Limestone-gypsum method flue gas desulfurization device

Abstract

The invention relates to the technical field of desulfurization devices, and discloses a limestone-gypsum method flue gas desulfurization device which comprises a barrel body used for containing limestone slurry which completely absorbs sulfur dioxide. When a detection assembly detects that the viscosity of the top and the bottom of slurry is enough, hydraulic oil can enter the top space of a storage cylinder, along with continuous entering of the hydraulic oil, a piston plate moves downwards, the piston plate drives a driving column to move downwards through a connecting rod, and the driving column is matched with a driving groove, so that the viscosity of the top and the bottom of the slurry is improved. According to the device, when the slurry is in the oxidation stage, the oxygen can be automatically closed according to the oxidation degree of the top and the bottom of the slurry, the situation that excessive sulfuric acid is generated due to excessive oxidation is avoided, and the oxidation efficiency of the slurry is improved. The purity of the crystallized gypsum is ensured, and the quality of the gypsum is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of desulfurization devices, in particular to a limestone-gypsum flue gas desulfurization device. Background Art

[0002] Fossil fuel use is a major source of emissions of gaseous pollutants such as CO2, SO2, and NOx, posing a serious threat to human health and environmental safety. To address SO2 emissions, oxyfuel combustion technology utilizes the well-established and widely used limestone-gypsum wet flue gas desulfurization (FGD) technology from conventional air combustion. Limestone-gypsum wet FGD uses inexpensive limestone as the desulfurization absorbent. The limestone is crushed and ground into a powder, then mixed with water to form an absorbent slurry. During the absorption phase, the slurry is countercurrently exposed to flue gas. The Ca(OH)2 in the lime slurry reacts with SO2 in the water to neutralize it, initially producing calcium sulfite (CaSO3) and water. During the oxidation phase, under forced oxidation conditions (with the addition of air or oxygen), the calcium sulfite further oxidizes and crystallizes, ultimately producing calcium sulfate dihydrate (CaSO4·2H2O, also known as gypsum).

[0003] During the oxidation stage of the existing device, in order to ensure that oxygen and the slurry are fully in contact, oxygen will enter from the bottom of the slurry and then mix and react with it. As the slurry gradually crystallizes into gypsum with the mixing of oxygen, it will consume the water inside the slurry. At the same time, the solid crystals increase significantly, making the slurry more and more viscous. Therefore, when oxygen enters the viscous slurry, it cannot be dispersed into the upper slurry in time. As a result, the slurry in the lower layer has completely crystallized, while the slurry in the upper layer has not yet been completely oxidized and crystallized. At this time, if oxygen is still continuously introduced, the slurry will be over-oxidized, thereby producing excessive sulfuric acid (H2SO4), resulting in lower purity of the crystallized gypsum and affecting the quality of the gypsum. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a limestone-gypsum flue gas desulfurization device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A limestone-gypsum flue gas desulfurization device, comprising: The barrel is used to hold the limestone slurry that has absorbed the sulfur dioxide; The rod body is rotatably mounted on the top wall of the barrel body. The interior of the rod body is hollow and is used for supporting and mounting various components. The top end of the rod body passes through the upper surface of the barrel body and is provided with an opening for introducing oxygen; Multiple air outlet pipes, each of which has multiple air outlet holes formed on its lower surface, are arranged at the bottom of the rod body and communicate with the interior thereof, and are used to deliver oxygen to the bottom of the slurry through the air outlet pipes and the air outlet holes on the outer surface; An air delivery component, used for delivering oxygen to the interior of the air outlet pipe, wherein the air delivery component is arranged between the rod body and the air outlet pipe; A detection component is used to detect the crystallization degree of the upper layer and the lower layer of the slurry, and the detection component is arranged inside the rod body; The control component is used to open or close the air supply component. The control component is arranged inside the rod body and is used in conjunction with the detection component.

[0006] As a further solution of the present invention, a feed valve is fixedly installed on the top of the barrel body, a drive motor is fixedly installed on the top of the barrel body, the output end of the drive motor passes through the top wall of the barrel body and is fixedly installed with a drive gear, a driven gear is fixedly installed on the outer surface of the rod body near the drive gear, the drive gear is meshed with the driven gear, and a discharge valve is fixedly installed on the bottom end of the barrel body.

