Air inlet pipeline system and oxygen pressure leaching device

Abstract

The utility model provides a gas inlet pipeline system and oxygen pressure leaching device, relates to oxygen pressure kettle technical field, the gas inlet pipeline system provided in the utility model comprises a gas inlet pipe, a cooling pipe and a main pipe, the gas inlet pipe and the cooling pipe are both communicated with the main pipe, the gas inlet pipe is configured to convey oxygen-containing gas to the main pipe, and the cooling pipe is configured to convey oxygen-containing gas to the main pipe. The cooling pipe is configured to convey a cooling medium to the main pipe, and the main pipe is configured to communicate with the reaction kettle. According to the air inlet pipeline system, the risk of combustion of the air inlet pipe can be effectively avoided, and the safety and the stability of system operation are higher.

Description

Technical Field

[0001] This utility model relates to the field of oxygen pressure vessel technology, and in particular to an air inlet pipeline system and an oxygen pressure leaching device. Background Technology

[0002] In the field of hydrometallurgy, oxygen pressure vessels are widely used as an important piece of equipment to extract valuable metals from ores or secondary resources. Hydrometallurgical processes typically involve crushing the ore, mixing it with a suitable leaching agent, and reacting it under specific temperature and pressure conditions to dissolve the metal. During this process, a sufficient supply of oxygen is crucial for accelerating the oxidation reaction and improving the leaching effect.

[0003] In traditional designs, air or oxygen feed lines are directly connected to the interior of the oxygen autoclave, allowing the gas to enter the autoclave environment directly. However, because the interior of the oxygen autoclave operates under high temperature and pressure, and contains flammable substances, this direct feed method poses certain safety hazards if not handled properly. Especially under unstable operating conditions or in case of emergencies, there is a risk of pipeline combustion, threatening production safety. Utility Model Content

[0004] The purpose of this invention is to provide an intake pipe system that effectively avoids the risk of intake pipe combustion, resulting in higher system safety and stability. Additionally, an oxygen pressure leaching device incorporating the aforementioned intake pipe system is provided.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] In a first aspect, the present invention provides an air intake pipeline system, including an air intake pipe, a cooling pipe and a main pipe, wherein the air intake pipe and the cooling pipe are both connected to the main pipe, the air intake pipe is configured to deliver oxygen-containing gas to the main pipe, the cooling pipe is configured to deliver a cooling medium to the main pipe, and the main pipe is configured to be connected to a reaction vessel.

[0007] Furthermore, the intake piping system also includes a mixing pipe, which is connected to the intake pipe, the cooling pipe and the main pipe respectively, so as to deliver the mixture after mixing by the intake pipe and the cooling pipe to the main pipe.

[0008] Furthermore, the mixing pipe is provided with a first valve, which is configured to allow the mixture of oxygen-containing gas and cooling medium to flow unidirectionally to the main pipe.

[0009] Furthermore, the main pipe includes a first pipe section and a second pipe section. The first pipe section is configured to extend into the reactor. The second pipe section is detachably connected to the first pipe section and is configured to extend out of the reactor. The air inlet pipe and the cooling pipe are both connected to the second pipe section.

[0010] Furthermore, the first pipe section has a corrosion-resistant coating.

[0011] Furthermore, the second pipe section is equipped with a second valve, which is configured to control the on / off state of the second pipe section.

[0012] Furthermore, the air intake pipeline system also includes a sewage discharge pipeline and a sewage discharge valve installed on the sewage discharge pipeline, wherein the sewage discharge pipeline is configured to be connected to the reaction vessel.

[0013] Furthermore, the sewage pipe is connected to the main pipe so as to communicate with the reaction vessel through the main pipe.

[0014] Secondly, this utility model provides an oxygen pressure leaching device, including a reaction vessel and an air inlet pipeline system as described in any of the foregoing embodiments, wherein the reaction vessel is connected to the main pipe.

[0015] Furthermore, the reactor is equipped with a stirring paddle, and the end of the main pipe extends into the reactor, with the opening of the end of the main pipe facing the stirring paddle.

[0016] The air intake pipeline system and oxygen pressure leaching device provided by this utility model can produce the following beneficial effects:

[0017] When oxygen is needed in the reactor, oxygen-containing gas can be introduced into the inlet pipe, while cooling medium is introduced into the cooling pipe at the same time. After the oxygen-containing gas and cooling medium are mixed, they enter the reactor from the main pipe and react under certain temperature and pressure conditions to achieve metal extraction.

[0018] Compared with the prior art, the oxygen-containing gas in the air intake pipeline system provided by the first aspect of this utility model can be mixed with the cooling medium and then enter the reactor through the main pipe, which can effectively avoid the risk of combustion in the air intake pipeline and make the system safer and more stable.

