Acid mixing device

Abstract

The utility model relates to an acid mixing device and belongs to the technical field of acid mixing devices. Comprising an acid mixing barrel, a barrel cover, a concentrated sulfuric acid ingress pipe, a waste acid ingress pipe and a mixed acid output pipe, a barrel cover covers the top of the acid mixing barrel, and a concentrated sulfuric acid introduction pipe and a waste acid introduction pipe are arranged on the barrel cover; the lower end of the concentrated sulfuric acid ingress pipe extends downwards to the middle of the acid mixing barrel, and the waste acid ingress pipe extends downwards to the bottom of the acid mixing barrel; a mixed acid output pipe is arranged at the bottom of the acid mixing barrel, and the upper end of the mixed acid output pipe extends upwards into the acid mixing barrel. The upper end of the mixed acid output pipe is inserted into the acid mixing barrel, so that acid liquor with higher liquid level is contained in the acid mixing barrel, then concentrated sulfuric acid is guided into the bottom of the acid mixing barrel, and due to the fact that the guided concentrated sulfuric acid is located at a lower position and is far away from the liquid level, boiling and splashing generated when the concentrated sulfuric acid is diluted can be effectively suppressed; and the boiling acid liquor is turned upwards so as to be fully mixed with the waste acid in the middle, so that the mixing uniformity of the concentrated sulfuric acid and the waste acid is effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of acid mixing devices, and in particular to an acid mixing device. Background Technology

[0002] The waste acid treatment process employs a sulfidation-gypsum-neutralization iron salt process. In this process, the waste acid is discharged from other areas through pipelines to a waste acid stock tank. The waste acid is then pumped from the waste acid stock tank into a hydrogen sulfide reaction tank for reaction. During this process, if the waste acid has a high arsenic content and low acidity, it needs to be mixed with acid.

[0003] During acid preparation, concentrated sulfuric acid is added to a waste acid stock solution tank, which is 7.9 meters deep and 8 meters in diameter. During this process, the concentrated sulfuric acid is diluted, releasing a large amount of heat, which can cause overheating and splashing. The splashed acid not only contaminates surrounding equipment but also poses a safety hazard. Utility Model Content

[0004] To solve or partially solve the problems existing in related technologies, this utility model provides an acid mixing device, which aims to slow down the dilution process of concentrated sulfuric acid and reduce acid splashing.

[0005] The aforementioned acid mixing device includes an acid mixing tank, a tank lid, a concentrated sulfuric acid inlet pipe, a waste acid inlet pipe, and a mixed acid outlet pipe;

[0006] The top of the mixed acid tank is covered with a lid, and the lid is equipped with a concentrated sulfuric acid inlet pipe and a waste acid inlet pipe; the lower end of the concentrated sulfuric acid inlet pipe extends downward to the middle of the mixed acid tank, and the waste acid inlet pipe extends downward to the bottom of the mixed acid tank.

[0007] The bottom of the mixed acid tank is provided with a mixed acid output pipe, the upper end of which extends upward into the mixed acid tank, and the upper end of the mixed acid output pipe is higher than the lower end of the waste acid inlet pipe.

[0008] In some designs, the lid is also equipped with a vent pipe.

[0009] In some designs, the bottom of the mixed acid tank is conical.

[0010] In some designs, a connecting seat is provided on the outer side of the mixed acid tank.

[0011] In some designs, a limiting tube is provided on the lower side of the bucket lid, and the outer diameter of the limiting tube matches the inner diameter of the mixed acid bucket.

[0012] The technical solution provided by this utility model can include the following beneficial effects:

[0013] This application inserts the upper end of the mixed acid output pipe into the mixed acid tank, so that the mixed acid tank has a high liquid level of acid. Then, concentrated sulfuric acid is introduced into the bottom of the mixed acid tank. Because the concentrated sulfuric acid is introduced at a low position and far from the liquid surface, the boiling and splashing generated when the concentrated sulfuric acid is diluted can be effectively suppressed. At the same time, the boiling acid will rise and mix thoroughly with the dirty acid in the middle, effectively improving the mixing uniformity of concentrated sulfuric acid and dirty acid.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0015] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0016] Figure 1 This is a schematic diagram of the mixed acid device shown in an embodiment of the present invention.

[0017] Figure label:

[0018] 1. Mixed acid tank; 2. Tank lid; 3. Concentrated sulfuric acid inlet pipe; 4. Waste acid inlet pipe; 5. Mixed acid outlet pipe; 6. Vent pipe; 7. Connecting seat; 8. Limiting pipe. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited to the content described.

[0020] like Figure 1 As shown, this application provides a mixed acid device, including a mixed acid tank 1, a tank cover 2, a concentrated sulfuric acid inlet pipe 3, a waste acid inlet pipe 4, and a mixed acid outlet pipe 5; the mixed acid tank 1 is generally hollow cylindrical in shape, the main body is made of steel structure, and the inner wall is coated with a layer of polytetrafluoroethylene.

