of nozzles are respectively fixedly connected at the lower end of the second circular tube, a first circular ring is arranged at the lower end of the spray device, the first circular ring is fixedly connected to the inner wall of the tower body, a rotating assembly is respectively arranged at the upper and lower ends of the middle part of the first circular ring, the rotating assembly comprises a plurality of spring pieces rotatably arranged in the middle part of the first circular ring, the plurality of spring pieces are in an inclined state, cylindrical bars are respectively fixedly connected in the middle part of the spring pieces, and the cylindrical bars are respectively rotatably connected to the middle part of the first circular ring through torsion springs.

[0008] Preferably, a plurality of first circular tubes are provided in the middle of the tower body, and the plurality of first circular tubes are arranged inside the tower body from top to bottom, and each of the first circular tubes has a different angle.

[0009] Preferably, one end of the first circular tube passes through one side of the tower body, the ends of the first circular tube are fixedly connected with L-shaped pipes, a plurality of first circular tubes are connected to the inside of the L-shaped pipes, and one end of the L-shaped pipes away from the first circular tube passes through one side of the lower end of the tower body.

[0010] Preferably, a circular pipe is provided on the outer side of the lower end of the tower body, a plurality of water inlet pipes are fixedly connected to the middle of the circular pipe, the circular pipe is communicated with the inside of the water inlet pipes, the water inlet pipes respectively pass through the outer side of the tower body, a third pipe is fixedly connected to one side of the circular pipe, and the circular pipe is communicated with the inside of the third pipe.

[0011] Preferably, stirring rods are respectively provided at the lower ends of the plurality of water inlet pipes, and the stirring rods are rotatably connected to the inner wall of the tower body, and a plurality of stirring blades are respectively fixedly connected around the stirring rods away from the end of the tower body.

[0012] Preferably, an inclined plate is fixedly provided at the lower end of the tower body, and the inclined plate is in an inclined state.

[0013] Preferably, a rectangular box is provided on one side of the lower end of the tower body, the tower body is communicated with the inside of the rectangular box, a filter plate is installed in the middle of the rectangular box, and a rectangular hole is opened on the side of the rectangular box away from the tower body.

[0014] Preferably, a water pump is fixedly connected to one side of the lower end of the rectangular box through a connecting pipe, one side of the water pump is fixedly connected to one side of the tower body through a U-shaped pipe, and the U-shaped pipe is connected to the inside of the tower body.

[0015] Preferably, a defogger assembly is provided inside the upper end of the tower body, and the defogger assembly comprises a second circular ring fixedly connected to the inside of the tower body, a plurality of corrugated plates are fixedly connected to the middle of the second circular ring, and gaps are provided between two adjacent corrugated plates.

[0016] Preferably, a liquid inlet is fixedly connected to one side of the tower body, an electric valve is installed in the middle of the upper end of the liquid inlet, and a liquid level detector is installed on the side of the smoke inlet close to the inside of the tower body.

[0017] The beneficial effects of the present invention are as follows: 1. The limestone gypsum flue gas desulfurization and dust removal device described in the present invention has a plurality of spring plates rotating in the middle of the first ring. When the mud falls on the upper end of the spring plates, the spring plates rotate to accumulate part of the limestone slurry between the upper and lower layers of the spring plates. Then the lower spring plates rotate to form a closed space in the middle between the two rows of spring plates. The flue gas must come into contact with the limestone slurry when floating upward, which solves the problem that when the flue gas is desulfurized and dusted by spraying limestone slurry, the contact time between the flue gas and the limestone slurry is short. In addition, the flue gas has an irregular upward floating trajectory, so the flue gas may be discharged without reacting with the limestone slurry, thereby resulting in incomplete desulfurization of the flue gas.

