Double-cylinder type two-stage separation container

Abstract

The utility model discloses a double-cylinder type two-stage separation container, which relates to the technical field of gas-liquid separation of natural gas and comprises a separation cavity, the separation cavity comprises a first-stage separation cavity and a second-stage separation cavity, the first-stage separation cavity is connected with the second-stage separation cavity, and a liquid storage cavity is arranged below each separation cavity; the separation cavity comprises a gas inlet and a gas outlet, the gas inlet is provided with a cyclone separation structure, the gas outlet is connected with a valve, and a corrugated plate mist catcher and a gas rectifier are sequentially arranged on the inner wall of the separation cavity between the gas inlet and the gas outlet; a silk screen mist catcher is arranged at the gas outlet, the gas outlet of the first-stage separation cavity is connected with the gas inlet of the second-stage separation cavity through a pipeline, and a first valve is arranged on the pipeline; according to the utility model, a two-stage combined separation structure is provided for a medium through double chambers, and the process can be adjusted to only use one-stage separation or simultaneously use two-stage separation, so that different working conditions can be more conveniently coped with.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas gas-liquid separation, and particularly relates to a double-barrel two-stage separation container. Background Art

[0002] The raw natural gas produced by the gas well fluid produced from the formation generally contains oil and water. When the gas gathering station receives the gas from the external gas pipeline of the receiving station, in order to meet the requirements of gas transportation and subsequent treatment processes, a separation container needs to be set up to separate the gas and liquid of the raw natural gas. The existing horizontal separator mainly uses separation elements such as baffle plates, fin-type baffle plates, corrugated plate mist eliminators, and mist catching wire meshes to achieve gas-liquid separation. The raw natural gas enters the separator from the gas inlet, and the separated natural gas is connected to the downstream process through the outlet, and the separated liquid is connected to the downstream process through the drain port.

[0003] With the in-depth development of gas fields, a three-dimensional station layout method that uses an innovative mode of spatial extension to replace the traditional planar spread to maximize the utilization of land space has gradually begun to be applied. In this case, in order to improve the natural gas separation efficiency, two conventional horizontal separators are often arranged side by side on a skid base and placed on a three-dimensional platform. At present, in natural gas gas-liquid separation, problems such as the inability to meet the requirement of low liquid content in the gas and the large floor area of equipment in the case of three-dimensional station layout will be encountered. Therefore, there is an urgent need for a separation container that can separate in stages, improve the gas-liquid separation efficiency, and reduce the occupied space.

[0004] Patent Application No. CN116407898A (a horizontal separator): A horizontal separator includes an inlet unit, a separation cylinder, a plurality of separation elements, a plurality of element inner cylinders, an outlet unit, a bottom support, a liquid storage cylinder, and a drain port; the plurality of separation elements are respectively installed in a plurality of corresponding element inner cylinders, and the plurality of element inner cylinders are sequentially installed in the separation cylinder; the inlet unit and the outlet unit are respectively arranged at positions near both ends of the separation cylinder, and the installation of the separation elements is independent and modular, and can also be prefabricated in advance, realizing that a small-diameter container can install the required internal parts to ensure the separation efficiency. However, this structure is a one-chamber separation, and there is a problem that the separation effect cannot meet the expectation in some working conditions.

[0005] Patent Application CN203393117U (a separation and flashing device) is divided into a gas-liquid separation chamber and a flashing and liquid separation chamber by a plug; the gas-liquid separation chamber is provided with an inlet and an outlet, and is connected with a separation chamber liquid storage pipe provided with a drain port and a maintenance blind plate; the flashing and liquid separation chamber is provided with an inlet and an outlet for the gas coming from the main vent pipe, and is provided with a liquid separation chamber inlet connecting the drain port of the separation chamber, and the flashing and liquid separation chamber is connected with a liquid separation chamber liquid storage pipe provided with a drain port and a maintenance blind plate; it belongs to an integrated natural gas treatment device like the utility model, but the key point is to provide a combined separation structure for the medium to separate and flash, and the device function and separation structure are different from those of the utility model. Summary of the Invention

