A flue gas desulfurization tower

Abstract

The invention discloses a flue gas desulfurization tower, which relates to the field of waste gas treatment material separation and solves the problem that the existing flue gas desulfurization tower is difficult to discharge sulfuric acid with a concentration greater than a set value while keeping the internal sulfuric acid amount relatively constant when adsorbing sulfur dioxide in the flue gas through dilute sulfuric acid. The flue gas desulfurization tower comprises a base, a tank body, a desulfurization mechanism and a conveying mechanism. The desulfurization mechanism comprises a pumping pipe and a nozzle. The conveying mechanism comprises a switching column. A switching cavity is provided in the switching column. The flue gas desulfurization tower is convenient for pumping the dilute sulfuric acid at the bottom of the tank body to the nozzle position through the pumping pipe for spraying, so as to adsorb sulfur dioxide in the flue gas. When the concentration of the dilute sulfuric acid is greater than the set value, the switching column is controlled to rotate, so that the switching cavity filled with clean water is rotated to a position connected with the pumping pipe, and the switching cavity filled with sulfuric acid is rotated to a position connected with a drain pipe, so as to realize the function of quantitatively discharging sulfuric acid and inputting a set amount of clean water to dilute the internal dilute sulfuric acid.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment material separation, in particular to a flue gas desulfurization tower. Background Art

[0002] Harmful gases such as sulfur dioxide and nitrogen oxides in the flue gas generated by burning coal, oil and gas are discharged into the atmosphere, causing acid rain, damaging the ecological environment and affecting people's health. In response to the more stringent control standards for the allowable emission concentrations of sulfur dioxide and nitrogen oxides in flue gas proposed by relevant environmental protection laws and regulations in my country, various flue gas desulfurization technologies, methods and devices have emerged.

[0003] The invention patent with publication number CN107281923A discloses a sulfuric acid tail gas desulfurization tower, which sprays sulfur dioxide-containing flue gas with dilute sulfuric acid, dissolves sulfur dioxide in the flue gas to produce sulfurous acid, and sulfurous acid is oxidized to produce sulfuric acid, gradually increasing the concentration of dilute sulfuric acid. When the concentration increases to the set value, the absorption efficiency of sulfur dioxide decreases, and the internal dilute sulfuric acid needs to be replaced. At this time, the device needs to stop running for a period of time to replace the internal dilute sulfuric acid. During the replacement process, the flue gas desulfurization treatment cannot be carried out synchronously, which affects the treatment efficiency of the flue gas. To this end, we propose a flue gas desulfurization tower. Summary of the invention

[0004] The function of the present invention is to provide a flue gas desulfurization tower which is convenient for improving the desulfurization efficiency and at the same time quantitatively replacing and outputting sulfuric acid having a concentration greater than a set value, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flue gas desulfurization tower, comprising a base, a desulfurization mechanism and a conveying mechanism, wherein a tank body is fixedly connected to the base, and an air inlet pipe is connected to the upper end of the tank body, and the desulfurization mechanism comprises a collecting bucket fixedly installed in the tank body, and a plurality of pumping pipes are fixedly connected to the collecting bucket, and a plurality of nozzles are arranged in the tank body, which are used to pump the dilute sulfuric acid at the bottom of the tank body to the nozzle position through the pumping pipe for spraying, so as to adsorb the sulfur dioxide in the flue gas, and then collect the fallen dilute sulfuric acid to the bottom of the tank body through the collecting bucket for recycling, and the conveying mechanism comprises a fixed frame fixedly installed in the tank body, and a plurality of bottom plates are fixedly connected to the fixed frame, and a switching column is rotatably connected to the bottom plate, and a plurality of groups of nozzles are evenly arranged in the switching column. A switching chamber capable of being connected to the top of the pumping pipe, a water inlet pipe and a drain pipe are fixedly connected to the tank body, a liquid concentration detector for detecting the liquid concentration in the pumping pipe is provided in the tank body, and the concentration of dilute sulfuric acid is detected by the liquid concentration detector. Clean water is input into the switching chamber on one side through the water inlet pipe, and when the concentration is greater than the set value, the switching column is controlled to rotate a set angle, so that the switching chamber filled with clean water is rotated to a position connected to the pumping pipe, and the switching chamber filled with sulfuric acid is rotated to a position connected to the drain pipe for discharge, thereby realizing the function of quantitatively discharging sulfuric acid and inputting a set amount of clean water to dilute the dilute sulfuric acid inside at the same time, so as to improve the desulfurization efficiency while quantitatively replacing and outputting sulfuric acid with a concentration greater than the set value.

