Catalytic flue gas desulfurization tower
By designing a multi-layer catalyst structure and a dynamic spray washing mechanism in the catalytic flue gas desulfurization tower, the problems of uneven catalyst adsorption and uneven spraying were solved, achieving efficient multi-layer segmented adsorption and layered washing, thus improving the desulfurization effect of the desulfurization tower.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGSU HONEST ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2026-05-27
- Publication Date
- 2026-07-14
AI Technical Summary
Existing catalytic flue gas desulfurization towers suffer from uneven catalyst adsorption, uneven spraying leading to blind spots in the washing process, caking, and channeling. Furthermore, dilute acid spraying can cause over- or under-washing of the catalyst layer.
The design incorporates a multi-layered catalyst structure, with a washing mechanism at the top of each catalyst layer. A hydraulically driven component drives a rotating spray component and a swing component for dynamic spraying. Combined with a scraping and comb-tooth unblocking mechanism, this achieves multi-layered segmented adsorption and stratified washing, avoiding spray dead zones and improving the washing effect.
It achieves uniform adsorption and efficient washing of the catalyst, avoids uneven spraying and washing dead zones, improves desulfurization effect, solves the problem of over-washing or under-washing between catalyst layers, and enhances the efficiency of catalyst use.
Smart Images
Figure CN122377285A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of desulfurization tower technology, specifically relating to a catalytic flue gas desulfurization tower. Background Technology
[0002] The core tower-type equipment for industrial flue gas purification removes SO2 through physical-chemical reactions involving gas-liquid and gas-solid contact. Classified by process, it falls into three categories: wet, semi-dry, and dry methods, adaptable to different scales, sulfur concentrations, and environmental requirements. It is crucial equipment for controlling acid rain and achieving ultra-low emissions. Catalytic flue gas desulfurization towers are one type of flue gas desulfurization tower. This type of equipment uses low-temperature catalytic oxidation as its core, integrating adsorption, catalysis, and regeneration into a single flue gas purification system. Unlike traditional wet and dry methods, its byproduct, dilute sulfuric acid, can be recycled. It is widely used in sulfuric acid plant tail gas, metallurgy, and chemical industries. However, existing catalytic flue gas desulfurization towers suffer from the following problems during operation: 1. In the existing catalytic flue gas desulfurization tower, flue gas enters from the bottom of the tower and is catalytically oxidized into sulfuric acid by a catalyst at low temperature. The adsorbed flue gas is then discharged from the top of the tower. To ensure the efficiency of flue gas catalytic adsorption, multiple layers of catalyst are usually installed. After the catalyst is saturated, it is washed with dilute sulfuric acid. However, during the washing process, the dilute acid needs to be sprayed from top to bottom. With each layer washed, the dilute acid turns into concentrated sulfuric acid, which reduces the adsorption effect of the subsequent catalyst, resulting in over-washing of the upper layer and under-washing of the lower layer.
[0003] 2. In the existing catalytic flue gas desulfurization tower, the washing process mainly uses fixed nozzles for spraying and washing. The fixed-angle spray pipes are direct sprays, which can easily damage the catalyst. In addition, the spray area is fixed, and only one area is sprayed, which can easily cause problems such as more in the middle, less at the edges, and many dead corners. There are washing blind spots, which can lead to caking and channeling problems, reducing the desorption and washing effect. Summary of the Invention
[0004] The purpose of this invention is to provide a catalytic flue gas desulfurization tower with a simple structure and reasonable design in order to solve the above-mentioned problems.
[0005] The present invention achieves the above objectives through the following technical solutions: A catalytic flue gas desulfurization tower includes a desulfurization tower body, an exhaust mechanism at the top of the desulfurization tower body, an air inlet pipe at the front of the desulfurization tower body, multiple acid storage tanks at the front of the desulfurization tower body, several independent processing tanks inside the desulfurization tower body, several grid plates inside each independent processing tank, a catalyst layer detachably installed on the top of the grid plate, several fixing rods fixedly installed inside the cavity of the desulfurization tower body, multiple fixing rods in pairs, a washing mechanism between two fixing rods in the same group, and a single-stage drainage mechanism below the grid plate. The washing mechanism includes a hydraulic drive assembly, a rotary spray assembly, and an oscillating assembly. The rotary spray assembly is mounted on the hydraulic drive assembly, and the oscillating assembly is mounted on the rotary spray assembly. The hydraulic drive assembly includes a vortex housing fixedly connected between two fixed rods. A fixed shaft is rotatably mounted on the top surface inside the vortex housing. A vortex fan blade is fixedly sleeved on the outside of the fixed shaft. An inlet pipe is fixedly connected to the outer wall of the vortex housing at an eccentric position. A rotating cover is fixedly mounted on the bottom of the fixed shaft. A conical tube is fixedly mounted on the bottom of the vortex housing. The rotating cover is rotatably and sealingly connected inside the conical tube. The rotary spray assembly is equipped with a scraping mechanism, and a number of comb-tooth unblocking mechanisms are evenly installed on the rotating cover.
