Spraying and absorbing device and system for sulfuric acid mist

Abstract

The invention provides a spray absorption device and system for sulfuric acid mist, and relates to the technical field of spray towers, the device comprises an absorption tower body, and the top of the absorption tower body is provided with an exhaust fan; the circulating spraying assembly is used for uniformly spraying the absorption liquid into the sulfuric acid mist waste gas and recycling the absorption liquid; the plurality of filler layers are uniformly arranged in the absorption tower body at intervals and are used for increasing the contact area between the absorption liquid and the sulfuric acid mist waste gas and improving the absorption efficiency; the demister is mounted at the top of the absorption tower body and is used for removing liquid drops in the absorbed sulfuric acid mist waste gas. The corrosion-resistant design of the absorption tower body ensures the long-term operation stability, the exhaust fan at the top facilitates flexible regulation and control of the exhaust rate of purified gas, the absorption efficiency is improved while the absorption reliability is ensured, the contact area of the filler layer is increased through the honeycomb structure, the absorption efficiency is improved, the demister effectively removes residual liquid drops, and the service life of the absorption tower is prolonged. The design of the fixing ring ensures that the packing layer can be flexibly disassembled and assembled.

Description

Technical Field

[0001] The present invention belongs to the technical field of spray towers, and particularly relates to a spray absorption device and system for sulfuric acid mist. Background Art

[0002] Sulfuric acid mist waste gas is a seriously harmful industrial pollutant. For the treatment of sulfuric acid mist waste gas, spray towers are widely used as an efficient absorption device. The core principle of a spray tower is to dissolve or neutralize the harmful components in the sulfuric acid mist waste gas by circulating and spraying the absorption liquid, so as to achieve the purpose of purifying the air. In a spray tower, the absorption liquid is usually an alkaline solution, which can effectively neutralize the acidic substances in the sulfuric acid mist. After the waste gas enters the spray tower, it first passes through the packing layer. The packing layer increases the gas-liquid contact area to improve the absorption efficiency. Subsequently, the waste gas enters the circulating spray area, and the absorption liquid sprayed by the nozzles evenly covers the entire gas flow path, enabling the sulfuric acid mist to fully contact and react with the absorption liquid. Finally, the purified gas passes through the demister to remove the residual liquid droplets and then is discharged outside the tower, while the absorption liquid returns to the storage tank through the circulation system for cooling and regeneration. The existing sulfuric acid mist spray towers lack components for regulating the discharge rate of the purified gas, resulting in frequent situations of incomplete purification or low purification efficiency. Summary of the Invention

[0003] The present invention provides a spray absorption device and system for sulfuric acid mist to solve at least one of the above-mentioned technical problems.

[0004] To solve the above technical problems, the present invention discloses a spray absorption device and system for sulfuric acid mist. The device includes: An absorption tower body made of corrosion-resistant materials, with an exhaust fan installed at the top of the absorption tower body; A circulating spray assembly for evenly spraying the absorption liquid into the sulfuric acid mist waste gas and realizing the recycling of the absorption liquid; A packing layer, with several packing layers arranged at equal intervals inside the absorption tower body, for increasing the contact area between the absorption liquid and the sulfuric acid mist waste gas and improving the absorption efficiency; A demister installed at the top of the absorption tower body for removing the liquid droplets in the sulfuric acid mist waste gas after absorption.

[0005] Preferably, the circulating spray assembly includes: A spray assembly including nozzles and pipes, which is used to evenly spray the absorption liquid into the sulfuric acid mist waste gas; A circulation system including a storage tank, a circulation pump, and a cooling device for recycling and reusing the absorption liquid; The liquid storage tank communicates with the main pipeline of the pipeline. There are several branch pipelines on the main pipeline. The branch pipelines are located inside the absorption tower body. Nozzles are arranged on the branch pipelines. The inlet of the liquid storage tank communicates with the bottom of the absorption tower body, and the outlet end of the liquid storage tank communicates with the main pipeline. A cooling device is arranged in the liquid storage tank to adjust the temperature of the absorption liquid.

[0006] Preferably, the packing layer is honeycomb-shaped and is fixed through the mounting ring on the inner wall of the absorption tower body.

