Impurity filtering treatment device and glycol regeneration system

Abstract

The utility model relates to the technical field of liquid filtering treatment, in particular to an impurity filtering treatment device and a glycol regeneration system, a filtering pipeline is additionally arranged between an absorption tower and a rectifying column, and a filtering mechanism is arranged, so that impurities in rich liquor are removed before the rich liquor enters the regeneration system, and the influence of the impurities in the liquor on the regeneration system is reduced; meanwhile, through the combination of the first filter cup and the second filter cup, liquid is filtered twice in the filter mechanism, the impurity removal effect of the filter mechanism is improved, the filter mechanism is convenient to disassemble and assemble on the filter pipeline, the first filter cup and the second filter cup are convenient to clean and replace, and the service life of the filter mechanism is prolonged. According to the glycol regeneration system, the impurity filtering treatment device is adopted, so that impurities in liquid entering the regeneration system are few, the maintenance frequency and the maintenance cost of the regeneration system can be reduced, and the service life of the regeneration system is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid filtration and treatment, in particular to an impurity filtration and treatment device and a glycol regeneration system. Background Art

[0002] The upstream shale gas platform uses a large number of chemical agents (foaming agents, defoaming agents, corrosion inhibitors, and fungicides) during the mining process. Although various chemical agents are separated and dehydrated upstream, some of them will still follow the natural gas into the downstream gas gathering station. The contaminated natural gas will be gravity-separated and filtered again at the terminal, but it is still impossible to completely remove impurities. Natural gas containing impurities will cause glycol contamination during the dehydration process of triethylene glycol, which will in turn cause the impurities in the rich liquid formed after the glycol is converted from lean to rich liquid in the absorption tower to exceed the standard. At present, after the rich liquid comes out of the absorption tower, it will enter the triethylene glycol regeneration system including the distillation column, flash tank, particulate filter, activated carbon filter, and plate heat exchanger, and then enter the distillation column again for heat exchange and then flow into the reboiler. After heating and evaporating the water vapor in the reboiler, it will become lean liquid for recycling.

[0003] At present, gas gathering stations are generally equipped with two sets of triethylene glycol regeneration system skids, one for use and one for backup. During the operation of the regeneration system, equipment blockage, pressure increase, abnormal liquid level, and poor glycol circulation will occur every three months on average. In severe cases, carbon deposition on the reboiler's flame tube will occur and the thermal conductivity will decrease. The reason for this is that the impurities in the recycled glycol exceed the standard, which increases the maintenance frequency of the equipment and leads to higher maintenance costs. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art that impurities exceeding the glycol standard easily affect the regeneration system and increase the equipment maintenance cost, and to provide an impurity filtering and processing device and a glycol regeneration system.

[0005] In a first aspect, the present invention provides an impurity filtering and processing device, comprising:

[0006] Filtration pipeline, used to connect the absorption tower outlet and the distillation column inlet;

[0007] A filtering mechanism is provided on the filtering pipeline and axially communicates with the filtering pipeline;

[0008] The filtering mechanism comprises a shell, and both axial ends of the shell are detachably connected to the filtering pipeline;

[0009] A first filter cup and a second filter cup are provided in the housing, and the first filter cup and the second filter cup have different mesh sizes;

[0010] The opening of the first filter cup faces one side of the absorption tower, and the opening of the second filter cup faces one side of the rectification column.

[0011] The utility model discloses an impurity filtering and processing device, which adds a filtering pipeline between the absorption tower and the distillation column and sets a filtering mechanism, so that impurities in the rich liquid are removed before entering the regeneration system, reducing the impact of impurities in the liquid on the regeneration system, and reducing the maintenance frequency and maintenance cost of the equipment. At the same time, the combination of the first filter cup and the second filter cup allows the liquid to undergo two filtering treatments in the filtering mechanism, which is beneficial to improving the impurity removal effect of the filtering mechanism. The filtering mechanism is easy to disassemble and assemble on the filtering pipeline, which facilitates the cleaning and replacement of the first filter cup and the second filter cup, thereby ensuring the filtering effect of the filtering mechanism.

[0012] Preferably, the first filter cup and the second filter cup are arranged sequentially in the direction of liquid flow, and the mesh number of the first filter cup is larger than the mesh number of the second filter cup, so that impurities in the liquid are gradually removed and the filtering effect is improved.