[0006] Preferably, the exhaust mechanism includes a first exhaust pipe fixedly connected to the top of the desulfurization tower body, the first exhaust pipe fixedly connected to the main pipeline, a second exhaust pipe fixedly connected to the middle of the main pipeline, and the end of the second exhaust pipe away from the main pipeline fixedly connected to the rear side of the middle of the desulfurization tower body.
[0007] Preferably, an air inlet pipe is fixedly installed on the front side of the desulfurization tower body, and the air inlet pipe includes multiple air inlet manifolds, which are fixedly connected to the middle of the front side of the desulfurization tower body.
[0008] Preferably, the rotary spray assembly includes several sealed, rotatable branch pipes that penetrate the side wall of the rotating cover. Several connecting pipes are uniformly fixedly connected to the bottom of the branch pipes. A guide groove is fixedly installed on the inner wall of the connecting pipe. The guide groove is used to guide the water flow to form a vortex. A nozzle is sealed and rotatably installed at the bottom of the connecting pipe. A linkage shaft is fixedly installed at the center of the bottom surface inside the nozzle. A drive fan blade is fixedly installed at the top of the linkage shaft. The drive fan blade is located below the guide groove.
[0009] Preferably, a plurality of nozzles are uniformly fixedly installed on the outer wall of the bottom of the nozzle, a plurality of spray holes are uniformly opened at the bottom of the nozzle, a plurality of cutting blocks are uniformly installed on the inner wall of the nozzle, and a plurality of segmented blocks are uniformly fixedly installed in the upper middle part of the inside of the nozzle.
[0010] Preferably, the swing assembly includes a fixed ring fixedly connected to the bottom of the tapered tube. A plurality of toothed columns are uniformly fixedly installed on the outer wall of the fixed ring. The toothed columns are distributed in two layers, which are staggered. A protective shell for protecting the toothed columns is fixedly installed at the bottom of the rotating cover. The top of the protective shell is rotatably connected to the bottom of the tapered tube. A plurality of mounting rods are rotatably passed through the outer wall of the protective shell. Each mounting rod corresponds to a diverter tube. A gear that meshes with the toothed column is fixedly sleeved at one end of the mounting rod. A rotating disk is fixedly connected at the other end of the mounting rod after it rotatably passes through the protective shell. A limit rod is fixedly installed on one side of the rotating disk near the edge. An mounting ring is fixedly sleeved on the outside of the diverter tube. A fixed plate is fixedly installed on the top of the mounting ring. A limit groove for the limit rod to slide is opened on the fixed plate.
[0011] Preferably, the single-stage drainage mechanism includes a conical receiving tray fixedly connected inside the desulfurization tower body. A drainage pipe is fixedly connected to the center of the bottom of the conical receiving tray. The end of the drainage pipe away from the conical receiving tray is fixedly inserted through the rear side of the desulfurization tower body. Several connecting holes are evenly opened on the conical receiving tray. A fixing pipe is fixedly installed on the top of the conical receiving tray outside the connecting holes. The fixing pipe is connected to the connecting holes. Two side plates are symmetrically installed on the top of the outer wall of the fixing pipe. A sealing cover is hinged between the two side plates. A sealing ring is installed between the sealing cover and the top of the fixing pipe. A stop block is fixedly installed on the top of the two side plates.
[0012] Preferably, the acid storage tank is equipped with a suction pump, the output end of which is fixedly connected to the liquid inlet pipe via a pipeline. An oil separator and a liquid seal tank are provided on the front side of the desulfurization tower body. The oil separator is connected to the drain pipe and the liquid seal tank. The bottom of the main pipeline is fixedly connected to the original flue through a flue pipe. The inner wall of the independent treatment tank of the desulfurization tower body is provided with an anti-corrosion lining, and the inner wall of the acid storage tank is also provided with an anti-corrosion lining. The independent treatment tank of the desulfurization tower body is made of concrete or stainless steel.
[0013] Preferably, the scraping mechanism includes a second mounting plate fixedly installed on one side of the diversion pipe, a plurality of second spring telescopic rods fixedly installed on the second mounting plate, a rubber scraper fixedly installed at the bottom of the plurality of second spring telescopic rods, and a wind turbine blade rotatably installed at the center of the end face of the diversion pipe.
[0014] Preferably, the comb-tooth unblocking mechanism includes a first mounting plate fixedly installed outside the rotating cover, a connecting rod fixedly installed at the bottom of the first mounting plate, a first bearing plate fixedly installed at the bottom of the connecting rod, a plurality of first spring telescopic rods fixedly passing through the first bearing plate, and rubber soft comb teeth installed at the bottom of the output end of the first spring telescopic rod.
[0015] The beneficial effects of this invention are as follows: 1. Unlike existing technologies, this invention features a multi-layered catalyst for multi-layered adsorption of flue gas, resulting in good adsorption performance and effective flue gas desulfurization. Each catalyst layer is equipped with a washing mechanism at its top and a single-stage drainage mechanism at its bottom, achieving multi-layered segmented adsorption, layered washing and desorption, and layered drainage. This effectively solves the problem of poor performance in the lower layers when multiple layers are washed together.
