Hydrochloric acid storage tank comprising a corrosion-proof lining structure

Abstract

The utility model relates to a hydrochloric acid storage tank technical field provides a kind of hydrochloric acid storage tank containing anticorrosive lining structure, the hydrochloric acid storage tank is spherical, it includes the tank body outside and is located in the lining of tank body, lining includes spherical cavity and columnar ball neck, ball neck top end is used to be connected with arched dome, the bottom end of ball neck is used to be sealed with tank body Connection;Arched dome is equipped with acid removal component in the middle, tank body is welded with annular support outside, multiple struts are connected with annular support;Lining contains glass steel, gum layer and double anticorrosive paint, glass steel in ball neck is used to be connected with arched dome.The utility model improves workshop working environment safety by optimizing the structure of hydrochloric acid storage tank, volatile acid mist is handled, and the corrosion resistance of storage tank is improved simultaneously.

Description

Technical Field

[0001] This application relates to the field of hydrochloric acid storage tank technology, and specifically to a hydrochloric acid storage tank including a corrosion-resistant lining structure. Background Technology

[0002] Hydrochloric acid is a strong acid commonly used in existing chemical or related industrial fields. It is highly corrosive, so corrosion-resistant linings or inner linings are often installed in the tanks during storage. In the existing tank structure, the volatile acid mist is generally discharged directly from the tank, which affects the safety of the workshop working environment. Summary of the Invention

[0003] This invention provides a hydrochloric acid storage tank with a corrosion-resistant lining structure to solve the problem that existing storage tanks cannot handle the volatilized acid mist that is directly discharged into the workshop, thereby affecting the safety of the workshop working environment.

[0004] This utility model discloses a hydrochloric acid storage tank with an anti-corrosion lining structure. The hydrochloric acid storage tank is spherical and includes an outer tank body and a lining disposed inside the tank body. The lining includes a spherical receiving cavity and a columnar spherical neck. The top end of the spherical neck is used to connect with an arched dome, and the bottom end of the spherical neck is used to seal the connection with the tank body. An acid removal component is provided in the middle of the arched dome. An annular support is welded to the outside of the tank body, and multiple pillars are connected to the annular support. The lining includes fiberglass, an adhesive layer, and a double layer of anti-corrosion paint. The fiberglass located at the spherical neck is used to connect with the arched dome.

[0005] In this invention, a spherical hydrochloric acid storage tank is mounted on an arched dome connected to a lining. The arched dome absorbs the volatile hydrochloric acid, preventing direct leakage into the workspace and ensuring the safety of personnel and equipment. Furthermore, the lining structure, comprising fiberglass, a rubber layer, and double-layered anti-corrosion paint, enhances the corrosion resistance of the hydrochloric acid storage tank.

[0006] Optionally, a cavity is formed between the inner wall of the tank and the lining, and the cavity is connected to an external pressure regulating device.

[0007] In this design, a cavity is provided between the inner wall and the lining of the tank to adjust the pressure in the tank so as to keep the pressure in the storage tank stable.

[0008] Optionally, the acid removal component includes: a tempered glass outer shell, wherein a primary filter layer, a reaction layer, and a secondary filter layer are independently disposed within the outer shell.

[0009] In this design, a pair of tempered glass and outer shell is set up to remove volatile acid mist, which is removed by passing through a primary filter layer, a reaction layer and a secondary filter layer in sequence.

[0010] The aforementioned primary filtration layer contains a particulate acid removal medium, the reaction layer contains two independent acid removal pads, the acid removal pads adsorb alkaline liquid, and the secondary filtration layer includes filter cloth and alkaline powder disposed between the two filter cloths.

[0011] In this design, granular acid removal medium is used to initially absorb acid mist. Then, the acid mist that has passed through the primary filter layer is removed by neutralization reaction using alkaline liquid in the acid removal pad. Finally, dry alkaline powder is used to completely remove the acid mist that has passed through the reaction layer, thereby improving the acid mist removal quality of this hydrochloric acid storage tank.

[0012] The re-filtration layer also includes nested fixing rings, with the double-layered filter cloth sandwiched between the inner fixing ring and the outer fixing ring.