[0007] Preferably, the cooling device includes a cooling water plate, a refrigerator, a coolant storage tank and a cooling circulation loop. The cooling water plate is installed in the liquid storage tank. The cooling water plate, the refrigerator and the coolant storage tank are connected through the cooling circulation loop to realize the circulation of cooling water in the cooling water plate, the refrigerator and the coolant storage tank.

[0008] Preferably, the demister includes: An umbrella-shaped fiber board installed on the inner wall of the top of the absorption tower body, and several guiding fibers are arranged on the surface of the umbrella-shaped fiber board; A droplet collection tank located at the bottom of the umbrella-shaped fiber board; Several droplet collection hoses, one end of which is installed in the droplet collection tank and the other end is located at the bottom of the absorption tower body; A cooling coil installed in the umbrella-shaped fiber board for cooling the sulfuric acid mist waste gas after absorption.

[0009] A spray absorption system for sulfuric acid mist includes: The main body of the spray absorption device includes an absorption tower body, a circulating spray assembly, a packing layer and a demister; The data acquisition module includes several groups of acquisition sub-modules. Each group of acquisition sub-modules includes several sulfuric acid concentration sensors and several temperature sensors. The several sulfuric acid concentration sensors and several temperature sensors are arranged on the inner wall of the absorption tower body. Each group of acquisition sub-modules corresponds to a group of branch pipelines and; The central judgment module is used to perform cooling device fault alarm or spray regulation prompt based on the detection values of the sulfuric acid concentration sensors and temperature sensors; The spray regulation module is used to perform spray regulation based on the judgment result of the central judgment module.

[0010] Preferably, the central judgment module performs fault alarm or spray regulation prompt based on the detection values of the sulfuric acid concentration sensors and temperature sensors, including: Calculating the average values of the sulfuric acid concentration sensors and temperature sensors of each group of acquisition sub-modules: ; where is the average detection value of a number of sulfuric acid concentration sensors in the x-th group of acquisition sub-modules, and n is the total number of sulfuric acid concentration sensors in the x-th group of acquisition sub-modules. is the detection value of the j-th sulfuric acid concentration sensor in the x-th group of acquisition sub-modules; ; where is the average detection value of a number of temperature sensors in the x-th group of acquisition sub-modules, is the total number of temperature sensors in the x-th group of acquisition sub-modules, is the detection value of the i-th temperature sensor in the x-th group of acquisition sub-modules; When > it is proved that the spray of the branch pipeline corresponding to the x-th group of acquisition sub-modules of the absorption tower body fails at this time, and the spray regulation module performs spray regulation at this time; When the average detection value of the temperature sensors of more than 3 groups of acquisition sub-modules is greater than the preset average temperature value of the corresponding acquisition sub-module group, it is proved that the cooling device of the circulation system of the absorption tower body fails at this time, and a cooling device failure alarm prompt is required.

[0011] Preferably, the spray regulation module is used to calculate the supply flow rate and supply pressure required for the branch pipeline corresponding to the x-th group of acquisition sub-modules based on the detection values of each sulfuric acid concentration sensor and each temperature sensor in the x-th group of acquisition sub-modules, including the following steps: Step 1: Calculate the spray non-conformance degree coefficient of the branch pipeline corresponding to the x-th group of acquisition sub-modules based on the sulfuric acid concentration sensor and the temperature sensor: ; where is the spray non-conformance degree coefficient of the branch pipeline corresponding to the x-th group of acquisition sub-modules, is the detection error coefficient of the sulfuric acid concentration sensor, is a natural number with a value of 2.71, is the detection error coefficient of the temperature sensor, represents the maximum value in; Step 2: Calculate the supply flow rate and supply pressure required for the branch pipeline corresponding to the x-th group of acquisition sub-modules based on Step 1: ; where is the supply flow rate required for the branch pipeline corresponding to the x-th group of acquisition sub-modules, is the total number of nozzles on all corresponding branch pipelines, is the preset reference spraying intensity of the nozzle, is the reference spraying area corresponding to the unit sulfuric acid concentration; ; is the supply pressure required for the branch pipeline corresponding to the xth group of collection sub-modules, is the reference supply pressure of the corresponding branch pipeline, is the total number of branch pipelines corresponding to the xth group of collection sub-modules, is the total length of the branch pipeline corresponding to the xth group of collection sub-modules, is the reference hydraulic loss per unit length of the absorbent during transportation, is the preset spraying duration of the xth group of collection sub-modules corresponding to the branch pipeline, is the reference flow velocity of the absorbent in the branch pipeline corresponding to the xth group of collection sub-modules, is pi, with a value of 3.14, is the radius of the branch pipeline corresponding to the xth group of collection sub-modules.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The corrosion-resistant design of the absorption tower body of the present invention ensures long-term operation stability. The top exhaust fan helps to flexibly control the discharge rate of the purified gas, increasing the absorption efficiency while ensuring the absorption reliability. The packing layer increases the contact area through the honeycomb structure to improve the absorption efficiency. The demister effectively removes the residual liquid droplets, and the design of the fixing ring ensures that the packing layer can be flexibly disassembled and assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a three-dimensional schematic diagram of the spraying absorption device for sulfuric acid mist of the present invention; Figure 2 is a side view of the spraying absorption device for sulfuric acid mist of the present invention; Figure 3 is a cross-sectional view of the spraying absorption device for sulfuric acid mist of the present invention; Figure 4 is for the present invention Figure 4 local enlarged view of part A; Figure 5 is a schematic diagram of the demister structure of the present invention.

