Desulfurization pre-purification equipment for natural gas

Abstract

The utility model relates to the technical field of natural gas treatment, in particular to desulfurization pre-purification equipment for natural gas, and solves the problem that in the prior art, when the existing desulfurization pre-purification equipment treats desulfurized gas, the gas and liquid are difficult to effectively separate after being mixed, so that the dryness of the gas cannot be kept. Desulfurization pre-purification equipment for natural gas comprises a dust removal stirring barrel, a desulfurization tower, a sedimentation treatment barrel and a cleaning module, a partition plate and a lifting plate are arranged in the sedimentation treatment barrel, a through hole is formed in the top of the partition plate, a plugging rod matched with the through hole is connected to the top of the lifting plate, a push-pull mechanism is arranged at the top of the sedimentation treatment barrel, and the output end of the push-pull mechanism is connected with the plugging rod. The push-pull mechanism is used for controlling the plugging rod to move up and down, controllable opening and closing of the through hole are achieved, desulfurized gas and liquid are effectively separated, the dryness of the gas is kept, and the pre-purification efficiency and quality of natural gas are improved.

Description

Technical Field

[0001] This utility model relates to the field of natural gas processing technology, and in particular to a desulfurization and pre-purification device for natural gas. Background Technology

[0002] Natural gas, a recognized clean, efficient, and high-quality energy source, is primarily composed of methane and is widely used in industrial and residential sectors such as chemical, power, and city gas applications. However, natural gas often contains small amounts of hydrogen sulfide gas, a corrosive and toxic component. Hydrogen sulfide reacts with water to form a weak acid, which corrodes steel equipment and pipelines, shortening their lifespan. Furthermore, sulfides in the exhaust gases produced after natural gas combustion pollute the environment and pose a threat to human health. Therefore, desulfurization treatment is particularly important in the utilization of natural gas.

[0003] In the field of natural gas desulfurization and pre-purification, desulfurized gas typically needs to enter a settling tank for further processing via a cleaning structure. However, existing desulfurization and pre-purification equipment often struggles to effectively separate the gas from the liquid after it has been mixed, resulting in a failure to maintain the gas's dryness. This issue not only affects the subsequent processing and use of natural gas but may also pose additional corrosion risks to equipment and pipelines, thereby increasing maintenance costs and safety hazards.

[0004] More seriously, the inability to separate the gas and liquid mixture can result in residual liquid components in the processed natural gas, affecting its purity and quality. This not only reduces the usability of the natural gas but may also negatively impact the end-user experience. Furthermore, existing desulfurization and pre-purification equipment suffers from numerous shortcomings in processing efficiency, ease of operation, and stability, making it difficult to meet the high-efficiency and stable production demands of the modern natural gas processing industry.

[0005] Therefore, to address the shortcomings of existing technologies, we urgently need a natural gas desulfurization and pre-purification device to solve this problem. This device should effectively separate gas and liquid, maintain the dryness of the gas, and improve the purity and quality of the natural gas. Utility Model Content

[0006] The purpose of this invention is to provide a desulfurization pre-purification device for natural gas, which solves the problem that existing desulfurization pre-purification devices are difficult to effectively separate gas and liquid after desulfurization, resulting in the inability to maintain the dryness of the gas.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A natural gas desulfurization pre-purification device includes a dust removal mixing drum, a desulfurization tower, a settling treatment drum, and a cleaning module;

[0009] A partition plate is provided at the center of the interior of the settling treatment cylinder, and a lifting plate is provided at the bottom of the partition plate;

[0010] The top of the partition plate has several through holes, and the top of the lifting plate is fixedly connected with several sealing rods that are adapted to the through holes. The top of the settling treatment cylinder is provided with a push-pull mechanism, and the output end of the push-pull mechanism slides through the top of the settling treatment cylinder and connects to the top of one of the sealing rods.

[0011] The diameter of the partition plate is the same as the inner diameter of the sedimentation treatment cylinder, and the partition plate is bolted to the inner wall of the sedimentation treatment cylinder. A cleaning module is installed on one side of the sedimentation treatment cylinder.

[0012] The lifting plate is smaller than the partition plate, and the length of the sealing rod is greater than the depth of the through hole.

