Absorption tower for efficiently absorbing high-temperature mercuric chloride gas

Abstract

The utility model discloses an absorption tower for efficiently absorbing high-temperature mercuric chloride gas, which comprises a first absorption tower and a second absorption tower, the circumferential surface of the first absorption tower is fixedly connected with a gas inlet pipe and a first spray pipe, and the bottom of the first absorption tower is fixedly connected with a first liquid outlet pipe; a first partition plate is fixedly connected to the interior of the first absorption tower, a connecting pipe is fixedly connected to the circumferential surface of the first absorption tower, and the first absorption tower and the second absorption tower are communicated with each other through the connecting pipe. The high-temperature mercuric chloride gas is cooled and then absorbed, and the rest gas is sprayed, cooled and absorbed again through the second absorption tower, so that the content of mercuric chloride in the tail gas can be completely reduced to the emission standard, the absorption efficiency of the mercuric chloride gas is greatly improved, meanwhile, the equipment is simple in structure, and the removal cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of absorption towers, in particular to an absorption tower for efficiently absorbing high-temperature mercuric chloride gas. Background Art

[0002] Mercuric chloride is widely used in industry, mainly as a catalyst, bactericide, battery depolarizer, pharmaceutical preservative, etc. For example, in organic synthesis, mercuric chloride is an important catalyst, especially suitable for aromatic substitution reactions of chlorinated aromatics and brominated aromatics. In battery manufacturing, mercuric chloride is used as a positive electrode material and paired with zinc or aluminum as a negative electrode material to make disposable batteries. In addition, due to its strong oxidizing and bactericidal properties, mercuric chloride is also widely used in the manufacture of preservatives and bactericides. Because mercuric chloride has strong oxidizing and bactericidal properties, excess mercuric chloride needs to be removed during the production process. In the existing high-temperature mercuric chloride gas absorption tower, its absorption efficiency is not high, resulting in a complex equipment structure and high cost. Utility Model Content

[0003] The utility model aims to provide an absorption tower for efficiently absorbing high-temperature mercuric chloride gas. The high-temperature mercuric chloride gas is injected into a first absorption tower, and acid is sprayed evenly through a plurality of spray pipes to cool the high-temperature mercuric chloride gas and then absorbed. The remaining gas is sprayed again through a second absorption tower for cooling and absorption, and the mercuric chloride content in the tail gas can be completely reduced to the emission standard, which greatly improves the absorption efficiency of the mercuric chloride gas. At the same time, the equipment structure is simple, and the removal cost is greatly reduced.

[0004] To achieve the above-mentioned purpose, an absorption tower for efficiently absorbing high-temperature mercuric chloride gas is provided, including: a first absorption tower and a second absorption tower, wherein an air inlet pipe and a first spray pipe are fixedly connected to the circumferential surface of the first absorption tower, a first liquid outlet pipe is fixedly connected to the bottom of the first absorption tower, a first partition plate is fixedly connected to the interior of the first absorption tower, a connecting pipe is fixedly connected to the circumferential surface of the first absorption tower, the first absorption tower and the second absorption tower are interconnected through the connecting pipe, a second spray pipe and a third spray pipe are fixedly connected to the circumferential surface of the second absorption tower, a second liquid outlet pipe is fixedly connected to the bottom of the second absorption tower, an exhaust pipe is fixedly connected to the top of the second absorption tower, a second partition plate is fixedly connected to the interior of the second absorption tower, a foam plate B is fixedly connected to the second partition plate, and a foam plate A and a filling layer are fixedly connected to the inner circumferential surface of the second absorption tower.

[0005] According to the absorption tower for efficiently absorbing high-temperature mercuric chloride gas, the air inlet pipes are provided in plurality and are evenly distributed up and down on the circumferential surface of the first absorption tower, and the air inlet pipe is located on the left side of the first spray pipe.

[0006] According to the absorption tower for efficiently absorbing high-temperature mercuric chloride gas, a plurality of the first spray pipes are provided, and are evenly and alternately distributed up and down on the left and right sides of the first partition plate.

[0007] According to the absorption tower for efficiently absorbing high-temperature mercuric chloride gas, there are multiple second spray pipes, which are evenly distributed up and down on the left side of the second partition plate. The third spray pipe is located on the right side of the second partition plate, and the diameter of the third spray pipe is twice that of the second spray pipe.

[0008] According to the absorption tower for efficiently absorbing high-temperature mercuric chloride gas, the foam plates A and B are provided in plurality and are staggered up and down, and the foam plates A and B are provided with a plurality of through holes.