[0018] 2. The limestone-gypsum flue gas desulfurization and dust removal device described in the present invention has a plurality of corrugated plates at the lower end of the exhaust port, and the mist is discharged from between the corrugated plates. Since the side of the corrugated plates has corrugated lines, the mist floats upward and changes direction several times. The mist droplets are thrown onto the side walls of the corrugated plates under the action of inertia and centrifugal force, thereby achieving gas-liquid separation. The small droplets on the side walls of the corrugated plates gather into large droplets, which fall by gravity, thereby defogging the flue gas and preventing moisture containing impurities from being discharged with the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention; Figure 2 It is a schematic diagram of the interior of the tower section; Figure 3 is a schematic cross-sectional view of the first circular ring; Figure 4 It is a schematic diagram of the structure of the spray assembly; Figure 5 It is a schematic diagram of the position of the inclined plate; Figure 6 is a schematic cross-sectional view of the second circular ring; In the figure: 1. tower body; 11. smoke inlet; 12. exhaust port; 13. first circular ring; 131. spring piece; 132. cylindrical bar; 14. first circular tube; 141. L-shaped pipe; 142. second circular tube; 143. nozzle; 15. inclined plate; 16. circular pipe; 161. water inlet pipe; 162. third pipe; 163. stirring rod; 164. stirring blade; 17. second circular ring; 171. wave plate; 18. liquid level detector; 19. liquid inlet; 191. electric valve; 2. rectangular box; 21. filter plate; 22. water pump; 23. U-shaped pipe; 24. rectangular hole. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] Embodiment 1 like Figure 1-Figure 3 As shown, a limestone gypsum flue gas desulfurization and dust removal device according to an embodiment of the present invention comprises a tower body 1, the middle part of the tower body 1 is a hollow structure, a smoke inlet 11 is arranged on one side of the tower body 1, an exhaust port 12 is opened at the upper end of the tower body 1, a spray device is arranged at the upper end of the tower body 1, and the spray device comprises a first circular tube 14 arranged at the upper end of the middle part of the tower body 1, a plurality of second circular tubes 142 are fixedly connected to both sides of the first circular tube 14, the first circular tube 14 is connected to the inside of the plurality of second circular tubes 142, and the second circular tubes 142 are connected to the inside of the first circular tube 14. A plurality of nozzles 143 are fixedly connected to the lower end of the circular tube 142, and a first circular ring 13 is arranged at the lower end of the spray device. The first circular ring 13 is fixedly connected to the inner wall of the tower body 1, and a rotating assembly is respectively arranged at the upper and lower ends of the middle part of the first circular ring 13, and the rotating assembly includes a plurality of spring pieces 131 rotatably arranged in the middle part of the first circular ring 13, and the plurality of spring pieces 131 are all in an inclined state, and a cylindrical bar 132 is respectively fixedly connected to the middle part of the spring piece 131, and the cylindrical bar 132 is rotatably connected to the middle part of the first circular ring 13 through a torsion spring.

[0023] Specifically, when a large thermal power plant is working, a large amount of flue gas is generated. The flue gas generated is not only of high temperature, but also contains a large amount of sulfide and pollutant particles. Sulfide rainwater will turn water into acid. Flue gas directly discharged into the air will cause acid rain, which will cause serious pollution to the environment. It is necessary to desulfurize and remove dust from the flue gas before discharging. When the limestone gypsum method is used to desulfurize and remove dust from the flue gas, limestone slurry is mixed with the flue gas. The limestone slurry is alkaline and can neutralize the sulfur in the flue gas. The flue gas is first discharged into the tower through the smoke inlet 11. 1, then the limestone slurry is introduced into the first circular tube 14 and then sprayed out from the nozzle 143. As the flue gas floats upward, the flue gas floats upward and merges with the falling limestone slurry. Then the limestone slurry falls on the lower end of the tower body 1. The desulfurized flue gas is then discharged from the exhaust port 12. The flue gas is desulfurized and dusted by spraying. The contact time between the sprayed limestone slurry and the flue gas is short, and the upward drifting trajectory of the flue gas is irregular. The flue gas may be discharged without reacting with the limestone slurry, resulting in incomplete desulfurization of the flue gas. When the present invention is used, the smoke is discharged into the bottom end of the tower body 1, and the smoke flows upward inside the tower body 1. The limestone slurry sprayed by the nozzle 143 first falls on the upper end of the spring piece 131. The initial state of a number of adjacent spring pieces 131 is a tightly fitted state. When the limestone slurry falls on the upper end of the spring piece 131, it then flows between the spring pieces 131 along the hypotenuse of the spring piece 131. Then, each spring piece 131 rotates and rotates. Both ends of the spring piece 131 close to the first circular ring 13 are provided with elastic materials, which can be tightly fitted with the inner edge of the first circular ring 13. When the spring piece 131 rotates, the elastic material is deformed and always tightly fitted with the inner edge of the first circular ring 13 during rotation. When the upper spring piece 131 rotates, the limestone slurry falls into the upper end of the lower spring piece 131, and the lower spring piece 1 31 can rotate only when more limestone slurry is accumulated above the upper and lower rows of shrapnel 131. At this time, there is a certain amount of limestone slurry between the upper and lower rows of shrapnel 131. At the same time, the flue gas floats upward from the bottom along the gap between the lower row of shrapnel 131. The limestone slurry forms a closed space in the middle between the two rows of shrapnel 131. The flue gas must contact the limestone mud to float upward, and push the limestone slurry upward, and fully react with the limestone slurry between the upper and lower rows of shrapnel 131, and then be discharged from the exhaust port 12. This solves the problem that when desulfurization and dust removal of flue gas is carried out by spraying limestone slurry, the contact time between the flue gas and the limestone slurry is short, and the flue gas may be discharged without reacting with the limestone slurry due to the irregular upward floating trajectory of the flue gas, thereby resulting in incomplete desulfurization of the flue gas.

