Natural gas pretreatment purification device for helium purification

Abstract

The utility model belongs to the technical field of natural gas treatment, and particularly relates to a natural gas pretreatment purification device for helium purification, which comprises a purification tank and a storage box, the purification tank is provided with a gas inlet pipe and a gas outlet pipe, the gas outlet pipe is provided with a communicating pipe, the communicating pipe is connected with the storage box, the storage box is provided with a gas return pipe and an exhaust pipe, and the gas return pipe is connected with the gas inlet pipe. The purification tank comprises an outer shell, an inner shell is arranged in the outer shell, a cavity is formed between the outer shell and the inner shell, a cold air inlet pipe and a cold air outlet pipe are arranged on the outer shell, the cold air inlet pipe and the cold air outlet pipe are communicated with the cavity, and a filter body is arranged in the inner shell. The filter body adsorbs water vapor and then is discharged through the gas outlet pipe, the natural gas discharged along the gas outlet pipe enters the storage boxes which are separately arranged, after the natural gas in the storage boxes is detected, qualified natural gas is conveyed to other tank bodies along the gas outlet pipe, and unqualified natural gas flows back to the gas inlet pipe along the gas return pipe.

Description

Technical Field

[0001] The present application belongs to the technical field of natural gas processing, and in particular relates to a natural gas pretreatment purification device for helium purification. Background Art

[0002] During the extraction, storage and transportation of natural gas, impurities that affect the purity of natural gas will appear. Before purifying helium, the natural gas needs to be pretreated. Among the pretreated substances, water vapor mixed in the natural gas accounts for the majority. In the existing scheme, the pretreatment of water vapor is also relatively simple, mainly achieved by filtration, but the proportion of helium in natural gas is extremely low, requiring a large amount of natural gas supply. Therefore, the amount of pretreatment of natural gas is large. Utility Model Content

[0003] In order to solve the above problems, the present application provides a natural gas pretreatment purification device for helium purification.

[0004] The purpose of this application is to provide a natural gas pretreatment purification device for helium purification.

[0005] In order to achieve the purpose of this application, the technical solution of this application is:

[0006] A natural gas pretreatment purification device for helium purification comprises a purification tank and a storage box, wherein the purification tank is provided with an air inlet pipe and an air outlet pipe, the air outlet pipe is provided with a connecting pipe, the connecting pipe is connected to the storage box, the storage box is provided with an air return pipe and an air exhaust pipe, the air return pipe is connected to the air inlet pipe, the purification tank comprises an outer shell, an inner shell is provided inside the outer shell, a cavity is provided between the outer shell and the inner shell, a cold air inlet pipe and a cold air outlet pipe are provided on the outer shell, the cold air inlet pipe and the cold air outlet pipe are connected to the cavity, and a filter is provided inside the inner shell.

[0007] Furthermore, an inner partition is provided in the cavity of the purification tank, and the cavity is divided into a plurality of partition chambers arranged along the height direction of the purification tank by the inner partition, and each partition chamber is provided with a cold air inlet pipe and a cold air outlet pipe.

[0008] Furthermore, the storage box includes an outer box body, an inner box body is arranged in the outer box body, a space is arranged between the outer box body and the inner box body, and a heating rod is arranged in the space.

[0009] Furthermore, a temperature detection sensor is arranged on the outer box body, a probe of the temperature detection sensor is arranged in the air partition, and an exhaust pipe is arranged on the outer box body, and the exhaust pipe is connected to the air partition.

[0010] Furthermore, the number of storage boxes is at least two, each storage box is provided with a connecting pipe, and the connecting pipe is provided with a valve.

[0011] Furthermore, along the height direction of the purification tank, the temperature of the partition chamber at the lower end is lower than the temperature of the partition chamber at the upper end.

[0012] Furthermore, a one-way valve and a valve are arranged on the air inlet pipe and the air return pipe.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] 1. The present application utilizes a purification tank to remove impurities from natural gas, especially to remove water vapor carried in the natural gas. The natural gas passes through a filter in the purification tank, and the filter adsorbs water vapor before being discharged through an outlet pipe. The natural gas discharged along the outlet pipe enters a plurality of separately arranged storage boxes. After the natural gas in the storage box is tested, qualified natural gas is transported to other tanks along an exhaust pipe, and unqualified natural gas flows back to the intake pipe along a return pipe.

[0015] 2. The present application arranges multiple cooling cavities in the purification tank to reduce the flow rate of the natural gas entering the purification tank, and allows the water vapor in the natural gas to gradually form liquid water, thereby reducing the water vapor content of the natural gas in the outlet pipe. The filter absorbs more and better water vapor, and enables the air inlet pipe to transport a large amount of natural gas to the purification tank, thereby increasing the natural gas processing capacity.

[0016] 3. The present application utilizes storage tanks to store and buffer natural gas, allowing the natural gas to return to normal temperature in the storage tanks and prepare for the purification of natural gas helium. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0018] Figure 1 This is a schematic diagram of the overall structure of this application.