[0007] As a further solution of the present invention, the air supply assembly includes: a rotary joint, which is fixedly connected to the inner wall of the opening at the top of the rod body, a circular hole is opened at the bottom end of the rod body, and a T-shaped cylinder is slidably installed on the inner wall of the circular hole. The cross-section of the T-shaped cylinder is T-shaped, and the bottom end of the T-shaped cylinder passes through the lower surface of the rod body and is fixedly installed with a column, and multiple air outlet pipes are fixedly installed on the outer surface of the column, and multiple air outlet pipes are connected with the interior of the rod body through the column and the T-shaped cylinder. A limiting strip is set on the circumferential outer surface of the T-shaped cylinder, and a limiting groove matching the limiting strip is opened on the inner wall of the circular hole, and the limiting strip is slidably installed on the inner wall of the limiting groove.

[0008] As a further solution of the present invention, a hollow rod is inserted into the interior of each of the plurality of air outlet pipes, and both ends of the hollow rod are through-set. A plurality of plugs are fixedly installed at equal intervals on the outer surface of the hollow rod, and the number of the plugs is the same as the number of air outlet holes. A plurality of exhaust holes are provided on the outer surface of the hollow rod, and the plurality of exhaust holes are respectively provided between two adjacent plugs, and the number of the exhaust holes is one less than the number of the plugs. An air inlet hole is provided through the outer surface of the adjacent end of each of the plurality of hollow rods.

[0009] As a further solution of the present invention, the detection assembly includes: two ring bodies, the two ring bodies are symmetrically sleeved on the outer surface of the rod body and rotatably installed therewith, the outer surfaces of the two ring bodies are fixedly mounted with multiple stirring blades for mixing and stirring during slurry oxidation, the inner walls of the two ring bodies are symmetrically fixedly mounted with two protrusions, the outer surface of the rod body is provided with two groups of through grooves aligned up and down in a group of two, the two protrusions are respectively slidably installed with the inner walls of a group of two through grooves, the outer surface of one side of a group of two protrusions is fixedly mounted with an arc column, the inner walls of the two groups of through grooves are fixedly mounted with an arc cylinder, the other end of the arc column is inserted into the interior of the arc cylinder and slidably installed with the inner wall of the arc cylinder, the outer surface of the two arc columns in the upper group is sleeved with a first spring, and the outer surface of the two arc columns in the lower group is sleeved with a second spring, the elastic force of the first spring is smaller than that of the second spring, and the arc cylinder and the arc column are arranged at the same center of a circle as the rod body.

[0010] As a further solution of the present invention, the control assembly includes: a storage cylinder, which is fixedly mounted on the upper surface of the T-shaped cylinder, with the port of the storage cylinder facing downward, and four connecting tubes fixedly connected to the top of the storage cylinder, the other ends of the four connecting tubes being respectively fixedly connected to the outer surfaces of a group of two arc cylinders, and the arc cylinders being connected to the interior of the storage cylinder through the connecting tubes.

[0011] As a further solution of the present invention, a piston plate is slidably mounted on the inner wall of the storage cylinder, a connecting rod is fixedly mounted on the lower surface of the piston plate, a plurality of supports are equidistantly fixedly mounted on the outer surface of the bottom end of the connecting rod, a driving column is fixedly mounted on the inner walls of the plurality of supports, a driving block is fixedly mounted on one end of the plurality of hollow rods close to each other, a driving groove is provided on the outer surface of the driving block, the driving column is slidably mounted on the inner wall of the driving groove, and a limiting assembly is provided between the connecting rod and the T-shaped cylinder.

