A gradient-pore natural gas mercury adsorption device
By using gradient pore size filter tubes and quick-connect structure design, the problems of low adsorption efficiency and complex maintenance of existing natural gas mercury removal devices are solved, achieving efficient mercury removal and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINYANG SHANGTIANTI YUTAI GAS CO LTD
- Filing Date
- 2025-09-04
- Publication Date
- 2026-07-21
AI Technical Summary
Existing natural gas mercury removal devices have a simple adsorption structure, making it difficult to efficiently remove mercury particles and mercury compounds of different sizes. Furthermore, the devices are complex to maintain and have poor sealing, resulting in low mercury removal efficiency and high maintenance costs.
The filter tubes feature a gradient aperture design, including large, medium, and small aperture screens. Natural gas is evenly sprayed through a gas distributor. Combined with quick-connect hinges, bolts, and nuts, the gradient aperture design enables adsorption and convenient maintenance, preventing short-circuit leaks.
It achieves efficient removal of mercury from natural gas, improves the ease of maintenance and operational stability of the unit, and reduces maintenance time and costs.
Smart Images
Figure CN224530879U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of natural gas purification technology, and in particular to a natural gas mercury adsorption device with gradient pore size. Background Technology
[0002] Natural gas, as an important energy source and chemical raw material, is widely used in industrial production and daily life. However, natural gas typically contains a certain amount of mercury and mercury compounds, which, if not removed, can cause various hazards. Mercury is highly corrosive, causing severe corrosion to metal components in natural gas pipelines, storage equipment, and downstream processing units, shortening equipment lifespan, increasing maintenance costs, and creating safety risks. Furthermore, mercury and its compounds are highly toxic substances; if released into the environment during natural gas combustion or processing, they pose a significant threat to the ecological environment and human health. Therefore, mercury removal from natural gas is a crucial step in the natural gas purification process. Currently, the adsorption method is commonly used in natural gas mercury removal technology. Mercury is removed by adsorption through adsorbents or sieve structures. However, existing adsorption devices have many shortcomings. Some devices have a simple adsorption structure, using only adsorbent materials with a single pore size, which makes it difficult to efficiently and comprehensively adsorb mercury particles and mercury compounds of different sizes, resulting in low mercury removal efficiency. The internal components of some devices are complicated to install and disassemble. When the adsorbent material needs to be cleaned, replaced, or maintained, the device needs to be disassembled on a large scale, which is cumbersome and time-consuming, seriously affecting the continuous operation of the device and increasing maintenance costs. In addition, some devices have poor sealing, and natural gas is prone to short-circuit leakage inside the device, causing some natural gas that has not been fully adsorbed to be discharged directly, reducing the mercury removal effect. To address the aforementioned issues, this invention provides a gradient pore size natural gas mercury adsorption device. Through a rational structural design, it achieves efficient removal of mercury from natural gas while simultaneously improving the device's maintenance convenience and operational stability. Utility Model Content
[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a gradient pore size natural gas mercury adsorption device that can solve the above-mentioned problems.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a gradient aperture natural gas mercury adsorption device, comprising an inlet pipe and an adsorption tower body, characterized in that: the inlet pipe is fixedly connected to the upper part of the adsorption tower body, an exhaust pipe is fixedly connected to the lower part of the adsorption tower body, and a support frame is fixedly connected to the lower part of the adsorption tower body. A gas distributor is provided at the top inside the adsorption tower body, and the gas inlet pipe is fixedly connected to the gas distributor; a hinge is fixedly connected to one side of the adsorption tower body, and a tower door is rotatably connected to the hinge; when the adsorption tower body and the tower door are closed, they form a complete cylindrical shape. The adsorption tower body and the tower door closure are both fixedly connected with fixing lugs, and bolts are threaded into the fixing lugs, and nuts are threaded onto the bolts. The adsorption tower body is equipped with three filter tubes. Several large-aperture sieves, medium-aperture sieves and small-aperture sieves are fixedly connected in the three filter tubes respectively. An installation ring is fixedly connected to the outside of each filter tube, and a sealing ring is fixedly connected to the bottom of each filter tube. Both the adsorption tower body and the inner wall of the tower door are provided with sliding grooves.
