Molecular sieve dewatering and drying device for liquefied natural gas

Abstract

The utility model discloses a liquefied natural gas molecular sieve dewatering and drying device which comprises a first box body, a pair of first spaces are formed in the first box body, medicament placing mechanisms are installed at the upper ends of the first spaces, and first pipe bodies are inserted into the two ends of the first box body. Communication mechanisms are installed between the pair of first pipe bodies and the pair of first spaces, a concentric-square-shaped plate body and a concentric-square-shaped groove are meshed and blocked through a rubber pad, so that a box-shaped filter screen and the first spaces are installed in a sealed mode through a first rectangular fixing block, at the moment, a refrigerator is started, and the refrigerator is started. Cold air is spirally circulated through second spiral pipe bodies at the gas inlet end and the gas outlet end, at the moment, a three-way pipe body is sleeved with first spiral pipe bodies, so that the temperature in a first space is reduced, and at the moment, a pair of first pipe bodies is connected with the gas inlet end and the recovery end of natural gas; therefore, simple dehydration and drying operation of natural gas is realized.

Description

Technical Field

[0001] This utility model relates to the field of liquefied natural gas processing technology, specifically to a molecular sieve dehydration and drying device for liquefied natural gas. Background Technology

[0002] Liquefied natural gas (LNG) dehydration and drying refers to the removal of moisture from LNG to achieve certain drying standards. The main purposes of LNG dehydration and drying are to prevent hydrate formation, corrosion, icing, improve combustion efficiency, and meet market demands.

[0003] The main methods for natural gas dehydration and drying include solvent absorption, solid adsorption, and low temperature. In order to facilitate the dehydration and drying of liquefied natural gas, a dehydration and drying device using molecular sieves through materials such as hydrated aluminosilicates for solvent and solid absorption and low temperature combination has been designed, thus requiring the use of such a molecular sieve dehydration and drying device for liquefied natural gas. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a liquefied natural gas molecular sieve dehydration and drying device, which solves the technical problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a liquefied natural gas molecular sieve dehydration and drying device, comprising a first box, a pair of first spaces are provided inside the first box, a reagent placement mechanism is installed at the upper end of each pair of first spaces, a first tube is inserted into both ends of the first box, a connecting mechanism is installed between each pair of first tubes and the pair of first spaces, a second box is installed at the lower end of the first box, and a refrigeration mechanism is installed inside the second box;

[0006] The drug placement mechanism includes a first rectangular fixing block. A first rectangular through hole is provided on the upper wall of the first box near the first space. A box-shaped filter screen is movably inserted inside the first rectangular through hole. A second rectangular through hole is provided on the side wall of the box-shaped filter screen. A rubber pad is installed at the upper end of the box-shaped filter screen. The first rectangular fixing block is installed at the upper end of the rubber pad.

[0007] Preferably, a spiral plate is installed on the lower wall of the rubber pad, and a spiral groove is formed on the lower wall of the spiral plate. A spiral-shaped concave groove is formed on the upper wall of the first box near the spiral groove, and the spiral-shaped concave groove engages with the lower wall of the spiral plate.

[0008] Preferably, the connecting mechanism includes a three-way pipe body, a pair of three-way pipe bodies are respectively installed on a pair of first pipe bodies and the pair of three-way pipe bodies are located inside the first housing, and the pair of three-way pipe bodies are respectively connected to a pair of first spaces.

[0009] Preferably, the refrigeration mechanism includes a refrigerator, which is installed inside the second housing. The refrigerator has an exhaust end and an intake end. A second spiral tube is installed on the exhaust end and the intake end. A first spiral tube is installed on the second spiral tube and is fitted onto a three-way tube.

[0010] Beneficial effects

[0011] This invention provides a molecular sieve dehydration and drying device for liquefied natural gas. When dehydrating and drying natural gas, this invention uses solvent absorption and low-temperature methods. The solvent is placed inside a box-shaped filter screen via a container. A pair of box-shaped filters are then inserted into a pair of first spaces inside the first box. A U-shaped plate engages with a U-shaped groove and is sealed with a rubber gasket, thus installing the box-shaped filters and the first spaces using a first rectangular fixing block sealing device. The refrigeration unit is then activated, circulating cold air through second spiral tubes at the inlet and outlet ends. The first spiral tube is then fitted onto a three-way pipe, lowering the temperature inside the first spaces. Finally, the pair of first tubes are connected to the inlet and outlet ends of the natural gas, thus achieving a simple dehydration and drying operation for the natural gas. Attached Figure Description

[0012] Figure 1 This is an isometric structural schematic diagram of the liquefied natural gas molecular sieve dehydration and drying device described in this utility model.

[0013] Figure 2 This is a schematic diagram of the first spiral tube structure of the liquefied natural gas molecular sieve dehydration and drying device described in this utility model.

[0014] Figure 3 This is a schematic diagram of the box-shaped filter screen structure of the liquefied natural gas molecular sieve dehydration and drying device described in this utility model.