[0016] 2. Unlike existing technologies, this invention uses a hydraulic drive component to drive a rotating spray component and a swing component to work simultaneously. The rotating spray component synchronously drives the diversion pipe and the nozzles on it to revolve and spray, while the nozzles and spray nozzles rotate and spray. Simultaneously, it drives the swing component to swing back and forth, which in turn drives the nozzles and spray nozzles to swing back and forth, realizing "revolutionary spray + rotational spray + reciprocating swing spray". This is beneficial for dynamic spray washing of the catalyst, ensuring uniform spraying, avoiding problems of uneven spraying and washing dead corners, eliminating caking and channeling problems, and achieving good washing effect.
[0017] 3. Unlike existing technologies, the nozzle of this invention is equipped with a dividing block and a cutting block inside, which cuts and atomizes the water flow inside, and then sprays it out from the nozzle and spray port, realizing the atomized spray washing of the washing liquid, avoiding the water flow directly hitting the catalyst, and the atomized droplets have strong penetrating power.
[0018] 4. Unlike existing technologies, this invention links the comb-tooth unblocking mechanism, the scraping mechanism, and the washing mechanism. When the washing mechanism rotates and sprays, it simultaneously drives the scraping mechanism and the comb-tooth unblocking mechanism to transport and scrape the catalyst layer. The comb-tooth unblocking mechanism adapts to its vertical extension and retraction during scraping, using the elastic comb teeth to vibrate and beat the catalyst layer, improving the desorption effect, shaking off clumps of dust and sulfur paste, opening blocked pores, and improving the efficiency of subsequent adsorption treatment. In addition, the wind turbine blades rotate synchronously when the washing mechanism rotates, and the blades agitate the airflow in the tower, allowing the washing mist to spread without dead corners, enhancing microporous permeation and desorption. Attached Figure Description
[0019] Figure 1 This is a three-dimensional view of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the desulfurization tower body, exhaust mechanism, and washing mechanism of the present invention; Figure 3 This is a partial cross-sectional schematic diagram of the desulfurization tower body of the present invention; Figure 4 This is a front view of the washing mechanism and single-stage draining mechanism of the present invention; Figure 5 This is a bottom view of the washing mechanism and single-stage drainage mechanism of the present invention; Figure 6 This is a schematic diagram of the single-stage drainage mechanism of the present invention; Figure 7 This is the invention Figure 6 Enlarged view of region A in the middle; Figure 8 This is a partial cross-sectional view of the washing mechanism of the present invention; Figure 9 This is the invention Figure 8 Enlarged view of region B in the middle; Figure 10This is an exploded view of the rotating spray assembly of the present invention; Figure 11 This is a partial cross-sectional view of the rotating spray assembly of the present invention; Figure 12 This is a perspective view of the scraping mechanism and the rotary spray assembly of the present invention; Figure 13 This is a perspective view of the comb-tooth unblocking mechanism of the present invention.
[0020] In the diagram: 1. Desulfurization tower body; 2. Exhaust mechanism; 21. Main pipe; 22. No. 1 exhaust pipe; 23. No. 2 exhaust pipe; 3. Oil separator; 4. Acid storage tank; 5. Liquid seal tank; 6. Air inlet pipe; 7. Raw chimney; 8. Scrubbing mechanism; 81. Hydraulic drive assembly; 811. Liquid inlet pipe; 812. Vortex shell; 813. Vortex fan blade; 814. Fixed shaft; 815. Conical tube; 816. Rotating cover; 82. Rotary spray assembly; 821. Diverter pipe; 822. Guide channel; 823. Connecting pipe; 824. Drive fan blade; 825. Linkage shaft; 826. Spray head; 827. Nozzle; 828. Dividing block; 829. Cutting block; 83. Swing assembly; 831. Fixed ring. 832. Toothed column; 833. Protective shell; 834. Mounting ring; 835. Gear; 836. Mounting rod; 837. Rotating disk; 838. Fixing plate; 9. Single-stage drainage mechanism; 91. Drainage pipe; 92. Conical receiving tray; 93. Connecting hole; 94. Sealing cover; 95. Fixing pipe; 96. Stop block; 10. Catalyst layer; 11. Grating plate; 12. Fixing rod; 13. Wind turbine blade; 14. Comb tooth unblocking mechanism; 141. Mounting plate No. 1; 142. Connecting rod; 143. Bearing plate No. 1; 144. Rubber soft comb teeth; 145. Spring telescopic rod No. 1; 15. Scraping mechanism; 151. Mounting plate No. 2; 152. Spring telescopic rod No. 2; 153. Rubber scraper. Detailed Implementation
