A hydrogen peroxide desulfurization device

Abstract

The utility model discloses a kind of hydrogen peroxide desulfurization devices, it is related to flue gas desulfurization technical field, including desulfurization tower, the lower end of the desulfurization tower is equipped with desulfurization liquid circulating tank, the front end of the desulfurization liquid circulating tank is equipped with controller, the upper end of the desulfurization liquid circulating tank is equipped with circulating pump, the liquid inlet end of the circulating pump is fixedly connected with a number of pipes.The utility model, desulfurization tower inside adopts layer staggered spray layer cooperation spiral atomizing nozzle, atomization effect is excellent, while filler layer is collocated gas distributor, the contact area of hydrogen peroxide absorption liquid and flue gas is promoted, improve sulfur dioxide absorption rate;Stirring device in circulating tank avoids that liquid material local concentration is uneven, concentration detector real-time monitoring and linkage external discharge, water replenishment, ensure that reaction environment is stable, effectively avoid the problem of desulfurization efficiency decline caused by concentration fluctuation.

Description

Technical Field

[0001] This utility model relates to the field of flue gas desulfurization technology, and in particular to a hydrogen peroxide desulfurization device. Background Technology

[0002] In industrial production processes, the combustion of fuels such as coal and oil produces a large amount of flue gas containing sulfur dioxide. If directly emitted, it will cause serious environmental pollution such as acid rain. Therefore, flue gas desulfurization is a key link in industrial waste gas treatment.

[0003] However, in existing technologies, the traditional limestone-gypsum wet desulfurization process relies on the reaction between limestone slurry and sulfur dioxide. The desulfurization efficiency is significantly affected by fluctuations in parameters such as slurry pH and reaction temperature, easily leading to insufficient local gas-liquid contact. This results in large fluctuations in desulfurization efficiency, making it difficult to consistently achieve high-efficiency removal. Furthermore, precise control of reaction conditions is challenging. Simultaneously, the gypsum byproduct generated by this process is prone to crystallization and deposition, causing blockages in components such as packing and nozzles within the desulfurization tower. This not only affects reaction stability but also increases the frequency of downtime maintenance. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art and to propose a hydrogen peroxide desulfurization device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hydrogen peroxide desulfurization device, comprising a desulfurization tower, a desulfurization liquid circulation tank installed at the lower end of the desulfurization tower, a controller installed at the front end of the desulfurization liquid circulation tank, a circulation pump installed at the upper end of the desulfurization liquid circulation tank, the inlet end of the circulation pump being fixedly connected to a first pipe, a demister, a spray layer, and a packing layer being installed sequentially from top to bottom inside the desulfurization tower, a hydrogen peroxide storage tank provided on one side of the desulfurization liquid circulation tank, a first connecting pipe being fixedly connected to the outlet end of the circulation pump, a dilution tank provided on one side of the desulfurization liquid circulation tank, a delivery pump installed at the upper end of the dilution tank, a second connecting pipe being fixedly connected to the outlet end of the delivery pump, a second pipe being fixedly connected to the lower opening of the hydrogen peroxide storage tank, and a third pipe being fixedly connected to the inlet end of the delivery pump.

[0006] Preferably, the other end of the first pipe passes through one end of the desulfurization liquid circulation tank and extends into its interior, the other end of the first connecting pipe passes through the outer wall of the desulfurization tower and is fixedly connected to the outer wall of the spray layer, and the circulation pump is electrically connected to the controller.

[0007] Preferably, the other end of the second connecting pipe penetrates the outer wall of the desulfurization tower and is fixedly connected to the outer wall of the spray layer, the other end of the second pipe is fixedly connected to the upper opening of the dilution tank, and the delivery pump is electrically connected to the controller.

[0008] Preferably, a water tank is provided on one side of the desulfurization liquid circulation tank, a humidifier is fixedly connected to the liquid inlet of the desulfurization tower, a water replenishment pump is installed at the upper end of the desulfurization liquid circulation tank, a four-way pipe is fixedly connected to the liquid outlet of the water replenishment pump, a third connecting pipe is fixedly connected to the liquid inlet of the water replenishment pump, and a fourth connecting pipe, a fifth connecting pipe, and a sixth connecting pipe are fixedly connected to the other three liquid outlets of the four-way pipe, respectively.