[0005] Preferably, the gas distributor array is provided with holes.
[0006] Preferably, the mounting ring and the filter tube are integrally formed.
[0007] Preferably, the depth and width of the groove are adapted to the thickness of the mounting ring.
[0008] Preferably, the inner walls of both the intake pipe and the exhaust pipe are provided with an anti-corrosion layer.
[0009] Preferably, the filter tube has a cylindrical structure.
[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) When the natural gas needs to be treated for mercury removal, the natural gas to be treated reaches the gas distributor after passing through the inlet pipe. Under the action of the gas distributor, the natural gas will be evenly sprayed inside the adsorption tower. Since the inlet pipe is fixedly connected to the top of the gas distributor, the natural gas will flow from top to bottom through the filter components inside the tower. The three filter tubes set inside the adsorption tower form a gradient pore adsorption structure. They are installed in a precise position by the cooperation of the mounting ring and the sliding groove from top to bottom. The adjacent filter tubes are tightly fitted by the sealing ring to ensure that the natural gas can only pass through the screen structure inside the filter tube, avoiding short circuit leakage.
[0011] (2) The natural gas mercury adsorption device with gradient aperture has the adsorption tower body and tower door connected by hinges. With the help of fixing ears, bolts and nuts, it can be quickly closed and fixed. The internal components can be operated by opening the tower door. The filter tube is slidably installed by the fit of the mounting ring and the sliding groove. The sealing ring between adjacent filter tubes ensures the sealing performance. At the same time, it is also convenient to pull out any filter tube for cleaning, replacement or maintenance. This design does not require large-scale disassembly of the entire device, which significantly shortens the maintenance time. Attached Figure Description
[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of a gradient pore size natural gas mercury adsorption device according to the present invention. Figure 2 This is a schematic diagram of a gradient pore size natural gas mercury adsorption device according to the present invention. Figure 3 This is a cross-sectional schematic diagram of a gradient aperture natural gas mercury adsorption device according to the present invention. Figure 4 This invention relates to an explosion-proof device for adsorbing mercury in natural gas with a gradient aperture.
[0013] Reference numerals in the attached diagram: 1. Inlet pipe; 2. Adsorption tower body; 3. Tower door; 4. Hinge; 5. Fixing lug; 6. Bolt; 7. Nut; 8. Support frame; 9. Exhaust pipe; 10. Gas distributor; 11. Large-aperture sieve; 12. Medium-aperture sieve; 13. Small-aperture sieve; 14. Filter tube; 15. Sealing ring; 16. Mounting ring; 17. Slide groove; 18. Vibration generator. Detailed Implementation
[0014] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0015] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0016] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.
