Molecular sieve absorption tower for dehydration treatment of natural gas

Abstract

The utility model discloses a molecular sieve absorption tower for dehydration treatment of natural gas, and relates to the technical field of dehydration treatment of natural gas, the outer part of an upper absorption tower is sleeved with a positioning sleeve, the inner side of the positioning sleeve is provided with sealing rings outside the upper absorption tower and a lower absorption cylinder, and the outer side of the positioning sleeve is provided with a limiting rod in a penetrating manner; and a movable plate is connected to one end of a limiting rod, a telescopic air cylinder is further installed on the outer side of a positioning sleeve, a speed reduction barrel is arranged at the upper end of an air outlet pipe, a first speed reduction disc and a second speed reduction disc are arranged in the speed reduction barrel from top to bottom, and a water absorption layer is further arranged at the position, below the second speed reduction disc, in the speed reduction barrel. Through arrangement of a positioning sleeve, a moving plate, a limiting rod, a telescopic air cylinder and a sealing ring, the telescopic air cylinder works to enable the moving plate to move to drive the limiting rod to move, so that the purpose of conveniently disassembling the upper absorption tower and the lower absorption barrel to replace a molecular sieve in the upper absorption tower and the lower absorption barrel can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of natural gas dehydration treatment technology, and in particular to a molecular sieve absorption tower for natural gas dehydration treatment. Background Technology

[0002] Natural gas refers to all gases that exist naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere. The main use of natural gas is as fuel. It can also be used to manufacture carbon black, chemicals, and liquefied petroleum gas. Propane and butane produced from natural gas are important raw materials for modern industry. However, natural gas needs to be dehydrated after extraction, otherwise it will affect pipeline equipment and safety. Currently, molecular sieve absorption towers are commonly used to achieve the purpose of dehydration.

[0003] Chinese patent discloses a drying tower for natural gas dehydration treatment (publication number CN221822124U). This patented technology delivers natural gas into the cylinder through a natural gas inlet pipe at the top. The alumina ball filling layer can absorb some of the moisture in the natural gas and also makes the natural gas evenly distributed at the top of the cylinder. The continuous input of natural gas causes the natural gas in the cylinder to slowly pass through the molecular sieve and finally reach the ceramic ball filling layer before being discharged through the natural gas outlet pipe. This increases the delivery time of natural gas in the cylinder, thereby ensuring that the molecular sieve can fully absorb the moisture in the natural gas. This reduces the height of the drying tower and lowers maintenance and construction costs.

[0004] However, most existing molecular sieve absorption towers for natural gas dehydration are designed as a single unit, which makes it difficult to quickly replace the internal molecular sieves, resulting in low practicality. For example, the aforementioned comparative document uses a single molecular sieve absorption tower for natural gas dehydration. In practical applications, the molecular sieves inside the absorption tower need to be replaced after a period of dehydration, and the single-unit design slows down this replacement process. Therefore, those skilled in the art have provided a molecular sieve absorption tower for natural gas dehydration to solve the problems mentioned in the background section. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a molecular sieve absorption tower for natural gas dehydration treatment, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a molecular sieve absorption tower for natural gas dehydration treatment, comprising: an upper absorption tower, a lower absorption cylinder disposed at the lower end of the upper absorption tower, an inlet pipe fixed at the lower end of the lower absorption cylinder, and an outlet pipe disposed at the upper end of the upper absorption tower. A positioning sleeve is fitted around the upper absorption tower. Sealing rings are provided on the inner side of the positioning sleeve on both the upper and lower absorption cylinders. A limiting rod is provided through the outer side of the positioning sleeve. One end of the limiting rod is connected to a moving plate. A telescopic cylinder is also installed on the outer side of the positioning sleeve. A speed-reducing cylinder is provided at the upper end of the outlet pipe. A first speed-reducing plate and a second speed-reducing plate are respectively disposed inside the speed-reducing cylinder from top to bottom. A water-absorbing layer is also disposed inside the speed-reducing cylinder below the second speed-reducing plate.

