Ultrahigh-concentration NOx active molecule denitration device and treatment method

Abstract

The invention discloses an ultra-high-concentration NOx active molecule denitration device and a treatment method, and relates to the technical field of tail gas treatment, the ultra-high-concentration NOx active molecule denitration device comprises a first absorption tower, a second absorption tower and a third absorption tower which are arranged on the ground, inner cavities of the three absorption towers are communicated, and two demisters are fixedly arranged at the upper end of the inner cavity of the first absorption tower; an active molecule reactor is fixedly arranged in a communicating pipeline of the second absorption tower and the third absorption tower, a plurality of spraying mechanisms are arranged in the middles of inner cavities of the first absorption tower, the second absorption tower and the third absorption tower, each spraying mechanism comprises a spraying main pipe transversely and fixedly arranged in the inner cavity of the first absorption tower in a penetrating mode, and a plurality of spraying branch pipes are fixedly arranged on the two sides of each spraying main pipe; and spiral nozzles are arranged at the lower ends of the plurality of spraying branch pipes. The problems that untreated tail gas causes harm to human bodies, equipment and the environment, and spraying is uneven, dead corners exist and nozzles are blocked in the process of spraying NOx in the tail gas are solved.

Description

Technical Field

[0001] The present invention relates to the field of tail gas treatment technology, in particular to a method for treating ultra-high concentration NO x Active molecule denitrification device and treatment method. Background Art

[0002] The absorption tower, also known as the spray tower, is the simplest extraction tower. It is a hollow cylinder with a liquid sprayer on the top, which disperses the liquid into fine droplets and allows the gas to contact the droplets in a countercurrent manner for mass transfer.

[0003] At present, some wind tunnels, such as (arc wind tunnels), break down air under high voltage to form plasma. After the test, the plasma cools and recombine to form ultra-high concentration nitrogen oxide tail gas. After the test, the tail gas enters the vacuum spherical tank, which is equipped with a vacuum pump unit. The vacuum pump unit will extract the tail gas entering the vacuum spherical tank in time to maintain the vacuum degree of the vacuum spherical tank. The tail gas extracted from the vacuum pump unit is discharged into the atmosphere through the chimney.

[0004] Since the exhaust gas is not treated at present, it is harmful to human body, equipment and environment. Therefore, it is necessary to treat the NO x The tail gas is systematically treated to make NO x The exhaust gas meets the emission standards, and the conventional exhaust gas NO x The concentration is 400mg / Nm3, which cannot be treated by ordinary denitrification devices. However, this device can x The maximum concentration of the treatment is 120000mg / Nm3, and the commonly used method is to spray NO in the exhaust gas. x During the spraying process, there may be dead corners or uneven spraying, and the nozzle may even be blocked after long-term use. Summary of the invention

[0005] In order to improve the harm of untreated exhaust gas to human body, equipment and environment and to treat NO in the exhaust gas by spraying x During the process, there are problems such as uneven spraying, dead corners and nozzle clogging. This application provides an ultra-high concentration NO x Active molecule denitrification device and treatment method.

[0006] The present application provides an ultra-high concentration of NO x The active molecule denitrification device and treatment method adopt the following technical solutions: An ultra-high concentration of NO xAn active molecule denitrification device comprises a first absorption tower, a second absorption tower, and a third absorption tower which are sequentially arranged side by side and spaced on the ground, and the inner cavities of the first absorption tower, the second absorption tower, and the third absorption tower are interconnected, and the lower parts of the inner cavities of the first absorption tower and the third absorption tower are respectively fixed with synergistic alloy trays, and the upper end of the inner cavity of the first absorption tower is fixed with two demisters which are symmetrically arranged with each other, and the inner cavity of the second absorption tower and the inner cavity of the third absorption tower are connected by an active molecule reactor 111, and the middle parts of the inner cavities of the first absorption tower, the second absorption tower, and the third absorption tower are respectively provided with a plurality of spray mechanisms with the same structure and installation method; The spray mechanism comprises a spray main pipe which is fixedly arranged transversely and penetrates the inner cavity of the first absorption tower, and a plurality of spray branch pipes arranged in an array are fixedly arranged on both sides of the spray main pipe, and spiral nozzles are arranged at the lower ends of the plurality of spray branch pipes; A booster fan connected to the inner cavity of the first absorption tower is fixedly provided at the lower end of the side of the first absorption tower away from the second absorption tower. A plurality of liquid infusion pipes are fixedly connected to one end of the plurality of spray main pipes and the cleaning equipment. A plurality of slurry circulation pumps are respectively provided at the lower ends of the plurality of liquid infusion pipes. The plurality of slurry circulation pumps are connected to the inner cavity of a slurry pool excavated below the ground.

[0007] By adopting the above technical scheme, the inner cavities of the first absorption tower, the second absorption tower and the third absorption tower are interconnected so that the exhaust gas can enter the second absorption tower and the third absorption tower in sequence from the first absorption tower, and efficiencies The alloy trays are respectively arranged at the lower parts of the inner cavities of the first absorption tower and the third absorption tower to evenly distribute the exhaust gas entering the tower and perform preliminary treatment, and then the exhaust gas is sprayed layer by layer through a number of spray mechanisms arranged in the three absorption towers for denitrification and purification, so that the exhaust gas can meet the emission standards that are harmless to the human body and the environment. Since the pressure of the exhaust gas at the outlet of the vacuum pump is relatively low, a booster fan is arranged at the inlet of the first absorption tower to meet the requirement of a maximum exhaust volume of 4 kg / s (11137 m3 / h), and the slurry circulation pump can pump the slurry into the spray mechanism on the upper part of the absorption tower, so that the spray layer evenly covers the cross-section of the absorption tower with the slurry.

[0008] Preferably, a mounting seat fixedly connected to the inner wall of the third absorption tower is fixed between the upper and lower ends of the two demisters, and a plurality of cleaning devices for regularly cleaning the demisters are fixedly penetrated through the middle of the plurality of mounting seats.

[0009] By adopting the above technical solution, the mounting seat can fix the demister and the cleaning equipment, and at the same time support the demister and the cleaning equipment, thereby enabling the demister and the cleaning equipment to work normally.

[0010] Preferably, the spray mechanism also includes a water storage tank fixedly arranged on the side wall of the first absorption tower, a hydro-turbine generator is fixedly arranged at the lower end of the water storage tank, a three-way valve fixedly arranged on one side of the hydro-turbine generator and fixedly arranged on the spray main pipe, a micro water pump is fixedly arranged at the upper end of the water storage tank, a downpipe is fixedly arranged on one side of the micro water pump, a downpipe is fixedly arranged at the lower end of the downpipe, general protective covers fixedly arranged on the inner wall of the first absorption tower are symmetrically arranged on both sides of the downpipe, protective branch covers corresponding to the spray branch pipes are fixedly arranged on one side of the two general protective covers, one end of the protective branch cover is located at the spiral nozzle and is fixedly penetrated by a swivel joint fixedly connected to the spray branch pipe, and the lower end of the swivel joint is fixedly connected to the spiral nozzle.

