Sulfuric acid auxiliary purification mechanism in sulfuric acid production

Abstract

The utility model belongs to the technical field of sulfuric acid purification, and particularly relates to an auxiliary sulfuric acid purification mechanism in sulfuric acid production, which comprises a reaction kettle, a sealing component is arranged at the top end of the reaction kettle, an outer pipe is fixedly connected to the middle end of the inner side of the reaction kettle, and an inner pipe is fixedly connected to the inner side of the outer pipe. A sealing through groove is formed between the outer pipe and the inner pipe, evenly-distributed discharging openings are formed in the inner side of the outer pipe, and a control assembly is arranged on the outer side of the outer pipe. According to the sulfuric acid auxiliary purification mechanism in the sulfuric acid production, a calcium hydroxide solution is conveyed into the through groove between the outer pipe and the inner pipe through the control valve at the top end and the joint, and is uniformly conveyed into a reaction kettle through the uniformly distributed discharge holes formed in the inner side of the outer pipe; the calcium hydroxide solution reacts with the sulfuric acid, so that the contact area of the two solutions is increased, and alkaline impurities in the sulfuric acid can be quickly removed.

Description

Technical Field

[0001] This utility model relates to the field of sulfuric acid purification technology, and in particular to an auxiliary purification mechanism for sulfuric acid production. Background Technology

[0002] During sulfuric acid production, emissions of pollutants such as sulfur dioxide, sulfuric acid mist, and nitrogen oxides can impact the environment and equipment safety. Therefore, auxiliary purification technologies are crucial in this process. These technologies effectively remove harmful gases and particulate matter, reducing pollution emissions and protecting the environment. Furthermore, purification equipment can improve production efficiency, extend equipment lifespan, and ensure operator safety. With increasingly stringent environmental regulations, future purification technologies in sulfuric acid production will be more efficient, energy-saving, and compliant with stricter environmental standards.

[0003] However, in the actual use of existing solutions, chemical reactions are used to make dissolved impurities form insoluble substances and separate them through precipitation. For example, calcium hydroxide (lime water) can be used to neutralize some metal ions or ammonia nitrogen compounds dissolved in sulfuric acid to form precipitates. However, if the calcium hydroxide solution is directly transported into the reaction vessel, the reaction rate may be slow due to uneven mixing of the two solutions, thus reducing the purification speed.

[0004] Therefore, this utility model provides an auxiliary purification mechanism for sulfuric acid production. Utility Model Content

[0005] The purpose of this invention is to solve the problem that in the prior art, directly feeding calcium hydroxide solution into the reaction vessel may result in a slow reaction rate and reduced purification speed due to uneven mixing of the two solutions. Therefore, this invention proposes a sulfuric acid auxiliary purification mechanism for sulfuric acid production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A sulfuric acid auxiliary purification mechanism for sulfuric acid production includes a reaction vessel, a sealing assembly at the top of the reaction vessel, an outer tube fixedly connected to the middle of the inner side of the reaction vessel, an inner tube fixedly connected to the inner side of the outer tube, a sealing groove formed between the outer tube and the inner tube, uniformly distributed discharge ports opened on the inner side of the outer tube, and a control assembly provided on the outer side of the outer tube.

[0008] As a preferred technical solution of this application, the sealing assembly includes a cover plate fixedly connected to the top of the reactor, a uniformly distributed raw material pipe fixedly connected to the top of the cover plate, and an observation window fixedly connected to the front side of the top of the reactor.

[0009] As a preferred technical solution of this application, the control component includes a connector fixedly connected to the outside of the outer tube and facing each other vertically, and a control valve is fixedly connected to the outer end of the connector.

[0010] As a preferred technical solution of this application, a delivery pump is fixedly connected to the left side of the bottom end of the inner tube, and a connecting pipe is fixedly connected to the right side of the inner tube.

[0011] As a preferred technical solution of this application, a machine cover is fixedly connected to the left side of the top of the connecting pipe, the machine cover is fixedly connected to the top of the cover plate, a water outlet pipe is fixedly connected to the top of the machine cover, an impeller is rotatably connected to the inside of the machine cover, a transmission rod is fixedly connected to the bottom of the impeller, a mixing frame with opposite sides is fixedly connected to the outside of the bottom of the transmission rod, and the bottom of the transmission rod is rotatably connected to the bottom of the inside of the reaction vessel.

[0012] As a preferred technical solution of this application, a discharge pipe is fixedly connected to the right side of the bottom end of the reactor.

[0013] Compared with the prior art, this utility model provides a sulfuric acid auxiliary purification mechanism in sulfuric acid production, which has the following beneficial effects:

[0014] 1. The sulfuric acid auxiliary purification mechanism in sulfuric acid production described in this utility model delivers calcium hydroxide solution into a channel between the outer and inner pipes via a top control valve and connector. The solution is then uniformly delivered into the reaction vessel through evenly distributed outlets on the inner side of the outer pipe, allowing the calcium hydroxide solution to react with sulfuric acid. This increases the contact area between the two solutions, which helps to quickly remove alkaline impurities from the sulfuric acid. Simultaneously, it ensures the smooth progress of the reaction within the entire reaction vessel, which is crucial for improving product consistency and quality. Furthermore, the delivery method allows for precise control of the flow rate and concentration of the calcium hydroxide solution, making its reaction with impurities in the sulfuric acid more efficient and avoiding waste of calcium hydroxide.