[0014] In the figure: 1, absorption tower body; 2, circulating spraying assembly; 20, nozzle; 21, pipeline; 210, main pipeline; 211, branch pipeline; 22, spraying assembly; 3, packing layer; 4, demister; 41, umbrella-shaped fiber board; 42, droplet collection tank; 43, droplet collection hose; 44, cooling coil; 5, circulation system; 50, liquid storage tank. DETAILED DESCRIPTION OF THE INVENTION

[0015] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0016] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence. Nor are they used to limit the present invention. They are merely used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0017] The present invention provides the following embodiments Embodiment 1 The embodiment of the present invention provides a spray absorption device and system for sulfuric acid mist, as Figures 1-5 shown. The device includes an absorption tower body 1 made of corrosion-resistant material, and an exhaust fan is provided at the top of the absorption tower body 1; A circulating spray assembly 2 for uniformly spraying the absorption liquid into the sulfuric acid mist waste gas and realizing the recycling of the absorption liquid; A packing layer 3, and a plurality of packing layers 3 are arranged at equal intervals inside the absorption tower body 1 for increasing the contact area between the absorption liquid and the sulfuric acid mist waste gas and improving the absorption efficiency; A demister 4 installed at the top of the absorption tower body 1 for removing droplets in the sulfuric acid mist waste gas after absorption.

[0018] Preferably, the packing layer 3 is honeycomb-shaped, and the packing layer 3 is fixed by an installation ring on the inner wall of the absorption tower body 1.

[0019] The working principle and beneficial effects of the above technical solution are as follows: When the present invention works, the waste gas containing sulfuric acid mist first enters the bottom of the absorption tower body 1 and contacts the absorption liquid sprayed from the upper part in a countercurrent manner. Under the action of the packing layer 3, the gas and liquid are fully mixed, and the sulfuric acid mist is dissolved into the absorption liquid. After the treated gas removes the droplets therein through the demister 4, it is discharged by the exhaust fan, and the absorption liquid returns to the storage tank 50 through the circulating spray assembly 2 and is put into use again after cooling and replenishing fresh absorbent; The corrosion-resistant design of the absorption tower body 1 of the present invention ensures long-term operation stability. The top exhaust fan helps to flexibly regulate the discharge rate of the purified gas, increasing the absorption efficiency while ensuring the absorption reliability. The packing layer 3 enhances the absorption efficiency by increasing the contact area through the honeycomb structure 3. The demister 4 effectively removes the residual droplets, and the design of the fixing ring 3 ensures that the packing layer 3 can be flexibly disassembled and assembled.

