Gas defoaming device for oil-liquid separation of shale oil with high wax content
By designing a multi-layered gas foam removal device, including a blind type, a baffle plate type and a wire mesh type foam separation structure, the problem of traditional foam removal devices being difficult to remove mist in high wax shale oil is solved, and efficient gas purification and reliable operation of the equipment is achieved.
Patent Information
- Application Number
- CN202421607988.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-09
AI Technical Summary
Traditional blind and wire mesh gas defoamers are difficult to effectively remove mist below 5 μm during the separation of oil, gas and liquid with high wax shale, and the wire mesh is easily blocked by paraffin, causing the equipment to hold down.
A gas foam removal device including a louver-type foam separation structure, a baffle-type foam separation structure and a wire mesh foam separation structure is designed to gradually remove mist in the gas through a multi-layer structure separation method, and the separation elements are conveniently cleaned and replaced by a detachable cylinder structure.
Effective removal of smaller and tiny mists in the gas is achieved, the problem of wire mesh clogging is avoided, and the purity of gas purification and the reliability of equipment are improved.
Smart Images
Figure CN222900610U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of gas-liquid separation, and in particular to a gas defoaming device for gas-liquid separation of high-wax shale oil. Background Art
[0002] Shale oil refers to a type of oil resource rich in organic matter contained in shale formations, which is mainly composed of shale. It has huge potential for development, and this huge potential is accelerating into production. During the development of shale oil, gas-liquid separation is required, and gas purification must meet the standards before it can be exported.
[0003] In the separation process of the traditional shutter-type demister, the gas is separated into many single-strand channels after passing through the separation element. Under the action of inertia, the droplets and mist collide with the separation element to form a liquid film, which moves forward with the airflow to the bend and is separated. However, it is difficult to remove mist below 5μm in the gas, and the purification standard cannot be met. In the separation process of the wire mesh demister, when the gas rises through the wire mesh at a certain speed, due to the inertia of the rising mist, the mist collides with the wire mesh filaments and is attached to the surface of the filaments. Although it can effectively remove mist below 5μm, high-wax shale oil contains a large amount of paraffin, which is very easy to clog the wire mesh, causing the equipment to be pressurized and affecting normal operation.
[0004] In order to effectively solve this problem, a gas defoaming device for gas-liquid separation of high-wax shale oil is proposed. Utility Model Content
[0005] The utility model aims to provide a gas defoaming device for high-wax shale oil gas-liquid separation, which can effectively solve the problem of paraffin clogging the wire mesh defoamer in high-wax shale oil gas-liquid separation.
[0006] The utility model is achieved in this way:
[0007] The utility model provides a gas defoaming device for high-wax shale oil gas-liquid separation, characterized in that it comprises a cylinder, the bottom and top of the cylinder are respectively provided with a gas inlet and a gas outlet, and a shutter type foam separation structure, a baffle type foam separation structure, and a wire mesh type foam separation structure are sequentially arranged in the cylinder from bottom to top, and the three are arranged at intervals.
[0008] According to the above technical solution, the shutter-type foam separation structure is an inclined baffle fixed inside the cylinder at a certain angle along the circumferential direction of the cylinder.
[0009] According to the above technical solution, the baffle-type foam separation structure includes multiple rows of baffles arranged at bent angles, the pointed corners of the baffles face upward, and adjacent rows of baffles are staggered.
[0010] According to the above technical solution, the center line of the baffle is arranged parallel to the center line of the cylinder axis.
[0011] According to the above technical solution, the wire mesh foam separation structure includes a wire mesh, a grid forming a wire mesh block and a supporting device for fixing the wire mesh block.
[0012] According to the above technical solution, the cylinder is an upper and lower separated structure, which includes an upper cylinder and a lower cylinder, which are separated from the baffle type foam separation structure and the wire mesh type foam separation structure, and the upper cylinder and the lower cylinder are connected by a cylinder flange.
[0013] According to the above technical solution, the lower end of the lower cylinder is a cone structure, which is connected to the separator through the lower end flange.
