A selenium sample digestion tail gas treatment device

Abstract

This utility model discloses a selenium sample digestion exhaust gas treatment device, relating to the field of exhaust gas treatment technology. It includes a digestion tank, a gas-liquid mixing tank fixedly connected to the digestion tank via a gas supply pipe, an absorption tank fixedly connected to the top of the gas-liquid mixing tank via a connecting pipe, and an exhaust pipe fixedly connected to the bottom side of the absorption tank. This utility model, through the coordinated structure of the digestion tank, gas supply pipe, gas-liquid mixing tank, and absorption tank, achieves integrated treatment of the collection, transmission, purification, and emission of selenium sample digestion exhaust gas. The treatment process is continuous and efficient, effectively removing harmful components from the exhaust gas. A flow regulating valve on the gas supply pipe allows for flexible adjustment of the exhaust gas transmission speed according to actual conditions, ensuring that the exhaust gas is fully treated in the gas-liquid mixing tank and the absorption tank. A check valve prevents backflow of the absorption liquid, ensuring stable operation of the equipment and the safety of the sample inside the digestion tank.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, specifically to a selenium sample digestion exhaust gas treatment device. Background Technology

[0002] In fields such as environmental monitoring, food testing, geological sample analysis, and pharmaceutical research and development, selenium samples often need to be digested to determine their selenium content. During the digestion process, harmful exhaust gases such as selenium-containing compounds (e.g., selenium dioxide, hydrogen selenide) and acidic gases (e.g., nitric acid mist) are generated.

[0003] Traditional exhaust gas treatment equipment has many problems, such as incomplete exhaust gas collection, which can easily cause leaks, endangering the health of laboratory personnel and polluting the environment; discontinuous exhaust gas treatment processes, resulting in poor treatment effects and making it difficult to ensure that emissions meet standards; inconvenient replacement of internal filter and adsorption components, affecting the continuous treatment efficiency of the equipment; and lack of effective monitoring devices, making it impossible to understand the equipment's operating status and exhaust gas treatment situation in a timely manner. Utility Model Content

[0004] To address the problems mentioned in the background section, the present invention aims to provide a selenium sample digestion tail gas treatment device. By incorporating a digestion tank, a gas delivery pipe, and its associated flow regulating valve, check valve, and corrosion-resistant diaphragm pump, the device achieves effective collection and stable transmission of tail gas, preventing leakage. The combination of a gas-liquid mixing tank and an absorption tank enables multi-stage purification of the tail gas, improving treatment efficiency. The stacking and locking structure of the venting stacking tray facilitates filter material replacement. The inclusion of various sensors enables real-time monitoring of the device's operating status and tail gas treatment effect, thus solving the aforementioned problems of traditional equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a selenium sample digestion tail gas treatment device, including a digestion tank, wherein the digestion tank is fixedly connected to a gas-liquid mixing tank through a gas supply pipe, and an absorption tank is fixedly connected to the top of the gas-liquid mixing tank through a connecting pipe;

[0006] An exhaust pipe is fixedly connected to the side of the absorption tank near the bottom.

[0007] Multiple sets of ventilated stacking discs are movably inserted into the inner wall of the absorption tank, and the multiple sets of ventilated stacking discs are stacked and fixed by a stacking locking component.

[0008] As a preferred embodiment of this utility model, the stacking locking assembly includes a connecting vertical rod, the top end of which extends movably through to the top end of the ventilated stacking tray, and the top end of the connecting vertical rod is detachably and fixedly connected to a lifting handle by a nut.

[0009] As a preferred embodiment of this invention, the inner wall of the ventilated stacking disc is filled with activated carbon particles.

[0010] As a preferred embodiment of this invention, the outer wall of the air supply pipe is fixedly connected with a flow regulating valve, a check valve, and a corrosion-resistant diaphragm pump.

[0011] As a preferred embodiment of this invention, a liquid level sensor and an inlet pipe are fixedly connected to the top of the gas-liquid mixing tank, and a waste liquid discharge pipe is fixedly connected to the outer wall of the gas-liquid mixing tank near the bottom.