[0006] The purpose of the present utility model is to provide a double-barrel two-stage separation container, which can improve the medium separation efficiency and select different separation levels according to different application scenarios, so as to overcome the deficiencies of low separation efficiency in the prior art and the inability to meet the requirements of low liquid content in gas.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] It includes a separation chamber, the separation chamber includes a primary separation chamber and a secondary separation chamber, the primary separation chamber and the secondary separation chamber are connected, and a liquid storage chamber is provided below both the separation chambers; the separation chamber includes a gas inlet and a gas outlet, a cyclone separation structure is provided at the gas inlet, a valve is connected to the gas outlet, and a corrugated plate mist eliminator and a gas rectifier are sequentially arranged on the inner wall of the separation chamber between the gas inlet and the gas outlet; a wire mesh mist eliminator is provided at the gas outlet; the gas inlet is provided with a cyclone separation structure, which can perform preliminary gas-liquid separation on the gas and improve the separation efficiency. After the gas is preliminarily separated, it undergoes secondary separation by the corrugated plate mist eliminator and the gas rectifier, and then passes through the wire mesh mist eliminator. Since the wire mesh mist eliminator is fixedly installed in the cylinder before the gas outlet in a downward-mounted manner, this setting can increase the internal area of the wire mesh mist eliminator, improve the gas-liquid separation efficiency, and at the same time, changing the installation of the wire mesh mist eliminator from outside the device to inside the separation chamber can also reduce the height of the device; the gas outlet of the primary separation chamber and the gas inlet of the secondary separation chamber are connected by a pipeline, and a first valve is provided on the pipeline.

[0009] Furthermore, the liquid storage chamber is communicated with the separation chamber through a plurality of connecting pipes. The liquid and solid particles separated by the separation chamber will enter and accumulate in the liquid storage chamber through the connecting pipes. An outlet and a sewage outlet are provided at the bottom of the liquid storage chamber. The outlet is generally open, and the liquid will flow out directly. The sewage outlet is generally closed and is opened when the solid particles accumulate to a certain extent for cleaning.

[0010] Furthermore, the corrugated plate mist eliminator includes a corrugated plate group, a first bow-shaped baffle is arranged outside the corrugated plate group, the corrugated plate group includes a plurality of corrugated plates and a first connecting rod, and a first positioning sleeve is arranged on the first connecting rod; the corrugated plates pass through the first positioning sleeve and are connected to the first connecting rod. The bottom of the corrugated plate group is connected with a first support plate, and the corrugated plate group is fixed on the inner wall of the separation chamber through the first support plate. A first gas baffle is arranged below the corrugated plate group.

[0011] Furthermore, the gas rectifier includes a serpentine plate group. A second arcuate baffle is arranged outside the serpentine plate group. The serpentine plate group includes a plurality of serpentine plates and a second connecting rod. A second positioning sleeve is arranged on the second connecting rod. The serpentine plates pass through the second positioning sleeve and are connected to the second connecting rod. The corrugated plate group is connected with a second support plate. The serpentine plate group is fixed on the inner wall of the separation chamber through the second support plate. A second air baffle is arranged below the serpentine plate group.

[0012] Furthermore, a first inspection baffle is arranged on the first air baffle, a second inspection baffle is arranged on the second air baffle, and handles are arranged on both the first air baffle and the second air baffle.

[0013] Furthermore, the middle of the primary separation chamber and the secondary separation chamber is connected by a first head. When only the primary separation chamber is used, the gas will not flow into the secondary separation chamber, improving the separation efficiency. The first head adopts a spherical head.

[0014] Furthermore, an inspection hole is arranged at one end of the liquid storage chamber to facilitate the entry and exit of personnel during the maintenance and repair of the device. The other end of the liquid storage chamber is connected to another liquid storage chamber through a second head. A partition is arranged in the liquid storage chamber to prevent the gas from entering the liquid storage chamber through the communication pipe after entering from the gas inlet. The second head adopts a spherical crown head, and the spherical crown head has good pressure-bearing performance, improving the safety and reliability of the equipment.

[0015] Furthermore, a manhole is arranged on the separation chamber to facilitate the entry and exit of personnel during the maintenance and repair of the device.

[0016] Furthermore, third heads are arranged at both ends of the separation chamber, and the third heads adopt oval heads.

[0017] Furthermore, saddle supports are arranged on both sides of the separation container.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] The utility model provides a double-cylinder two-stage separation container, which provides a two-stage combined separation structure for the medium through a double chamber. According to the separation requirements of different application scenarios, the process can be adjusted to use only one stage of separation or both stages of separation simultaneously, so as to more conveniently cope with different working conditions, and can reduce the occupied space while achieving better separation effects. By adding a cyclone separation structure at the gas inlet, when the medium enters the container, through the strong centrifugal force generated by the cyclone, the gas-liquid mixture is quickly preliminarily separated. A down-mounted fixed wire mesh demister is installed at the gas outlet, which not only increases the effective filtering area of the wire mesh demister, enables tiny liquid droplets to be effectively intercepted, and further improves the separation effect; at the same time, compared with the traditional external design, it also effectively reduces the overall height of the equipment, making this separation container more advantageous in the three-dimensional layout application, and solving the requirements for high efficiency and small volume of equipment in the three-dimensional layout stage of the gas field gathering station yard.