[0014] According to the above technical solution, the upper end of the upper cylinder is connected to the upper head flange through a connecting pipe, and the connecting pipe and the upper head flange are connected through a reducing cone structure.
[0015] The beneficial effects of the utility model are:
[0016] 1. The utility model is provided with a shutter-type foam separation structure, a baffle-type foam separation structure, and a wire mesh-type foam separation structure in sequence, wherein the shutter-type foam separation structure plays the following role: when the gas with mist rises at a certain speed, it is pushed to the inclined baffle surface by pressure, the upward resistance of the gas increases, and the mist in the gas is adsorbed on the baffle surface, which can separate large particles of impurities in the gas; when it reaches the baffle-type foam separation structure, the gas after the first separation is blocked by the baffle when passing through, and the gas flow direction is changed, and the gas disperses and rises from the gaps between the baffles. When it rubs against the baffle, the mist in the gas is adsorbed On the surface of the baffle, the mist in the gas is further separated. The third stage is a wire mesh foam separation structure. The gas separated by the two stages collides with the filaments, and the remaining mist in the gas is attached to the surface of the filaments. The diffusion of the mist on the surface of the filaments and the gravity sedimentation of the mist make the mist form larger droplets that flow along the filaments to the intersection of the two filaments. The wettability of the filaments, the surface tension of the liquid and the capillary action of the filaments make the droplets larger and larger until the aggregated droplets are large enough that the gravity generated by themselves exceeds the combined force of the rising force of the gas and the surface tension of the liquid. The droplets then separate and fall from the filaments, and the remaining smaller and tiny liquid foam in the gas can be completely separated.
[0017] The device has less gas impurities and high purity, which solves the problem of gas defoaming clogging the wire mesh in high-wax shale oil gas-liquid separation equipment;
[0018] 2. The utility model device is connected to the separation equipment through the lower end flange, the upper end flange is connected to the external pipeline, and the middle flange of the cylinder is connected, which is convenient for cleaning and replacement of the separation element. It can be disassembled and assembled according to the composition of impurities contained in the gas and the requirements for gas purification accuracy, and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 This is a schematic structural diagram of a gas defoaming device provided in an embodiment of the utility model.
[0021] Figure 2 A schematic diagram of gas flow during use of the gas defoaming device provided in an embodiment of the utility model.
[0022] Figure 3 The combined separator used in a shale oil development project uses a gas defoamer for gas-liquid separation of high-wax shale oil at the two gas outlets.
[0023] The symbols in the attached drawings correspond to the following: 1-upper head flange; 2-pipe connection; 3-head; 4-wire mesh; 5-cylinder flange; 6-cylinder; 7-baffle; 8-baffle; 9-lower end flange. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0027] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0028] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0031] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.
[0032] like Figure 1-3As shown, this embodiment provides a gas defoaming device for gas-liquid separation of high-wax shale oil, including a cylinder 6, wherein a gas inlet and a gas outlet are respectively provided at the bottom and the top of the cylinder 6, and a louver-type foam separation structure, a baffle-type foam separation structure, and a wire mesh-type foam separation structure are sequentially provided in the cylinder 6 from bottom to top, and the three are arranged at intervals.
[0033] The shutter-type foam separation structure is provided with an inclined baffle 8 fixed at a certain angle inside the cylinder along the circumferential direction of the cylinder, wherein the inclined baffle 8 is set at an angle of 60° with the horizontal direction. When the gas with mist rises at a certain speed, it is pushed to the inclined baffle surface by the pressure, the upward resistance of the gas increases, and the mist in the gas is adsorbed on the baffle surface, so that large particles of impurities in the gas can be separated.
[0034] The baffle-type foam separation structure includes multiple rows of baffles 7 arranged at a bent angle, and the baffles 7 are bent plates arranged in a centrally symmetrical manner, and their center lines are arranged parallel to the center line of the cylinder axis. The sharp corners of the baffles 7 face upward, and the adjacent rows of baffles are arranged in a staggered manner. When the gas passes through the baffle-type foam separation structure, the gas flow direction changes due to the obstruction of the baffles when the gas passes through the first separation, and disperses and rises from the gaps between the baffles. When friction occurs with the baffles, the mist in the gas is adsorbed on the surface of the baffles, and the mist in the gas is further separated.