[0007] As a further technical solution of this utility model, a second connecting pipe is installed at the lower end of the speed reduction cylinder, and a first connecting pipe is provided at the upper end of the speed reduction cylinder. A connecting sleeve is threadedly connected to the outside of the second connecting pipe, and the connecting sleeve is also threadedly connected to the outside of the air outlet pipe.

[0008] As a further technical solution of this utility model, the material of the water-absorbing layer is activated alumina, and the outer side of the water-absorbing layer is in contact with the inner wall of the deceleration cylinder.

[0009] As a further technical solution of this utility model, a circular speed reduction hole is provided on the left half of the first speed reduction disc, and a circular speed reduction hole is also provided on the right half of the second speed reduction disc.

[0010] As a further technical solution of this utility model, the outer side of the absorption tower is symmetrically provided with positioning holes, and one end of the limiting rod penetrates the inner side of the positioning sleeve and is embedded in the interior of the positioning hole.

[0011] As a further technical solution of this utility model, two limiting rods are symmetrically arranged on one side of the moving plate, and the telescopic cylinder is installed between the two limiting rods, with the telescopic end of the telescopic cylinder connected to one side of the moving plate.

[0012] As a further technical solution of this utility model, the inner side of the sealing ring is in contact with the outer surface of the upper absorption tower and the lower absorption cylinder, and the sealing ring is made of rubber.

[0013] This invention provides a molecular sieve absorption tower for natural gas dehydration treatment, which has the following advantages compared with the prior art:

[0014] 1. This design is for a molecular sieve absorption tower for natural gas dehydration treatment. Through the arrangement of a positioning sleeve, a moving plate, a limiting rod, a telescopic cylinder, and a sealing ring, the operation of the telescopic cylinder causes the moving plate to move, which in turn moves the limiting rod, allowing the limiting rod to move out of the positioning hole. This facilitates the disassembly of the upper absorption tower and the lower absorption cylinder to replace the molecular sieve inside. The structure is simple and easy to operate, which is convenient for subsequent natural gas dehydration treatment.

[0015] 2. This design is a molecular sieve absorption tower for natural gas dehydration treatment. Through the arrangement of a speed-reducing cylinder, a first connecting pipe, a second connecting pipe, a connecting sleeve, a first speed-reducing plate, a second speed-reducing plate, and a water-absorbing layer, the flow rate of natural gas can be reduced by the first and second speed-reducing plates, so that the natural gas can be better absorbed and dehydrated in the absorption tower. At the same time, the water-absorbing layer can improve its water absorption purpose, which is practical. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a molecular sieve absorption tower for natural gas dehydration treatment.

[0017] Figure 2 This is a schematic diagram of a moving plate in a molecular sieve absorption tower for natural gas dehydration treatment.

[0018] Figure 3 This is a schematic diagram of the sealing ring structure in a molecular sieve absorption tower for natural gas dehydration treatment.

[0019] Figure 4 This is a schematic diagram of the internal structure of a speed-reducing cylinder in a molecular sieve absorption tower used for natural gas dehydration treatment.