[0006] Preferably, the conveying mechanism also includes a fixed platform fixedly mounted on the fixed frame, a plurality of groups of top plates fixedly connected to the fixed platform and rotatably connected to the top surface of the switching column respectively, an output pipe fixedly connected to the top plate which can be connected to the pumping pipe through the switching chamber, a conveying pump fixedly connected to the output pipe, the liquid concentration detector is fixedly mounted in the output pipe, the top end of the pumping pipe passes through the bottom plate and is connected to a group of bottoms of the switching chambers, and a conveying member for conveying clean water is provided on the fixed frame, so as to realize the function of quantitatively discharging sulfuric acid and simultaneously inputting a set amount of clean water to dilute the internal dilute sulfuric acid.

[0007] Preferably, the conveying member includes a rotating tube rotatably connected to the bottom of the tank body, the rotating tube passes through the bottom of the tank body, the bottom end of the rotating tube is connected to the water inlet pipe, the bottom end of the rotating tube is rotatably connected to one end of the water inlet pipe, a connecting cavity that can be connected to the bottom of the switching cavity on one side is opened in the fixed frame, a side hole that can be connected to the connecting cavity is opened on the top side of the rotating tube, the rotating tube is rotatably connected to the fixed frame, a switching member for rotating and driving the switching column to switch is provided on the rotating tube, and an output member for outputting sulfuric acid through the drain pipe is provided on the fixed frame, so as to facilitate the transportation of clean water.

[0008] Preferably, the switching member includes a rotating shaft fixedly mounted on the top end of the rotating tube, the rotating shaft passes through the fixed platform and is rotatably connected to the fixed platform, a rotating disk is fixedly connected to the rotating shaft, a plurality of groups of ratchets are rotatably connected to the outer wall of the rotating disk, a first outer gear ring is rotatably connected inside the fixed platform, the outer wall of the switching column is evenly provided with tooth grooves that can mesh with the first outer gear ring, and a plurality of groups of bevel gear blocks are fixedly connected to the inner wall of the first outer gear ring, so as to rotate and drive the switching column to switch.

[0009] Preferably, the output member includes a storage box fixedly mounted on the bottom of the fixed frame, and a connecting pipe that can be connected to a group of bottoms of the switching chambers is fixedly connected to the bottom plate, one end of the connecting pipe is connected to the storage box, and one end of the drain pipe is connected to the bottom of the storage box to facilitate the output of sulfuric acid through the drain pipe.

[0010] Preferably, the conveying mechanism also includes a fixed block fixedly mounted on the top plate, the bottom plate of the fixed block is slidably connected with a lifting block in the vertical direction, the fixed block is provided with a first pipe and a second pipe, the lifting block is provided with a third pipe for connecting the first pipe and the second pipe, and a one-way air inlet hole is provided on the top plate to facilitate maintaining the air pressure balance in the switching chamber during liquid conveying.

[0011] Preferably, the desulfurization mechanism also includes a first annular tube fixedly installed in the tank body, the top end of the output pipe is connected to the first annular tube, the outer wall of the rotating shaft is fixedly connected to a second annular tube rotatably connected to the first annular tube, the nozzle is fixedly installed on the second annular tube, the top end of the rotating shaft is fixedly connected to a fan blade, and the bottom side of the tank body is connected to an exhaust pipe to facilitate uniform spraying of dilute sulfuric acid and adsorption contact with the flue gas.

[0012] Preferably, the bottom end of the collecting bucket is fixedly connected to a collecting pipe, the bottom of the collecting pipe is fixedly connected to a fixing ring, the inner wall of the collecting pipe is slidably connected to a lifting ring in a vertical direction, a plurality of through holes are provided on the fixing ring and the lifting ring, the outer wall of the rotating tube is provided with a reciprocating threaded groove threadedly connected to the inner wall of the lifting ring, a tension spring is fixedly connected in the through hole, the bottom of the tension spring is fixedly connected to a sealing block slidably connected to the inner wall of the through hole in a vertical direction, the upper and lower ends of the lifting ring are fixedly connected to a bellows fixedly connected to the collecting pipe, so as to facilitate the pressurized transportation of the gas and liquid at the bottom of the collecting bucket to the dilute sulfuric acid at the bottom of the tank body during the rotation of the rotating tube.