[0011] By adopting the above technical solution, the water storage tank can store the industrial water that drives the hydro-generator, and pump the water to the lower nozzle for spraying through a micro water pump and a downpipe. At the same time, the main protective cover and the protective support cover can support and protect the rotating joint and the rotating nozzle to prevent the internal structure from being eroded.

[0012] Preferably, a plurality of double-groove pulleys and a plurality of single-groove pulleys are rotatably arranged in the inner cavities of the two main protective covers and the plurality of protective support covers respectively, the plurality of double-groove pulleys are positioned opposite to the plurality of single-groove pulleys, and transmission belts are slidably connected in the grooves on the outer annular surfaces of the plurality of double-groove pulleys and the plurality of single-groove pulleys.

[0013] By adopting the above technical solution, the double-groove pulley and the single-groove pulley are connected to each other through a transmission belt to achieve synchronization, and can cooperate with each other to drive the rotating spray head to perform rotary spraying.

[0014] Preferably, the inner cavity of the hydro-turbine generator is provided with a hydro-turbine blade, a transmission shaft which movably passes through the hydro-turbine generator is fixedly provided in the middle of one side of the hydro-turbine blade, a first bevel gear is fixedly provided at the end of the transmission shaft away from the hydro-turbine blade, a second bevel gear is meshedly provided at the lower end of the first bevel gear, a single-groove pulley is fixedly provided at the lower end of the second bevel gear, a transmission belt is slidably provided in the outer groove of the single-groove pulley, a three-groove pulley rotatably provided in the inner cavity of the general protective cover is rotatably provided on the end of the transmission belt away from the single-groove pulley, the three-groove pulley is rotatably connected to the double-groove pulley rotatably provided in another general protective cover through a transmission belt slidingly connected in the outer groove of the lower end.

[0015] By adopting the above technical solution, a transmission shaft and a first gear are arranged on the water wheel blades, so that the water wheel blades act as a power source to drive the transmission shaft and the first gear to rotate under the impact of water flow, and then drive the second gear and the single pulley to rotate synchronously, so that the power is transmitted to the three-groove pulley and the double-groove pulley arranged in the two main protective covers through the transmission belt, so that the three-groove pulley and the double-groove pulley can achieve synchronous movement.

[0016] Preferably, the down pipe and the water outlet of the turbine generator are both fixedly provided with a one-way isolation valve, and two vertical slide grooves symmetrically arranged are provided on the side wall of the inner cavity of the one-way isolation valve, a first spring is fixedly provided at the bottom of the vertical slide groove, and a first limit rod is fixedly provided at the upper end of the two first springs, and a T-shaped plug is fixedly provided in the middle of the first limit rod and is slidably arranged with the inner wall of the one-way isolation valve.

[0017] By adopting the above technical solution, the one-way isolation valve limits the T-type plug through the vertical slide groove, the first spring and the first limiting rod arranged inside the one-way isolation valve, so that the T-type plug opens under the impact of water flow but will not separate from the one-way isolation valve, and can return to its original position when the impact of water flow is lost, thereby achieving the effect of unidirectional water flow.

[0018] Preferably, a second spring is fixedly provided at the lower end of the inner cavity of the spiral spray head, a pin is slidably provided at the middle of the second spring and is plugged into the water outlet at the bottom of the spiral spray head, a water guide cap fixedly provided at the upper part of the pin and connected to the second spring, and two second limit rods are symmetrically arranged on both sides of the water guide cap and slidably arranged with the inner cavity of the spiral spray head.

[0019] By adopting the above technical solution, a second spring is arranged inside the spiral nozzle, which can compress the second spring and push the water guide cap under the action of the increased centrifugal force and water flow impact during the accelerated rotation of the spiral nozzle, thereby pushing the needle to clean the lower water outlet of the spiral nozzle.

[0020] Preferably, a plurality of spiral nozzles which are symmetrical and spaced apart are fixedly provided at the lower end of the lower nozzle pipe, and the inner cavities of the plurality of spiral nozzles are connected with the inner cavity of the lower nozzle pipe.

[0021] By adopting the above technical solution, the spiral nozzle arranged at the lower part of the lower nozzle can supplement the spraying at the dead corners in the middle that cannot be sprayed, thereby increasing the spraying effect.

[0022] Preferably, an energy storage box is fixedly provided on the side of the water storage tank away from the sewer pipe, and the energy storage box is respectively connected to the micro water pump and the hydro-generator.

[0023] By adopting the above technical solution, the energy storage box can store and convert the electricity generated by the hydro-generator, and then drive the micro water pump to work, thereby achieving the effect of reducing energy consumption.

[0024] An ultra-high concentration of NO x The treatment method of the active molecule denitrification device comprises the following steps: S01, the tail gas enters the first absorption tower, the second absorption tower, and the third absorption tower in sequence through the booster fan, and first passes through the synergistic alloy tray and several layers of spray mechanisms from the bottom of the first absorption tower. The flue gas comes out from the top of the first absorption tower and then enters the second absorption tower from the top of the second absorption tower. In the second absorption tower, it passes through several layers of spray mechanisms from top to bottom in sequence. The flue gas comes out from the bottom of the second absorption tower, passes through the active molecule reactor set at the entrance of the third absorption tower to complete the active molecule denitrification, and then enters the third absorption tower. It passes through the synergistic alloy tray and several layers of spray mechanisms from bottom to top in sequence. The clean flue gas that has completed the purification treatment is finally defogged by the flat-plate demister at the top of the #absorption tower and discharged from the chimney at the top of the tower; S02, the spray mechanism extracts the liquid in the slurry pool through several slurry circulation pumps arranged on one side of the second absorption tower, and then transports it to the spray main pipe and the hydro-turbine generator through the liquid delivery pipeline, and sprays it through the spray branch pipe and the spiral nozzle. At the same time, the liquid in the hydro-turbine generator flows into the water storage tank and is pumped out by the micro water pump, and transported to the lower spray pipe through the lower water pipe, and then sprayed out through the spiral nozzle; S03. The turbine blades in the hydro-turbine generator drive the first bevel gear and the second bevel gear to rotate under the impact of water flow, and then drive the single-groove pulley, the three-groove pulley, the double-groove pulley and the transmission belt to rotate synchronously, thereby driving the spiral nozzle to rotate and spray, and by increasing the impact of water flow on the turbine blades, the rotation of the turbine blades is accelerated, and then the single-groove pulley, the three-groove pulley, the double-groove pulley, the transmission belt and the spiral nozzle are accelerated to rotate, so that the needle is pushed to clean the nozzle of the spiral nozzle under the action of water flow and centrifugal force.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. Use the synergistic alloy tray installed at the bottom of the first absorption tower and the third absorption tower to make the tail gas enter the tower evenly, so as to achieve the NO x The system absorbs NO efficiently, and then sprays alkali solution through five spray layers composed of spray mechanisms set inside the first absorption tower, the second absorption tower, and the third absorption tower to deeply remove the active molecules in the flue gas. Finally, the clean flue gas that has been purified is defogged by the flat-plate demister set on the top of the third absorption tower and then discharged from the chimney on the top of the tower, achieving ultra-high concentration NO x Conversion of tail gas from gas phase to liquid nitrogen-containing compounds; 2. With the interaction of the water turbine generator, the energy storage box, and the micro water pump, after the slurry circulation pump stops supplying water and spraying due to abnormality, the water in the water storage tank can be drawn and sprayed through the lower spray pipe and the spiral nozzle arranged on the lower spray pipe. Under normal circumstances, the places where the spiral nozzle arranged under the spray branch pipe cannot spray can be sprayed. At the same time, the water turbine blades drive the first bevel gear, the second bevel gear, the single-groove pulley, the three-groove pulley, the double-groove pulley, and the transmission belt to rotate, thereby driving the spiral nozzle to rotate, thereby increasing the spraying range; 3. By increasing the water supply of the slurry circulation pump, the rotation speed of the water wheel blades is increased, thereby making the spiral nozzle rotate faster, thereby generating a centrifugal force that can cooperate with the impact of the water flow to push the water guide cap and the pin to overcome the reverse thrust of the second spring, so that the pin can be inserted into the hole of the lower nozzle of the spiral nozzle for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of this application; Figure 2 This is a cross-sectional view of the tower structure of this application; Figure 3 This is the demister location distribution map of this application; Figure 4 This is a cross-sectional view of the spray mechanism position of this application; Figure 5 This is an overall schematic diagram of the spray mechanism of this application; Figure 6 This is a partial structural cross-sectional view of the spray mechanism of the present application; Figure 7 This is an enlarged view of the structure of the spiral nozzle rotation transmission of the present application; Figure 8 This is an enlarged view of the internal cleaning structure of the spiral nozzle of the present application; Fig. 9 This is an enlarged view of the internal structure of the one-way isolation valve of the present application; Fig.10 This is a location diagram of the active molecule reactor of this application.