[0013] Preferably, the housing cavity is cylindrical, with an inner diameter of 10 cm, the first filter cartridge has an 18-mesh filter, and the second filter cartridge has a 7-mesh filter. The specific structure and filter mesh size of the filtration mechanism are selected to accommodate the inlet and outlet sizes of existing absorption towers and distillation columns, and to accommodate the impurities contained in the rich liquid, thereby providing an appropriate filtration treatment effect.

[0014] Preferably, a gap is provided between the first filter cup, the second filter cup, and the housing. This allows the liquid to be discharged from the sidewall and bottom of the first filter cup, then pass through the gap and smoothly enter the second filter cup through the sidewall and bottom of the second filter cup and then be discharged, thereby ensuring that the liquid is fully filtered twice.

[0015] Preferably, a partition is provided on the inner wall of the housing, the first filter cup and the second filter cup abut against both sides of the partition, and the partition is provided with a channel connecting the gap between the two sides. This ensures that the first filter cup and the second filter cup are stably arranged and not easily displaced by liquid impact, thereby ensuring a continuous, stable and effective filtration effect.

[0016] Preferably, the housing comprises a first housing and a second housing, the first housing and the second housing are snap-fitted together, and a seal is provided on the snap-fitting surfaces of the first housing and the second housing, so as to facilitate maintenance and cleaning of the filter mechanism and ensure filtering effect.

[0017] Preferably, the housing is provided with a through detection hole, which is blocked by a threaded plug; and a pressure monitoring mechanism is provided on the filter pipeline, so that liquid can be sampled through the detection hole for testing, thereby monitoring the filtration effect, and the pressure monitoring mechanism ensures that any blockage of the filter mechanism is discovered in a timely manner.

[0018] Preferably, the filtration pipeline includes a main path and a bypass, the main path and the bypass being arranged in parallel, and the filtration mechanism being respectively provided on the main path and the bypass. The main path and the bypass serve as backup for each other, thereby ensuring that the filtration pipeline is always unobstructed and preventing the cleaning and maintenance of the filtration mechanism from affecting the normal use of the regeneration system.

[0019] Preferably, the main circuit is provided with a first valve and a second valve, the first valve and the second valve being respectively arranged on either side of the filter mechanism; the bypass circuit is provided with a third valve and a fourth valve, the third valve and the fourth valve being respectively arranged on either side of the filter mechanism. The use of multiple valves to switch between the main circuit and the bypass facilitates cleaning and maintenance of the filter mechanism.

[0020] In a second aspect, the present invention provides a glycol regeneration system, comprising an impurity filtering and processing device as described above.

[0021] The glycol regeneration system of the present invention adopts the above-mentioned impurity filtering and processing device, so that the liquid entering the regeneration system contains fewer impurities, which can reduce the maintenance frequency and maintenance cost of the regeneration system and extend the service life of the regeneration system.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. This utility model provides an impurity filtration and treatment device. By adding a filtration pipeline and setting a filtration mechanism between the absorption tower and the distillation column, impurities can be removed from the rich liquid before it enters the regeneration system, reducing the impact of impurities in the liquid on the regeneration system and reducing the maintenance frequency and cost of the equipment.

[0024] 2. The utility model provides an impurity filtering and processing device. Through the combination of the first filter cup and the second filter cup, the liquid can be filtered twice in the filter mechanism, which is beneficial to improving the impurity removal effect of the filter mechanism;

[0025] 3. The utility model provides an impurity filtering and processing device. The filter mechanism is easy to disassemble and assemble on the filter pipeline, making it easy to clean and replace the first filter cup and the second filter cup, thereby ensuring the filtering effect of the filter mechanism.

[0026] 4. The present invention provides a glycol regeneration system. By adopting the above-mentioned impurity filtering and processing device, the liquid entering the regeneration system contains fewer impurities, which can reduce the maintenance frequency and cost of the regeneration system and extend the service life of the regeneration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of an impurity filtering and processing device according to Example 3;

[0028] Figure 2Schematic diagram of the structure of the filtering mechanism described in Example 1;

[0029] Figure 3 Schematic diagram of the structure of the housing in Example 1;

[0030] Figure 4 is a top view of the housing described in Example 2;

[0031] Figure 5 is a side view of the housing described in Example 2;

[0032] Markings in the figure:

[0033] 1-filtration line, 11-main line, 12-bypass, 13-first valve, 14-second valve, 15-third valve, 16-fourth valve, 2-housing, 21-first housing, 22-second housing, 23-gap space, 3-first filter cup, 4-second filter cup, 5-partition, 51-channel, 6-detection hole, 61-threaded plug, 7-pressure monitoring mechanism. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments. All technologies implemented based on the present invention fall within the scope of the present invention.