[0020] Specifically, it effectively prevents the gas from directly entering the liquid storage cavity from the gas inlet, thus ensuring the continuity and stability of the separation process. The heads connecting the first-stage separation cavity, the second-stage separation cavity and the two liquid storage cavities adopt spherical crown heads and spherical heads, which have good pressure-bearing performance and sealing effect, and further enhance the safety and reliability of the equipment. This comprehensively strengthened structural design ensures the stable operation and long service life of the equipment under harsh working conditions. Brief Description of the Drawings

[0021] Figure 1 It is an overall schematic diagram of a double-cylinder two-stage separation container in an embodiment of the utility model.

[0022] Figure 2 It is a front view of the corrugated plate demister in an embodiment of the utility model.

[0023] Figure 3 It is a side view of the corrugated plate demister in an embodiment of the utility model.

[0024] Figure 4 It is a detailed view of the corrugated plate group in an embodiment of the utility model.

[0025] Figure 5 It is a front view of the gas rectifier in an embodiment of the utility model.

[0026] Figure 6 It is a side view of the gas rectifier in an embodiment of the utility model.

[0027] Figure 7 It is a detailed view of the serpentine plate group in an embodiment of the utility model.

[0028] In the figure, 1 is the gas inlet; 2 is the spiral separation structure; 3 is the vent; 4 is the corrugated plate mist eliminator; 4-1 is the corrugated plate group; 4-1-1 is the corrugated plate; 4-2 is the first connecting rod; 4-3 is the first positioning sleeve; 4-4 is the first support plate; 4-5 is the first gas baffle; 4-6 is the first arc-shaped baffle; 4-7 is the first inspection baffle; 5 is the gas rectifier; 5-1 is the serpentine plate group; 5-1-1 is the serpentine plate; 5-2 is the second connecting rod; 5-3 is the second positioning sleeve; 5-4 is the second support plate; 5-5 is the second gas baffle; 5-6 is the second arc-shaped baffle; 5-7 is the second inspection baffle; 6 is the manhole; 7 is the gas outlet; 8 is the wire mesh mist eliminator; 9 is the first head; 10 is the second head; 11 is the connecting pipe; 12 is the liquid outlet; 13 is the partition; 14 is the drain port; 15 is the saddle support; 16 is the inspection hole; 17 is the third head; 18 is the first valve. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0031] Embodiment 1

[0032] Refer to Figure 1, a double-barrel two-stage separation container, including a separation chamber, the separation chamber includes a primary separation chamber and a secondary separation chamber, the primary separation chamber and the secondary separation chamber are connected, and a liquid storage chamber is provided below each of the separation chambers; the separation chamber includes a gas inlet 1 and a gas outlet 7, and the gas inlet 1 is provided with a cyclone separation structure. The gas from the off-site gas collection pipeline enters the cyclone separation structure through the gas inlet 1. Under the centrifugal force, the gas enters above the primary separation chamber through the cyclone, and the liquid accumulates along the cyclone wall and drips to the bottom of the separation chamber, thus completing the preliminary gas-liquid separation. The inner wall of the separation chamber between the gas inlet 1 and the gas outlet 7 is successively provided with a corrugated plate mist eliminator 4 and a gas rectifier 5; the gas after the preliminary gas-liquid separation passes through the corrugated plate mist eliminator 4 for gas-liquid separation again. The separated liquid and solid particles are collected into the liquid storage chamber through the connecting pipe along the voids and gradually settle. The separated gas reaches the gas outlet 7, and a wire mesh mist eliminator 8 is provided at the gas outlet 7 and the wire mesh mist eliminator 8 is fixed in the cylinder before the gas outlet 7 in a downward-mounted manner to further remove the mist droplets entrained in the gas and realize the secondary gas-liquid separation.