[0013] This structure increases the contact surface area between the alkaline powder and the acid mist, and facilitates the filling of alkaline powder or the replacement of new alkaline powder.

[0014] Optionally, the outer wall of the tank is coated with an anti-corrosion coating.

[0015] In this design, the anti-corrosion coating on the outer wall of the tank is used to protect the outer surface of the tank from environmental factors and to protect the stability of the tank structure.

[0016] Optionally, it also includes a drain port, a drain port, and a level gauge. The drain port is located at the spherical neck, the drain port is located at the bottom of the tank, and the level gauge is located outside the tank with its detection end extending into the spherical cavity.

[0017] In this design, the inlet is used to introduce hydrochloric acid into the spherical container cavity, the outlet at the bottom of the tank is used to discharge hydrochloric acid from the storage tank, and the level gauge is used to detect the amount of hydrochloric acid stored in the storage tank.

[0018] The beneficial effects of this utility model are as follows: This utility model provides a hydrochloric acid storage tank with an anti-corrosion lining structure. By optimizing the structure of the hydrochloric acid storage tank, it not only solves the problem that existing storage tanks cannot handle the volatile acid mist that is directly discharged into the workshop, thereby affecting the safety of the workshop working environment, but also improves the corrosion resistance of the storage tank. Attached Figure Description

[0019] Figure 1 This is a front structural diagram of a hydrochloric acid storage tank with an anti-corrosion lining structure provided in this application; Figure 2 This is a three-dimensional and partially cross-sectional schematic diagram of the lining in the embodiments of this application; Figure 3 This is a schematic cross-sectional view of the acid removal component in an embodiment of this application. Figure 4This is an exploded view of the fixed filter cloth structure in the re-filtration layer of this application.

[0020] In the picture: 1: Tank body; 11: Annular support; 12: Column; 2: Lining; 21: Spherical cavity; 22: Spherical neck; 23: Anti-corrosion paint; 3: Arched dome; 4: Outer shell; 41: Primary filter layer; 42: Reaction layer; 43: Secondary filter layer; 431: Fixed inner ring; 432: Fixed outer ring; 5: Drain port; 6: Inlet port. Detailed Implementation

[0021] The technical solutions in the embodiments of the application will now be clearly and completely described with reference to the accompanying drawings. Furthermore, the phrases "in one embodiment" or "in one embodiment" appearing throughout this specification do not necessarily refer to the same embodiment. Moreover, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0022] Hydrochloric acid is a commonly used strong acid in existing chemical and related industrial fields. Due to its high corrosiveness, corrosion-resistant linings are often installed inside storage tanks. In existing tank structures, volatile acid fumes are generally discharged directly from the tank, affecting the safety of the workshop working environment. Therefore, this invention provides a hydrochloric acid storage tank with a corrosion-resistant lining structure to solve the problem of volatile acid fumes treatment and improve the corrosion resistance of the storage tank.

[0023] Specifically, a hydrochloric acid storage tank with an anti-corrosion lining structure is provided. The hydrochloric acid storage tank is spherical and includes an outer tank body 1 and a lining 2 located inside the tank body 1. The lining 2 includes a spherical receiving cavity 21 and a columnar spherical neck 22. The top end of the spherical neck 22 is used to connect with an arched dome 3, and the bottom end of the spherical neck 22 is used to seal the connection with the tank body 1. An acid removal component is provided in the middle of the arched dome 3. An annular support 11 is welded to the outside of the tank body 1, and multiple pillars 12 are connected to the annular support 11. The lining 2 includes fiberglass, an adhesive layer, and a double layer of anti-corrosion paint 23. The fiberglass located in the spherical neck 22 is used to connect with the arched dome 3.

[0024] The acid removal component includes: a tempered glass outer shell 4, within which are independently arranged a primary filter layer 41, a reaction layer 42, and a secondary filter layer 43. The primary filter layer 41 contains granular acid removal media, the reaction layer 42 contains two independent acid removal pads, each containing alkaline liquid, and the secondary filter layer 43 includes filter cloth and alkaline powder disposed between the two filter cloth layers.

