Liquefied natural gas treatment equipment

Abstract

The utility model relates to the technical field of natural gas production, and discloses liquefied natural gas treatment equipment which comprises a cooling tank, a gas condenser is fixedly connected to the bottom of the cooling tank, a plurality of blowing baffles are fixedly connected to the interior of the cooling tank, annular pipes are fixedly connected to the blowing baffles and the interior of the cooling tank, and the annular pipes are fixedly connected to the bottom of the cooling tank. And the outward side of the blowing baffle is fixedly connected with a connecting pipe, the outward side of the connecting pipe is fixedly connected with the outer wall of the annular pipe, and a filtering assembly is arranged on the left side in the cooling tank. According to the utility model, through the filtering form that the spherical filter is integrally divided into two halves, when the filtering plate is replaced, the filtering plate needing to be replaced can be moved out of the cooling tank only by rotating the spherical filter, meanwhile, the normal operation of equipment is not influenced, the time wasted by replacing the filtering plate is saved, and the production efficiency is improved.

Description

Technical Field

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

[0002] Liquefied natural gas (LNG) refers to the state in which natural gas is liquefied into a liquid at an extremely low temperature (about -162 °C). This liquefaction process can reduce the volume of natural gas by about 600 times, making it convenient for storage and transportation. Liquefied natural gas is usually achieved through a process of cooling and compression. A large amount of heat is released when natural gas is compressed. When natural gas is compressed, the gas molecules are squeezed, and the internal kinetic energy increases, resulting in a temperature rise. This phenomenon is called compression heating.

[0003] After retrieval, the existing Chinese patent publication number is: CN209926924U, which provides a pretreatment device for natural gas liquefaction. This patent cools natural gas through a cooling coil. During cooling, the natural gas effectively slows down the flow rate through a baffle plate, thus greatly improving the cooling effect of the cooling coil; the cooled natural gas filters out the oil fume and dust contained in the natural gas through a filter screen, thereby improving the cleanliness of the natural gas; the filter screen is clamped and fixed by a first retaining ring and a second retaining ring, and the first retaining ring and the second retaining ring are fixed by a clamping device, which is convenient for disassembly and installation, thus facilitating the cleaning and replacement of the filter screen, with simple operation and convenient use, reducing the work difficulty of the staff.

[0004] Although the above patent can greatly improve the cooling effect, the above pretreatment device for natural gas liquefaction still has the following problems: Natural gas will generate oil fume and dust. However, the filter screen is located at the rear, and the cooling coil will contact the oil fume and dust first. After long-term use, the oil fume and dust will accumulate on the outer wall of the cooling coil, thus affecting the cooling effect of the cooling coil.

[0005] In view of the above problems, a liquefied natural gas treatment device is proposed. Summary of the Utility Model

[0006] In order to solve the problem that the surface of the cooling coil is affected by the accumulation of oil fume and dust after long-term use in the prior art, the present application provides a liquefied natural gas treatment device.

[0007] To achieve the above object, the utility model provides the following technical solutions:

[0008] A liquefied natural gas treatment device, including a cooling tank, a gas condenser is fixedly connected to the bottom of the cooling tank, a plurality of blowing baffles are fixedly connected inside the cooling tank, the blowing baffles, an annular pipe is fixedly connected inside the cooling tank, a connecting pipe is fixedly connected to the outward side of the blowing baffle, and the outward side of the connecting pipe is fixedly connected to the outer wall of the annular pipe. A filtering assembly is arranged on the left side inside the cooling tank.

[0009] The filtering assembly includes a rotating base, the rotating base is fixedly connected to the left side inside the cooling tank, and a spherical filter is rotatably connected to the right side inside the rotating base.

[0010] A side plate is fixedly connected to the left side inside the rotating base, and an air inlet pipe is fixedly connected inside the side plate.

[0011] A partition is fixedly connected to the middle inside the spherical filter, and a plurality of uniformly distributed air inlet holes are formed in the outer wall of the spherical filter.

[0012] Two filter frames are slidably connected inside the spherical filter, and a filter plate is slidably connected inside the filter frame.

