A flue gas treatment device for a heat boiler

Abstract

The application discloses a heat supply boiler flue gas treatment device and relates to the technical field of flue gas treatment. The device comprises a desulfurization tower, the inner bottom of the desulfurization tower is provided with a porous air outlet assembly for air inlet, a plurality of spraying assemblies for spraying liquid medicine are arranged in the desulfurization tower from top to bottom, the lower surface of each spraying assembly is outwardly convex and conical at the liquid medicine spraying position, a plurality of air passing openings are formed in each spraying assembly, and an air outlet pipe is arranged at the top of the desulfurization tower. The flue gas entering the desulfurization tower is uniformly dispersed by the porous air outlet assembly, the dispersed flue gas moves upwards through the air passing openings on the spraying assemblies in sequence, and the flue gas is washed by the spraying assemblies to be treated, so that the flue gas is fully treated. The flue gas can be further guided and dispersed when passing through the conical convex surface, the effective contact area of the flue gas and the liquid medicine is enlarged, the flue gas can be fully contacted with the liquid medicine, and the treatment effect of the flue gas is further improved.

Description

Technical Field

[0001] This invention relates to the field of flue gas treatment technology, and more specifically to a flue gas treatment device for heating boilers. Background Technology

[0002] A heating boiler is an energy conversion device. The energy input to the boiler includes the chemical energy of the fuel and electrical energy. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of heat energy. The combustion of the boiler inevitably produces a large amount of flue gas rich in sulfur oxides. Therefore, it is necessary to treat the flue gas produced by the boiler combustion. Among them, flue gas desulfurization technology is one of the key measures to reduce sulfur dioxide (SO2) emissions from coal-fired boilers.

[0003] Currently, desulfurization and dust removal towers are generally used to purify flue gas. Through specific chemical reactions and physical filtration processes, harmful substances in the flue gas are effectively removed. An invention patent with publication number CN119838405A discloses a flue gas desulfurization device for boilers in heating plants. Through the design of the air distribution component and the uniform spray unit, the flue gas can be evenly distributed inside the desulfurization tower and fully mixed and reacted with the alkaline solution, thereby achieving a highly efficient desulfurization effect. The air distribution component uses the rotation of the blades to generate a negative pressure effect, which attracts and disperses the flue gas entering the desulfurization tower, ensuring the uniform distribution of the flue gas inside the desulfurization tower. This avoids the problem of excessive concentration or uneven distribution of flue gas in a certain area.

[0004] However, this invention patent still has the following problems: When the flue gas is sprayed in the desulfurization tower, the flue gas distribution is adjusted by the gas distribution component. However, the space occupied by the gas distribution component is relatively small compared to the whole device. It can only guide the flue gas to diffuse in the direction of the blades. It cannot guide the flue gas in the area of ​​the angle between two adjacent blades. Moreover, the further away from the blade, the weaker the guiding effect. The closer to the blade, the faster the flue gas flow rate, which affects the treatment effect of the flue gas. Summary of the Invention

[0005] The purpose of this invention is to provide a flue gas treatment device for heating boilers, which solves the technical problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0007] A flue gas treatment device for a heating boiler includes a desulfurization tower. A porous air outlet assembly for air intake is provided at the bottom of the desulfurization tower, and the porous air outlet assembly evenly outlets air around the vertical center line of the desulfurization tower. Multiple spraying assemblies for spraying chemical solutions are arranged from top to bottom inside the desulfurization tower, and the multiple spraying assemblies are staggered. The lower surface of each spraying assembly has an outwardly convex conical spraying area. Each spraying assembly has multiple air passages, and the multiple air passages on adjacent spraying assemblies are staggered. An air outlet pipe is provided at the top of the desulfurization tower.

[0008] As a preferred embodiment of the present invention, the porous gas outlet assembly includes an air inlet pipe vertically disposed at the bottom of the desulfurization tower. The bottom of the air inlet pipe is provided with an internally hollow gas collection box. Multiple horizontal pipes are uniformly connected around the center of the desulfurization tower on the gas collection box. Each horizontal pipe is provided with an overflow pipe in the vertical direction. Each overflow pipe is provided with an elastic sealing element at its top. When the gas pressure of the multiple overflow pipes reaches a preset value, the multiple elastic sealing elements release the seal on the overflow pipes.

