A sulfuric acid process tail gas treatment device for lithium extraction

Abstract

This utility model proposes a tail gas treatment device for lithium extraction using the sulfuric acid process, comprising: a tail gas treatment device, a reaction device, and an oxygenation mechanism. The reaction device is installed outside the tail gas treatment device, and the oxygenation mechanism is also located outside the tail gas treatment device. The oxygenation mechanism includes a conveying pipe, a collection chamber, a mounting frame, a drive component, and an inlet vortex. One end of the conveying pipe is connected to the tail gas treatment device, and the other end is connected to the collection chamber. The mounting frame is installed on the outer wall of the collection chamber, and the drive component is mounted on the mounting frame. The inlet vortex is connected to the output end of the drive component. This embodiment of the sulfuric acid process tail gas treatment device injects air into the tail gas treatment device through the oxygenation mechanism, increasing its oxygen concentration and promoting the reaction rate and extent of sulfur dioxide and other substances in the tail gas with the alkaline solution. This ensures the oxidation reaction proceeds fully, thereby improving desulfurization efficiency and treatment effect.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium extraction by sulfuric acid process, and in particular to an acidification tail gas treatment device for lithium extraction by sulfuric acid process. Background Technology

[0002] The sulfuric acid process for lithium extraction is a metallurgical method that uses spodumene concentrate as raw material to produce lithium carbonate through sulfation roasting. It belongs to the smelting technology in the field of metallurgical engineering. Compared with the lime process, this method has the advantages of high lithium yield, low energy consumption, and low cost, and has become the mainstream process for industrial production of lithium carbonate. When performing the sulfuric acid process for lithium extraction, a tail gas treatment device is required to purify the tail gas.

[0003] Currently, traditional sulfuric acid process lithium extraction tail gas treatment devices face challenges when treating tail gas. Due to the complex composition of the tail gas and its high particulate matter content, the oxygen content in the device and tail gas becomes unstable during long-term operation, leading to abnormal conversion concentrations of pollutants and making it difficult to meet environmental standards. Therefore, it is necessary for staff to manually add oxygen. However, manual oxygen addition is not only complicated but also exposes staff to the risk of injury from the tail gas. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0005] Therefore, one objective of this utility model is to provide a sulfuric acid process lithium extraction tail gas treatment device. By injecting air into the tail gas treatment device through an oxygenation mechanism, the oxygen concentration is increased, which promotes the reaction rate and degree of substances such as sulfur dioxide in the tail gas with the alkaline solution, ensuring that the oxidation reaction is fully carried out, thereby improving the desulfurization efficiency and treatment effect.

[0006] To achieve the above objectives, the first aspect of this utility model proposes a tail gas treatment device for lithium extraction using the sulfuric acid process, comprising: a tail gas treatment device, a reaction device, and an oxygenation mechanism. The reaction device is installed outside the tail gas treatment device, and the oxygenation mechanism is located outside the tail gas treatment device. The oxygenation mechanism includes a conveying pipe, a collection chamber, a mounting frame, a drive component, and an air inlet vortex. One end of the conveying pipe is connected to the tail gas treatment device, and the other end of the conveying pipe is connected to the collection chamber. The mounting frame is installed on the outer wall of the collection chamber, the drive component is installed on the mounting frame, and the air inlet vortex is connected to the output end of the drive component.

[0007] In addition, the sulfuric acid process lithium extraction tail gas treatment device proposed above according to this utility model may also have the following additional technical features:

[0008] Specifically, the exhaust gas treatment device is equipped with a waste heat recovery mechanism. The waste heat recovery mechanism includes an inlet pipe, a gas conveying component, a gas conveying pipe, a heat exchange chamber, and an outlet pipe. One end of the inlet pipe is connected to the exhaust gas treatment device, and the other end of the inlet pipe is connected to the input end of the gas conveying component. One end of the gas conveying pipe is connected to the output end of the gas conveying component, and the other end of the gas conveying pipe is connected to the heat exchange chamber. One end of the outlet pipe is connected to the heat exchange chamber, and the other end of the outlet pipe is connected to the reaction device.

[0009] Specifically, a mounting bracket is installed on the outer wall of the gas transmission component.

[0010] Specifically, a barometer is installed on the gas pipeline.

[0011] Specifically, a safety valve is installed on the gas pipeline.