[0027] Reference numerals: 100, first absorption tower; 101, second absorption tower; 102, third absorption tower; 103, demister; 104, cleaning equipment; 105, mounting base; 106, liquid delivery pipeline; 107, booster fan; 108, slurry circulation pump; 109, slurry pool; 110, synergistic alloy tray; 111, active molecule reactor; 200, spray mechanism; 201, spray main pipe; 202, spray branch pipe; 203, spiral nozzle; 204, water storage tank; 205, hydroelectric generator; 206, micro water pump; 207, energy storage box; 208, three-way valve; 209, downpipe; 210, transmission shaft; 211, first helical gear; 212, downspout; 213, rotary joint; 214, water wheel blade; 215, second helical gear Wheel; 216, single-groove pulley; 217, three-groove pulley; 218, double-groove pulley; 219, transmission belt; 220, one-way isolation valve; 221, vertical slide; 222, first spring; 223, first limit rod; 224, T-type plug; 225, second spring; 226, water guide cap; 227, pin; 228, second limit rod; 229, main protective cover; 230, protective support cover. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-Figure 10 This application is described in further detail.

[0029] The present application discloses an ultra-high concentration NO x Active molecule denitrification device and treatment method.

[0030] Example 1, reference Figure 1-Figure 3 , an ultra-high concentration of NO x The active molecule denitrification device includes three first absorption towers 100, second absorption towers 101, and third absorption towers 102 which are sequentially arranged side by side on the ground, and the inner cavity of the first absorption tower 100 is connected with the inner cavity of the second absorption tower 101 through an upper pipe, and the inner cavity of the second absorption tower 101 is connected with the inner cavity of the third absorption tower 102 through a lower end pipe, and an enhanced alloy tray 110 is fixedly installed on the lower side wall of the inner cavity of the first absorption tower 100 and the third absorption tower 102, and the two enhanced alloy trays 110 have the same structure and are located at the same height, and a flue gas connecting pipe is arranged at the lower end of the inner cavity of the second absorption tower 101 and the lower end of the inner cavity of the third absorption tower 102, and an active molecule reactor 111 for active molecule denitrification is fixedly installed in the inner cavity of the pipe.

[0031] Reference Figure 3A plurality of mounting seats 105 with the same structure are fixedly arranged on the side wall at the upper end of the inner cavity of the third absorption tower 102, and the plurality of mounting seats 105 are spaced apart from each other, and two demisters 103 with the same structure are fixedly arranged between the plurality of mounting seats 105, and the two demisters 103 are symmetrical to each other, and a plurality of cleaning devices 104 with the same structure are fixedly penetrated in the middle of the plurality of mounting seats 105, and one end of the plurality of cleaning devices 104 are fixedly connected to the infusion pipeline 106, and the cleaning devices 104 are connected to the inner cavity of the infusion pipeline 106, so that the demister 103 can be cleaned regularly.

[0032] Reference Figure 2 , Figure 4 , Figure 5 In the middle of the inner cavity of the first absorption tower 100, the second absorption tower 101 and the third absorption tower 102, a plurality of spray mechanisms 200 arranged in a vertical array are respectively arranged, and the plurality of spray mechanisms 200 are the same in structure and installation method, and the plurality of spray mechanisms 200 include a plurality of spray mother pipes 201 fixedly penetrating the side walls of the inner cavity of the first absorption tower 100, the second absorption tower 101 and the third absorption tower 102, and the plurality of spray mother pipes 201 are horizontally arranged in the middle of the inner cavity of the first absorption tower 100, the second absorption tower 101 and the third absorption tower 102, and a plurality of spray branch pipes 202 are fixedly arranged on both sides of the plurality of spray mother pipes 201, and the plurality of spray branch pipes 202 are arranged in an array at intervals, and spiral nozzles 203 are arranged at the lower ends of the plurality of spray branch pipes 202, and the plurality of spiral nozzles 203 are evenly distributed and are the same in structure and installation method.

[0033] Reference Figure 1 , Figure 2 A booster fan 107 is fixedly installed at the lower end of the first absorption tower 100 and on a side away from the second absorption tower 101, and the inner cavity of the booster fan 107 is interconnected with the inner cavity of the first absorption tower 100, and a plurality of liquid infusion pipes 106 are arranged on one side of the first absorption tower 100, the second absorption tower 101, and the third absorption tower 102, and the plurality of liquid infusion pipes 106 are respectively fixedly connected to one end of the spray mother pipe 201 and the cleaning equipment 104 and the inner cavities are interconnected, and the lower ends of the plurality of liquid infusion pipes 106 are respectively fixedly connected to a plurality of slurry circulation pumps 108 fixedly installed on the upper part of the slurry pool 109, and the plurality of slurry circulation pumps 108 are interconnected with the inner cavity of the slurry pool 109 excavated below the ground.

[0034] The maximum inlet flue gas volume of the first absorption tower 100, the second absorption tower 101 and the third absorption tower 102 is: 11137 m3 / h (operating condition), and the shells of the first absorption tower 100, the second absorption tower 101 and the third absorption tower 102 are all made of 304 / carbon steel composite plate, and the inner surface thereof shall be treated with glass flake corrosion protection. The first absorption tower 100 and the second absorption tower 101 have a diameter of 2.4m and a height of 20m; and the third absorption tower 102 has a diameter of 2.4m and a total height of 30m.

