Flue gas treatment auxiliary material adding device

Abstract

The invention relates to the technical field of flue gas treatment, in particular to a flue gas treatment auxiliary material adding device which comprises a storage bin arranged on the outer wall of the top of a reaction tower and used for storing sodium bicarbonate auxiliary materials and a feeding pipe located below the storage bin, and the lower portion of the feeding pipe penetrates through the top wall of the reaction tower. The upper portion of the feeding pipe is coaxially connected to the lower portion of the discharging pipe, a flow guide cone is arranged on the lower portion of the feeding pipe and arranged in the reaction tower, and a gap is formed between the lower end face of the feeding pipe and the flow guide face of the flow guide cone to form a nozzle. The device has the effect of increasing the mixing degree of the sodium bicarbonate auxiliary material and the smoke.

Description

Technical Field

[0001] The present application relates to the technical field of flue gas treatment, and in particular to a flue gas treatment auxiliary material dosing device. Background Art

[0002] With the increasingly stringent standards for pollutant emissions, flue gas treatment technology has developed rapidly. Flue gas desulfurization technologies include dry flue gas desulfurization, semi-dry flue gas desulfurization, and wet flue gas desulfurization.

[0003] In the dry flue gas desulfurization process, the sodium bicarbonate powder auxiliary material in the storage bin is directly sprayed into the furnace or reaction tower through a nozzle, so that the sodium bicarbonate auxiliary material and the flue gas are mixed and reacted under high temperature. The use of sodium bicarbonate dry desulfurization can not only meet the stringent requirements of environmental protection, but also effectively reduce investment and operating costs compared with other flue gas purification methods. This process can be widely used in the field of dry flue gas purification, such as coal-fired power plants, garbage or alternative fuel incineration plants.

[0004] In the prior art, sodium bicarbonate auxiliary material is usually injected into the reaction tower through the straight nozzle of the nozzle by positive pressure conveying, forming a centralized feeding operation, which causes the sodium bicarbonate auxiliary material to gather locally, resulting in poor mixing between the sodium bicarbonate auxiliary material and the flue gas, reducing the flue gas treatment efficiency, and therefore needs further improvement. Summary of the invention

[0005] In order to increase the mixing degree of sodium bicarbonate auxiliary material and flue gas and improve the flue gas treatment efficiency, the present application provides a flue gas treatment auxiliary material dosing device.

[0006] The present application provides a flue gas treatment auxiliary material dosing device that adopts the following technical solution: A flue gas treatment auxiliary material dosing device comprises a storage bin arranged on the outer wall of the top of a reaction tower and storing sodium bicarbonate auxiliary material, and a feeding pipe located below the storage bin and having its lower portion penetrated through the top wall of the reaction tower, the conical portion of the storage bin is coaxially fixedly connected with a feed pipe, the upper portion of the feeding pipe is coaxially connected to the lower portion of the feed pipe, a guide cone is arranged at the lower portion of the feeding pipe, the guide cone is internally placed in the reaction tower, and a gap is provided between the lower end surface of the feeding pipe and the guide surface of the guide cone to form a nozzle.

[0007] By adopting the above technical scheme, the sodium bicarbonate auxiliary material falls from the feed pipe and the feeding pipe to the guide surface of the guide cone in sequence, and the vertical jet of the sodium bicarbonate auxiliary material is converted into an annular diffusion flow through the guide surface of the guide cone, and dispersed feeding is carried out from the nozzle, so as to expand the coverage area of ​​the sodium bicarbonate auxiliary material in the reaction tower, improve the contact uniformity with the flue gas, thereby increasing the mixing degree of the sodium bicarbonate auxiliary material and the flue gas, and improving the flue gas treatment efficiency.

[0008] Preferably, an air inlet is provided on the outer peripheral wall of the feeding pipe, and a plurality of air inlets are provided and distributed at intervals around the axis of the feeding pipe, and the air inlet is located above the reaction tower.

[0009] By adopting the above technical solution, the sodium bicarbonate auxiliary material first falls from the feed pipe to the feeding pipe due to its own weight, and the outside air is subjected to the negative pressure of the exhaust fan at the flue gas outlet of the reaction tower. The outside air enters the feeding pipe through the air inlet, and driven by the airflow of the outside air, the sodium bicarbonate auxiliary material is accelerated to pass through the feeding pipe into the reaction tower to mix with the flue gas for reaction.

[0010] Preferably, the air inlet is arranged in a strip shape, the length direction of the air inlet is parallel to the axial direction of the feeding pipe, the feeding pipe is provided with an air regulating baffle sleeve along the axial sliding sleeve for adjusting the air intake amount, and the feeding pipe is provided with an adjusting component for adjusting the sliding position of the air regulating baffle sleeve.