[0009] Preferably, a portion of the third connecting pipe extends into the interior of the water tank, the other end of the fourth connecting pipe extends through the outer wall of the desulfurization tower and is fixedly connected to the outer wall opening of the demister, a portion of the fifth connecting pipe extends into the interior of the dilution tank, the other end of the sixth connecting pipe is fixedly connected to the liquid inlet of the humidifier, and the water replenishment pump is electrically connected to the controller.

[0010] Preferably, a concentration detector is installed at the upper end of the desulfurization liquid circulation tank, and an external discharge pump is installed on the other side of the desulfurization liquid circulation tank. The inlet end of the external discharge pump is fixedly connected to a No. 4 pipe, and the other end of the No. 4 pipe extends into the interior of the desulfurization liquid circulation tank.

[0011] Preferably, a portion of the concentration detector extends into the interior of the desulfurization liquid circulation tank, and both the concentration detector and the external discharge pump are electrically connected to the controller.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the desulfurization tower adopts a three-layer staggered spray layer with spiral atomizing nozzles, which has excellent atomization effect. At the same time, the packing layer is equipped with a gas distributor to increase the contact area between hydrogen peroxide absorbent and flue gas, thereby improving the sulfur dioxide absorption rate. The stirring device in the circulation tank avoids uneven local concentration of liquid, and the concentration detector monitors in real time and links with external discharge and water replenishment to ensure a stable reaction environment and effectively avoid the problem of desulfurization efficiency decline caused by concentration fluctuations.

[0013] 2. In this utility model, all components in contact with liquid are made of acid-resistant materials, which avoids equipment corrosion problems from the root; the demister is equipped with an automatic flushing system, and regular flushing can prevent liquid residue from scaling and clogging; the liquid inlet of power equipment such as circulating pump and external pump is set at a reasonable height to avoid impurities deposited at the bottom of the pumping tank, and at the same time, the filter of the process water system can intercept external impurities, reducing the clogging failure rate of the entire system. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a hydrogen peroxide desulfurization device proposed in this utility model. Figure 2 This is a front structural diagram of a hydrogen peroxide desulfurization device proposed in this utility model. Figure 3This is a top view of a hydrogen peroxide desulfurization device proposed in this utility model; Figure 4 This is a partial perspective view of a hydrogen peroxide desulfurization device proposed in this utility model.

[0015] Legend: 1. Desulfurization tower; 2. Desulfurization liquid circulation tank; 3. Controller; 4. Circulation pump; 5. Pipe No. 1; 6. Water tank; 7. Concentration detector; 8. Demister; 9. Spray layer; 10. Packing layer; 11. Hydrogen peroxide storage tank; 12. First connecting pipe; 13. Dilution tank; 14. Second connecting pipe; 15. Transfer pump; 16. Pipe No. 2; 17. Pipe No. 3; 18. Four-way pipe; 19. Humidifier; 20. Exhaust pump; 21. Pipe No. 4; 22. Make-up water pump; 23. Third connecting pipe; 24. Fourth connecting pipe; 25. Fifth connecting pipe; 26. Sixth connecting pipe. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this utility model provides a hydrogen peroxide desulfurization device, including a desulfurization tower 1, a desulfurization liquid circulation tank 2 installed at the lower end of the desulfurization tower 1, a controller 3 installed at the front end of the desulfurization liquid circulation tank 2, a circulation pump 4 installed at the upper end of the desulfurization liquid circulation tank 2, and a first connecting pipe 5 fixedly connected to the inlet end of the circulation pump 4. Inside the desulfurization tower 1, from top to bottom, a demister 8, a spray layer 9, and a packing layer 10 are installed sequentially. A hydrogen peroxide storage tank 11 is arranged on one side of the desulfurization liquid circulation tank 2, and a first connecting pipe 12 is fixedly connected to the outlet end of the circulation pump 4. A dilution tank 13 is arranged on one side of the desulfurization liquid circulation tank 2, and a transfer pump 15 is installed at the upper end of the dilution tank 13. The outlet end of 15 is fixedly connected to the second connecting pipe 14, the lower opening of the hydrogen peroxide storage tank 11 is fixedly connected to the second pipe 16, the inlet end of the transfer pump 15 is fixedly connected to the third pipe 17, the other end of the first pipe 5 passes through one end of the desulfurization liquid circulation tank 2 and extends into its interior, the other end of the first connecting pipe 12 passes through the outer wall of the desulfurization tower 1 and is fixedly connected to the outer wall of the spray layer 9, the circulation pump 4 is electrically connected to the controller 3, the other end of the second connecting pipe 14 passes through the outer wall of the desulfurization tower 1 and is fixedly connected to the outer wall of the spray layer 9, the other end of the second pipe 16 is fixedly connected to the upper opening of the dilution tank 13, and the transfer pump 15 is electrically connected to the controller 3.

