Sulfuric acid storage device

Abstract

The utility model relates to the field of sulfuric acid storage, and discloses a sulfuric acid storage device which comprises a liquid storage container, a liquid inlet pipe, a liquid discharge pipe, a rotary driving part and a stirring assembly, the liquid storage container is provided with a cavity, a sinking groove is formed in the bottom face of the cavity, and the liquid inlet pipe is arranged on the liquid storage container and communicates with the cavity; the liquid discharging pipe is fixedly arranged on the liquid storage container, the liquid discharging pipe is provided with a liquid inlet, the liquid inlet is located in the sinking groove, the rotating driving part is fixedly installed on the liquid storage container, and the stirring assembly is located in the cavity and is in transmission connection with the rotating end of the rotating driving part. The stirring assembly is driven by the rotary driving part to continuously stir sulfuric acid in the cavity, so that the liquid layering phenomenon is effectively eliminated; the matching design of the settling tank and the liquid discharge pipe ensures concentrated discharge of sediments and prevents accumulation of the sediments at the bottom; forced convection formed by the stirring assembly can balance temperature distribution in the cavity, and the local corrosion risk is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the field of sulfuric acid storage, in particular to a sulfuric acid storage device. BACKGROUND

[0002] In the field of chemical production, the safe storage of high-concentration corrosive liquid is a long-standing technical problem. In the traditional static storage, when high-viscosity corrosive medium is handled, due to the lack of effective fluid circulation mechanism, the material stratification and sediment aggregation phenomenon is easy to occur in the tank body. This static storage state causes the formation of a temperature gradient in the medium, and the heat accumulation in the local area not only accelerates the material corrosion rate, but also may cause safety hazards. Especially in the storage process of strong corrosive medium such as sulfuric acid, the existing tank structure cannot realize uniform temperature field distribution, and the difference between the bottom sediment and the upper layer liquid physical properties gradually increases, which directly affects the storage quality stability. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the purpose of the application is to overcome the deficiencies in the prior art, and provide a sulfuric acid storage device.

[0004] To achieve the above purpose, the technical scheme adopted by the application is as follows:

[0005] The application provides:

[0006] A sulfuric acid storage device, comprising:

[0007] A liquid storage container, the liquid storage container has a cavity, and the cavity bottom surface is provided with a sediment groove;

[0008] A liquid inlet pipe, the liquid inlet pipe is arranged on the liquid storage container, and the liquid inlet pipe is in communication with the cavity;

[0009] A liquid outlet pipe, the liquid outlet pipe is fixedly arranged on the liquid storage container, the liquid outlet pipe has a liquid inlet port, and the liquid inlet port is located in the sediment groove;

[0010] A rotary driving member, the rotary driving member is fixedly installed on the liquid storage container;

[0011] A stirring assembly, the stirring assembly is located in the cavity, and the stirring assembly is in transmission connection with the rotary end of the rotary driving member;

[0012] The liquid height in the cavity (110) is H1, the liquid outlet pipe (300) has a liquid outlet port, a suction device is installed at the liquid outlet port, a check valve is arranged on the pipeline between the liquid outlet port and the suction device, the height of the liquid outlet port is H2, and H2> H1 is met.

[0013] Further, at least one baffle is fixedly arranged on the inner wall circumferential surface of the cavity.

[0014] Further, the liquid storage container is further provided with an exhaust pipe, which is in communication with the cavity, and a neutralization and adsorption tower is connected to the end of the exhaust pipe away from the liquid storage container.

[0015] Further, the liquid inlet pipe and the exhaust pipe are arranged on the upper surface of the liquid storage container, and the liquid outlet pipe has a liquid outlet opening located in the circumferential direction of the liquid storage container.

[0016] Further, the rotating end of the rotating driving member is connected with a speed reducer, and the output shaft of the speed reducer is in transmission connection with the stirring assembly.

[0017] Further, the stirring assembly comprises a stirring shaft, and a stirring member is fixedly arranged on the stirring shaft.

[0018] Further, the stirring member is a stirring rod or a helical blade.

[0019] Further, the stirring member comprises a sleeve, the sleeve has a sleeve hole, the sleeve hole is sleeved on the stirring shaft, at least one rod body is fixedly arranged on the sleeve circumferential surface, a fastening hole is formed in the sleeve circumferential surface, and a fixing member is arranged in the fastening hole.

