Vortex compression semi-dry desulfurization equipment for flue gas at dry quenching section

Abstract

The invention belongs to the technical field of flue gas purification and desulfurization, and particularly relates to dry quenching section flue gas vortex compression semi-dry desulfurization equipment which comprises a desulfurization tower assembly, a rotary injection assembly is arranged in the desulfurization tower assembly, one side of the desulfurization tower assembly is connected with a front purification assembly, and the other side of the desulfurization tower assembly is connected with a rear purification assembly. The other side of the desulfurization tower assembly is connected with a gas inlet adjusting assembly arranged on a bag dust removal assembly through a pipeline I, the bag dust removal assembly is connected with a chimney through a fan, flue gas is pressurized through a vortex fan and fed into a front purification assembly, dust particles in the flue gas in the front purification assembly are filtered, and the dust particles in the flue gas in the front purification assembly are purified; the flue gas subjected to primary purification enters the desulfurization tower assembly, a vulcanizing agent sprayed by the rotary spraying assembly is mixed with sulfur dioxide in the flue gas for reaction, generated solid powder is wrapped by the flue gas to leave the desulfurization tower assembly and enters the cloth bag dust removal assembly through a pipeline I, and the solid powder is filtered and collected by the cloth bag dust removal assembly; and the purified flue gas is discharged into the atmosphere through the chimney under the action of the fan.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas purification and desulfurization, and in particular relates to a vortex compression semi-dry desulfurization device for flue gas from a dry quenching section. Background Art

[0002] In the flue gas desulfurization process, the dry desulfurization method using calcium hydroxide as a desulfurizer is often referred to as dry desulfurization or, more specifically, spray drying desulfurization or dry injection. Although called "dry," strictly speaking, it involves atomizing and spraying a slurry into hot flue gas, where the water evaporates rapidly, resulting in a dry powder as the final product. Therefore, it is often classified as a semi-dry method. Its core principle is to utilize calcium hydroxide to react with sulfur dioxide in the flue gas to produce solid byproducts such as calcium sulfite and calcium sulfate, thereby achieving the purpose of desulfurization. Existing technologies often lack pre-purification components, resulting in a high level of particulate matter in the flue gas, seriously affecting the desulfurization effect. Furthermore, the injection pattern and direction of the sulfiding agent are relatively fixed, resulting in poor flue gas desulfurization effectiveness for sulfur content. Summary of the Invention

[0003] The purpose of the present invention is to provide a semi-dry desulfurization equipment for flue gas from the CDQ stage by vortex compression to solve the problems in the prior art. The specific technical solution is as follows: A semi-dry desulfurization device for flue gas from a dry quenching section using vortex compression includes a desulfurization tower assembly. A rotary jet assembly is provided in the desulfurization tower assembly. One side of the desulfurization tower assembly is connected to a pre-purification assembly. The other side of the desulfurization tower assembly is connected to an air intake adjustment assembly provided on a bag dust removal assembly through a pipe. The bag dust removal assembly is connected to a chimney through a fan.

[0004] Furthermore, the pre-purification component includes an air intake contraction tube, which is connected to the diffuser through a throat pipe. The diffuser is fixed on the side of the desulfurization tower component. A support tube is provided between the air intake contraction tube and the diffuser. An annular tube is fixed inside the support tube. The annular tube is connected to the throat through multiple water outlet pipes, and the annular tube is connected to the water inlet pipe.

[0005] Furthermore, the desulfurization tower assembly includes a desulfurization tower lower shell, a diffusion pipe is fixed to the side of the desulfurization tower lower shell, a water pool is provided at the lower end of the desulfurization tower lower shell, a ball valve is provided at the bottom of the water pool, and a baffle is provided inside the desulfurization tower lower shell.

[0006] Furthermore, the lower shell of the desulfurization tower is fixedly connected to the upper shell of the desulfurization tower, and the upper shell of the desulfurization tower is connected to the air intake adjustment assembly arranged on the bag dust removal assembly through a pipe 1. A reaction cylinder is provided in the upper shell of the desulfurization tower, and the upper end of the lower shell of the desulfurization tower is located in the reaction cylinder. The lower end of the reaction cylinder is fixed to the connection between the lower shell of the desulfurization tower and the upper shell of the desulfurization tower through a support rod. A guide cylinder is fixed on the top of the upper shell of the desulfurization tower, the rotary injection assembly is fixed to the upper end of the upper shell of the desulfurization tower, and the lower end of the rotary injection assembly is located in the reaction cylinder.

