Natural gas drying device

Abstract

The utility model discloses a natural gas drying device which comprises a drying tank, a gas outlet pipe is arranged at the top of the drying tank, and a gas inlet pipe is arranged on the side wall, close to the bottom, of the drying tank. A plurality of condensation assemblies and a plurality of drying layers are arranged in the drying tank in the height direction of the drying tank, the condensation assemblies are arranged at intervals, and the condensation assemblies are located above the gas inlet pipe and used for shunting natural gas introduced into the gas inlet pipe and primarily condensing and collecting water vapor contained in the natural gas; the top and the bottom of each condensation assembly are connected with a cold source ingress pipe and a cold source return pipe correspondingly, and the cold source ingress pipes and the cold source return pipes are connected with external refrigeration equipment and used for supplying cold to the condensation assemblies. The drying layers are located above the condensation assemblies, and the multiple drying layers are evenly distributed between the uppermost condensation assembly and the top of the drying tank in the axial direction and used for conducting secondary collection on residual water vapor in natural gas.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas, in particular to a natural gas drying device. Background Art

[0002] Natural gas typically contains a small amount of water vapor, which can directly affect its combustion. Existing natural gas drying systems primarily use dryers containing adsorbents to directly absorb water vapor from the natural gas. Because natural gas drying is a continuous process, high water vapor content significantly impacts the dryer's performance and service life.

[0003] Therefore, it is necessary to provide a natural gas drying device to solve the problems mentioned in the above background technology. Utility Model Content

[0004] To achieve the above object, the present invention provides the following technical solution: a natural gas drying device, comprising: a drying tank, wherein an air outlet pipe is provided on the top of the drying tank, and an air inlet pipe is provided on the side wall of the drying tank near the bottom;

[0005] Along the height direction of the drying tank, a plurality of condensation components and a plurality of drying layers are arranged inside the drying tank, and the plurality of condensation components are arranged at intervals. The condensation components are located above the air inlet pipe and are used to divert the natural gas introduced by the air inlet pipe and to preliminarily condense and collect the water vapor contained in the natural gas;

[0006] The top and bottom of each condensing assembly are respectively connected to a cold source inlet pipe and a cold source return pipe, and the cold source inlet pipe and the cold source return pipe are connected to an external refrigeration device for supplying cold to the condensing assembly;

[0007] The drying layer is located above the condensing assembly, and a plurality of the drying layers are evenly distributed axially between the uppermost condensing assembly and the top of the drying tank, and are used for secondary collection of residual water vapor in the natural gas.

[0008] Preferably, a liquid outlet pipe is coaxially arranged at the bottom of the drying tank, and the bottom of the drying tank is a funnel-shaped structure.

[0009] Preferably, the condensation component includes:

[0010] A diverter plate, the diverter plate being coaxially fixed in the drying can, and two groups of the diverter plates being spaced apart along the axial direction of the drying can, the diverter plates being evenly penetrated by a plurality of diverter holes, located between the two groups of the diverter plates, and the corresponding diverter holes being connected via a condensation conduit;

[0011] The drying tank, the two groups of distribution plates and the condensing pipes jointly form a condensing cavity, and the cold source inlet pipe and the cold source return pipe are communicated with the bottom and the top of the condensing cavity respectively.

[0012] Preferably, the two groups of distribution plates are provided with flow uniformizing plates on the opposite sides, and a plurality of avoiding holes are formed in the flow uniformizing plates corresponding to the condensing pipes, so as to facilitate the installation of the condensing pipes.

[0013] Preferably, the condensing pipe comprises a throat pipe section, and expansion pipe sections are symmetrically arranged at the two ends of the throat pipe section, and the taper surfaces of the throat pipe section and the expansion pipe sections are connected.

[0014] Preferably, the specifications of the throat pipe sections of the condensing pipes of the condensing assemblies gradually decrease from bottom to top.

[0015] Preferably, the drying layer is an activated carbon filter layer.

[0016] Compared with the prior art, the natural gas drying device has the following beneficial effects:

[0017] In the natural gas drying device, a plurality of drying layers and condensing assemblies with different specifications are arranged in the drying tank along the axial direction, and the water vapor in the natural gas is collected and treated for multiple times. The natural gas is distributed and condensed by the condensing assemblies, so that the natural gas is fully contacted with the cold source, and the water vapor in the natural gas is gradually and multiple times condensed and collected by the plurality of condensing assemblies, so as to improve the condensing and collecting effect of the water vapor, reduce the water vapor to be absorbed by the subsequent drying layer, and improve the service life of the subsequent drying layer. At the same time, the structure of the condensing pipe is specially arranged, so that the water vapor can be throttled and cooled, the water vapor condensing time is shortened, and the condensing and collecting effect of the water vapor is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is a schematic view of the overall structure of a natural gas drying device;

[0019] Figure 2 Fig. 2 is a schematic view of the sectional structure of a natural gas drying device;