[0019] The oxygen pressure leaching device provided in the second aspect of this utility model has the air intake pipeline system provided in the first aspect of this utility model, and thus has all the beneficial effects of the air intake pipeline system provided in the first aspect of this utility model. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of an oxygen pressure leaching device provided in an embodiment of the present invention.

[0022] Icons: 1-Inlet pipe; 2-Cooling pipe; 3-Main pipe; 31-First pipe section; 32-Second pipe section; 4-Reaction vessel; 41-Agitator; 5-Mixing pipe; 6-First valve; 7-Second valve; 8-Drain pipe; 9-Drain valve. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0027] The first aspect of this utility model provides an intake piping system, such as... Figure 1 As shown, it includes an inlet pipe 1, a cooling pipe 2, and a main pipe 3. Both the inlet pipe 1 and the cooling pipe 2 are connected to the main pipe 3. The inlet pipe 1 is configured to deliver oxygen-containing gas to the main pipe 3, and the cooling pipe 2 is configured to deliver a cooling medium to the main pipe 3. The main pipe 3 is configured to be connected to the reactor 4.

[0028] The process of using the nickel sulfate preparation technology from nickel matte is explained in detail below:

[0029] When oxygen is needed in the reactor, oxygen-containing gas can be introduced into the inlet pipe, while cooling medium is introduced into the cooling pipe at the same time. After the oxygen-containing gas and cooling medium are mixed, they enter the reactor through the main pipe and react under the conditions of 150℃~200℃ and 1.5MPaG~2MPaG, causing metallic nickel to leach into the liquid, while most of the impurities such as iron and magnesium remain in the leaching residue.

[0030] It is understandable that the above-mentioned reactor can be an oxygen pressure vessel.

[0031] Of course, the above-mentioned air intake pipeline system is not limited to the application of nickel sulfate preparation technology of nickel matte, but can also be applied to other metal extraction technologies.

[0032] Compared to existing technologies, the intake pipe system provided in the first aspect of this utility model allows oxygen-containing gas to mix with a cooling medium and then enter the reactor 4 through the main pipe 3. When the oxygen-containing gas and cooling medium mix, the cooling medium acts as a physical separator, enveloping the oxygen-containing gas and preventing it from being highly concentrated as in a separate pipe. As the mixture of oxygen-containing gas and cooling medium flows in the main pipe 3, the presence of the cooling medium absorbs and disperses heat, effectively avoiding the risk of combustion in the intake pipe and enhancing the safety and stability of the system operation.

[0033] Another noteworthy point is that after the oxygen-containing gas is mixed with the cooling medium, the oxygen in the mixture discharged from the main pipe 3 is more dispersed. After the mixture enters the reactor 4, it is less likely to experience turbulence or pulsation like when oxygen-containing gas is alone, thus improving oxygen utilization and reducing oxygen consumption.

[0034] The oxygen-containing gas can be oxygen, air, or a mixture of oxygen and other stable gases. There are no strict limitations on the composition of the oxygen-containing gas; users can choose according to their actual needs. The cooling medium can be a coolant or a cooling medium in other states.

[0035] Specifically, the inlet pipe 1 and the cooling pipe 2 can be directly connected to the main pipe 3, either at the same height or at different heights; or the inlet pipe 1 and the cooling pipe 2 can merge and then be connected to the main pipe 3, directly conveying the mixture into the main pipe 3. Regardless of the method, the oxygen-containing gas and the cooling medium can be mixed and discharged together into the reactor 4.

[0036] In alternative implementations, such as Figure 1 As shown, the intake piping system also includes a mixing pipe 5, which is connected to the intake pipe 1, the cooling pipe 2 and the main pipe 3 respectively, so as to transport the mixture after the intake pipe 1 and the cooling pipe 2 are mixed to the main pipe 3.

[0037] The intake pipe 1 and cooling pipe 2 are connected to the main pipe 3 via a mixing pipe 5. Compared to direct connection between the intake pipe 1 and cooling pipe 2 and the main pipe 3, the design of the mixing pipe 5 allows for a longer contact time and a larger contact area between the oxygen-containing gas and the cooling medium before they enter the main pipe 3, thereby increasing the mixing opportunity and significantly improving the mixing uniformity. Furthermore, if the oxygen-containing gas and cooling medium were to mix directly within the main pipe 3, it might generate significant jet impact and turbulence, affecting the stability and reliability of the system. The above-described implementation mitigates this impact, allowing the two to reach a smoother state upon entering the main pipe 3, which is beneficial for the stable operation of the entire system.

[0038] Specifically, such as Figure 1 As shown, the intake pipe 1 and the cooling pipe 2 can be connected to one end of the mixing pipe 5, and the main pipe 3 is connected to the other end of the mixing pipe 5.