[0013] The push-pull mechanism includes a lifting cylinder connected to the top of the settling treatment cylinder, and the output end of the lifting cylinder slides through the top of the settling treatment cylinder and connects to the end of the sealing rod.

[0014] Each of the sealing rods is conical in shape, and the diameter of the sealing rod at the end closest to the lifting plate is larger than the diameter at the other end.

[0015] The diameter of the output end of the lifting cylinder is smaller than the diameter of the through hole. An exhaust pipe is connected to the top of one side of the settling treatment cylinder. A circulation module is provided on one side of the desulfurization tower. The input end of the circulation module is connected to the bottom of the settling treatment cylinder, and the output end is connected to the spray system inside the desulfurization tower.

[0016] This utility model has at least the following beneficial effects:

[0017] This invention utilizes a sealing rod to achieve controllable switching of the through-hole, effectively improving the efficiency and control precision of gas-liquid separation while ensuring the dryness of the gas. The introduction of a lifting cylinder makes operation more automated and convenient, while the conical sealing rod design enhances sealing and smoothness. Simultaneously, the circulation module enables liquid recycling, reducing waste liquid discharge and improving resource utilization. The overall equipment has a compact structure, reliable operation, and effectively solves the problems of gas-liquid separation and resource utilization in the natural gas desulfurization pre-purification process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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 based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the sedimentation treatment cylinder and circulation module of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the drain cylinder and exhaust cylinder of this utility model;

[0022] Figure 4 This is a schematic diagram of the lifting plate and partition plate structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the sealing rod and through hole structure of this utility model.

[0024] In the diagram: 1. Dust removal mixing drum; 2. Desulfurization tower; 3. Settling treatment drum; 4. Cleaning module; 5. Circulation module; 6. Drainage cavity; 7. Exhaust cavity; 8. Lifting cylinder; 9. Exhaust pipe; 10. Divider plate; 11. Lifting plate; 12. Sealing rod; 13. Through hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] Example 1

[0027] Please see Figure 1-5 As shown, a natural gas desulfurization pre-purification device according to this embodiment includes a dust removal mixing drum 1, a desulfurization tower 2, a settling treatment drum 3, and a cleaning module 4;

[0028] A partition plate 10 is provided at the center of the sedimentation treatment cylinder 3. The partition plate 10 divides the sedimentation treatment cylinder 3 into an exhaust cavity 7 at the top and a drainage cavity 6 at the bottom. A lifting plate 11 is provided at the bottom of the partition plate 10.

[0029] The top of the partition plate 10 has several through holes 13. The top of the lifting plate 11 is fixedly connected with several sealing rods 12 that are adapted to the through holes 13. The top of the settling treatment cylinder 3 is provided with a push-pull mechanism. The output end of the push-pull mechanism slides through the top of the settling treatment cylinder 3 and connects to the top of one of the sealing rods 12.

[0030] In the operation of the natural gas desulfurization pre-purification equipment, the desulfurized natural gas first enters the interior of the settling tank 3. At this time, the partition plate 10 inside the settling tank 3 divides the tank into upper and lower parts, while the lifting plate 11 is located below the partition plate 10. Several sealing rods 12, which are adapted to the through holes 13 at the top of the partition plate 10, are fixedly connected to the top of the lifting plate 11. In the initial state, the sealing rods 12 are inserted into the through holes 13, sealing them and preventing gas and liquid from passing directly through.

[0031] Subsequently, when gas-liquid separation is required, the push-pull mechanism is activated. The output end of the push-pull mechanism slides through the top of the settling treatment cylinder 3 and connects to the top of one of the sealing rods 12. Driven by the push-pull mechanism, the lifting plate 11 begins to descend, simultaneously moving the sealing rod 12 downwards, causing the sealing rod 12 to separate from the through hole 13, thereby opening the passage of the through hole 13.

[0032] At this point, the liquid portion of the desulfurized natural gas begins to sink due to gravity, while the gaseous portion rises due to buoyancy. The natural gas is discharged from the top of the settling tank 3 to enter subsequent processing steps or be used directly; while the liquid is discharged from the bottom of the settling tank 3 for collection or further processing.