[0013] Preferably, the switching member also includes a driving motor fixedly mounted on the base, the output end of the driving motor is coaxially fixedly connected with a driving gear, and the outer wall of the bottom end of the rotating tube is fixedly connected with a second outer gear ring meshing with the driving gear, so as to drive the rotating tube to rotate.

[0014] Preferably, a spring block is provided in the fixing platform, and a plurality of triangular slots capable of engaging with the spring block are evenly provided on the outer wall of the switching column, so as to facilitate preliminary limiting and fixing of the angle of the switching column.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. A flue gas desulfurization tower provided by the present invention solves the problem that when the existing flue gas desulfurization tower is used, it is difficult to discharge sulfuric acid with a concentration greater than a set value while keeping the internal sulfuric acid amount relatively constant when adsorbing sulfur dioxide in the flue gas through dilute sulfuric acid. The flue gas to be desulfurized is input through an air inlet pipe, and a driving motor is started to drive the rotating tube to rotate. Clean water or dilute sulfuric acid with a concentration lower than a required value is continuously input to the bottom end of the rotating tube through a water inlet pipe. The switching chamber and the pumping pipe are sucked by a delivery pump, and the dilute sulfuric acid at the bottom is pumped into the connected switching chamber through the pumping pipe, and then input upward into the output pipe. The concentration of the dilute sulfuric acid is monitored by a liquid concentration detector, and the dilute sulfuric acid is transported upward into the first annular tube, and then output into the nozzle through the second annular tube. At this time, the rotating tube drives the rotating shaft to rotate the second annular tube and the fan blades, and the fan blades push the flue gas in the air inlet pipe downward, and the second annular tube drives the nozzle to rotate and spray, thereby improving the efficiency of contact and adsorption of the dilute sulfuric acid and the flue gas.

[0017] 2. The present invention provides a flue gas desulfurization tower, in which the flue gas enters the collecting bucket downward along with the falling water mist, and at this time the rotating tube drives the lifting ring to lift and lower reciprocate in the collecting tube through the reciprocating threaded groove, and when the lifting ring moves upward, the space between the lifting ring and the fixed ring increases, generating negative pressure, and the sealing block at the bottom blocks the through hole on the fixed ring, while the gas and liquid in the collecting bucket push the sealing block downward through the through hole on the lifting ring and enter the collecting tube, and when the lifting ring moves downward, the gas and liquid in the collecting tube can be squeezed through the through hole on the fixed ring to push the sealing block downward, enter the bottom of the tank body and mix with the dilute sulfuric acid, at this time the flue gas is squeezed into the dilute sulfuric acid, which improves the adsorption efficiency of sulfur dioxide in the flue gas, and the floating flue gas can be discharged through the exhaust pipe, and the dilute sulfuric acid at the bottom of the tank body is circulated and transported again through the pumping pipe for spraying operation.

[0018] 3. A flue gas desulfurization tower provided by the present invention, when it is detected that the concentration of dilute sulfuric acid is greater than a set value, the driving motor controls the rotating tube to rotate in the opposite direction at a set angle, and the rotating disk drives the ratchet so that the bevel tooth block drives the first outer tooth ring to rotate, and the first outer tooth ring drives the tooth groove to rotate the switching column at a set angle. During the switching process, the switching chamber originally filled with dilute sulfuric acid with a higher concentration is rotated to a position connected to the connecting pipe, so that the liquid in the rotating tube can be input into the output pipe to reduce the concentration of the dilute sulfuric acid, and at the same time, the high-concentration sulfuric acid is output through the connecting pipe, and the liquid output from the connecting pipe The liquid is collected through the storage box and output to the drain pipe, and the switching chamber originally connected with the connecting pipe is rotated to be connected with the connecting chamber, and the empty switching chamber is filled with the liquid to be added again. When the liquid level rises, the internal air will be discharged through the first pipe, the third pipe and the second pipe until the liquid level collides with the bottom surface of the lifting block, floating the lifting block, and the opening of the third pipe moves up to release the connection with the first pipe, indicating that the switching chamber is full of liquid. At the same time, the internal gas is also discharged, which is convenient for subsequent switching operations and maintains the stability of the internal air pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 for Figure 2 A magnified image of the middle A area;

[0022] Figure 4 for Figure 2 Enlarged view of area B;

[0023] Figure 5 It is an exploded view of the local structure of the desulfurization mechanism of the present invention;

