Efficient acid mist trapping and recycling device for chemical sulfuric acid production

Abstract

The invention provides an efficient acid mist trapping and recycling device for chemical sulfuric acid production, comprising: a support provided with a plurality of mounting spaces distributed along a first direction; the at least two treatment box bodies are respectively arranged in the mounting spaces, and absorbents are accommodated in the treatment box bodies; the treatment mechanism comprises a compressor and a connecting pipe group, the connecting pipe group comprises an input pipeline, a branch pipe group and a recovery pipeline, the input pipeline is connected to the acid mist source and the branch pipe group of the treatment box body on the bottom side, the compressor is arranged on the input pipeline, and the branch pipe group is used for connecting the input pipeline and each adjacent treatment box body; the acid mist is sequentially introduced into the absorbent of each treatment box body step by step along the first direction, and the recovery pipeline is used for connecting the treatment box body on the top side and the recovery container. According to the device, the acid mist trapping and recycling efficiency in chemical sulfuric acid production can be improved, and efficient removal of dust in the production process is achieved.

Description

Technical Field

[0001] This application relates to the field of chemical equipment technology, and more specifically, to a high-efficiency acid mist collection and recovery device for the production of sulfuric acid. Background Technology

[0002] The production of sulfuric acid in the chemical industry generates a large amount of acid mist. This acid mist not only pollutes the environment but also harms equipment and personnel. Therefore, it is necessary to collect and recover the acid mist.

[0003] Currently, to ensure effective acid mist treatment and improve the lifespan and efficiency of core components such as filters and demisters, it is typically necessary to equip the acid mist treatment equipment with an independent dust treatment system upstream to purify the dust and other impurities in the acid mist gas. However, the series connection of these independent dust treatment systems results in complex pipelines, a large footprint, high maintenance costs, and issues such as uneven gas-liquid distribution and excessive pressure drop during commissioning, affecting the treatment effect and increasing production costs. Summary of the Invention

[0004] This application provides an efficient acid mist capture and recovery device for the production of chemical sulfuric acid, which can achieve efficient capture and recovery of acid mist in the production of chemical sulfuric acid, as well as efficient removal of dust in the acid mist gas. It has a compact layout, small footprint, and low cost.

[0005] This application provides an efficient acid mist capture and recovery device for the production of sulfuric acid in the chemical industry, comprising: a support frame with multiple installation spaces distributed along a first direction; at least two processing chambers, each disposed in one of the installation spaces, the interior of each processing chamber containing an absorbent; and a processing mechanism, comprising a compressor and a connecting pipe assembly, the connecting pipe assembly comprising an input pipe, a branch pipe assembly, and a recovery pipe, the input pipe being connected to the acid mist source and the branch pipe assembly of the processing chamber at the bottom, the compressor being disposed on the input pipe, the branch pipe assembly being used to connect the input pipe to each adjacent processing chamber, so that the acid mist is sequentially passed into the absorbent of each processing chamber along the first direction, and the recovery pipe being used to connect the processing chamber at the top to a recovery container.

[0006] In some embodiments, the processing box includes a box body and a closing plate, the interior of the box body is provided to form a mounting cavity with an opening structure, the processing mechanism is disposed in the mounting cavity, and the closing plate is detachably and sealingly connected to the opening structure.

[0007] In some embodiments, the system further includes a liquid pump, a liquid supply line, and a solenoid valve. The liquid supply line is located at the bottom of the processing tank and connects the processing tank to the absorbent container. The solenoid valve and the liquid pump are located on the liquid supply line. The liquid pump and the solenoid valve are electrically connected to the PLC control system.

[0008] In some embodiments, the branch pipe assembly includes a dispersion pipe, at least one output pipe, and at least one delivery pipe. The output pipe is connected to the delivery pipe, and the delivery pipe is connected to the dispersion pipe of an adjacent processing chamber. The dispersion pipe is provided with a plurality of diffusion nozzles, at least the spray end of which is immersed in the absorbent to disperse the acid mist into the absorbent. The delivery pipe is connected to two adjacent processing chambers so that the acid mist flows sequentially through each processing chamber for gradual delivery.