[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0022] Example: Please refer to Figure 1 , Figure 2 and Figure 3A catalytic flue gas desulfurization tower includes a desulfurization tower body 1. The number of desulfurization tower bodies 1 can be selected according to actual needs, and can be two or more. Both desulfurization tower bodies 1 have a common exhaust mechanism 2 at their tops for discharging waste gas. Both desulfurization tower bodies 1 have a common air inlet pipe 6 at their front sides for introducing sulfur-containing flue gas into the interior of the desulfurization tower body 1. Multiple acid storage tanks 4 are located at the front of the desulfurization tower body 1. Several independent treatment tanks are installed inside the desulfurization tower body 1, and the number of independent treatment tanks can be selected according to actual needs, thus forming independent treatment chambers. Therefore, a single desulfurization tower body 1 forms two independent flue gas desulfurization treatment areas, achieving a doubling of treatment efficiency. Each chamber is equipped with several grid plates 11. A catalyst layer 10 is detached and installed at the top. Several fixing rods 12 are symmetrically fixed inside the cavity of the desulfurization tower body 1. The fixing rods 12 are arranged in pairs. A washing mechanism 8 for washing and regenerating the catalyst layer 10 is set between the two fixing rods 12 in the same group. A single-stage drainage mechanism 9 for discharging waste liquid is set below the grid plate 11. An air inlet pipe 6 is fixedly installed on the front side of the desulfurization tower body 1. The air inlet pipe 6 includes multiple air inlet manifolds. The air inlet manifolds are fixedly connected to the middle of the front side of the desulfurization tower body 1. An oil separator 3 and a liquid seal tank 5 are set on the front side of the desulfurization tower body 1. The oil separator 3 is connected to the drain pipe 91. The oil separator 3 is connected to the liquid seal tank 5 to achieve oil separation before liquid sealing. The internal structure of the desulfurization tower body 1, the washing mechanism 8 and the single-stage drainage mechanism 9 are all made of acid-resistant materials.
[0023] In use, the desulfurization tower body 1 is used for flue gas adsorption desulfurization, spray washing, and emission of desulfurized flue gas. The catalyst layer 10 adopts a new type of carbon-based catalyst (this is existing technology and will not be described in detail here). The air inlet pipe 6 is used to pass sulfur-containing flue gas into an independent chamber. The catalyst layer 10 is used to adsorb and desulfurize the flue gas. The washing mechanism 8 uses a "revolutionary spray + rotational spray + reciprocating swing spray" method to wash and regenerate the catalyst layer 10. The spray area is large, wide, and highly uniform, achieving spray washing without dead angles. The single-stage drainage mechanism 9 realizes separate drainage of each layer of catalyst layer 10 after washing. The acid storage tank 4 is used to store dilute sulfuric acid for washing. The main task of the oil separator 3 is to purify the regenerated liquid generated by the desulfurization system, especially to remove oily substances. The liquid seal tank 5 uses a liquid to form a seal to cut off the airflow and prevent leakage. The air inlet pipe 6 is used to pass sulfur-containing waste gas into the independent treatment chamber. The air inlet manifold is located below the single-stage drainage mechanism 9.
[0024] Please see Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7The single-stage drainage mechanism 9 includes a conical receiving tray 92 fixedly connected inside the desulfurization tower body 1. A drainage pipe 91 is fixedly connected to the bottom center of the conical receiving tray 92. One end of the drainage pipe 91 away from the conical receiving tray 92 is fixedly inserted through the rear side of the desulfurization tower body 1. Several connecting holes 93 are evenly opened on the conical receiving tray 92. A fixing pipe 95 is fixedly installed on the top of the conical receiving tray 92 outside the connecting holes 93. The fixing pipe 95 is connected to the connecting holes 93. Two side plates are symmetrically installed on the top of the outer wall of the fixing pipe 95. A sealing cover 94 is hinged between the two side plates. A sealing ring is installed between the sealing cover 94 and the top of the fixing pipe 95. A stop block 96 is fixedly installed on the top of the two side plates.
[0025] In use, sulfur-containing flue gas from the outside enters the independent treatment chamber through the inlet pipe 6. The flue gas enters the fixed pipe 95 through the connecting hole 93 until the flue gas pushes open the sealing cover 94. Then, the flue gas enters the upper part through the conical receiving plate 92. Subsequently, the sulfides in the waste gas are adsorbed by the catalyst layer 10. The chamber is equipped with multiple catalyst layers 10. After being adsorbed by one catalyst layer 10, the sulfur-containing waste gas passes through the single-stage drainage mechanism 9 and is adsorbed again by the multiple catalyst layers 10, thus realizing multi-stage adsorption of sulfur-containing flue gas. The flue gas after multi-stage adsorption is discharged from the exhaust mechanism 2. The number of multiple catalyst layers 10, single-stage drainage mechanism 9 and washing mechanism 8 in each chamber is designed according to the requirements. When the air intake stops, the sealing cover 94 falls downward under its own gravity and seals the fixed pipe 95. The stop block 96 is used to block the sealing cover 94 to prevent the sealing cover 94 from opening too wide.