[0024] Figure 6 for Figure 5 Enlarged view of area C in the middle;

[0025] Figure 7 It is a schematic diagram of the partial structure of the desulfurization mechanism of the present invention;

[0026] Figure 8 for Figure 7 Enlarged view of area D in the middle;

[0027] Fig. 9 It is a partial structural cross-sectional view of the conveying mechanism of the present invention;

[0028] Fig.10 for Fig. 9 Enlarged view of the middle E area;

[0029] Fig.11 It is a schematic diagram of the local structure of the conveying mechanism of the present invention;

[0030] Fig.12 for Fig.11 Enlarged view of the middle F area;

[0031] Fig.13 It is an exploded view of the local structure of the conveying mechanism of the present invention;

[0032] Fig.14 for Fig.13 Enlarged view of the middle G area.

[0033] In the figure: 1-base; 2-tank body; 3-intake pipe; 4-desulfurization mechanism; 5-collection bucket; 6-pumping pipe; 7-nozzle; 8-conveying mechanism; 9-fixed frame; 10-bottom plate; 11-switching column; 12-switching chamber; 13-water inlet pipe; 14-drain pipe; 15-liquid concentration detector; 16-fixed platform; 17-top plate; 18-output pipe; 19-conveying pump; 20-conveying member; 21-rotating pipe; 22-connecting chamber; 23-side hole; 24-switching member; 25-output member; 26-rotating shaft; 27-rotating disk; 28-ratchet; 29-first outer gear ring; 30 -tooth groove; 31-bevel gear block; 32-storage box; 33-connecting pipe; 34-fixing block; 35-lifting block; 36-first pipeline; 37-second pipeline; 38-third pipeline; 39-one-way air inlet; 40-first annular tube; 41-second annular tube; 42-fan blades; 43-exhaust pipe; 44-collecting pipe; 45-fixing ring; 46-lifting ring; 47-through hole; 48-reciprocating thread groove; 49-tension spring; 50-sealing block; 51-bellows; 52-driving motor; 53-driving gear; 54-second outer gear ring; 55-spring block; 56-triangular slot. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 14 The present invention provides a technical solution: a flue gas desulfurization tower, including a base 1, a desulfurization mechanism 4 and a conveying mechanism 8, the base 1 is fixedly connected with a tank body 2, the upper end of the tank body 2 is connected with an air inlet pipe 3, the desulfurization mechanism 4 includes a collecting bucket 5 fixedly installed in the tank body 2, and a plurality of pumping pipes 6 are fixedly connected to the collecting bucket 5. A plurality of nozzles 7 are arranged in the tank body 2, which are used to pump the dilute sulfuric acid at the bottom of the tank body 2 to the nozzle 7 through the pumping pipe 6 for spraying, adsorbing sulfur dioxide in the flue gas, and then collecting the falling dilute sulfuric acid to the bottom of the tank body 2 through the collecting bucket 5 for recycling, and the conveying mechanism 8 includes a fixing frame 9 fixedly installed in the tank body 2, a plurality of bottom plates 10 are fixedly connected to the fixing frame 9, and a switching column 11 is rotatably connected to the bottom plate 10, and the switching column 11 is rotatably connected to the bottom plate 10. A plurality of switching chambers 12 that can be connected to the top of the pumping pipe 6 are evenly arranged in the column 11. A water inlet pipe 13 and a drain pipe 14 are fixedly connected to the tank body 2. A liquid concentration detector 15 for detecting the liquid concentration in the pumping pipe 6 is provided in the tank body 2. The concentration of dilute sulfuric acid is detected by the liquid concentration detector 15. Clean water is input into the switching chamber 12 on one side through the water inlet pipe 13. When the concentration is greater than the set value, the switching column 11 is controlled to rotate a set angle, so that the switching chamber 12 filled with clean water is rotated to a position connected to the pumping pipe 6, and the switching chamber 12 filled with sulfuric acid is rotated to a position connected to the drain pipe 14 for discharge, thereby realizing the function of quantitatively discharging sulfuric acid and inputting a set amount of clean water to dilute the dilute sulfuric acid inside.