[0009] In some embodiments, the processing mechanism further includes a plurality of impurity conveying devices disposed at the lower part of the dispersing gas pipe. The impurity conveying device includes a conveyor belt, two support shafts and four support rollers. The conveyor belt is inclined from top to bottom and is circumferentially distributed on the two support shafts. The four support rollers are respectively disposed at the ends of the two support shafts.

[0010] In some embodiments, the protruding end of the support shaft passes through the processing housing and is sealed to the processing housing; it also includes a manual rotating wheel, which is disposed at the protruding end of the support shaft for rotating the support shaft.

[0011] In some embodiments, a drain box is further included, which is disposed on the outer side wall of the closed plate and received at the output end of the impurity conveying device. The drain box includes a base and a cover. The base has a drain hole communicating with the box body in a horizontal direction. The cover is detachably and sealed to the base. The upper end of the conveyor belt extends out of the base, and the bottom surface of the conveyor belt abuts against the bottom wall of the drain hole of the base.

[0012] In some embodiments, the device further includes a partition that divides the mounting cavity into a first mounting cavity and a second mounting cavity that are connected at the top; the dispersing air pipes in the processing box are in two sets, respectively disposed in the first mounting cavity and the second mounting cavity, the dispersing air pipes include a main pipe and a plurality of branch pipes connected to the main pipe, the main pipe extends along a second direction, and the branch pipes are distributed on both sides of the main pipe along a third direction, the conveying air pipes include a conveying main pipe and two conveying branch pipes, the two ends of the conveying branch pipes along the first direction are respectively connected to the conveying main pipe and the main pipe.

[0013] In some embodiments, a demister is also included, which is disposed at the outlet end of the recovery pipeline and is used to filter out moisture in the acid mist gas.

[0014] In some embodiments, a pH sensor disposed within the tank body is further included. The pH sensor is electrically connected to the PLC control system to monitor the acidity or alkalinity of the absorbent in real time and to control the liquid pump and the solenoid valve in conjunction with it.

[0015] In this embodiment, a processing mechanism is installed inside the processing chamber, which is filled with an absorbent. After the processing mechanism is connected to a compressor, the compressor draws acid mist into the processing chamber. The acid mist reacts with the absorbent, achieving acid mist treatment and producing a recyclable liquid substance. Simultaneously, the compressor delivers the acid mist to the absorbent liquid. Impurities mixed in the gas increase in mass upon contact with the liquid and separate from the gas, settling at the bottom of the processing chamber, thus removing dust. This reduces the number of devices required for acid mist treatment, improves the efficiency of acid mist collection and recovery as well as impurity treatment, and lowers the cost of acid mist treatment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an efficient acid mist collection and recovery device for the production of sulfuric acid in the chemical industry, provided in some embodiments of this application;

[0018] Figure 2 A side view of an efficient acid mist collection and recovery device for the production of sulfuric acid in the chemical industry, provided in some embodiments of this application;

[0019] Figure 3 This is an internal schematic diagram of an acid mist high-efficiency capture and recovery device for the production of chemical sulfuric acid provided in some embodiments of this application;

[0020] Figure 4 This is a schematic diagram of the support structure in an acid mist high-efficiency capture and recovery device for chemical sulfuric acid production provided in some embodiments of this application;

[0021] Figure 5 This is a schematic diagram of the structure of the first chamber in an acid mist high-efficiency capture and recovery device for the production of sulfuric acid in the chemical industry, provided in some embodiments of this application;

[0022] Figure 6Another structural schematic diagram of the first chamber in an acid mist high-efficiency capture and recovery device for chemical sulfuric acid production provided in some embodiments of this application;

[0023] Figure 7 A schematic diagram of the internal structure of the first chamber in an efficient acid mist collection and recovery device for chemical sulfuric acid production provided in some embodiments of this application;

[0024] Figure 8 This is a schematic diagram of the closed plate in an acid mist high-efficiency capture and recovery device for chemical sulfuric acid production provided in some embodiments of this application;

[0025] Figure 9 This is a schematic diagram of the structure of the first processing unit in an acid mist high-efficiency capture and recovery device for chemical sulfuric acid production provided in some embodiments of this application;

[0026] Figure 10 This is a schematic diagram of the second processing unit in an acid mist high-efficiency capture and recovery device for the production of chemical sulfuric acid provided in some embodiments of this application.