[0013] A semi-circular baffle is fixedly connected inside the filter frame.

[0014] A hose is fixedly connected to the left side of the rear end of the gas condenser, and the outer wall of the hose is fixedly connected to the top of the annular pipe.

[0015] A plurality of empty slots are formed inside the blowing baffle, and a plurality of blowing holes are formed inside the empty slots.

[0016] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0017] 1. In the present utility model, by means of the annular pipe cooperating with the blowing baffle to make the cooling inert gas spray out, it avoids the accumulation of oil fume and dust on the cooling coil, affects the cooling efficiency, has a longer service life, and reduces the maintenance frequency.

[0018] 2. In the present utility model, through the filtering form of the spherical filter being divided into two halves integrally, when replacing the filter plate, only by rotating the spherical filter can the filter plate to be replaced be moved out of the cooling tank, and at the same time, it does not affect the normal operation of the equipment, saves the time wasted in replacing the filter plate, and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall view of a liquefied natural gas treatment device proposed by the present utility model;

[0020] Figure 2 It is a sectional view of the cooling tank of a liquefied natural gas treatment device proposed by the present utility model;

[0021] Figure 3 Schematic diagram of the partial structure of the annular pipe of a liquefied natural gas treatment device proposed by the present utility model;

[0022] Figure 4 Cross-sectional view of the air blowing baffle of a liquefied natural gas treatment device proposed by the present utility model;

[0023] Figure 5 Cross-sectional view of the spherical filter of a liquefied natural gas treatment device proposed by the present utility model;

[0024] Figure 6 Partial explosion view of the spherical filter of a liquefied natural gas treatment device proposed by the present utility model.

[0025] Legend description:

[0026] 1. Cooling tank; 2. Gas condenser; 3. Rotating base; 4. Annular pipe; 5. Air blowing baffle; 6. Connecting pipe; 7. Empty slot; 8. Air blowing hole; 9. Hose; 10. Intake pipe; 11. Spherical filter; 12. Filter frame; 13. Filter plate; 14. Partition board; 15. Intake hole; 16. Semi-circular baffle; 17. Side plate. Specific implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Generally, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0029] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present application, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present application. In addition, in the description of the present application, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0031] In addition, in the description of the present application, if terms such as "horizontal" and "vertical" are used, it does not mean that the components are required to be absolutely horizontal or hanging vertically, but they can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0032] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0033] Embodiment 1: A liquefied natural gas treatment device includes a cooling tank 1. A gas condenser 2 is fixedly connected to the bottom of the cooling tank 1. A plurality of blowing baffles 5 are fixedly connected inside the cooling tank 1. An annular pipe 4 is fixedly connected inside the cooling tank 1. A connecting pipe 6 is fixedly connected to the outer side of the blowing baffle 5. The outer side of the connecting pipe 6 is fixedly connected to the outer wall of the annular pipe 4. A filtering assembly is arranged on the left side inside the cooling tank 1.

[0034] The gas condenser 2 operates to output condensed inert gas, such as nitrogen, and then it is transported to the inside of the annular pipe 4 through a hose 9. Its staggered blowing baffles 5 will extend the flow distance of the natural gas, so as to fully cool the heat of the natural gas.

[0035] Embodiment 2: A hose 9 is fixedly connected to the left side of the rear end of the gas condenser 2. The outer wall of the hose 9 is fixedly connected to the top of the annular pipe 4. A plurality of empty slots 7 are opened inside the blowing baffle 5, and a plurality of blowing holes 8 are opened inside the empty slots 7.

[0036] It enters into the empty slot 7 of the blowing baffle 5 through the connecting pipe 6, and finally is evenly blown into the interior of the cooling tank 1 through the air blowing holes 8 in the empty slot 7, and the natural gas is cooled down.