[0039] In an optional implementation, to prevent backflow of material, such as Figure 1 As shown, a first valve 6 is provided on the mixing pipe 5. The first valve 6 is configured to allow the mixture of oxygen-containing gas and cooling medium to flow unidirectionally to the main pipe 3.

[0040] Among them, the first valve 6 can be a check valve or a one-way valve, etc.

[0041] Check valves can be specifically classified as swing check valves, lift check valves, disc check valves, or ball check valves.

[0042] In alternative implementations, such as Figure 1 As shown, the main pipe 3 includes a first pipe section 31 and a second pipe section 32. The first pipe section 31 is configured to extend into the reactor 4, and the second pipe section 32 is configured to extend out of the reactor 4. The air inlet pipe 1 and the cooling pipe 2 are both connected to the second pipe section 32.

[0043] In the above embodiment, the first pipe section 31 of the main pipe 3 can extend into the reactor 4, allowing the discharged mixture to penetrate deeper into the reactor 4 and more easily disperse evenly throughout the reactor cavity. Furthermore, if the discharged mixture is discharged directly from the edge of the container, it can easily lead to the accumulation of reaction-generated deposits at the mixture outlet on the first pipe section 31, thus clogging the first pipe section 31. By extending it into the reactor 4, the probability of deposit accumulation at the mixture outlet can be significantly reduced, which is beneficial for the smooth progress of the reaction.

[0044] Specifically, the first pipe section 31 can be a straight pipe. The first pipe section 31 and the second pipe section 32 are detachably connected. If the first pipe section 31 is worn in the future, it can be quickly removed and replaced, which is convenient for the user.

[0045] The first pipe section 31 and the second pipe section 32 can be detachably connected by a flange, which has the advantages of strong connection reliability and convenient disassembly and assembly.

[0046] Specifically, the second pipe section 32 can also be detachably connected to the reactor 4 so that the entire main pipe 3 can be removed from the reactor 4.

[0047] The second pipe section 32 can also be detachably connected to the reactor 4 via a flange, and a sealing structure such as a sealing ring can be installed between the two to ensure their airtightness.

[0048] In an optional embodiment, when the material of the first pipe section 31 is metal, the first pipe section 31 has a corrosion-resistant cladding layer.

[0049] Specifically, the coating can cover the outside of the first pipe section 31 to prevent the first pipe section 31 from being corroded.

[0050] The material of the coating layer can be plastic.

[0051] In alternative implementations, such as Figure 1 As shown, the second pipe section 32 is equipped with a second valve 7, which is configured to control the on / off state of the second pipe section 32.

[0052] This intake piping system can achieve continuous automatic control by installing a second valve 7. When the second valve 7 is open, the second pipe section 32 is in a conducting state; when the second valve 7 is closed, the second pipe section 32 is in a disconnected state.

[0053] The second valve 7 can be a ball valve, butterfly valve, gate valve, or solenoid valve, etc.

[0054] In alternative implementations, such as Figure 1 As shown, the air intake pipeline system also includes a sewage pipe 8 and a sewage valve 9 installed on the sewage pipe 8. The sewage pipe 8 is configured to be connected to the reactor 4.

[0055] During the shutdown phase, the drain valve 9 is opened, and the waste liquid in the reactor 4 can be directly discharged into the waste liquid pool through the drain valve 9 on the drain pipe 8, thus protecting the environment.

[0056] Among them, the sewage discharge pipe 8 can be directly connected to the bottom of the reactor 4, and is set independently of the main pipe 3. The sewage discharge pipe 8 can also be connected to the reactor 4 through the main pipe 3.

[0057] In alternative implementations, such as Figure 1 As shown, in order to simplify the structure of the pipeline system, the sewage pipe 8 is connected to the second pipe section 32 in the main pipe 3, so as to connect with the reactor 4 through the main pipe 3.

[0058] During shutdown, open the second valve 7 and the drain valve 9, allowing the waste liquid in the reactor 4 to be directly discharged into the waste liquid pool through the drain valve 9. During operation, the second valve 7 is open and the drain valve 9 is closed to prevent the mixture from being discharged through the drain valve 9.

[0059] Specifically, both the drain pipe 8 and the main pipe 3 extend vertically so that the waste liquid in the reactor 4 can be discharged through the drain valve 9 on the drain pipe 8.

[0060] In summary, the above-mentioned intake piping system has the following advantages:

[0061] 1. In this system, oxygen and cooling medium are simultaneously injected into the reactor 4 through the main pipe 3, thus avoiding the risk of pipeline combustion;

[0062] 2. The second pipe section 32 is detachably connected to the first pipe section 31. If the first pipe section 31 is worn later, it can be quickly removed and replaced.

[0063] 3. Improved oxygen utilization efficiency;

[0064] 4. The first pipe section 31 has a corrosion-resistant coating, making it less prone to wear and corrosion, and less likely to clog.