[0027] The attached figures are labeled as follows:

[0028] 1-First processing chamber; 2-Second processing chamber; 3-Support; 4-Compressor; 5-Liquid pump; 6-First processing mechanism; 7-Second processing mechanism; 8-Input pipeline; 9-Recovery pipeline;

[0029] 11-Box body; 12-Closing plate; 13-Through hole; 14-Solenoid valve; 15-Partition; 16-Box base; 17-Drain hole; 18-Box cover; 31-Support frame; 32-Vertical pipe; 61-First conveyor belt; 62-First dispersion air pipe; 63-First output air pipe; 64-First input air pipe; 71-Second conveyor belt; 72-Second dispersion air pipe; 73-Second output air pipe;

[0030] X - First direction; Y - Second direction; Z - Third direction. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., are used to distinguish different objects, not to describe a particular order or hierarchy.

[0033] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0036] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0037] In this application, "multiple" means two or more (including two).

[0038] Please refer to Figures 1 to 3 This application provides an efficient acid mist collection and recovery device for the production of sulfuric acid in the chemical industry, including a support 3, multiple processing chambers and processing mechanisms. The support 3 is provided with multiple installation spaces distributed along a first direction X. The processing chambers are installed in the installation spaces one by one, and the interior of the processing chambers contains an absorbent.

[0039] The processing unit includes a compressor 4 and a connecting pipe assembly. The connecting pipe assembly includes an input pipe 8, a branch pipe assembly, and a recovery pipe 9. The input pipe 8 is connected to the acid mist source and the processing chamber on the bottom side. The compressor 4 is located on the input pipe 8. The branch pipe assembly connects the input pipe 8 to each adjacent processing chamber, so that the acid mist is sequentially introduced into the absorbent of each processing chamber along the first direction X. The recovery pipe 9 connects the processing chamber on the top side to the external recovery container to realize the recovery of liquid substances generated after the acid mist is absorbed.

[0040] The bottom of the treatment mechanism is submerged in the absorbent, and the air inlet of the treatment mechanism is connected to the output of the compressor 4. The compressor 4 is located on the outside of the bracket 3 and is connected to the acid mist source. Therefore, when the compressor 4 is working, acid mist can be input into the treatment mechanism, and the acid mist output from the treatment mechanism comes into contact with the absorbent.

[0041] For example, when the acid mist to be treated is hydrochloric acid mist or nitric acid mist, the absorbent can be a 4%-16% NaOH solution or a 10% Na2CO3 solution. If the acid mist to be treated is sulfuric acid mist, the absorbent can be a Ca(OH)2 emulsion. The absorbent reacts with the acid mist to generate the corresponding recyclable substances, thus achieving the treatment of the acid mist. In addition, the dust mixed in the acid mist increases in mass after contacting the absorbent, detaches from the gas and remains in the liquid, and then settles at the bottom of the treatment chamber, thus cleaning the dust in the gas. This eliminates the need for additional dust removal equipment and reduces the cost of acid mist treatment.