[0025] First, the hydrochloric acid storage tank in this invention is spherical. Under the same volume, the surface area of ​​hydrochloric acid in contact with air inside the spherical tank 1 is the smallest, which helps to reduce the volatilization of hydrochloric acid.

[0026] Reference Figure 1 As shown, the tank body 1 of the hydrochloric acid storage tank is welded from multiple arc-shaped or circular arc-shaped plates. A ring-shaped support 11 is installed at the equator of the tank body 1 to connect with the support column 12 and fix the entire tank body 1 at a certain height. In addition, a drain port 5 is provided at the bottom of the tank body 1 for draining the hydrochloric acid inside the tank; a level gauge is installed on the outer side of the tank body 1 in the vertical direction, and the detection end of the level gauge extends into the spherical receiving cavity 21 to monitor the amount of hydrochloric acid stored in the tank.

[0027] It should be noted that the spherical hydrochloric acid storage tank provided by this utility model is equipped with a multi-layered lining 2, including a fiberglass or carbon steel base layer, a gel layer on top of the base layer, which can be made of an existing corrosion-resistant polyester material; then, a 3-5mm layer of corrosion-resistant anti-corrosion paint 23 is applied to the gel layer, which can be an epoxy zinc-rich primer or a polyurethane topcoat. This composite lining 2 structure not only meets the structural strength requirements of the spherical tank but also increases the corrosion resistance of the lining 2.

[0028] It should also be noted that, as Figure 2 As shown, the aforementioned liner 2 includes a lower spherical receiving cavity 21 and a columnar spherical neck 22 located at the upper end of the receiving cavity. The top end of the spherical neck 22 is used to connect to an arched dome 3. The vertical section of the spherical neck 22 is provided with an inlet 6 for introducing hydrochloric acid into the receiving cavity 21. The bottom end of the spherical neck 22 of the liner 2 is fixedly connected to the tank body 1 to stabilize the position of the liner 2. An acid removal component is installed inside the arched dome 3 at the top of the spherical neck 22 to absorb the acid mist volatilized inside the liner 2, preventing the acid mist from being directly discharged from the spherical tank and affecting the safety of the working environment.

[0029] Reference Figure 3 As shown, the lining 2 in this embodiment includes a three-layer structure for filtering acid mist within a shell made of tempered glass. The first layer is a pre-filter layer 41, which uses a stainless steel or tempered glass mesh frame to hold granular acid removal media. When acid mist comes into contact with the acid removal media, a neutralization reaction (i.e., acid-base neutralization reaction) occurs, converting the acid mist into salt and water that are adsorbed onto the surface of the acid removal particles. The second layer is a reaction layer 42, where some acid mist that has passed through the granular acid removal media is further processed. The reaction layer 42 is a soft pad, i.e., the aforementioned acid removal pad, whose internal sponge contains adsorbed alkaline liquid. When fine acid mist particles come into contact with the sponge, they undergo a neutralization reaction with the alkaline liquid inside. The third layer is a re-filter layer 43, where any remaining acid mist that has passed through the sponge in the second layer is reabsorbed. This re-filter layer 43 contains powdered acid removal media, which not only removes residual acid mist but also absorbs mixed moisture, further improving the quality of acid removal by the device.

[0030] It should be noted that the aforementioned alkaline deacidification medium can be an alkaline salt or soda ash, such as carbon hydroxide, ammonia, etc. This embodiment does not impose specific limitations on this.

[0031] Reference Figure 4 The aforementioned re-filtration layer 43 also includes nested fixing rings, with the double-layered filter cloth sandwiched between the inner fixing ring 431 and the outer fixing ring 432. In this embodiment, two nested inner fixing rings 431 and outer fixing rings 432 are used to seal and fix the filter cloth containing alkaline powder. This fixing structure is simple and convenient for replacing the alkaline powder after a period of reaction. In use, the alkaline powder is first placed on a filter cloth, then another layer of filter cloth is placed on top, and the whole thing is placed in the middle of the outer fixing ring 432, with the edge of the filter cloth extending a certain length beyond the edge of the outer fixing ring 432. Then the inner fixing ring 431 is then... Figure 4 Move it downwards in the direction of the middle arrow to nest it in the fixed outer ring 432. After nesting, the filter cloth is sandwiched between the outer wall of the fixed inner ring 431 and the inner wall of the fixed outer ring 432.