[0020] Example 2 Based on Example 1, the circulating spray assembly 2 includes: The spray assembly 22, including a nozzle 20 and a pipe 21, is used to evenly spray the absorption liquid into the sulfuric acid mist waste gas; The circulation system 5, including a liquid storage tank 50, a circulation pump, and a cooling device, is used to recover and reuse the absorption liquid; The liquid storage tank 50 communicates with the main pipe 210 of the pipe 21. A number of branch pipes 211 are provided on the main pipe 210. The branch pipes 211 are located inside the absorption tower body 1. The nozzle 20 is arranged on the branch pipes 211. The inlet of the liquid storage tank 50 communicates with the bottom of the absorption tower body 1, and the outlet end of the liquid storage tank 50 communicates with the main pipe 210. The cooling device is arranged inside the liquid storage tank 50 to adjust the temperature of the absorption liquid.

[0021] Preferably, the cooling device includes a cooling water plate, a refrigerator, a coolant storage tank, and a cooling circulation loop. The cooling water plate is installed inside the liquid storage tank 50, and the cooling water plate, the refrigerator, and the coolant storage tank are connected through the cooling circulation loop to realize the circulation of the cooling water in the cooling water plate, the refrigerator, and the coolant storage tank.

[0022] The working principle and beneficial effects of the above technical solution are as follows: The design of the circulating spray assembly 2 of the present invention realizes the uniform spraying of the absorption liquid through the nozzle 20 and the pipe 21, and the absorbed liquid is introduced into the liquid storage tank 50 through the circulation system 5 for cooling and reuse. The cooling device 5 uses the synergistic effect of the cooling water plate, the refrigerator, and the coolant storage tank to maintain the appropriate temperature of the absorption liquid; The present invention realizes the recycling of the absorption liquid through the spray assembly 22. The cooling device 5 adjusts the temperature of the absorption liquid to maintain the best cooling performance. Spraying can significantly improve the absorption efficiency, and at the same time, the performance of the absorption liquid is ensured to be stable through the cooling device 5, thereby reducing energy consumption and operating costs.

[0023] Example 3 Based on Example 1, the demister 4 includes: The umbrella-shaped fiber board 41, which is installed on the inner wall of the top of the absorption tower body 1, and a number of guide fibers are provided on the surface of the umbrella-shaped fiber board 41; The droplet collection tank 42, which is located at the bottom of the umbrella-shaped fiber board 41; The droplet collection hose 43, one end of a plurality of droplet collection hoses 43 is installed in the droplet collection tank 42, and the other end is located at the bottom of the absorption tower body 1; The cooling coil 44, the cooling coil 44 is installed in the umbrella-shaped fiber board 41 and is used to cool the sulfuric acid mist waste gas after absorption.

[0024] The working principle and beneficial effects of the above technical solution are as follows: In the design of the demister 4 of the present invention, the guiding fibers of the umbrella-shaped fiber board 41 can effectively capture droplets, and the droplet collection tank 42 and the droplet collection hose 43 collect and discharge the droplets to the bottom of the absorption tower body 1, and the cooling coil 44 cools the air flow to enhance the demisting effect; The present invention uses the umbrella-shaped fiber board 41 to capture droplets and guide them to the collection tank 42 through the guiding fibers. At the same time, the cooling coil 44 reduces the gas temperature to further improve the demisting efficiency, greatly improves the demisting performance, reduces the droplet residue rate, and helps to improve the environmental protection and reliability of the overall system.

[0025] Embodiment 4 Based on any one of Embodiments 1-3, a spray absorption system for sulfuric acid mist includes: The main body of the spray absorption device, including the absorption tower body 1, the circulating spray assembly 2, the packing layer 3 and the demister 4; The data acquisition module, including several groups of acquisition sub-modules, each group of acquisition sub-modules includes several sulfuric acid concentration sensors 212 and several temperature sensors 213, several sulfuric acid concentration sensors 212 and several temperature sensors 213 are arranged on the inner wall of the absorption tower body 1, and each group of acquisition sub-modules corresponds to a group of branch pipes 211 and; The central judgment module is used to perform cooling device fault alarm or spray control prompt based on the detection values of the sulfuric acid concentration sensor 212 and the temperature sensor 213; The spray control module is used to perform spray control based on the judgment result of the central judgment module.