[0019] The specific setup and function of this embodiment are described below. The desulfurization tower 1 is a vertical cylindrical structure and is the core site for the flue gas desulfurization reaction. From top to bottom, the tower body integrates a demister 8, a spray layer 9, and a packing layer 10, forming a vertical functional zone of "gas-liquid contact – reaction – gas-liquid separation". The lower end of the tower body is sealed to the desulfurization liquid circulation tank 2. The desulfurization liquid circulation tank 2 serves as the collection and circulation center for the post-reaction liquid. Its structure and supporting components are designed as follows: The desulfurization liquid circulation tank 2 is made of fiberglass resistant to sulfuric acid corrosion, and its volume is matched to the processing capacity of the desulfurization tower 1; a stirring device is installed inside the tank to prevent uneven local concentration of the liquid; a controller 3 is installed on the outside of the tank wall, serving as the control core of the entire device to achieve automated linkage of various components. The circulation power components are configured as follows: a circulation pump 4 is installed at the upper end of the circulation tank, and the circulation pump 4 is an acid-resistant centrifugal pump. Its inlet end is penetrated through the No. 1 pipe 5 to the lower middle part of the desulfurization liquid circulation tank 2, ensuring that most of the liquid material in the tank can be extracted and avoiding the extraction of sediment at the bottom of the tank; the outlet end is penetrated through the side wall of the desulfurization tower 1 through the first connecting pipe 12, and is sealed and connected to the spray layer 9 in the tower to form a liquid material circulation loop.

[0020] Key internal components of desulfurization tower 1 are detailed: Spray layer 9 adopts a three-layer staggered arrangement, with twelve spiral atomizing nozzles installed in each layer to ensure full contact between the liquid and flue gas. Packing layer 10 uses polypropylene stepped ring packing, with a gas distributor installed below the packing to ensure uniform distribution of flue gas and avoid insufficient local gas-liquid contact. Demister 8 is a baffle type, equipped with a flushing water network above it, and connected to the process water system.

[0021] The absorbent preparation and delivery system is responsible for preparing industrial-grade hydrogen peroxide into an absorbent that meets the reaction requirements and accurately delivering it to desulfurization tower 1. The specific configuration is as follows: The hydrogen peroxide storage tank 11 is made of stainless steel, and its volume is designed according to the operating load. The tank is equipped with a level gauge and a temperature sensor to monitor the hydrogen peroxide level and temperature in real time, preventing decomposition due to high temperatures. The lower opening of the storage tank is fixedly connected to the upper opening of the dilution tank 13 via pipe 16. An electric regulating valve and flow meter are installed on pipe 16, and the controller 3 precisely controls the hydrogen peroxide feed rate according to set parameters. The dilution tank 13 is made of corrosion-resistant material and has an internal stirring device to ensure thorough mixing of hydrogen peroxide and process water. A concentration sensor is also installed inside the tank to monitor the concentration of the diluted hydrogen peroxide in real time, ensuring that the concentration remains stable within a safe and suitable reaction range. Furthermore, the dilution tank 13 is connected to the process water system via pipelines to achieve automatic water replenishment and dilution regulation.

[0022] The transfer pump 15 is installed on the upper end of the dilution tank 13. It is an acid-resistant diaphragm pump, and its outlet end passes through the outer wall of the desulfurization tower 1 via a second connecting pipe 14, connecting to the spray layer 9. A flow meter and a check valve are installed on the second connecting pipe 14 to monitor the transfer flow rate and prevent liquid backflow. The transfer pump 15 is electrically connected to the controller 3, which can automatically adjust the transfer rate of hydrogen peroxide absorbent based on the concentration signal of sulfur dioxide in the flue gas.