[0036] The conveying mechanism 8 also includes a fixed platform 16 fixedly mounted on the fixed frame 9, and a plurality of top plates 17 are fixedly connected to the fixed platform 16 and are rotatably connected to the top surfaces of the switching columns 11 respectively. An output pipe 18 that can be connected to the pumping pipe 6 through the switching chamber 12 is fixedly connected to the top plate 17, and a conveying pump 19 is fixedly connected to the output pipe 18. The liquid concentration detector 15 is fixedly mounted in the output pipe 18. The top end of the pumping pipe 6 passes through the bottom plate 10 and is connected to the bottom of a group of switching chambers 12. A conveying member 20 for conveying clean water is provided on the fixed frame 9.

[0037] The conveying member 20 includes a rotating tube 21 rotatably connected to the bottom of the tank body 2, the rotating tube 21 passes through the bottom of the tank body 2, the bottom end of the rotating tube 21 is connected to the water inlet pipe 13, the bottom end of the rotating tube 21 is rotatably connected to one end of the water inlet pipe 13, a connecting cavity 22 that can be connected to the bottom of the switching cavity 12 on one side is opened in the fixed frame 9, a side hole 23 that can be connected to the connecting cavity 22 is opened on the top side of the rotating tube 21, the rotating tube 21 is rotatably connected to the fixed frame 9, a switching member 24 for rotating and driving the switching column 11 to switch is provided on the rotating tube 21, and an output member 25 for outputting sulfuric acid through the drain pipe 14 is provided on the fixed frame 9.

[0038] The switching member 24 includes a rotating shaft 26 fixedly mounted on the top of the rotating tube 21, the rotating shaft 26 passes through the fixed platform 16 and is rotatably connected to the fixed platform 16, a rotating disk 27 is fixedly connected to the rotating shaft 26, and a plurality of groups of ratchet teeth 28 are rotatably connected to the outer wall of the rotating disk 27, a first outer gear ring 29 is rotatably connected in the fixed platform 16, the outer wall of the switching column 11 is evenly provided with tooth grooves 30 that can mesh with the first outer gear ring 29, and a plurality of groups of helical gear blocks 31 are fixedly connected to the inner wall of the first outer gear ring 29, the switching member 24 also includes a driving motor 52 fixedly mounted on the base 1, the driving motor 52 model is preferably Y80M1-2, the output end of the driving motor 52 is coaxially fixedly connected with a driving gear 53, the outer wall of the bottom end of the rotating tube 21 is fixedly connected with a second outer gear ring 54 that meshes with the driving gear 53, a spring block 55 is provided in the fixed platform 16, and the outer wall of the switching column 11 is evenly provided with a plurality of groups of triangular grooves 56 that can be engaged with the spring block 55.

[0039] The output member 25 includes a storage box 32 fixedly mounted on the bottom of the fixed frame 9, and a connecting pipe 33 that can be connected to the bottom of a group of switching chambers 12 is fixedly connected to the bottom plate 10, one end of the connecting pipe 33 is connected to the storage box 32, and one end of the drain pipe 14 is connected to the bottom of the storage box 32.

[0040] The conveying mechanism 8 also includes a fixed block 34 fixedly mounted on the top plate 17, the bottom plate 10 of the fixed block 34 is slidably connected with a lifting block 35 in the vertical direction, a first pipe 36 and a second pipe 37 are provided on the fixed block 34, a third pipe 38 for connecting the first pipe 36 and the second pipe 37 is provided on the lifting block 35, and a one-way air inlet hole 39 is provided on the top plate 17.

[0041] The desulfurization mechanism 4 also includes a first annular tube 40 fixedly installed in the tank body 2, the top end of the output pipe 18 is connected to the first annular tube 40, the outer wall of the rotating shaft 26 is fixedly connected to a second annular tube 41 rotatably connected to the first annular tube 40, the nozzle 7 is fixedly installed on the second annular tube 41, the top end of the rotating shaft 26 is fixedly connected to a fan blade 42, and the bottom side of the tank body 2 is connected to an exhaust pipe 43.

[0042] The bottom end of the collecting bucket 5 is fixedly connected to a collecting pipe 44, the bottom of the collecting pipe 44 is fixedly connected to a fixing ring 45, the inner wall of the collecting pipe 44 is slidably connected to a lifting ring 46 in the vertical direction, and multiple groups of through holes 47 are provided on the fixing ring 45 and the lifting ring 46. The outer wall of the rotating tube 21 is provided with a reciprocating thread groove 48 threadedly connected to the inner wall of the lifting ring 46, a tension spring 49 is fixedly connected in the through hole 47, and the bottom of the tension spring 49 is fixedly connected to a sealing block 50 slidably connected to the inner wall of the through hole 47 in the vertical direction, and the upper and lower ends of the lifting ring 46 are fixedly connected to a bellows 51 fixedly connected to the collecting pipe 44.