[0011] By adopting the above technical solution, the air inlet is arranged in a strip shape and the length direction is parallel to the axial direction of the feeding pipe, which can increase the air intake area and ensure that the air flow enters the feeding pipe stably. The air regulating baffle sleeve slides along the axial direction of the feeding pipe to flexibly adjust the opening range of the air inlet, thereby accurately controlling the air intake volume.

[0012] Preferably, the guide surface of the guide cone is provided with material holes along the axial direction, and the material holes are evenly distributed on the guide cone.

[0013] By adopting the above technical solution, the material holes on the guide cone can further improve the dispersibility of the sodium bicarbonate auxiliary material. After the auxiliary material is sprayed out from the nozzle, part of the auxiliary material will pass through the material holes to form an additional diffusion path, thereby breaking the single annular diffusion mode, making the auxiliary material distribution more uniform, and reducing the possibility of a blind area in the lower part of the guide cone.

[0014] Preferably, the feeding pipe is coaxially rotatably connected to the feeding pipe, the feeding pipe is rotatably penetrated through the top wall of the reaction tower, the guide cone is coaxially fixedly connected to the feeding pipe, and the storage bin is provided with a rotating mechanism for driving the feeding pipe to rotate.

[0015] By adopting the above technical solution, the feeding pipe is coaxially connected to the feeding pipe, and the feeding pipe is driven to rotate by the rotating mechanism set in the storage bin, so that the guide cone rotates synchronously with the feeding pipe, realizing the rotating distribution of the guide cone. This design enables the sodium bicarbonate auxiliary material to not only realize annular diffusion flow under the action of the guide surface of the guide cone, but also further expand the coverage area during the rotation process, enhance the contact uniformity with the flue gas, and reduce the bridging problem caused by static friction of the auxiliary material. In addition, by adjusting the rotation speed of the feeding pipe, the powder diffusion radius can be flexibly controlled to meet the reaction space requirements under different working conditions.

[0016] Preferably, the rotating mechanism includes an upper support frame fixedly connected to the upper inner wall of the feeding tube, a rotating shaft fixedly connected to the upper support frame and extending to the inner cavity of the storage bin, and a rotating motor fixedly connected to the top outer wall of the storage bin. The upper support frame is a hollow frame, the rotating shaft and the feeding tube are coaxial, the output shaft of the rotating motor is penetrated through the top wall of the storage bin and is coaxially fixedly connected to the upper part of the rotating shaft, and the outer peripheral wall of the rotating shaft is provided with an arch breaking rod built into the storage bin.

[0017] By adopting the above technical solution, the upper support frame is a hollow frame, which not only ensures the structural strength but also does not hinder the auxiliary materials from falling; the rotating shaft is coaxially connected with the feeding pipe to ensure the stability during the rotation process; the rotating motor drives the rotating shaft to rotate, thereby driving the feeding pipe and the guide cone to rotate synchronously to achieve uniform dispersion of the sodium bicarbonate auxiliary material. In addition, the rotating shaft drives the arch breaking rod to rotate during the rotation process. The setting of the arch breaking rod effectively prevents the auxiliary material arch bridge phenomenon in the storage bin, ensuring the continuous and stable supply of auxiliary materials.

[0018] Preferably, the lower inner wall of the feeding tube is fixedly connected to a lower support frame, and the lower support frame is a hollow frame. The lower end of the lower support frame is fixedly connected to a fixing rod, and the fixing rod and the feeding tube are coaxial. The guide cone is coaxially fixedly connected to the lower end of the fixing rod. The outer diameter of the lower end of the guide cone is larger than the outer diameter of the feeding tube. The lower outer peripheral wall of the feeding tube is fixedly connected to a connecting plate. There are multiple connecting plates and they are distributed around the axis of the feeding tube. The connecting plate is vertically slidable and is provided with a hammering rod for hammering and vibrating the guide surface of the guide cone. The feeding tube is provided with a hammering drive assembly for driving the hammering rod to slide back and forth.

[0019] By adopting the above technical solution, the lower support frame is designed as a hollow frame, which can effectively reduce the residue of sodium bicarbonate auxiliary material in the feeding pipe, and the coaxial connection between the fixed rod and the guide cone ensures the structural stability. By beating and vibrating the guide surface of the guide cone with the beating rod, the possibility of sodium bicarbonate auxiliary material accumulation on the guide surface or clogging of the material hole can be prevented, thereby ensuring the smooth flow and uniform dispersion of the auxiliary material, improving the operating reliability of the device, and reducing the need for manual maintenance.

[0020] Preferably, the beating drive assembly includes a mounting ring plate fixedly connected to the top inner wall of the reaction tower, a magnetic block fixedly connected to the upper end of the beating rod and located between the connecting plate and the mounting ring plate, a first magnetic plate and a second magnetic plate fixedly connected to the lower end surface of the mounting ring plate, a feeding pipe is coaxially passed through the mounting ring plate, a plurality of the first magnetic plate and the second magnetic plate are provided and distributed around the axis of the mounting ring plate, and the first magnetic plate and the second magnetic plate are staggered on the mounting ring plate, the first magnetic plate and the magnetic block are attracted to each other by opposite charges, and the second magnetic plate and the magnetic block are repelled by the same charges.

