Desulfurization device and desulfurization method for sulfur-containing flue gas desulfurization

Abstract

The invention belongs to the technical field of flue gas treatment, and discloses a desulfurization device for desulfurization of sulfur-containing flue gas, the desulfurization device comprises a bottom plate, and also comprises: a support assembly fixedly mounted on the top of the bottom plate; the desulfurization assembly is arranged on the supporting assembly; and the liquid injection assembly is arranged in the desulfurization assembly. Sulfur-containing flue gas is injected into the lime slurry storage cavity formed by the cover plate and the bottom plate, the flue gas makes contact with the lime slurry in the process, meanwhile, the flue gas forms bubbles in the lime slurry, and the bubbles move upwards along the annular corrugated cavity formed between the first corrugated cover and the second corrugated cover; due to the fact that the annular corrugated cavity and the lime slurry storage cavity are both filled with the lime slurry, the contact duration of the sulfur-containing flue gas and the lime slurry can be prolonged in the upward moving process of the sulfur-containing flue gas along the annular corrugated cavity, the separation effect of the sulfur-containing flue gas is improved, and meanwhile the failure rate of equipment is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas treatment, and in particular relates to a desulfurization device and a desulfurization method for desulfurizing sulfur-containing flue gas. Background Art

[0002] Sulfur-containing flue gas refers to the gas containing sulfur oxides produced when substances decompose or burn at high temperature. These sulfur oxides mainly include sulfur dioxide (SO2) and sulfur trioxide (SO3). Flue gas desulfurization methods are mainly divided into three categories: wet method, semi-dry method and dry method. Among them, wet flue gas desulfurization is to contact the flue gas with an alkaline solution (usually limestone or lime slurry) so that SO2 in the flue gas is absorbed and converted into sulfate or sulfite, thereby achieving the desulfurization process. This process is usually carried out in a wet absorption tower, and the flue gas contacts the sprayed alkaline solution in countercurrent, and a chemical reaction occurs to generate desulfurization products; currently, the lime slurry needs to pass through multiple spray heads during the spraying process of the desulfurization tower to ensure that the lime slurry is evenly filled in the desulfurization tower, but the spray heads are set up more and are prone to blockage or damage, which increases the failure rate of the equipment. At the same time, the flue gas cannot be guaranteed to contact with the lime slurry during the rising process in the desulfurization tower, thereby reducing the effect of flue gas desulfurization. Therefore, a desulfurization device and desulfurization method for desulfurization of sulfur-containing flue gas are proposed. Summary of the invention

[0003] In order to solve the problems raised in the above-mentioned background technology, the present invention provides a desulfurization device and a desulfurization method for desulfurization of sulfur-containing flue gas, which solves the problem that the existing desulfurization towers are easily blocked or damaged, thereby increasing the failure rate of the equipment. At the same time, the flue gas cannot be guaranteed to contact with the lime slurry during the rising process in the desulfurization tower, thereby reducing the flue gas desulfurization effect.

[0004] To achieve the above object, the present invention provides the following technical solution: a desulfurization device for desulfurization of sulfur-containing flue gas, comprising a bottom plate, and further comprising: A support assembly, wherein the support assembly is fixedly mounted on the top of the base plate; A desulfurization component, wherein the desulfurization component is arranged on the supporting component; A liquid injection assembly, one end of which is disposed inside the desulfurization assembly and is used to inject lime slurry into the desulfurization assembly; A gas injection component, one end of which is disposed inside the desulfurization component and is used to inject sulfur-containing flue gas into the desulfurization component; The desulfurization assembly comprises a top plate sleeved on the support assembly, a first support frame is fixedly mounted on the bottom of the top plate, a first corrugated cover is fixedly mounted on the bottom of the first support frame, a second support frame is movably connected to the inner wall of the first support frame through a cross docking frame, a second corrugated cover is fixedly mounted on the bottom of the second support frame, and a second docking ring is fixedly mounted on the bottom of the second corrugated cover; The first corrugated cover and the second corrugated cover have the same shape and form an annular corrugated cavity therebetween; The support assembly includes a guide rod fixedly mounted on the top of the bottom plate, a fixing frame fixedly mounted on the upper end of the guide rod, a cover plate sleeved on the guide rod, the cover plate pressed on the bottom plate to form a lime slurry storage cavity, and the annular corrugated cavity and the lime slurry storage cavity are filled with lime slurry; A cross connecting frame is fixedly mounted on the inner wall of the cover plate, the bottom of the second corrugated cover is movably sleeved on the cross connecting frame through a second docking ring, and the bottom of the first corrugated cover is fixedly connected to the top of the cover plate; The annular corrugated cavity formed between the first corrugated cover and the second corrugated cover is communicated with the inside of the cover plate; The sulfur-containing flue gas enters the cover plate through the gas injection assembly and moves upward along the annular corrugated cavity. During the upward movement, the sulfur-containing flue gas contacts the lime slurry.