[0007] Furthermore, the rotary injection assembly includes a top cover, which is fixed to the upper end of the desulfurization tower upper shell, the top cover is fixedly connected to motor 1, the output end of motor 1 is connected to gear 1, gear 1 is rotatably connected to a bracket fixed on the top cover, gear 1 is meshed with a double gear for transmission, the double gears rotate between the top cover and the bracket, the double gears are meshed with gear 2 for transmission, gear 2 is fixedly connected to the upper rotor through an outer rotating cylinder, and the outer rotating cylinder is rotatably connected to the top cover.

[0008] A protective shell is fixed on the upper end of the top cover.

[0009] Furthermore, the upper end of the upper rotating head is rotatably connected to a cover plate, which is fixedly connected to the bottom of the top cover through a fixing plate, and the cover plate is connected to one end of the feed pipe. Three rotating rods are fixed on the upper rotating head at equal intervals in the circumference, and multiple rotating nozzle assemblies are linearly and evenly arranged on the rotating rod.

[0010] Furthermore, the gear one is meshed with the gear three for transmission, the gear three is fixedly connected to the lower rotor through the inner rotor, the inner rotor rotates in the outer rotor, the bracket is fixedly connected to the two ends of the feed pipe, one end of the feed pipe two rotates in the gear three, the other end of the feed pipe two and the other end of the feed pipe one are both connected to the feed main pipe, three rotating rods two are fixed on the lower rotor at equal intervals in the circumference, and a plurality of rotating nozzle assemblies are linearly and evenly arranged on the rotating rod two.

[0011] Furthermore, the rotating nozzle assembly includes a threaded head, the upper end of the threaded head is threadedly connected to the rotating rod 2, the lower end of the threaded head is rotatably connected to the rotating column, a small rotating head is fixed to the lower end of the rotating column, three curved rods are fixed on the small rotating head at equal intervals around the circumference, and a discharge hole is provided on the inner side of the end of the curved rod.

[0012] Furthermore, the bag dust collection assembly includes a dust collector shell, a fixed frame is fixed to the outside of the dust collector shell, an air intake adjustment assembly is slidably connected between the dust collector shell and the fixed frame, the dust collector shell is divided into dust collection chamber 1 and dust collection chamber 2 by a partition, and dust collection chamber 1 and dust collection chamber 2 are both fixed with a fixed plate 2, fixed plate 2 is fixedly connected to the bag bracket, and the bag bracket is outerly provided with a bag, a blow pipe is provided in the dust collector shell, the blow nozzle provided on the blow pipe is located at the upper end of the bag bracket, the blow pipe is connected to the air bag through an electromagnetic pulse valve, the smoke outlets of dust collection chamber 1 and dust collection chamber 2 are both connected to one end of pipe 2, and the other end of pipe 2 is connected to the fan, and a motor 3 is fixed to the lower end of the dust collector shell, the output end of motor 3 is connected to the ash discharge wheel, and the ash discharge wheel rotates in the dust collector shell.

[0013] Furthermore, the air intake adjustment assembly includes a slide plate, which slides between the side of the dust collector housing and the fixed frame. A connecting hole is provided at the center of the slide plate, and smoke inlet hole 1 and smoke inlet hole 2 are provided on the side wall of the dust collector housing. The dust collector housing is fixedly connected to motor 2 through a motor bracket, and the output end of motor 2 is connected to gear 4, which is engaged with the rack for transmission. The rack is provided at the lower end of the slide bar, and the slide bar is slidably connected to the movable frame. The end of the slide bar is connected to the outer side of the movable frame through a spring, the upper end of the movable frame is fixedly connected to the slide plate, and a shift rod is provided at the lower end of the movable frame. Switch 1 and switch 2 are respectively provided on both sides of the shift rod. Switch 1 and switch 2 are both electrically connected to the controller, and the electromagnetic pulse valve is electrically connected to the controller. The controller is fixedly installed on the outer side of the dust collector housing.