[0035] The spray mother pipes 201 and spiral nozzles 203 in the plurality of spray mechanisms 200 are distributed layer by layer and cooperate with each other to make the slurry evenly distributed in the absorption tower, and the flow rate flowing through each spray layer is equal. The spiral nozzles 203 are optimally arranged to make the spraying on the cross section of the absorption tower almost completely uniform. The optimal number of spray mechanisms 200 set in each absorption tower is 5 layers. The spray mother pipes 201, spray branch pipes 202 and spiral nozzles 203 regularly distributed on the spray branch pipes 202 in each layer of the spray mechanism 200 can all be made of 2205 stainless steel.

[0036] The demister 103 is used to collect the entrained larger water droplets under all operating conditions of the absorption tower, and the two demisters 103 installed in the third absorption tower 102 are divided into two layers according to the primary demister and the secondary demister, and both use the 2-stage plate demister 103 of Wuxi Changxi and Berkeley, which is made of enhanced PP material, and the flushing accessory cleaning equipment 104 is made of the same material. The demister 103 is a corrugated baffle. When the flue gas flows through the demister 103, the droplets remain on the baffle due to inertia, thereby playing a role in demisting. Since the retained droplets also contain a small amount of solid matter or crystals, there is a risk of scaling on the baffle, so a regularly operated cleaning equipment 104 is set, including a main pipe and a high-pressure nozzle for flushing the demister 103, and the flushing medium uses process water.

[0037] According to experimental calculations, the denitration efficiency increases with the increase of the residence time of the flue gas in the absorption tower. When the liquid-gas ratio in the tower is 30 L / m3, the residence time is 45s, and the pH is 11, the denitration efficiency can reach 95.5%. After exceeding 45s, the promotion effect on the denitration efficiency is weak. Taking into account the height of the first absorption tower 100, the second absorption tower 101 and the third absorption tower 102, the uniformity of the flow field in the tower and the flow rate in the tower, the diameter of the first absorption tower 100, the second absorption tower 101 and the third absorption tower 102 in the spray area where the spray mechanism 200 is set is 2.4m.

[0038] The exhaust gas velocity through the absorption tower is designed to be 0.68 m / s (4kg / s), ensuring that the total effective residence time of the three towers is not less than 45 s. According to the test tower liquid-gas ratio of 30 L / m3, the absorption zone height is 10m, the spray volume of each tower is 330m³ / h, and 6 nozzles are arranged on each floor. The flow rate of each nozzle is calculated to be 12 m³ / h. The flow rate of 200 layers of a single-layer spray mechanism is 12x6=72m³ / h. A total of 15 layers of spray mechanisms are set up in 3 towers, and the total circulation volume is 72x15=1080 m³ / h.

[0039] According to the pump settings, the pump flow rates of 432 m³ / h and 648 m³ / h are selected. At the same time, the experiment found that in an alkaline environment of the spray absorption liquid, the effect of pH on the denitrification efficiency is small. The pH of the spray absorption liquid is designed to be ≥8. For a single treatment of 581 kg NOx, 581×1.22×1.1=780 kg of KOH is required. Three operations a day require 780×3=2340 kg of KOH, with a solubility of 6 g / 100 g (pH=14). 39 tons of water are required, and the operating pool water volume is 39×1.3=50.7 tons. The diameter of the circulating pool in the tower is 3 m, the height is 3 m, and the effective volume is 63 m³.

[0040] A booster fan 107 is arranged on one side of the first absorption tower 100 to overcome the resistance of the flue gas system. The booster fan 107 can be a centrifugal fan, and the outer shell is made of stainless steel. Its specifications and model are: N=15kW Q=15000m3 / h P=2500Pa. Four slurry circulation pumps 108 are installed above the slurry pool 109, 2 for use and 2 for backup.

[0041] The design requirement of the circulation system is to make the spray layer arrangement composed of the spray mechanism 200 reach the required spray slurry coverage rate, so that the absorption slurry is fully in contact with the flue gas, thereby ensuring that the required pollutant removal efficiency is reliably achieved under an appropriate liquid-gas ratio. The slurry circulation pump 108 can be a horizontal centrifugal pump, and its specifications and models are: circulation pump A: Q=648m3 / h, H=21.5m (ultimately determined by the nozzle pressure); circulation pump B: Q=648m3 / h, H=21.5m (ultimately determined by the nozzle pressure); circulation pump C: Q=432m3 / h, H=25.5m (ultimately determined by the nozzle pressure); circulation pump D: Q=432m3 / h, H=25.5m (ultimately determined by the nozzle pressure).

[0042] The active molecule reactor 111 uses a tubular generator and is controlled by PLC. The active molecule reactor 111 has a production capacity of 35kg / h and an ozone concentration of 125mg / L. The internal cooling water of the active molecule reactor 111 uses softened water, and the external cooling water uses process water. The single process cooling water volume is 70m³ / h.

[0043] Based on the previous analysis of different ultra-high concentration NO x The laboratory research and field test of tail gas spray absorption, drawing on the design experience of power plant desulfurization tower, designed three absorption towers (such as Figure 1 As shown in FIG. 1 ), each tower is provided with five spray layers composed of a spray mechanism 200, and an enhanced alloy tray 110 is installed at the bottom of the first absorption tower 100 and the third absorption tower 102, so that the tail gas enters the tower evenly, achieving NO in the tail gas. x Highly absorbent.

[0044] Reference Figure 2 , Figure 4-Figure 10 , and the spray mechanism 200 is fixedly provided with several water storage tanks 204 on the side walls of the first absorption tower 100, the second absorption tower 101, and the third absorption tower 102, and the several water storage tanks 204 have the same structure, and a hydro-generator 205 is fixedly provided at the lower end of each water storage tank 204, and a three-way valve 208 is fixedly provided on one side of the hydro-generator 205, and the two ends of the three-way valve 208 are respectively fixedly connected to the spray mother pipe 201 and the infusion pipeline 106, and a micro water pump 206 is fixedly provided at the upper end of the water storage tank 204, and the water storage tank 204 is connected with the inner cavity of the micro water pump 206, and a downpipe 209 is fixedly provided on one side of the water outlet of the micro water pump 206, and a one-way isolation valve 220 is fixedly provided at the connection between the downpipe 209 and the micro water pump 206, and a one-way isolation valve 220 with the same structure is fixedly provided at the upper water outlet where the hydro-generator 205 extends into the water storage tank 204.

[0045] Reference Figure 2 , Figure 4-Figure 10 Two vertical slide grooves 221 with the same structure are opened on the inner cavity side wall of the one-way isolation valve 220, and the two vertical slide grooves 221 are symmetrical to each other and are on the same axis, and the bottom surfaces of the two vertical slide grooves 221 are fixedly connected to the lower ends of the two first springs 222, and the upper ends of the two first springs 222 are fixedly connected to the two ends of the first limiting rod 223, and the middle part of the first limiting rod 223 is fixedly penetrated through the lower end of the T-shaped plug 224, and the T-shaped plug 224 is slidably set on the inner wall of the one-way isolation valve 220, and the upper end diameter of the T-shaped plug 224 is consistent with the inner diameter of the one-way isolation valve 220, so that the T-shaped plug 224 can seal the one-way isolation valve 220.