[0015] 2. The sulfuric acid auxiliary purification mechanism in sulfuric acid production described in this utility model involves an exothermic reaction between the two solutions. The introduction of cold water into the inner tube helps absorb some of the heat, lowering the temperature of the reaction system and preventing excessive heat buildup. This avoids overly vigorous reactions or overheating of the equipment. The role of the cold water is to maintain the reaction temperature within a controllable range, ensuring a stable reaction process.

[0016] 3. The sulfuric acid auxiliary purification mechanism in sulfuric acid production described in this utility model uses cold water flowing inside the inner tube to drive the impeller to rotate, which is then discharged through the outlet pipe. The impeller, via a transmission rod, drives the mixing frame to rotate, thereby ensuring thorough mixing of the sulfuric acid and calcium hydroxide solution in the reactor and guaranteeing uniform distribution of the reactants. This not only increases the reaction rate but also ensures sufficient contact between the calcium hydroxide solution and impurities in the sulfuric acid, thus improving the purification effect. It helps reduce the phenomenon of excessively fast or slow local reactions, avoids the accumulation of precipitates or crystals during the reaction, and ensures efficient reaction. The rotation of the mixing frame also helps to make the product precipitation more uniform, which is beneficial for subsequent separation and processing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the reactor in this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the outer tube in this utility model;

[0020] Figure 4 yes Figure 3 Enlarged view of a portion of point A in the middle;

[0021] Figure 5 This is a partial three-dimensional structural schematic diagram and enlarged view of this utility model.

[0022] In the picture:

[0023] 1. Reactor; 11. Cover plate; 12. Raw material pipe; 13. Observation window; 14. Discharge pipe; 2. Outer pipe; 21. Discharge port; 22. Connector; 23. Control valve; 24. Inner pipe; 25. Transfer pump; 3. Connecting pipe; 31. Machine cover; 32. Impeller; 33. Drive rod; 34. Water outlet pipe; 35. Mixing rack. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Example:

[0026] Reference Figure 1-5A sulfuric acid auxiliary purification mechanism for sulfuric acid production includes a reactor 1. A sealing component is provided at the top of the reactor 1. An outer tube 2 is fixedly connected to the middle of the inner side of the reactor 1, and the reactor 1 supports and fixes the outer tube 2. An inner tube 24 is fixedly connected to the inner side of the outer tube 2, and a sealing groove is formed between the outer tube 2 and the inner tube 24. The outer tube 2 fixes the inner tube 24. Due to the difference in diameter between the outer tube 2 and the inner tube 24, a groove is formed. The top and bottom of the groove are connected. A uniformly distributed discharge port 21 is opened on the inner side of the outer tube 2, and a control component is provided on the outer side of the outer tube 2.

[0027] The sealing assembly includes a cover plate 11 fixedly connected to the top of the reactor 1, which supports and fixes the cover plate 11 and seals the top of the reactor 1. A uniformly distributed raw material pipe 12 is fixedly connected to the top of the cover plate 11, and the reactor 1 supports and fixes multiple raw material pipes 12. By setting multiple raw material pipes 12, sulfuric acid can be injected into the reactor 1 simultaneously through multiple raw material pipes 12, thereby improving the overall production efficiency. An observation window 13 is fixedly connected to the front side of the top of the reactor 1, which supports and fixes the observation window 13. The reaction process inside the reactor 1 can be monitored in real time through the observation window 13.

[0028] The control assembly includes a connector 22 fixedly connected to the outside of the outer tube 2 and positioned vertically opposite each other. The connector 22 is fixedly connected to the outer tube 2. A control valve 23 is fixedly connected to the outer end of the connector 22. The control valve 23 can control the opening and closing of one end of the connector 22 independently. The control valve 23 can connect the external calcium hydroxide solution delivery pipe to the connector 22. Thus, by opening the control valve 23, calcium hydroxide solution can be delivered into the connector 22 and delivered into the channel between the outer tube 2 and the inner tube 24 through the connector 22. The solution is then delivered into the reactor 1 through the outlet 21, where the calcium hydroxide solution reacts with sulfuric acid.

[0029] A delivery pump 25 is fixedly connected to the left side of the bottom end of the inner tube 24. The delivery pump 25 is fixed through the inner tube 24. The delivery pump 25 is connected to the outside of the cold water delivery pipe. The delivery pump 25 draws cold water from the cold water delivery pipe and delivers it into the inner tube 24. A connecting pipe 3 is fixedly connected to the right side of the inner tube 24. The connecting pipe 3 is fixed through the inner tube 24.