[0042] like Figure 3 , Figure 9 , Figure 10 As shown. Exemplarily, the bracket 3 has two installation spaces, and each installation space is equipped with a processing box, namely a first processing box 1 and a second processing box 2. In order for the acid mist to be treated to flow through the first processing box 1 and the second processing box 2 in sequence, a first processing mechanism 6 and a second processing mechanism 7 are respectively provided inside the first processing box 1 and the second processing box 2. The first processing mechanism 6 and the second processing mechanism 7 share a compressor 4, an input pipe 8 and a recovery pipe 9. The input pipe 8 is located at the bottom of the second processing mechanism 7, and the compressor 4 is located on the input pipe 8. The first processing mechanism 6 and the second processing mechanism 7 are respectively provided with branch pipe groups, which are located above the absorbent liquid surface. The output end of the compressor 4 is connected to the input pipe 8. The acid mist output from the compressor 4 flows into the second processing box 2 and comes into contact with the absorbent to achieve initial treatment. The second output pipe 73 is connected to the branch pipe group, which respectively supplies acid mist into the first treatment box 1 at the top. The gas flowing into the first treatment box 1 reacts with the absorbent to neutralize the acid mist again.

[0043] The acid mist collection and recovery device for chemical sulfuric acid production provided in this application, by setting up a treatment mechanism inside a treatment tank and adding an absorbent to the treatment tank, allows the compressor 4 to draw acid mist into the treatment tank after the treatment mechanism is connected to the compressor 4. The acid mist reacts with the absorbent to achieve acid mist treatment, while simultaneously producing a recyclable liquid substance. This device has a compact layout and improves the efficiency of acid mist collection and recovery in chemical sulfuric acid production.

[0044] like Figure 4 As shown. In one specific embodiment, the bracket 3 includes multiple vertically parallel support frames 31, and vertical tubes 32 are fixedly installed at the corners between two adjacent support frames 31. Therefore, when the support frames 31 are stably installed, multiple installation spaces are formed by the cooperation of the multiple support frames 31, and the processing box is set in the installation space.

[0045] like Figure 5 As shown. In one specific embodiment, the processing box includes a box body 11 and a closing plate 12. The box body 11 has an internal enclosure forming a mounting cavity. An opening structure is provided on one side of the mounting cavity. The processing mechanism is disposed in the mounting cavity. The closing plate 12 and the opening structure can be detachably and sealed to the box body 11 by bolts, sealing rings and other components, thereby forming a sealed mounting cavity. The input pipe 8, the branch pipe group and the recovery pipe 9 are all disposed on the box body 11.

[0046] like Figure 2 and Figure 6 As shown. Further, it also includes a liquid pump 5, a liquid supply pipeline, and a solenoid valve 14. The liquid supply pipeline is located at the bottom of the treatment tank and connects the treatment tank to an external absorbent container. The solenoid valve 14 and the liquid pump 5 are located on the liquid supply pipeline, and the ends of the liquid pump 5 and the solenoid valve 14 are detachably connected. The solenoid valve 14 is located at the bottom of the tank body 11 and is connected to the liquid pump 5 for adding, discharging, or circulating the absorbent. The liquid pump 5 and the solenoid valve 14 are electrically connected to a PLC control system, thereby automating the process of adding, discharging, or circulating the absorbent.

[0047] Furthermore, a pH sensor is installed inside the treatment chamber to monitor the acidity or alkalinity of the absorbent in real time, and works in conjunction with the liquid pump 5 to add or remove the absorbent as needed. The pH sensor can be connected to a PLC control system to automatically control the addition and removal of the absorbent.

[0048] In one specific embodiment, the branch pipe assembly includes a dispersion pipe, at least one delivery pipe, and at least one output pipe. The output pipe is connected to the delivery pipe, and the delivery pipe is connected to the dispersion pipe of an adjacent processing chamber. The dispersion pipe is provided with multiple diffusion nozzles, at least the spraying end of which is immersed in the absorbent to disperse the acid mist into the absorbent. The delivery pipe is connected to two adjacent processing chambers so that the acid mist flows through each processing chamber sequentially for gradual delivery.

[0049] The structure of the connecting pipe assembly will be explained below using two vertically distributed processing boxes as an example.