[0005] Preferably, a transmission rod is movably sleeved on the second support frame, the transmission rod is a hollow structure, and the bottom end of the transmission rod is located inside the cover plate; A driving motor is fixedly mounted on the top of the fixing frame, and the transmission rod is assembled on the output end of the driving motor; A convex block is fixedly mounted on the outside of the transmission rod, and the transmission rod drives the second support frame and the second corrugated cover to rotate through the convex block.

[0006] Preferably, the desulfurization assembly further comprises a dispersion block fixedly mounted on the outside of the second corrugated cover, and rectangular through grooves are equidistantly formed on the dispersion block; The dispersion block is located in the annular corrugated cavity formed by the first corrugated cover and the second corrugated cover, and the dispersion block is made of corrosion-resistant rubber material.

[0007] Preferably, the gas injection assembly comprises a through groove opened on the outside of the transmission rod, the outer movable sleeve of the transmission rod is provided with a first docking ring, and the outside of the first docking ring is connected with a gas injection pipe; The first docking ring is connected to the inside of the transmission rod through a through slot.

[0008] Preferably, the liquid injection assembly comprises an injection tube fixedly mounted on the first support frame, one end of the injection tube is connected to the injection device, and the other end is fixedly mounted with an annular tube, and a spray hole is opened at the bottom of the annular tube.

[0009] Preferably, the spray hole is kept vertical to the top of the annular corrugated cavity; Lime slurry is injected into the annular corrugated cavity through the spray holes.

[0010] Preferably, the support assembly further comprises a first knob movably sleeved on the top of the cover plate, and a second knob movably sleeved on the bottom of the top plate; The upper and lower ends of the guide rod are respectively provided with thread grooves, and the second knob cooperates with the thread on the upper end of the guide rod to fix the position between the top plate and the guide rod; A rubber pad is fixedly mounted on the top of the bottom plate, and the first knob cooperates with the threaded groove at the lower end of the guide rod to make the cover plate contact with the rubber pad.

[0011] Preferably, a stabilizing frame is fixedly mounted in the middle of the guide rod, and the stabilizing frame is used to fix the air injection pipe and the liquid injection pipe, and the middle parts of the air injection pipe and the liquid injection pipe are corrugated.

