Molecular sieve dehydrating tower structure

Abstract

The utility model discloses a molecular sieve dehydration tower structure, belongs to the technical field of oil gas treatment, and aims to solve the technical problem that the dehydration effect of natural gas is influenced due to low utilization efficiency of a molecular sieve and non-uniform flow distribution of gas in a tower in the prior art. One end of the cylinder is respectively communicated with an air inlet and a charging hole, and the other end of the cylinder is respectively communicated with an air outlet and a discharging hole; the gas inlet and the gas outlet are respectively used for inputting and outputting natural gas; the charging hole and the discharging hole are respectively used for arranging and discharging filler into the barrel body; the gas inlet is communicated with an inlet distributor; a molecular sieve assembly is further arranged in the barrel, and natural gas is input through the gas inlet, passes through the inlet distributor and the molecular sieve assembly and then is output through the gas outlet. The molecular sieve dehydration tower structure can be better used for dehydration work of natural gas, and is good in dehydration effect, simple in structure and controllable in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas processing, in particular to a molecular sieve dehydration tower structure. Background Art

[0002] During the extraction and transportation process of natural gas, it is inevitable that it will be mixed with water. This water will bring a series of problems to the transportation, use and storage of natural gas, such as reducing the calorific value of natural gas, corroding pipeline equipment, and forming hydrates, which will block the pipeline.

[0003] In the prior art, molecular sieve dehydration towers are usually used to remove moisture from natural gas. Molecular sieve is an adsorbent with a porous structure that can effectively adsorb moisture from natural gas. At present, there are some limitations in the structure of natural gas molecular sieve dehydration towers, which leads to low molecular sieve utilization efficiency and uneven gas flow distribution in the tower, thus affecting the dehydration effect of natural gas. Utility Model Content

[0004] The utility model aims to provide a molecular sieve dehydration tower structure to solve the technical problems in the prior art that the molecular sieve utilization efficiency is low and the gas flow distribution in the tower is uneven, thus affecting the dehydration effect of natural gas.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a molecular sieve dehydration tower structure, comprising a cylinder, one end of which is connected to an air inlet and a feeding port, and the other end is connected to an air outlet and a discharge port; the air inlet and the air outlet are used to input and output natural gas respectively; the feeding port and the discharge port are used to arrange and discharge fillers in the cylinder respectively;

[0007] The air inlet is connected to an inlet distributor; a molecular sieve assembly is also arranged in the cylinder, and natural gas is input from the air inlet, passes through the inlet distributor and the molecular sieve assembly, and is output from the air outlet.

[0008] By providing a molecular sieve assembly, the dehydration effect of water-containing natural gas can be improved; by providing an inlet distributor, the water-containing natural gas can be more evenly distributed in the cylinder, thereby improving the dehydration efficiency of the molecular sieve and further improving the dehydration effect of the water-containing natural gas.

[0009] Optionally or preferably, the inlet distributor includes a gas main pipe and a plurality of gas branch pipes symmetrically arranged on both sides of the gas main pipe; the gas main pipe and the gas branch pipe are both provided with a plurality of through holes, and the plurality of through holes are used to output natural gas;

[0010] The distance between the gas main pipe and the gas branch pipe and between adjacent gas branch pipes is 250mm-400mm.

[0011] Optionally or preferably, fixings are provided between the gas main pipe and the gas branch pipe and between adjacent gas branch pipes.

[0012] Since the gas main pipe and the gas branch pipe are tubular in structure as a whole, they will vibrate when natural gas is introduced. By providing fixing parts, the vibration of the gas main pipe and the gas branch pipe can be avoided, the service life can be increased and loosening can be avoided.

[0013] Optionally or preferably, the lower ends of the gas main pipe and the gas branch pipe are both provided with drain holes.

[0014] By providing a drain hole, it is possible to prevent water vapor from condensing in the inlet distributor and reacting with the natural gas to damage the distributor tube wall.

[0015] Optionally or preferably, the molecular sieve assembly comprises a first absorbent, a second absorbent and a third absorbent;

[0016] The first absorber is fixed to the inner wall of the cylinder through a plurality of metal meshes and is arranged close to the inlet distributor;

[0017] The second absorber and the third absorber are fixed inside the cylinder through a support and are arranged close to the air outlet.