[0021] By adopting the above technical solution, during the rotation of the feeding tube, the beating rod and the magnetic block are driven to rotate and change position together. The magnetic block realizes automatic reciprocating motion under the alternating action of the first magnetic plate and the second magnetic plate. The beating rod can be driven to perform hammering and vibrating operations on the guide surface of the guide cone without the need for an additional power source. The simple magnetic principle is used to realize automatic operation, simplifying the device structure and reducing maintenance costs.

[0022] Preferably, the lower end surface of the connecting plate is fixedly connected to an air box, the lower part of the hammering rod is penetrated through the lower end surface of the air box, the hammering rod is fixedly connected to a piston plate which is slidingly sealed and connected to the inner wall of the air box, the piston plate divides the inner cavity of the air box into a first air cavity and a second air cavity, the first air cavity is located above the second air cavity, the connecting plate is fixedly penetrated with a first one-way air inlet pipe and a first one-way air outlet pipe which are connected to the first air cavity, the first one-way air inlet pipe and the first one-way air outlet pipe are both provided with one-way valves, a filter end cap is provided at the end of the first one-way air inlet pipe, the first one-way air outlet pipe is penetrated through the lower side wall of the feeding pipe, the connecting port of the first one-way air outlet pipe and the feeding pipe is located above the lower support frame to blow off the auxiliary material remaining on the support frame.

[0023] By adopting the above technical solution, when the beating rod reciprocates, the piston plate slides up and down in the air box, so that the first air cavity and the second air cavity alternately generate negative pressure and positive pressure. The first air cavity inhales gas through the first one-way air inlet pipe under the action of negative pressure, and discharges gas through the first one-way air outlet pipe under the action of positive pressure. The gas is ejected from the first one-way air outlet pipe to form a directional airflow, which effectively removes the sodium bicarbonate auxiliary material remaining on the lower support frame and reduces the auxiliary material residue.

[0024] Preferably, a second one-way air inlet pipe and a second one-way air outlet pipe connected to the second air cavity are fixedly penetrated on the lower end surface of the air box, the second one-way air inlet pipe and the second one-way air outlet pipe are both provided with one-way valves, a filter end cap is provided at the end of the second one-way air inlet pipe, the lower side wall of the feeding pipe has a clearing cavity, the lower end surface of the feeding pipe is provided with an air outlet hole connected to the clearing cavity, and the second one-way air outlet pipe is connected to the clearing cavity.

[0025] By adopting the above technical solution, when the beating rod reciprocates, the piston plate slides up and down in the air box, so that the first air cavity and the second air cavity generate negative pressure and positive pressure alternately. The second air cavity inhales gas through the second one-way air inlet pipe under the action of negative pressure, and discharges gas through the second one-way air outlet pipe under the action of positive pressure. The gas enters the clearing cavity and is ejected from the air outlet, which can effectively impact the auxiliary materials near the nozzle and avoid the accumulation of auxiliary materials at the nozzle. At the same time, the ejected gas will be able to blow off the auxiliary materials blocking the material hole, reducing the probability of blockage of the material hole.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The sodium bicarbonate auxiliary material falls from the feed pipe and the feed pipe to the guide surface of the guide cone in turn. The vertical jet of the sodium bicarbonate auxiliary material is converted into an annular diffusion flow through the guide surface of the guide cone, and the material is added in a dispersed manner from the nozzle to expand the coverage area of ​​the sodium bicarbonate auxiliary material in the reaction tower, improve the contact uniformity with the flue gas, thereby increasing the mixing degree of the sodium bicarbonate auxiliary material and the flue gas, and improving the flue gas treatment efficiency; 2. The holes on the guide cone can further improve the dispersibility of the sodium bicarbonate auxiliary material. After the auxiliary material is sprayed out from the nozzle, part of the auxiliary material will pass through the holes to form an additional diffusion path, thereby breaking the single annular diffusion mode, making the auxiliary material distribution more uniform, and reducing the possibility of blind spots in the lower part of the guide cone; 3. The feeding pipe is connected to the feeding pipe through coaxial rotation, and the rotating mechanism set in the storage bin drives the feeding pipe to rotate, so that the guide cone rotates synchronously with the feeding pipe, realizing the rotating distribution of the guide cone. This design enables the sodium bicarbonate auxiliary material to not only realize annular diffusion flow under the action of the guide surface of the guide cone, but also further expand the coverage area during the rotation process, enhance the contact uniformity with the flue gas, and reduce the bridging problem caused by static friction of the auxiliary material. In addition, the powder diffusion radius can be flexibly controlled by adjusting the rotation speed of the feeding pipe to meet the reaction space requirements under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a flue gas treatment auxiliary material dosing device in Example 1.