[0030] A housing 31 is fixedly connected to the top left of the connecting pipe 3. The housing 31 is connected to the water inlet of the connecting pipe 3, allowing cold water from the inner pipe 24 to be transported into the housing 31. The housing 31 is fixedly connected to the top of the cover plate 11, securing the housing 31. A water outlet pipe 34 is fixedly connected to the top of the housing 31, allowing the cold water inside the housing 31 to be discharged. An impeller 32 is rotatably connected to the inside of the housing 31. The housing 31 limits the movement of the impeller 32 within the housing 31, causing it to rotate. The cooling water supplied during the discharge process drives the impeller 32 to rotate. The impeller 32 is fixedly connected to a transmission rod 33 at its bottom end. The impeller 32 fixes the transmission rod 33 and drives the transmission rod 33 to rotate. The bottom outer side of the transmission rod 33 is fixedly connected to an upper and lower opposing mixing frame 35. The transmission rod 33 fixes the upper and lower opposing mixing frame 35 and drives the mixing frame 35 to rotate, thereby stirring and mixing the two solutions in the reactor 1. The bottom end of the transmission rod 33 is rotatably connected to the bottom inner side of the reactor 1. The reactor 1 limits the bottom end of the transmission rod 33 to increase the stability of the transmission rod 33 and the mixing frame 35 during rotation.

[0031] A discharge pipe 14 is fixedly connected to the bottom right side of the reactor 1. The discharge pipe 14 is fixed by the reactor 1, and the solution after the reaction can be discharged through the discharge pipe 14.

[0032] Specifically, in the sulfuric acid production process, the auxiliary purification mechanism works as follows: First, sulfuric acid is simultaneously injected into the reactor 1 through multiple raw material pipes 12 at the top of the cover plate 11. After the sulfuric acid injection is complete, cold water is collected from the external cold water supply pipe by the transfer pump 25 and transported into the inner pipe 24. Then, the cold water is transported through the inner pipe 24 into the connecting pipe 3, and then into the machine shroud 31 through the connecting pipe 3, driving the impeller 32 inside the machine shroud 31 to rotate. At the same time, the impeller 32 drives the mixing frame 35 to rotate via the transmission rod 33, first purifying the sulfuric acid... The sulfuric acid solution is stirred and mixed. Then, by opening the top control valve 23, the calcium hydroxide solution is conveyed through the external calcium hydroxide solution delivery pipe into the channel between the outer pipe 2 and the inner pipe 24 via the connector 22. The sulfuric acid solution in the channel is squeezed out and the calcium hydroxide solution is evenly conveyed into the reaction vessel 1 through the discharge port 21 opened on the inner side of the outer pipe 2. At the same time, the calcium hydroxide solution and the sulfuric acid solution are stirred and mixed by the mixing rack 35 to make the calcium hydroxide solution and the sulfuric acid solution evenly mixed, thereby improving the reaction rate of the calcium hydroxide solution and the sulfuric acid solution.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sulfuric acid production auxiliary purification mechanism of sulfuric acid, comprising a reaction kettle (1), characterized in that, The reaction kettle (1) top is provided with sealing assembly, the reaction kettle (1) inside middle end fixedly connected with outer tube (2), the outer tube (2) inside fixedly connected with inner tube (24), the outer tube (2) with the inner tube (24) between form sealed groove, the outer tube (2) inside is set out evenly distributed discharge port (21), the outer tube (2) outside is provided with control assembly.

2. A mechanism for auxiliary purification of sulfuric acid in its production according to claim 1, characterized by the fact that The sealing assembly includes a cover plate (11) fixedly connected to the top end of the reaction kettle (1), and the cover plate (11) is fixedly connected with evenly distributed raw material pipes (12) on the top end. The top end of the reaction kettle (1) is fixedly connected with an observation window (13) on the front side.

3. A mechanism for auxiliary purification of sulfuric acid in the production of sulfuric acid according to claim 2, characterized in that, The control assembly includes a joint (22) fixedly connected to the outer side of the outer tube (2) and opposite to each other, and the joint (22) is fixedly connected with a control valve (23) on the outer end.

4. A mechanism for auxiliary purification of sulfuric acid in the production of sulfuric acid according to claim 3, characterized in that, The inner tube (24) is fixedly connected with a delivery pump (25) on the left bottom end, and the right side of the inner tube (24) is fixedly connected with a connecting pipe (3).

5. A mechanism for auxiliary purification of sulfuric acid in the production of sulfuric acid according to claim 4, characterized in that, The connecting pipe (3) is fixedly connected with a machine cover (31) on the left top end, and the machine cover (31) is fixedly connected with the top end of the cover plate (11). The machine cover (31) is fixedly connected with a water outlet pipe (34) on the top end. The machine cover (31) is rotatably connected with an impeller (32) on the inside. The bottom end of the impeller (32) is fixedly connected with a transmission rod (33), and the bottom end of the transmission rod (33) is fixedly connected with a mixing frame (35) opposite to each other on the outside. The bottom end of the transmission rod (33) is rotatably connected with the inside bottom end of the reaction kettle (1).

6. A mechanism for auxiliary purification of sulfuric acid in the production of sulfuric acid according to claim 5, characterized in that, The bottom right side of the reaction kettle (1) is fixedly connected with a discharge pipe (14).

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