[0020] Further, the number of the stirring members is N, and N satisfies N≥1.

[0021] The rotating driving member drives the stirring assembly to continuously stir the sulfuric acid in the cavity, so as to effectively eliminate the liquid layering phenomenon; the cooperation of the sedimentation tank and the liquid outlet pipe ensures that the precipitates are concentrated and discharged, and prevents the accumulation of bottom sediments; and the forced convection formed by the stirring assembly can balance the temperature distribution in the cavity and reduce the risk of local corrosion.

[0022] In order to make the above objectives, characteristics and advantages of the present application more apparent and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0024] Figure 1 The overall structure of the storage device of the present application is shown in the schematic diagram;

[0025] Figure 2 The structure of the stirring assembly of the present application is shown in the schematic diagram;

[0026] Figure 3 Fig. 1 shows a structural schematic diagram of the stirring assembly in a stirring rod state according to the present application;

[0027] Figure 4 Fig. 2 shows a structural schematic diagram of the stirring assembly in a spiral blade state according to the present application.

[0028] Main element symbol explanation:

[0029] 100 - liquid storage container; 110 - cavity; 120 - sink; 200 - liquid inlet pipe; 300 - liquid outlet pipe; 400 - rotary driving member; 500 - stirring assembly; 510 - stirring shaft; 520 - stirring member; 521 - sleeve; 5211 - sleeve hole; 522 - rod body; 523 - fastening hole; 600 - baffle; 700 - speed reducer; 800 - exhaust pipe. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and should not be understood as limiting the present application.

[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, the terms “first” and “second” are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with “first” and “second” can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of “plurality” is two or more, unless otherwise specifically limited.

[0033] In this application, unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicate that the first feature is lower than the second feature in horizontal height.

[0035] The existing sulfuric acid storage tank generally adopts static storage. Because of the lack of flow of sulfuric acid liquid, stratification and sedimentation aggregation phenomenon are prone to occur in the tank body. Therefore, the rotating driving part 400 drives the stirring assembly 500 in the cavity 110 to rotate, so as to realize stirring of the sulfuric acid liquid and prevent stratification and sedimentation of the sulfuric acid liquid.

[0036] The embodiment of the application provides a sulfuric acid storage device, which comprises a liquid storage container 100, a liquid inlet pipe 200, a liquid outlet pipe 300, a rotating driving part 400 and a stirring assembly 500. The liquid storage container 100 has a cavity 110, the bottom surface of the cavity 110 is provided with a sediment groove 120, the liquid inlet pipe 200 is arranged on the liquid storage container 100, the liquid inlet pipe 200 communicates with the cavity 110, the liquid outlet pipe 300 is fixedly arranged on the liquid storage container 100, the liquid outlet pipe 300 has a liquid inlet, the liquid inlet is located in the sediment groove 120, the rotating driving part 400 is fixedly installed on the liquid storage container 100, the stirring assembly 500 is located in the cavity 110, and the stirring assembly 500 is in transmission connection with the rotating end of the rotating driving part 400.

[0037] Reference Figure 1As shown, in the embodiment, the liquid in the cavity 110 is filled with sulfuric acid by connecting the external pipeline with the liquid inlet pipe 200, and the liquid is described below. Then, the stirring assembly 500 in the cavity 110 should be driven to rotate by the rotary drive 400 during filling, so as to stir the liquid in the cavity 110, prevent the liquid from stratifying or precipitating, and continue to rotate the stirring assembly 500 by the rotary drive 400 after filling, so as to prevent the liquid from stratifying and precipitating. Compared with the existing static storage method, the liquid can be stirred to prevent stratification and precipitation during filling and storage, and the uniformity of the mixture is ensured.

[0038] It should be noted that since sulfuric acid is strongly corrosive, the material of the liquid storage container 100 can be selected from some sulfuric acid corrosion-resistant materials, for example, the inner wall of the cavity 110 can be lined with high-density polyethylene or glass steel, etc., so as to enhance its corrosion resistance and improve its service life.