[0014] The advantages of the present invention are: The flue gas is pressurized by a vortex fan and sent into the pre-purification component, where the dust particles in the flue gas are filtered to reduce the impact of particulate matter on the flue gas desulfurization effect. The flue gas after the particulate matter is filtered enters the desulfurization tower component. The rotating injection component in the desulfurization tower component can spray the sulfiding agent at multiple angles and a large range. The sulfiding agent and the sulfur dioxide in the flue gas are fully mixed and reacted. The moisture in the sulfiding agent is rapidly evaporated by the high-temperature flue gas, and the solid powder generated by the reaction is carried away by the flue gas and leaves the desulfurization tower component, and enters the bag dust removal component through pipe 1. The solid powder generated by the reaction is collected by the bag dust removal component, and the air intake adjustment component can make the bag dust removal component work continuously to increase the dust removal efficiency. The desulfurized flue gas is discharged into the atmosphere through the chimney under the action of the fan, which helps to improve air quality and protect human health and the environment by reducing the emission of sulfur dioxide in the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the desulfurization tower assembly structure of the present invention Figure 1 ; Figure 3 Schematic diagram of the desulfurization tower assembly structure of the present invention Figure 2 ; Figure 4 This is a schematic diagram of the structure of the pre-purification component of the present invention Figure 1 ; Figure 5 This is a schematic diagram of the structure of the pre-purification component of the present invention Figure 2 ; Figure 6 The rotary jetting assembly structure of the present invention is schematically shown. Figure 1 ; Figure 7 The rotary jetting assembly structure of the present invention is schematically shown. Figure 2 ; Figure 8The rotary jetting assembly structure of the present invention is schematically shown. Figure 3 ; Figure 9 for Figure 8 A partial enlarged view of the middle A; Figure 10 The structure of the bag dust removal component of the present invention is shown as follows Figure 1 ; Figure 11 The structure of the bag dust removal component of the present invention is shown as follows Figure 2 ; Figure 12 The structure of the bag dust removal component of the present invention is shown as follows Figure 3 ; Figure 13 The structure of the bag dust removal component of the present invention is shown as follows Figure 4 ; Figure 14 The structure of the bag dust removal component of the present invention is shown as follows Figure 5 ; Figure 15 The structure of the bag dust removal component of the present invention is shown as follows Figure 6 ; Figure 16 A partial exploded view of the bag dust removal assembly of the present invention; Figure 17 Schematic diagram of the sliding rod and rack structure of the present invention; Description of the marks in the figure: Inlet contraction pipe 1; throat 2; diffuser 3; water inlet pipe 4; annular pipe 5; water outlet pipe 6; support pipe 7; desulfurization tower lower shell 8; water tank 9; ball valve 10; baffle 11; desulfurization tower upper shell 12; reaction cylinder 13; guide cylinder 14; pipeline 15; protective shell 16; top cover 17; motor 18; gear 19; bracket 20; double gear 21; gear 22; outer drum 23; upper rotor 24; rotating rod 1 25; cover plate 26; fixing plate 27; feed pipe 1 28; gear 3 29; inner drum 30; lower rotor 31; threaded head 32; rotating column 33; small rotor 34; bent rod 35; discharge hole 36; feed pipe 2 37; feed main pipe 38; rotating rod 2 39; dust collector housing 40; slide plate 41; motor 2 42; gear 43; slide rod 44; spring 45; moving frame 46; lever 47; switch 1 48; switch 2 49; controller 50; air bag 51; electromagnetic pulse valve 52; blow pipe 53; blow nozzle 54; partition 55; dust removal chamber 1 56; dust removal chamber 2 57; smoke inlet 1 58; smoke inlet 2 59; fixed plate 2 60; cloth bag bracket 61; cloth bag 62; pipe 2 63; motor 3 64; ash discharge wheel 65; fan 66; chimney 67; fixed frame 68; rack 69. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] Example 1 like Figures 1-17 As shown, a vortex compression semi-dry desulfurization device for flue gas from a dry coke quenching stage includes a desulfurization tower assembly, a rotary injection assembly is provided in the desulfurization tower assembly, a pre-purification assembly is connected to one side of the desulfurization tower assembly, and the other side of the desulfurization tower assembly is connected to an air intake adjustment assembly provided on a bag dust removal assembly via a pipe 15. The bag dust removal assembly is connected to a chimney 67 via a fan 66; The working principle of the above technical solution is: the flue gas is pressurized by a vortex fan and sent into the pre-purification component, the dust particles in the flue gas in the pre-purification component are filtered, reducing the impact of particulate matter on the flue gas desulfurization effect, the flue gas after the particulate matter is filtered enters the desulfurization tower component, the rotating injection component in the desulfurization tower component sprays the sulfiding agent, the sulfiding agent mixes and reacts with sulfur dioxide in the flue gas, the moisture in the sulfiding agent is rapidly evaporated by the high-temperature flue gas, the solid powder generated by the reaction is entrained by the flue gas and leaves the desulfurization tower component, and enters the bag dust removal component through pipe 15, the solid powder generated by the reaction is collected by the bag dust removal component, and the bag dust removal component can be made to work continuously through the air intake adjustment component to increase the dust removal efficiency. The desulfurized flue gas is discharged into the atmosphere through the chimney 67 under the action of the fan 66.