[0017] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0018] Please see Figure 1-4 This utility model provides a technical solution: a gradient aperture natural gas mercury adsorption device, including an inlet pipe 1 and an adsorption tower body 2. The inlet pipe 1 is fixedly connected to the upper part of the adsorption tower body 2, and an exhaust pipe 9 is fixedly connected to the lower part of the adsorption tower body 2. A support frame 8 is fixedly connected to the lower part of the adsorption tower body 2, and a visual observation window is provided on the adsorption tower body 2. A gas distributor 10 is installed at the top inside the adsorption tower body 2. The inlet pipe 1 is fixedly connected to the gas distributor 10. A vibration generator 18 is fixedly connected to the adsorption tower body 2. When natural gas needs to be treated for mercury removal, the natural gas to be treated reaches the gas distributor 10 after passing through the inlet pipe 1. Under the action of the gas distributor 10, the natural gas will be evenly sprayed inside the adsorption tower body 2. Since the inlet pipe 1 is fixedly connected to the top of the gas distributor 10, the natural gas will flow from top to bottom through the filter components inside the tower. A hinge 4 is fixedly connected to one side of the adsorption tower body 2, and a tower door 3 is rotatably connected to the hinge 4. When the adsorption tower body 2 and the tower door 3 are closed, they form a complete cylindrical shape. The adsorption tower body 2 and the tower door 3 are both fixedly connected with fixing lugs 5. Bolts 6 are threaded into the fixing lugs 5, and nuts 7 are threaded onto the bolts 6. The adsorption tower body 2 and the tower door 3 are closed by rotating the hinge 4, and then tightly fixed by the cooperation of the fixing lug 5, bolt 6 and nut 7, forming a closed adsorption space to ensure the stable flow path of natural gas in the tower. The adsorption tower body 2 is equipped with three filter tubes 14. Several large-aperture sieves 11, medium-aperture sieves 12 and small-aperture sieves 13 are fixedly connected to the three filter tubes 14 respectively. An installation ring 16 is fixedly connected to the outside of the filter tubes 14. A sealing ring 15 is fixedly connected to the bottom of each filter tube 14. During installation, the sealing ring 15 under the upper filter tube 14 fits against the upper part of the lower filter tube 14 to achieve a sealing effect. Both the inner walls of the adsorption tower body 2 and the tower door 3 are provided with sliding grooves 17 that fit the mounting ring 16; The three filter tubes 14 inside the adsorption tower body 2 form a gradient pore size adsorption structure. They are installed in a precise position by the cooperation of the mounting ring 16 and the slide groove 17 from top to bottom. The adjacent filter tubes 14 are tightly fitted by the sealing ring 15 to ensure that natural gas can only pass through the screen structure inside the filter tube 14, thus avoiding short circuit leakage. Working principle: When natural gas needs to be treated for mercury removal, the natural gas to be treated reaches the gas distributor 10 after passing through the inlet pipe 1. Under the action of the gas distributor 10, the natural gas will be evenly sprayed inside the adsorption tower body 2. Since the inlet pipe 1 is fixedly connected to the top of the gas distributor 10, the natural gas will flow from top to bottom through the filter components inside the tower. The adsorption tower body 2 contains three filter tubes 14 forming a gradient pore size adsorption structure. These tubes are precisely positioned and installed from top to bottom via the cooperation of mounting rings 16 and sliding grooves 17. Adjacent filter tubes 14 are tightly fitted together by sealing rings 15, ensuring that natural gas can only pass through the screen structure inside the filter tubes 14, preventing short-circuit leaks. A vibration generator 18 can drive the entire structure to vibrate, allowing the activated carbon molecular sieve to better contact the gas. Several large-pore screens 11 are fixedly connected inside the uppermost filter tube 14; their pore size design is targeted at larger particles such as mercury or other contaminants in the natural gas. Mercury-containing impurities, such as mercury compound agglomerates, are first intercepted and adsorbed. At the same time, smaller mercury molecules and natural gas components are allowed to pass through the medium-pore size sieve 12 in the middle filter tube 14, which can further adsorb medium-sized mercury particles and capture mercury components that were not intercepted in the early stage. The small-pore size sieve 13 in the bottom filter tube 14 is used for the deep adsorption of small-sized elemental mercury molecules and residual trace mercury compounds through its fine pore structure, forming a gradient adsorption process of "large pore size pre-interception - medium pore size fine screening - small pore size deep purification".