[0037] As one of the optimized structural designs of Embodiment 1, as Figures 1-6 shown, the filtering assembly includes a rotating base 3, the rotating base 3 is fixedly connected to the left side inside the cooling tank 1, and a spherical filter 11 is rotatably connected to the right side inside the rotating base 3. A side plate 17 is fixedly connected to the left side inside the rotating base 3, and an air inlet pipe 10 is fixedly connected inside the side plate 17. A plurality of uniformly distributed air inlet holes 15 are formed in the outer wall of the spherical filter 11. A semi-circular baffle 16 is fixedly connected inside the filter frame 12. Two filter frames 12 are slidably connected inside the spherical filter 11, a filter plate 13 is slidably connected inside the filter frame 12, and a partition plate 14 is fixedly connected to the middle inside the spherical filter 11.

[0038] If the filter plate 13 needs to be replaced, only need to rotate the cooling tank 1, so that the filter plates 13 are interchanged in position, then remove the filter frame 12, and take off the filter plate 13 for maintenance or replacement. At this time, the natural gas can still pass through the rotated filter plate 13 for filtering and ventilation. The filter frame 12 is fully squeezed and slid into the spherical filter 11, and it can realize the limiting function by itself. The partition plate 14 divides the spherical filter 11 into two parts, ensuring the normal operation of the equipment when the filter plate 13 is replaced.

[0039] Working principle: Natural gas enters into the rotating base 3 through the air inlet pipe 10, and after being blocked by the semi-circular baffle 16, it is filtered by the filter plate 13 at the upper end of the spherical filter 11 and then enters into the interior of the cooling tank 1 through the air inlet holes 15. If the filter plate 13 needs to be replaced, only need to rotate the cooling tank 1, so that the filter plates 13 are interchanged in position, then remove the filter frame 12, and take off the filter plate 13 for maintenance or replacement. At this time, the natural gas can still pass through the rotated filter plate 13 for filtering and ventilation. Then, the gas condenser 2 operates to output condensed inert gas, which is then transported to the interior of the annular pipe 4 through the hose 9, then enters into the empty slot 7 of the blowing baffle 5 through the connecting pipe 6, and finally is blown into the interior of the cooling tank 1 through the air blowing holes 8 in the empty slot 7, and the natural gas is cooled down.

[0040] Finally, it should be noted that: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A liquefied natural gas processing device, comprising a cooling tank (1), characterized in that: The bottom of the cooling tank (1) is fixedly connected to a gas condenser (2), and a plurality of blowing baffles (5) are fixedly connected inside the cooling tank (1). The blowing baffles (5) and the cooling tank (1) are fixedly connected to an annular tube (4). The outward side of the blowing baffles (5) is fixedly connected to a connecting tube (6), and the outward side of the connecting tube (6) is fixedly connected to the outer wall of the annular tube (4). A filter assembly is arranged on the left side inside the cooling tank (1).

2. A liquefied natural gas processing equipment according to claim 1, characterized in that: The filter assembly comprises a rotating base (3), the rotating base (3) is fixedly connected to the left side of the interior of the cooling tank (1), and a spherical filter (11) is rotatably connected to the right side of the interior of the rotating base (3).

3. A liquefied natural gas processing equipment according to claim 2, characterized in that: A side plate (17) is fixedly connected to the left side of the rotating base (3), and an air intake pipe (10) is fixedly connected to the inside of the side plate (17).

4. A liquefied natural gas processing equipment according to claim 2, characterized in that: A partition plate (14) is fixedly connected in the middle of the spherical filter (11), and a plurality of evenly distributed air inlet holes (15) are provided on the outer wall of the spherical filter (11).

5. A liquefied natural gas processing equipment according to claim 2, characterized in that: The spherical filter (11) is internally slidably connected to two filter frames (12), and the filter frame (12) is internally slidably connected to a filter plate (13).

6. A liquefied natural gas processing equipment according to claim 5, characterized in that: A semicircular baffle (16) is fixedly connected inside the filter frame (12).

7. The liquefied natural gas processing equipment according to claim 1, characterized in that: A hose (9) is fixedly connected to the left side of the rear end of the gas condenser (2), and the outer wall of the hose (9) is fixedly connected to the top of the annular tube (4).

8. The liquefied natural gas processing equipment according to claim 1, characterized in that: A plurality of empty slots (7) are provided inside the air blowing baffle (5), and a plurality of air blowing holes (8) are provided inside the empty slots (7).

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