[0012] As a further solution of the present invention, the limit assembly includes: a stop rod, an arc T-shaped groove is provided on the upper surface of the T-shaped cylinder, an arc T-shaped block is slidably installed on the inner wall of the arc T-shaped groove, a stop block is fixedly installed on the upper surface of the arc T-shaped block, a stop hook is fixedly installed on the outer surface of the top of the stop block close to the arc column side, an inclined surface is provided on the upper surface of the stop hook, and the stop hook is arranged below the stop rod, a third spring is fixedly installed on one end of the arc T-shaped block opposite to the stop hook, and the other end of the third spring is fixedly connected to the inner wall of the arc T-shaped groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: When the detection component detects that the viscosity of the top and bottom of the slurry is sufficient, the hydraulic oil will enter the top space of the storage cylinder. As the hydraulic oil continues to enter, the piston plate moves downward, and the piston plate drives the driving column to move downward through the connecting rod. The driving column cooperates with the driving groove to drive multiple hollow rods to move away from each other. The hollow rods drive the plugs to completely block the air outlet to prevent excessive oxygen from entering the slurry. Through this device, the oxygen can be automatically shut off according to the degree of oxidation at the top and bottom of the slurry during the oxidation stage, avoiding excessive oxidation and thus producing excessive sulfuric acid, ensuring the purity of the crystallized gypsum and ensuring the quality of the gypsum. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a limestone-gypsum flue gas desulfurization device proposed in the present invention; Figure 2 This is a schematic diagram of the rod body of a limestone-gypsum flue gas desulfurization device proposed in the present invention; Figure 3 This is a schematic top view of a rod body of a limestone-gypsum flue gas desulfurization device proposed in the present invention; Figure 4 This is a schematic diagram of the internal structure of a rod body of a limestone-gypsum flue gas desulfurization device proposed in the present invention; Figure 5 This is a schematic cross-sectional view of a rod body of a limestone-gypsum flue gas desulfurization device proposed in the present invention; Figure 6 This is a schematic diagram of the ring body of a limestone-gypsum flue gas desulfurization device proposed in the present invention; Figure 7 This is a schematic diagram of a storage cylinder of a limestone-gypsum flue gas desulfurization device proposed in the present invention; Figure 8 This is a schematic cross-sectional view of an outlet pipe of a limestone-gypsum flue gas desulfurization device proposed in the present invention; Figure 9 This is a schematic diagram of a driving block of a limestone-gypsum flue gas desulfurization device proposed in the present invention; Figure 10 for Figure 8 A partial enlarged schematic diagram of point A in the middle.

[0015] Figure: 1, barrel; 2, feed valve; 3, discharge valve; 4, drive motor; 5, rotary joint; 6, rod; 601, through slot; 7, drive gear; 8, driven gear; 9, ring; 901, stirring blade; 902, bump; 10, column; 11, air outlet pipe; 1101, air outlet hole; 12, arc cylinder; 13, arc cylinder; 14, first spring; 1401, second spring; 15, T-shaped cylinder; 150 1. Limiting strip; 1502. Arc T-slot; 1503. Third spring; 1504. Arc T-block; 1505. Stop block; 1506. Stop hook; 16. Storage cylinder; 1601. Connecting tube; 17. Connecting rod; 1701. Stop rod; 18. Piston plate; 19. Hollow rod; 1901. Exhaust hole; 1902. Inlet hole; 20. Plug; 21. Drive block; 22. Drive column; 23. Drive slot. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0017] In the process of oxidizing the limestone slurry that has absorbed sulfur dioxide to produce gypsum, it was found that the slurry would be over-oxidized, resulting in excessive sulfuric acid (H2SO4) generated in the slurry and a sudden drop in pH. Possible reasons include unstable oxygen delivery equipment and uneven oxygen dispersion and mixing. After long-term verification, it was found that when the slurry oxidizes and crystallizes to form gypsum, the slurry will become viscous and its fluidity will deteriorate, so that the oxygen entering the bottom of the slurry cannot be dispersed and moved to the interior of the upper slurry in time to participate in the oxidation reaction. At this time, the operator mistakenly believes that the upper slurry has not been completely oxidized. If oxygen is still continuously introduced, too much oxygen will accumulate at the bottom of the slurry. After a period of time, as the oxygen gradually disperses and mixes into the upper slurry, the upper slurry is also completely oxidized, but there is still too much oxygen remaining in the slurry, causing the slurry to be over-oxidized and produce too much sulfuric acid, resulting in a lower purity of the crystallized gypsum, affecting the quality of the gypsum.