[0033] Example 2

[0034] Please see Figure 1-5 As shown in this embodiment, a natural gas desulfurization pre-purification device has a partition plate 10 with the same diameter as the inner diameter of the settling cylinder 3. The partition plate 10 is bolted to the inner wall of the settling cylinder 3. A cleaning module 4 is installed on one side of the settling cylinder 3. Specifically, during installation, the partition plate 10 is precisely placed inside the settling cylinder 3 and bolted to the inner wall of the settling cylinder 3. In this way, the partition plate 10 stably divides the settling cylinder 3 into upper and lower parts, providing a stable structural foundation for subsequent gas-liquid separation. This arrangement ensures the stability and sealing of the partition plate 10 within the settling cylinder 3, preventing gas and liquid leakage at the partition plate 10 and improving the efficiency and reliability of gas-liquid separation.

[0035] The push-pull mechanism includes a lifting cylinder 8 connected to the top of the settling cylinder 3. The output end of the lifting cylinder 8 slides through the top of the settling cylinder 3 and connects to the end of the sealing rod 12. Specifically, when it is necessary to open or close the through hole 13, the lifting cylinder 8 is activated, and its output end drives the sealing rod 12 to move up and down, thereby opening or closing the through hole 13. The introduction of the lifting cylinder 8 provides a stable and controllable power source for the movement of the sealing rod 12, making the opening and closing of the through hole 13 faster and more accurate, and improving the automation level and ease of operation of the equipment.

[0036] The diameter of the output end of the lifting cylinder 8 is smaller than the diameter of the through hole 13. An exhaust pipe 9 is connected to the top of one side of the settling tank 3. A circulation module 5 is installed on one side of the desulfurization tower 2. The input end of the circulation module 5 is connected to the bottom of the settling tank 3, and the output end is connected to the spray system inside the desulfurization tower 2. Specifically, when natural gas enters the settling tank 3 for gas-liquid separation after desulfurization, the gas portion is discharged through the exhaust pipe 9, while the liquid portion settles at the bottom of the settling tank 3. The circulation module 5 pumps the settled liquid back to the spray system inside the desulfurization tower 2 for recycling. This setup achieves liquid recycling, reduces waste liquid discharge, and improves resource utilization. Simultaneously, the design of the exhaust pipe 9 ensures smooth gas discharge, preventing gas stagnation and accumulation within the settling tank 3, thus improving equipment safety and operating efficiency.

[0037] Example 3

[0038] Please see Figure 1-5 As shown in this embodiment, a natural gas desulfurization pre-purification device has a lifting plate 11 smaller than the partition plate 10, and a sealing rod 12 with a length greater than the depth of the through hole 13. Specifically, when the push-pull mechanism is activated, the lifting plate 11 drives the sealing rod 12 to move up and down. Because the lifting plate 11 is smaller than the partition plate 10, the lifting plate 11 and the sealing rod 12 can move freely below the partition plate 10, while the length design of the sealing rod 12 ensures that it can be fully inserted into or removed from the through hole 13. This arrangement allows the sealing rod 12 to accurately insert into or remove from the through hole 13, achieving reliable opening and closing of the through hole 13, and further improving the control accuracy and efficiency of gas-liquid separation.

[0039] Each sealing rod 12 is tapered, with the diameter of the end of the sealing rod 12 near the lifting plate 11 being larger than the diameter of the other end. Specifically, when the sealing rod 12 is inserted into the through hole 13, its tapered design makes it easier to insert and gradually fit tightly against the inner wall of the through hole 13 during insertion, achieving a seal. When the sealing rod 12 is removed from the through hole 13, its tapered design also reduces friction with the inner wall of the through hole 13, making the removal process smoother. The tapered sealing rod 12 design improves the sealing performance of the through hole 13 and the smoothness of its opening and closing, reduces wear and malfunctions caused by friction, and extends the service life of the equipment.

[0040] This solution includes the following workflow:

[0041] First, the desulfurized natural gas enters the settling tank 3. Inside the settling tank 3, a partition plate 10, with a diameter identical to the inner diameter of the settling tank 3, is fixedly connected to the inner wall of the settling tank 3 by bolts, stably dividing the tank into upper and lower parts. Several through holes 13 are formed at the top of the partition plate 10, while several sealing rods 12, adapted to the through holes 13, are fixedly connected to the top of the lifting plate 11 located below the partition plate 10. In the initial state, the sealing rods 12 are inserted into the through holes 13, sealing them and ensuring that gas and liquid cannot pass directly through, providing a stable structural foundation for subsequent gas-liquid separation.