[0009] As a preferred embodiment of the present invention, the elastic sealing member includes a support rod fixedly disposed at the top of the vent pipe, a fixing plate disposed at the top of the support rod, a sealing plate connected to the bottom of the fixing plate by a spring, a sliding rod slidably penetrating the fixing plate disposed at the top of the sealing plate, and a plurality of magnetic blocks for adsorbing the top of the sealing plate disposed at the bottom of the fixing plate.

[0010] In a preferred embodiment of the present invention, the spray assembly includes a disc horizontally disposed on the inner wall of the desulfurization tower, and the disc is adapted to the interior of the desulfurization tower. The air outlets are uniformly disposed on the disc. The disc has a cavity inside and is connected to the outside of the desulfurization tower through a spray pipe. The bottom of the disc is uniformly provided with a plurality of hollow conical protrusions. Each conical protrusion is provided with a plurality of spray holes, and each conical protrusion is connected to the interior of the disc. Except for the air outlet on the uppermost disc, the top of each air outlet corresponds to a conical protrusion.

[0011] As a preferred embodiment of the present invention, the top of the disk is recessed inward to form an arc-shaped groove.

[0012] In a preferred embodiment of the present invention, the spray holes are arranged obliquely downward on the conical protrusion.

[0013] As a preferred embodiment of the present invention, a plurality of support blocks are provided on the inner sidewall of the desulfurization tower. Each set of support blocks is evenly distributed around the vertical center line of the desulfurization tower. Each support block is provided with a limiting hole. The bottom of each disc is provided with a plurality of limiting rods, and each limiting rod is inserted into the corresponding limiting hole. The bottom of each limiting rod extends to the bottom of the corresponding support block and is provided with a limiting pin.

[0014] As a preferred embodiment of the present invention, the top of the air vent is provided with an angle.

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

[0016] (1) The present invention uses a porous gas outlet component to uniformly disperse the flue gas entering the sulfur tower. After the flue gas is dispersed, it moves upward through the air outlets on multiple spray components and is washed by the spray components to treat the flue gas, ensuring that the flue gas is fully treated. When the flue gas passes through the conical protrusion surface, it can be further guided and dispersed, expanding the effective contact area between the flue gas and the liquid medicine, so that the flue gas can fully contact the liquid medicine, further improving the treatment effect of the flue gas.

[0017] (2) In this invention, by staggering the air passages in adjacent spray components, the flue gas can be prevented from passing directly through the upper air passage after passing through the lower spray component, and needs to move to the side again, thus further ensuring the treatment effect of the flue gas. Attached Figure Description

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] Figure 1 This invention provides a structural schematic diagram of a heating boiler flue gas treatment device;

[0020] Figure 2 This invention provides a cross-sectional view of a flue gas treatment device for a heating boiler. Figure 1 ;

[0021] Figure 3 This invention provides a cross-sectional view of a flue gas treatment device for a heating boiler. Figure 2 ;

[0022] Figure 4 Provided for the present invention Figure 2 An enlarged structural diagram of part A shown in the figure;

[0023] Figure 5 Provided for the present invention Figure 3 An enlarged structural diagram of part B shown in the figure;

[0024] Figure 6 Provided for the present invention Figure 3 The diagram shows an enlarged view of the structure of part C.

[0025] The labels in the diagram represent the following:

[0026] 1. Desulfurization tower; 2. Porous air outlet assembly; 3. Spray assembly; 4. Air outlet; 5. Air outlet pipe; 6. Support block; 7. Limiting hole; 8. Limiting rod; 9. Limiting pin;

[0027] 201. Intake pipe; 202. Air collection box; 203. Overflow pipe; 204. Elastic sealing component; 205. Support rod; 206. Fixing plate; 207. Sealing plate; 208. Magnetic block; 209. Horizontal tube; 301. Disc; 302. Conical protrusion. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] like Figures 1 to 6 As shown, the present invention provides a flue gas treatment device for a heating boiler, including a desulfurization tower 1. A porous air outlet component 2 for air intake is provided at the bottom of the desulfurization tower 1, and the porous air outlet component 2 uniformly outlets air around the vertical center line of the desulfurization tower 1. Multiple spray components 3 for spraying liquid are arranged from top to bottom inside the desulfurization tower 1, and the multiple spray components 3 are staggered. The lower surface of each spray component 3 is convex conical at the liquid spraying point. Multiple air passages 4 are opened on each spray component 3, and the multiple air passages 4 on adjacent spray components 3 are staggered. An air outlet pipe 5 is provided at the top of the desulfurization tower 1.