[0028] Figure 2 It is a schematic diagram of the structure of the adjustment component in Example 1.

[0029] Figure 3 It is a structural schematic diagram of the lower support frame in Example 1.

[0030] Figure 4 It is a structural schematic diagram of the rotating mechanism in Example 2.

[0031] Figure 5 It is a structural schematic diagram of the hammering drive assembly in Example 2.

[0032] Figure 6 It is a structural schematic diagram of the lower part of the feeding tube in Example 2.

[0033] Figure 7 Schematic diagram of the structure of the drum in Example 3.

[0034] Figure 8 It is a structural schematic diagram of the guide groove in Example 3.

[0035] Description of the accompanying drawings: 10, reaction tower; 1, storage bin; 11, feed pipe; 12, feed valve; 121, movable sealing plate; 122, feed cylinder; 2, feeding pipe; 21, limit flange; 22, air inlet; 23, air regulating stopper sleeve; 24, lower support frame; 241, support cylinder; 242, center plate; 243, support rod; 244, fixed rod; 25, connecting plate; 26, hammer rod; 261, guide rod; 27, clearing cavity; 28, air outlet; 29, rotating drum; 291, annular cavity; 292, first guide groove; 293, second guide groove; 3, guide cone; 31 , material hole; 4, adjustment component; 41, fixed ring plate; 42, ear plate; 43, screw; 44, nut; 5, rotating mechanism; 51, upper support frame; 52, rotating shaft; 54, arch breaking rod; 6, hammering drive component; 61, mounting ring plate; 62, magnetic block; 63, first magnetic plate; 64, second magnetic plate; 65, cleaning plate; 66, brush; 7, air box; 71, piston plate; 72, first air cavity; 73, second air cavity; 74, first one-way air inlet pipe; 75, first one-way air outlet pipe; 76, second one-way air inlet pipe; 77, second one-way air outlet pipe; 78, filter end cover. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1 -Attached Figure 8 This application is described in further detail.

[0037] Embodiment 1: The present application discloses a flue gas treatment auxiliary material dosing device, referring to Figure 1 , including a storage bin 1 fixedly connected to the top outer wall of a reaction tower 10 by a bracket and storing sodium bicarbonate auxiliary material, and a feeding pipe 2 located below the storage bin 1 and having its lower portion penetrated through the top wall of the reaction tower 10. A discharge pipe 11 is coaxially fixedly connected to the conical portion of the storage bin 1, and the discharge pipe 11 is provided with a discharge valve 12 for controlling the opening and closing of the inner cavity. In this embodiment, the discharge valve 12 is a ball valve. A breathing valve is provided on the top wall of the storage bin 1 to balance the internal and external pressures of the storage bin 1 and ensure smooth discharge of the storage bin 1.

[0038] The upper part of the feeding pipe 2 is coaxially connected to the lower part of the feeding pipe 11. In this embodiment, the lower end of the feeding pipe 11 and the upper end face of the feeding pipe 2 are fixedly connected by a flange. The feeding pipe 2 is coaxially fixedly connected with a limiting flange 21. The lower end face of the limiting flange 21 abuts against the upper end face of the reaction tower 10. The limiting flange 21 is bolted to the top wall of the reaction tower 10. The outer peripheral wall of the feeding pipe 2 is provided with an air inlet 22. The air inlet 22 is provided in multiple numbers and is spaced apart around the axis of the feeding pipe 2. The air inlet 22 is located above the reaction tower 10. The air inlet 22 is arranged in a strip shape, and the length direction of the air inlet 22 is parallel to the axial direction of the feeding pipe 2.

[0039] Reference Figure 1 , Figure 2 The feeding pipe 2 is provided with an air-adjusting stopper sleeve 23 for adjusting the air intake along the axial sliding sleeve, and the feeding pipe 2 is provided with an adjusting assembly 4 for adjusting the sliding position of the air-adjusting stopper sleeve 23, and the adjusting assembly 4 includes a fixed ring plate 41 fixedly connected to the feeding pipe 2 and located below the air-adjusting stopper sleeve 23, an ear plate 42 fixedly connected to the outer wall of the air-adjusting stopper sleeve 23, a screw 43 fixedly connected to the fixed ring plate 41 and penetrated through the ear plate 42, and a nut 44 threadedly connected to the screw 43 and abutting against the lower end surface of the ear plate 42. The height adjustment of the nut 44 is achieved by rotating the nut 44, and the nut 44 supports the ear plate 42, thereby achieving the height adjustment of the air-adjusting stopper sleeve 23, and then flexibly adjusting the opening range of the air inlet 22, so as to accurately control the air intake.