[0020] Figure 3 Fig. 3 is a schematic view of the structure of a condensing assembly of a natural gas drying device;

[0021] Figure 4 Fig. 4 is a schematic view of the structure of a condensing pipe of a natural gas drying device;

[0022] In the figure: 1. Drying tank; 2. Air inlet pipe; 3. Liquid outlet pipe; 4. Air outlet pipe; 5. Condensation assembly; 6. Cold source inlet pipe; 7. Cold source return pipe; 8. Drying layer; 9. Diverter plate; 10. Diverter hole; 11. Condensation duct; 12. Flow equalizing plate; 13. Throat section; 14. Pipe expansion section. DETAILED DESCRIPTION

[0023] See also Figures 1-4 The utility model provides a natural gas drying device, comprising: a drying tank 1, a gas outlet pipe 4 is provided on the top of the drying tank 1, and an gas inlet pipe 2 is provided on the side wall of the drying tank 1 near the bottom;

[0024] Along the height direction of the drying tank 1, a plurality of condensation components 5 and a plurality of drying layers 8 are provided inside the drying tank 1. The plurality of condensation components 5 are spaced apart from each other. The condensation components 5 are located above the air inlet pipe 2 and are used to divert the natural gas introduced into the air inlet pipe 2 and to preliminarily condense and collect the water vapor contained in the natural gas.

[0025] The top and bottom of each condensing assembly 5 are respectively connected to a cold source inlet pipe 6 and a cold source return pipe 7, and the cold source inlet pipe 6 and the cold source return pipe 7 are connected to an external refrigeration device for supplying cold to the condensing assembly 5;

[0026] The drying layer 8 is located above the condensation component 5 , and a plurality of the drying layers 8 are evenly distributed axially between the uppermost condensation component 5 and the top of the drying tank 1 , for secondary collection of residual water vapor in the natural gas.

[0027] It should be explained that when natural gas is dried, the natural gas to be dried is introduced into the bottom of the drying tank 1 through the air inlet pipe 2. The natural gas flows from bottom to top and is diverted by the condensation component 5 so that it is in full contact with the cold source and most of the water vapor is condensed and collected. The water vapor remaining in the natural gas is then further absorbed by the drying layer 8, and finally the natural gas flows out from the air outlet pipe 4, completing the drying process of the natural gas.

[0028] Specifically, the drying tank 1 is made of thermal insulation material.

[0029] Furthermore, a liquid outlet pipe 3 is coaxially provided at the bottom of the drying tank 1 , and the bottom of the drying tank 1 is a funnel-shaped structure. The liquid outlet pipe 3 is used to discharge the liquid water condensed by the condensation component 5 .

[0030] Furthermore, the condensation component 5 includes:

[0031] A plurality of flow distribution plates 9 are coaxially arranged in the drying tank 1 and are spaced apart along the axial direction of the drying tank 1, a plurality of flow distribution holes 10 are uniformly arranged on each flow distribution plate 9, and the flow distribution holes 10 corresponding to each other are connected by a condensing pipe 11.

[0032] The drying tank 1, the two groups of flow distribution plates 9, and the condensing pipes 11 jointly form a condensing cavity, and the cold source inlet pipe 6 and the cold source return pipe 7 are respectively connected to the bottom and the top of the condensing cavity.

[0033] Preferably, the condensing pipe 11 is made of a cold-conducting material.

[0034] It should be explained that when the water vapor in the natural gas is initially collected, the cooling medium is injected into the condensing cavity through the cold source inlet pipe 6, the cooling medium fills the condensing cavity from bottom to top, the water vapor in the natural gas flowing through the condensing pipe 11 is condensed, and the condensed water vapor is converted into liquid water and flows along the wall of the condensing pipe 11 to the bottom of the drying tank 1 for collection, and when the amount of the collected water reaches a certain amount, the water is discharged through the liquid outlet pipe 3. The cooling medium includes gaseous cooling medium and liquid cooling medium.

[0035] Further, the opposite sides of the two groups of flow distribution plates 9 are respectively provided with flow uniformizing plates 12, a plurality of avoiding holes are arranged on the flow uniformizing plate 12 corresponding to the condensing pipe 11, the avoiding holes are used for facilitating the installation of the condensing pipe 11, and the rest of the flow uniformizing plate 12 is uniformly provided with a plurality of flow uniformizing holes for uniformly distributing the cooling medium.

[0036] The cold source inlet pipe 6 and the cold source return pipe 7 are respectively arranged between the flow distribution plate 9 and the flow uniformizing plate 12.

[0037] In this embodiment, when the gaseous cooling medium is used to condense the water vapor, the gaseous cooling medium can be more uniformly distributed in the condensing cavity by the flow uniformizing plate 12, and the phenomenon that the condensing effects of the condensing pipes 11 at different positions are different can be avoided. At the same time, the flow uniformizing plate 12 can reduce the flow rate of the liquid cooling medium, facilitate the overall return of the cooling medium in the condensing cavity, and improve the temperature uniformity of the distribution of the cooling medium.

