Natural gas liquefaction recovery equipment

Abstract

The utility model discloses natural gas liquefaction recovery equipment, and relates to the technical field of natural gas liquefaction recovery. The device comprises a base, a storage cylinder is arranged above the base, and a compression mechanism, a separation mechanism and a dehydration mechanism are arranged on the base; the compression mechanism comprises a storage assembly and a pressurization assembly, the storage assembly comprises a mounting ring fixedly mounted at the bottom of a storage cylinder, a plurality of supporting legs are fixedly mounted at the top of the base and fixedly connected with the mounting ring, and a gas conveying pipe is fixedly mounted at the top of the storage cylinder and fixedly connected with the gas conveying pipe. And an exhaust pipe is fixedly mounted on the outer wall of the storage cylinder. According to the natural gas liquefaction recovery equipment, the compression mechanism, the separation mechanism and the dehydration mechanism are arranged, so that gas and liquid in natural gas can be efficiently separated, and incomplete natural gas liquefaction recovery can be avoided.

Description

Technical Field

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

[0002] Natural gas refers to a type of combustible gas that exists in nature. It is a fossil fuel that includes gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere (including oilfield gas, gas field gas, mud volcano gas, coalbed methane, and biogenic gas, etc.).

[0003] In the related technology, a vaporized natural gas liquefaction recovery device with publication number CN206268794U is disclosed, including a natural gas storage tank, a cooling box, a coolant storage tank, a buffer tank and a cooling auxiliary mechanism; the cooling auxiliary mechanism includes a first exhaust pipe, a first connecting pipe, a reflux pipe, a second connecting pipe, a second exhaust pipe and a third connecting pipe.

[0004] When the device is in use, the natural gas liquefaction needs to be recovered to prevent excessive waste of natural gas. However, the device cannot efficiently separate the gas and liquid in the natural gas, resulting in incomplete recovery of the natural gas liquefaction. Utility Model Content

[0005] The utility model aims to provide a natural gas liquefaction recovery device, which solves the problem of incomplete natural gas recovery caused by failure to efficiently separate gas and liquid in natural gas by arranging a compression mechanism, a separation mechanism and a dehydration mechanism.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a natural gas liquefaction recovery device, comprising a base, a storage cylinder is arranged above the base, and a compression mechanism, a separation mechanism and a dehydration mechanism are arranged on the base;

[0008] The compression mechanism includes a storage component and a boost component. The storage component includes a mounting ring fixedly installed at the bottom of the storage cylinder. A plurality of supporting legs are fixedly installed on the top of the base. The plurality of supporting legs are fixedly connected to the mounting ring. An air supply pipe is fixedly installed on the top of the storage cylinder, and an exhaust pipe is fixedly installed on the outer wall of the storage cylinder.

[0009] Furthermore, the boosting assembly includes a boosting pump fixedly mounted on the top of the base, a first connecting pipe is fixedly mounted on the top of the storage cylinder, and a terminal end of the first connecting pipe is fixedly connected to the boosting pump.

[0010] Furthermore, the separation mechanism includes a precooling heat exchange component and a separation component, the precooling heat exchange component includes two first support blocks fixedly installed on the top of the base, a precooling heat exchanger is fixedly installed on the top of the two first support blocks, a second connecting pipe is fixedly installed on the top of the boosting pump, and the end of the second connecting pipe is fixedly connected to the precooling heat exchanger.

[0011] Furthermore, the separation assembly includes two second support blocks fixedly mounted on the top of the base, separators are fixedly mounted on the top of the two second support blocks, a third connecting pipe is fixedly mounted on the top of the precooling heat exchanger, and the end of the third connecting pipe is fixedly connected to the separator.

[0012] Furthermore, the dehydration mechanism includes a dehydration component and a connection component. The dehydration component includes a mounting seat fixedly mounted on the top of the base, and a dehydration tower is fixedly mounted on the top of the mounting seat.

[0013] Furthermore, the connecting assembly includes a fourth connecting pipe fixedly installed on the top of the separator, the end of the fourth connecting pipe is fixedly connected to the dehydration tower, and a fifth connecting pipe is fixedly installed on the outer wall of the dehydration tower, and the end of the fifth connecting pipe is fixedly connected to the storage cylinder.