[0012] Specifically, a flange ring is installed at the connection between the delivery pipe and the exhaust gas treatment device.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The sulfuric acid process lithium extraction tail gas treatment device of the present invention injects air into the tail gas treatment device through an oxygenation mechanism to increase its oxygen concentration, promote the reaction rate and degree of sulfur dioxide and other substances in the tail gas with alkaline solution, and ensure that the oxidation reaction is fully carried out, thereby improving the desulfurization efficiency and treatment effect. At the same time, the setting of the waste heat recovery mechanism and the coordinated use of the gas conveying component and the heat exchange chamber transport part of the gas treated by the tail gas treatment device to the reaction device to realize heat energy recovery, reduce fuel consumption, and achieve energy saving and emission reduction.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 This is a schematic diagram of a sulfuric acid process lithium extraction tail gas treatment device according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the oxygenation mechanism of a sulfuric acid process lithium extraction tail gas treatment device according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the waste heat recovery mechanism of a sulfuric acid process lithium extraction tail gas treatment device according to an embodiment of the present invention.

[0019] Figure 4This is a schematic diagram of the structure of a sulfuric acid process lithium extraction tail gas treatment device using a pressure gauge and a safety valve in conjunction with an embodiment of the present invention.

[0020] Reference numerals in the attached drawings: 1. Exhaust gas treatment device; 2. Oxygenation mechanism; 21. Delivery pipe; 22. Collection chamber; 23. Mounting frame; 24. Drive component; 25. Inlet swirl vane; 26. Flange ring; 3. Waste heat recovery mechanism; 31. Inlet pipe; 32. Gas delivery component; 33. Gas delivery pipe; 34. Heat exchange chamber; 35. Outlet pipe; 4. Reaction device; 5. Fixing frame; 6. Barometer; 7. Safety valve. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0022] The following describes an embodiment of the present invention, an acidification tail gas treatment device for lithium extraction using the sulfuric acid process, with reference to the accompanying drawings.

[0023] like Figures 1-4 As shown in the figure, an embodiment of the present invention provides a tail gas treatment device for lithium extraction by sulfuric acid process, comprising: a tail gas treatment device 1, a reaction device 4, and an oxygenation mechanism 2.

[0024] The reaction device 4 is installed outside the exhaust gas treatment device 1.

[0025] The oxygenation mechanism 2 is located outside the exhaust gas treatment device 1.

[0026] The oxygenation mechanism 2 includes a delivery pipe 21, a collection chamber 22, a mounting frame 23, a drive component 24, and an air inlet swirl vane 25. One end of the delivery pipe 21 is connected to the exhaust gas treatment device 1, and the other end of the delivery pipe 21 is connected to the collection chamber 22. The mounting frame 23 is installed on the outer wall of the collection chamber 22, the drive component 24 is installed on the mounting frame 23, and the air inlet swirl vane 25 is connected to the output end of the drive component 24.

[0027] It should be noted that the driving component 24 described in the utility model embodiment of this application is a motor, which is mainly responsible for driving the air intake swivel 25 to deliver air to the collection chamber 22.

[0028] Specifically, when the exhaust gas treatment device 1 treats the exhaust gas, the oxygen addition mechanism 2 increases the oxygen content in the exhaust gas treatment device 1, making the exhaust gas treatment reaction more complete and enhancing the exhaust gas treatment effect. First, the drive component 24 fixed on the mounting bracket 23 is activated. The drive component 24 drives the air intake swivel 25 to transport outside air to the collection chamber 22. Then, the oxygen collected in the collection chamber 22 is transported to the exhaust gas treatment device 1 through the delivery pipe 21, increasing the oxygen content in the exhaust gas treatment device 1 and making the reaction more complete.

[0029] In one embodiment of this application, such as Figure 3 As shown, a waste heat recovery mechanism 3 is provided on the outside of the exhaust gas treatment device 1.

[0030] The waste heat recovery mechanism 3 includes an inlet pipe 31, an air supply component 32, an air supply pipe 33, a heat exchange chamber 34, and an outlet pipe 35.

[0031] One end of the intake pipe 31 is connected to the exhaust gas treatment device 1, and the other end of the intake pipe 31 is connected to the input end of the gas delivery component 32. One end of the gas delivery pipe 33 is connected to the output end of the gas delivery component 32, and the other end of the gas delivery pipe 33 is connected to the heat exchange chamber 34. One end of the exhaust pipe 35 is connected to the heat exchange chamber 34, and the other end of the exhaust pipe 35 is connected to the reaction device 4.

[0032] It should be noted that the gas conveying component 32 described in the utility model embodiment of this application is a fan, which is mainly responsible for conveying part of the gas processed by the exhaust gas treatment device 1 to the heat exchange chamber 34 for heating, and then conveying it to the reaction device 4.

[0033] Specifically, after the exhaust gas treatment device 1 treats the exhaust gas, the waste heat recovery mechanism 3 enables the reuse of heat energy, reducing fuel consumption and achieving energy conservation and emission reduction. First, the gas delivery component 32 is activated, and part of the gas treated by the exhaust gas treatment device 1 is transported to the heat exchange chamber 34 through the inlet pipe 31 and the delivery pipe 33. Then, the gas is heated to a certain temperature in the heat exchange chamber 34 and then transported to the reaction device 4 through the outlet pipe 35 to provide heat for the reaction in the reaction device 4, reducing fuel consumption and achieving energy conservation and emission reduction.