[0026] Please see Figure 2 and Figure 3 The exhaust mechanism 2 includes a first exhaust pipe 22 fixedly connected to the top of the desulfurization tower body 1. The two first exhaust pipes 22 are fixedly connected to a main pipe 21. The middle of the main pipe 21 is fixedly connected to two second exhaust pipes 23. The ends of the two second exhaust pipes 23 away from the main pipe 21 are fixedly connected to the rear side of the middle of the desulfurization tower body 1. The bottom of the main pipe 21 is fixedly connected to the original flue 7 through a flue pipe. When the adsorbed flue gas enters the main pipe 21 from the first exhaust pipe 22 and the second exhaust pipe 23, it then enters the original flue 7 through the pipe and is discharged from the original flue 7. The inner wall of the independent treatment tank of the desulfurization tower body 1 is provided with an anti-corrosion lining. The inner wall of the acid storage tank 4 is also provided with an anti-corrosion lining. The independent treatment tank is usually made of stainless steel or concrete, and the anti-corrosion lining is usually made of fiberglass, anti-corrosion ceramic tile, vinyl resin or a combination of multiple materials.
[0027] Please see Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9The washing mechanism 8 includes a hydraulic drive assembly 81, a rotary spray assembly 82, and an oscillating assembly 83. The rotary spray assembly 82 is mounted on the hydraulic drive assembly 81, and the oscillating assembly 83 is mounted on the rotary spray assembly 82. The hydraulic drive assembly 81 includes a vortex housing 812 fixedly connected between two fixed rods 12. A fixed shaft 814 is rotatably mounted on the top surface inside the vortex housing 812. A vortex fan blade 813 is fixedly sleeved on the outside of the fixed shaft 814. An inlet pipe 811 is fixedly connected to the outer wall of the vortex housing 812 at an eccentric position. A rotating cover 816 is fixedly mounted on the bottom of the fixed shaft 814. A conical tube 815 is fixedly mounted on the bottom of the vortex housing 812. The rotating cover 816 is rotatably and sealingly connected to the inside of the conical tube 815. A suction pump is installed inside the acid storage tank 4. The output end of the suction pump is fixedly connected to the inlet pipe 811 through a pipe.
[0028] Please see Figure 8 , Figure 9 , Figure 10 and Figure 11 The rotating spray assembly 82 includes several uniformly sealed and rotatably rotatably penetrating the side wall of the rotating cover 816. Several connecting pipes 823 are uniformly and fixedly connected to the bottom of the connecting pipes 821. A guide groove 822 is fixedly installed on the inner wall of the connecting pipe 823. The guide groove 822 is used to guide the water flow to form a vortex. A nozzle 826 is sealed and rotatably installed at the bottom of the connecting pipe 823. A linkage shaft 825 is fixedly installed at the center of the bottom surface of the nozzle 826. A drive fan blade 824 is fixedly installed at the top of the linkage shaft 825. The drive fan blade 824 is located below the guide groove 822. Several nozzles 827 are uniformly and fixedly installed on the outer wall of the bottom of the nozzle 826. Several spray holes are uniformly opened at the bottom of the nozzle 826. Several cutting blocks 829 are uniformly installed on the inner wall of the nozzle 826. Several dividing blocks 828 are uniformly and fixedly installed in the upper middle part of the inside of the nozzle 826.
[0029] Please see Figure 8 and Figure 9The swing assembly 83 includes a fixing ring 831 fixedly connected to the bottom of the tapered tube 815. A plurality of toothed pillars 832 are uniformly fixedly installed on the outer wall of the fixing ring 831, arranged in two layers, with the two layers of toothed pillars 832 staggered. A protective shell 833 for protecting the toothed pillars 832 is fixedly installed at the bottom of the rotating cover 816. The top of the protective shell 833 is rotatably connected to the bottom of the tapered tube 815. A plurality of mounting rods 836 are uniformly rotatably passed through the outer wall of the protective shell 833. The mounting rods 836 are connected to... One-to-one correspondence between the diverter pipes 821 and the mounting rod 836. One end of the mounting rod 836 is fixedly sleeved with a gear 835 that meshes with the toothed column 832. The other end of the mounting rod 836 rotates through the protective shell 833 and is fixedly connected to a rotating disk 837. A limit rod is fixedly installed on one side of the rotating disk 837 near the edge. An mounting ring 834 is fixedly sleeved on the outside of the diverter pipe 821. A fixing plate 838 is fixedly installed on the top of the mounting ring 834. A limit groove is opened on the fixing plate 838 for the limit rod to slide up and down. One end of the limit rod passes through the limit groove.