[0026] The working principle and beneficial effects of the above technical solution: In the present invention, the data acquisition module, that is, several sulfuric acid concentration sensors 212 and several temperature sensors 213, monitors the sulfuric acid concentration and temperature in real time, and the central judgment module judges whether to start the cooling device fault alarm or perform spray control according to the detection values. The spray control module adjusts the spray parameters according to the instructions of the central judgment module; The present invention uses the data acquisition module to monitor the key parameters in the absorption tower body 1 in real time, and optimizes the spray operation through intelligent algorithms, realizing automatic control, improving the operation efficiency and stability of the system, reducing manual intervention at the same time, and reducing the operation cost.

[0027] Embodiment 5 Based on Embodiment 4, the central judgment module performs fault alarm or spray control prompt based on the detection values of the sulfuric acid concentration sensor 212 and the temperature sensor 213, including: Calculate the average values of the sulfuric acid concentration sensor 212 and the temperature sensor 213 of each acquisition sub-module: ; where is the average detection value of several sulfuric acid concentration sensors 212 of the x-th acquisition sub-module, n is the total number of sulfuric acid concentration sensors 212 of the x-th acquisition sub-module, is the detection value of the j-th sulfuric acid concentration sensor 212 of the x-th acquisition sub-module; ; where is the average detection value of several temperature sensors 213 of the x-th acquisition sub-module, is the total number of temperature sensors 213 of the x-th acquisition sub-module, is the detection value of the i-th temperature sensor 213 of the x-th acquisition sub-module; When >[[]]END]] it proves that the spray of the branch pipeline 211 corresponding to the x-th acquisition sub-module of the absorption tower body 1 fails at this time, and the spray control module performs spray control at this time; When the average detection values of the temperature sensors of more than 3 acquisition sub-modules are greater than the preset average temperature value of the corresponding acquisition sub-module group, it proves that the cooling device of the circulation system 5 of the absorption tower body 1 fails at this time, and a cooling device fault alarm prompt is required.

[0028] The working principle and beneficial effects of the above technical solution are: By calculating the average values of the sulfuric acid concentration sensor 212 and the temperature sensor 213, the present invention judges whether there is a spray fault or a cooling device fault. When the average value of the sulfuric acid concentration sensor of a certain acquisition sub-module exceeds the threshold, the spray control is triggered. When the average values of multiple temperature sensors exceed the preset value, the cooling device fault alarm is triggered. The sensor data is used to evaluate the device state in real time, and the fault type is accurately identified through the algorithm, significantly improving the fault diagnosis ability of the system, shortening the response time, and ensuring the continuous and stable operation of the system.

[0029] Embodiment 6 Based on Embodiment 5, the spray control module is used to calculate the required supply flow and supply pressure of the branch pipeline 211 corresponding to the x-th acquisition sub-module based on the detection values of each sulfuric acid concentration sensor 212 of the x-th acquisition sub-module and the detection values of each temperature sensor 213 of the x-th acquisition sub-module, including the following steps: Step 1: Based on the sulfuric acid concentration sensor 212 and the temperature sensor 213, calculate the spray non - compliance degree coefficient of the branch pipe 211 corresponding to the x - th group of acquisition sub - modules: ; where, is the spray non - compliance degree coefficient of the branch pipe 211 corresponding to the x - th group of acquisition sub - modules, is the detection error coefficient of the sulfuric acid concentration sensor 212, is a natural number with a value of 2.71, is the detection error coefficient of the temperature sensor 213, denotes the maximum value in; Step 2: Based on Step 1, calculate the supply flow rate and supply pressure required for the branch pipe 211 corresponding to the x - th group of acquisition sub - modules: ; where, is the supply flow rate required for the branch pipe 211 corresponding to the x - th group of acquisition sub - modules, is the total number of nozzles 20 on all corresponding branch pipes 211, is the preset reference spray intensity of the nozzle 20, is the reference spray area corresponding to the unit sulfuric acid concentration; ; is the supply pressure required for the branch pipe 211 corresponding to the x - th group of acquisition sub - modules, is the reference supply pressure of the corresponding branch pipe 211, is the total number of branch pipes 211 corresponding to the x - th group of acquisition sub - modules, is the total length of the branch pipe 211 corresponding to the x - th group of acquisition sub - modules, is the reference hydraulic loss per unit length during the transportation of the absorption liquid, is the preset spray duration of the branch pipe 211 corresponding to the x - th group of acquisition sub - modules, is the reference flow velocity of the absorption liquid in the branch pipe 211 corresponding to the x - th group of acquisition sub - modules, is the pi, with a value of 3.14, is the radius of the branch pipe 211 corresponding to the x - th group of acquisition sub - modules.