[0014] The utility model has the following beneficial effects:

[0015] The utility model provides a storage component to liquefy natural gas. After the natural gas is liquefied, the liquefied natural gas needs to be stored so that it can be used when needed. Under the action of the storage cylinder, the liquefied natural gas can be stored in the storage cylinder; by providing a booster component, the natural gas stored in the storage cylinder will form a huge temperature difference between the outside and the storage cylinder, which will cause the natural gas in the storage cylinder to liquefy and form gas, so as to prevent the waste of natural gas. The gasified natural gas needs to be recovered, and under the action of the booster pump, the natural gas can be compressed to a high-pressure state by the compressor to increase the density and energy content of the natural gas; by providing a pre-cooling heat exchange component, the compressed natural gas can be cooled under the action of the pre-cooling heat exchanger. The temperature of natural gas is lowered to near or below its critical temperature to achieve liquefaction; by providing a separation component, under the action of the separator, the cooled natural gas enters the separation device, and the liquefied natural gas is separated from the unliquefied gas and impurities by the separator, and the separation can ensure the purity and quality of the liquefied natural gas; by providing a dehydration component, a small amount of water may still exist in the liquefied natural gas, and it needs to be dehydrated to meet the specification requirements of liquefied natural gas. Under the action of the dehydration tower, the water in the liquefied natural gas can be removed, thereby meeting the standards for natural gas liquefaction processing; by providing a connection component, the liquefied natural gas can be returned to the storage cylinder through the fifth connecting pipe, effectively avoiding the waste of natural gas.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of a natural gas liquefaction recovery device of the utility model;

[0019] Figure 2 This is a schematic diagram of the left side structure of a natural gas liquefaction recovery device of the utility model;

[0020] Figure 3 This is a schematic diagram of the back structure of a natural gas liquefaction recovery device of the utility model;

[0021] Figure 4 This is a right side structural schematic diagram of a natural gas liquefaction recovery device of the utility model;

[0022] Figure 5 This is a front structural schematic diagram of a natural gas liquefaction recovery device of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Base; 2. Storage cylinder; 3. Mounting ring; 4. Support leg; 5. Air pipe; 6. Exhaust pipe; 7. Booster pump; 8. First connecting pipe; 9. First support block; 10. Precooling heat exchanger; 11. Second connecting pipe; 12. Second support block; 13. Separator; 14. Third connecting pipe; 15. Mounting seat; 16. Dehydration tower; 17. Fourth connecting pipe; 18. Fifth connecting pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5As shown, the utility model is a natural gas liquefaction recovery device, comprising a base 1, a storage cylinder 2 is arranged above the base 1, and a compression mechanism, a separation mechanism and a dehydration mechanism are arranged on the base 1;

[0027] The compression mechanism includes a storage component and a boost component. The storage component includes a mounting ring 3 fixedly installed at the bottom of the storage cylinder 2. A plurality of supporting legs 4 are fixedly installed on the top of the base 1. The plurality of supporting legs 4 are fixedly connected to the mounting ring 3. An air supply pipe 5 is fixedly installed on the top of the storage cylinder 2. An exhaust pipe 6 is fixedly installed on the outer wall of the storage cylinder 2.

[0028] Among them Figure 1 and Figure 2 As shown, the boosting assembly includes a boosting pump 7 fixedly mounted on the top of the base 1 , a first connecting pipe 8 fixedly mounted on the top of the storage cylinder 2 , and a terminal end of the first connecting pipe 8 is fixedly connected to the boosting pump 7 .

[0029] By providing a boosting component, the natural gas stored in the storage cylinder 2 will be liquefied into gas due to a huge temperature difference between the outside and the storage cylinder 2. To prevent waste of natural gas, the vaporized natural gas needs to be recovered. Under the action of the boosting pump 7, the natural gas can be compressed to a high-pressure state through a compressor to increase the density and energy content of the natural gas.

[0030] Among them Figure 1 and Figure 2 As shown, the separation mechanism includes a precooling heat exchange component and a separation component. The precooling heat exchange component includes two first support blocks 9 fixedly installed on the top of the base 1, and a precooling heat exchanger 10 is fixedly installed on the top of the two first support blocks 9. A second connecting pipe 11 is fixedly installed on the top of the booster pump 7, and the end of the second connecting pipe 11 is fixedly connected to the precooling heat exchanger 10.

[0031] By providing a precooling heat exchange component, the compressed natural gas can be cooled by the precooling heat exchanger 10, and the temperature of the natural gas can be reduced to a temperature close to or below its critical temperature to achieve liquefaction.

[0032] Among them Figure 3 As shown, the separation assembly includes two second support blocks 12 fixedly mounted on the top of the base 1, a separator 13 is fixedly mounted on the top of the two second support blocks 12, a third connecting pipe 14 is fixedly mounted on the top of the precooling heat exchanger 10, and the end of the third connecting pipe 14 is fixedly connected to the separator 13.

[0033] By providing a separation component, under the action of the separator 13, the cooled natural gas enters the separation device, and the liquefied natural gas is separated from the unliquefied gas and impurities by the separator, and the separation can ensure the purity and quality of the liquefied natural gas.