[0035] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating orientation or positional relationships such as "upper," "lower," "left," "right," "center," "inside," and "outside" are based on the orientation or positional relationships shown in the accompanying drawings, or are the orientation or positional relationships in which the product / device / apparatus of the present invention is placed when it is conventionally used. These terms of orientation or positional relationships are merely for the purpose of facilitating the description of the present invention or simplifying the description of the specific embodiments to facilitate a quick understanding of the solutions by technicians, and do not indicate or imply that a particular device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, they should not be understood as limitations on the present invention.

[0036] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", and "parallel", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the present utility model.

[0037] In addition, the expressions “first”, “second”, “third”, etc. in the terms are merely used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0038] In addition, in the description of the embodiments of the present invention, "several", "a plurality", and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0039] Furthermore, in the description of the technical solutions of this utility model, unless otherwise expressly specified / defined / restricted, the terms "disposed," "installed," "connected," "connected," "provided with," "laid," and "arranged" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be welding, riveting, bolting, threading, or other commonly used connection methods in the art. Such connections may be mechanical, electrical, or communication connections; they may be direct connections, indirect connections through an intermediate medium, or internal connections between two components.

[0040] Example 1

[0041] like Figures 1-4 As shown, an impurity filtering and processing device of this embodiment includes a filtering pipeline 1 and a filtering mechanism, one end of the filtering pipeline 1 is connected to the outlet of the absorption tower and the other end is connected to the inlet of the distillation column, the filtering mechanism includes a shell 2, the axial ends of the shell 2 are axially connected to the filtering pipeline 1 and are detachably connected, a first filter cup 3 and a second filter cup 4 are provided in the shell 2, the mesh sizes of the first filter cup 3 and the second filter cup 4 are different, the opening of the first filter cup 3 faces the side of the absorption tower, and the opening of the second filter cup 4 faces the side of the distillation column.

[0042] In an optional embodiment, if Figure 4As shown, flanges are provided at both axial ends of the shell 2 , and the axial ends of the shell 2 are flange-connected to the filter pipeline 1 to facilitate the assembly and disassembly of the filter mechanism on the filter pipeline 1 .

[0043] In an optional embodiment, the inner cavity of the shell 2 is cylindrical, and the first filter cup 3 and the second filter cup 4 are both cup-shaped structural parts, having an annular part located on the opening side and a cylindrical filter cylinder connected to the annular part. The filter cylinder is closed by a filter plate at one end away from the annular part, so that not only the side walls of the first filter cup 3 and the second filter cup 4 can be filtered, but the bottom walls can also be filtered. When in use, the first filter cup 3 and the second filter cup 4 are arranged in an opening-opposite state in the shell 2. The liquid enters from the opening of the first filter cup 3, is discharged from the side walls and bottom wall of the first filter cup 3, and then enters the second filter cup 4 from the bottom wall and side walls of the second filter cup 4, and is discharged from the opening of the second filter cup 4, so that the liquid undergoes at least two filtration treatments in the filtration mechanism, thereby improving the filtration treatment effect.

[0044] In one or more embodiments, the mesh size of the first filter cup 3 is larger than that of the second filter cup 4, and the first filter cup 3 and the second filter cup 4 are arranged sequentially in the direction of liquid flow, so that impurities in the liquid are gradually removed in the filtration mechanism.

[0045] In an optional embodiment, the housing 2 has an inner diameter of 10 cm, the first filter cartridge has an 18-mesh filter, the second filter cartridge has a 7-mesh filter, the first and second filter cartridges have the same outer diameter, and a gap 23 of at least 5 cm is formed between the first and second filter cartridges and the inner wall of the housing 2. This allows the liquid to be discharged from the sidewalls and bottom of the first filter cup 3, then pass through the gap 23 and smoothly enter the second filter cup 4 from the sidewalls and bottom of the second filter cup 4 before being discharged again, ensuring that the liquid undergoes two complete filtration processes, thereby improving the filtration effect.