[0046] Reference Figure 2 , Figure 4-Figure 10, and the first water storage tank 204 is fixedly connected to the surface of one side of the energy storage box 207 on the side away from the sewer pipe 209, and the energy storage box 207 is provided with a battery and a micro inverter and is respectively connected to the micro water pump 206 and the hydro-turbine generator 205. In addition to being connected to the energy storage box 207, the micro water pump 206 is also separately provided with a set of lines connected to an external power supply, so that when the power generation of the hydro-turbine generator 205 cannot meet the power generation of the micro water pump 206, an external power supply can be used to supplement it, so that the micro water pump 206 can work normally and save energy.

[0047] Reference Figure 2 , Figure 4-Figure 10 , and the lower end of the down pipe 209 is fixedly connected to one end of the lower nozzle 212, and a plurality of spiral nozzles 203 are fixedly arranged at the lower end of the lower nozzle 212, and the plurality of spiral nozzles 203 are symmetrical and spaced apart from each other, and the inner cavities of the plurality of spiral nozzles 203 are connected to the inner cavity of the lower nozzle 212, thereby realizing spraying at places where the spiral nozzles 203 on the spray branch pipe 202 cannot spray, and two general protective covers 229 with the same structure are symmetrically arranged on both sides of the lower nozzle 212, and both ends of the two general protective covers 229 are connected to the first absorption tower The inner walls on both sides of 100 are fixedly connected, and a plurality of protective support covers 230 are fixedly arranged on the surface of the two main protective covers 229 away from the lower nozzle 212, and the number of the plurality of protective support covers 230 is consistent with the number of the plurality of spray branch pipes 202, and the plurality of protective support covers 230 are respectively located at the lower parts of the plurality of spray branch pipes 202, and a plurality of double-groove pulleys 218 are rotatably arranged in the inner cavity of the two main protective covers 229, and the plurality of double-groove pulleys 218 are connected by a transmission belt 219 in the outer grooves at the upper ends thereof, so that the plurality of double-groove pulleys 218 can be synchronized.

[0048] Reference Figure 2 , Figure 4-Figure 10, and a plurality of single-groove pulleys 216 are rotatably arranged in the inner cavity of the plurality of protective support covers 230, and the plurality of single-groove pulleys 216 correspond to the positions of the spiral nozzles 203, and the plurality of double-groove pulleys 218 are located opposite to the plurality of single-groove pulleys 216, and each set of two opposite double-groove pulleys 218 and the single-groove pulley 216 are located on the same horizontal line, and each set of double-groove pulleys 218 and the single-groove pulley 216 are connected synchronously by a transmission belt 219, and each single-groove pulley 218 corresponding to the spiral nozzle 203 is connected synchronously by a transmission belt 219. A rotary joint 213 is fixedly provided on the inner ring surface of the grooved pulley 216, and an inclined threaded interface is fixedly provided at the rotary interface at the lower end of each rotary joint 213, and these inclined interfaces are respectively connected to the spiral nozzle 203, thereby increasing the spraying coverage area of ​​the spiral nozzle 203, and the upper end of the rotary joint 213 is fixedly penetrated through the protective support cover 230 and is fixedly connected to the spray branch pipe 202, and the inner cavity of the rotary joint 213, the inner cavity of the spray branch pipe 202, and the inner cavity of the spiral nozzle 203 are interconnected.

[0049] Reference Figure 2 , Figure 4-Figure 10 The middle part of the surface of one side of the water wheel blade 214 arranged in the inner cavity of the water wheel generator 205 is fixedly connected with the surface of one end of the transmission shaft 210, and the end of the transmission shaft 210 fixed with the water wheel blade 214 movably penetrates the side cover of the water wheel generator 205, and the penetration position needs to be sealed to prevent water from overflowing, and the end surface of the transmission shaft 210 away from the water wheel blade 214 is fixedly connected with the middle part of the surface of one side of the first bevel gear 211, and the lower end of the first bevel gear 211 is meshed with the second bevel gear 215, and the lower end surface of the second bevel gear 215 A single-groove pulley 216 is fixedly arranged, and is slidably arranged with a transmission belt 219 in the outer groove of the single-groove pulley 216, and the transmission belt 219 is rotatably arranged with a three-groove pulley 217 at the end away from the single-groove pulley 216, and the three-groove pulley 217 is rotatably arranged in the inner cavity of one side of the main protective cover 229 located in the hydro-turbine generator 205, and the three-groove pulley 217 is rotatably connected to the transmission belt 219 slidably connected in the outer groove of the lower end and the double-groove pulley 218 rotatably arranged in another main protective cover 229.

[0050] Reference Figure 2 , Figure 4-Figure 10, and the lower end of the inner cavity of the spiral nozzle 203 is fixedly connected to the lower end of the second spring 225, and the lower end of the second spring 225 is fixed on the inclined side wall of the nozzle at the lower end of the inner cavity of the spiral nozzle 203, so that the second spring 225 will not affect the water flow of the spiral nozzle 203, and a pin 227 with a rough surface is slidably provided in the middle of the second spring 225, and the diameter of the pin 227 is consistent with the diameter of the water nozzle at the bottom of the spiral nozzle 203 and can be inserted into the water nozzle to clean the scale, and the upper surface of the pin 227 is fixedly connected to the middle of the lower surface of the water guide cap 226, and the upper end of the water guide cap 226 is set to a cone so as not to hinder the water flow too much, and the outer side of the lower end surface of the water guide cap 226 is connected to the second spring 2 The upper end of the water guide cap 226 is fixedly connected, and the two sides of the water guide cap 226 are fixedly connected to one end of the second limiting rod 228, and the two second limiting rods 228 are symmetrical to each other and are located on the same axis, and the two ends of the two second limiting rods 228 are respectively slidably set with the inner cavity side walls of the spiral nozzle 203, thereby limiting the water guide cap 226, the pin 227, and the second spring 225, and the elastic force and compression value of the second spring 225 should be greater than the normal water flow impact, but under the centrifugal force generated by the accelerated rotation of the spiral nozzle 203 and the impact of the water flow, the pin 227 can be driven to insert into the lower end water spray hole of the spiral nozzle 203, and the dirt on the water spray outlet of the spiral nozzle 203 can be cleaned through the fur surface set on the outer ring surface of the pin 227.

[0051] It should be noted that the spray main pipe 201, the spray branch pipe 202, the spiral nozzle 203, the hydro-turbine generator 205, the micro-water pump 206, and the energy storage box 207 are all existing mechanisms, and their structural principles are not described in detail here. Among them, the micro-water pump 206 can be selected from the new Weicheng continuous operation micro-high-pressure water pump HSP-TL, and the hydro-turbine generator 205 can be selected from the small water flow generator WTG3T250 type Kinetron hydro-turbine generator 205, but because they are all existing technologies, their structural principles are not described in detail.