[0019] Example 2 like Figures 1-17 As shown, the pre-purification component includes an air intake contraction tube 1, which is connected to a diffuser tube 3 through a throat tube 2. The diffuser tube 3 is fixed to the side of the desulfurization tower component. A support tube 7 is provided between the air intake contraction tube 1 and the diffuser tube 3. An annular tube 5 is fixed inside the support tube 7. The annular tube 5 is connected to the throat tube 2 through multiple water outlet pipes 6. The annular tube 5 is connected to the water inlet pipe 4. The desulfurization tower assembly includes a desulfurization tower lower shell 8, a diffusion pipe 3 fixed to the side of the desulfurization tower lower shell 8, a water pool 9 is provided at the lower end of the desulfurization tower lower shell 8, a ball valve 10 is provided at the bottom of the water pool 9, and a baffle 11 is provided in the desulfurization tower lower shell 8; The working principle of the above technical solution is as follows: the flue gas is pressurized by the vortex fan and sent into the contraction tube 1, water enters the annular tube 5 from the water inlet pipe 4, and is sprayed into the throat pipe 2 through multiple water outlet pipes 6, the flue gas mixes with water in the throat pipe 2 and accelerates the flow, forming water mist at the diffusion pipe 3, and when the water mist enters the lower shell 8 of the desulfurization tower, the dust-laden water mist settles into the water pool 9 under the action of gravity, and some fine dust particles are captured and condensed by the baffle 11 and fall into the water pool 9, and the flue gas after preliminary purification continues to rise and reacts with the sulfiding agent sprayed by the rotating injection assembly to undergo desulfurization. The pre-purification assembly can reduce the influence of particulate matter on the flue gas desulfurization effect and increase the desulfurization effect; The water injected into the throat pipe 2 can be selected at different temperatures according to actual needs to ensure that the flue gas maintains the optimal temperature during the desulfurization process, thereby achieving the best desulfurization effect; A grid-shaped demister sheet may be provided above the deflector 11 to remove water mist from the flue gas.

[0020] Example 3 like Figures 1-17 As shown, the desulfurization tower lower shell 8 is fixedly connected to the desulfurization tower upper shell 12, and the desulfurization tower upper shell 12 is connected to the air intake adjustment component provided on the bag dust removal component through a pipe 15. A reaction cylinder 13 is provided in the desulfurization tower upper shell 12, and the upper end of the desulfurization tower lower shell 8 is located in the reaction cylinder 13. The lower end of the reaction cylinder 13 is fixed to the connection between the desulfurization tower lower shell 8 and the desulfurization tower upper shell 12 through a support rod. A guide cylinder 14 is fixed on the top of the desulfurization tower upper shell 12, and a rotary injection assembly is fixed to the upper end of the desulfurization tower upper shell 12, and the lower end of the rotary injection assembly is located in the reaction cylinder 13; The working principle of the above technical solution is: the flue gas after preliminary purification enters the reaction tube 13, and the rotating injection assembly sprays the sulfiding agent into the reaction tube 13. The sulfiding agent mixes and reacts with the sulfur dioxide in the flue gas in the reaction tube 13. The sulfiding agent and the solid powder generated by the reaction are entrained by the accelerated rising flue gas, rise in the reaction tube 13, and descend between the reaction tube 13 and the guide tube 14. Part of the flue gas enters the reaction tube 13 again through the reaction tube 13, and part of the flue gas rises between the guide tube 14 and the inner wall of the desulfurization tower upper shell 12, and is discharged from the pipe 15 into the bag dust removal assembly. The sulfiding agent and the flue gas experience intense turbulence and collision in the desulfurization tower upper shell 12, which accelerates the removal speed and removal rate of sulfur dioxide in the flue gas.

[0021] Example 4 like Figures 1-17As shown, the rotary injection assembly includes a top cover 17, which is fixed to the upper end of the desulfurization tower upper shell 12, and the top cover 17 is fixedly connected to a motor 18. The output end of the motor 18 is connected to a gear 19, and the gear 19 is rotatably connected to a bracket 20 fixed on the top cover 17. The gear 19 is meshed with a double gear 21 for transmission, and the double gear 21 rotates between the top cover 17 and the bracket 20. The double gear 21 is meshed with a gear 22 for transmission, and the gear 22 is fixedly connected to the upper rotor 24 through an outer rotating cylinder 23, and the outer rotating cylinder 23 is rotatably connected to the top cover 17.