[0009] According to the absorption tower for efficiently absorbing high-temperature mercuric chloride gas, the materials of the filling layer, foam board A and foam board B are all PP ball ring fillers, and the number of the filling layers is multiple and they are staggered with the second spray pipe up and down.

[0010] According to the absorption tower for efficiently absorbing high-temperature mercuric chloride gas, the first spray pipe, the second spray pipe and the third spray pipe are all provided with spray heads, and the material of the spray heads is a silicon carbide volute spray head.

[0011] According to the absorption tower for efficiently absorbing high-temperature mercuric chloride gas, a plurality of through holes are provided on the left and right side walls of the first partition plate and the second partition plate.

[0012] The above scheme has the beneficial effects of: by arranging the first absorption tower, the second absorption tower, the air inlet pipe, the first spray pipe, the first liquid outlet pipe, the first partition plate, the connecting pipe, the second spray pipe, the third spray pipe, the second liquid outlet pipe, the exhaust pipe, the second partition plate, the foam board A, the foam board B and the filling layer, the high-temperature mercuric chloride gas is injected into the first absorption tower, and the acid solution is sprayed evenly through a plurality of spray pipes to cool the high-temperature mercuric chloride gas and then be absorbed, and the remaining gas is sprayed again through the second absorption tower for cooling and absorption, so that the mercuric chloride content in the tail gas can be completely reduced to the emission standard, which greatly improves the absorption efficiency of the mercuric chloride gas, and at the same time, the equipment structure is simple, and the removal cost is greatly reduced.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1This is a front view of the absorption tower for efficiently absorbing high-temperature mercuric chloride gas according to the utility model;

[0016] Figure 2 This is a cross-sectional view of the first absorption tower of the absorption tower for efficiently absorbing high-temperature mercuric chloride gas of the utility model;

[0017] Figure 3 This is a cross-sectional view of the second absorption tower of the utility model for efficiently absorbing high-temperature mercuric chloride gas.

[0018] Legend:

[0019] 1. The first absorption tower; 2. The second absorption tower; 3. The air inlet pipe; 4. The first spray pipe; 5. The first liquid outlet pipe; 6. The first partition plate; 7. The connecting pipe; 8. The second spray pipe; 9. The third spray pipe; 10. The second liquid outlet pipe; 11. The exhaust pipe; 12. The second partition plate; 13. The foam board A; 14. The foam board B; 15. The filling layer. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Reference Figure 1-3, the embodiment of the utility model is an absorption tower for efficiently absorbing high-temperature mercuric chloride gas, which includes: a first absorption tower 1 and a second absorption tower 2, an air inlet pipe 3 and a first spray pipe 4 are fixedly connected to the circumferential surface of the first absorption tower 1, the number of the air inlet pipes 3 is multiple, and they are evenly distributed up and down on the circumferential surface of the first absorption tower 1, the air inlet pipe 3 is located on the left side of the first spray pipe 4, the number of the first spray pipes 4 is multiple, and they are evenly staggered up and down on the left and right sides of the first partition plate 6, the bottom of the first absorption tower 1 is fixedly connected to the first liquid outlet pipe 5, the interior of the first absorption tower 1 is fixedly connected to the first partition plate 6, which is used to separate the first absorption tower 1 and increase the contact time and area between the gas and the spray liquid, a connecting pipe 7 is fixedly connected to the circumferential surface of the first absorption tower 1, the first absorption tower 1 and the second absorption tower 2 are interconnected through the connecting pipe 7, and the gas after cooling enters the second absorption tower 2 from the connecting pipe 7, and a second spray pipe 8 and a third spray pipe 9 are fixedly connected to the circumferential surface of the second absorption tower 2, the number of the second spray pipe 8 is multiple, and they are evenly staggered up and down. The second absorption tower 2 is fixedly connected to the left side of the second partition plate 12, the third spray pipe 9 is located on the right side of the second partition plate 12, the diameter of the third spray pipe 9 is twice that of the second spray pipe 8, and the incoming gas is sprayed respectively. The bottom of the second absorption tower 2 is fixedly connected to the second liquid outlet pipe 10, the top of the second absorption tower 2 is fixedly connected to the exhaust pipe 11, and the interior of the second absorption tower 2 is fixedly connected to the second partition plate 12 for separating the second absorption tower 2 and increasing the contact time and area between the gas and the spray liquid. The second partition plate 12 is fixedly connected to the bubble Foam plate B14, foam plate A13 and filling layer 15 are fixedly connected on the inner circumferential surface of the second absorption tower 2, and the number of foam plates A13 and foam plates B14 are both provided in plurality, and are staggered up and down, and multiple through holes are provided on foam plates A13 and foam plates B14, and the materials of filling layer 15, foam plates A13 and foam plates B14 are all PP ball ring fillers, so that mercuric chloride can fully contact with the spray liquid and be fully absorbed, and the number of filling layers 15 is provided in plurality, and are staggered up and down with the second spray pipe 8.