[0052] A three-way valve 208 is arranged between the spray mother pipe 201 and the infusion pipe 106, and the three-way valve 208 is interconnected with the hydro-turbine generator 205, so that when the infusion pipe 106 supplies water to the spray mother pipe 201, the water is diverted to the hydro-turbine generator 205 through the three-way valve 208, thereby driving the rotation of the water wheel blades 214 in the hydro-turbine generator 205, thereby achieving the effect of power generation, and the hydro-turbine generator 205 is connected to the energy storage box 207 to store electricity in the energy storage box 207 for use by the micro water pump 206, and the micro water pump 206 is also connected to other power sources, in order to prevent the electricity generated by the hydro-turbine generator 205 from possibly failing to guarantee the operation of the micro water pump 206, thereby failing to The water stored in the water storage tank 204 is extracted and transported to the lower nozzle 212 through the downpipe 209 fixedly connected to the micro water pump 206. The one-way isolation valve 220 arranged at the connection between the downpipe 209 and the micro water pump 206 pushes the T-shaped plug 224 away when the micro water pump 206 transports water to the downpipe 209. When no water is transported, the T-shaped plug 224 returns to the one-way isolation valve 220 under the pulling force of the first spring 222 and seals the one-way isolation valve 220. The lower nozzle 212 distributes the water flow to the spiral nozzle 203 arranged at its lower end, thereby realizing supplementary spraying of the position that the spiral nozzle 203 arranged at the lower end of the spray branch pipe 202 cannot spray.

[0053] When the water wheel blades 214 rotate, they can drive the transmission shaft 210 fixed thereto to rotate, and when the transmission shaft 210 rotates, it can drive the first bevel gear 211 to rotate, and when the first bevel gear 211 rotates, it can drive the second bevel gear 215 to rotate, and when the second bevel gear 215 rotates, it will drive the single-groove pulley 216 to rotate, and when the single-groove pulley 216 rotates, it drives the three-groove pulley 217 to rotate synchronously through the transmission belt 219, and when the three-groove pulley 217 rotates, the three transmission belts 219 arranged in its external grooves respectively drive the other double-groove pulleys 218 arranged in the two main protective covers 229 to rotate, and then the rotation of the double-groove pulley 218 drives the single-groove pulley 216 arranged inside the protective support cover 230 to rotate synchronously, thereby driving the spiral nozzle 203 to rotate and spray through the rotating joint 213.

[0054] The present invention relates to an ultra-high concentration NO xThe implementation principle of the active molecule denitrification device is as follows: the exhaust gas is drawn out from the chimney entrance and enters the first absorption tower 100, the second absorption tower 101, and the third absorption tower 102 in turn, and independent slurry pools 109 are respectively arranged underground at the bottom of the first absorption tower 100, the second absorption tower 101, and the third absorption tower 102, each slurry pool 109 has a diameter of 3m, and the bottom of the inner cavity of the first absorption tower 100, the third absorption tower 102, and the demister 103 are interconnected with the corresponding slurry pool 109 inner cavity, and four slurry circulation pumps 108 are arranged on the ground on one side of the lower end of the second absorption tower 101, and the four slurry circulation pumps 108 are 2 for use and 2 for standby, and the slurry circulation pump 108 draws the slurry from the slurry pool 109 under the second absorption tower 101 and pumps it into the spray layer composed of the spray mechanism 200 inside the first absorption tower 100, the second absorption tower 101, and the third absorption tower 102.

[0055] First, after being pressurized by the booster fan 107, the exhaust gas enters the bottom of the first absorption tower 100, and then passes through the first-stage enhanced alloy tray 110 from bottom to top in the first absorption tower 100, and then passes through five spray layers composed of the spray mechanism 200, and the spray mother pipe 201 in the spray mechanism 200 is connected with the infusion pipeline 106 and the inner cavity of the slurry circulation pump 108, and then the slurry circulation pump 108 extracts the slurry from the slurry pool 109 under the second absorption tower 101 and injects it into the infusion pipeline 106 and the spray mother pipe 201, and then the flue gas in the inner cavity of the first absorption tower 100 is sprayed through a plurality of spray branches 202 arranged on both sides of the spray mother pipe 201 and a spiral nozzle 203 arranged at the lower end of the spray branch pipe 202, and at the same time, the spiral nozzle 203 evenly covers the side wall of the first absorption tower 100, thereby realizing oxidation removal of NOx in the flue gas.

[0056] After reaching the top of the first absorption tower 100, the flue gas is sucked into the top of the inner cavity of the second absorption tower 101, and then passes through the five spray layers composed of the spray mechanism 200 from top to bottom in the inner cavity of the second absorption tower 101. The structure and operation mode of the five spray layers composed of the spray mechanism 200 in the second absorption tower 101 are the same as those of the five spray layers composed of the spray mechanism 200 in the first absorption tower 100. However, the five spray layers composed of the spray mechanism 200 in the third absorption tower 102 are also The same setting is used, and then the flue gas comes out from the bottom of the second absorption tower 101, passes through the active molecule reactor 111 set at the entrance of the third absorption tower 102 to complete the active molecule denitrification, and then enters the third absorption tower 102, and passes through the second-stage synergistic alloy tray 110 from bottom to top, and then passes through the five-layer spray layer composed of the spray mechanism 200. Finally, the clean flue gas that has completed the purification treatment is defogged by the flat-plate demister 103 set at the top of the third absorption tower 102 and is discharged from the chimney on the top of the tower.

[0057] The slurry sprayed by the spray layer composed of the spray mechanism 200 is finally collected in the slurry pool at the bottom of each absorption tower, and finally flows to the slurry pool 109 of the second absorption tower 101 through the connecting pipe, and then is pumped back to the second absorption tower 101, the first absorption tower 100, and the third absorption tower 102 through the slurry circulation pump 108 for recycling.

[0058] The slurry pool 109 at the bottom of the first absorption tower 100, the second absorption tower 101, and the third absorption tower 102 needs to maintain a certain pH value (pH ≥ 8) to ensure that a high NOx removal rate can be achieved. After a period of reaction, the KOH content in the slurry decreases, nitrates and nitrites are formed, and the slurry pH decreases. At this time, fresh KOH solution needs to be added to increase the pH value in the slurry pool 109. The enriched by-products (nitrate solution) after the reaction are finally pumped into the waste liquid pool for storage.

[0059] During this process, when the infusion pipeline 106 supplies water to the spray main pipe 201, the water is diverted to the hydro-turbine generator 205 through the three-way valve 208, thereby driving the rotation of the water wheel blades 214 in the hydro-turbine generator 205, and then storing the electricity in the energy storage box 207 for use by the micro water pump 206. In order to prevent the electricity generated by the hydro-turbine generator 205 from failing to guarantee the operation of the micro water pump 206, other power sources are also connected to the micro water pump 206 for assistance, thereby ensuring that the micro water pump 206 can draw the water stored in the water storage tank 204 into the lower nozzle 212 through the lower water pipe 209, and the lower nozzle 212 distributes the water flow to the spiral nozzle 203 set at its lower end, thereby realizing supplementary spraying of the position that the spiral nozzle 203 set at the lower end of the spray branch pipe 202 cannot spray.

[0060] When the water wheel blades 214 rotate, they will drive the transmission shaft 210 to rotate, and then drive the first bevel gear 211 to rotate synchronously. When the first bevel gear 211 rotates, it can drive the second bevel gear 215 to rotate, and then drive the single-groove pulley 216 to rotate synchronously, so that the three-groove pulley 217, the transmission belt 219 and the other double-groove pulleys 218 set in the two main protective covers 229 are driven to rotate synchronously through the transmission belt 219, and then the double-groove pulley 218 drives the single-groove pulley 216 set inside the protective support cover 230 to rotate synchronously, so that the rotary joint 213 and the spiral nozzle 203 can rotate and spray.