[0046] In one or more embodiments, Figure 2 、 Figure 3 As shown, a separator 5 is provided on the inner wall of the housing 2. The bottoms of the first filter cup 3 and the second filter cup 4 abut against either side of the separator 5. The separator 5 is provided with a channel 51 that connects the gap 23 on either side. This ensures that the first filter cup 3 and the second filter cup 4 are stably arranged and not easily displaced by liquid impact, thereby ensuring a continuous, stable and effective filtration effect. The separator 5 also serves to separate the first filter cup 3 and the second filter cup 4, ensuring smooth flow of liquid.

[0047] In an optional embodiment, the partitions 5 may be protrusions provided on the inner wall of the housing 2 , and channels 51 communicating with the gap spaces 23 on both sides are formed between adjacent partitions 5 .

[0048] In an optional embodiment, the separator 5 may also be an annular structure provided on the inner wall of the housing 2 , and a channel 51 communicating with the gap spaces 23 on both sides is provided on the annular structure.

[0049] In one or more embodiments, a pressure monitoring mechanism 7 is further provided on the filter pipe 1. The pressure monitoring mechanism 7 ensures that blockage of the filter mechanism is discovered in time.

[0050] In an optional embodiment, the pressure monitoring mechanism 7 is arranged on one side of the inlet of the filtering mechanism.

[0051] In one or more embodiments, Figure 2 As shown, the housing 2 is provided with a through detection hole 6, which is blocked by a threaded plug 61. Liquid can be sampled through the detection hole 6 for detection, thereby realizing monitoring of the filtering effect.

[0052] In an optional embodiment, the detection hole 6 is located at a through position inside the shell 2 close to the opening side of the second filter cup 4, so that the liquid taken out from the detection hole 6 is in a state of at least having been filtered by the first filter cup 3, so that the filtering treatment status of the first filter cup 3 can be judged by the impurity content of the liquid, so as to provide accurate guidance for subsequent replacement or maintenance.

[0053] An impurity filtering and processing device of this embodiment adds a filtering pipeline 1 between the absorption tower and the distillation column, and sets a filtering mechanism to remove impurities from the rich liquid before entering the regeneration system, thereby reducing the impact of impurities in the liquid on the regeneration system and reducing the maintenance frequency and maintenance cost of the equipment. At the same time, the combination of the first filter cup 3 and the second filter cup 4 allows the liquid to undergo two filtering treatments in the filtering mechanism, which is beneficial to improving the impurity removal effect of the filtering mechanism. The filtering mechanism is easy to disassemble and assemble on the filtering pipeline 1, which facilitates the cleaning and replacement of the first filter cup 3 and the second filter cup 4, thereby ensuring the filtering effect of the filtering mechanism.

[0054] Example 2

[0055] like Figure 4 、 Figure 5 As shown, an impurity filtering and processing device of this embodiment has a structure similar to that of embodiment 1, with the difference that: the shell 2 includes a first shell 21 and a second shell 22, the first shell 21 and the second shell 22 are snap-fitted and connected, and a seal is provided on the snap-fitting surface of the first shell 21 and the second shell 22.

[0056] An impurity filtering and processing device of this embodiment adopts a shell 2 composed of two halves, so that the shell 2 can be disassembled according to actual conditions. The first filter cup 3 and the second filter cup 4 can be removed after removing the first shell 21 or the second shell 22, which facilitates the maintenance and cleaning of the filter mechanism, improves maintenance efficiency, and ensures the filtering processing effect of the filter mechanism.

[0057] In an optional embodiment, the first shell 21 and the second shell 22 are symmetrical with respect to the fastening surface, and a rubber sealing gasket is provided on the fastening surface to improve the sealing performance after the first shell 21 and the second shell 22 are combined.

[0058] Example 3

[0059] like Figure 1 As shown, an impurity filtering and processing device of this embodiment has a structure similar to that of Example 1, except that: the filtering pipeline 1 includes a main path 11 and a bypass 12, the main path 11 and the bypass 12 are arranged in parallel, and the main path 11 and the bypass 12 are respectively provided with a filtering mechanism, the main path 11 is provided with a first valve 13 and a second valve 14, and the bypass 12 is provided with a third valve 15 and a fourth valve 16.