[0039] Please continue to refer to Figure 1 As shown, when the liquid in the cavity 110 is extracted for use, in order to extract the liquid in the cavity 110 to the maximum extent, a sink 120 is arranged at the edge of the inner bottom wall of the cavity 110. It can be understood that the inner bottom surface of the sink 120 should be lower than the inner bottom surface of the cavity 110, so as to ensure that the liquid in the cavity 110 will flow to the sink 120 first. Further, the liquid inlet of the liquid discharge pipe 300 is located in the sink 120, and the liquid in the cavity 110 and the sink 120 is extracted by the liquid discharge pipe 300. When the liquid in the cavity 110 is extracted, the liquid in the cavity 110 will flow to the sink 120 continuously until the liquid in the cavity 110 is extracted completely and only part of the liquid is left in the sink 120, thereby reducing the residual amount of the liquid in the liquid storage container 100. When the sediment appears at the bottom of the cavity 110, the sediment will flow to the sink 120, and the sediment at the bottom can be extracted by the liquid discharge pipe 300, preventing it from affecting the quality of the sulfuric acid liquid.

[0040] For example, the rotary drive 400 can select a motor, a motor, etc. In the embodiment, the rotary drive 400 selects a motor.

[0041] The inner wall of the cavity 110 is fixedly provided with at least one baffle 600.

[0042] Please continue to refer to Figure 1As shown, when the stirring assembly 500 is located in the cavity 110, when the rotating driving part 400 drives the stirring assembly 500 to rotate to stir the liquid in the cavity 110, it is easy to make the liquid produce vortex. In order to improve the uniformity of the liquid in the cavity 110, at least one baffle 600 is fixedly installed on the circumferential surface of the inner wall of the cavity 110. The rotating liquid is blocked by the baffle 600, so that the liquid realizes radial movement in the cavity 110 by a certain distance, so that the liquid is fully mixed, and the uniformity of the liquid is ensured.

[0043] For example, the number of baffles 600 can be two, three, four, etc. When the number of baffles 600 is greater than or equal to two, the baffles 600 are uniformly spaced about the circumferential surface of the inner wall of the cavity 110.

[0044] It should be noted that, in order to prevent the baffle 600 from being corroded by sulfuric acid, a corrosion-resistant material can be attached to the surface of the baffle 600 or made of a corrosion-resistant material.

[0045] It can be understood that the shape of the liquid storage container 100 can be cylindrical, cuboid, square, etc. In the embodiment, the shape of the liquid storage container 100 is cylindrical, and the cavity 110 is also cylindrical.

[0046] The liquid storage container 100 is also provided with an exhaust pipe 800, which communicates with the inside of the cavity 110. The port of the exhaust pipe (800) away from the liquid storage container (100) is connected with a neutralization adsorption tower.

[0047] Referring to Figure 1 As shown, in this example, sulfuric acid is easy to produce acidic gas during storage. If these gases are discharged to the external environment, it is easy to cause environmental pollution. Therefore, an exhaust pipe 800 communicating with the cavity 110 is needed to discharge the acidic gas existing in the cavity 110. In order to prevent the discharged acidic gas from polluting the environment, the port of the exhaust pipe 800 away from the liquid storage container 100 is also connected with a neutralization adsorption tower, which neutralizes and adsorbs the acidic gas from the exhaust pipe 800 by alkaline substances in the adsorption tower, so as to convert it into harmless gas.

[0048] In the embodiment, the liquid inlet pipe 200 and the exhaust pipe 800 are arranged on the upper surface of the liquid storage container 100. The liquid outlet pipe 300 has a liquid outlet port, and the liquid outlet port is located in the circumferential direction of the liquid storage container 100.

[0049] It can be understood that, in order to prevent the liquid level in the cavity 110 from being too high to overflow from the positions of the liquid inlet pipe 200 and the exhaust pipe 800, the liquid inlet pipe 200 and the exhaust pipe 800 are arranged at the highest position, i.e. the upper surface of the liquid storage container 100, so as to prevent the liquid from overflowing from the two pipes.

[0050] The liquid height in the cavity 110 is H1, the liquid outlet of the liquid outlet pipe 300 is provided with a suction device, a check valve is arranged on the pipeline between the liquid outlet and the suction device, and the height of the liquid outlet is H2, which satisfies H2>H1.