[0061] By increasing the pressure of the water flow in the hydro-turbine generator 205, the rotation speed of the water-turbine blades 214 is accelerated, and the first bevel gear 211, the second bevel gear 215, the three-groove pulley 217, the double-groove pulley 218, the single-groove pulley 216, and the spiral nozzle 203 are accelerated to rotate. The centrifugal force generated by the accelerated rotation of the spiral nozzle 203, combined with the impact of the water flow, will drive the pin 227 to be inserted into the water spray hole at the lower end of the spiral nozzle 203, and the dirt on the water spray outlet of the spiral nozzle 203 will be cleaned by the fur surface provided on the outer ring surface of the pin 227.

[0062] Example 2, an ultra-high concentration of NO x The treatment method of the active molecule denitrification device comprises the following steps: Reference Figure 1-Figure 10 , S01, the booster fan 107 sends the exhaust gas into the lower part of the inner cavity of the first absorption tower 100 in sequence, and then flows out from the top of the first absorption tower 100 to the top of the second absorption tower 101, flows into from the top of the second absorption tower 101 and flows out from the lower part of the second absorption tower 101 to the lower part of the inner cavity of the third absorption tower 102, and then flows into from the lower part of the third absorption tower 102 and is discharged from the upper part of the third absorption tower 102. When the flue gas flows into the bottom of the first absorption tower 100, it first passes through several holes in the synergistic alloy tray 110 and evenly distributes the flue gas in the first absorption tower 100, and then passes through the five-layer spray mechanism 200 arranged at intervals in the inner cavity of the first absorption tower 100, and then the flue gas comes out from the top of the first absorption tower 100 and enters the top of the second absorption tower 101, and passes through the interval array from top to bottom in the second absorption tower 101 in sequence. The flue gas then flows out from the bottom channel of the second absorption tower 101, and after completing the denitration of the active molecules in the flue gas through the active molecule reactor 111 arranged in the inlet pipe of the third absorption tower 102, it enters the bottom of the inner cavity of the third absorption tower 102, and passes through the dispersed flue gas treatment of the synergistic alloy tray 110 in sequence from the lower end of the inner cavity of the third absorption tower 102, so that the flue gas is evenly distributed in the inner cavity of the third absorption tower 102, and then passes upward through the five-layer array of spray mechanisms 200 arranged in the inner cavity of the third absorption tower 102 at intervals for the final denitration treatment. Finally, the clean flue gas that has completed the purification treatment passes through the double-row flat-plate demister 103 arranged on the top of the third absorption tower 102 for the final demisting, and is discharged into the atmosphere through the chimney on the top of the third absorption tower 102.

[0063] S02, and the liquid stored in the slurry pool 109 at the bottom of the three absorption towers is extracted by a plurality of slurry circulation pumps 108 arranged on one side of the second absorption tower 101, and is transported to the spraying main pipe 201 in the spraying mechanism 200 through a plurality of liquid delivery pipes 106 fixedly connected and communicated with the slurry circulation pumps 108, and is transported to the hydro-generator 205 through a three-way valve 208 arranged at the connection between the liquid delivery pipe 106 and the spraying main pipe 201, and then is transported to the hydro-generator 205 through a plurality of mutually spaced The distributed spray branch pipes 202 and the spiral spray heads 203 arranged at the lower end of the spray branch pipes 202 spray the inside of the tower, and at the same time, the liquid in the water turbine generator 205 flows into the water storage tank 204 for storage, and the micro water pump 206 arranged at the upper end of the water storage tank 204 pumps the water in the water storage tank 204 out and transports it to the downpipe 209, and then transports it to the downspout 212 through the downspout 209, and sprays it out through the spiral spray heads 203 arranged in an array at the lower end of the downspout 212; S03. Under the impact of water flow, the water wheel blades 214 in the hydro-generator 205 will rotate, and the rotation of the water wheel blades 214 can drive the first bevel gear 211 to rotate, and then drive the second bevel gear 215 meshing with the first bevel gear 211 to rotate, so that through a plurality of transmission belts 219, a plurality of single-groove pulleys 216, three-groove pulleys 217, and double-groove pulleys 218 respectively arranged in the inner cavity of the main protective cover 229 and the protective support cover 230 are driven to rotate synchronously, so that the spiral nozzle 203 is driven to rotate and spray through the rotary joint 213, and the slurry circulation pump 10 8 The pressure is increased to increase the water flow in the infusion pipe 106, and the increased water flow impacts the water wheel blades 214 in the hydro-turbine generator 205, so that the water wheel blades 214 rotate faster. While the water wheel blades 214 rotate faster, they can drive the single-groove pulley 216, the three-groove pulley 217, the double-groove pulley 218 and the spiral nozzle 203 to rotate faster through the transmission belt 219, so that the centrifugal force of the water flow and the accelerated rotation of the spiral nozzle 203 pushes the pin 227 located in the middle of the inner cavity of the spiral nozzle 203 to clean the nozzle at the lower end of the inner cavity of the spiral nozzle 203.

[0064] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. An ultra-high concentration of NO x Active molecule denitrification device, characterized by: The invention comprises a first absorption tower (100), a second absorption tower (101), and a third absorption tower (102) which are arranged side by side and spaced apart on the ground in sequence, and the inner cavities of the first absorption tower (100), the second absorption tower (101), and the third absorption tower (102) are connected to each other, a synergistic alloy tray (110) is fixedly provided at the lower part of the inner cavity of the first absorption tower (100) and the third absorption tower (102), two demisters (103) which are symmetrically arranged are fixedly provided at the upper end of the inner cavity of the third absorption tower (102), an active molecule reactor (111) is fixedly provided in a pipeline connecting the inner cavity of the second absorption tower (101) and the inner cavity of the third absorption tower (102), and a plurality of spray mechanisms (200) having the same structure and installation method are respectively provided in the middle of the inner cavity of the first absorption tower (100), the second absorption tower (101), and the third absorption tower (102); The spray mechanism (200) comprises a spray main pipe (201) which is fixedly arranged transversely and penetrates the inner cavity of the first absorption tower (100), a plurality of spray branch pipes (202) arranged in an array are fixedly arranged on both sides of the spray main pipe (201), and spiral spray heads (203) are arranged at the lower ends of the plurality of spray branch pipes (202); A booster fan (107) connected to the inner cavity of the first absorption tower (100) is fixedly provided at the lower end of the first absorption tower (100) on the side away from the second absorption tower (101); a plurality of liquid delivery pipes (106) are fixedly connected to one end of the plurality of spray main pipes (201) and the cleaning equipment (104); a plurality of slurry circulation pumps (108) are respectively provided at the lower ends of the plurality of liquid delivery pipes (106); and the plurality of slurry circulation pumps (108) are connected to the inner cavity of a slurry pool (109) excavated below the ground.

2. An ultra-high concentration NO according to claim 1 x Active molecule denitrification device, characterized by: A mounting seat (105) fixedly connected to the inner wall of the third absorption tower (102) is fixedly disposed between the upper and lower ends of the two demisters (103), and a plurality of cleaning devices (104) for regularly cleaning the demisters (103) are fixedly disposed through the middle of the plurality of mounting seats (105).