[0040] Reference Figure 3 The lower inner wall of the feeding tube 2 is fixedly connected with a lower support frame 24, which is a hollow frame. The lower support frame 24 includes a support tube 241 coaxially built into the feeding tube 2, a center plate 242 coaxially built into the support tube 241, and a support rod 243 fixedly connected to the outer wall of the center plate 242 and the inner wall of the support tube 241. A plurality of support rods 243 are provided and are evenly distributed around the axis of the center plate 242. The outer peripheral wall of the support tube 241 abuts against the inner peripheral wall of the feeding tube 2, and the support tube 241 is locked to the feeding tube 2 by bolts.

[0041] The lower end of the center plate 242 is coaxially fixedly connected with a fixing rod 244, and the lower end of the fixing rod 244 is coaxially fixedly connected with a guide cone 3. The guide cone 3 is built into the reaction tower 10, and the lower end of the guide cone 3 is a large end, and the outer diameter of the lower end of the guide cone 3 is larger than the outer diameter of the feeding pipe 2. The outer peripheral wall of the guide cone 3 is a guide surface, and there is a gap between the lower end surface of the feeding pipe 2 and the guide surface of the guide cone 3 to form a nozzle. The guide surface of the guide cone 3 is axially penetrated with material holes 31, and the material holes 31 are evenly distributed on the guide cone 3.

[0042] The implementation principle of the flue gas treatment auxiliary material dosing device of the embodiment of the present application is as follows: when working, the discharge valve 12 is in an open state, and the sodium bicarbonate auxiliary material first falls from the discharge pipe 11 to the feeding pipe 2 due to its own weight, and the outside air is subjected to the negative pressure of the exhaust fan at the flue gas outlet of the reaction tower 10. The outside air enters the feeding pipe 2 through the air inlet 22, and the sodium bicarbonate auxiliary material is accelerated through the feeding pipe 2 by the airflow of the outside air. The falling sodium bicarbonate auxiliary material converts the vertical jet into annular diffusion flow through the guide surface of the guide cone 3, and is dispersedly fed from the nozzle, thereby expanding the coverage area of ​​the sodium bicarbonate auxiliary material in the reaction tower 10, and part of the sodium bicarbonate auxiliary material will fall vertically through the material hole 31 to form an additional diffusion path, thereby breaking the single annular diffusion mode, making the auxiliary material distribution more uniform, and reducing the possibility of a blind area of ​​material distribution under the guide cone 3.

[0043] Embodiment 2: The difference between this embodiment and embodiment 1 is that, referring to Figure 4 , the feeding pipe 2 is coaxially rotatably connected to the feeding pipe 11, the feeding pipe 2 is rotatably penetrated through the top wall of the reaction tower 10, and the storage bin 1 is provided with a rotating mechanism 5 for driving the feeding pipe 2 to rotate. The rotating mechanism 5 includes an upper support frame 51 fixedly connected to the upper inner wall of the feeding pipe 2, a rotating shaft 52 fixedly connected to the upper support frame 51 and extending in the inner cavity of the storage bin 1, and a rotating motor fixedly connected to the outer wall of the top of the storage bin 1. The upper support frame 51 is a hollow frame, and the structure of the upper support frame 51 and the lower support frame 24 are the same, which will not be repeated here. The rotating shaft 52 is coaxial with the feeding pipe 2, and the rotating motor is a variable speed motor. The output shaft of the rotating motor is penetrated through the top wall of the storage bin 1 and is coaxially fixedly connected to the upper part of the rotating shaft 52. The outer peripheral wall of the rotating shaft 52 is provided with an arch breaking rod 54 built into the storage bin 1, and the arch breaking rod 54 is provided with a plurality of arch breaking rods 54 and distributed along the axial direction of the rotating shaft 52.

[0044] The unloading valve 12 includes a pair of movable sealing plates 121 that slide radially through the unloading pipe 11 and an unloading cylinder 122 that drives the movable sealing plates 121 to slide. The two movable sealing plates 121 are symmetrically arranged along the axis of the unloading pipe 11. The two movable sealing plates 121 are provided with an avoidance groove for the rotating shaft 52 to pass through on one side close to each other, and the avoidance groove is semicircular. The cylinder body of the unloading cylinder 122 is fixedly connected to the outer wall of the unloading pipe 11, and the piston rod of the unloading cylinder 122 is fixedly connected to the movable sealing plate 121. When the piston rod of the unloading cylinder 122 is extended, the two movable sealing plates 121 slide toward each other, and the movable sealing plates 121 abut against each other to achieve the closure of the unloading pipe 11. When the piston rod of the unloading cylinder 122 is retracted, the two movable sealing plates 121 slide toward the direction of moving away from each other, and the unloading pipe 11 is connected to achieve the unloading operation.

