Pressure leaching flash evaporation tail gas exhaust transfer tank

Abstract

The utility model discloses a pressure leaching flash evaporation tail gas exhaust transfer tank, which relates to the technical field of chemical equipment auxiliary devices and comprises a tank body, the tank body is of a cylinder structure with two open ends, one end of the tank body is an air inlet, and the other end of the tank body is detachably connected with a cover body. A first anti-corrosion layer is fixed between the cover body and the end face of a port of the tank body, one side wall of the tank body is connected with an exhaust channel communicated with an inner cavity of the tank body, and a three-way tank body structure is formed by the tank body and the exhaust channel. According to the pressure leaching flash evaporation tail gas exhaust transfer tank, part of scouring force generated by factors such as pressure of the pressure leaching flash evaporation tail gas exhaust transfer tank can be counteracted with the interior of the three-way tank body, direct scouring of flash evaporation tail gas to the tank body is reduced, meanwhile, the tank body can be effectively prevented from being corroded and abraded by factors such as acid mist, temperature and particulate matter due to the arrangement of the first anti-corrosion layer, and therefore the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices for chemical equipment, and more specifically to a pressure leaching flash evaporation tail gas exhaust adapter tank. Background Art

[0002] The leached slurry from the autoclave is continuously discharged into the flash tank for buffering, depressurization and temperature reduction to separate the flash steam from the leached slurry. The generated flash steam is usually discharged through a flash tail gas exhaust device. Most of the existing flash tail gas exhaust devices are stainless steel pipeline structures. The tail gas enters from one end and is directly discharged from the other end. During the tail gas discharge process, it carries a certain amount of pressure (100-450KPa), which will cause certain impact and wear on the discharge end of the pipeline structure. At the same time, the tail gas also carries acid mist, temperature (120-135℃) and microparticles, which cause serious corrosion and wear to its internal structure, causing leakage of the flash tail gas exhaust device and shortening its service life. When the leakage is serious, the autoclave will be replaced and shut down, which will seriously affect the safe, stable and continuous operation of the pressurized leaching, and at the same time cause the working environment to be foggy, affecting the occupational health of employees.

[0003] Therefore, how to provide a flash exhaust gas exhaust adapter tank with a simple structure, which can effectively improve the working environment, extend the service life, and enhance the stability and continuous operation of pressurized leaching, is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] In view of this, the utility model provides a pressurized leaching flash evaporation tail gas exhaust adapter tank, aiming to solve the above technical problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pressurized leaching flash tail gas exhaust adapter tank comprises a tank body, which is a cylindrical structure with openings at both ends. One end of the tank body is an air inlet, and the other end is detachably connected to a cover body. A first anti-corrosion layer is fixed between the cover body and the end face of the tank body port, and one side wall of the tank body is connected to an exhaust channel connected to its inner cavity.

[0007] Through the above technical scheme, the utility model provides a pressurized leaching flash exhaust gas exhaust adapter tank. When the flash exhaust gas enters the tank body, the structural setting of the three-way tank body formed by the tank body and the exhaust channel can achieve the scouring force generated by the pressure and other factors of the pressurized leaching flash exhaust gas exhaust adapter tank and the three-way tank body to offset a part of it, thereby reducing the direct scouring of the tank body by the flash exhaust gas. At the same time, the setting of the first anti-corrosion layer can effectively prevent the tank body from being corroded and worn by factors such as acid mist, temperature, and particulate matter, thereby extending its service life.

[0008] Preferably, in the above-mentioned pressure leaching flash tail gas exhaust adapter tank, the inner side wall of the tank body and the inner side wall of the exhaust channel are both fixed with a second anti-corrosion layer, which can effectively avoid corrosion and wear caused by acid mist, temperature, and particulate matter carried in the tail gas, and extend the service life.

[0009] Preferably, in the above-mentioned pressure leaching flash tail gas exhaust transfer tank, the first anti-corrosion layer and the second anti-corrosion layer are made of silicon carbide anti-corrosion bricks, which can improve the impact resistance of the tank body.

[0010] Preferably, in the above-mentioned pressure leaching flash tail gas exhaust transfer tank, the thickness of the first anti-corrosion layer and the second anti-corrosion layer are both 35 mm. The structure is more stable and wear-resistant.

[0011] Preferably, in the above-mentioned pressure leaching flash tail gas exhaust adapter tank, a blind plate is sandwiched between the cover and the first anti-corrosion layer. After the pressurized gas enters the interior of the tank, it directly impacts the blind plate and the cover. The blind plate and the cover structure cooperate to form a seal between the cover and the interior of the tank, further effectively preventing gas leakage.

[0012] Preferably, in the above-mentioned pressure leaching flash tail gas exhaust adapter tank, the blind plate is a silicon carbide blind plate with a thickness of 3-5 mm, which makes the structure more stable.

[0013] Preferably, in the above-mentioned pressure leaching flash tail gas exhaust adapter tank, the exhaust channel is located in the middle of the tank body and is fixed to the side wall of the tank body through a flange. The structure is simple and stable.