[0065] 5. This pipeline system can achieve continuous automatic control by installing the second valve 7;

[0066] 6. The sewage pipe 8 in this system can be connected to the main pipe 3, which facilitates the rapid discharge of waste liquid during shutdown and ensures efficient production operation.

[0067] The second aspect of this utility model provides an oxygen pressure leaching device, which includes a reaction vessel 4 and the aforementioned air inlet pipeline system, wherein the reaction vessel 4 is connected to the main pipe 3.

[0068] The oxygen pressure leaching apparatus provided in the second aspect of this utility model has the air intake pipeline system provided in the first aspect of this utility model, thereby having all the beneficial effects of the air intake pipeline system provided in the first aspect of this utility model.

[0069] In the above-mentioned oxygen pressure leaching device, the main pipe 3 can be connected to the bottom of the reactor 4, or to the side or top of the reactor 4.

[0070] In other words, the connection position between the main pipe 3 and the reactor 4 is not specifically limited, and users can choose according to their actual needs.

[0071] In alternative implementations, such as Figure 1 As shown, the reactor 4 is equipped with a stirring paddle 41, and the first pipe section 31 of the main pipe 3 extends into the reactor 4, with the opening at the end of the main pipe 3 facing the stirring paddle 41.

[0072] The above method allows the mixture of oxygen-containing gas and cooling medium ejected from the opening to flow directly to the stirring paddle 41. The shear force of the stirring paddle 41 makes the distribution of oxygen-containing gas and cooling medium in the reactor 4 more uniform. This uniform distribution not only helps to improve the heat transfer and mass transfer efficiency of the entire system, but also avoids excessive enrichment or sparseness in local areas, ensuring the consistency and stability of the entire reaction process.

[0073] In addition, due to the more uniform mixing, oxygen-containing gas can be utilized more effectively throughout the reaction system, thereby reducing oxygen waste. This is of great significance for reducing production costs and improving energy efficiency.

[0074] Based on the above implementation method, the part of the main pipe 3 that extends into the reactor 4 is located below the agitator 41.

[0075] The above method facilitates the flow of waste liquid from the main pipe 3 into the drain pipe 8, and finally discharges it from the drain valve 9 on the drain pipe 8.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An intake piping system, characterized in that, It includes an air inlet pipe (1), a cooling pipe (2) and a main pipe (3). The air inlet pipe (1) and the cooling pipe (2) are both connected to the main pipe (3). The air inlet pipe (1) is configured to deliver oxygen-containing gas to the main pipe (3). The cooling pipe (2) is configured to deliver a cooling medium to the main pipe (3). The main pipe (3) is configured to be connected to the reactor (4).

2. The intake piping system according to claim 1, characterized in that, The intake piping system also includes a mixing pipe (5), which is connected to the intake pipe (1), the cooling pipe (2) and the main pipe (3) respectively, so as to transport the mixture after the intake pipe (1) and the cooling pipe (2) are mixed to the main pipe (3).

3. The intake piping system according to claim 2, characterized in that, The mixing pipe (5) is provided with a first valve (6), which is configured to allow a mixture of oxygen-containing gas and cooling medium to flow unidirectionally to the main pipe (3).

4. The intake piping system according to claim 1, characterized in that, The main pipe (3) includes a first pipe section (31) and a second pipe section (32). The first pipe section (31) is configured to extend into the reactor (4). The second pipe section (32) is detachably connected to the first pipe section (31) and is configured to extend out of the reactor (4). The air inlet pipe (1) and the cooling pipe (2) are both connected to the second pipe section (32).

5. The intake piping system according to claim 4, characterized in that, The first pipe section (31) has a corrosion-resistant coating.

6. The intake piping system according to claim 4, characterized in that, The second pipe section (32) is provided with a second valve (7), which is configured to control the opening and closing of the second pipe section (32).

7. The intake piping system according to any one of claims 1-6, characterized in that, The air intake pipeline system also includes a sewage pipe (8) and a sewage valve (9) installed on the sewage pipe (8), the sewage pipe (8) being configured to be connected to the reactor (4).

8. The intake piping system according to claim 7, characterized in that, The sewage pipe (8) is connected to the main pipe (3) so as to communicate with the reactor (4) through the main pipe (3).

9. An oxygen pressure leaching apparatus, characterized in that, It includes a reactor (4) and an air intake piping system as described in any one of claims 1-8, wherein the reactor (4) is connected to the main pipe (3).

10. The oxygen pressure leaching apparatus according to claim 9, characterized in that, The reactor (4) is equipped with a stirring paddle (41), and the end of the main pipe (3) extends into the reactor (4), with the opening of the end of the main pipe (3) facing the stirring paddle (41).

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