3. An ultra-high concentration NO according to claim 1 x Active molecule denitrification device, characterized by: The spray mechanism (200) further comprises a water storage tank (204) fixedly mounted on the side wall of the first absorption tower (100); a water turbine generator (205) is fixedly mounted at the lower end of the water storage tank (204); a three-way valve (208) fixedly mounted on one side of the water turbine generator (205) and connected to the spray main pipe (201); a micro water pump (206) is fixedly mounted on the upper end of the water storage tank (204); a water down pipe (209) is fixedly mounted on one side of the micro water pump (206); and a lower spray pipe is fixedly mounted on the lower end of the water down pipe (209). (212), general protective covers (229) fixedly connected to the inner wall of the first absorption tower (100) are symmetrically arranged on both sides of the lower spray pipe (212), and a protective support cover (230) corresponding to the spray branch pipe (202) is fixedly arranged on one side of the two general protective covers (229), and one end of the protective support cover (230) is located at the spiral spray head (203) and is fixedly penetrated by a rotary joint (213) fixedly connected to the spray branch pipe (202), and the lower end of the rotary joint (213) is fixedly connected to the spiral spray head (203).

4. An ultra-high concentration NO according to claim 3 x Active molecule denitrification device, characterized by: A plurality of double-groove pulleys (218) and a single-groove pulley (216) are rotatably disposed in the inner cavities of the two main protective covers (229) and the plurality of protective support covers (230), the plurality of double-groove pulleys (218) and the plurality of single-groove pulleys (216) are positioned opposite to each other, and a transmission belt (219) is slidably connected in the grooves on the outer annular surfaces of the plurality of double-groove pulleys (218) and the plurality of single-groove pulleys (216).

5. The ultra-high concentration NO according to claim 3 x Active molecule denitrification device, characterized by: The inner cavity of the water turbine generator (205) is provided with a water turbine blade (214); a transmission shaft (210) that movably penetrates the water turbine generator (205) is fixedly provided at the middle of one side of the water turbine blade (214); a first bevel gear (211) is fixedly provided at one end of the transmission shaft (210) away from the water turbine blade (214); a second bevel gear (215) is meshedly provided at the lower end of the first bevel gear (211); a single groove pulley (216) is fixedly provided at the lower end of the second bevel gear (215). ), a transmission belt (219) is slidably disposed in an outer groove of the single-groove pulley (216), and a three-groove pulley (217) rotatably disposed in an inner cavity of a general protective cover (229) is rotatably disposed at one end of the transmission belt (219) away from the single-groove pulley (216), and the three-groove pulley (217) is rotatably connected to a double-groove pulley (218) rotatably disposed in another general protective cover (229) through a sliding connection with the transmission belt (219) in an outer groove at the lower end.

6. The ultra-high concentration NO according to claim 3 x Active molecule denitrification device, characterized by: The down pipe (209) and the water outlet of the hydro-generator (205) are both fixedly provided with a one-way isolation valve (220); two vertical slide grooves (221) symmetrically arranged with each other are provided on the inner cavity side wall of the one-way isolation valve (220); a first spring (222) is fixedly provided at the bottom of the vertical slide groove (221); a first limit rod (223) is fixedly provided at the upper end of the two first springs (222); a T-shaped plug (224) is fixedly provided in the middle of the first limit rod (223) and is slidably arranged with the inner wall of the one-way isolation valve (220).

7. The ultra-high concentration NO according to claim 1 x Active molecule denitrification device, characterized by: A second spring (225) is fixedly disposed at the lower end of the inner cavity of the spiral spray head (203); a pin (227) is slidably disposed in the middle of the second spring (225) and is plugged into the water outlet at the bottom of the spiral spray head (203); a water guide cap (226) is fixedly disposed on the upper part of the pin (227) and is fixedly connected to the second spring (225); and two second limit rods (228) are fixedly disposed on both sides of the water guide cap (226) and are symmetrically disposed and slidably disposed with the inner cavity of the spiral spray head (203).

8. The ultra-high concentration NO according to claim 3 x Active molecule denitrification device, characterized by: A plurality of spiral spray heads (203) which are symmetrical and spaced apart from each other are fixedly disposed at the lower end of the lower spray pipe (212), and the inner cavities of the plurality of spiral spray heads (203) are in communication with the inner cavity of the lower spray pipe (212).

9. The ultra-high concentration NO according to claim 3 x Active molecule denitrification device, characterized by: An energy storage box (207) is fixedly provided on a side of the water storage tank (204) away from the downpipe (209), and the energy storage box (207) is respectively connected to the micro water pump (206) and the water turbine generator (205).

10. An ultra-high concentration of NO x The treatment method of the active molecule denitrification device is characterized by: A device for denitrifying ultra-high concentration NOx active molecules comprising any one of claims 1 to 9, comprising the following steps: S01, the exhaust gas enters the first absorption tower (100), the second absorption tower (101), and the third absorption tower (102) in sequence through the booster fan (107), and first passes through the synergistic alloy tray (110) and several layers of spray mechanisms (200) from the bottom of the first absorption tower (100), and then comes out from the top of the first absorption tower (100) and enters the second absorption tower (101) from the top of the second absorption tower (101), and passes through several layers of spray mechanisms (200) in sequence from top to bottom in the second absorption tower (101). The dry layer spray mechanism (200) is used for the flue gas to come out from the bottom of the second absorption tower (101), pass through the active molecule reactor 111 provided at the entrance of the third absorption tower (102) to complete the active molecule denitration, and then enter the third absorption tower (102), and pass through the synergistic alloy tray (110) and several layers of spray mechanisms (200) from bottom to top in sequence. The clean flue gas that has completed the purification treatment finally passes through the flat plate demister (103) at the top of the third absorption tower (102) for demisting, and then is discharged from the chimney at the top of the tower; S02, the spray mechanism (200) extracts liquid from the slurry pool (109) through a plurality of slurry circulation pumps (108) disposed on one side of the second absorption tower (101), then transports the liquid to the spray main pipe (201) and the hydro-turbine generator (205) through the liquid delivery pipe (106), and sprays the liquid through the spray branch pipe (202) and the spiral spray head (203). At the same time, the liquid in the hydro-turbine generator (205) flows into the water storage tank (204) and is pumped out by the micro water pump (206), and then transported to the lower spray pipe (212) through the lower water pipe (209), and then sprayed out through the spiral spray head (203); S03. The water wheel blades (214) in the water turbine generator (205) drive the first bevel gear (211) and the second bevel gear (215) to rotate under the impact of the water flow, thereby driving the single-groove pulley (216), the three-groove pulley (217), the double-groove pulley (218), and the transmission belt (219) to rotate synchronously, thereby driving the spiral nozzle (203) to perform rotational spraying, and by increasing the impact of the water flow on the water wheel blades (214), the rotation of the water wheel blades (214) is accelerated, thereby driving the single-groove pulley (216), the three-groove pulley (217), the double-groove pulley (218), the transmission belt (219), and the spiral nozzle (203) to rotate faster, so that under the action of the water flow and centrifugal force, the pin (227) is pushed to clean the nozzle of the spiral nozzle (203).

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