[0050] The connecting pipe assembly is distributed within the first processing unit 6 and the second processing unit 7. The connecting pipe assembly includes a first dispersing gas pipe 62 and a second dispersing gas pipe 72, both submerged in the absorbent. Above the first dispersing gas pipe 62 and within the same processing chamber, is a first conveying gas pipe. Similarly, above the second dispersing gas pipe 72 and within the same processing chamber, is a second output gas pipe 73. Both the first dispersing gas pipe 62 and the second output gas pipe 73 are located above the absorbent liquid surface. The second output gas pipe 73 is connected to the first input gas pipe 64, and the top of the first input gas pipe 64 is higher than the absorbent liquid surface, thus achieving communication between the lower processing chamber and the upper first dispersing pipe. Gas in the lower processing chamber can flow into the first dispersing pipe under pressure, and the gas output from the first dispersing pipe reacts with the absorbent, further treating the acid mist.

[0051] In addition, a first output air pipe 63 is disposed above the first dispersion air pipe 62 and located in the same processing chamber as it. Similarly, a second output air pipe 73 is disposed above the second dispersion air pipe 72 and located in the same processing chamber as it. Both the first dispersion air pipe 62 and the second output air pipe 73 are located above the absorbent liquid surface, and the second output air pipe 73 is connected to the first input air pipe 64.

[0052] To facilitate the removal of moisture from the acid mist gas, a demister can be installed at the outlet of the recovery pipe 9. The recovery pipe 9 is connected to the demister. After purification, the gas passes through a baffle demister or a wire mesh demister, where droplets are captured by inertial collision and interception, removing moisture from the gas and preventing liquid from being discharged. If the first output gas pipe 63 is connected to another processing unit, the acid mist can be treated again.

[0053] Since the liquid pump 5 and the solenoid valve 14 are detachably connected at each end, when cleaning impurities, the liquid pump 5 and the solenoid valve 14 can connect two independent spaces in the same processing chamber, and the absorbent in one independent space can be pumped to the other independent space under the action of the liquid pump 5.

[0054] In addition, to facilitate the cleaning of impurities at the bottom of the processing device, the processing mechanism also includes multiple impurity conveying devices. The impurity conveying devices are located at the bottom of the dispersion gas pipe and include a conveyor belt, two support shafts and four support rollers. The conveyor belt is inclined from top to bottom and is distributed circumferentially on the two support shafts. The two support rollers are respectively located at the ends of the support shafts and supported on the bottom surface of the processing box. The ends of the support shafts penetrate the processing box and are mechanically sealed to the processing box.

[0055] A manual turntable is provided at one of the extended ends of the support shaft, allowing the operator to rotate it. When it is necessary to clean impurities, the closing plate 12 is opened, and the manual turntable is rotated. The turntable drives the support shaft to rotate, which in turn drives the conveyor belt to rotate, thus removing the impurities that have settled on the conveyor belt.

[0056] like Figure 8 As shown, in one specific embodiment, the processing box is provided with a drain box, which is specifically located on the outer wall of the closed plate 12 and is connected to the output end of the impurity conveying device. The drain box includes a box base 16 and a box cover 18. A drain hole 17 is provided on the box base 16. The drain hole 17 is opened in the horizontal direction on the box base 16 and is connected to the box body 11. The box cover 18 can be detachably and sealed to the box base 16 by bolts and sealing gaskets.

[0057] To facilitate the discharge of impurities, the upper end of the conveyor belt extends into the drain hole 17 of the box base 16, and the bottom surface of the conveyor belt abuts against the bottom wall of the drain hole 17 of the box base 16. Figure 8 As shown, when it is necessary to clean impurities, the box cover 18 can be removed after the absorbent is transferred, so that the drain hole of the box base 16 is exposed, and the top of the conveyor belt extends out of the drain hole 17, while the bottom of the conveyor belt contacts the box base 16. This arrangement can scrape off the impurities adhering to the conveyor belt during the controlled rotation of the conveyor belt, thereby achieving the cleaning of impurities.