[0012] The present invention also provides a method for desulfurization of sulfur-containing flue gas, comprising the following steps: S1, injecting the sulfur-containing flue gas into the lime slurry storage cavity formed by the cover plate and the bottom plate, and moving upward along the annular corrugated cavity formed between the first corrugated cover and the second corrugated cover. Since the annular corrugated cavity and the lime slurry storage cavity are both filled with lime slurry, the contact time between the sulfur-containing flue gas and the lime slurry can be increased during the upward movement of the sulfur-containing flue gas along the annular corrugated cavity; S2, driving the transmission rod, the second support frame, the second corrugated cover and the dispersion block to rotate by a driving motor. Since the dispersion block is located in the annular corrugated cavity, the upwardly moving sulfur-containing bubbles are dispersed by the dispersion block and the rectangular through groove to reduce the diameter of the bubbles, thereby increasing the contact area between the flue gas and the lime slurry; S3. According to the content of the smoke injected into the cover plate, the second knob is turned to drive the top plate, the first support frame, the second support frame and the second corrugated cover to move downward, so that the first corrugated cover and the second corrugated cover are compressed and shortened, thereby increasing the time for the smoke to move upward in the annular corrugated cavity; S4. By continuously rotating the second knob and moving it downward along the guide rod, the rubber pad is brought into contact with the inner wall of the first corrugated cover and squeezed. The transmission rod, the second support frame and the second corrugated cover can be driven by the driving motor to rotate, and the desulfurization products generated by the flue gas desulfurization are cleaned. At the same time, the second corrugated cover is designed to be corrugated, so that the desulfurization products generated by the flue gas desulfurization can fall along the outside of the second corrugated cover, thereby reducing the subsequent maintenance.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention injects sulfur-containing flue gas into the lime slurry storage cavity formed by the cover plate and the bottom plate. During this process, the flue gas contacts the lime slurry, and the flue gas forms bubbles in the lime slurry, and moves upward along the annular corrugated cavity formed between the first corrugated cover and the second corrugated cover. Since the annular corrugated cavity and the lime slurry storage cavity are both filled with lime slurry, the contact time between the sulfur-containing flue gas and the lime slurry can be increased during the upward movement of the sulfur-containing flue gas along the annular corrugated cavity, thereby improving the separation effect of the sulfur-containing flue gas and reducing the failure rate of the equipment. The present invention injects sulfur-containing flue gas into the cover plate, and the flue gas moves upward along the annular corrugated cavity. During the upward movement, a driving motor is used to drive a transmission rod, a second support frame, a second corrugated cover and a dispersion block to rotate. Since the dispersion block is located in the annular corrugated cavity, the upwardly moving sulfur-containing bubbles are dispersed by the dispersion block and the rectangular through grooves to reduce the diameter of the bubbles, thereby increasing the contact area between the flue gas and the lime slurry, thereby improving the effect of flue gas desulfurization and avoiding the problem of uneven contact between the flue gas and the lime slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the desulfurization component of the present invention; Figure 4 This is a schematic diagram of the coordination structure of the desulfurization assembly and the support assembly of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 7 For the present invention Figure 4 The enlarged structural diagram at C in the middle; Figure 8 It is a schematic diagram of the cross-sectional structure of the support assembly of the present invention.

[0015] In the figure: 1. bottom plate; 2. support assembly; 21. guide rod; 22. cover plate; 23. stabilizing frame; 24. fixing frame; 25. first knob; 26. rubber pad; 27. cross connecting frame; 28. second knob; 3. gas injection assembly; 31. gas injection pipe; 32. first docking ring; 33. through groove; 4. liquid injection assembly; 41. liquid injection pipe; 42. annular pipe; 43. spray hole; 5. desulfurization assembly; 50. second docking ring; 51. transmission rod; 52. top plate; 53. first support frame; 54. cross docking frame; 55. second support frame; 56. dispersion block; 57. rectangular through groove; 58. first corrugated cover; 59. second corrugated cover. DETAILED DESCRIPTION

[0016] 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.

[0017] like Figures 1 to 8 As shown, the present invention provides a desulfurization device for desulfurization of sulfur-containing flue gas, comprising a bottom plate 1, and further comprising: A support assembly 2, the support assembly 2 is fixedly mounted on the top of the base plate 1; A desulfurization component 5, the desulfurization component 5 is arranged on the support component 2; A liquid injection component 4, one end of which is disposed inside the desulfurization component 5 and is used to inject lime slurry into the desulfurization component 5; A gas injection component 3, one end of which is disposed inside the desulfurization component 5 and is used to inject sulfur-containing flue gas into the desulfurization component 5; The desulfurization assembly 5 includes a top plate 52 sleeved on the support assembly 2, a first support frame 53 is fixedly mounted on the bottom of the top plate 52, a first corrugated cover 58 is fixedly mounted on the bottom of the first support frame 53, a second support frame 55 is movably connected to the inner wall of the first support frame 53 through a cross docking frame 54, a second corrugated cover 59 is fixedly mounted on the bottom of the second support frame 55, and a second docking ring 50 is fixedly mounted on the bottom of the second corrugated cover 59; The first corrugated cover 58 and the second corrugated cover 59 have the same shape, and form an annular corrugated cavity therebetween; The support assembly 2 includes a guide rod 21 fixedly mounted on the top of the bottom plate 1, a fixing frame 24 is fixedly mounted on the upper end of the guide rod 21, a cover plate 22 is sleeved on the guide rod 21, and the cover plate 22 is pressed on the bottom plate 1 to form a lime slurry storage cavity, and the annular corrugated cavity and the lime slurry storage cavity are filled with lime slurry; The inner wall of the cover plate 22 is fixedly provided with a cross connecting frame 27, the bottom of the second bellows 59 is movably sleeved on the cross connecting frame 27 through the second docking ring 50, and the bottom of the first bellows 58 is fixedly connected to the top of the cover plate 22; The annular corrugated cavity formed between the first corrugated cover 58 and the second corrugated cover 59 is connected to the cover plate 22; The sulfur-containing flue gas enters the cover plate 22 through the gas injection assembly 3 and moves upward along the annular corrugated cavity. During the upward movement, the sulfur-containing flue gas contacts the lime slurry.