[0021] The top of the mixed acid tank 1 is covered with a lid 2. The lid 2 is equipped with a concentrated sulfuric acid inlet pipe 3 and a waste acid inlet pipe 4. The upper ends of the concentrated sulfuric acid inlet pipe 3 and the waste acid inlet pipe 4 are respectively provided with flanges to facilitate connection with the waste acid pipe and the concentrated sulfuric acid pipe. The diameter of the concentrated sulfuric acid inlet pipe 3 is smaller than the diameter of the waste acid inlet pipe 4. The lower end of the concentrated sulfuric acid inlet pipe 3 extends downward to the middle of the mixed acid tank 1, and the waste acid inlet pipe 4 extends downward to the bottom of the mixed acid tank 1. The bottom of the mixed acid tank 1 is provided with a mixed acid outlet pipe 5. The lower end of the mixed acid outlet pipe 5 is provided with a flange to facilitate connection with a pipeline. The upper end of the mixed acid outlet pipe 5 extends upward into the mixed acid tank 1, and the upper end of the mixed acid outlet pipe 5 is higher than the lower end of the waste acid inlet pipe 4.

[0022] In use, connect the concentrated sulfuric acid inlet pipe 3 to the concentrated sulfuric acid pipe, connect the waste acid inlet pipe 4 to the waste acid pipe, and connect the mixed acid outlet pipe 5 to the waste acid stock tank through the pipeline.

[0023] During acid preparation, concentrated sulfuric acid in the concentrated sulfuric acid pipe is introduced into the bottom of the mixed acid tank 1 through concentrated sulfuric acid inlet pipe 3, and waste acid in the waste acid pipe is introduced into the middle of the mixed acid tank 1 through waste acid inlet pipe 4. Concentrated sulfuric acid and waste acid are mixed in the mixed acid tank 1, and concentrated sulfuric acid is diluted. The mixed acid after mixing is output through mixed acid outlet pipe 5 and finally introduced into the waste acid stock tank.

[0024] This application inserts the upper end of the mixed acid output pipe 5 into the mixed acid tank 1, so that the mixed acid tank 1 has a high liquid level of acid. Then, concentrated sulfuric acid is introduced into the bottom of the mixed acid tank 1. Since the concentrated sulfuric acid is introduced at a low position and far from the liquid surface, the boiling and splashing generated when the concentrated sulfuric acid is diluted can be effectively suppressed. At the same time, the boiling acid will rise and mix thoroughly with the dirty acid in the middle, effectively improving the mixing uniformity of concentrated sulfuric acid and dirty acid.

[0025] In some specific embodiments, the lid 2 is also provided with a vent pipe 6, which is located in the middle of the lid 2 and is used to connect the internal cavity of the mixed acid tank 1 with the outside atmosphere, so that the introduction and export of acid liquid in the mixed acid tank 1 is smoother.

[0026] In some specific embodiments, the bottom of the acid mixing tank 1 is conical. When concentrated sulfuric acid impacts the bottom of the acid mixing tank 1, it flows downward to the central area of ​​the acid mixing tank 1, thereby causing the acid in this part to churn and further improving the acid mixing effect.

[0027] In some specific embodiments, a connecting seat 7 is provided on the outer side of the acid mixing tank 1. The connecting seats 7 are evenly spaced around the circumference of the acid mixing tank 1 and are used to install the acid mixing tank 1, which helps to improve the ease of installation of the acid mixing tank 1.

[0028] In some specific embodiments, the lower side of the bucket lid 2 is provided with a limiting tube 8, the outer diameter of the limiting tube 8 is matched with the inner diameter of the mixed acid bucket 1. When installing the bucket lid 2, it is only necessary to ensure that the limiting tube 8 is inserted into the mixed acid bucket 1 to realize the assembly of the mixed acid bucket 1 and the bucket lid 2. The bucket lid 2 is easy to install.

[0029] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or improvements to the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A mixed acid apparatus, characterized in that: Includes a mixed acid tank (1), a tank lid (2), a concentrated sulfuric acid inlet pipe (3), a waste acid inlet pipe (4), and a mixed acid outlet pipe (5); The top of the mixed acid tank (1) is covered with a lid (2), and the lid (2) is provided with a concentrated sulfuric acid inlet pipe (3) and a waste acid inlet pipe (4); the lower end of the concentrated sulfuric acid inlet pipe (3) extends downward to the middle of the mixed acid tank (1), and the waste acid inlet pipe (4) extends downward to the bottom of the mixed acid tank (1). The bottom of the mixed acid tank (1) is provided with a mixed acid output pipe (5). The upper end of the mixed acid output pipe (5) extends upward into the mixed acid tank (1), and the upper end of the mixed acid output pipe (5) is higher than the lower end of the waste acid inlet pipe (4).

2. The mixed acid apparatus according to claim 1, characterized in that: The lid (2) is also equipped with a vent pipe (6).

3. The mixed acid apparatus according to claim 1, characterized in that: The bottom of the mixed acid tank (1) is conical.

4. The mixed acid apparatus according to claim 1, characterized in that: The outer side of the mixed acid tank (1) is provided with a connecting seat (7).

5. The mixed acid apparatus according to claim 1, characterized in that: The lower side of the bucket lid (2) is provided with a limiting tube (8), and the outer diameter of the limiting tube (8) matches the inner diameter of the mixed acid bucket (1).

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