[0058] Continue to refer to Figure 7 In one specific embodiment, a partition 15 is provided inside the processing box, which divides the installation cavity inside the processing box into a first installation cavity and a second installation cavity. The two installation cavities are connected at the top, and a conveyor belt is provided in each installation cavity. The dispersing air pipes inside the processing box are in two sets, respectively located in the first installation cavity and the second installation cavity. The dispersing air pipes include a main pipe and multiple branch pipes connected to the main pipe. The main pipe extends along the second direction Y, and the branch pipes are distributed on both sides of the main pipe along the third direction Z. The conveying air pipes include a conveying main pipe and two conveying branch pipes. The two ends of the conveying branch pipes along the first direction X are respectively connected to the conveying main pipe and the main pipe.

[0059] It should be noted that in the embodiments of this application, the first direction X, the second direction Y, and the third direction Z are arranged to intersect each other. For example, the first direction can be... Figure 1 In the X direction, the second direction can be Figure 1 In the Y direction, the third direction can be Figure 1 The Z direction in the equation.

[0060] like Figure 9 and Figure 10 As shown. Exemplarily, the first and second mounting cavities contain spaces for the absorbent, and are respectively equipped with two sets of first dispersing air pipes 62 and second dispersing air pipes 72. The first dispersing air pipes 62 and second dispersing air pipes 72 are respectively positioned above the first conveyor belt 61 and the second conveyor belt 71, and are submerged in the absorbent. The ends of the two sets of first dispersing air pipes 62 are connected to a first input air pipe 64, and the two sets of second dispersing air pipes 72 are connected to a second input air pipe. The first input air pipe 64, the first output air pipe 63, the second output air pipe 73, and the input pipe 8 are all sealed through the through hole 13 of the processing chamber.

[0061] The first processing chamber 1 and the second processing chamber 2 are respectively equipped with a first processing mechanism 6 and a second processing mechanism 7, each including two sets of inclined first conveyor belts 61 and second conveyor belts 71. The support rollers at the ends of the two sets of first conveyor belts 61 and second conveyor belts 71, located within the same processing chamber, are sleeved on the same support shaft. The mechanical seal at the end of the first support shaft penetrates through the first processing chamber 1 and the second processing chamber 2. Furthermore, the lower ends of the first conveyor belts 61 and second conveyor belts 71 are close to the rear sidewall of the processing chamber, and their upper ends extend into the closing plate 12. By changing the state of the closing plate 12 and rotating the support shaft, the conveyor belts can be rotated, thereby outputting impurities deposited on the conveyor belts and achieving impurity cleaning.

[0062] Therefore, in this solution, the internal installation cavities of the processing box are divided by the partition 15 and conveyor belts are set separately. The absorbent can be transferred from one installation cavity to another through the liquid supply pipeline, liquid pump 5 and solenoid valve 14. After that, the impurities falling on the conveyor belt can be driven out of the box base 16 by operating the manual turn wheel to rotate the conveyor belt.

[0063] The above provides a detailed description of the high-efficiency acid mist collection and recovery device for the production of sulfuric acid in the chemical industry provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A high-efficiency acid mist collection and recovery device for the production of sulfuric acid in the chemical industry, characterized in that, include: The bracket (3) is provided with multiple installation spaces distributed along the first direction; At least two processing boxes are respectively disposed in each of the installation spaces, and the interior of each processing box contains an absorbent; The processing mechanism includes a compressor (4) and a connecting pipe assembly. The connecting pipe assembly includes an input pipe (8), a branch pipe assembly, and a recovery pipe (9). The input pipe (8) is connected to the branch pipe assembly of the acid mist source and the bottom processing box. The compressor (4) is located on the input pipe (8). The branch pipe assembly is used to connect the input pipe (8) to each adjacent processing box so that the acid mist is sequentially introduced into the absorbent of each processing box along the first direction. The recovery pipe (9) is used to connect the top processing box and the recovery container.