[0020] In the diagram: 1. Upper absorption tower; 11. Outlet pipe; 12. Positioning hole; 2. Lower absorption cylinder; 21. Inlet pipe; 3. Speed ​​reduction cylinder; 31. First connecting pipe; 32. Second connecting pipe; 321. Connecting sleeve; 33. First speed reduction disc; 34. Second speed reduction disc; 35. Water absorption layer; 4. Positioning sleeve; 41. Moving plate; 42. Limiting rod; 43. Telescopic cylinder; 44. Sealing ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This utility model provides a molecular sieve absorption tower technology solution for natural gas dehydration treatment: it includes: an upper absorption tower 1, a lower absorption cylinder 2 located at the lower end of the upper absorption tower 1, an inlet pipe 21 fixed at the lower end of the lower absorption cylinder 2, and an outlet pipe 11 located at the upper end of the upper absorption tower 1. A positioning sleeve 4 is sleeved on the outside of the upper absorption tower 1. A sealing ring 44 is provided on the inner side of the positioning sleeve 4 on both the upper absorption tower 1 and the lower absorption cylinder 2. A limiting rod 42 is provided through the outer side of the positioning sleeve 4. One end of the limiting rod 42 is connected to a moving plate 41. A telescopic cylinder 43 is also installed on the outer side of the positioning sleeve 4. The upper end of the gas outlet pipe 11 is provided with a speed reduction cylinder 3. The inside of the speed reduction cylinder 3 is provided with a first speed reduction plate 33 and a second speed reduction plate 34 from top to bottom. The inside of the speed reduction cylinder 3 is also provided with a water absorption layer 35 below the second speed reduction plate 34. This setting can realize the purpose of installing and disassembling the upper absorption tower 1 and the lower absorption cylinder 2 by using the positioning sleeve 4, so as to replace the molecular sieve inside them, effectively improving their working efficiency. Furthermore, the speed reduction cylinder 3 can reduce the speed of the natural gas entering the upper absorption tower 1 and the lower absorption cylinder 2, so that it can better dehydrate the molecular sieve inside them.

[0023] like Figure 1 and Figure 4 As shown, a second connecting pipe 32 is installed at the lower end of the speed reduction cylinder 3, and a first connecting pipe 31 is provided at the upper end of the speed reduction cylinder 3. A connecting sleeve 321 is threadedly connected to the outside of the second connecting pipe 32, and the connecting sleeve 321 is also threadedly connected to the outside of the air outlet pipe 11. This arrangement uses the connecting sleeve 321 to connect the air outlet pipe 11 and the second connecting pipe 32, that is, to connect the speed reduction cylinder 3 to achieve the purpose of speed reduction.

[0024] like Figure 4 As shown, the material of the water-absorbing layer 35 is activated alumina, and the outer side of the water-absorbing layer 35 is in contact with the inner wall of the deceleration cylinder 3. This setting utilizes the water-absorbing layer 35 to re-absorb water from the natural gas entering the deceleration cylinder 3, thereby improving its dehydration properties and making it highly practical.

[0025] like Figure 4 As shown, a circular speed reduction hole is provided on the left half of the first speed reduction disc 33, and a circular speed reduction hole is also provided on the right half of the second speed reduction disc 34. This arrangement uses the circular speed reduction holes provided on the first speed reduction disc 33 and the second speed reduction disc 34 to achieve the purpose of speed reduction, so that the natural gas can be better dehydrated.

[0026] like Figure 2 and Figure 3As shown, symmetrical positioning holes 12 are provided on the outer side of the upper absorption tower 1. One end of the limiting rod 42 penetrates the inner side of the positioning sleeve 4 and is embedded in the positioning hole 12. Two limiting rods 42 are symmetrically arranged on one side of the moving plate 41. A telescopic cylinder 43 is installed between the two limiting rods 42. The telescopic end of the telescopic cylinder 43 is connected to one side of the moving plate 41. This arrangement uses the operation of the telescopic cylinder 43 to make the moving plate 41 move outside the positioning sleeve 4, thereby allowing the limiting rod 42 on one side of the moving plate 41 to move and be embedded in the positioning hole 12 to quickly connect the upper absorption tower 1 and the lower absorption cylinder 2. It also facilitates disassembly and allows for the replacement of the molecular sieve.

[0027] like Figure 2 and Figure 3 As shown, the inner side of the sealing ring 44 is in contact with the outer surface of the upper absorption tower 1 and the lower absorption cylinder 2, and the material of the sealing ring 44 is rubber. This setting can achieve the sealing of the connection between the upper absorption tower 1 and the lower absorption cylinder 2 through the sealing ring 44, and avoid air leakage.