[0019] In the figure:

[0020] 1. Outer shell, 2. Inner shell, 3. Cold air inlet pipe, 4. Cold air outlet pipe, 5. Inlet pipe, 6. Outlet pipe, 7. Connecting pipe, 8. Storage box, 9. Outer box, 10. Inner box, 11. Return air pipe, 12. Exhaust pipe, 13. Temperature detection sensor, 14. Exhaust pipe. DETAILED DESCRIPTION

[0021] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] In the present application, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present application, and do not specifically refer to any part or element in the present application and should not be understood as limitations on the present application.

[0024] Example 1

[0025] The present embodiment is a natural gas pretreatment and purification device for helium purification. The purpose of the natural gas in the present embodiment is to purify and extract the helium in the natural gas, and the pretreatment of the natural gas is mainly to remove impurities in the natural gas, especially to treat water vapor in storage and transportation. It includes a purification tank and a storage box. The purification tank is provided with an air inlet pipe and an air outlet pipe, and the air outlet pipe is provided with a connecting pipe, which is connected to the storage box. The storage box is provided with a return pipe and an exhaust pipe, and the return pipe is connected to the air inlet pipe. The purification tank includes an outer shell, an inner shell is provided in the outer shell, a cavity is provided between the outer shell and the inner shell, a cold air inlet pipe and a cold air outlet pipe are provided on the outer shell, the cold air inlet pipe and the cold air outlet pipe are connected to the cavity, and a filter body is provided in the inner shell.

[0026] Furthermore, an inner partition is provided in the cavity of the purification tank, and the cavity is divided into a plurality of partition chambers arranged along the height direction of the purification tank by the inner partition, and each partition chamber is provided with a cold air inlet pipe and a cold air outlet pipe.

[0027] Furthermore, the storage box includes an outer box body, an inner box body is arranged in the outer box body, a space is arranged between the outer box body and the inner box body, and a heating rod is arranged in the space.

[0028] Furthermore, a temperature detection sensor is arranged on the outer box body, a probe of the temperature detection sensor is arranged in the air partition, and an exhaust pipe is arranged on the outer box body, and the exhaust pipe is connected to the air partition.

[0029] Furthermore, the number of storage boxes is at least two, each storage box is provided with a connecting pipe, and the connecting pipe is provided with a valve.

[0030] Furthermore, along the height direction of the purification tank, the temperature of the partition chamber at the lower end is lower than the temperature of the partition chamber at the upper end.

[0031] Furthermore, a one-way valve and a valve are arranged on the air inlet pipe and the air return pipe.

[0032] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0033] Although the above describes the specific implementation methods of the present application in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present application. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present application, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present application.

Claims

1. A natural gas pretreatment purification device for helium purification, characterized in that: It includes a purification tank and a storage box, wherein the purification tank is provided with an air inlet pipe and an air outlet pipe, the air outlet pipe is provided with a connecting pipe, the connecting pipe is connected to the storage box, the storage box is provided with an air return pipe and an exhaust pipe, the air return pipe is connected to the air inlet pipe; The purification tank comprises an outer shell, an inner shell is arranged inside the outer shell, a cavity is arranged between the outer shell and the inner shell, a cold air inlet pipe and a cold air outlet pipe are arranged on the outer shell, the cold air inlet pipe and the cold air outlet pipe are connected to the cavity, and a filter body is arranged in the inner shell.

2. A natural gas pretreatment purification device for helium purification as claimed in claim 1, characterized in that: An inner partition is arranged in the cavity of the purification tank, and the cavity is divided into a plurality of partition chambers arranged along the height direction of the purification tank by the inner partition, and each partition chamber is provided with a cold air inlet pipe and a cold air outlet pipe.

3. A natural gas pretreatment purification device for helium purification as claimed in claim 1, characterized in that: The storage box comprises an outer box body, an inner box body is arranged in the outer box body, a space is arranged between the outer box body and the inner box body, and a heating rod is arranged in the space.

4. A natural gas pretreatment purification device for helium purification as claimed in claim 3, characterized in that: The outer box body is provided with a temperature detection sensor, the probe of the temperature detection sensor is arranged in the air partition, and the outer box body is provided with an exhaust pipe, which is connected to the air partition.

5. A natural gas pretreatment purification device for helium purification as claimed in claim 1, characterized in that: The number of the storage boxes is at least two, each of the storage boxes is provided with a connecting pipe, and the connecting pipe is provided with a valve.

6. A natural gas pretreatment purification device for helium purification as claimed in claim 2, characterized in that: Along the height direction of the purification tank, the temperature of the partition chamber at the lower end is lower than the temperature of the partition chamber at the upper end.

7. A natural gas pretreatment purification device for helium purification as claimed in claim 1, characterized in that: The air inlet pipe and the air return pipe are provided with a one-way valve and a valve.

Images