[0018] By arranging the first absorber, the second absorber and the third absorber in multiple stages, the dehydration quality of natural gas can be further improved while taking into account the dehydration efficiency.

[0019] Optionally or preferably, the first absorber and the second absorber are small ceramic ball filler layers; and the third absorber is a large ceramic ball filler layer.

[0020] The above-mentioned porcelain balls are used to support and / or cover the molecular sieve, and / or serve as a carrier of the molecular sieve, which can prevent the molecular sieve from being damaged by the impact of airflow during use; at the same time, they can increase the distribution points of gas or liquid and improve the adsorption effect of the molecular sieve on moisture.

[0021] Optionally or preferably, the outer wall of the cylinder is also provided with a hanging column and an axial hanging ear.

[0022] Optionally or preferably, an inspection port is also provided at the lower portion of the cylinder.

[0023] Based on the above technical solution, the utility model can at least produce the following technical effects:

[0024] The utility model provides a molecular sieve dehydration tower structure, which ensures that the water-containing natural gas passing through the molecular sieve can be fully dehydrated by arranging multi-stage molecular sieve components in the cylinder;

[0025] By means of the gas main pipe and multiple gas branches in the inlet distributor, the water-containing natural gas can be evenly distributed in the cylinder, thereby further improving the dehydration effect of the natural gas; in addition, by providing fixings between adjacent gas main pipes and gas branches, the vibration or even loosening of the inlet distributor caused by the impact of the airflow can be avoided, thereby improving the practical life of the inlet distributor; by providing drain holes at the lower ends of the gas main pipe and the gas branch pipe, it can be avoided that water vapor condenses in the inlet distributor and reacts with the natural gas to damage the distributor pipe wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the molecular sieve dehydration tower structure of the utility model;

[0027] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the middle A part;

[0028] Figure 3 It is a structural schematic diagram of an inlet distributor in the molecular sieve dehydration tower structure of the utility model.

[0029] In the figure: 1. Cylinder; 2. Air inlet; 3. Feeding port; 4. Air outlet; 5. Inspection port; 6. Discharge port; 7. Inlet distributor; 8. Hanging column; 9. First absorber; 10. Axial lifting ear; 11. Second absorber; 12. Third absorber; 13. Support member; 14. Drain hole; 15. Fixing member; 16. Gas branch pipe; 17. Gas main pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work belong to the scope of protection of the utility model.

[0031] Example

[0032] See also Figures 1 to 3A molecular sieve dehydration tower structure includes a dehydration tower cylinder 1 as a main body. In this embodiment, the top of the cylinder 1 is respectively connected with an air inlet 2 and a feeding port 3, wherein the air inlet 2 is used to introduce water-containing natural gas, and the feeding port 3 is used to supplement the filler; the bottom end of the cylinder 1 is respectively connected with an air outlet 4 and a discharge port 6, wherein the air outlet 4 is used to output the natural gas dried by the molecular sieve, and the discharge port 6 is used to output the filler to be replaced.

[0033] In order to make the water-containing natural gas introduced into the cylinder 1 more evenly distributed, in the present embodiment, the gas inlet 2 is connected to an inlet distributor 7, which is arranged in the cylinder 1; specifically, the inlet distributor 7 includes a gas main pipe 17 and two gas branch pipes 16 symmetrically arranged on both sides of the gas main pipe 17, and the gas main pipe 17 and the gas branch pipe 16 are both provided with a plurality of exhaust holes for outputting natural gas.

[0034] In order to ensure that the gas pipes (including the main gas pipe 17 and the branch gas pipe 16 ) do not affect each other, in this embodiment, the main gas pipe 17 and the branch gas pipe 16 are spaced at least 250 mm apart.

[0035] In addition, since both the gas main pipe 17 and the gas branch pipe 16 are tubular structures with a certain length, they are prone to vibration or even loosening under the impact of the natural gas airflow. In order to avoid the above situation, in this embodiment, a fixing member 15 is provided between adjacent gas main pipes 17 and gas branch pipes 16. The number of the fixing members 15 is 2. In order to reduce the impact on the airflow, the two fixing members 15 can be provided at different heights.