[0045] Reference Figure 5 , Figure 6The lower outer wall of the feeding pipe 2 is fixedly connected with a connecting plate 25 built into the reaction tower 10. The connecting plates 25 are provided with multiple ones and distributed around the axis of the feeding pipe 2. The connecting plates 25 are vertically slidable and penetrated by a beating rod 26 for beating and vibrating the guide surface of the guide cone 3. The feeding pipe 2 is provided with a beating drive assembly 6 that drives the beating rod 26 to slide back and forth, the beating drive assembly 6 comprises a mounting ring plate 61 fixedly connected to the top inner wall of the reaction tower 10 by a support rod, a magnetic block 62 fixedly connected to the upper end of the beating rod 26 and positioned between the connecting plate 25 and the mounting ring plate 61, a first magnetic plate 63 and a second magnetic plate 64 fixedly connected to the lower end surface of the mounting ring plate 61 and positioned above the magnetic block 62, the feeding pipe 2 is coaxially penetrated in the mounting ring plate 61, the first magnetic plate 63 and the second magnetic plate 64 are both provided with a plurality of and distributed around the axis of the mounting ring plate 61, and the first magnetic plate 63 and the second magnetic plate 64 are staggeredly distributed in the mounting ring plate 61, the first magnetic plate 63 and the magnetic block 62 are attracted to each other by opposite sex, and the second magnetic plate 64 and the magnetic block 62 are repelled by the same sex. In other embodiments, the beating drive assembly 6 can adopt a cylinder to drive the beating rod 26 to slide.

[0046] The lower end surface of the connecting plate 25 is fixedly connected with the air box 7, the lower part of the beating rod 26 is penetrated through the lower end surface of the air box 7, the beating rod 26 is fixedly connected with a piston plate 71 which is connected to the inner wall of the air box 7 by sliding sealing, the piston plate 71 divides the inner cavity of the air box 7 into a first air cavity 72 and a second air cavity 73, the first air cavity 72 is located above the second air cavity 73. The connecting plate 25 is fixedly penetrated with a first one-way air inlet pipe 74 and a first one-way air outlet pipe 75 which are connected to the first air cavity 72, both of which are provided with one-way valves, the first one-way air outlet pipe 75 is penetrated through the lower side wall of the feeding pipe 2, and the connection port of the first one-way air outlet pipe 75 and the feeding pipe 2 is located above the lower support frame 24 to blow off the auxiliary materials remaining on the support frame. The lower end surface of the air box 7 is fixedly penetrated with a second one-way air inlet pipe 76 and a second one-way air outlet pipe 77 connected to the second air cavity 73, and both the second one-way air inlet pipe 76 and the second one-way air outlet pipe 77 are provided with a one-way valve. The lower side wall of the feeding pipe 2 has a clearing cavity 27, and the lower end surface of the feeding pipe 2 is provided with an air outlet hole 28 connected to the clearing cavity 27. The air outlet holes 28 are provided in plurality and distributed around the axis of the feeding pipe 2, and the second one-way air outlet pipe 77 is connected to the clearing cavity 27.

[0047] The ends of the first one-way air inlet pipe 74 and the second one-way air inlet pipe 76 are both fixed with filter end covers 78, and the end faces of the filter end covers 78 have filter screens. The filter end covers 78 on the first one-way air inlet pipe 74 and the second one-way air inlet pipe 76 are in the same vertical plane, and the outer wall of the mounting ring plate 61 is fixedly connected with a cleaning plate 65, and the cleaning plate 65 is fixedly connected with a brush 66 for the filter screen to abut against. During the rotation of the feeding pipe 2, the air box 7 is driven to rotate as a whole. When the filter screen of the filter end cover 78 touches the brush 66, the brush 66 can scrape off the auxiliary materials adhering to the filter screen of the filter end cover 78.

[0048] The implementation principle of Example 2 is as follows: the rotating motor starts to drive the rotating shaft 52 to rotate, and drives the feeding pipe 2 and the guide cone 3 to rotate together through the upper support frame 51, so as to realize the rotating distribution of the guide cone 3, so that the sodium bicarbonate auxiliary material can not only realize annular diffusion flow under the action of the guide surface of the guide cone 3, but also further expand the coverage area during the rotation process, enhance the contact uniformity with the flue gas, and reduce the possibility of bridging of the auxiliary material due to static friction; the rotating shaft 52 drives the arch breaking rod 54 to rotate during the rotation process, and the arch breaking rod 54 effectively prevents the auxiliary material arch bridge phenomenon from occurring in the storage bin 1, thereby ensuring the continuous and stable supply of the auxiliary material.

[0049] During the rotation of the feeding tube 2, on the one hand, the support rod 243 rotates together with the feeding tube 2, and the support rod 243 applies a shear force to the sodium bicarbonate powder to break up the electrostatic adsorption between the sodium bicarbonate powder particles. On the other hand, the rotation of the feeding tube 2 drives the beating rod 26 and the magnetic block 62 to rotate and change position together. The magnetic block 62 realizes automatic lifting and reciprocating motion under the alternating action of the first magnetic plate 63 and the second magnetic plate 64, thereby driving the beating rod 26 to beat and vibrate the guide surface of the guide cone 3, which can prevent the sodium bicarbonate auxiliary material from accumulating on the guide surface or the material hole 31 from being blocked, thereby ensuring the smooth flow and uniform dispersion of the auxiliary material.