[0022] A protective shell 16 is fixedly mounted on the upper end of the top cover 17; The upper end of the upper rotating head 24 is rotatably connected to a cover plate 26, which is fixedly connected to the bottom of the top cover 17 through a fixing plate 27. The cover plate 26 is connected to one end of a feed pipe 28. Three rotating rods 25 are fixed to the upper rotating head 24 at equal intervals in the circumference, and a plurality of rotating nozzle assemblies are linearly and equidistantly arranged on the rotating rods 25. The gear 19 is meshed with the gear 3 29 for transmission. The gear 3 29 is fixedly connected to the lower turret 31 through the inner drum 30. The inner drum 30 rotates in the outer drum 23. The bracket 20 is fixedly connected to the end of the feed pipe 2 37. One end of the feed pipe 2 37 rotates in the gear 3 29. The other end of the feed pipe 2 37 and the other end of the feed pipe 1 28 are both connected to the feed main pipe 38. Three rotating rods 2 39 are fixed to the lower turret 31 at equal intervals in the circumference. A plurality of rotating nozzle assemblies are linearly and equidistantly arranged on the rotating rods 2 39. The rotary nozzle assembly includes a threaded head 32, the upper end of the threaded head 32 is threadedly connected to the rotating rod 39, the lower end of the threaded head 32 is rotatably connected to the rotating column 33, the lower end of the rotating column 33 is fixed with a small rotating head 34, and the small rotating head 34 is fixed with three curved rods 35 equidistantly around the circumference, and the inner side of the end of the curved rod 35 is provided with a discharge hole 36; The working principle of the above technical solution is as follows: the sulfiding agent is injected into the feed pipe 1 28 and the feed pipe 2 37 at a high speed through the feed main pipe 38. In the feed pipe 1 28, the sulfiding agent enters the upper rotor 24 and respectively enters the three rotating rods 1 25, enters the small rotor 34 through the threaded head 32 and the rotating column 33, and then enters the curved rod 35, and is ejected through the discharge hole 36. Under the action of the recoil force of the sulfiding agent injection, the rotating column 33 and the threaded head 32 are driven to rotate, achieving the effect of rotating sulfiding agent injection, increasing the injection area, increasing the contact surface with sulfur dioxide in the flue gas, and improving the desulfurization effect. In the second feed pipe 37, the vulcanizing agent enters the lower rotor 31 through the inner rotor 30, and enters the three second rotating rods 39 respectively, then enters the small rotor 34 through the threaded head 32 and the rotating column 33, and then enters the curved rod 35 and is ejected through the discharge hole 36. Under the action of the recoil force of the vulcanizing agent injection, the rotating column 33 and the threaded head 32 are driven to rotate, achieving the effect of the vulcanizing agent rotary injection, and then achieving the upper and lower double-layer rotary injection effect. During the rising process of the flue gas, the contact area and time with the sulfur dioxide in the flue gas are increased, further improving the desulfurization effect; Start the motor 18, drive the gear 19 to rotate, drive the double gear 21 and the gear 3 29 to rotate in the same direction, set the double gear 21 and the gear 3 29 to rotate clockwise, the double gear 21 drives the gear 2 22 to rotate counterclockwise, drives the outer rotating drum 23 to rotate counterclockwise, drives the upper rotating head 24 to rotate counterclockwise, drives the three rotating rods 1 25 to rotate counterclockwise, drives the rotating spray head assembly on the rotating rod 1 25 to rotate and spray, and follows the rotating rod 1 25 to revolve counterclockwise, further enhancing the vulcanizing agent spraying effect; Gear three 29 rotates clockwise, driving the inner rotating drum 30 to rotate clockwise, driving the lower rotating head 31 to rotate clockwise, and then driving the three rotating rods 2 39 to rotate clockwise, driving the rotating nozzle assembly on the rotating rod 2 39 to rotate and spray while following the rotating rod 1 25 to revolve clockwise, forming a double-layer spraying effect of forward and reverse rotation through the upper rotating head 24 and the lower rotating head 31, increasing the coverage space of the sulfiding agent above the reaction drum 13, so that the sulfiding agent and the sulfur dioxide in the flue gas are fully in contact and reacted, thereby increasing the removal rate of sulfur dioxide in the flue gas.