[0024] like Figure 4 As shown, in this embodiment, a plurality of first circular tubes 14 are disposed in the middle of the tower body 1 , and the plurality of first circular tubes 14 are arranged inside the tower body 1 from top to bottom, and the angles of the plurality of first circular tubes 14 are different.

[0025] Specifically, a plurality of first circular tubes 14 are arranged in an up-and-down staggered manner in the tower body 1, so that the limestone slurry sprayed in the tower body 1 can be more uniform, and the limestone slurry falling on the shrapnel 131 can be more uniform, and several shrapnel 131 above can be rotated at the same time, so as to facilitate the downward flow of the limestone slurry and the upward discharge of the smoke.

[0026] like Figure 2 , Figure 4 As shown, in this embodiment, one end of the first circular tube 14 passes through one side of the tower body 1, and the ends of the first circular tube 14 are fixedly connected with L-shaped pipes 141. Several first circular tubes 14 are respectively connected to the inside of the L-shaped pipe 141, and the end of the L-shaped pipe 141 away from the first circular tube 14 passes through one side of the lower end of the tower body 1.

[0027] Specifically, before work, limestone slurry is filled at the lower end of the tower body 1 to prevent smoke from being discharged from below. The limestone slurry inside the tower body 1 is extracted through a plurality of L-shaped pipes 141 and then sprayed out from the nozzle 143. The sprayed limestone slurry falls at the lower end of the tower body 1 and can be recycled.

[0028] like Figure 5 As shown, a circular pipe 16 is provided on the outer side of the lower end of the tower body 1 described in this embodiment, and a plurality of water inlet pipes 161 are fixedly connected to the middle of the circular pipe 16. The circular pipe 16 is communicated with the inside of the water inlet pipes 161. The water inlet pipes 161 respectively pass through the outer side of the tower body 1. A third pipe 162 is fixedly connected to one side of the circular pipe 16, and the circular pipe 16 is communicated with the inside of the third pipe 162.

[0029] Specifically, after the limestone slurry after the fusion reaction with the flue gas falls into the lower end of the tower body 1, oxygen is discharged into the third pipe 162, and the oxygen enters the annular pipe 16 and enters the tower body 1 through the water inlet pipe 161, and fuses with the limestone slurry inside the tower body 1, causing the limestone to be oxidized into dihydrate gypsum and precipitated to the lower end of the tower body 1. The generated dihydrate gypsum is taken out and dried, and can be converted into anhydrous gypsum for recycling.

[0030] like Figure 5 As shown, in this embodiment, stirring rods 163 are respectively provided at the lower ends of the plurality of water inlet pipes 161. The stirring rods 163 are rotatably connected to the inner wall of the tower body 1. A plurality of stirring blades 164 are respectively fixedly connected around the ends of the stirring rods 163 away from the tower body 1.