[0018] like Figure 1-Figure 4 As shown, a limestone-gypsum flue gas desulfurization device comprises: The barrel 1 is used to contain the limestone slurry that has absorbed the sulfur dioxide; like Figure 2As shown, the rod body 6 is rotatably mounted on the top wall of the barrel body 1. The interior of the rod body 6 is hollow and is used for the bearing and installation of various components. The top end of the rod body 6 passes through the upper surface of the barrel body 1 and is provided with an opening for passing oxygen. The top end of the barrel body 1 is fixedly mounted with a feed valve 2, and the top end of the barrel body 1 is fixedly mounted with a drive motor 4. The output end of the drive motor 4 passes through the top wall of the barrel body 1 and is fixedly mounted with a drive gear 7. A driven gear 8 is fixedly mounted on the outer surface of the rod body 6 near the drive gear 7. The drive gear 7 is meshed with the driven gear 8. The bottom end of the barrel body 1 is fixedly mounted with a discharge valve 3, through which the produced gypsum slurry is released; During use, the operator delivers the limestone slurry that has absorbed sulfur dioxide into the interior of the barrel 1 through the feed valve 2, and then drives the driving gear 7 to rotate through the driving motor 4, and the driving gear 7 drives the rod 6 to rotate through the driven gear 8.

[0019] like Figure 4 and Figure 6 As shown, the detection component is used to detect the crystallization degree of the upper and lower layers of the slurry, and the detection component is arranged inside the rod body 6; In this embodiment, Figure 4 As shown, the detection assembly includes: two ring bodies 9, which are symmetrically sleeved on the outer surface of the rod body 6 and rotatably mounted thereon. The outer surfaces of the two ring bodies 9 are fixedly mounted with multiple stirring blades 901 for mixing and stirring the slurry during oxidation. The inner walls of the two ring bodies 9 are symmetrically fixed with two protrusions 902, as shown in FIG. Figure 3 As shown, the outer surface of the rod body 6 is provided with two groups of through grooves 601 aligned up and down, and the two protrusions 902 are respectively slidably installed with the inner walls of the two through grooves 601 in one group, as shown in FIG. Figure 6 As shown, an arc column 13 is fixedly mounted on the outer surface of one side of a group of two protrusions 902, and an arc cylinder 12 is fixedly mounted on the inner wall of the two groups of through grooves 601. The other end of the arc column 13 is inserted into the interior of the arc cylinder 12 and slidably mounted on its inner wall. A first spring 14 is sleeved on the outer surface of the upper group of two arc columns 13, and a second spring 1401 is sleeved on the outer surface of the lower group of two arc columns 13. The elastic force of the first spring 14 is smaller than that of the second spring 1401, so that the compression force on the first spring 14 is smaller than that of the second spring 1401. The arc cylinder 12 and the arc column 13 are arranged at the same center of the rod body 6.

[0020] When the rod body 6 rotates, it drives the arc cylinder 12 inside the through groove 601 to rotate. Because the first spring 14 and the second spring 1401 need to reach their respective minimum compression forces before they can be compressed, the arc cylinder 12 drives the protrusion 902 to rotate through the first spring 14 and the second spring 1401, so that the protrusion 902 drives the ring body 9 to rotate with the rod body 6 as the axis, and the ring body 9 drives the stirring blade 901 on the outer surface to rotate. The rotation direction of the stirring blade 901 is the direction of the arc column 13, and the slurry is stirred by the stirring blade 901; During stirring, as the oxidation degree of the slurry gradually increases from low to high, the slurry will also crystallize into gypsum, which increases the viscosity of the slurry. Because the bottom of the slurry contacts oxygen first, the viscosity of the bottom will be greater than that of the top. The stirring blade 901 at the bottom will be subject to greater stirring resistance, and the stirring blade 901 at the top will be subject to smaller resistance. When the upper and lower stirring blades 901 are subject to resistance, they will drive the ring body 9 to rotate relative to the rod body 6. At this time, the ring body 9 drives the two arc columns 13 to move close to the inside of the arc cylinder 12 through the protrusion 902, and squeezes the hydraulic oil inside the arc cylinder 12 through the arc column 13.