[0030] The working principle and beneficial effects of the above technical solution are as follows: By calculating the coefficient of non - compliance of spraying, the present invention accurately calculates the required supply flow rate and supply pressure of the branch pipeline 211. The coefficient of non - compliance of spraying comprehensively considers the detection errors of the sulfuric acid concentration sensor 212 and the temperature sensor 213. The supply flow rate and supply pressure are dynamically adjusted according to factors such as the total number, length, and flow velocity of the branch pipelines. By optimizing the spraying parameters through intelligent algorithms, it ensures the uniform distribution of the absorption liquid and meets the actual requirements, achieving precise spraying control, improving the absorption efficiency, reducing resource waste, and enhancing the adaptability and flexibility of the system.

[0031] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and its equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A spray absorption device for sulfuric acid mist, characterized in that: include: The absorption tower body (1) is made of corrosion-resistant material, and an exhaust fan is provided on the top of the absorption tower body (1); A circulating spraying assembly (2) is used to evenly spray the absorption liquid into the sulfuric acid mist exhaust gas and realize recycling of the absorption liquid; A packing layer (3), wherein a plurality of packing layers (3) are evenly spaced and arranged inside the absorption tower body (1), and are used to increase the contact area between the absorption liquid and the sulfuric acid mist waste gas, thereby improving the absorption efficiency; The demister (4) is installed on the top of the absorption tower body (1) and is used to remove liquid droplets in the sulfuric acid mist waste gas after absorption.

2. A spray absorption device for sulfuric acid mist according to claim 1, characterized in that: The circulating spray assembly (2) comprises: A spray assembly (22) comprising a nozzle (20) and a pipe (21), the spray assembly (22) being used to evenly spray the absorption liquid into the sulfuric acid mist exhaust gas; A circulation system (5), comprising a liquid storage tank (50), a circulation pump and a cooling device, for recovering and reusing the absorption liquid; The liquid storage tank (50) is in communication with a main pipeline (210) of the pipeline (21); a plurality of branch pipelines (211) are provided on the main pipeline (210); the branch pipelines (211) are located in the absorption tower body (1); the nozzle (20) is arranged on the branch pipeline (211); the inlet of the liquid storage tank (50) is in communication with the bottom of the absorption tower body (1); the outlet of the liquid storage tank (50) is in communication with the main pipeline (210); and the cooling device is arranged in the liquid storage tank (50) for adjusting the temperature of the absorption liquid.

3. A spray absorption device for sulfuric acid mist according to claim 1, characterized in that: The packing layer (3) is honeycomb-shaped, and the packing layer (3) is fixed by means of a mounting ring on the inner wall of the absorption tower body (1).

4. A spray absorption device for sulfuric acid mist according to claim 2, characterized in that: The cooling device comprises a cooling water plate, a refrigerator, a coolant storage tank and a cooling circulation loop, wherein the cooling water plate is installed in a liquid storage tank (50), and the cooling water plate, the refrigerator and the coolant storage tank are connected via the cooling circulation loop, so that the cooling water circulates in the cooling water plate, the refrigerator and the coolant storage tank.

5. A spray absorption device for sulfuric acid mist according to claim 1, characterized in that: The demister (4) comprises: An umbrella-shaped fiber board (41), the umbrella-shaped fiber board (41) being mounted on the inner wall of the top of the absorption tower body (1), and a plurality of flow-guiding fibers being arranged on the surface of the umbrella-shaped fiber board (41); A liquid droplet collecting groove (42), wherein the liquid droplet collecting groove (42) is located at the bottom of the umbrella-shaped fiber board (41); Droplet collecting hoses (43), one end of a plurality of droplet collecting hoses (43) being installed in the droplet collecting tank (42) and the other end being located at the bottom of the absorption tower body (1); A cooling coil (44) is installed in the umbrella-shaped fiberboard (41) and is used to cool the sulfuric acid mist waste gas after absorption.