[0031] Specifically, when oxygen is discharged into the limestone slurry at the lower end of the tower body 1 through the water inlet pipe 161, the stirring rod 163 is driven to rotate, and the stirring blades 164 are driven to rotate. The stirring blades 164 are arranged at the upper end of the water inlet pipe 161, which can accelerate the fusion of oxygen and limestone slurry and accelerate the reaction process.

[0032] like Figure 5 As shown, the lower end of the tower body 1 in this embodiment is fixedly provided with an inclined plate 15, and the inclined plate 15 is in an inclined state.

[0033] Specifically, the limestone slurry forms sediment after reacting with oxygen, and the sediment slides downward along the inclined plate 15, which is convenient for collection, while preventing the stirring blades 164 from rotating and causing the formed sediment to rotate and float upward, causing the L-shaped pipe 141 to be blocked.

[0034] like Figure 5 As shown, a rectangular box 2 is felt at one side of the lower end of the tower body 1 in this embodiment, the tower body 1 is connected to the inside of the rectangular box 2, a filter plate 21 is installed in the middle of the rectangular box 2, and a rectangular hole 24 is opened on the side of the rectangular box 2 away from the tower body 1.

[0035] Specifically, the limestone slurry forms a precipitate after reacting with oxygen, and flows along the inclined plate 15 to the upper end of the filter plate 21 inside the rectangular box 2. The precipitate passes through the filter plate 21 and remains on the upper end of the filter plate 21. The remaining water flows to the lower end of the rectangular box 2, and then the precipitate on the upper end of the filter plate 21 can be taken out through the rectangular hole 24.

[0036] like Figure 5 As shown, in this embodiment, a water pump 22 is fixedly connected to one side of the lower end of the rectangular box 2 through a connecting pipe, and one side of the water pump 22 is fixedly connected to one side of the tower body 1 through a U-shaped pipe 23, and the U-shaped pipe 23 is connected to the inside of the tower body 1.

[0037] Specifically, the filtered limestone slurry flows to the lower end of the rectangular box 2, and then the water pump 22 is started to pump out the limestone slurry in the rectangular box 2, and then it is discharged into the tower body 1 through the U-shaped pipe 23 for reuse.

[0038] like Figure 6 As shown, a defogger assembly is provided inside the upper end of the tower body 1 described in this embodiment, and the defogger assembly includes a second ring 17 fixed to the inside of the tower body 1, a plurality of corrugated plates 171 are fixed to the middle of the second ring 17, and gaps are provided between two adjacent corrugated plates 171.

[0039] Specifically, due to the high temperature of the flue gas, mist is formed after the flue gas contacts the limestone slurry. The mist contains water, and the water contains impurities. Demisting is required to prevent the water containing impurities from being discharged. When using the present invention, a plurality of wave plates 171 are provided at the lower end of the exhaust port 12, and the mist is discharged from between the wave plates 171. Since the side of the wave plates 171 is provided with wave lines, the mist floats upward and changes direction several times. The mist droplets are thrown onto the side walls of the wave plates 171 under the action of inertia and centrifugal force, thereby realizing gas-liquid separation. The small droplets on the side walls of the wave plates 171 gather into large particle droplets, which fall by gravity, and the flue gas can be demisted.

[0040] Embodiment 2 like Figure 1-Figure 2 As shown, compared with Example 1, another implementation of the present invention is: a liquid inlet 19 is fixedly connected to one side of the tower body 1, an electric valve 191 is installed in the middle of the upper end of the liquid inlet 19, and a liquid level detector 18 is installed on the side of the smoke inlet 11 close to the inside of the tower body 1.

[0041] Specifically, after the reaction, the limestone slurry contained in the tower body 1 will gradually decrease, and the amount of limestone slurry inside the tower body 1 is detected by the liquid level detector 18. When it is detected that the limestone slurry level in the tower body 1 is low, the electric valve 191 is driven to allow the liquid inlet 19 to circulate inside, and the limestone slurry is added to the tower body 1 through the liquid inlet 19.