[0034] Among them Figure 4 As shown, the dehydration mechanism includes a dehydration component and a connection component. The dehydration component includes a mounting seat 15 fixedly mounted on the top of the base 1 , and a dehydration tower 16 is fixedly mounted on the top of the mounting seat 15 .

[0035] By providing a dehydration component, a small amount of water may still exist in the liquefied natural gas, which needs to be dehydrated to meet the standard requirements of liquefied natural gas. Under the action of the dehydration tower 16, the water in the liquefied natural gas can be removed, thereby meeting the standards for natural gas liquefaction processing.

[0036] Among them Figure 4 and Figure 5 As shown, the connecting assembly includes a fourth connecting pipe 17 fixedly installed on the top of the separator 13, the end of the fourth connecting pipe 17 is fixedly connected to the dehydration tower 16, and a fifth connecting pipe 18 is fixedly installed on the outer wall of the dehydration tower 16, and the end of the fifth connecting pipe 18 is fixedly connected to the storage cylinder 2.

[0037] By providing the connection assembly, the liquefied natural gas can be returned to the storage cylinder 2 through the fifth connection pipe 18, thereby effectively avoiding the waste of natural gas.

[0038] A specific application of this embodiment is:

[0039] Step 1: When in use, the liquefied natural gas enters the storage cylinder 2 through the gas pipeline 5 for storage. The stored liquefied natural gas will be gasified due to the huge temperature difference. The gasified natural gas enters the booster pump 7 through the first connecting pipe 8 for pressurization;

[0040] Step 2: The pressurized natural gas enters the precooling heat exchanger 10 through the second connecting pipe 11 for cooling, thereby achieving liquefaction. The liquefied natural gas enters the separator 13 through the third connecting pipe 14 for separation, so as to separate the liquefied natural gas from the unliquefied gas and impurities.

[0041] Step 3: The separated liquefied natural gas enters the dehydration tower 16 through the fourth connecting pipe 17 for dehydration to remove water from the liquefied natural gas. The dehydrated natural gas returns to the storage cylinder 2 through the fifth connecting pipe 18 for storage.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A natural gas liquefaction recovery device, comprising a base (1), a storage cylinder (2) being arranged above the base (1), characterized in that: The base (1) is provided with a compression mechanism, a separation mechanism and a dehydration mechanism; The compression mechanism comprises a storage component and a boosting component, the storage component comprises a mounting ring (3) fixedly mounted on the bottom of a storage cylinder (2), a plurality of supporting legs (4) fixedly mounted on the top of the base (1), the plurality of supporting legs (4) being fixedly connected to the mounting ring (3), a gas delivery pipe (5) fixedly mounted on the top of the storage cylinder (2), and an exhaust pipe (6) fixedly mounted on the outer wall of the storage cylinder (2).

2. A natural gas liquefaction recovery equipment according to claim 1, characterized in that: The boosting assembly comprises a boosting pump (7) fixedly mounted on the top of the base (1); a first connecting pipe (8) is fixedly mounted on the top of the storage cylinder (2); and the end of the first connecting pipe (8) is fixedly connected to the boosting pump (7).

3. A natural gas liquefaction recovery equipment according to claim 2, characterized in that: The separation mechanism comprises a precooling heat exchange component and a separation component, the precooling heat exchange component comprises two first support blocks (9) fixedly mounted on the top of the base (1), a precooling heat exchanger (10) being fixedly mounted on the top of the two first support blocks (9), a second connecting pipe (11) being fixedly mounted on the top of the booster pump (7), and an end of the second connecting pipe (11) being fixedly connected to the precooling heat exchanger (10).

4. A natural gas liquefaction recovery equipment according to claim 3, characterized in that: The separation assembly comprises two second support blocks (12) fixedly mounted on the top of the base (1), a separator (13) being fixedly mounted on the top of the two second support blocks (12), a third connecting pipe (14) being fixedly mounted on the top of the precooling heat exchanger (10), and an end of the third connecting pipe (14) being fixedly connected to the separator (13).

5. The natural gas liquefaction recovery equipment according to claim 1, characterized in that: The dehydration mechanism comprises a dehydration component and a connection component. The dehydration component comprises a mounting seat (15) fixedly mounted on the top of the base (1). A dehydration tower (16) is fixedly mounted on the top of the mounting seat (15).

6. A natural gas liquefaction recovery equipment according to claim 5, characterized in that: The connection assembly comprises a fourth connection pipe (17) fixedly mounted on the top of the separator (13), the end of the fourth connection pipe (17) being fixedly connected to the dehydration tower (16), a fifth connection pipe (18) being fixedly mounted on the outer wall of the dehydration tower (16), the end of the fifth connection pipe (18) being fixedly connected to the storage cylinder (2).

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