[0012] As a preferred embodiment of this utility model, the top of the absorption tank is detachably and fixedly connected to a cover via a flange, a pressure sensor is fixedly connected to the outer wall of the cover, and a pressure sensor is fixedly connected to the outer wall of the absorption tank near the bottom.

[0013] As a preferred embodiment of this invention, an optical sensor is fixedly connected to the outer wall of the exhaust pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model achieves integrated treatment of the collection, transmission, purification and emission of selenium sample digestion tail gas through the combination of digestion tank, gas delivery pipe, gas-liquid mixing tank and absorption tank. The treatment process is continuous and efficient, and can effectively remove harmful components in the tail gas.

[0016] 2. This utility model allows for flexible adjustment of the exhaust gas transmission speed according to actual conditions via a flow regulating valve installed on the gas delivery pipe, ensuring that the exhaust gas is fully treated in the gas-liquid mixing tank and absorption tank; the check valve prevents backflow of the absorption liquid, ensuring stable operation of the equipment and the safety of the samples in the digestion tank.

[0017] 3. This utility model uses a liquid level sensor equipped with a gas-liquid mixing tank to monitor the liquid level of the absorbent in real time, which facilitates timely replenishment and ensures the initial treatment effect; the setting of the liquid inlet pipe and waste liquid outlet pipe facilitates the replacement of the absorbent liquid and the treatment of waste liquid.

[0018] 4. This utility model uses multiple sets of ventilated stacked discs inside the absorption tank, fixed by a stacking locking assembly, which facilitates installation and disassembly. When it is necessary to replace the activated carbon granules, the cap is removed from the absorption tank, the ventilated stacked discs are taken out of the absorption tank by pulling the handle, and then the pull handle and connecting vertical rod are separated. This allows for the separation of the stacked ventilated stacked discs and replacement of the activated carbon granules. The operation is convenient and helps to ensure the filtration and adsorption effect.

[0019] 5. This utility model can monitor pressure changes inside the absorption tank through pressure sensor one and pressure sensor two, and promptly detect equipment abnormalities; the optical sensor monitors the discharged gas to ensure that the discharged gas meets the standards, thereby improving the safety and reliability of equipment operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the absorption tank structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the ventilated stacking disk structure of this utility model.

[0024] In the diagram: 1. Digestion tank; 3. Gas supply pipe; 4. Flow regulating valve; 5. Check valve; 6. Corrosion-resistant diaphragm pump; 7. Gas-liquid mixing tank; 8. Liquid level sensor; 9. Connecting pipe; 10. Absorption tank; 11. Pressure sensor one; 12. Pressure sensor two; 13. Exhaust pipe; 14. Optical sensor; 15. Liquid inlet pipe; 16. Waste liquid discharge pipe; 17. Cover; 18. Ventilation stacking tray; 19. Connecting vertical rod; 20. Lifting handle; 21. Activated carbon granules; 22. Flange. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0028] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0029] Example 1

[0030] Reference Figure 1-4 This is the first embodiment of the present invention, which provides a selenium sample digestion tail gas treatment device, including a digestion tank 1, a gas-liquid mixing tank 7 fixedly connected to the digestion tank 1 through a gas supply pipe 3, and an absorption tank 10 fixedly connected to the top of the gas-liquid mixing tank 7 through a connecting pipe 9.

[0031] An exhaust pipe 13 is fixedly connected to one side of the absorption tank 10 near the bottom.

[0032] Multiple sets of ventilated stacking discs 18 are movably inserted into the inner wall of the absorption tank 10, and the multiple sets of ventilated stacking discs 18 are stacked and fixed by a stacking locking component.

[0033] Specifically, through the combination of structures such as digestion tank 1, gas supply pipe 3, gas-liquid mixing tank 7, and absorption tank 10, the collection, transmission, purification, and emission of selenium sample digestion exhaust gas are integrated, and the processing flow is continuous and efficient, effectively removing harmful components from the exhaust gas.

[0034] Example 2

[0035] The second embodiment of this utility model provides a technical solution: the stacking locking assembly includes a connecting vertical rod 19, the top end of the connecting vertical rod 19 extends movably through to the top end of the ventilated stacking tray 18, and the top end of the connecting vertical rod 19 is detachably and fixedly connected to a lifting handle 20 by a nut.