[0042] Working principle: Before work, limestone slurry is canned at the lower end of the tower body 1 to prevent smoke from being discharged from the bottom. The limestone slurry inside the tower body 1 is extracted through a plurality of L-shaped pipes 141 and then enters the first circular tube 14. A plurality of first circular tubes 14 are arranged in an up-and-down staggered manner in the tower body 1, so that the limestone slurry sprayed in the tower body 1 can be more uniform. When the limestone slurry falls on the upper end of the shrapnel 131, it then flows between the shrapnel 131 along the oblique edge of the shrapnel 131, and then each shrapnel 131 rotates. When the shrapnel 131 rotates, the elastic material is deformed and always tightly adheres to the inner edge of the first circular ring 13 during rotation. When the upper spring piece 131 rotates, the limestone slurry falls into the upper end of the lower spring piece 131. The lower spring piece 131 can rotate only when a large amount of limestone slurry is accumulated above the lower spring piece 131. At this time, there is a certain amount of limestone slurry between the upper and lower rows of spring pieces 131. At the same time, the smoke floats upward from the bottom along the gap between the lower row of spring pieces 131. The limestone slurry forms a closed space in the middle between the two rows of spring pieces 131. The smoke must come into contact with the limestone slurry when floating upward, and push the limestone slurry upward, and fully react with the limestone slurry between the upper and lower rows of spring pieces 131, and then be discharged from the exhaust port 12. After the limestone slurry after the fusion reaction with the flue gas falls into the lower end of the tower body 1, oxygen is discharged into the third pipe 162, and the oxygen enters the annular pipe 16 and enters the tower body 1 through the water inlet pipe 161, and fuses with the limestone slurry inside the tower body 1, which will oxidize the limestone into dihydrate gypsum. By driving the stirring rod 163 to rotate, the stirring rod 163 drives the stirring blade 164 to rotate. The stirring blade 164 is arranged at the upper end of the water inlet pipe 161, which can accelerate the fusion of oxygen and limestone slurry, accelerate the reaction process, and precipitate to the lower end of the tower body 1. The generated dihydrate gypsum is taken out for drying, which can be converted into anhydrous gypsum and can be recycled; The limestone slurry after reacting with oxygen forms a precipitate, which flows along the inclined plate 15 to the upper end of the filter plate 21 inside the rectangular box 2. The precipitate passes through the filter plate 21 and remains on the upper end of the filter plate 21. The remaining water flows to the lower end of the rectangular box 2. Then, the precipitate on the upper end of the filter plate 21 can be taken out through the rectangular hole 24. The filtered limestone slurry flows to the lower end of the rectangular box 2. Then, the water pump 22 is started to extract the limestone slurry inside the rectangular box 2 and re-discharge it into the tower body 1 through the U-shaped pipe 23 for reuse. Since the flue gas temperature is relatively high, mist will be formed after the flue gas contacts the limestone slurry. The mist contains water, and the water contains impurities. Therefore, demisting is required to prevent the water containing impurities from being discharged. When using the present invention, a plurality of wave plates 171 are provided at the lower end of the exhaust port 12, and the mist is discharged from between the wave plates 171. Since the wave plates 171 are provided with wave lines on the sides, the mist floats upward and changes direction several times. The mist droplets are thrown onto the side walls of the wave plates 171 under the action of inertia and centrifugal force, thereby achieving gas-liquid separation. The small droplets on the side walls of the wave plates 171 gather into large particle droplets, which fall down by gravity, and the flue gas can be demisted. After the reaction, the limestone slurry contained in the tower body 1 will gradually decrease. The amount of limestone slurry inside the tower body 1 is detected by the liquid level detector 18. When the limestone slurry level in the tower body 1 is detected to be low, the electric valve 191 is driven to allow the liquid inlet 19 to circulate inside, and the limestone slurry is added to the tower body 1 through the liquid inlet 19.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A limestone-gypsum flue gas desulfurization and dust removal device, Features: The tower body (1) comprises a tower body (1), wherein the middle part of the tower body (1) is a hollow structure, a smoke inlet (11) is provided on one side of the tower body (1), an exhaust port (12) is provided at the upper end of the tower body (1), a spray device is provided at the upper end of the interior of the tower body (1), and the spray device comprises a first circular tube (14) provided at the upper end of the middle part of the tower body (1), a plurality of second circular tubes (142) are fixedly connected to both sides of the first circular tube (14), the first circular tube (14) is communicated with the interior of the plurality of second circular tubes (142), and the lower ends of the second circular tubes (142) are respectively fixedly connected to A plurality of spray heads (143), wherein a first circular ring (13) is disposed at the lower end of the spray device, the first circular ring (13) being fixedly connected to the inner wall of the tower body (1), a rotating assembly being respectively disposed at the upper and lower ends of the middle portion of the first circular ring (13), the rotating assembly comprising a plurality of spring pieces (131) rotatably disposed at the middle portion of the first circular ring (13), the plurality of spring pieces (131) being all in an inclined state, the middle portions of the spring pieces (131) being respectively fixedly connected to cylindrical bars (132), the cylindrical bars (132) being rotatably connected to the middle portion of the first circular ring (13) via torsion springs.