[0051] Please continue to refer to Figure 1 As shown, in order to prevent the liquid in the cavity 110 from being discharged from the liquid outlet of the liquid outlet pipe 300 when the liquid is not extracted, the height of the liquid outlet of the liquid outlet pipe 300 is greater than the liquid level in the cavity 110, i.e. H2 should be greater than H1 in the above-mentioned condition, so that the liquid in the cavity 110 will not be discharged from the liquid outlet of the liquid outlet pipe 300. If the liquid storage container shakes or the seal between the liquid outlet pipe 300 and the liquid storage container 100 fails, the liquid will not be discharged from the liquid outlet pipe 300, improving safety. In this embodiment, the liquid outlet pipe 300 is fixedly arranged on the side wall of the liquid storage container 100, and part of the liquid outlet pipe 300 is located in the cavity 110 and part of the liquid outlet pipe 300 is located outside the liquid storage container 100. It can be understood that the liquid inlet of the liquid outlet pipe 300 is located in the liquid storage container 100, and the liquid outlet of the liquid outlet pipe 300 is located outside the liquid storage container 100.

[0052] Further, the liquid in the cavity 110 can be extracted by the suction device (not shown in the figure) at the position of the liquid outlet. Since the liquid outlet is located at a high position, in order to prevent the liquid in the liquid outlet pipe 300 from flowing back to the cavity 110 due to gravity, a corresponding check valve can be arranged in the pipeline between the liquid outlet pipe 300 and the suction device, so as to prevent the liquid in the subsequent pipeline from being siphoned back. It can be understood that the check valve functions as a one-way valve, i.e. it is open in the direction from the liquid outlet to the suction device, and it is closed in the opposite direction.

[0053] In some embodiments, the suction device can be a pump body or other device capable of extracting liquid from the cavity 110, and the specific type is not limited here. Further, the liquid outlet can be extended to the bottom, and then the suction device can be arranged at one side of the bottom of the liquid storage container 100, facilitating installation of the suction device.

[0054] The rotating end of the rotating drive 400 is connected with a speed reducer 700, and the output shaft of the speed reducer 700 is in transmission connection with the stirring assembly 500.

[0055] The rotating driving member 400 is selected as a motor, and the motor generally has the characteristics of high rotating speed and low torque. However, the liquid in the cavity 110 needs to be stirred by the rotating stirring assembly 500 driven by the rotating driving member 400, and thus a large torque is required. Therefore, if the stirring assembly 500 is directly selected as the rotating driving member 400 for direct driving, the rotating driving member 400 is difficult to directly drive the stirring assembly 500 to rotate. Therefore, a speed reducer 700 is installed at the rotating shaft of the rotating driving member 400, and the speed reducer 700 converts the high rotating speed and low torque of the rotating driving member 400 into low rotating speed and high torque, so that the stirring assembly 500 can be driven to rotate by sufficient torque to stir the liquid in the cavity 110.

[0056] For example, the speed reducer 700 can be a planetary reducer, a worm reducer, a spur gear reducer, a helical gear reducer, or the like. In practice, the type of speed reducer can be selected according to the size of the installation space, the load, and the like. The specific type of speed reducer is not limited here.

[0057] The stirring assembly 500 includes a stirring shaft 510, and a stirring member 520 is fixedly arranged on the stirring shaft 510.

[0058] As shown in Figure 1 and Figure 2 , the stirring shaft 510 is connected with the speed reducer 700 to realize power transmission, so that the power from the rotating driving member 400 can be transmitted to the stirring member 520 to drive the stirring member 520 to rotate and stir the liquid in the cavity 110, thereby preventing the liquid from stratifying and precipitating.

[0059] In one embodiment, the stirring member 520 is a stirring rod. In this embodiment, the number of stirring members 520 is N, and N satisfies N≥1. In order to improve the stirring efficiency, the number of stirring members 520 can be increased, for example, the number of stirring members 520 can be two, three, four, five, or the like. When there are multiple stirring members 520, the stirring members 520 are uniformly and intermittently arranged on the stirring shaft 510.

[0060] The stirring member 520 includes a sleeve 521, the sleeve 521 has a sleeve hole 5211, the sleeve hole 5211 is sleeved on the stirring shaft 510, at least one rod body 522 is fixedly arranged on the peripheral surface of the sleeve 521, a fastening hole 523 is formed in the peripheral surface of the sleeve 521, and a fixing member is arranged in the fastening hole 523.