[0060] In the impurity filtering and processing device of this embodiment, the main path 11 and the bypass 12 serve as backup for each other. By adjusting the opening and closing of multiple valves, the main path 11 and the bypass 12 can be switched and used separately or simultaneously, thereby ensuring that the filter pipeline 1 is always unobstructed and avoiding affecting the normal use of the regeneration system when the filter mechanism is cleaned and repaired.

[0061] In an optional embodiment, the first valve 13 , the second valve 14 , the third valve 15 and the fourth valve 16 are all gate valves.

[0062] In an optional embodiment, the first valve 13 and the second valve 14 are respectively arranged on both sides of the filtering mechanism; the third valve 15 and the fourth valve 16 are respectively arranged on both sides of the filtering mechanism.

[0063] Example 4

[0064] A glycol regeneration system of this embodiment includes the impurity filtering and processing device as described above.

[0065] The glycol regeneration system of this embodiment adopts the above-mentioned impurity filtering and processing device, so that there are fewer impurities in the liquid entering the regeneration system, which can reduce the maintenance frequency and maintenance cost of the regeneration system and extend the service life of the regeneration system.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An impurity filtering and processing device, characterized in that: include: A filter pipe (1) is used to connect the outlet of the absorption tower and the inlet of the distillation column; A filtering mechanism is provided on the filtering pipeline (1) and is axially connected to the filtering pipeline (1); The filtering mechanism comprises a housing (2), and both axial ends of the housing (2) are detachably connected to the filtering pipeline (1); A first filter cup (3) and a second filter cup (4) are provided in the housing (2); the first filter cup (3) and the second filter cup (4) have different mesh sizes; The opening of the first filter cup (3) faces one side of the absorption tower, and the opening of the second filter cup (4) faces one side of the rectification column.

2. The impurity filtering and processing device according to claim 1, characterized in that: The first filter cup (3) and the second filter cup (4) are arranged in sequence in the direction of liquid flow, and the mesh number of the first filter cup (3) is greater than the mesh number of the second filter cup (4).

3. The impurity filtering and processing device according to claim 2, characterized in that: The inner cavity of the shell (2) is cylindrical, the inner diameter of the shell (2) is 10 cm, the mesh number of the first filter cup (3) is 18 meshes, and the mesh number of the second filter cup (4) is 7 meshes.

4. The impurity filtering and processing device according to claim 2, characterized in that: A gap space (23) is provided between the first filter cup (3), the second filter cup (4) and the housing (2).

5. The impurity filtering and processing device according to claim 4, characterized in that: A partition (5) is provided on the inner wall of the housing (2); the first filter cup (3) and the second filter cup (4) abut against both sides of the partition (5); and a channel (51) is provided on the partition (5) for communicating with the gap spaces (23) on both sides.

6. An impurity filtering and processing device according to any one of claims 1 to 5, characterized in that: The housing (2) comprises a first housing (21) and a second housing (22); the first housing (21) and the second housing (22) are snap-fitted together; and sealing members are provided on snap-fitting surfaces of the first housing (21) and the second housing (22).

7. The impurity filtering and processing device according to claim 6, characterized in that: The housing (2) is provided with a through detection hole (6), and the detection hole (6) is blocked by a threaded plug (61); and a pressure monitoring mechanism (7) is provided on the filter pipeline (1).

8. The impurity filtering and processing device according to claim 7, characterized in that: The filtering pipeline (1) comprises a main path (11) and a bypass path (12); the main path (11) and the bypass path (12) are arranged in parallel; and the filtering mechanism is respectively provided on the main path (11) and the bypass path (12).

9. The impurity filtering and processing device according to claim 8, characterized in that: The main path (11) is provided with a first valve (13) and a second valve (14), and the first valve (13) and the second valve (14) are respectively arranged on both sides of the filtering mechanism; the bypass path (12) is provided with a third valve (15) and a fourth valve (16), and the third valve (15) and the fourth valve (16) are respectively arranged on both sides of the filtering mechanism.

10. A glycol regeneration system, characterized in that: It comprises an impurity filtering and processing device as described in any one of claims 1 to 9.

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