[0033] The liquid storage chamber is communicated with the separation chamber through a plurality of connecting pipes 11. The bottom of the liquid storage chamber is provided with a liquid outlet 12 and a sewage outlet 14. The liquid and solid particles separated by the cyclone separation structure, the corrugated plate mist eliminator and the wire mesh mist eliminator are all converged into the liquid storage chamber through the connecting pipe 11. The liquid outlet 12 is always open, and when there is liquid entering the liquid storage chamber, it will flow out through the liquid outlet 12. The solid particles are converged at the bottom of the liquid storage chamber. When they accumulate to a certain extent, the sewage outlet 14 is opened to clean the solid particles. The primary separation chamber and the secondary separation chamber are connected by a first head 9 in the middle; an inspection hole 16 is provided at one end of the liquid storage chamber, and the other end of the liquid storage chamber is connected to another liquid storage chamber through a second head 10. A partition 13 is provided in the liquid storage chamber; a manhole 6 is provided on the separation chamber, an air vent 3 is provided on the outer wall above the separation chamber, and third heads 17 are provided at both ends of the separation chamber. The third heads 17 adopt oval heads, and the oval heads have good pressure-bearing performance, improving the safety and reliability of the equipment.

[0034] The gas outlet of the primary separation chamber and the gas inlet of the secondary separation chamber are connected by a pipeline, and a first valve 18 is provided on the pipeline. When only the primary separation is required in the application scenario separation requirements, the first valve 18 on the pipeline is closed, and the valve on the gas outlet is opened. The gas will only pass through the primary separation chamber for separation and go out from the gas outlet; when both the primary separation and the secondary separation are required in the application scenario separation requirements, the first valve 18 on the pipeline is opened, and the valve on the gas outlet is closed. After the gas passes through the primary separation chamber for separation, it comes to the gas inlet of the secondary separation chamber through the pipeline connected to the gas outlet of the primary separation chamber and enters the secondary separation chamber for separation and then is discharged from the gas outlet of the secondary separation chamber.

[0035] Example 2

[0036] Refer to Figures 1 to 7 Figures 1 to 7 , on the basis of Embodiment 1, the corrugated plate mist eliminator 4 includes a corrugated plate group 4-1, a first bow-shaped baffle 4-6 is arranged outside the corrugated plate group 4-1, the corrugated plate group 4-1 includes a plurality of corrugated plates 4-1-1 and a first connecting rod 4-2, and a first positioning sleeve 4-3 is arranged on the first connecting rod 4-2; the corrugated plates 4-1-1 pass through the first positioning sleeve 4-3 and are connected to the first connecting rod 4-2, the bottom of the corrugated plate group 4-1 is connected with a first support plate 4-4, the corrugated plate group 4-1 is fixed on the inner wall of the separation chamber through the first support plate 4-4, and a first air baffle 4-5 is arranged below the corrugated plate group 4-1; the corrugated plate group 4-1 is welded to the inner wall of the separation chamber through the first support plate 4-4 and the first bow-shaped baffle 4-6. The gas processed by the cyclone separation structure passes through the corrugated plate mist eliminator 4, first makes a curved movement in the channel formed in the corrugated plates 4-1-1, and the liquid droplets with a larger mass density collide with the corrugated plates 4-1-1 under the action of inertia, so that the liquid is separated from the air flow. The liquid and solid particles are collected along the voids through the connecting pipe 11 and enter the liquid storage chamber and gradually settle down.

[0037] The gas rectifier 5 includes a serpentine plate group 5-1, a second bow-shaped baffle 5-6 is arranged outside the serpentine plate group 5-1, the serpentine plate group 5-1 includes a plurality of serpentine plates 5-1-1 and a second connecting rod 5-2, and a second positioning sleeve 5-3 is arranged on the second connecting rod 5-2; the serpentine plates 5-1-1 pass through the second positioning sleeve 5-3 and are connected to the second connecting rod 5-2, the corrugated plate group 5-1 is connected with a second support plate 5-4, the serpentine plate group 5-1 is fixed on the inner wall of the separation chamber through the second support plate 5-4, and a second air baffle 5-5 is arranged below the serpentine plate group 5-1; the gas passing through the corrugated plate mist eliminator 4 enters the gas rectifier 5, and the gas consumes most of its momentum through the channel formed in the serpentine plates 5-1-1, avoiding the sharp air flow from making the liquid particles that could have settled be mixed in the gas eddy current. After separation, the stable gas passes through the wire mesh mist eliminator 8, and the wire mesh mist eliminator 8 further removes the mist droplets entrained in the gas. After realizing the secondary separation of gas and liquid, the gas flows out from the gas outlet 7.