[0050] During the reciprocating movement of the beating rod 26, the beating rod 26 drives the piston plate 71 to slide relative to the air box 7, so that the first air cavity 72 and the second air cavity 73 alternately generate negative pressure and positive pressure. The first air cavity 72 inhales gas through the first one-way air inlet pipe 74 under the action of negative pressure, and discharges gas through the first one-way air outlet pipe 75 under the action of positive pressure. The gas is ejected from the first one-way air outlet pipe 75 to form a directional airflow, effectively removing the sodium bicarbonate auxiliary material remaining on the lower support frame 24 and reducing the residual auxiliary material; the second air cavity 73 inhales gas through the second one-way air inlet pipe 76 under the action of negative pressure, and discharges gas through the second one-way air outlet pipe 77 under the action of positive pressure. The gas enters the clearing cavity 27 and is ejected from the air outlet 28, which can effectively impact the auxiliary material near the nozzle, avoiding the accumulation of auxiliary material at the nozzle, and the ejected gas will be able to blow off the auxiliary material blocked in the material hole 31, reducing the probability of the material hole 31 being blocked.

[0051] Embodiment 3: The difference from Example 2 is that, referring to Figure 7 , Figure 8 The lower part of the feeding pipe 2 is coaxially connected with a rotating drum 29, and the lower inner peripheral wall of the rotating drum 29 has an annular cavity 291 connected to the clearing cavity 27. In this embodiment, the air outlet 28 is provided on the lower end surface of the rotating drum 29, and the air outlet 28 is connected to the annular cavity 291. The lower outer wall of one of the hammering rods 26 is fixedly connected with a guide rod 261 located below the air box 7, and the axial direction of the guide rod 261 is parallel to the radial direction of the hammering rod 26. The outer peripheral wall of the rotating drum 29 is provided with guide grooves that are continuously distributed for the end of the guide rod 261 to slide and connect, and the guide grooves include a first guide groove 292 and a second guide groove 293 whose end is connected to the first guide groove 292. The first guide groove 292 and the second guide groove 293 are provided with a plurality of them and are staggered. The first guide groove 292 and the second guide groove 293 are both inclined, and the inclination directions of the first guide groove 292 and the second guide groove 293 are opposite.

[0052] When the beating rod 26 slides downward and drives the guide rod 261 to move downward, the end of the guide rod 261 abuts against the lower inner wall of the second guide groove 293, thereby forcing the rotating drum 29 to rotate forwardly around its own axis relative to the feeding tube 2. When the beating rod 26 moves to the lowest point, the end of the guide rod 261 slides into the lower end of the first guide groove 292. When the beating rod 26 slides upward and drives the guide rod 261 to move upward, the end of the guide rod 261 abuts against the upper inner wall of the first guide groove 292, thereby forcing the rotating drum 29 to continue to rotate forwardly around its own axis relative to the feeding tube 2. When the beating rod 26 slides to the highest point, the guide rod 261 slides into the upper end of the second guide groove 293, and continues to reciprocate to achieve continuous rotation of the rotating drum 29, thereby changing the position of the air outlet 28 and performing jetting operations on the material holes 31 at different positions of the guide cone 3.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flue gas treatment auxiliary material dosing device, characterized in that: The invention comprises a storage bin (1) arranged on the outer wall of the top of a reaction tower (10) and storing a sodium bicarbonate auxiliary material, and a feeding pipe (2) located below the storage bin (1) and having its lower portion penetrated through the top wall of the reaction tower (10), wherein a conical portion of the storage bin (1) is coaxially fixedly connected to a feeding pipe (11), an upper portion of the feeding pipe (2) is coaxially connected to a lower portion of the feeding pipe (11), a flow guide cone (3) is arranged at the lower portion of the feeding pipe (2), the flow guide cone (3) is built into the reaction tower (10), and a lower end of the feeding pipe (2) is fixedly connected to the lower portion of the feeding pipe (11). A gap is provided between the guide surface and the guide surface of the guide cone (3) to form a nozzle; the guide surface of the guide cone (3) is axially penetrated with material holes (31), and the material holes (31) are evenly distributed on the guide cone (3); the feeding pipe (2) is coaxially rotatably connected to the feeding pipe (11), the feeding pipe (2) is rotatably penetrated through the top wall of the reaction tower (10), the guide cone (3) is coaxially fixedly connected to the feeding pipe (2), and the storage bin (1) is provided with a rotating mechanism (5) for driving the feeding pipe (2) to rotate.

2. The flue gas treatment auxiliary material dosing device according to claim 1, characterized in that: An air inlet (22) is provided on the outer peripheral wall of the feeding pipe (2), a plurality of air inlets (22) are provided and are spaced apart around the axis of the feeding pipe (2), and the air inlet (22) is located above the reaction tower (10).