[0023] Example 2: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a water tank 6 is provided on one side of the desulfurization liquid circulation tank 2. A humidifier 19 is fixedly connected to the liquid inlet of the desulfurization tower 1. A water replenishment pump 22 is installed at the upper end of the desulfurization liquid circulation tank 2. A four-way pipe 18 is fixedly connected to the liquid outlet of the water replenishment pump 22. A third connecting pipe 23 is fixedly connected to the liquid inlet of the water replenishment pump 22. The other three liquid outlets of the four-way pipe 18 are fixedly connected to a fourth connecting pipe 24, a fifth connecting pipe 25, and a sixth connecting pipe 26, respectively. A part of the third connecting pipe 23 extends into the interior of the water tank 6. The other end of the fourth connecting pipe 24 extends through the outer wall of the desulfurization tower 1 and is fixedly connected to the opening of the outer wall of the demister 8. A part of the fifth connecting pipe 25 extends into the interior of the dilution tank 13. The other end of the sixth connecting pipe 26 is fixedly connected to the liquid inlet of the humidifier 19. The water replenishment pump 22 is electrically connected to the controller 3.

[0024] A concentration detector 7 is installed at the upper end of the desulfurization liquid circulation tank 2. An external discharge pump 20 is installed on the other side of the desulfurization liquid circulation tank 2. The inlet end of the external discharge pump 20 is fixedly connected to a No. 4 pipe 21. The other end of the No. 4 pipe 21 extends into the interior of the desulfurization liquid circulation tank 2. A part of the concentration detector 7 extends into the interior of the desulfurization liquid circulation tank 2. Both the concentration detector 7 and the external discharge pump 20 are electrically connected to the controller 3.

[0025] The process water supply system provides a stable source of clean water for all stages of the unit and is a key auxiliary system to ensure the normal operation of the unit. The specific design is as follows: Water storage and power unit: Water tank 6 is made of stainless steel and has an automatic low-level water replenishment function. The water replenishment pump 22 is installed at the top of the desulfurization liquid circulation tank 2 and is a centrifugal pump. The inlet end passes through the third connecting pipe 23 into the interior of water tank 6. A filter is installed on the third connecting pipe 23 to prevent impurities from entering the system. The outlet of the water pump 22 is fixedly connected to the four-way pipe 18. The other three outlets of the four-way pipe 18 are connected to the fourth connecting pipe 24, the fifth connecting pipe 25, and the sixth connecting pipe 26, respectively, forming three independent water supply branches: 1. Demister flushing branch: The fourth connecting pipe 24 penetrates the outer wall of the desulfurization tower 1 and connects to the flushing water network of the demister 8 to achieve periodic flushing of the demister 8; 2. Hydrogen peroxide dilution branch: The fifth connecting pipe 25 penetrates into the interior of the dilution tank 13 to provide process water for hydrogen peroxide dilution; 3. Flue gas humidification branch: The sixth connecting pipe 26 connects to the humidifier 19 at the inlet of the desulfurization tower 1 to provide humidification water for flue gas pretreatment. All three branch pipes are equipped with electric regulating valves and flow meters, and the water supply of each branch is independently controlled by the controller 3.

[0026] The flue gas pretreatment components are configured as follows: Humidifier 19 is a spray-type structure, connected in series with the flue gas inlet pipe, and internally equipped with atomizing nozzles and a temperature sensor. By spraying process water, the flue gas temperature is reduced to 60-70℃, thereby optimizing the desulfurization reaction conditions. The temperature sensor monitors the flue gas concentration in real time and feeds the data back to controller 3.

[0027] The monitoring and discharge components are configured as follows: A concentration detector 7 is installed at the top of the desulfurization liquid circulation tank 2, with its probe penetrating to the middle of the liquid inside the tank for real-time monitoring of the concentration of dilute sulfuric acid in the liquid. An discharge pump 20 is installed on the other side of the circulation tank. The discharge pump 20 is a magnetically driven acid-resistant pump, with its inlet end penetrating into the circulation tank through pipe No. 4 21, and its outlet end connected to an external by-product storage tank for discharging and recovering dilute sulfuric acid of the required concentration as a by-product.