[0014] It can be seen from the above technical solution that, compared with the prior art, the utility model discloses a pressurized leaching flash evaporation tail gas exhaust adapter tank, which has the following beneficial effects:

[0015] The utility model discloses a three-way tank body formed by a tank body and an exhaust passage, which can offset part of the scouring force generated by the pressure and other factors of the pressurized leaching flash exhaust gas exhaust adapter tank with the three-way tank body, thereby reducing the scouring of the tank body directly by the flash exhaust gas. At the same time, the provision of the first anti-corrosion layer and the second anti-corrosion layer effectively prevents the tank body from being corroded and worn by factors such as acid mist, temperature and particulate matter, thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 The accompanying drawing is a schematic structural diagram of the pressurized leaching flash evaporation tail gas exhaust tank provided by the utility model.

[0018] in:

[0019] 1-tank body;

[0020] 2- Air inlet;

[0021] 3-cover;

[0022] 4- first anticorrosion layer;

[0023] 5- Exhaust channel;

[0024] 6-Blind plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See attached Figure 1 The utility model discloses a pressurized leaching flash tail gas exhaust adapter tank, comprising a tank body 1, which is a cylindrical structure with openings at both ends. One end of the tank body 1 is an air inlet 2, and the other end is detachably connected to a cover body 3. A first anti-corrosion layer 4 is fixed between the cover body 3 and the end face of the tank body 1 port, and a side wall of the tank body 1 is connected to an exhaust channel 5 connected to its inner cavity.

[0027] The air inlet of the tank body 1 is connected to the flash tank through a flange, and the tail gas discharged from the flash tank enters the tank body and is discharged through the exhaust channel 5. The outlet end of the exhaust channel 5 is connected to a tail gas collection device.

[0028] In order to further optimize the above technical solution, the first anti-corrosion layer 4 is fixed at the top port of the tank body 1, a blind plate 6 is fixed on the upper surface of the first anti-corrosion layer 4, the cover body 3 is located on the upper surface of the blind plate 6, and is fixedly connected to the top of the tank body 1 through a flange.

[0029] In order to further optimize the above technical solution, a second anti-corrosion layer is fixed to the inner wall of the tank body 1 and the inner wall of the exhaust passage 5 .

[0030] In order to further optimize the above technical solution, the first anti-corrosion layer 4 and the second anti-corrosion layer are made of silicon carbide anti-corrosion bricks.

[0031] In order to further optimize the above technical solution, the thickness of the first anti-corrosion layer 4 and the second anti-corrosion layer are both 35 mm. The thickness of the first anti-corrosion layer and the second anti-corrosion layer can also be determined as needed.

[0032] In order to further optimize the above technical solution, a blind plate 6 is sandwiched between the cover body 3 and the first anti-corrosion layer 4 .

[0033] In order to further optimize the above technical solution, the blind plate 6 is a silicon carbide blind plate with a thickness of 3-5 mm. The thickness of the blind plate can also be determined as needed.

[0034] In order to further optimize the above technical solution, the exhaust passage 5 is located in the middle of the tank body 1 and is fixed to the side wall of the tank body 1 through a flange.

[0035] In order to further optimize the above technical solution, the outlet end of the exhaust pipe 5 is connected to the exhaust gas collecting device, and the flow rate or flow velocity of the exhaust gas entering the exhaust gas collecting device is controlled by the valve group (gas valve) of the exhaust gas collecting device. At the same time, the exhaust gas collecting device is provided with an exhaust gas washing system to wash the exhaust gas entering the exhaust gas collecting device and recover the waste heat. The exhaust gas is discharged after being washed by the washing system.

[0036] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressure leaching flash tail gas exhaust transfer tank, characterized in that: The invention comprises a tank body (1), wherein the tank body (1) is a cylindrical structure with openings at both ends, one end of the tank body (1) is an air inlet (2), and the other end is detachably connected to a cover body (3), a first anti-corrosion layer (4) is fixed between the cover body (3) and the end surface of the port of the tank body (1), and a side wall of the tank body (1) is connected to an exhaust passage (5) communicating with its inner cavity.

2. A pressure leaching flash tail gas exhaust transfer tank according to claim 1, characterized in that: The inner wall of the tank body (1) and the inner wall of the exhaust passage (5) are both fixed with a second anti-corrosion layer.

3. A pressure leaching flash tail gas exhaust transfer tank according to claim 2, characterized in that: The first anti-corrosion layer (4) and the second anti-corrosion layer are made of silicon carbide anti-corrosion bricks.

4. The pressure leaching flash tail gas exhaust transfer tank according to claim 1, characterized in that: A blind plate (6) is sandwiched between the cover body (3) and the first anti-corrosion layer (4).

5. A pressure leaching flash tail gas exhaust transfer tank according to claim 4, characterized in that: The blind plate (6) is a silicon carbide blind plate with a thickness of 3-5 mm.

6. The pressure leaching flash tail gas exhaust transfer tank according to claim 1, characterized in that: The exhaust passage (5) is located in the middle of the tank body (1) and is fixed to the side wall of the tank body (1) via a flange.

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