[0018] The sulfur-containing flue gas is injected into the lime slurry storage chamber formed by the cover plate 22 and the bottom plate 1 through the gas injection assembly 3. During this process, the flue gas contacts the lime slurry and forms bubbles in the lime slurry. The flue gas moves upward along the annular corrugated cavity formed between the first corrugated cover 58 and the second corrugated cover 59. Since the annular corrugated cavity and the lime slurry storage chamber are both filled with lime slurry, the contact time between the sulfur-containing flue gas and the lime slurry can be increased during the upward movement of the sulfur-containing flue gas along the annular corrugated cavity, thereby improving the separation effect of the sulfur-containing flue gas and reducing the failure rate of the equipment.

[0019] like Figure 1-Figure 5 As shown, a transmission rod 51 is movably sleeved on the second support frame 55, and the transmission rod 51 is a hollow structure, and the bottom end of the transmission rod 51 is located in the cover plate 22; A driving motor is fixedly mounted on the top of the fixing frame 24, and a transmission rod 51 is mounted on the output end of the driving motor; The transmission rod 51 is provided with a protrusion fixed on its exterior, and the transmission rod 51 drives the second support frame 55 and the second bellows 59 to rotate through the protrusion. The desulfurization assembly 5 further includes a dispersion block 56 fixedly mounted on the outside of the second corrugated cover 59, and rectangular through grooves 57 are equidistantly formed on the dispersion block 56; The dispersion block 56 is located in the annular corrugated cavity formed by the first corrugated cover 58 and the second corrugated cover 59 , and the dispersion block 56 is made of corrosion-resistant rubber material.

[0020] The sulfur-containing flue gas is injected into the cover plate 22 through the gas injection assembly 3 and the transmission rod 51, and the flue gas moves upward along the annular corrugated cavity. During the upward movement, the transmission rod 51, the second support frame 55, the second corrugated cover 59 and the dispersion block 56 are driven to rotate by the driving motor. Since the dispersion block 56 is located in the annular corrugated cavity, the upward sulfur-containing bubbles are dispersed by the dispersion block 56 and the rectangular through groove 57 to reduce the diameter of the bubbles, thereby increasing the contact area between the flue gas and the lime slurry, thereby improving the effect of flue gas desulfurization and avoiding the problem of uneven contact between the flue gas and the lime slurry.

[0021] like Figure 6 As shown, the gas injection assembly 3 includes a through groove 33 opened on the outside of the transmission rod 51, and the outer movable sleeve of the transmission rod 51 is provided with a first docking ring 32, and the outside of the first docking ring 32 is connected to the gas injection pipe 31; The first docking ring 32 is connected to the inside of the transmission rod 51 through the through slot 33 .

[0022] The gas injection pipe 31 is connected to the gas injection equipment. The gas injection equipment injects the sulfur-containing flue gas into the transmission rod 51 through the gas injection pipe 31, the first docking ring 32 and the through groove 33, and then injects it into the cover plate 22 through the transmission rod 51, and moves upward along the annular corrugated cavity for desulfurization treatment. The driving motor drives the transmission rod 51, the second support frame 55 and the second corrugated cover 59 to rotate, and the sulfur-containing flue gas is dispersed. During the rotation of the transmission rod 51, since the first docking ring 32 is movably sleeved on the outside of the transmission rod 51, gas can be normally injected into the transmission rod 51 through the first docking ring 32 and the through groove 33.