2. A limestone-gypsum flue gas desulfurization and dust removal device according to claim 1, Features: A plurality of first circular tubes (14) are provided in the middle of the tower body (1), and the plurality of first circular tubes (14) are arranged inside the tower body (1) from top to bottom, and each of the first circular tubes (14) has a different angle.

3. A limestone-gypsum flue gas desulfurization and dust removal device according to claim 2, Features: One end of the first circular tube (14) passes through one side of the tower body (1), and the ends of the first circular tube (14) are respectively fixedly connected to L-shaped pipes (141). A plurality of first circular tubes (14) are respectively connected to the inside of the L-shaped pipes (141), and one end of the L-shaped pipes (141) away from the first circular tube (14) passes through one side of the lower end of the tower body (1).

4. A limestone-gypsum flue gas desulfurization and dust removal device according to claim 1, Features: A circular pipe (16) is provided on the outer side of the lower end of the tower body (1), a plurality of water inlet pipes (161) are fixedly connected to the middle of the circular pipe (16), the circular pipe (16) is communicated with the inside of the water inlet pipes (161), the water inlet pipes (161) respectively penetrate the outside of the tower body (1), a third pipe (162) is fixedly connected to one side of the circular pipe (16), and the circular pipe (16) is communicated with the inside of the third pipe (162).

5. A limestone-gypsum flue gas desulfurization and dust removal device according to claim 4, Features: A stirring rod (163) is respectively provided at the lower end of the plurality of water inlet pipes (161), and the stirring rods (163) are respectively rotatably connected to the inner wall of the tower body (1), and a plurality of stirring blades (164) are respectively fixedly connected around the end of the stirring rod (163) away from the tower body (1).

6. A limestone-gypsum flue gas desulfurization and dust removal device according to claim 1, Features: The lower end of the tower body (1) is provided with an inclined plate (15) fixedly connected thereto, and the inclined plate (15) is in an inclined state.

7. A limestone-gypsum flue gas desulfurization and dust removal device according to claim 6, Features: A rectangular box (2) is provided on one side of the lower end of the tower body (1); the tower body (1) is connected to the interior of the rectangular box (2); a filter plate (21) is installed in the middle of the rectangular box (2); and a rectangular hole (24) is provided on a side of the rectangular box (2) away from the tower body (1).

8. A limestone-gypsum flue gas desulfurization and dust removal device according to claim 7, Features: A water pump (22) is fixedly connected to one side of the lower end of the rectangular box (2) via a connecting pipe, one side of the water pump (22) is fixedly connected to one side of the tower body (1) via a U-shaped pipe (23), and the U-shaped pipe (23) is in communication with the interior of the tower body (1).

9. A limestone-gypsum flue gas desulfurization and dust removal device according to claim 1, Features: A demisting assembly is provided inside the upper end of the tower body (1), the demisting assembly comprising a second circular ring (17) fixedly connected to the inside of the tower body (1), a plurality of corrugated plates (171) being fixedly connected to the middle of the second circular ring (17), and a gap is provided between two adjacent corrugated plates (171).

10. A limestone-gypsum flue gas desulfurization and dust removal device according to claim 1, Features: A liquid inlet (19) is fixedly connected to one side of the tower body (1), an electric valve (191) is installed in the middle of the upper end of the liquid inlet (19), and a liquid level detector (18) is installed on the side of the smoke inlet (11) close to the inside of the tower body (1).

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