[0023] Example 5 like Figures 1-17 As shown, the bag dust removal assembly includes a dust collector housing 40, a fixed frame 68 is fixed to the outside of the dust collector housing 40, an air intake adjustment assembly is slidably connected between the dust collector housing 40 and the fixed frame 68, the dust collector housing 40 is divided into a dust removal chamber 1 56 and a dust removal chamber 2 57 by a partition 55, and a fixed plate 2 60 is fixed in each of the dust removal chambers 1 56 and 57, and the fixed plate 2 60 is fixedly connected to the bag bracket 61, and the bag bracket 61 is provided with a bag 62 on its outer cover, and the dust collector A blow pipe 53 is provided in the dust collector housing 40. The blow nozzle 54 provided on the blow pipe 53 is located at the upper end of the bag bracket 61. The blow pipe 53 is connected to the air bag 51 through the electromagnetic pulse valve 52. The smoke outlets of the dust removal chamber 1 56 and the dust removal chamber 2 57 are both connected to one end of the pipe 2 63. The other end of the pipe 2 63 is connected to the fan 66. A motor 3 64 is fixed to the lower end of the dust collector housing 40. The output end of the motor 3 64 is connected to the ash discharge wheel 65, and the ash discharge wheel 65 rotates in the dust collector housing 40. The air intake adjustment assembly includes a slide plate 41, which slides between the dust collector housing 40 and the fixed frame 68. A connecting hole is provided at the center of the slide plate 41. A smoke inlet hole 1 58 and a smoke inlet hole 2 59 are provided on the side wall of the dust collector housing 40. The dust collector housing 40 is fixedly connected to the motor 2 42 through a motor bracket. The output end of the motor 2 42 is connected to the gear 43. The gear 43 is engaged with the rack 69 for transmission. The rack 69 is provided at the lower end of the slide bar 44. The slide bar 44 is slidably connected to the movable frame 46. The end of the slide bar 44 is connected to the outer side of the movable frame 46 by a spring 45. The upper end of the movable frame 46 is fixedly connected to the slide plate 41. The lower end of the movable frame 46 is provided with a dial rod 47. A switch 1 48 and a switch 2 49 are respectively provided on both sides of the dial rod 47. The switch 1 48 and the switch 2 49 are both electrically connected to the controller 50. The electromagnetic pulse valve 52 is electrically connected to the controller 50. The controller 50 is fixedly mounted on the outer side of the dust collector housing 40. The working principle of the above technical solution is as follows: start the second motor 42, drive the fourth gear 43 to rotate clockwise, drive the rack 69 to move right, drive the slide bar 44 to move right, drive the spring 45 and the movable frame 46 to move right, drive the slide plate 41 to move right, and the connecting hole at the center of the slide plate 41 is connected with the smoke inlet hole 58. The solid powder generated by the reaction is entrained by the flue gas and leaves the upper shell 12 of the desulfurization tower, and enters the dust removal chamber 56 through the pipe 15, the connecting hole at the center of the slide plate 41 and the smoke inlet hole 58. The flue gas rises from the lower end of the bag 62 in the dust removal chamber 56, and the solid powder particles in the flue gas are filtered by the bag 62. The filtered flue gas is discharged into the chimney 67 through the pipe 2 63 and the fan 66, and then discharged into the atmosphere through the chimney 67. When there is too much dust on the bag 62 in the dust removal chamber 1 56, resulting in a poor filtering effect or a reduced flue gas pass rate, resulting in an increase in air pressure, the motor 2 42 is started, driving the gear 4 43 to rotate counterclockwise, driving the rack 69 to move left, driving the slide bar 44 to move left, driving the spring 45 and the moving frame 46 to move left, driving the slide plate 41 to move left, and the connecting hole at the center of the slide plate 41 is connected to the smoke inlet hole 2 59. The solid powder generated by the reaction is entrained by the flue gas and leaves the desulfurization tower upper shell 12, and enters the dust removal chamber 2 57 through the pipe 1 15, the connecting hole at the center of the slide plate 41 and the smoke inlet hole 2 59. The flue gas rises from the lower end of the bag 62 in the dust removal chamber 2 57, and the solid powder particles in the flue gas are filtered by the bag 62 in the dust removal chamber 2 57. The filtered flue gas is discharged into the chimney 67 through the pipe 2 63 and the fan 66, and then discharged into the atmosphere through the chimney 67. When the moving frame 46 moves to the left, the lever 47 provided at the lower end of the moving frame 46 contacts the switch 1 48 and triggers the switch 1 48 to start. The switch 1 48 sends an electrical signal to the controller 50. The controller 50 controls the electromagnetic pulse valve 52 located on one side of the dust removal chamber 1 56 to start. The air bag 51, the blowing pipe 53 and the blowing nozzle 54 are used to spray air from top to bottom to the bag 62 located in the dust removal chamber 1 56. A large amount of high-speed air blows the solid powder on the bag 62 off. The solid powder falls into the ash hopper at the lower end of the dust collector housing 40, thereby completing the cleaning of the bag 62 in the dust removal chamber 1 56 without affecting the dust removal and filtration work of the flue gas in the dust removal chamber 2 57. When the solid powder accumulates to a preset amount, the motor 3 64 is started to drive the dust discharge wheel 65 to rotate and discharge the dust in the ash hopper; When there is too much dust on the bag 62 in the dust removal chamber 2 57, resulting in poor filtering effect or reduced flue gas pass rate, resulting in increased air pressure, start the motor 2 42, drive the gear 4 43 to rotate clockwise, drive the rack 69 to move right, drive the slide bar 44 to move right, drive the spring 45 and the moving frame 46 to move right, drive the slide plate 41 to move right, the connecting hole at the center of the slide plate 41 is connected to the smoke inlet 1 58, the solid powder generated by the reaction is entrained by the flue gas and leaves the desulfurization tower upper shell 12, and enters the dust removal chamber 1 56 through the pipe 15, the connecting hole at the center of the slide plate 41 and the smoke inlet 1 58, the flue gas passes through the bag 62 in the dust removal chamber 1 56 to filter the solid powder and dust, etc.; when the moving frame 46 moves to the right, the moving frame 46 moves down The lever 47 arranged at the end moves to the right and contacts the switch 2 49, triggering the switch 2 49 to start. The switch 2 49 sends an electrical signal to the controller 50. The controller 50 controls the electromagnetic pulse valve 52 corresponding to the dust removal chamber 2 57 to start, and sprays air from top to bottom to the cloth bag 62 located in the dust removal chamber 2 57 through the air bag 51, the blowing pipe 53 and the blowing nozzle 54. A large amount of high-speed air blows off the solid powder on the cloth bag 62, and the solid powder falls into the ash hopper at the lower end of the dust collector housing 40, thereby completing the cleaning of the cloth bag 62 in the dust removal chamber 1 56. The slide plate 41 moves back and forth, and the cloth bags 62 in the dust removal chamber 1 56 and the dust removal chamber 2 57 can be used alternately for dust removal. There is no need to stop the machine to wait for the cloth bags 62 to be cleaned, thereby improving work efficiency. When the edge of the slide plate 41 rests against the inner wall of the fixed frame 68, the connecting hole docks with the smoke inlet hole 1 58 or the smoke inlet hole 2 59, and the slide plate 41 and the movable frame 46 cannot continue to move. If the gear 43 cannot stop rotating, the rack 69 can continue to move to the left or right, driving the slide bar 44 to move to the left or right in the movable frame 46. The spring 45 on one side of the slide bar 44 is stretched, and the spring 45 on the other side of the slide bar 44 is compressed. The spring 45 acts as a buffer to prevent damage to the equipment caused by excessive operation.