[0032] In some embodiments, a cavity is formed between the inner wall of the tank body 1 and the outer wall of the liner 2 of the hydrochloric acid storage tank, and this cavity is connected to an external pressure regulating device for the spherical tank. In this embodiment, the cavity between the inner wall of the tank body 1 and the liner 2 is provided to adjust the pressure in the spherical tank so as to keep the pressure inside the storage tank stable. The pressure regulating device used is a nitrogen pump, which is used to inject nitrogen gas into the cavity to adjust the pressure inside the cavity.

[0033] In some embodiments, the outer wall of the hydrochloric acid storage tank 1 is coated with an anti-corrosion coating. In this embodiment, because the spherical tank stores hydrochloric acid, which is a strong acid medium, if an overflow occurs when liquid is taken out or discharged from the spherical tank, the strong acid will fall onto the tank body 1 and severely damage the outer surface of the tank body 1. Therefore, an anti-corrosion coating is provided on its surface to isolate the steel structure of the tank body 1 from the outside environment and prevent the steel structure of the tank body 1 from being corroded and damaged.

[0034] In summary, the hydrochloric acid storage tank with a corrosion-resistant lining structure provided by this utility model not only solves the problem that existing storage tanks cannot handle the volatile acid mist that is directly discharged into the workshop, thus affecting the safety of the workshop working environment, by optimizing the structure of the hydrochloric acid storage tank, but also improves the corrosion resistance of the storage tank.

[0035] The above embodiments merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A hydrochloric acid storage tank comprising a corrosion-resistant lining structure, characterized in that, The hydrochloric acid storage tank is spherical, comprising an outer tank body (1) and a lining (2) located inside the tank body (1). The lining (2) includes a spherical receiving cavity (21) and a columnar spherical neck (22). The top of the spherical neck (22) is used to connect with an arched dome (3), and the bottom of the spherical neck (22) is used to seal the connection with the tank body (1). An acid removal assembly is provided in the middle of the arched dome (3). An annular support (11) is welded to the outside of the tank body (1), and multiple support columns (12) are connected to the annular support (11). The lining (2) comprises fiberglass, a gel layer, and a double layer of anti-corrosion paint (23). The fiberglass located in the spherical neck (22) is used to connect with the arched dome (3).

2. The hydrochloric acid storage tank including an anti-corrosion lining structure according to claim 1, characterized in that, A cavity is formed between the inner wall of the tank (1) and the lining (2), and the cavity is connected to the external pressure regulating device of the tank (1).

3. The hydrochloric acid storage tank including an anti-corrosion lining structure according to claim 2, characterized in that, The acid removal component includes: a tempered glass outer shell (4), and the outer shell (4) is provided with a primary filter layer (41), a reaction layer (42) and a secondary filter layer (43) that are independently arranged.

4. The hydrochloric acid storage tank including an anti-corrosion lining structure according to claim 3, characterized in that, The primary filter layer (41) contains a particulate acid removal medium, the reaction layer (42) contains two independent acid removal pads, the acid removal pads adsorb alkaline liquid, and the secondary filter layer (43) includes filter cloth and alkaline powder disposed between the two filter cloths.

5. The hydrochloric acid storage tank including an anti-corrosion lining structure according to claim 4, characterized in that, The re-filter layer (43) also includes nested fixing rings, with the double-layered filter cloth sandwiched between the inner fixing ring (431) and the outer fixing ring (432).

6. The hydrochloric acid storage tank including an anti-corrosion lining structure according to claim 1, characterized in that, The outer wall of the tank (1) is coated with an anti-corrosion coating.

7. The hydrochloric acid storage tank comprising an anti-corrosion lining structure according to any one of claims 1 to 6, characterized in that, It also includes a drain port (5), a liquid inlet (6), and a level gauge. The liquid inlet (6) is located at the ball neck (22), the drain port (5) is located at the bottom of the tank (1), and the level gauge is located outside the tank (1) with its detection end extending into the spherical cavity (21).

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