[0031] In practical application of this application, the flue gas generated by the heating boiler enters the desulfurization tower 1 through the porous gas outlet component 2 and is initially dispersed, so that the flue gas is evenly discharged from the porous gas outlet component 2, which facilitates the spray component 3 to fully contact the flue gas when spraying the chemical solution on the flue gas, thereby improving the treatment effect of the flue gas.

[0032] As the flue gas passes through multiple spray components 3 sequentially via the air inlet 4, it is sprayed by the multiple spray components 3, thus effectively treating the flue gas. Secondly, due to the misalignment of the air inlets 4 on adjacent spray components 3, the air inlets 4 on the upper and lower spray components 3 are not located on the same vertical line. As a result, after passing through the lower air inlet 4, the flue gas will flow a certain distance below the spray component 3 before moving upward through the air inlet 4. The flue gas diffuses again during the flow, thereby further improving the treatment effect of the spray components 3 on the flue gas when spraying the chemical solution.

[0033] Secondly, the spraying liquid part below the spraying component 3 is cone-shaped, which causes some of the flue gas to flow along the cone-shaped part, thereby increasing the contact area between the flue gas and the liquid, and thus further improving the treatment effect of the flue gas.

[0034] In this application, the flue gas is dispersed multiple times through the porous gas outlet component 2, multiple spray components 3, and the cone on the spray component 3, so that the flue gas and the liquid medicine can be fully and effectively contacted, thereby ensuring the treatment effect of the flue gas.

[0035] In this embodiment, the desulfurization tower 1 is a prior art, and its recycling treatment of the spray liquid is also a prior art. For example, the spray liquid after contacting the flue gas is collected in the circulating water pool at the bottom of the desulfurization tower 1 for storage. After liquid phase reflux and sedimentation, it is recycled and sprayed again by the circulating pump. The sediment layer is discharged outside the desulfurization tower 1. The principle of this prior art will not be elaborated in detail.

[0036] The porous gas outlet assembly 2 includes an inlet pipe 201 vertically installed at the bottom of the desulfurization tower 1. The bottom of the inlet pipe 201 is provided with an internally hollow gas collection box 202. Multiple horizontal pipes 209 are evenly connected around the center of the desulfurization tower 1 on the gas collection box 202. Each horizontal pipe 209 is provided with an overflow pipe 203 in the vertical direction. Each overflow pipe 203 is provided with an elastic sealing element 204 at the top. When the gas pressure of multiple overflow pipes 203 reaches a preset value, the multiple elastic sealing elements 204 release the seal on the overflow pipes 203.

[0037] The elastic sealing component 204 includes a support rod 205 fixedly installed at the top of the vent pipe 203. A fixing plate 206 is provided at the top of the support rod 205. A sealing plate 207 is connected to the bottom of the fixing plate 206 by a spring. A sliding rod is provided at the top of the sealing plate 207 and slides through the fixing plate 206. A plurality of magnetic blocks 208 for adsorbing the top of the sealing plate 207 are also provided at the bottom of the fixing plate 206.

[0038] Flue gas enters the gas collection box 202 through the inlet pipe 201 and gradually fills the gas collection box 202, multiple horizontal pipes 209 and multiple overflow pipes 203. When the gas pressure reaches the preset value, the flue gas pushes open the elastic sealing parts 204 on the multiple overflow pipes 203, thereby dispersing and releasing the flue gas into the desulfurization tower 1.

[0039] Multiple horizontal pipes 209 are evenly distributed inside the desulfurization tower 1, meaning that multiple overflow pipes 203 are also evenly distributed inside the desulfurization tower 1, so that the flue gas is in a uniformly dispersed state when it enters the desulfurization tower 1.