[0022] The first spray pipe 4, the second spray pipe 8 and the third spray pipe 9 are all provided with spray heads, the material of the spray heads is silicon carbide volute spray heads, and the first spray pipe 4, the second spray pipe 8 and the third spray pipe 9 are all connected to the external spray device for providing spray acid solution.

[0023] A plurality of through holes are provided on the left and right side walls of the first partition plate 6 and the second partition plate 12 so as to penetrate the two sides.

[0024] Working principle: high-temperature mercuric chloride gas is injected into the first absorption tower 1 through multiple air inlet pipes 3, and acid is sprayed evenly through multiple first spray pipes 4 to cool the high-temperature mercuric chloride gas and then be absorbed. The remaining gas then enters the second absorption tower 2 through the connecting pipe 7, and is cooled and absorbed again through the second spray pipe 8 and the third spray pipe 9, which can completely reduce the mercuric chloride content in the exhaust gas to the emission standard, and finally the exhaust gas is discharged from the exhaust pipe 11.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An absorption tower for efficiently absorbing high-temperature mercuric chloride gas, including: The first absorption tower (1) and the second absorption tower (2) are characterized in that an air inlet pipe (3) and a first spray pipe (4) are fixedly connected on the circumferential surface of the first absorption tower (1), a first liquid outlet pipe (5) is fixedly connected to the bottom of the first absorption tower (1), a first partition plate (6) is fixedly connected inside the first absorption tower (1), a connecting pipe (7) is fixedly connected to the circumferential surface of the first absorption tower (1), the first absorption tower (1) and the second absorption tower (2) are interconnected via the connecting pipe (7), a second spray pipe (8) and a third spray pipe (9) are fixedly connected on the circumferential surface of the second absorption tower (2), a second liquid outlet pipe (10) is fixedly connected to the bottom of the second absorption tower (2), an exhaust pipe (11) is fixedly connected to the top of the second absorption tower (2), a second partition plate (12) is fixedly connected inside the second absorption tower (2), a foam plate B (14) is fixedly connected to the second partition plate (12), and a foam plate A (13) and a filling layer (15) are fixedly connected to the inner circumferential surface of the second absorption tower (2).

2. The absorption tower for efficiently absorbing high-temperature mercuric chloride gas according to claim 1, characterized in that: The air inlet pipes (3) are provided in a plurality and are evenly distributed vertically on the circumferential surface of the first absorption tower (1); the air inlet pipes (3) are located on the left side of the first spray pipe (4).

3. The absorption tower for efficiently absorbing high-temperature mercuric chloride gas according to claim 1, characterized in that: The first spray pipes (4) are provided in a plurality and are evenly and alternately distributed up and down on the left and right sides of the first partition plate (6).

4. The absorption tower for efficiently absorbing high-temperature mercuric chloride gas according to claim 1, characterized in that: The second spray pipes (8) are provided in a plurality and are evenly distributed up and down on the left side of the second partition plate (12); the third spray pipe (9) is located on the right side of the second partition plate (12); and the diameter of the third spray pipe (9) is twice that of the second spray pipe (8).

5. The absorption tower for efficiently absorbing high-temperature mercuric chloride gas according to claim 1, characterized in that: The foam plates A (13) and the foam plates B (14) are provided in plural numbers and are staggered in vertical arrangement. The foam plates A (13) and the foam plates B (14) are provided with plural through holes.

6. The absorption tower for efficiently absorbing high-temperature mercuric chloride gas according to claim 1, characterized in that: The materials of the filling layer (15), the foam plate A (13) and the foam plate B (14) are all PP ball ring fillers. The number of the filling layers (15) is multiple and they are staggered with the second spray pipe (8) up and down.

7. The absorption tower for efficiently absorbing high-temperature mercuric chloride gas according to claim 1, characterized in that: The first spray pipe (4), the second spray pipe (8) and the third spray pipe (9) are all provided with spray heads, and the spray heads are made of silicon carbide volute spray heads.

8. The absorption tower for efficiently absorbing high-temperature mercuric chloride gas according to claim 1, characterized in that: A plurality of through holes are provided on the left and right side walls of the first partition plate (6) and the second partition plate (12).

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