[0019] Throughout the adsorption process, the adsorption tower body 2 and the tower door 3 are closed by rotating the hinge 4, and then tightly fixed by the cooperation of the fixing lug 5, bolt 6 and nut 7, forming a closed adsorption space. This ensures the stable flow path of natural gas in the tower and ensures full contact with each screen. The filter tube 14 is quickly disassembled and assembled by the sliding cooperation of the mounting ring 16 and the slide groove 17. At the same time, the sealing ring 15 prevents natural gas from leaking through the gaps between the filter tubes 14, ensuring that all natural gas passes through the gradient aperture screen layer by layer. After gradient adsorption treatment, mercury and related impurities in the natural gas are efficiently retained. The purified natural gas is finally discharged through the exhaust pipe 9 fixedly connected to the bottom of the adsorption tower 2, thus completing the mercury removal process. In addition, when the filter components need to be maintained or replaced, the tower door 3 can be opened by removing the bolts 6 and nuts 7, and the filter tube 14 can be pulled out along the slide 17 to easily complete the screen cleaning or the overall replacement of the filter tube 14, ensuring the continuous and stable gradient adsorption efficiency of the device. The adsorption tower body 2 and the tower door 3 are connected by hinges 4, and quick closing and fixing are achieved with fixing ears 5, bolts 6 and nuts 7. The internal components can be operated by opening the tower door 3. The filter tube 14 is slidably installed by the engagement of the mounting ring 16 and the slide groove 17. The sealing ring 15 between adjacent filter tubes 14 ensures the sealing performance, and also makes it easy to pull out any filter tube 14 for cleaning, replacement or maintenance. This design does not require large-scale disassembly of the entire device, which significantly shortens the maintenance time, reduces the maintenance difficulty and cost, effectively reduces downtime caused by maintenance, and improves the continuous operation efficiency of the device. The device incorporates sealing designs in several key areas. The sealing ring 15 below the filter pipe 14 fits snugly against the top of the lower filter pipe 14 during installation, ensuring that natural gas can only pass through the screen structure, preventing short-circuit leaks, and ensuring that all natural gas can be processed layer by layer through the gradient aperture screen. At the same time, the tower body and tower door 3 are tightly connected by bolts 6, nuts 7 and fixing lugs 5, forming a closed adsorption space, which further ensures the sealing performance of the device during operation, allowing natural gas to fully contact the adsorption material in a stable path, and ensuring the stability and reliability of the mercury removal effect.
[0020] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A gradient pore size natural gas mercury adsorption device, comprising an inlet pipe (1) and an adsorption tower body (2), characterized in that: The air inlet pipe (1) is fixedly connected to the upper part of the adsorption tower body (2), the lower part of the adsorption tower body (2) is fixedly connected to the exhaust pipe (9), and the lower part of the adsorption tower body (2) is fixedly connected to the support frame (8). A gas distributor (10) is provided above the interior of the adsorption tower body (2), and the inlet pipe (1) is fixedly connected to the gas distributor (10); A hinge (4) is fixedly connected to one side of the adsorption tower body (2), and a tower door (3) is rotatably connected to the hinge (4). When the adsorption tower body (2) and the tower door (3) are closed, they form a complete cylindrical shape. The adsorption tower body (2) and the tower door (3) are both fixedly connected with fixing lugs (5), and bolts (6) are threaded in the fixing lugs (5), and nuts (7) are threaded on the bolts (6). The adsorption tower body (2) is provided with three filter tubes (14). Several large-aperture sieves (11), medium-aperture sieves (12) and small-aperture sieves (13) are fixedly connected in the three filter tubes (14). An installation ring (16) is fixedly connected to the outside of the filter tubes (14). A sealing ring (15) is fixedly connected to the bottom of each filter tube (14). The inner walls of both the adsorption tower body (2) and the tower door (3) are provided with sliding grooves (17).
2. The gradient pore size natural gas mercury adsorption device according to claim 1, characterized in that: The gas distributor (10) array is provided with holes.
3. The gradient pore size natural gas mercury adsorption device according to claim 2, characterized in that: The mounting ring (16) and the filter tube (14) are integrally formed.
4. The gradient pore size natural gas mercury adsorption device according to claim 3, characterized in that: The depth and width of the groove (17) are adapted to the thickness of the mounting ring (16).
5. A gradient pore size natural gas mercury adsorption device according to claim 4, characterized in that: The inner walls of both the intake pipe (1) and the exhaust pipe (9) are provided with anti-corrosion layers.
6. A gradient pore size natural gas mercury adsorption device according to claim 5, characterized in that: A visual observation window is provided on the adsorption tower body (2).