[0036] The inner wall of the ventilated stacking tray 18 is filled with activated carbon particles 21.

[0037] The outer wall of the air supply pipe 3 is fixedly connected to a flow regulating valve 4, a check valve 5, and a corrosion-resistant diaphragm pump 6.

[0038] A liquid level sensor 8 and an inlet pipe 15 are fixedly connected to the top of the gas-liquid mixing tank 7, and a waste liquid discharge pipe 16 is fixedly connected to the outer wall near the bottom of the gas-liquid mixing tank 7.

[0039] Specifically, multiple sets of ventilated stacked discs 18 within the absorption tank 10 are secured by a stacking locking assembly, facilitating installation and disassembly. When it is necessary to replace the activated carbon granules 21, the cap 17 is removed from the absorption tank 10, the ventilated stacked discs 18 are removed from the absorption tank 10 using the lifting handle 20, and then the lifting handle 20 is separated from the connecting vertical rod 19. This allows for the separation of the stacked ventilated stacked discs 18 and the replacement of the activated carbon granules 21. The operation is convenient and helps ensure the filtration and adsorption effect.

[0040] Example 3

[0041] The third embodiment of this utility model provides a technical solution: the top of the absorption tank 10 is detachably and fixedly connected to a cover 17 via a flange 22, a pressure sensor 11 is fixedly connected to the outer wall of the cover 17, and a pressure sensor 22 is fixedly connected to the outer wall of the absorption tank 10 near the bottom.

[0042] An optical sensor 14 is fixedly connected to the outer wall of the exhaust pipe 13.

[0043] Specifically, pressure changes inside the absorption tank 10 can be monitored by pressure sensor 11 and pressure sensor 12, allowing for timely detection of equipment abnormalities; optical sensor 14 monitors the discharged gas to ensure that the discharged gas meets the standards, thereby improving the safety and reliability of equipment operation.

[0044] Example 4

[0045] The fourth embodiment of this utility model provides a technical solution: the components of the digestion tank 1, the gas supply pipe 3, the gas-liquid mixing tank 7, and the absorption tank 10 that come into contact with the exhaust gas and the absorption liquid can be made of corrosion-resistant materials, such as polytetrafluoroethylene or polypropylene; the connecting vertical rod 19 and the lifting handle 20 can be made of stainless steel to ensure the service life and stability of the equipment.

[0046] The connection between the gas supply pipe 3 and the digestion tank 1 and the gas-liquid mixing tank 7, and the connection between the connecting pipe 9 and the gas-liquid mixing tank 7 and the absorption tank 10, are all equipped with sealing rings to prevent exhaust gas leakage.

[0047] The ventilated stacking tray 18 is provided with multiple vent holes to ensure that the gas can pass through smoothly and make full contact with the activated carbon particles 21.

[0048] Connect the flow regulating valve 4, corrosion-resistant diaphragm pump 6, liquid level sensor 8, pressure sensor 11, pressure sensor 2, and optical sensor 14 to the PLC control system to achieve automated control and monitoring.

[0049] Working principle:

[0050] The exhaust gas generated during the digestion reaction of the selenium sample in digestion tank 1 is transported to gas-liquid mixing tank 7 through gas supply pipe 3. The corrosion-resistant diaphragm pump 6 on the outer wall of gas supply pipe 3 provides power, the flow regulating valve 4 controls the exhaust gas transmission speed, and the check valve 5 prevents the absorbed liquid in gas-liquid mixing tank 7 from flowing back into digestion tank 1.

[0051] The gas-liquid mixing tank 7 is filled with the corresponding absorbent liquid. After the exhaust gas enters, it comes into full contact with the absorbent liquid for preliminary chemical absorption treatment. The liquid level sensor 8 monitors the liquid level of the absorbent liquid. The inlet pipe 15 is used to replenish the absorbent liquid, and the waste liquid discharge pipe 16 can discharge the waste liquid after use.