[0036] In order to prevent water vapor from condensing in the inlet distributor 7 and reacting with the natural gas to damage the distributor tube wall, in this embodiment, a drain hole 14 is provided at the lower end of the gas main pipe 17 and the gas branch pipe 16 so that the water phase condensed in the pipe can be directly discharged.

[0037] In order to ensure the absorption effect of the molecular sieve on the moisture in the natural gas, in this embodiment, the molecular sieve assembly includes a first absorber 9 arranged on the upper part of the cylinder 1 and a second absorber 11 and a third absorber 12 arranged on the lower part of the cylinder 2.

[0038] The first absorber 9 is fixed to the inner wall of the cylinder 1 through multiple metal meshes; the second absorber 11 and the third absorber 12 are fixed to the lower part of the cylinder 1 through the support 13; it should be noted that the second absorber 11 and the third absorber 12 should be set below or slightly below the discharge port 6.

[0039] In this embodiment, the first absorber 9 and the second absorber 11 are small ceramic ball packing layers, and the third absorber 12 is a large ceramic ball packing layer; the above-mentioned ceramic balls are used to support and / or cover the molecular sieve, and / or serve as a carrier of the molecular sieve, which can prevent the molecular sieve from being lost due to the impact of airflow during use; at the same time, it can increase the distribution points of gas or liquid and improve the adsorption effect of the molecular sieve on moisture.

[0040] Those skilled in the art can understand that in order to improve the adaptability of the device and meet work needs, in this embodiment, the outer wall of the cylinder 1 is further provided with a hanging column 8 and an axial lifting lug 10; the lower part of the cylinder 1 is also provided with an inspection port 5.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A molecular sieve dehydration tower structure, characterized in that: The invention comprises a cylinder (1), wherein one end of the cylinder (1) is respectively connected to an air inlet (2) and a charging port (3), and the other end is respectively connected to an air outlet (4) and a discharge port (6); the air inlet (2) and the air outlet (4) are respectively used for inputting and outputting natural gas; the charging port (3) and the discharge port (6) are respectively used for arranging and discharging fillers in the cylinder (1); The gas inlet (2) is connected to an inlet distributor (7); a molecular sieve assembly is also arranged in the cylinder (1); natural gas is input through the gas inlet (2), passes through the inlet distributor (7) and the molecular sieve assembly, and is output through the gas outlet (4).

2. The molecular sieve dehydration tower structure according to claim 1, characterized in that: The inlet distributor (7) comprises a gas main pipe (17) and a plurality of gas branch pipes (16) symmetrically arranged on both sides of the gas main pipe (17); the gas main pipe (17) and the gas branch pipes (16) are both provided with a plurality of through holes, and the plurality of through holes are used to output natural gas; The distance between the gas main pipe (17) and the gas branch pipe (16) and between adjacent gas branch pipes (16) is 250 mm to 400 mm.

3. The molecular sieve dehydration tower structure according to claim 2, characterized in that: Fixing members (15) are provided between the gas main pipe (17) and the gas branch pipe (16) and between adjacent gas branch pipes (16).

4. The molecular sieve dehydration tower structure according to claim 3, characterized in that: The lower ends of the gas main pipe (17) and the gas branch pipe (16) are both provided with drain holes (14).

5. The molecular sieve dehydration tower structure according to claim 1, characterized in that: The molecular sieve assembly comprises a first absorber (9), a second absorber (11) and a third absorber (12); The first absorber (9) is fixed to the inner wall of the cylinder (1) through a plurality of metal meshes and is arranged close to the inlet distributor (7); The second absorber (11) and the third absorber (12) are fixed inside the cylinder (1) via a support member (13) and are arranged close to the air outlet (4).

6. The molecular sieve dehydration tower structure according to claim 5, characterized in that: The first absorber (9) and the second absorber (11) are small ceramic ball filler layers; the third absorber (12) is a large ceramic ball filler layer.

7. The molecular sieve dehydration tower structure according to claim 1, characterized in that: The outer wall of the cylinder (1) is also provided with a hanging column (8) and an axial hanging ear (10).

8. The molecular sieve dehydration tower structure according to claim 1, characterized in that: The lower part of the cylinder (1) is also provided with an inspection port (5).

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