[0043] Reference reaction equation:

[0044] In this embodiment, a certain amount of dilute sulfuric acid is injected into the bottom of the tank body 2 so that the liquid level of the dilute sulfuric acid is above the bottom end of the pumping pipe 6, the flue gas to be desulfurized is input through the air inlet pipe 3, the driving motor 52 is started to drive the driving gear 53 to rotate, so that the second outer gear ring 54 drives the rotating tube 21 to rotate, and clean water or dilute sulfuric acid with a concentration lower than the required value is continuously input to the bottom end of the rotating tube 21 through the water inlet pipe 13, and the switching chamber 12 and the pumping pipe 6 are sucked by the delivery pump 19, and the dilute sulfuric acid at the bottom is pumped into the connected switching chamber 12 through the pumping pipe 6. The liquid is transported upward into the first annular tube 40 and then output to the nozzle 7 through the second annular tube 41. At this time, the rotating tube 21 drives the rotating shaft 26 to rotate the second annular tube 41 and the fan blades 42. The fan blades 42 push the flue gas in the air inlet pipe 3 downward, and the second annular tube 41 drives the nozzle 7 to rotate and spray, thereby improving the efficiency of the contact and adsorption of the dilute sulfuric acid with the flue gas.

[0045] During this process, the rotating shaft 26 drives the rotating disk 27 to rotate toward the arc surface of the ratchet 28 (see the attached diagram). Fig.11The ratchet 28 does not drive the bevel gear block 31 and the first outer gear ring 29 to rotate. The switching column 11 maintains a relatively stable state to transport the liquid under the limit of the spring block 55 on the triangular groove 56. The smoke enters the collecting bucket 5 downward along with the falling water mist. At this time, the rotating tube 21 drives the lifting ring 46 to reciprocate in the collecting tube 44 through the reciprocating thread groove 48. When the lifting ring 46 moves up, the space between the lifting ring 46 and the fixed ring 45 increases, generating negative pressure. (Since the lifting ring 46 and the fixed ring 45 are respectively provided with through holes 47, it has been explained in the following description whether it is the through hole 47 on the lifting ring 46 or the fixed ring 45. The through hole 47 on the fixed ring 45 is blocked by the sealing block 50 at the bottom, and the gas and liquid in the collecting hopper 5 will push the sealing block 50 downward through the through hole 47 on the lifting ring 46 and enter the collecting pipe 44. When the lifting ring 46 moves downward, the gas and liquid in the collecting pipe 44 can be squeezed through the through hole 47 on the fixing ring 45 to push the sealing block 50 downward, enter the bottom of the tank body 2 and mix with the dilute sulfuric acid. At this time, the flue gas is squeezed into the dilute sulfuric acid, which improves the adsorption efficiency of sulfur dioxide in the flue gas. The floating flue gas can be discharged through the exhaust pipe 43, and the dilute sulfuric acid at the bottom of the tank body 2 is circulated and transported again through the pumping pipe 6 for spraying operation.

[0046] When it is detected that the concentration of dilute sulfuric acid is greater than the set value, the driving motor 52 controls the rotating tube 21 to rotate in the reverse direction at a set angle (such as the attached Fig.11 The first outer tooth ring 29 is rotated clockwise in the middle), thereby driving the ratchet 28 through the rotating disk 27 so that the bevel tooth block 31 drives the first outer tooth ring 29 to rotate, and the first outer tooth ring 29 drives the tooth groove 30 to rotate the switching column 11 to a set angle, and the spring block 55 slides out of a group of triangular slots 56 and is clamped into the next group of triangular slots 56 to limit the position, indicating that the switching is completed at the set angle, and the position switching of the adjacent switching chambers 12 is completed. At this time, the controller in the tank body 2 controls the drive motor 52 to stop rotating and drives the rotating tube 21 to rotate counterclockwise again to repeat the spraying operation described in the previous paragraph of the specification.