[0023] like Figure 7 As shown, the liquid injection assembly 4 includes a liquid injection pipe 41 fixedly mounted on the first support frame 53, one end of the liquid injection pipe 41 is connected to the liquid injection device, and the other end is fixedly mounted with an annular pipe 42, and a spray hole 43 is opened at the bottom of the annular pipe 42; The spray hole 43 is kept vertical to the top of the annular corrugated cavity; Lime slurry is injected into the annular corrugated cavity through the spray holes 43 .

[0024] The injection device injects lime slurry into the first support frame 53 through the injection pipe 41, the annular pipe 42 and the spray hole 43. Since the spray hole 43 and the top of the annular corrugated cavity remain vertical, the flue gas moves upward along the annular corrugated cavity, and the lime slurry injected through the spray hole 43 impacts the upward bubbles, further reducing the diameter of the upward bubbles of the flue gas, thereby ensuring the effect of flue gas desulfurization.

[0025] like Figure 2 , Figure 4 and Figure 8 As shown, the support assembly 2 further includes a first knob 25 movably sleeved on the top of the cover plate 22, and a second knob 28 movably sleeved on the bottom of the top plate 52; The upper and lower ends of the guide rod 21 are respectively provided with thread grooves, and the second knob 28 and the upper end of the guide rod 21 are threadedly matched to fix the position between the top plate 52 and the guide rod 21; A rubber pad 26 is fixedly mounted on the top of the bottom plate 1, and the first knob 25 cooperates with the threaded groove at the lower end of the guide rod 21 to make the cover plate 22 contact with the rubber pad 26; A stabilizing frame 23 is fixedly mounted in the middle of the guide rod 21 . The stabilizing frame 23 is used to fix the gas injection pipe 31 and the liquid injection pipe 41 . The middle parts of the gas injection pipe 31 and the liquid injection pipe 41 are corrugated.

[0026] According to the content of the flue gas injected into the cover plate 22, the second knob 28 is rotated to drive the top plate 52, the first support frame 53, the second support frame 55 and the second corrugated cover 59 to move downward, so that the first corrugated cover 58 and the second corrugated cover 59 are compressed and shortened, thereby increasing the time for the flue gas to move upward in the annular corrugated cavity, thereby ensuring the flue gas desulfurization treatment effect. At the same time, by continuously rotating the second knob 28 and moving downward along the guide rod 21, the rubber pad 26 is in contact with the inner wall of the first corrugated cover 58 and squeezes the rubber pad 26, and the driving motor can be used to drive the transmission rod 51, the second support frame 55 and the second corrugated cover 59 to rotate, and the desulfurization products generated by flue gas desulfurization are cleaned. At the same time, the second corrugated cover 59 is designed to be corrugated, so that the desulfurization products generated by flue gas desulfurization can fall along the outside of the second corrugated cover 59, reducing the later maintenance; After the desulfurization equipment is used, the cover plate 22 is driven to move upward along the guide rod 21 by rotating the first knob 25 so that the cover plate 22 is out of contact with the rubber pad 26 , and the flue gas desulfurization products deposited on the top of the bottom plate 1 can be cleaned.

[0027] The present invention also provides a method for desulfurization of sulfur-containing flue gas, comprising the following steps: S1, injecting the sulfur-containing flue gas into the lime slurry storage cavity formed by the cover plate 22 and the bottom plate 1, and moving upward along the annular corrugated cavity formed between the first corrugated cover 58 and the second corrugated cover 59. Since the annular corrugated cavity and the lime slurry storage cavity are both filled with lime slurry, the contact time between the sulfur-containing flue gas and the lime slurry can be increased during the upward movement of the sulfur-containing flue gas along the annular corrugated cavity; S2, the driving motor drives the transmission rod 51, the second support frame 55, the second corrugated cover 59 and the dispersion block 56 to rotate. Since the dispersion block 56 is located in the annular corrugated cavity, the upwardly moving sulfur-containing bubbles are dispersed by the dispersion block 56 and the rectangular through groove 57 to reduce the diameter of the bubbles, thereby increasing the contact area between the flue gas and the lime slurry; S3. According to the content of the smoke injected into the cover plate 22, the second knob 28 is turned to drive the top plate 52, the first support frame 53, the second support frame 55 and the second corrugated cover 59 to move downward, so that the first corrugated cover 58 and the second corrugated cover 59 are compressed and shortened, thereby increasing the time for the smoke to move upward in the annular corrugated cavity; S4. By continuously rotating the second knob 28 and moving it downward along the guide rod 21, the rubber pad 26 is brought into contact with the inner wall of the first corrugated cover 58 and squeezed. The transmission rod 51, the second support frame 55 and the second corrugated cover 59 can be driven by the driving motor to rotate, and the desulfurization products generated by the flue gas desulfurization are cleaned. At the same time, the second corrugated cover 59 is designed to be corrugated, so that the desulfurization products generated by the flue gas desulfurization can fall along the outside of the second corrugated cover 59, thereby reducing the subsequent maintenance.