[0030] When the multi-layer catalyst layer 10 becomes saturated and requires washing, the suction pump in the acid storage tank 4 is activated. This high-pressure pump delivers the dilute acid solution, ensuring sufficient pressure to drive the single-stage drainage mechanism 9 and the washing mechanism 8. The acid storage tank 4 transports the stored dilute acid solution through a pipeline to the inlet pipe 811, which then enters the vortex housing 812. The inlet pipe 811 has an eccentric design; upon entry, the dilute acid solution pushes the vortex fan blades 813 to rotate from the side. The vortex fan blades 813 drive the fixed shaft 814 to rotate, simultaneously rotating the rotating cover 816 and its branch pipe 821. After being guided by the conical pipe 815, the dilute acid solution enters the rotating cover 816 and then the branch pipe 821. The rotating spray assembly 82 rotates synchronously, causing the nozzle 826 to revolve around the center of the fixed shaft 814. The dilute acid enters the diversion pipe 821 and then the connecting pipe 823. After being guided by the guide groove 822, the dilute acid forms a rotating vortex. This vortex synchronously drives the drive fan blade 824 and its linkage shaft 825 to rotate, simultaneously causing the nozzle 826 to rotate around the linkage shaft 825. This, in turn, synchronously drives the nozzle 826 and its nozzles 827 to rotate, achieving "rotation + revolution" spraying. Furthermore, after the pickling liquid enters the nozzle 826, it is cut and atomized by the dividing block 828 and the cutting block 829. The atomized dilute acid is then sprayed out from the nozzles 827 and the spray nozzle, achieving mist spraying. The rotating spray system utilizes atomized dilute acid solution with strong penetrating power. As the rotating shroud 816 and protective shell 833 revolve around the center of the fixed shaft 814, they simultaneously drive the mounting rod 836 and its gear 835 to revolve around the fixed shaft 814. When the gear 835 meshes with the upper gear 832, it simultaneously drives the gear 835 and its mounting rod 836 to rotate, and also drives the rotating disk 837 and its limiting rod to rotate. Because the limiting rod slides up and down within the limiting groove, it then drives the fixed plate 838, mounting ring 834, and its diverter pipe 821 to swing forward, subsequently driving the nozzle 826 to swing forward. When the gear 835 meshes with the lower gear 832, it drives the diverter pipe 821 to swing in the opposite direction, from... The reverse oscillation of the nozzle 826 is achieved because the upper and lower toothed columns 832 are staggered, and the gear 835 completely disengages from the upper toothed column 832 before engaging with the lower toothed column 832, thus avoiding interference. This enables the nozzle 826 to spray in both directions, achieving "revolution + rotation + reciprocating oscillation" spraying, which is beneficial for dynamic spraying and washing of the catalyst, ensuring uniform spraying, avoiding uneven spraying and washing dead angles, eliminating caking and channeling problems, and achieving good washing effect. During the washing process, the sealing cover 94 is in a sealed state, and the washed acid enters the conical receiving tray 92 and is then discharged from the drain pipe 91, realizing separate washing and drainage of each multi-layer catalyst layer 10.
[0031] Please see Figure 8 and Figure 12 The scraping mechanism 15 includes a second mounting plate 151 fixedly installed on one side of the diversion pipe 821. Several second spring telescopic rods 152 are fixedly installed on the second mounting plate 151. A rubber scraper 153 is fixedly installed at the bottom of the multiple second spring telescopic rods 152. A wind turbine blade 13 is rotatably installed at the center of the end face of the diversion pipe 821.
[0032] During use, as the diversion pipe 821 rotates, it simultaneously drives the second mounting plate 151 and the second spring telescopic rod 152 on it to rotate, and at the same time drives the rubber scraper 153 to rotate. The rubber scraper 153 rotates and scrapes the top of the multi-layer catalyst layer 10, which, together with the spray washing, improves the washing and regeneration efficiency. During the rotation, the diversion pipe 821 drives the wind turbine blades 13 to rotate synchronously. The wind turbine blades 13 stir the airflow in the tower, so that the washing mist can spread without dead corners, and enhance the microporous permeation and desorption.
[0033] Please see Figure 8 and Figure 13 The comb-tooth unblocking mechanism 14 includes a first mounting plate 141 fixedly installed outside the rotating cover 816. A connecting rod 142 is fixedly installed at the bottom of the first mounting plate 141. A first bearing plate 143 is fixedly installed at the bottom of the connecting rod 142. Several first spring telescopic rods 145 are fixedly passed through the first bearing plate 143. Rubber soft comb teeth 144 are installed at the bottom of the output end of the first spring telescopic rod 145.
[0034] In use, as the rotating cover 816 rotates, it simultaneously drives the first mounting plate 141 and its connecting rod 142 to rotate, and simultaneously drives the first bearing plate 143 and its spring telescopic rod 145 to rotate synchronously, and synchronously drives the rubber soft comb teeth 144 to rotate synchronously. The synchronous rotation is used to clear the pores on the catalyst layer 10. As it rotates, the rubber soft comb teeth 144 adaptively extend and retract synchronously to achieve vibration and tapping of the catalyst layer 10, which facilitates the desorption effect, shakes off agglomerated dust and sulfur paste, opens up blocked pores, and improves the efficiency of subsequent adsorption treatment.