[0024] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A semi-dry desulfurization equipment for flue gas from dry quenching section with vortex compression, characterized in that: The desulfurization tower assembly comprises a desulfurization tower assembly, wherein a rotary jet assembly is provided in the desulfurization tower assembly, one side of the desulfurization tower assembly is connected to a pre-purification assembly, the other side of the desulfurization tower assembly is connected to an air intake regulating assembly provided on a bag dust removal assembly via a pipe (15), and the bag dust removal assembly is connected to a chimney (67) via a fan (66).

2. The semi-dry desulfurization equipment for CDQ flue gas by vortex compression according to claim 1 is characterized in that: The pre-purification component comprises an air intake contraction tube (1), the air intake contraction tube (1) is connected to a diffusion tube (3) through a throat tube (2), the diffusion tube (3) is fixed to the side of the desulfurization tower component, a support tube (7) is sleeved between the air intake contraction tube (1) and the diffusion tube (3), an annular tube (5) is fixed in the support tube (7), the annular tube (5) is connected to the throat tube (2) through a plurality of water outlet tubes (6), and the annular tube (5) is communicated with the water inlet tube (4).

3. The semi-dry desulfurization equipment for CDQ flue gas by vortex compression according to claim 2 is characterized in that: The desulfurization tower assembly comprises a desulfurization tower lower shell (8), a diffusion pipe (3) fixed to the side of the desulfurization tower lower shell (8), a water pool (9) provided at the lower end of the desulfurization tower lower shell (8), a ball valve (10) provided at the bottom of the water pool (9), and a baffle (11) provided inside the desulfurization tower lower shell (8).

4. The semi-dry desulfurization equipment for flue gas from the dry quenching section by vortex compression according to claim 3 is characterized in that: The desulfurization tower lower shell (8) is fixedly connected to the desulfurization tower upper shell (12), and the desulfurization tower upper shell (12) is connected to the air intake adjustment component provided on the bag dust removal component through a pipe 1 (15). A reaction cylinder (13) is provided in the desulfurization tower upper shell (12), and the upper end of the desulfurization tower lower shell (8) is located in the reaction cylinder (13). The lower end of the reaction cylinder (13) is fixed to the connection between the desulfurization tower lower shell (8) and the desulfurization tower upper shell (12) through a support rod. A guide cylinder (14) is fixed on the top of the desulfurization tower upper shell (12), and a rotary injection component is fixed to the upper end of the desulfurization tower upper shell (12), and the lower end of the rotary injection component is located in the reaction cylinder (13).

5. The semi-dry desulfurization equipment for CDQ flue gas by vortex compression according to claim 4 is characterized in that: The rotary injection assembly includes a top cover (17), which is fixed to the upper end of the desulfurization tower upper shell (12), the top cover (17) is fixedly connected to the motor 1 (18), the output end of the motor 1 (18) is connected to the gear 1 (19), the gear 1 (19) is rotatably connected to the bracket (20) fixed on the top cover (17), the gear 1 (19) is meshed with the double gear (21) for transmission, the double gear (21) rotates between the top cover (17) and the bracket (20), the double gear (21) is meshed with the gear 2 (22) for transmission, the gear 2 (22) is fixedly connected to the upper rotor (24) through the outer rotating cylinder (23), and the outer rotating cylinder (23) is rotatably connected to the top cover (17).