[0038] A first inspection baffle 4-7 is arranged on the first air baffle 4-5, a second inspection baffle 5-7 is arranged on the second air baffle 5-5, handles are arranged on both the first air baffle 4-5 and the second air baffle 5-5, and saddle supports 15 are arranged on both sides of the separation container. The first air baffle 4-5 and the second air baffle 5-5 are arranged to prevent gas from escaping.

[0039] In the description of this specification, the descriptions referring to terms such as "some embodiments", "optionally", "further", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A double-barrel two-stage separation container, characterized in that, It includes a separation chamber, which consists of a primary separation chamber and a secondary separation chamber. The primary separation chamber and the secondary separation chamber are connected, and liquid storage chambers are provided below both the separation chambers; the separation chamber includes a gas inlet (1) and a gas outlet (7). A cyclone separation structure is provided at the gas inlet (1), and a valve is connected to the gas outlet (7). A corrugated plate mist eliminator (4) and a gas rectifier (5) are successively arranged on the inner wall of the separation chamber between the gas inlet (1) and the gas outlet (7); a wire mesh mist eliminator (8) is provided at the gas outlet (7), and the wire mesh mist eliminator (8) is fixed in the cylinder before the gas outlet (7) in a bottom-mounted manner; the gas outlet (7) of the primary separation chamber and the gas inlet (1) of the secondary separation chamber are connected by a pipeline, and a first valve (18) is provided on the pipeline.

2. The double-barrel two-stage separation container according to claim 1, wherein The liquid storage chamber is communicated with the separation chamber through a plurality of connecting pipes (11), and a liquid outlet (12) and a sewage outlet (14) are provided at the bottom of the liquid storage chamber.

3. A double-barrel two-stage separation container according to claim 1, characterized in that, The corrugated plate mist eliminator (4) includes a corrugated plate group (4-1). A first bow-shaped baffle (4-6) is arranged outside the corrugated plate group (4-1). The corrugated plate group (4-1) includes a plurality of corrugated plates (4-1-1) and a first connecting rod (4-2). A first positioning sleeve (4-3) is arranged on the first connecting rod (4-2); the corrugated plates (4-1-1) pass through the first positioning sleeve (4-3) and are connected to the first connecting rod (4-2). The bottom of the corrugated plate group (4-1) is connected with a first support plate (4-4), and the corrugated plate group (4-1) is fixed on the inner wall of the separation chamber through the first support plate (4-4). A first gas baffle (4-5) is arranged below the corrugated plate group (4-1).

4. A double-barrel two-stage separation container according to claim 1, characterized in that, The gas rectifier (5) includes a serpentine plate group (5-1). A second bow-shaped baffle (5-6) is arranged outside the serpentine plate group (5-1). The serpentine plate group (5-1) includes a plurality of serpentine plates (5-1-1) and a second connecting rod (5-2). A second positioning sleeve (5-3) is arranged on the second connecting rod (5-2); the serpentine plates (5-1-1) pass through the second positioning sleeve (5-3) and are connected to the second connecting rod (5-2). The serpentine plate group (5-1) is connected with a second support plate (5-4), and the serpentine plate group (5-1) is fixed on the inner wall of the separation chamber through the second support plate (5-4). A second gas baffle (5-5) is arranged below the serpentine plate group (5-1).

5. A double-barrel two-stage separation container according to claim 3 or 4, characterized in that, A first inspection baffle (4-7) is arranged on the first gas baffle (4-5), a second inspection baffle (5-7) is arranged on the second gas baffle (5-5), and handles are arranged on both the first gas baffle (4-5) and the second gas baffle (5-5).

6. A double-barrel two-stage separation container according to claim 1, characterized in that, The primary separation chamber and the secondary separation chamber are connected by a first head (9) in the middle.

7. A double-barrel two-stage separation container according to claim 1, wherein, An inspection hole (16) is arranged at one end of the liquid storage chamber. The other end of the liquid storage chamber is connected to another liquid storage chamber through a second head (10), and a partition (13) is arranged in the liquid storage chamber.

8. A double-barrel two-stage separation container according to claim 1, characterized in that, A manhole (6) is arranged on the separation chamber, and a vent port (3) is arranged on the outer wall above the separation chamber.

9. A double-barrel two-stage separation container according to claim 1, characterized in that, Third heads (17) are arranged at both ends of the separation chamber.

10. A double-barrel two-stage separation container according to claim 1, characterized in that, Saddle supports (15) are provided on both sides of the separation container.

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