[0028] Controller 3 adopts a PLC control system, integrating data acquisition, logic judgment, and execution control functions. The core linkage logic is as follows: When the concentration detector 7 detects that the mass fraction of dilute sulfuric acid in the desulfurization liquid circulation tank 2 reaches 30%, controller 3 automatically starts the external discharge pump 20 to discharge the sulfuric acid, and simultaneously replenishes water to the circulation tank through the water replenishment pump 22 to maintain a stable liquid level. When the temperature sensor of the humidifier 19 detects that the flue gas temperature is higher than 70℃, controller 3 increases the opening of the regulating valve on the sixth connecting pipe 26 to increase the water supply and reduce the flue gas temperature. If the concentration sensor of the dilution tank 13 detects that the concentration of hydrogen peroxide absorbent is lower than the set value, controller 3 increases the opening of the regulating valve on the second pipe 16 to increase the hydrogen peroxide feed rate, or reduces the water replenishment rate of the fifth connecting pipe 25 to ensure that the absorbent concentration meets the process requirements.

[0029] The usage and working principle of this device are as follows: Absorbent preparation: Industrial-grade hydrogen peroxide is stored in a stainless steel hydrogen peroxide storage tank 11. A level gauge and temperature sensor monitor the status in real time to prevent decomposition. The hydrogen peroxide storage tank 11 supplies the hydrogen peroxide to the corrosion-resistant dilution tank 13 via pipe 16. An electric regulating valve and flow meter, in conjunction with controller 3, precisely control the flow rate. The process water system replenishes water to the dilution tank 13 via the fifth connecting pipe 25.

[0030] The flue gas pretreatment process is as follows: Sulfur-containing flue gas first enters the spray-type humidifier 19. The water pump 22 delivers clean water from the water tank 6 to the humidifier 19 through the sixth connecting pipe 26, and then sprays it through atomizing nozzles, reducing the flue gas temperature to 60-70℃. A temperature sensor monitors the flue gas temperature in real time and sends the data back to the controller 3. The controller 3 adjusts the water supply based on the feedback information to stabilize the flue gas temperature and humidity, creating optimal conditions for subsequent reactions.

[0031] The pretreated flue gas enters the vertical cylindrical desulfurization tower 1, where it is evenly distributed by a gas distributor below the packing layer 10 and flows upward. Simultaneously, diluted hydrogen peroxide is pressurized by an acid-resistant diaphragm pump 15 and delivered through a second connecting pipe 14 to the three staggered spray layers 9 within the tower. The spiral atomizing nozzles in the spray layer 9 atomize the absorbent and spray it downwards, ensuring thorough contact and reaction with the rising flue gas within the polypropylene stepped ring packing layer 10.

[0032] During the contact process, sulfur dioxide in the flue gas dissolves in water to form sulfurous acid, which is then rapidly oxidized by hydrogen peroxide into dilute sulfuric acid. The resulting gas-liquid mixture falls naturally under gravity and flows into the desulfurization liquid circulation tank 2 through the sealed connection between the bottom of the desulfurization tower 1 and the desulfurization liquid circulation tank 2.

[0033] Finally, the liquid is recycled and reused. The circulating pump 4 in the desulfurization liquid circulation tank 2 draws the liquid through the No. 1 pipe 5 and sends it back to the spray layer 9 for circulation reaction through the first connecting pipe 12. The stirring device in the tank prevents the liquid concentration from being uneven.

[0034] The process water supply system uses water tank 6 as the central water source. When the level gauge of water tank 6 detects a low level, it sends a signal to controller 3. Controller 3 then controls an external water source to automatically replenish water to water tank 6. Water pump 22 distributes water through a four-way pipe 18 into three independent branches: the fourth connecting pipe 24 supplies water to the flushing water network of demister 8, periodically flushing the baffle-type demister 8 to prevent clogging; the fifth connecting pipe 25 supplies process water to dilution tank 13; and the sixth connecting pipe 26 supplies water to humidifier 19 for flue gas pretreatment. All three branches are independently controlled by controller 3 via electric regulating valves and flow meters.

[0035] Concentration control and discharge are as follows: The probe of the concentration detector 7 is inserted into the middle of the liquid in the desulfurization liquid circulation tank 2 to monitor the concentration of dilute sulfuric acid in real time. When the mass fraction of dilute sulfuric acid reaches 30%, the controller 3 automatically starts the magnetically driven acid-resistant discharge pump 20, which discharges qualified dilute sulfuric acid to the by-product storage tank for recovery through pipe No. 4 21. Simultaneously with the discharge, the water replenishment pump 22 replenishes water to maintain a stable liquid level in the desulfurization liquid circulation tank 2.