6. A spray absorption system for sulfuric acid mist, comprising a spray absorption device for sulfuric acid mist as claimed in any one of claims 1 to 5, characterized in that: include: The main body of the spray absorption device comprises an absorption tower body (1), a circulating spray assembly (2), a packing layer (3) and a demister (4); The data acquisition module comprises a plurality of groups of acquisition submodules, each group of acquisition submodules comprises a plurality of sulfuric acid concentration sensors (212) and a plurality of temperature sensors (213), the plurality of sulfuric acid concentration sensors (212) and the plurality of temperature sensors (213) being arranged on the inner wall of the absorption tower body (1), and each group of acquisition submodules corresponds to a group of branch pipes (211); A central judgment module, used for providing a cooling device fault alarm or a spray control prompt based on the detection values ​​of the sulfuric acid concentration sensor (212) and the temperature sensor (213); The spray control module is used to perform spray control based on the judgment result of the central judgment module.

7. A spray absorption system for sulfuric acid mist according to claim 6, characterized in that: The central judgment module issues a fault alarm or a spray control prompt based on the detection values ​​of the sulfuric acid concentration sensor (212) and the temperature sensor (213), including: Calculate the average values ​​of the sulfuric acid concentration sensor (212) and the temperature sensor (213) of each group of acquisition submodules: ;in, is the average detection value of a plurality of sulfuric acid concentration sensors (212) of the x-th group of acquisition submodules, n is the total number of sulfuric acid concentration sensors (212) of the x-th group of acquisition submodules, The detection value of the j-th sulfuric acid concentration sensor (212) of the x-th group acquisition submodule; ;in, is the average detection value of a plurality of temperature sensors (213) of the x-th group of acquisition submodules, is the total number of temperature sensors (213) of the x-th group of acquisition submodules, The detection value of the i-th temperature sensor (213) of the x-th group acquisition submodule; when > When , it is proved that at this time, the branch pipeline (211) corresponding to the xth group of collection submodules of the absorption tower body (1) has a spray failure, and at this time, the spray control module performs spray control; When the average detection values ​​of the temperature sensors of more than three groups of acquisition submodules are greater than the preset temperature average values ​​of the corresponding acquisition submodule groups, it is proved that the cooling device of the circulation system (5) of the absorption tower body (1) has failed, and a cooling device failure alarm prompt is required.

8. A spray absorption system for sulfuric acid mist according to claim 7, characterized in that: The spray control module is used to calculate the supply flow rate and supply pressure required by the branch pipeline (211) corresponding to the xth group of collection submodules based on the detection value of each sulfuric acid concentration sensor (212) of the xth group of collection submodules and the detection value of each temperature sensor (213) of the xth group of collection submodules, and comprises the following steps: Step 1: Based on the sulfuric acid concentration sensor (212) and the temperature sensor (213), the spray failure coefficient of the branch pipeline (211) corresponding to the x-th group of acquisition submodules is calculated: ;in, is the spray failure degree coefficient of the branch pipeline (211) corresponding to the x-th group of collection submodules, is the detection error coefficient of the sulfuric acid concentration sensor (212), is a natural number, with a value of 2.

71. is the detection error coefficient of the temperature sensor (213), express The maximum value in ; Step 2: Based on step 1, calculate the supply flow and supply pressure required by the branch pipeline (211) corresponding to the x-th group of acquisition submodules: ;in, is the supply flow required by the branch pipeline (211) corresponding to the x-th group of acquisition submodules, is the total number of nozzles (20) on all corresponding branch pipes (211), is the preset reference water spray intensity of the nozzle (20), is the reference spray area corresponding to unit sulfuric acid concentration; ; is the supply pressure required by the branch pipeline (211) corresponding to the x-th group of acquisition submodules, is the reference supply pressure of the corresponding branch pipe (211), is the total number of branch pipelines (211) corresponding to the x-th group of acquisition submodules, is the total length of the branch pipeline (211) corresponding to the x-th group of acquisition submodules, It is the reference hydraulic loss per unit length of the absorption liquid during transportation. The preset duration of spraying of the branch pipeline (211) corresponding to the x-th group of collection submodules is set. is the reference flow rate of the absorption liquid in the branch pipeline (211) corresponding to the xth group of collection submodules, is the value of pi, which is 3.

14. is the radius of the branch pipeline (211) corresponding to the x-th group of acquisition submodules.

Images