[0047] Since the liquid in the rotating tube 21 is continuously input into the switching chamber 12 on one side through the connecting chamber 22, during the switching process, the liquid in the switching chamber 12 rotates to a position connected to the upper end of the pumping tube 6, and at the same time, the switching chamber 12 originally filled with dilute sulfuric acid with a higher concentration is rotated to a position connected to the connecting pipe 33, so that the liquid in the rotating tube 21 can be input into the output pipe 18 to reduce the concentration of the dilute sulfuric acid, and at the same time, the high-concentration sulfuric acid is output through the connecting pipe 33. The one-way air inlet 39 at the upper end is used to maintain the air pressure balance in the switching chamber 12. The liquid output from the connecting pipe 33 is collected by the storage box 32 and output to the drain pipe 14. During this switching process, as shown in the attached Fig. 9 -Attached Fig.13As shown, the switching chamber 12 is provided with four groups. The switching chamber 12 near the spring block 55 is connected to the upper end of the connecting chamber 22. The upper and lower ends of the switching chamber 12 near the delivery pump 19 are respectively connected to the output pipe 18 and the pumping pipe 6. The bottom end of the switching chamber 12 at the connecting position below the one-way air inlet 39 is connected to the top of the connecting pipe 33. Each time the switching column 11 is switched, it rotates 90° counterclockwise to rotate the switching chamber 12 originally connected to the connecting pipe 33 to connect to the connecting chamber 22, and the empty switching chamber 12 is filled with the liquid to be added again. When the liquid level rises, the internal air will be discharged through the first pipe 36, the third pipe 38 and the second pipe 37 until the liquid level contacts the bottom surface of the lifting block 35, the lifting block 35 floats, the opening of the third pipe 38 moves up, and the connection with the first pipe 36 is released, indicating that the liquid in the switching chamber 12 is full, and the internal gas is also discharged, which is convenient for subsequent switching operations and maintains the stability of the internal air pressure.

[0048] It is worth noting that: by providing the bellows 51, the sealing between the reciprocating thread groove 48 and the lifting ring 46 is ensured, and the high-concentration sulfuric acid that is directly discharged and replaced can be collected and utilized later.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas desulfurization tower, characterized in that: include: A base (1), a tank body (2) being fixedly connected to the base (1), and an upper end of the tank body (2) being in communication with an air intake pipe (3); Also includes: A desulfurization mechanism (4), the desulfurization mechanism (4) comprising a collecting hopper (5) fixedly mounted in the tank body (2), the collecting hopper (5) being fixedly connected to a plurality of pumping pipes (6), the tank body (2) being provided with a plurality of nozzles (7) for pumping dilute sulfuric acid at the bottom of the tank body (2) to the nozzles (7) through the pumping pipes (6) for spraying out, thereby adsorbing sulfur dioxide in the flue gas, and then collecting the falling dilute sulfuric acid to the bottom of the tank body (2) through the collecting hopper (5) for recycling; The conveying mechanism (8) comprises a fixing frame (9) fixedly mounted in the tank body (2), a plurality of bottom plates (10) being fixedly connected to the fixing frame (9), a switching column (11) being rotatably connected to the bottom plate (10), a plurality of switching chambers (12) being evenly arranged in the switching column (11) and being able to communicate with the top end of the pumping pipe (6), a water inlet pipe (13) and a drain pipe (14) being fixedly connected to the tank body (2), a liquid concentration detector (15) for detecting the concentration of the liquid in the pumping pipe (6) being provided in the tank body (2), the concentration of the dilute sulfuric acid being detected by the liquid concentration detector (15), and clean water being input into the water inlet pipe (13) at one side. When the concentration in the switching chamber (12) is greater than a set value, the switching column (11) is controlled to rotate at a set angle, so that the switching chamber (12) filled with clean water rotates to a position connected to the pumping pipe (6), and the switching chamber (12) filled with sulfuric acid rotates to a position connected to the drain pipe (14) for discharge, thereby realizing the function of quantitatively discharging sulfuric acid and simultaneously inputting a set amount of clean water to dilute the dilute sulfuric acid inside. The conveying mechanism (8) also includes a fixed platform (16) fixedly mounted on the fixed frame (9), and the fixed platform (16) is fixedly connected to a plurality of top plates (17) respectively rotatably connected to the top surface of the switching column (11), and the top plate (17) is fixedly connected to a plurality of top plates (17) capable of passing through the switching chamber. (12) an output pipe (18) connected to the pumping pipe (6), the output pipe (18) being fixedly connected to a delivery pump (19), the liquid concentration detector (15) being fixedly installed in the output pipe (18), the top end of the pumping pipe (6) passing through the bottom plate (10) and being connected to the bottom of a group of the switching chambers (12), the fixed frame (9) being provided with a delivery member (20) for delivering clean water, the delivery member (20) comprising a rotating pipe (21) rotatably connected to the bottom of the tank body (2), the rotating pipe (21) passing through the bottom of the tank body (2), the bottom end of the rotating pipe (21) being connected to the water inlet pipe (13), the bottom end of the rotating pipe (21) being connected to the water inlet pipe (13) ), the fixing frame (9) is provided with a connecting cavity (22) which can be connected to the bottom of the switching cavity (12) on one side, the top side of the rotating tube (21) is provided with a side hole (23) which can be connected to the connecting cavity (22), the rotating tube (21) is rotatably connected to the fixing frame (9), the rotating tube (21) is provided with a switching member (24) for rotating to drive the switching column (11) to switch, the fixing frame (9) is provided with an output member (25) for outputting sulfuric acid through the drain pipe (14), the switching member (24) comprises a rotating shaft (26) fixedly mounted on the top of the rotating tube (21), the rotating shaft (26) passes through the fixing platform (16),The switch column (11) is rotatably connected to the fixed platform (16); a rotating disk (27) is fixedly connected to the rotating shaft (26); a plurality of groups of ratchet teeth (28) are rotatably connected to the outer wall of the rotating disk (27); a first outer gear ring (29) is rotatably connected to the inner wall of the fixed platform (16); tooth grooves (30) that can mesh with the first outer gear ring (29) are evenly formed on the outer wall of the switching column (11); a plurality of groups of helical gear blocks (31) are fixedly connected to the inner wall of the first outer gear ring (29); and the output member (25) includes a plurality of helical gear blocks (31) fixedly installed on the fixed platform (16). A storage box (32) is provided at the bottom of the fixed frame (9); a connecting pipe (33) capable of communicating with the bottom of a group of the switching chambers (12) is fixedly connected to the bottom plate (10); one end of the connecting pipe (33) is connected to the storage box (32); one end of the drain pipe (14) is connected to the bottom of the storage box (32); a spring block (55) is provided in the fixed platform (16); and a plurality of triangular slots (56) capable of being engaged with the spring block (55) are evenly provided on the outer wall of the switching column (11).