[0028] 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.

[0029] 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 desulfurization device for desulfurizing sulfur-containing flue gas, comprising a bottom plate (1), characterized in that: Also includes: A support assembly (2), the support assembly (2) being fixedly mounted on the top of the base plate (1); A desulfurization component (5), wherein the desulfurization component (5) is arranged on the support component (2); a liquid injection assembly (4), one end of the liquid injection assembly (4) being arranged inside the desulfurization assembly (5) and being used for injecting lime slurry into the desulfurization assembly (5); A gas injection component (3), one end of the gas injection component (3) being arranged inside the desulfurization component (5) and used for injecting sulfur-containing flue gas into the desulfurization component (5); The desulfurization assembly (5) comprises a top plate (52) sleeved on the support assembly (2); a first support frame (53) is fixedly mounted on the bottom of the top plate (52); a first corrugated cover (58) is fixedly mounted on the bottom of the first support frame (53); a second support frame (55) is movably connected to the inner wall of the first support frame (53) via a cross docking frame (54); a second corrugated cover (59) is fixedly mounted on the bottom of the second support frame (55); and a second docking ring (50) is fixedly mounted on the bottom of the second corrugated cover (59); The first corrugated cover (58) and the second corrugated cover (59) have the same shape, and form an annular corrugated cavity therebetween; The support assembly (2) comprises a guide rod (21) fixedly mounted on the top of the base plate (1), a fixing frame (24) being fixedly mounted on the upper end of the guide rod (21), a cover plate (22) being sleeved on the guide rod (21), the cover plate (22) being pressed onto the base plate (1) to form a lime slurry storage cavity, and the annular corrugated cavity and the lime slurry storage cavity are filled with lime slurry; A cross connecting frame (27) is fixedly mounted on the inner wall of the cover plate (22); the bottom of the second corrugated cover (59) is movably sleeved on the cross connecting frame (27) via a second docking ring (50); and the bottom of the first corrugated cover (58) is fixedly connected to the top of the cover plate (22); The annular corrugated cavity formed between the first corrugated cover (58) and the second corrugated cover (59) is in communication with the interior of the cover plate (22); The sulfur-containing flue gas enters the cover plate (22) through the gas injection assembly (3) and moves upward along the annular corrugated cavity. During the upward movement, the sulfur-containing flue gas contacts the lime slurry.

2. The desulfurization device for desulfurization of sulfur-containing flue gas according to claim 1, characterized in that: A transmission rod (51) is movably sleeved on the second support frame (55), the transmission rod (51) is a hollow structure, and the bottom end of the transmission rod (51) is located inside the cover plate (22); A driving motor is fixedly mounted on the top of the fixing frame (24), and the transmission rod (51) is mounted on the output end of the driving motor; The transmission rod (51) drives the second support frame (55) and the second corrugated cover (59) to rotate.

3. The desulfurization device for desulfurization of sulfur-containing flue gas according to claim 2 is characterized in that: The desulfurization assembly (5) further comprises a dispersion block (56) fixedly mounted on the outside of the second corrugated cover (59), and rectangular through grooves (57) are formed at equal intervals on the dispersion block (56); The dispersion block (56) is located in an annular corrugated cavity formed by the first corrugated cover (58) and the second corrugated cover (59), and the dispersion block (56) is made of a corrosion-resistant rubber material.