[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A hydrogen peroxide desulfurization device, comprising a desulfurization tower (1), characterized in that: The desulfurization tower (1) is equipped with a desulfurization liquid circulation tank (2) at its lower end, and a controller (3) is installed at the front end of the desulfurization liquid circulation tank (2). A circulation pump (4) is installed at the upper end of the desulfurization liquid circulation tank (2). The inlet end of the circulation pump (4) is fixedly connected to a No. 1 pipe (5). The interior of the desulfurization tower (1) is equipped with a demister (8), a spray layer (9), and a packing layer (10) from top to bottom. The spray layer (9) is arranged in three staggered layers, with twelve spiral atomizing nozzles installed in each layer. The desulfurization liquid circulation tank... (2) A hydrogen peroxide storage tank (11) is provided on one side. The outlet end of the circulation pump (4) is fixedly connected to the first connecting pipe (12). A dilution tank (13) is provided on one side of the desulfurization liquid circulation tank (2). A delivery pump (15) is installed at the upper end of the dilution tank (13). The outlet end of the delivery pump (15) is fixedly connected to the second connecting pipe (14). The lower opening of the hydrogen peroxide storage tank (11) is fixedly connected to the second pipe (16). The inlet end of the delivery pump (15) is fixedly connected to the third pipe (17).

2. The hydrogen peroxide desulfurization device according to claim 1, characterized in that: The other end of the first pipe (5) passes through one end of the desulfurization liquid circulation tank (2) and extends into its interior. The other end of the first connecting pipe (12) passes through the outer wall of the desulfurization tower (1) and is fixedly connected to the outer wall of the spray layer (9). The circulation pump (4) is electrically connected to the controller (3).

3. The hydrogen peroxide desulfurization device according to claim 1, characterized in that: The other end of the second connecting pipe (14) penetrates the outer wall of the desulfurization tower (1) and is fixedly connected to the outer wall of the spray layer (9). The other end of the second pipe (16) is fixedly connected to the upper opening of the dilution tank (13). The delivery pump (15) is electrically connected to the controller (3).

4. The hydrogen peroxide desulfurization device according to claim 1, characterized in that: A water tank (6) is provided on one side of the desulfurization liquid circulation tank (2). A humidifier (19) is fixedly connected to the liquid inlet of the desulfurization tower (1). A water replenishment pump (22) is installed at the upper end of the desulfurization liquid circulation tank (2). A four-way pipe (18) is fixedly connected to the liquid outlet of the water replenishment pump (22). A third connecting pipe (23) is fixedly connected to the liquid inlet of the water replenishment pump (22). The other three liquid outlets of the four-way pipe (18) are respectively fixedly connected to a fourth connecting pipe (24), a fifth connecting pipe (25), and a sixth connecting pipe (26).

5. The hydrogen peroxide desulfurization device according to claim 4, characterized in that: A portion of the third connecting pipe (23) extends into the interior of the water tank (6), the other end of the fourth connecting pipe (24) extends through the outer wall of the desulfurization tower (1) and is fixedly connected to the outer wall opening of the demister (8), a portion of the fifth connecting pipe (25) extends into the interior of the dilution tank (13), the other end of the sixth connecting pipe (26) is fixedly connected to the liquid inlet of the humidifier (19), and the water replenishment pump (22) is electrically connected to the controller (3).

6. The hydrogen peroxide desulfurization device according to claim 1, characterized in that: A concentration detector (7) is installed at the upper end of the desulfurization liquid circulation tank (2), and an external discharge pump (20) is installed on the other side of the desulfurization liquid circulation tank (2). The inlet end of the external discharge pump (20) is fixedly connected to a No. 4 pipe (21), and the other end of the No. 4 pipe (21) extends into the interior of the desulfurization liquid circulation tank (2).

7. The hydrogen peroxide desulfurization device according to claim 6, characterized in that: A portion of the concentration detector (7) extends into the interior of the desulfurization liquid circulation tank (2), and both the concentration detector (7) and the external discharge pump (20) are electrically connected to the controller (3).

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