[0042] When gas-liquid separation is required, the push-pull mechanism is activated. The push-pull mechanism includes a lifting cylinder 8 connected to the top of the settling cylinder 3. The output end of the lifting cylinder 8 slides through the top of the settling cylinder 3 and connects to the end of one of the sealing rods 12. Driven by the lifting cylinder 8, the lifting plate 11 begins to descend, simultaneously moving the sealing rod 12 downwards. Because the size of the lifting plate 11 is smaller than that of the partition plate 10, the lifting plate 11 and the sealing rod 12 can move freely below the partition plate 10. The length design of the sealing rod 12 ensures that it can be fully inserted into or disengaged from the through hole 13. Furthermore, each sealing rod 12 is tapered, with the diameter at one end near the lifting plate 11 being larger than the diameter at the other end. This tapered design allows the sealing rod 12 to more easily and tightly fit against the inner wall of the through hole 13 when inserted, achieving a seal; and reduces friction during disengagement, making the disengagement process smoother.

[0043] As the sealing rod 12 separates from the through hole 13, the passage of the through hole 13 is opened. At this time, the liquid portion of the desulfurized natural gas begins to sink due to gravity, while the gaseous portion rises due to buoyancy. The natural gas is discharged from the top of the settling tank 3, which is connected to an exhaust pipe 9, and enters subsequent processing steps or is used directly. The design of the exhaust pipe 9 ensures smooth gas discharge, preventing gas from stagnating and accumulating inside the settling tank 3.

[0044] Meanwhile, the liquid deposited at the bottom of the settling tank 3 is recycled through the circulation module 5. The input end of the circulation module 5 is connected to the bottom of the settling tank 3, and the output end is connected to the spray system inside the desulfurization tower 2. When the liquid reaches a certain amount, the circulation module 5 pumps the liquid back to the spray system inside the desulfurization tower 2 for reuse.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A desulfurization and pre-purification device for natural gas, characterized in that, include: Dust removal mixing drum, desulfurization tower, settling tank and cleaning module; A partition plate is provided at the center of the interior of the settling treatment cylinder, and a lifting plate is provided at the bottom of the partition plate; The top of the partition plate has several through holes, and the top of the lifting plate is fixedly connected with several sealing rods that are adapted to the through holes. The top of the settling treatment cylinder is provided with a push-pull mechanism, and the output end of the push-pull mechanism slides through the top of the settling treatment cylinder and connects to the top of one of the sealing rods.

2. The natural gas desulfurization pre-purification equipment according to claim 1, characterized in that, The diameter of the partition plate is the same as the inner diameter of the sedimentation treatment cylinder, and the partition plate is bolted to the inner wall of the sedimentation treatment cylinder. A cleaning module is installed on one side of the sedimentation treatment cylinder.

3. The natural gas desulfurization pre-purification equipment according to claim 1, characterized in that, The size of the lifting plate is smaller than that of the partition plate, and the length of the sealing rod is greater than the depth of the through hole.

4. A natural gas desulfurization pre-purification device according to claim 2, characterized in that, The push-pull mechanism includes a lifting cylinder connected to the top of the settling treatment cylinder, the output end of which slides through the top of the settling treatment cylinder and connects to the end of the sealing rod.

5. A natural gas desulfurization pre-purification device according to claim 3, characterized in that, Each of the sealing rods is tapered, with the diameter of the end of the sealing rod closest to the lifting plate being larger than the diameter of the other end.

6. A natural gas desulfurization pre-purification device according to claim 4, characterized in that, The diameter of the output end of the lifting cylinder is smaller than the diameter of the through hole. An exhaust pipe is connected to the top of one side of the settling treatment cylinder. A circulation module is provided on one side of the desulfurization tower. The input end of the circulation module is connected to the bottom of the settling treatment cylinder, and the output end is connected to the spray system inside the desulfurization tower.

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