4. The desulfurization device for desulfurization of sulfur-containing flue gas according to claim 2, characterized in that: The gas injection assembly (3) comprises a through groove (33) formed on the outside of the transmission rod (51); the outer movable sleeve of the transmission rod (51) is provided with a first docking ring (32); the outside of the first docking ring (32) is connected to a gas injection pipe (31); The first docking ring (32) is connected to the inside of the transmission rod (51) via a through slot (33).

5. The desulfurization device for desulfurization of sulfur-containing flue gas according to claim 4, characterized in that: The liquid injection assembly (4) comprises a liquid injection pipe (41) fixedly mounted on the first support frame (53), one end of the liquid injection pipe (41) being connected to a liquid injection device, and the other end of the liquid injection pipe (41) being fixedly mounted to an annular pipe (42), the bottom of the annular pipe (42) being provided with a spray hole (43).

6. The desulfurization device for desulfurization of sulfur-containing flue gas according to claim 5, characterized in that: The spray hole (43) is kept vertical to the top of the annular corrugated cavity; Lime slurry is injected into the annular corrugated cavity through the spray hole (43).

7. The desulfurization device for desulfurization of sulfur-containing flue gas according to claim 6, characterized in that: The support assembly (2) further comprises a first knob (25) movably sleeved on the top of the cover plate (22), and a second knob (28) movably sleeved on the bottom of the top plate (52); The upper and lower ends of the guide rod (21) are respectively provided with thread grooves, and the second knob (28) is threadedly matched with the upper end of the guide rod (21) to fix the position between the top plate (52) and the guide rod (21); A rubber pad (26) is fixedly mounted on the top of the bottom plate (1), and the first knob (25) cooperates with the threaded groove at the lower end of the guide rod (21) to allow the cover plate (22) to contact the rubber pad (26).

8. The desulfurization device for desulfurization of sulfur-containing flue gas according to claim 7, characterized in that: A stabilizing frame (23) is fixedly mounted in the middle of the guide rod (21), and the stabilizing frame (23) is used to fix the air injection pipe (31) and the liquid injection pipe (41), and the middle parts of the air injection pipe (31) and the liquid injection pipe (41) are corrugated.

9. A method for desulfurization of sulfur-containing flue gas, using the desulfurization device for desulfurization of sulfur-containing flue gas as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1, injecting the sulfur-containing flue gas into the lime slurry storage cavity formed by the cover plate (22) and the bottom plate (1), and moving the sulfur-containing flue gas upward along the annular corrugated cavity formed between the first corrugated cover (58) and the second corrugated cover (59); since the annular corrugated cavity and the lime slurry storage cavity are both filled with lime slurry, the contact time between the sulfur-containing flue gas and the lime slurry can be increased during the process of the sulfur-containing flue gas moving upward along the annular corrugated cavity; S2, driving the transmission rod (51), the second support frame (55), the second corrugated cover (59) and the dispersion block (56) to rotate by means of a driving motor; since the dispersion block (56) is located in the annular corrugated cavity, the upwardly moving sulfur-containing bubbles are dispersed by means of the dispersion block (56) and the rectangular through groove (57), thereby reducing the diameter of the bubbles and increasing the contact area between the flue gas and the lime slurry; S3, according to the content of the smoke injected into the cover plate (22), the second knob (28) is rotated to drive the top plate (52), the first support frame (53), the second support frame (55) and the second corrugated cover (59) to move downward, so that the first corrugated cover (58) and the second corrugated cover (59) are compressed and the distance between them is shortened, thereby increasing the time that the smoke moves upward and stays in the annular corrugated cavity; S4. By continuously rotating the second knob (28) and moving it downward along the guide rod (21), the rubber pad (26) is brought into contact with the inner wall of the first corrugated cover (58) and the rubber pad (26) is squeezed, and the driving motor can be used to drive the transmission rod (51), the second support frame (55) and the second corrugated cover (59) to rotate, thereby cleaning the desulfurization products generated by the flue gas desulfurization. At the same time, the second corrugated cover (59) is designed to be corrugated, so that the desulfurization products generated by the flue gas desulfurization can fall along the outside of the second corrugated cover (59), thereby reducing the subsequent maintenance.

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