[0035] It should be noted that, in the operation of this catalytic flue gas desulfurization tower, sulfur-containing flue gas from the outside first enters the independent treatment chamber through the inlet pipe 6. The flue gas then enters the fixed pipe 95 through the connecting hole 93 until it pushes open the sealing cover 94. Subsequently, the sulfides in the waste gas are adsorbed by the catalyst layer 10. The catalyst layer 10 is designed according to actual usage requirements to facilitate multi-stage adsorption of sulfur-containing waste gas. After adsorption, the waste gas enters the main pipeline through the first exhaust pipe 22 and the second exhaust pipe 23. In step 21, the acid solution enters the original chimney 7 through a pipe and is then discharged from the original chimney 7. After the catalyst layer 10 is saturated, the suction pump in the acid storage tank 4 is activated to draw the dilute acid solution into the inlet pipe 811. The dilute acid solution then enters the vortex housing 812. The inlet pipe 811 adopts an eccentric design. After the dilute acid solution enters, it pushes the vortex fan blade 813 to rotate from the side, thereby driving the rotating spray assembly 82 to revolve around the center of the fixed axis 814. The dilute acid solution enters the diversion pipe 821 and then enters the connecting pipe 823. After being guided by the guide channel 822, the dilute acid solution forms a rotating vortex. This vortex synchronously drives the drive fan blade 824 and its linkage shaft 825 to rotate, simultaneously causing the nozzle 826 to rotate around the linkage shaft 825. This, in turn, synchronously drives the nozzle 826 and its nozzles 827 to rotate, achieving "rotation + revolution" spraying. Simultaneously, the fixed shaft 814 synchronously drives the oscillating component 83 to work, thus achieving "revolution + rotation + reciprocating oscillation" spraying. This facilitates dynamic spray washing of the catalyst, ensuring uniformity. Uniform spraying avoids problems such as uneven spraying and washing dead corners, eliminates caking and channeling issues, and provides good washing effect. While the washing mechanism 8 is working, it simultaneously drives the scraping mechanism 15 and the comb tooth unblocking mechanism 14 to move. The synchronous rotation unblocks the pores on the catalyst layer 10. As it rotates, the rubber soft comb teeth 144 adaptively extend and retract synchronously, realizing vibration and tapping of the catalyst layer 10, which facilitates the desorption effect, shakes off agglomerated dust and sulfur paste, opens up blocked pores, and improves the efficiency of subsequent adsorption treatment.
[0036] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.
Claims
1. A catalytic flue gas desulfurization tower, comprising a desulfurization tower body (1), characterized in that: The desulfurization tower body (1) is provided with an exhaust mechanism (2) at the top, an air inlet pipe (6) is provided at the front side of the desulfurization tower body (1), a number of acid storage tanks (4) are provided at the front side of the desulfurization tower body (1), a number of independent processing tanks are provided inside the desulfurization tower body (1), a number of grid plates (11) are provided inside each independent processing tank, a catalyst layer (10) is detached and installed on the top of the grid plate (11), a number of fixing rods (12) are fixedly installed inside the cavity of the desulfurization tower body (1), the multiple fixing rods (12) are in pairs, a washing mechanism (8) is provided between the two fixing rods (12) in the same group, and a single-stage drainage mechanism (9) is provided below the grid plate (11). The washing mechanism (8) includes a hydraulic drive assembly (81), a rotary spray assembly (82), and an oscillating assembly (83). The rotary spray assembly (82) is mounted on the hydraulic drive assembly (81), and the oscillating assembly (83) is mounted on the rotary spray assembly (82). The hydraulic drive assembly (81) includes a vortex housing (812) fixedly connected between two fixed rods (12). A fixed shaft (814) is rotatably mounted on the top surface inside the vortex housing (812). A vortex fan blade (813) is fixedly sleeved on the outside of the fixed shaft (814). An inlet pipe (811) is fixedly connected to the outer wall of the vortex housing (812) at an eccentric position. A rotating cover (816) is fixedly mounted on the bottom of the fixed shaft (814). A conical tube (815) is fixedly mounted on the bottom of the vortex housing (812). The rotating cover (816) is sealed and rotatably connected inside the conical tube (815). The rotary spray assembly (82) is provided with a scraping mechanism (15), and a number of comb-tooth unblocking mechanisms (14) are evenly installed on the rotating cover (816).
2. The catalytic flue gas desulfurization tower according to claim 1, characterized in that: The exhaust mechanism (2) includes a first exhaust pipe (22) fixedly connected to the top of the desulfurization tower body (1), the first exhaust pipe (22) is fixedly connected to the main pipe (21), the middle of the main pipe (21) is fixedly connected to a second exhaust pipe (23), and the end of the second exhaust pipe (23) away from the main pipe (21) is fixedly connected to the rear side of the middle of the desulfurization tower body (1).
3. The catalytic flue gas desulfurization tower according to claim 1, characterized in that: An air inlet pipe (6) is fixedly installed on the front side of the desulfurization tower body (1). The air inlet pipe (6) includes multiple air inlet manifolds, which are fixedly connected to the middle of the front side of the desulfurization tower body (1).