3. The flue gas treatment auxiliary material dosing device according to claim 2, characterized in that: The air inlet (22) is arranged in a strip shape, the length direction of the air inlet (22) is parallel to the axial direction of the feeding pipe (2), the feeding pipe (2) is provided with an air regulating baffle sleeve (23) for regulating the air intake amount along the axial sliding sleeve, and the feeding pipe (2) is provided with an adjusting component (4) for adjusting the sliding position of the air regulating baffle sleeve (23).

4. The flue gas treatment auxiliary material dosing device according to claim 1, characterized in that: The rotating mechanism (5) comprises an upper support frame (51) fixedly connected to the upper inner wall of the feeding tube (2), a rotating shaft (52) fixedly connected to the upper support frame (51) and extending into the inner cavity of the storage bin (1), and a rotating motor fixedly connected to the top outer wall of the storage bin (1); the upper support frame (51) is a hollow frame; the rotating shaft (52) and the feeding tube (2) are coaxial; the output shaft of the rotating motor is passed through the top wall of the storage bin (1) and is coaxially fixedly connected to the upper part of the rotating shaft (52); and the outer peripheral wall of the rotating shaft (52) is provided with an arch-breaking rod (54) built into the storage bin (1).

5. The flue gas treatment auxiliary material dosing device according to claim 1, characterized in that: The lower inner wall of the feeding pipe (2) is fixedly connected to a lower support frame (24), the lower support frame (24) is a hollow frame, the lower end of the lower support frame (24) is fixedly connected to a fixing rod (244), the fixing rod (244) and the feeding pipe (2) are coaxial, the guide cone (3) is coaxially fixedly connected to the lower end of the fixing rod (244), the outer diameter of the lower end of the guide cone (3) is larger than the outer diameter of the feeding pipe (2), the lower peripheral wall of the feeding pipe (2) is fixedly connected to a connecting plate (25), a plurality of connecting plates (25) are provided and distributed around the axis of the feeding pipe (2), the connecting plate (25) is vertically slidably penetrated by a beating rod (26) for beating and vibrating the guide surface of the guide cone (3), and the feeding pipe (2) is provided with a beating drive assembly (6) for driving the beating rod (26) to slide back and forth.

6. The device for adding auxiliary materials for flue gas treatment according to claim 5, characterized in that: The hammering drive assembly (6) comprises a mounting ring plate (61) fixedly connected to the top inner wall of the reaction tower (10), a magnetic block (62) fixedly connected to the upper end of the hammering rod (26) and located between the connecting plate (25) and the mounting ring plate (61), a first magnetic plate (63) and a second magnetic plate (64) fixedly connected to the lower end surface of the mounting ring plate (61), a feeding pipe (2) coaxially penetrates the mounting ring plate (61), a plurality of the first magnetic plates (63) and the second magnetic plates (64) are provided and distributed around the axis of the mounting ring plate (61), and the first magnetic plates (63) and the second magnetic plates (64) are staggeredly distributed on the mounting ring plate (61), the first magnetic plate (63) and the magnetic block (62) are attracted to each other by opposite charges, and the second magnetic plate (64) and the magnetic block (62) are repelled by the same charges.

7. The device for adding auxiliary materials for flue gas treatment according to claim 5, characterized in that: The lower end surface of the connecting plate (25) is fixedly connected to the air box (7), the lower part of the hammer rod (26) penetrates the lower end surface of the air box (7), the hammer rod (26) is fixedly connected to a piston plate (71) connected to the inner wall of the air box (7) in a sliding seal, the piston plate (71) divides the inner cavity of the air box (7) into a first air cavity (72) and a second air cavity (73), the first air cavity (72) is located above the second air cavity (73), the connecting plate (25) is fixedly penetrated with a piston plate (71) connected to the first air cavity (72) and the second air cavity (73). The first one-way air inlet pipe (74) and the first one-way air outlet pipe (75) are provided with a one-way valve, and the end of the first one-way air inlet pipe (74) is provided with a filter end cap (78). The first one-way air outlet pipe (75) is passed through the lower side wall of the feeding pipe (2), and the connection port between the first one-way air outlet pipe (75) and the feeding pipe (2) is located above the lower support frame (24) so ​​as to blow off the auxiliary material remaining on the support frame.

8. The device for adding auxiliary materials for flue gas treatment according to claim 7, characterized in that: A second one-way air inlet pipe (76) and a second one-way air outlet pipe (77) connected to the second air cavity (73) are fixedly penetrated through the lower end surface of the air box (7); both the second one-way air inlet pipe (76) and the second one-way air outlet pipe (77) are provided with one-way valves; a filter end cap (78) is provided at the end of the second one-way air inlet pipe (76); a clearing cavity (27) is provided on the lower side wall of the feeding pipe (2); an air outlet hole (28) connected to the clearing cavity (27) is provided on the lower end surface of the feeding pipe (2); and the second one-way air outlet pipe (77) is connected to the clearing cavity (27).

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