[0034] In one embodiment of this application, such as Figure 4 As shown, a fixing bracket 5 is installed on the outer wall of the gas transmission component 32.

[0035] Understandably, the installation of the mounting bracket 5 enhances the stability of the gas delivery component 32 during operation.

[0036] In one embodiment of this application, such as Figure 4 As shown, a barometer 6 is installed on the gas pipeline 33.

[0037] Understandably, the pressure of the gas transported in the waste heat recovery mechanism 3 is detected by installing the barometer 6.

[0038] In one embodiment of this application, such as Figure 4 As shown, a safety valve 7 is installed on the gas pipeline 33.

[0039] Understandably, by installing safety valve 7, pressure is released when barometer 6 detects that the pressure exceeds the set value, thus preventing damage to the equipment due to overpressure.

[0040] In one embodiment of this application, such as Figure 2 As shown, a flange ring 26 is installed at the connection between the conveying pipe 21 and the exhaust gas treatment device 1.

[0041] It is understandable that the installation of flange ring 26 enhances the airtightness of the connection between the delivery pipe 21 and the exhaust gas treatment device 1, preventing gas leakage and pollution.

[0042] Working principle: When the exhaust gas treatment device 1 treats the exhaust gas, the oxygen addition mechanism 2 increases the oxygen content in the exhaust gas treatment device 1, making the exhaust gas treatment reaction more complete and enhancing the exhaust gas treatment effect. First, the drive component 24 fixed on the mounting frame 23 is activated. The drive component 24 drives the air intake swivel 25 to transport outside air to the collection chamber 22. Then, the oxygen collected in the collection chamber 22 is transported to the exhaust gas treatment device 1 through the delivery pipe 21, increasing the oxygen content in the exhaust gas treatment device 1 and making the reaction more complete. After the exhaust gas treatment device 1 treats the exhaust gas, the waste heat recovery mechanism 3 realizes the recovery of heat energy, reduces fuel consumption, and achieves energy saving and emission reduction. First, the gas supply unit 32 is started, and part of the gas treated by the exhaust gas treatment device 1 is transported to the heat exchange chamber 34 through the air inlet pipe 31 and the gas supply pipe 33. Then, the gas is heated to a certain temperature in the heat exchange chamber 34 and then transported to the reaction device 4 through the gas outlet pipe 35 to provide heat for the reaction in the reaction device 4, reduce fuel consumption, and achieve energy saving and emission reduction.

[0043] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A sulfuric acid method lithium extraction acidification tail gas treatment device, characterized by, include: The exhaust gas treatment device (1), the reaction device (4), and the oxygenation mechanism (2) are provided. The reaction device (4) is installed outside the exhaust gas treatment device (1). The oxygenation mechanism (2) is located outside the exhaust gas treatment device (1). The oxygenation mechanism (2) includes a conveying pipe (21), a collection chamber (22), a mounting frame (23), a drive component (24), and an air inlet vortex (25). One end of the conveying pipe (21) is connected to the exhaust gas treatment device (1), and the other end of the conveying pipe (21) is connected to the collection chamber (22). The mounting frame (23) is installed on the outer wall of the collection chamber (22). The drive component (24) is installed on the mounting frame (23), and the air inlet vortex (25) is connected to the output end of the drive component (24).

2. A device for treating lithium sulfate acidification tail gas according to claim 1, characterized in that, The exhaust gas treatment device (1) is provided with a waste heat recovery mechanism (3) on its exterior. The waste heat recovery mechanism (3) includes an inlet pipe (31), a gas delivery component (32), a gas delivery pipe (33), a heat exchange chamber (34), and an outlet pipe (35). One end of the inlet pipe (31) is connected to the exhaust gas treatment device (1), and the other end of the inlet pipe (31) is connected to the input end of the gas delivery component (32). One end of the gas delivery pipe (33) is connected to the output end of the gas delivery component (32), and the other end of the gas delivery pipe (33) is connected to the heat exchange chamber (34). One end of the outlet pipe (35) is connected to the heat exchange chamber (34), and the other end of the outlet pipe (35) is connected to the reaction device (4).

3. A device for treating lithium sulfate acidification tail gas according to claim 2, characterized in that, A fixing frame (5) is installed on the outer wall of the gas transmission component (32).

4. A device for treating lithium sulfate acidification tail gas according to claim 2, characterized in that, A barometer (6) is installed on the gas pipeline (33).

5. A device for treating lithium sulfate acidification tail gas according to claim 2, characterized in that, A safety valve (7) is installed on the gas pipeline (33).

6. A device for treating lithium sulfate acidification tail gas according to claim 1, characterized in that, A flange ring (8) is installed at the connection between the conveying pipe (21) and the exhaust gas treatment device (1).

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