[0021] like Figure 2 As shown, the lower surfaces of the multiple outlet pipes 11 are all penetrated with multiple outlet holes 1101. Through this arrangement, if water or slurry enters the interior of the outlet pipe 11 later, the water or slurry can be discharged from the outlet holes 1101 when oxygen is passed through. The multiple outlet pipes 11 are arranged at the bottom of the rod body 6 and are connected to the interior thereof. Oxygen is transported to the bottom of the slurry through the outlet pipes 11 and the outlet holes 1101 on the outer surface. In this embodiment, Figure 4 and Figure 5 As shown, the air supply assembly is used to supply oxygen to the interior of the air outlet pipe 11. The air supply assembly is arranged between the rod body 6 and the air outlet pipe 11. The air supply assembly includes: a rotary joint 5, which is connected to an external oxygen supply pump through the rotary joint 5. Because the rotary joint 5 can rotate, it does not affect the rotation of the rod body 6. The rotary joint 5 is fixedly connected to the inner wall of the opening at the top of the rod body 6. Oxygen enters the interior of the rod body 6 through the rotary joint 5 and the opening at the top of the rod body 6; like Figure 7 and Figure 8 As shown, a circular hole is opened at the bottom end of the rod body 6, and a T-shaped cylinder 15 is slidably installed on the inner wall of the circular hole. The bottom end of the T-shaped cylinder 15 passes through the lower surface of the rod body 6 and is fixedly installed with a column 10. Multiple outlet pipes 11 are fixedly installed on the outer surface of the column 10. The multiple outlet pipes 11 are connected to the interior of the rod body 6 through the column 10 and the T-shaped cylinder 15. The oxygen entering the rod body 6 enters the interior of the column 10 through the T-shaped cylinder 15, and then enters the space adjacent to the end of the outlet pipe 11; like Figure 8 and Figure 9As shown, a hollow rod 19 is inserted into the interior of the multiple outlet pipes 11, and both ends of the hollow rod 19 are set to pass through so that oxygen can circulate inside the outlet pipe 11. A plurality of plugs 20 are fixedly installed at equal intervals on the outer surface of the hollow rod 19. The number of the plugs 20 is set the same as the number of the outlet holes 1101. A plurality of exhaust holes 1901 are opened on the outer surface of the hollow rod 19. The plurality of exhaust holes 1901 are respectively set between two adjacent plugs 20. The number of exhaust holes 1901 is set one less than the number of the plugs 20. An air inlet hole 1902 is opened through the outer surface of the adjacent end of the multiple hollow rods 19.

[0022] The oxygen entering the end of the outlet pipe 11 will enter the interior of the hollow rod 19 through the air inlet hole 1902 on the hollow rod 19, and then be discharged from the exhaust hole 1901 to the space between the two adjacent plugs 20 of the outlet pipe 11. The oxygen enters the slurry from the outlet hole 1101 and mixes with the slurry to oxidize and crystallize into gypsum. Because the outlet hole 1101 is set below the outlet pipe 11, when the oxygen is discharged from the outlet hole 1101, the recoil force will cause the outlet pipe 11 to move upward, so that the exhaust position of the outlet hole 1101 is moved upward. When the impeller 1101 moves upward, the air outlet 1101 will be closer to the stirring blade 901 below. Since the stirring blade 901 will generate violent turbulence in the slurry during stirring operation, if the oxygen outlet 1101 is close to the stirring area, the high-speed rotating impeller will quickly break up the oxygen into tiny bubbles, increasing the gas-liquid contact area and ensuring that the oxidation reaction proceeds evenly in the slurry. When oxygen is not needed, the multiple hollow rods 19 move away from the column 10, driving the plug 20 to completely block the air outlet 1101, and at the same time, preventing the slurry from entering the interior of the air outlet pipe 11. like Figure 7 As shown, a limiting strip 1501 is provided on the circumferential outer surface of the T-shaped cylinder 15, and a limiting groove matching the limiting strip 1501 is provided on the inner wall of the circular hole. The limiting strip 1501 is slidably installed on the inner wall of the limiting groove. Through the setting of the limiting groove and the limiting strip 1501, the T-shaped cylinder 15 will not rotate relative to the rod body 6 but will rotate along with the rod body 6, and will move up and down relative to the rod body 6. The cross-section of the T-shaped cylinder 15 is T-shaped. Through the T-shaped setting, the T-shaped cylinder 15 can be limited when moving up and down and will not slide out of the inside of the rod body 6.