2. The high-efficiency acid mist collection and recovery device for chemical sulfuric acid production according to claim 1, characterized in that, The processing box includes a box body (11) and a closing plate (12). The interior of the box body (11) is enclosed to form an installation cavity with an opening structure. The processing mechanism is disposed in the installation cavity. The closing plate (12) is detachably and sealed to the opening structure.

3. The high-efficiency acid mist collection and recovery device for chemical sulfuric acid production according to claim 2, characterized in that, It also includes a liquid pump (5), a liquid supply pipeline and a solenoid valve (14). The liquid supply pipeline is located at the bottom of the processing tank and connects the processing tank to the absorbent container. The solenoid valve (14) and the liquid pump (5) are located on the liquid supply pipeline. The liquid pump (5) and the solenoid valve (14) are electrically connected to the PLC control system.

4. The high-efficiency acid mist collection and recovery device for chemical sulfuric acid production according to claim 2, characterized in that, The branch pipe assembly includes a dispersion gas pipe, at least one output gas pipe, and at least one delivery gas pipe. The output gas pipe is connected to the delivery gas pipe, and the delivery gas pipe is connected to the dispersion gas pipe of an adjacent processing chamber. The dispersion gas pipe is provided with multiple diffusion nozzles, and at least the spray end of each diffusion nozzle is immersed in the absorbent to disperse the acid mist into the absorbent. The delivery gas pipe is connected to two adjacent processing chambers so that the acid mist flows through each processing chamber sequentially for gradual delivery.

5. The high-efficiency acid mist collection and recovery device for chemical sulfuric acid production according to claim 4, characterized in that, The processing mechanism also includes multiple impurity conveying devices, which are located at the lower part of the dispersing gas pipe. Each impurity conveying device includes a conveyor belt, two support shafts, and four support rollers. The conveyor belt is inclined from top to bottom and is circumferentially distributed on the two support shafts. The four support rollers are respectively located at the ends of the two support shafts.

6. The high-efficiency acid mist collection and recovery device for chemical sulfuric acid production according to claim 5, characterized in that, The protruding end of the support shaft passes through the processing box and is sealed to the processing box. It also includes a manual turntable, which is located at the extended end of the support shaft for rotating the support shaft.

7. The high-efficiency acid mist collection and recovery device for chemical sulfuric acid production according to claim 5, characterized in that, It also includes a sewage box, which is disposed on the outer side wall of the closed plate (12) and is connected to the output end of the impurity conveying device. The sewage box includes a box base (16) and a box cover (18). The box base (16) is provided with a sewage hole (17) communicating with the box body (11) in the horizontal direction. The box cover (18) is detachably and sealed to the box base (16). The upper end of the conveyor belt extends out of the box base (16), and the bottom surface of the conveyor belt abuts against the bottom wall of the drain hole (17) of the box base (16).

8. The high-efficiency acid mist collection and recovery device for chemical sulfuric acid production according to claim 4, characterized in that, The device further includes a partition (15) that divides the mounting cavity into a first mounting cavity and a second mounting cavity that are connected at the top. The dispersion air pipes inside the processing chamber are in two sets, respectively located in the first mounting cavity and the second mounting cavity. Each dispersion air pipe includes a main pipe and multiple branch pipes connected to the main pipe. The main pipe extends along a second direction, and the branch pipes are distributed on both sides of the main pipe along a third direction. The delivery air pipe includes a delivery main pipe and two delivery branch pipes. The two ends of the delivery branch pipes along the first direction are respectively connected to the delivery main pipe and the main pipe.

9. The high-efficiency acid mist collection and recovery device for chemical sulfuric acid production according to claim 1, characterized in that, It also includes a demister, which is installed at the outlet of the recovery pipeline (9) and is used to filter out moisture in the acid mist gas.

10. The high-efficiency acid mist collection and recovery device for chemical sulfuric acid production according to claim 3, characterized in that, It also includes a pH sensor installed in the main body (11) of the box, which is electrically connected to the PLC control system to monitor the acidity and alkalinity of the absorbent in real time, and to control the liquid pump (5) and the solenoid valve (14) in conjunction.

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