[0040] By sealing the overflow pipe 203 with the elastic sealing component 204, the flue gas is released into the desulfurization tower 1 only after filling the gas collection box 202, multiple horizontal pipes 209, and multiple overflow pipes 203. This ensures the uniform dispersion of the flue gas, allowing it to better contact the sprayed liquid and achieve better treatment results.

[0041] When the flue gas compresses the elastic sealing element 204, it first compresses the sealing plate 207. The sealing plate 207 seals the top of the overflow pipe 203 by the elastic force of the spring. When the gas pressure is greater than the elastic force of the spring, the sealing plate 207 is squeezed upward and further squeezes the spring. The gas is released from between the sealing plate 207 and the overflow pipe 203 into the desulfurization tower 1.

[0042] The magnetic force of the magnetic block 208 attracts the sealing plate 207, so that the sealing plate 207 can maintain a relatively stable state after it is separated from the overflow pipe 203, thus preventing the sealing plate 207 from shaking up and down and affecting the release of flue gas.

[0043] The spray assembly 3 includes a disc 301 horizontally arranged on the inner wall of the desulfurization tower 1, and the disc 301 is adapted to the interior of the desulfurization tower 1. Air outlets 4 are evenly arranged on the disc 301. The disc 301 has a cavity inside and is connected to the outside of the desulfurization tower 1 through a spray pipe. Multiple hollow conical protrusions 302 are evenly arranged on the inner bottom of the disc 301. Each conical protrusion 302 is provided with multiple spray holes, and each conical protrusion 302 is connected to the interior of the disc 301. Except for the air outlet 4 on the uppermost disc 301, the top of each air outlet 4 corresponds to a conical protrusion 302.

[0044] As the flue gas moves upward, the liquid medicine enters the disc 301 through the spray pipe and then enters multiple conical protrusions 302. Subsequently, the liquid medicine is sprayed onto the flue gas through the spray holes, thereby treating the flue gas.

[0045] The conical protrusion 302 allows the flue gas to flow along its surface as it passes over it, further guiding and dispersing the gas. The spray holes on the conical protrusion 302 can spray liquid chemicals in all directions, further improving the treatment effect on the flue gas.

[0046] In addition to the air passage 4 on the uppermost disc 301, each of the other air passages 4 has a conical protrusion 302 above it. This means that after the flue gas passes through the air passage 4, it will not pass directly through the air passage 4 on the upper disc 301. Instead, it will be guided and dispersed by the conical protrusion 302 and sprayed with the liquid, so that the flue gas will be dispersed multiple times, thereby further improving the treatment effect of the flue gas.

[0047] The top of the disc 301 is recessed inward to form an arc-shaped groove.

[0048] The liquid medicine sprayed through the spray hole falls onto the upper surface of the disc 301 after washing the flue gas. Since the upper surface of the disc 301 is an arc-shaped groove, the liquid medicine will slide towards the center of the upper surface of the disc 301 and pass through multiple air passages 4, so that the liquid medicine can slide down from the air passages 4. Therefore, multiple air passages 4 can be set so that the liquid medicine can fall down through the air passages 4, and the fallen liquid medicine can also wash the flue gas that passes through again.

[0049] The spray nozzles are set at an angle downwards on the conical protrusion 302.

[0050] This prevents the liquid medicine from entering the spray holes as it slides down, thus avoiding the problem of clogging the spray holes.

[0051] Multiple sets of support blocks 6 are provided on the inner wall of the desulfurization tower 1. Each set of support blocks 6 is evenly distributed around the vertical center line of the desulfurization tower 1. Each support block 6 has a limit hole 7. Each disc 301 has multiple limit rods 8 at its bottom. Each limit rod 8 is inserted into the corresponding limit hole 7. The bottom of each limit rod 8 extends to the bottom of the corresponding support block 6 and is provided with a limit pin 9.