[0023] In this embodiment, Figure 5 and Figure 7 The control component is used to open or close the air supply component. The control component is arranged inside the rod body 6 and is used in conjunction with the detection component.

[0024] like Figure 5 and Figure 9The control component includes: a storage cylinder 16, which is fixedly mounted on the upper surface of the T-shaped cylinder 15, and the port of the storage cylinder 16 is set downward. The top of the storage cylinder 16 is fixedly connected to four connecting tubes 1601, and the other ends of the four connecting tubes 1601 are respectively fixedly connected to the outer surface of a group of two arc cylinders 12. The arc cylinder 12 is connected to the interior of the storage cylinder 16 through the connecting tubes 1601. A piston plate 18 is slidably mounted on the inner wall of the storage cylinder 16, and a connecting rod 17 is fixedly mounted on the lower surface of the piston plate 18. A plurality of supports are equidistantly fixedly mounted on the outer surface of the bottom end of the connecting rod 17, and a driving column 22 is fixedly mounted on the inner walls of the plurality of supports. A driving block 21 is fixedly mounted on one end of the plurality of hollow rods 19 close to each other. A driving groove 23 is provided on the outer surface of the driving block 21, and the driving column 22 is slidably mounted on the inner wall of the driving groove 23.

[0025] The hydraulic oil inside the arc cylinder 12 is squeezed by the arc column 13, so that the hydraulic oil enters the top space of the storage cylinder 16 through the connecting pipe 1601. As the hydraulic oil continues to enter, the piston plate 18 moves downward, and the piston plate 18 drives the driving column 22 to move downward through the connecting rod 17. The driving column 22 cooperates with the driving groove 23 to drive the multiple hollow rods 19 to move away from each other. The hollow rods 19 drive the plug 20 to completely block the air outlet 1101 to prevent excessive oxygen from entering the slurry. This device can automatically shut off oxygen during the oxidation stage of the slurry according to the degree of oxidation at the top and bottom of the slurry, thereby avoiding excessive oxidation and the production of excessive sulfuric acid, ensuring the purity of the crystallized gypsum, and ensuring the quality of the gypsum. When only the hydraulic oil inside a group of two arc cylinders 12 enters the storage cylinder 16, the hollow rod 19 will drive the plug 20 to partially block the air outlet 1101, reducing the discharge of oxygen, thereby avoiding excessive oxygen accumulation at the bottom of the slurry, leading to subsequent excessive oxidation.

[0026] In this embodiment, Figure 6 and Figure 10 A limiting assembly is provided between the connecting rod 17 and the T-shaped cylinder 15. Through the limiting assembly, after the plug 20 completely blocks the air outlet 1101, the limiting assembly can limit the connecting rod 17 from moving up, thereby ensuring that the plug 20 will not loosen at will. The limiting assembly includes: a stopper 1701, an arc T-shaped groove 1502 is provided on the upper surface of the T-shaped cylinder 15, and an arc T-shaped block 1504 is slidably installed on the inner wall of the arc T-shaped groove 1502. The arc T-shaped block 1504 is slidably installed on the inner wall of the arc T-shaped groove 1502. A stop block 1505 is fixedly installed on the upper surface of 504, and a stop hook 1506 is fixedly installed on the outer surface of the top of the stop block 1505 close to the arc column 13. The upper surface of the stop hook 1506 is provided with an inclined surface, and the stop hook 1506 is arranged below the stop rod 1701. A third spring 1503 is fixedly installed on one end of the arc T-block 1504 relative to the stop hook 1506, and the other end of the third spring 1503 is fixedly connected to the inner wall of the arc T-slot 1502.