[0035] The wire mesh foam separation structure includes a wire mesh 6, a wire mesh block composed of a grid and a supporting device for fixing the wire mesh block. The gas separated by two paths collides with the filaments, and the remaining mist in the gas is attached to the surface of the filaments. The diffusion of the mist on the surface of the filaments and the gravity sedimentation of the mist make the mist form larger droplets that flow along the filaments to the intersection of the two filaments. The wettability of the filaments, the surface tension of the liquid and the capillary action of the filaments make the droplets larger and larger until the aggregated droplets are large enough that the gravity generated by themselves exceeds the combined force of the rising force of the gas and the surface tension of the liquid. The droplets then separate and fall from the filaments, and the remaining smaller and tiny droplets in the gas can be completely separated.
[0036] In this embodiment, the cylinder is an upper and lower separated structure, which includes an upper cylinder and a lower cylinder, and the two are separated from the baffle type foam separation structure and the wire mesh type foam separation structure, which is convenient for cleaning and replacement of the separation element. The upper cylinder and the lower cylinder are connected by a cylinder flange 5. The upper end of the upper cylinder is connected to the upper head flange 1 through a connecting pipe 2, and the connecting pipe 2 and the upper head flange 1 are connected by a reducing cone structure. The lower end of the lower cylinder is a cone structure, which is connected to the separator through the lower end flange 9. The utility model device is connected to the separation equipment through the lower end flange, the upper end flange is connected to the external pipeline, and the middle section flange of the cylinder is connected, which is convenient for cleaning and replacement of the separation element. It can be disassembled and assembled according to the composition of impurities contained in the gas and the requirements for gas purification accuracy, and has strong applicability.
[0037] The embodiments described above are part of the embodiments of the utility model, but not all of the embodiments. The detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model claimed for protection, but only represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
Claims
1. A gas defoaming device for gas-liquid separation of high wax shale oil, characterized in that: It comprises a cylinder, wherein a gas inlet and a gas outlet are respectively arranged at the bottom and the top of the cylinder, and a shutter type foam separation structure, a baffle type foam separation structure and a wire mesh type foam separation structure are arranged in sequence from bottom to top in the cylinder, and the three are arranged at intervals.
2. The gas defoaming device for gas-liquid separation of high wax shale oil according to claim 1, characterized in that: The shutter-type foam separation structure is an inclined baffle plate which is fixed inside the cylinder at a certain angle and arranged along the circumferential direction of the cylinder.
3. The gas defoaming device for gas-liquid separation of high wax shale oil according to claim 1 or 2, characterized in that: The baffle-type foam separation structure comprises a plurality of rows of baffles arranged at bent angles, the pointed corners of the baffles facing upward, and adjacent rows of baffles are arranged in a staggered manner.
4. The gas defoaming device for gas-liquid separation of high wax shale oil according to claim 1 or 2, characterized in that: The center line of the baffle is arranged parallel to the center line of the cylinder axis.
5. The gas defoaming device for gas-liquid separation of high wax shale oil according to claim 4, characterized in that: The wire mesh type foam separation structure comprises a wire mesh, a grid forming a wire mesh block and a supporting device for fixing the wire mesh block.
6. The gas defoaming device for gas-liquid separation of high wax shale oil according to claim 1 or 2, characterized in that: The cylinder is a top-bottom separation structure, which includes an upper cylinder and a lower cylinder, which are separated from a baffle-type foam separation structure and a wire mesh-type foam separation structure, and the upper cylinder and the lower cylinder are connected via a cylinder flange.
7. The gas defoaming device for gas-liquid separation of high wax shale oil according to claim 6, characterized in that: The lower end of the lower cylinder is a cone structure, which is connected to the separator through a lower end flange.
8. The gas defoaming device for gas-liquid separation of high wax shale oil according to claim 6, characterized in that: The upper end of the upper cylinder is connected to an upper head flange via a connecting pipe, and the connecting pipe and the upper head flange are connected via a reducing cone structure.