[0052] When impacted by flue gas, the disc 301 floats upward, causing multiple limit rods 8 to move upward along the limit holes 7. The limit rods 8 are restricted from detaching from the support block 6 by the limit pins 9. After the impact force of the flue gas decreases, the disc 301 falls back onto the multiple support blocks 6, shaking off the debris on the disc 301. That is, when the flow rate of the flue gas fluctuates, the disc 301 can move up and down to shake off the debris, avoiding the problem of debris accumulation causing the spray holes and air passages 4 to gradually become smaller or blocked.

[0053] The top of the air outlet 4 is angled. The angle facilitates the flow of the liquid medicine.

[0054] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art can make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as the technology or embodiments that are substantially the same as the present invention.

[0055] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A flue gas treatment device for a heat boiler, characterized in that, The application relates to a desulfurization tower (1), the inner bottom of the desulfurization tower (1) is provided with a porous air outlet assembly (2) for air inlet, the porous air outlet assembly (2) uniformly discharges air around the vertical center line of the desulfurization tower (1), a plurality of spray assemblies (3) for spraying liquid medicine are arranged in the desulfurization tower (1) from top to bottom, the plurality of spray assemblies (3) are arranged in a staggered mode, the lower surface of each spray assembly (3) is outwardly convex and conical, a plurality of air passing holes (4) are formed in each spray assembly (3), and the air passing holes (4) on the adjacent spray assemblies (3) are arranged in a staggered mode, and an air outlet pipe (5) is arranged at the top of the desulfurization tower (1). The spray assembly (3) comprises a disc (301) horizontally arranged on the inner side wall of the desulfurization tower (1), the disc (301) is matched with the inside of the desulfurization tower (1), the air passing holes (4) are uniformly arranged on the disc (301), the disc (301) has a cavity in the inside, and the cavity is communicated with the outside of the desulfurization tower (1) through a spray pipe, the inner bottom of the disc (301) is uniformly provided with a plurality of hollow conical protrusions (302), a plurality of spray holes are arranged on each conical protrusion (302), and each conical protrusion (302) is communicated with the inside of the disc (301), and the top of each air passing hole (4) corresponds to a conical protrusion (302) except that the air passing holes (4) on the uppermost disc (301). The porous air outlet assembly (2) comprises an air inlet pipe (201) vertically arranged at the bottom of the desulfurization tower (1), the bottom of the air inlet pipe (201) is provided with a hollow gas collecting box (202), a plurality of horizontal pipes (209) are uniformly communicated with the center of the desulfurization tower (1) on the gas collecting box (202), an overflow pipe (203) is arranged on each horizontal pipe (209) in the vertical direction, an elastic sealing piece (204) is arranged at the top of each overflow pipe (203), and when the air pressure of the plurality of overflow pipes (203) reaches a preset value, the elastic sealing pieces (204) are removed from the overflow pipes (203). The elastic sealing piece (204) comprises a supporting rod (205) fixedly arranged at the top of the overflow pipe (203), a fixed plate (206) is arranged at the top of the supporting rod (205), a sealing plate (207) is connected to the bottom of the fixed plate (206) through a spring, a sliding rod penetrating through the fixed plate (206) is arranged at the top of the sealing plate (207), and a plurality of magnetic blocks (208) for adsorbing the top of the sealing plate (207) are arranged at the bottom of the fixed plate (206).

2. A flue gas treatment device for a heat boiler according to claim 1, characterized in that, The top of the disc (301) is inwardly recessed to form a circular arc-shaped groove.

3. A flue gas treatment device for a heat boiler according to claim 1, characterized in that, The spray holes are arranged on the conical protrusion (302) in a downward inclined mode.

4. A flue gas treatment device for a heat boiler according to claim 1, characterized in that, The inner side wall of the desulfurization tower (1) is provided with a plurality of groups of supporting blocks (6), each group of the supporting blocks (6) is uniformly distributed around the vertical center line of the desulfurization tower (1), each supporting block (6) is provided with a limiting hole (7), the bottom of each disc (301) is provided with a plurality of limiting rods (8), each limiting rod (8) is inserted into the corresponding limiting hole (7), and the bottom of each limiting rod (8) extends to the bottom of the corresponding supporting block (6) and is provided with a limiting pin (9).

5. A flue gas treatment device for a heat boiler according to claim 1, characterized in that, The top of the gas passing port (4) is provided with an inclined angle.

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