[0027] When the connecting rod 17 moves downward, it drives the blocking rod 1701 to abut against the inclined surface of the upper surface of the blocking hook 1506, so that the blocking hook 1506 is pushed away. When the blocking rod 1701 continues to move downward and leaves the inclined surface of the blocking hook 1506, the force of the third spring 1503 causes the arc T-shaped block 1504 to move along the arc T-shaped groove 1502 close to the blocking rod 1701, thereby driving the blocking hook 1506 to move above the blocking rod 1701, so that the lower surface of the blocking hook 1506 contacts the upper surface of the blocking rod 1701, and the position of the connecting rod 17 is restricted. When the device is started, the drive motor 4 generates a sufficiently large torque through the cooperation of the drive gear 7 and the driven gear 8, thereby driving the T-shaped cylinder 15 to start rotating instantly. Because the block 1505 has a large gravity, the inertia force of the block 1505 will overcome the elastic force of the third spring 1503, causing the block 1505 itself to move relative to the T-shaped cylinder 15, and the direction of movement is away from the block rod 1701, so the block hook 1506 will disengage from the block rod 1701. At this time, the connecting rod 17 will be released from the restriction, so that the device can enter the operating state again.

[0028] The basic principles, main features and advantages of the present invention are shown and described above. 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 merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A limestone-gypsum flue gas desulfurization device, characterized in that: include: The barrel (1) is used to contain the limestone slurry after absorbing the sulfur dioxide; A rod body (6), the rod body (6) is rotatably mounted on the top wall of the barrel body (1), the interior of the rod body (6) is hollow and is used for supporting and mounting various components, and the top end of the rod body (6) passes through the upper surface of the barrel body (1) and is provided with an opening for introducing oxygen; A plurality of air outlet pipes (11), each of the plurality of air outlet pipes (11) having a plurality of air outlet holes (1101) extending through its lower surface, the plurality of air outlet pipes (11) being arranged at the bottom of the rod body (6) and communicating with the interior thereof, and being used to transport oxygen to the bottom of the slurry through the air outlet pipes (11) and the air outlet holes (1101) on the outer surface; An air delivery component, used for delivering oxygen to the interior of the air outlet pipe (11), wherein the air delivery component is arranged between the rod body (6) and the air outlet pipe (11); A detection component, used for detecting the degree of crystallization of the upper and lower layers of the slurry, wherein the detection component is arranged inside the rod body (6); A control component is used to open or close the air supply component, and the control component is arranged inside the rod body (6) and used in conjunction with the detection component.

2. A limestone-gypsum flue gas desulfurization device according to claim 1, characterized in that: A feed valve (2) is fixedly mounted on the top of the barrel body (1), a drive motor (4) is fixedly mounted on the top of the barrel body (1), an output end of the drive motor (4) passes through the top wall of the barrel body (1) and is fixedly mounted with a drive gear (7), a driven gear (8) is fixedly mounted on the outer surface of the rod body (6) close to the drive gear (7), the drive gear (7) is meshed with the driven gear (8), and a discharge valve (3) is fixedly mounted on the bottom end of the barrel body (1).

3. A limestone-gypsum flue gas desulfurization device according to claim 1, characterized in that: The air supply assembly comprises: A rotary joint (5), wherein the rotary joint (5) is fixedly connected to the inner wall of the opening at the top of the rod body (6), the bottom end of the rod body (6) is provided with a circular hole, and a T-shaped cylinder (15) is slidably installed on the inner wall of the circular hole, the cross section of the T-shaped cylinder (15) is T-shaped, the bottom end of the T-shaped cylinder (15) passes through the lower surface of the rod body (6) and is fixedly installed with a column (10), multiple air outlet pipes (11) are fixedly installed on the outer surface of the column (10), and multiple air outlet pipes (11) are connected to the inside of the rod body (6) through the column (10) and the T-shaped cylinder (15), a limit strip (1501) is provided on the circumferential outer surface of the T-shaped cylinder (15), and a limit groove matching the limit strip (1501) is provided on the inner wall of the circular hole, and the limit strip (1501) is slidably installed on the inner wall of the limit groove.