[0015] In the diagram: 1. First housing; 2. First tube; 3. Second housing; 4. First rectangular fixing block; 5. Rubber pad; 6. U-shaped plate; 7. Housing-shaped filter screen; 8. T-shaped tube; 9. First spiral tube; 10. Refrigerator; 11. Second spiral tube. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 This utility model provides a technical solution: a liquefied natural gas molecular sieve dehydration and drying device, including a first box 1, a pair of first spaces are opened inside the first box 1, a reagent placement mechanism is installed at the upper end of each pair of first spaces, a first tube 2 is inserted into both ends of the first box 1, a connecting mechanism is installed between each pair of first tubes 2 and the pair of first spaces, a second box 3 is installed at the lower end of the first box 1, and a refrigeration mechanism is installed inside the second box 3;

[0018] The medicine placement mechanism includes a first rectangular fixing block 4. A first rectangular through hole is provided on the upper wall of the first box 1 near the first space. A box-shaped filter screen 7 is movably inserted inside the first rectangular through hole. A second rectangular through hole is provided on the side wall of the box-shaped filter screen 7. A rubber pad 5 is installed on the upper end of the box-shaped filter screen 7. The first rectangular fixing block 4 is installed on the upper end of the rubber pad 5.

[0019] When dehydrating and drying natural gas, solvent absorption and low-temperature methods are used. The solvent is placed inside a box-shaped filter screen 7 via a container. A pair of box-shaped filters 7 are then inserted into a pair of first spaces inside the first box 1. The U-shaped plate 6 engages with the U-shaped groove and is sealed by a rubber gasket 5, thus sealing the first rectangular fixing block 4 and installing the box-shaped filters 7 into the first spaces. The refrigeration unit 10 is then activated, circulating cold air through the second spiral tubes 11 at the inlet and outlet ends. The first spiral tube 9 is then fitted onto the three-way tube 8, lowering the temperature inside the first spaces. Finally, a pair of first tubes 2 are connected to the inlet and outlet ends of the natural gas, thus achieving a simple dehydration and drying operation for the natural gas.

[0020] In this embodiment, the lower wall of the rubber pad 5 is further configured to have a spiral plate 6 installed thereon, the lower wall of the spiral plate 6 has a spiral groove, and the upper wall of the first box 1 has a spiral-shaped concave groove near the spiral groove, the spiral-shaped concave groove engaging with the lower wall of the spiral plate 6.

[0021] In this embodiment, the connecting mechanism is further configured such that a three-way pipe body 8 is installed on a pair of first pipe bodies 2 respectively, and the pair of three-way pipe bodies 8 are located inside the first housing 1, and the pair of three-way pipe bodies 8 are respectively connected to a pair of first spaces.

[0022] In this embodiment, the refrigeration mechanism includes a refrigerator 10, which is installed inside the second housing 3. The refrigerator 10 has an exhaust end and an intake end. A second spiral tube 11 is installed on the exhaust end and the intake end. A first spiral tube 9 is installed on the second spiral tube 11. The first spiral tube 9 is fitted onto a pair of three-way tubes 8.

[0023] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0024] Example: When dehydrating and drying natural gas, solvent absorption and low temperature methods are used. The solvent is placed inside a box-shaped filter 7 via a container. A pair of box-shaped filters 7 are then inserted into a pair of first spaces inside the first box 1. The U-shaped plate 6 engages with the U-shaped groove and is sealed by a rubber gasket 5, thus sealing the box-shaped filter 7 with the first space using the first rectangular fixing block 4. The refrigeration unit 10 is then activated, circulating cold air through the second spiral tubes 11 at the inlet and outlet ends. The first spiral tube 9 is fitted onto the three-way tube 8, lowering the temperature inside the first space. Finally, a pair of first tubes 2 are connected to the inlet and outlet ends of the natural gas, thus achieving a simple dehydration and drying operation for the natural gas.

[0025] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A molecular sieve dehydration and drying device for liquefied natural gas, comprising a first housing (1), characterized in that, The first box (1) has a pair of first spaces inside, and a medicine placement mechanism is installed at the upper end of each pair of first spaces. A first tube (2) is inserted at both ends of the first box (1). A connecting mechanism is installed between each pair of first tubes (2) and the pair of first spaces. A second box (3) is installed at the lower end of the first box (1). A refrigeration mechanism is installed inside the second box (3). The medicine placement mechanism includes a first rectangular fixing block (4), a first rectangular through hole is provided on the upper wall of the first box (1) near the first space, a box-shaped filter screen (7) is movably inserted inside the first rectangular through hole, a second rectangular through hole is provided on the side wall of the box-shaped filter screen (7), a rubber pad (5) is installed on the upper end of the box-shaped filter screen (7), and the first rectangular fixing block (4) is installed on the upper end of the rubber pad (5).

2. The liquefied natural gas molecular sieve dehydration and drying device according to claim 1, characterized in that, The rubber pad (5) has a spiral plate (6) installed on its lower wall. The spiral plate (6) has a spiral groove on its lower wall. The first box (1) has a spiral-shaped concave groove on its upper wall near the spiral groove. The spiral-shaped concave groove engages with the lower wall of the spiral plate (6).

3. The liquefied natural gas molecular sieve dehydration and drying device according to claim 1, characterized in that, The connecting mechanism includes a three-way pipe (8), a pair of three-way pipes (8) are respectively installed on a pair of first pipes (2) and the pair of three-way pipes (8) are located inside the first housing (1), and the pair of three-way pipes (8) are respectively connected to a pair of first spaces.

4. The liquefied natural gas molecular sieve dehydration and drying device according to claim 1, characterized in that, The refrigeration mechanism includes a refrigerator (10), which is installed inside the second housing (3). The refrigerator (10) has an exhaust end and an intake end. A second spiral tube (11) is installed on the exhaust end and the intake end. A first spiral tube (9) is installed on the second spiral tube (11). The first spiral tube (9) is fitted onto the three-way tube (8).

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