[0028] The working principle of this utility model is as follows: In the molecular sieve absorption tower for natural gas dehydration, molecular sieves are installed inside the upper absorption tower 1 and the lower absorption cylinder 2. When natural gas enters the upper absorption tower 1 and the lower absorption cylinder 2 through the inlet pipe 21, it undergoes dehydration treatment through the molecular sieves. Furthermore, when the natural gas is discharged from the outlet pipe 11, it enters the deceleration cylinder 3. After entering, the natural gas is decelerated by the first deceleration plate 33 and the second deceleration plate 34, thereby reducing the speed of the natural gas in the upper absorption tower 1 and the lower absorption cylinder. The internal structure of the absorption tower 2 allows for better dehydration, while the water-absorbing layer 35 enables re-absorption, thus improving the dehydration effect. When it is necessary to replace the molecular sieve inside the upper absorption tower 1 and the lower absorption cylinder 2, the operation of the telescopic cylinder 43 will cause the moving plate 41 to move, which in turn drives the limiting rod 42 to move. This allows the limiting rod 42 to move out of the positioning hole 12, making it easy to disassemble the upper absorption tower 1 and the lower absorption cylinder 2 to replace the molecular sieve inside. The structure is simple and easy to operate, which facilitates the subsequent dehydration treatment of natural gas.

[0029] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A molecular sieve absorption tower for natural gas dehydration treatment, characterized in that, include: The upper absorption tower (1), the lower absorption cylinder (2) located at the lower end of the upper absorption tower (1), the inlet pipe (21) fixed at the lower end of the lower absorption cylinder (2), and the outlet pipe (11) located at the upper end of the upper absorption tower (1) are provided with a positioning sleeve (4). The inner side of the positioning sleeve (4) is provided with sealing rings (44) on the outside of the upper absorption tower (1) and the lower absorption cylinder (2), and a limit rod (42) is provided through the outer side of the positioning sleeve (4). One end of the limit rod (42) is connected to a moving plate (41). A telescopic cylinder (43) is also installed on the outer side of the positioning sleeve (4). A speed-reducing cylinder (3) is provided at the upper end of the air outlet pipe (11). The inside of the speed-reducing cylinder (3) is provided with a first speed-reducing plate (33) and a second speed-reducing plate (34) from top to bottom. A water-absorbing layer (35) is also provided inside the speed-reducing cylinder (3) below the second speed-reducing plate (34).

2. The molecular sieve absorption tower for natural gas dehydration treatment according to claim 1, characterized in that, The lower end of the speed reduction cylinder (3) is equipped with a second connecting pipe (32), and the upper end of the speed reduction cylinder (3) is provided with a first connecting pipe (31). The external thread of the second connecting pipe (32) is connected to a connecting sleeve (321), and the connecting sleeve (321) is also threaded to the outside of the air outlet pipe (11).

3. A molecular sieve absorption tower for natural gas dehydration treatment according to claim 1, characterized in that, The absorbent layer (35) is made of activated alumina, and the outer side of the absorbent layer (35) is in contact with the inner wall of the deceleration cylinder (3).

4. A molecular sieve absorption tower for natural gas dehydration treatment according to claim 1, characterized in that, The first speed reduction disc (33) has a circular speed reduction hole on its left half, and the second speed reduction disc (34) also has a circular speed reduction hole on its right half.

5. A molecular sieve absorption tower for natural gas dehydration treatment according to claim 1, characterized in that, The upper absorption tower (1) has symmetrically provided positioning holes (12) on its outer side, and one end of the limiting rod (42) penetrates the inner side of the positioning sleeve (4) and is embedded in the interior of the positioning hole (12).

6. A molecular sieve absorption tower for natural gas dehydration treatment according to claim 1, characterized in that, Two limiting rods (42) are symmetrically arranged on one side of the moving plate (41), and the telescopic cylinder (43) is installed between the two limiting rods (42). The telescopic end of the telescopic cylinder (43) is connected to one side of the moving plate (41).

7. A molecular sieve absorption tower for natural gas dehydration treatment according to claim 1, characterized in that, The inner side of the sealing ring (44) is in contact with the outer surface of the upper absorption tower (1) and the lower absorption cylinder (2), and the material of the sealing ring (44) is rubber.

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