4. A limestone-gypsum flue gas desulfurization device according to claim 3, characterized in that: A hollow rod (19) is inserted into the interior of the plurality of the air outlet pipes (11), and both ends of the hollow rod (19) are through-set. A plurality of plugs (20) are fixedly installed at equal intervals on the outer surface of the hollow rod (19), and the number of the plugs (20) is the same as the number of the air outlet holes (1101). A plurality of exhaust holes (1901) are opened on the outer surface of the hollow rod (19), and the plurality of exhaust holes (1901) are respectively set between two adjacent plugs (20). The number of the exhaust holes (1901) is set one less than the number of the plugs (20). An air inlet hole (1902) is opened through the outer surface of the adjacent end of the plurality of the hollow rods (19).

5. A limestone-gypsum flue gas desulfurization device according to claim 4, characterized in that: The detection component includes: Two ring bodies (9), the two ring bodies (9) are symmetrically sleeved on the outer surface of the rod body (6) and rotatably mounted thereon, the outer surfaces of the two ring bodies (9) are fixedly mounted with a plurality of stirring blades (901) for mixing and stirring the slurry during oxidation, the inner walls of the two ring bodies (9) are symmetrically fixedly mounted with two protrusions (902), the outer surface of the rod body (6) is provided with two groups of through grooves (601) aligned up and down, the two protrusions (902) are respectively slidably mounted on the inner wall of a group of two through grooves (601), and the outer surface of one side of the two protrusions (902) is fixedly mounted. An arc column (13) is fixedly installed, and an arc cylinder (12) is fixedly installed on the inner walls of the two groups of through grooves (601). The other end of the arc column (13) is inserted into the interior of the arc cylinder (12) and slidably installed on the inner wall of the arc cylinder. The outer surfaces of the two arc columns (13) in the upper group are sleeved with a first spring (14), and the outer surfaces of the two arc columns (13) in the lower group are sleeved with a second spring (1401). The elastic force of the first spring (14) is smaller than that of the second spring (1401). The arc cylinder (12) and the arc column (13) are arranged at the same center as the rod body (6).

6. A limestone-gypsum flue gas desulfurization device according to any one of claims 2 to 5, characterized in that: The control component includes: A storage cylinder (16) is fixedly mounted on the upper surface of the T-shaped cylinder (15), with the port of the storage cylinder (16) facing downward. Four connecting tubes (1601) are fixedly connected to the top of the storage cylinder (16), and the other ends of the four connecting tubes (1601) are respectively fixedly connected to the outer surfaces of a group of two arc cylinders (12). The arc cylinders (12) are connected to the interior of the storage cylinder (16) through the connecting tubes (1601).

7. A limestone-gypsum flue gas desulfurization device according to claim 6, characterized in that: A piston plate (18) is slidably mounted on the inner wall of the storage cylinder (16), a connecting rod (17) is fixedly mounted on the lower surface of the piston plate (18), a plurality of supports are equidistantly fixedly mounted on the outer surface of the bottom end of the connecting rod (17), a driving column (22) is fixedly mounted on the inner walls of the plurality of supports, a driving block (21) is fixedly mounted on one end of the plurality of hollow rods (19) close to each other, a driving groove (23) is provided on the outer surface of the driving block (21), the driving column (22) is slidably mounted on the inner wall of the driving groove (23), and a limiting assembly is provided between the connecting rod (17) and the T-shaped cylinder (15).

8. The limestone-gypsum flue gas desulfurization device according to claim 7, characterized in that: The limiting component includes: A stop rod (1701) is provided with an arc T-shaped groove (1502) on the upper surface of the T-shaped cylinder (15), an arc T-shaped block (1504) is slidably mounted on the inner wall of the arc T-shaped groove (1502), a stop block (1505) is fixedly mounted on the upper surface of the arc T-shaped block (1504), a stop hook (1506) is fixedly mounted on the outer surface of the top of the stop block (1505) close to the arc column (13), an inclined surface is provided on the upper surface of the stop hook (1506), and the stop hook (1506) is arranged below the stop rod (1701), a third spring (1503) is fixedly mounted on one end of the arc T-shaped block (1504) relative to the stop hook (1506), and the other end of the third spring (1503) is fixedly connected to the inner wall of the arc T-shaped groove (1502).

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