2. A flue gas desulfurization tower according to claim 1, characterized in that: The conveying mechanism (8) further comprises a fixed block (34) fixedly mounted on the top plate (17); the bottom plate (10) of the fixed block (34) is slidably connected to a lifting block (35) in a vertical direction; the fixed block (34) is provided with a first pipe (36) and a second pipe (37); the lifting block (35) is provided with a third pipe (38) for connecting the first pipe (36) and the second pipe (37); and the top plate (17) is provided with a one-way air inlet hole (39).

3. A flue gas desulfurization tower according to claim 1, characterized in that: The desulfurization mechanism (4) further comprises a first annular tube (40) fixedly mounted in the tank body (2); the top end of the output pipe (18) is in communication with the first annular tube (40); the outer wall of the rotating shaft (26) is fixedly connected with a second annular tube (41) rotatably connected to the first annular tube (40); the nozzle (7) is fixedly mounted on the second annular tube (41); the top end of the rotating shaft (26) is fixedly connected with a fan blade (42); and the bottom side of the tank body (2) is in communication with an exhaust pipe (43).

4. A flue gas desulfurization tower according to claim 1, characterized in that: The bottom end of the collecting bucket (5) is fixedly connected to a collecting pipe (44), the bottom of the collecting pipe (44) is fixedly connected to a fixing ring (45), the inner wall of the collecting pipe (44) is slidably connected to a lifting ring (46) in a vertical direction, the fixing ring (45) and the lifting ring (46) are both provided with a plurality of through holes (47), the outer wall of the rotating tube (21) is provided with a reciprocating thread groove (48) threadedly connected to the inner wall of the lifting ring (46), a tension spring (49) is fixedly connected in the through hole (47), the bottom of the tension spring (49) is fixedly connected to a sealing block (50) slidably connected to the inner wall of the through hole (47) in a vertical direction, and the upper and lower ends of the lifting ring (46) are fixedly connected to a bellows (51) fixedly connected to the collecting pipe (44).

5. A flue gas desulfurization tower according to claim 1, characterized in that: The switching member (24) further comprises a driving motor (52) fixedly mounted on the base (1), the output end of the driving motor (52) being coaxially fixedly connected to a driving gear (53), and the outer wall of the bottom end of the rotating tube (21) being fixedly connected to a second outer gear ring (54) meshing with the driving gear (53).

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