[0052] The gas, after being processed by the gas-liquid mixing tank 7, enters the absorption tank 10 through the connecting pipe 9. Multiple sets of ventilated stacked discs 18 are movably inserted into the inner wall of the absorption tank 10, and the activated carbon particles 21 filling the inner wall further filter and adsorb the gas. The multiple sets of ventilated stacked discs 18 are stacked and fixed by a stacking locking assembly. The top of the connecting vertical rod 19 of the stacking locking assembly extends movably to the top of the ventilated stacked disc 18, and a lifting handle 20 is detachably connected to the top of the handle via a nut.

[0053] The top of the absorption tank 10 is detachably connected to the cover 17 via the flange 22. The pressure sensor 11 on the outer wall of the cover 17 and the pressure sensor 12 on the outer wall near the bottom of the absorption tank 10 are used to monitor the pressure at different locations inside the absorption tank 10.

[0054] After treatment, the gas is discharged through the exhaust pipe 13 near the bottom of the absorption tank 10, and the optical sensor 14 on the outer wall of the exhaust pipe 13 monitors the discharged gas.

[0055] In summary, through the coordinated structure of digestion tank 1, gas delivery pipe 3, gas-liquid mixing tank 7, and absorption tank 10, the integrated treatment of collection, transmission, purification, and emission of selenium sample digestion exhaust gas is achieved. The treatment process is coherent and efficient, and can effectively remove harmful components from the exhaust gas.

[0056] The liquid level sensor, pressure sensor one, pressure sensor two, and optical sensor used in this application can be additionally equipped with protective measures that are common knowledge in the field of this technology under different usage environments. These measures include, but are not limited to, the following: protective covers for equipment protection, dustproof nets for equipment dust protection, and sealing components or waterproof coatings for equipment waterproofing. These are common technical means used by those skilled in the art.

[0057] It should be noted that the liquid level sensor, pressure sensor one, pressure sensor two, and optical sensor are existing devices or equipment, or devices or equipment that can be implemented with existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the devices, as well as the materials of each accessory and the selection of various parameters, are all common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0058] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0059] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0060] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A selenium sample digestion tail gas treatment device, characterized in that: It includes a digestion tank (1), which is fixedly connected to a gas-liquid mixing tank (7) via a gas supply pipe (3), and the top of the gas-liquid mixing tank (7) is fixedly connected to an absorption tank (10) via a connecting pipe (9). An exhaust pipe (13) is fixedly connected to the side of the absorption tank (10) near the bottom. The inner wall of the absorption tank (10) is movably connected to multiple sets of ventilation stacking discs (18), and the multiple sets of ventilation stacking discs (18) are stacked and fixed by a stacking locking component.

2. The selenium sample digestion tail gas treatment device according to claim 1, characterized in that: The stacking locking assembly includes a connecting rod (19), the top end of which extends movably through to the top end of the ventilated stacking tray (18), and the top end of the connecting rod (19) is detachably fixedly connected to a lifting handle (20) by a nut.

3. The selenium sample digestion tail gas treatment device according to claim 1, characterized in that: The inner wall of the ventilated stacking plate (18) is filled with activated carbon particles (21).

4. The selenium sample digestion tail gas treatment device according to claim 1, characterized in that: The outer wall of the air supply pipe (3) is fixedly connected to a flow regulating valve (4), a check valve (5), and a corrosion-resistant diaphragm pump (6).

5. The selenium sample digestion tail gas treatment device according to claim 1, characterized in that: A liquid level sensor (8) and an inlet pipe (15) are fixedly connected to the top of the gas-liquid mixing tank (7), and a waste liquid discharge pipe (16) is fixedly connected to the outer wall near the bottom of the gas-liquid mixing tank (7).

6. The selenium sample digestion tail gas treatment device according to claim 1, characterized in that: The top of the absorption tank (10) is detachably and fixedly connected to a cover (17) via a flange (22). A pressure sensor (11) is fixedly connected to the outer wall of the cover (17), and a pressure sensor (12) is fixedly connected to the outer wall of the absorption tank (10) near the bottom.

7. The selenium sample digestion tail gas treatment device according to claim 1, characterized in that: An optical sensor (14) is fixedly connected to the outer wall of the exhaust pipe (13).

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