6. The semi-dry desulfurization equipment for flue gas from the CDQ stage by vortex compression according to claim 5, characterized in that: The upper end of the upper rotating head (24) is rotatably connected to a cover plate (26), which is fixedly connected to the bottom of the top cover (17) through a fixing plate (27). The cover plate (26) is connected to one end of a feed pipe (28). Three rotating rods (25) are fixed to the upper rotating head (24) at equal intervals in the circumferential direction, and a plurality of rotating nozzle assemblies are linearly and equidistantly arranged on the rotating rod (25).

7. The semi-dry desulfurization equipment for CDQ flue gas by vortex compression according to claim 6, characterized in that: The gear 1 (19) is meshed with the gear 3 (29) for transmission. The gear 3 (29) is fixedly connected to the lower rotating head (31) through the inner rotating cylinder (30). The inner rotating cylinder (30) rotates in the outer rotating cylinder (23). The bracket (20) is fixedly connected to the end of the feed pipe 2 (37). One end of the feed pipe 2 (37) rotates in the gear 3 (29). The other end of the feed pipe 2 (37) and the other end of the feed pipe 1 (28) are both connected to the feed main pipe (38). Three rotating rods 2 (39) are fixed at equal intervals in the circumferential direction of the lower rotating head (31). A plurality of rotating nozzle assemblies are linearly and evenly arranged on the rotating rod 2 (39).

8. The semi-dry desulfurization equipment for CDQ flue gas by vortex compression according to claim 7, characterized in that: The rotary spray head assembly comprises a threaded head (32), the upper end of the threaded head (32) being threadedly connected to a second rotating rod (39), the lower end of the threaded head (32) being rotatably connected to a rotating column (33), a small rotating head (34) being fixed to the lower end of the rotating column (33), three curved rods (35) being fixed to the small rotating head (34) at equal intervals in the circumferential direction, and a discharge hole (36) being provided on the inner side of the end of the curved rod (35).

9. The semi-dry desulfurization equipment for flue gas from the CDQ stage by vortex compression according to claim 1, characterized in that: The bag dust removal assembly includes a dust collector housing (40), a fixed frame (68) is fixed on the outside of the dust collector housing (40), an air intake adjustment assembly is slidably connected between the dust collector housing (40) and the fixed frame (68), the dust collector housing (40) is divided into a dust removal chamber 1 (56) and a dust removal chamber 2 (57) by a partition (55), a fixed plate 2 (60) is fixed in each of the dust removal chamber 1 (56) and the dust removal chamber 2 (57), the fixed plate 2 (60) is fixedly connected to the bag bracket (61), the bag bracket (61) is provided with a bag (62) on its outer cover, and the dust collector housing ( A blowing pipe (53) is provided in the dust collector housing (40), and a blowing nozzle (54) provided on the blowing pipe (53) is located at the upper end of the bag support (61). The blowing pipe (53) is connected to the air bag (51) through an electromagnetic pulse valve (52). The smoke outlets of the dust removal chamber 1 (56) and the dust removal chamber 2 (57) are both connected to one end of the pipe 2 (63), and the other end of the pipe 2 (63) is connected to the fan (66). A motor 3 (64) is fixed to the lower end of the dust collector housing (40), and the output end of the motor 3 (64) is connected to the ash discharge wheel (65), and the ash discharge wheel (65) rotates in the dust collector housing (40).

10. The semi-dry desulfurization equipment for flue gas from the CDQ stage by vortex compression according to claim 9, characterized in that: The air intake adjustment assembly includes a slide plate (41), which slides between the dust collector housing (40) and the fixed frame (68). A connecting hole is provided at the center of the slide plate (41). A smoke inlet hole 1 (58) and a smoke inlet hole 2 (59) are provided on the side wall of the dust collector housing (40). The dust collector housing (40) is fixedly connected to the motor 2 (42) through a motor bracket. The output end of the motor 2 (42) is connected to the gear 4 (43). The gear 4 (43) is meshed with the rack (69) for transmission. The rack (69) is provided at the lower end of the slide bar (44). The slide bar (4 4) is slidably connected to the moving frame (46), the end of the slide rod (44) is connected to the outer side of the moving frame (46) through a spring (45), the upper end of the moving frame (46) is fixedly connected to the slide plate (41), the lower end of the moving frame (46) is provided with a shift rod (47), and a switch 1 (48) and a switch 2 (49) are respectively provided on both sides of the shift rod (47), the switch 1 (48) and the switch 2 (49) are both electrically connected to the controller (50), the electromagnetic pulse valve (52) is electrically connected to the controller (50), and the controller (50) is fixedly installed on the outer side of the dust collector housing (40).

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