[0061] As shown in Figure 2 and Figure 3As shown, in order to realize the installation of the stirring piece 520 and the stirring shaft 510, the stirring piece 520 comprises a sleeve 521 with a sleeve hole 5211, and a fastening hole 523 is formed on the circumferential surface of the sleeve 521, then a fixing member can be screwed into the sleeve 521 and abut against the stirring shaft 510, so as to realize the position fixing of the sleeve 521, specifically, the fastening hole 523 can be a threaded hole, and the fixing member can be a bolt, by the cooperation of the bolt and the threaded hole, as the bolt continues to be screwed in the direction of the stirring shaft 510, the end of the bolt will abut against the stirring shaft 510, so as to realize the fixing of the sleeve 521 and the stirring shaft 510, next, the outer circumferential surface of the sleeve 521 can be installed with a rod body 522 to realize the stirring of the liquid.

[0062] In order to improve the stirring efficiency of the liquid in the cavity 110, a plurality of rod bodies 522 can be installed on the sleeve 521, and the number of the rod bodies 522 can be one, two, three, four, etc., which can be selected according to the needs, and is not limited here.

[0063] Referring to Figure 4 As shown, in another embodiment, the stirring piece 520 is a spiral blade, which is driven to rotate by the stirring shaft 510, and it can be understood that, as the stirring piece 520 rotates and the rotating direction is different, the liquid in the cavity 110 will have a tendency to flow upward or downward, so as to realize the axial stirring of the liquid in the cavity 110.

[0064] In order to prevent the corrosion of the stirring shaft 510, the sleeve 521, the rod body 522 and the fastening member, the material used for manufacturing them should be a corrosion-resistant material, for example, plastic material, etc.

[0065] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0066] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A sulfuric acid storage device, characterized by, The utility model relates to a liquid storage container, and relates to the technical field of liquid storage containers. The utility model discloses a liquid storage container, which comprises a liquid storage container (100) with a cavity (110) provided with a sink (120) on the bottom surface, a liquid inlet pipe (200) arranged on the liquid storage container (100) and communicating with the cavity (110), a liquid outlet pipe (300) fixedly arranged on the liquid storage container (100) and having a liquid inlet opening located in the sink (120), a rotary driving member (400) fixedly installed on the liquid storage container (100), a stirring assembly (500) located in the cavity (110) and in transmission connection with the rotary end of the rotary driving member (400), wherein the liquid height in the cavity (110) is H1, the liquid outlet pipe (300) has a liquid outlet opening, a suction device is installed at the liquid outlet opening, a check valve is arranged on the pipeline between the liquid outlet opening and the suction device, the height of the liquid outlet opening is H2, and H2 > H1 is satisfied. The liquid storage container (100) is further provided with an exhaust pipe (800) in communication with the inside of the cavity (110), and the exhaust pipe (800) is connected to a neutralization adsorption tower at the end away from the liquid storage container (100). At least one baffle (600) is fixedly arranged on the inner wall circumferential surface of the cavity (110). The liquid inlet pipe (200) and the exhaust pipe (800) are arranged on the upper surface of the liquid storage container (100), the liquid outlet pipe (300) has a liquid outlet opening, and the liquid outlet opening is located in the circumferential direction of the liquid storage container (100). The rotary end of the rotary driving member (400) is connected to a speed reducer (700), and the output shaft of the speed reducer (700) is in transmission connection with the stirring assembly (500). The stirring assembly (500) comprises a stirring shaft (510) and a stirring member (520) fixedly arranged on the stirring shaft (510). The stirring member (520) is a stirring rod or a helical blade.

2. The sulfuric acid storage device of claim 1, wherein The stirring member (520) comprises a sleeve (521) with a sleeve hole (5211) sleeved on the stirring shaft (510), at least one rod body (522) fixedly arranged on the circumferential surface of the sleeve (521), and a fastening hole (523) formed in the circumferential surface of the sleeve (521) and provided with a fixing member.

3. The sulfuric acid storage device of claim 1, wherein, The number of the stirring members (520) is N, and N >= 1 is satisfied.

4. The sulfuric acid storage device of claim 1, wherein, ​ 5. The sulfuric acid storage device of claim 1, wherein, ​ 6. The sulfuric acid storage device of claim 5, wherein, ​ 7. The sulfuric acid storage device of claim 5, wherein, ​ 8. The sulfuric acid storage device according to claim 5 or 7, characterized in that ​

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