4. The catalytic flue gas desulfurization tower according to claim 1, characterized in that: The rotating spray assembly (82) includes several sealed rotatable branch pipes (821) that pass through the side wall of the rotating cover (816). Several connecting pipes (823) are uniformly fixedly connected to the bottom of the branch pipes (821). A guide groove (822) is fixedly installed on the inner wall of the connecting pipe (823). The guide groove (822) is used to guide the water flow to form a vortex. A nozzle (826) is sealed and rotatably installed at the bottom of the connecting pipe (823). A linkage shaft (825) is fixedly installed at the center of the bottom surface inside the nozzle (826). A drive fan blade (824) is fixedly installed at the top of the linkage shaft (825). The drive fan blade (824) is located below the guide groove (822).
5. The catalytic flue gas desulfurization tower according to claim 4, characterized in that: The nozzle (826) has several nozzles (827) evenly fixedly installed on the bottom outer wall, several nozzle openings evenly opened on the bottom of the nozzle (826), several cutting blocks (829) evenly installed on the inner wall of the nozzle (826), and several dividing blocks (828) evenly fixedly installed in the upper middle part of the nozzle (826).
6. The catalytic flue gas desulfurization tower according to claim 4, characterized in that: The swing assembly (83) includes a fixing ring (831) fixedly connected to the bottom of the tapered tube (815). A plurality of toothed columns (832) are uniformly fixedly installed on the outer wall of the fixing ring (831). The toothed columns (832) are distributed in two layers, and the toothed columns (832) in the upper and lower layers are staggered. A protective shell (833) for protecting the toothed columns (832) is fixedly installed at the bottom of the rotating cover (816). The top of the protective shell (833) is rotatably connected to the bottom of the tapered tube (815). A plurality of mounting rods (836) rotatably pass through the outer wall of the protective shell (833). The mounting rod (836) corresponds to the diversion pipe (821) one by one. One end of the mounting rod (836) is fixedly sleeved with a gear (835) that meshes with the toothed column (832). The other end of the mounting rod (836) rotates through the protective shell (833) and is fixedly connected to a rotating disk (837). A limit rod is fixedly installed on one side of the rotating disk (837) near the edge. An mounting ring (834) is fixedly sleeved on the outside of the diversion pipe (821). A fixing plate (838) is fixedly installed on the top of the mounting ring (834). A limit groove for the limit rod to slide is opened on the fixing plate (838).
7. A catalytic flue gas desulfurization tower according to claim 1, characterized in that: The single-stage drainage mechanism (9) includes a conical receiving plate (92) fixedly connected inside the desulfurization tower body (1). A drainage pipe (91) is fixedly connected to the center of the bottom of the conical receiving plate (92). The end of the drainage pipe (91) away from the conical receiving plate (92) is fixedly inserted through the rear side of the desulfurization tower body (1). Several connecting holes (93) are evenly opened on the conical receiving plate (92). A fixed pipe (95) is fixedly installed on the top of the conical receiving plate (92) outside the connecting hole (93). The fixed pipe (95) is connected to the connecting hole (93). Two side plates are symmetrically installed on the top of the outer wall of the fixed pipe (95). A sealing cover (94) is hinged between the two side plates. A sealing ring is installed between the sealing cover (94) and the top of the fixed pipe (95). A stop block (96) is fixedly installed on the top of the two side plates.
8. The catalytic flue gas desulfurization tower according to claim 1, characterized in that: The acid storage tank (4) is equipped with a suction pump. The output end of the suction pump is fixedly connected to the liquid inlet pipe (811) through a pipe. The front side of the desulfurization tower body (1) is equipped with an oil separator (3) and a liquid seal tank (5). The oil separator (3) is connected to the drain pipe (91), and the oil separator (3) is connected to the liquid seal tank (5). The bottom of the main pipe (21) is fixedly connected to the original chimney (7) through the exhaust pipe. The inner wall of the independent treatment tank of the desulfurization tower body (1) is equipped with an anti-corrosion lining. The inner wall of the acid storage tank (4) is also equipped with an anti-corrosion lining. The independent treatment tank of the desulfurization tower body (1) is made of concrete or stainless steel.
9. A catalytic flue gas desulfurization tower according to claim 6, characterized in that: The scraping mechanism (15) includes a second mounting plate (151) fixedly installed on one side of the diversion pipe (821). Several second spring telescopic rods (152) are fixedly installed on the second mounting plate (151). A rubber scraper (153) is fixedly installed at the bottom of the multiple second spring telescopic rods (152). A wind turbine blade (13) is rotatably installed at the center of the end face of the diversion pipe (821).
10. A catalytic flue gas desulfurization tower according to claim 6, characterized in that: The comb-tooth unblocking mechanism (14) includes a first mounting plate (141) fixedly installed outside the rotating cover (816), a connecting rod (142) fixedly installed at the bottom of the first mounting plate (141), a first bearing plate (143) fixedly installed at the bottom of the connecting rod (142), a plurality of first spring telescopic rods (145) fixedly passing through the first bearing plate (143), and rubber soft comb teeth (144) installed at the bottom of the output end of the first spring telescopic rod (145).