[0038] Preferably, the projection angle of the cold source inlet pipe 6 and the cold source return pipe 7 is 180°, which facilitates the sufficient exchange of the cooling medium in the condensing cavity and improves the condensing effect.

[0039] Further, the condensing pipe 11 comprises a throat pipe section 13, expansion pipe sections 14 are symmetrically arranged at both ends of the throat pipe section 13, the connecting surfaces of the throat pipe section 13 and the expansion pipe sections 14 are tapered, and the flow distribution plate 9 and the flow uniformizing plate 12 are fixedly arranged on the expansion pipe sections 14.

[0040] It needs to be explained that the condensing pipe 11 is equivalent to a Venturi tube, after the natural gas enters the drying tank 1, it is divided by the flow dividing hole 10, the contact area with the cooling medium is increased, and the condensation effect on water vapor is improved; at the same time, the natural gas is throttled and cooled by the throat pipe section 13, and the condensation effect on water vapor is further improved.

[0041] Further, the specifications of the condensing pipe 11 and the throat pipe section 13 of each condensing assembly 5 gradually decrease from bottom to top, and the throttling and cooling effect of the condensing pipe 11 is increased layer by layer.

[0042] Further, the drying layer 8 is an activated carbon filter layer.

[0043] In specific implementation, the natural gas to be dried is introduced into the bottom of the drying tank through the gas inlet pipe, the natural gas flows from bottom to top, is divided by the multiple condensing assemblies, and is fully contacted with the cold source to condense and collect the water vapor in the natural gas, then the residual water vapor in the natural gas is further absorbed by the multiple drying layers, finally, the natural gas is discharged from the gas outlet pipe, and the drying treatment of the natural gas is completed.

[0044] The above is only a preferred specific implementation mode of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A natural gas drying device, characterized in that: include: A drying tank (1), wherein an air outlet pipe (4) is provided on the top of the drying tank (1), and an air inlet pipe (2) is provided on the side wall of the drying tank (1) near the bottom; Along the height direction of the drying tank (1), a plurality of condensation components (5) and a plurality of drying layers (8) are arranged inside the drying tank (1), and the plurality of condensation components (5) are arranged at intervals from each other. The condensation components (5) are located above the air inlet pipe (2) and are used to divert the natural gas introduced through the air inlet pipe (2) and to preliminarily condense and collect the water vapor contained in the natural gas; The top and bottom of each condensing assembly (5) are respectively connected to a cold source introduction pipe (6) and a cold source return pipe (7), and the cold source introduction pipe (6) and the cold source return pipe (7) are connected to an external refrigeration device for supplying cold to the condensing assembly (5); The drying layer (8) is located above the condensation component (5), and a plurality of the drying layers (8) are evenly distributed axially between the uppermost condensation component (5) and the top of the drying tank (1), and are used for secondary collection of residual water vapor in the natural gas.

2. A natural gas drying device according to claim 1, characterized in that: A liquid outlet pipe (3) is coaxially arranged at the bottom of the drying tank (1), and the bottom of the drying tank (1) is a funnel-shaped structure.

3. A natural gas drying device according to claim 1, characterized in that: The condensation component (5) comprises: A diverter plate (9), the diverter plate (9) is coaxially fixed in the drying tank (1), and two groups are spaced apart along the axial direction of the drying tank (1), a plurality of diverter holes (10) are evenly opened on the diverter plate (9), and are located between the two groups of the diverter plates (9), and the corresponding diverter holes (10) are connected through a condensation duct (11); The drying tank (1), the two groups of manifolds (9), and the condensation ducts (11) together constitute a condensation cavity, and the cold source inlet pipe (6) and the cold source return pipe (7) are respectively connected to the bottom and the top of the condensation cavity.

4. A natural gas drying device according to claim 3, characterized in that: Flow equalizing plates (12) are arranged at intervals on the opposite sides of the two groups of diverter plates (9), and a number of avoidance holes are opened on the flow equalizing plates (12) corresponding to the condensation duct (11) to facilitate the installation of the condensation duct (11), and a number of flow equalizing holes are evenly arrayed on the rest of the flow equalizing plates (12) to make the cooling medium more evenly distributed.

5. A natural gas drying device according to claim 3, characterized in that: The condensation conduit (11) comprises: a throat section (13), expansion sections (14) are symmetrically arranged at both ends of the throat section (13), a conical transition is formed at the connection between the throat section (13) and the expansion section (14), and the diverter plate (9) and the flow equalizing plate (12) are fixed on the expansion section (14).

6. A natural gas drying device according to claim 5, characterized in that: The specifications of the condensation conduit (11) and the throat section (13) of each condensation component (5) gradually decrease from bottom to top.

7. A natural gas drying device according to claim 3, characterized in that: The drying layer (8) is an activated carbon filter layer.

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