Novel oil-water and gas-liquid separation device adopting particle size reconstruction structure
By adopting a particle size reconstruction structure in the oil-gas-liquid separation device and using the inertial separation of the spiral flow channel and the positive-rotating bent pipe, the precise separation of oil droplets of different particle sizes is achieved, and the problems of poor separation effect and large space occupation in traditional devices are solved, the separation efficiency and purity are improved, and the production cost and interruption risk are reduced.
Patent Information
- Application Number
- CN202422196321.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-09
AI Technical Summary
Traditional oil and gas-liquid separation devices have poor separation effects on small-particle size oil droplets and tiny bubbles, resulting in the separation of liquids or gases still containing a lot of impurities, and the device structure design requires a large installation space, which increases the cost of production sites and layout difficulty.
A new oil-water and gas-liquid separation device adopting a particle size reconstruction structure includes a spiral flow channel front cavity, a spiral flow channel and a positive spiral bend pipe. Through inertial separation, large and small particle size oil droplets are gathered on different sides of the device, and combined with the inverted cone and overflow port design, the oil phase is achieved stably transported and efficiently separated.
It improves separation efficiency and purity, enhances oil recovery, reduces device volume, saves installation space, ensures production continuity and stability, and reduces the risks of production interruptions and quality fluctuations.
Smart Images
Figure CN223060919U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of oil-gas separation, and particularly relates to a novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure. Background Art
[0002] With the rapid development of industry, the requirements for the efficiency and effect of oil-gas and oil-water separation are increasing day by day; in oil-gas exploitation and industrial production, it is often necessary to efficiently and accurately separate oil-water and gas-liquid mixtures to meet the production process and environmental protection requirements. Traditional separation methods and devices gradually show some limitations when dealing with complex multiphase fluid mixtures.
[0003] Traditional oil-gas-liquid separation devices have poor separation effects on small-sized oil droplets and microbubbles, resulting in more impurities remaining in the separated liquid or gas; in some traditional gravity separation devices, small-sized oil droplets are difficult to quickly aggregate and separate, thus affecting the purity of the separated oil quality. And due to the limitation of the structure design, a relatively large installation space is often required, increasing the cost of the production site and the layout difficulty.
[0004] Therefore, those skilled in the art have proposed a novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure to solve the problems raised in the background art. Summary of the Utility Model
[0005] In order to solve the above technical problems, the utility model provides a novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure to solve the problems that in the prior art, the oil-gas-liquid separation device has poor separation effects on small-sized oil droplets and microbubbles, resulting in more impurities remaining in the separated liquid or gas, small-sized oil droplets are difficult to quickly aggregate and separate, thus affecting the purity of the separated oil quality, and due to the structure design, a relatively large installation space is required, increasing the production site cost and the layout difficulty.
[0006] A novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure includes a spiral flow channel front cavity and a hydrocyclone. A coalescence component is arranged between the spiral flow channel front cavity and the hydrocyclone, and the spiral flow channel front cavity is an annular cavity.
[0007] The coalescence component includes a plurality of spiral flow channels connected to the bottom surface of the spiral flow channel front cavity and a positive swirl elbow connected between the spiral flow channels and the hydrocyclone. The positive swirl elbow sends the light oil phase into the inner side of the hydrocyclone from the inner side of the elbow.
[0008] With the above technical solution, since the spiral flow channel is a spiral structure and the fluid has both axial velocity and tangential velocity, the fluid with a higher density converges on the outer wall surface, and the fluid with a lower density converges on the inner wall surface. When oil droplets of different particle sizes pass through the right-handed elbow pipe, due to the inertial separation effect, the large-particle-size oil droplets gather and flow on the outer side of the right-handed elbow pipe, and the small-particle-size oil droplets gather on the inner side of the right-handed elbow pipe, realizing the rearrangement of large- and small-particle-size oil droplets.
[0009] Preferably, the front cavity of the spiral flow channel adopts an axial inlet.
[0010] Preferably, a plurality of connecting grooves are provided on the bottom surface of the front cavity of the spiral flow channel, and the connecting grooves are connected to the spiral flow channel.
[0011] With the above technical solution,
[0012] Preferably, a bottom flow port is provided at one end of the hydrocyclone.
[0013] Preferably, an inverted cone is provided on the bottom wall of the hydrocyclone, and the inverted cone extends below the outlet of the right-handed elbow pipe.
[0014] With the above technical solution, the inverted cone provided on the bottom wall of the hydrocyclone is beneficial to the convergence of the oil phase in the central axis region, further improving the separation effect and discharge efficiency of the oil phase. In the oil-water separation, the oil phase can be separated more quickly, improving the processing efficiency and reducing the processing cost.
[0015] Preferably, an overflow port is provided on the upper surface of the hydrocyclone.
[0016] With the above technical solution, it has a stable conveying effect on the coalesced oil phase. The coalesced oil phase is conveyed to the vicinity of the central axis of the hydrocyclone through the right-handed elbow pipe. The oil phase is more likely to form a stable oil core and discharge from the overflow port. The spiral flow channel connected to the right-handed elbow pipe is very beneficial to the coalescence and separation of the oil phase, especially small-particle-size oil droplets. The stable conveying and separation processes can ensure the continuity and stability of production, and reduce production interruption and quality fluctuations caused by unstable separation.
[0017] Preferably, the overflow port is located at the central axis of the hydrocyclone.
[0018] Preferably, the number of the spiral flow channels and the right-handed elbow pipes is four.
[0019] Compared with the prior art, the present utility model has the following beneficial effects:
[0020] 1. The utility model realizes the precise separation of oil droplets with different particle sizes by setting a spiral flow channel front cavity, a spiral flow channel and a positive rotation elbow. Large particle size oil droplets gather on the outer side of the positive rotation elbow under the action of inertia, and small particle size oil droplets gather on the inner side, greatly improving the separation efficiency and purity. It can more effectively separate tiny oil droplets from complex oil-water mixtures, improve the oil recovery rate and oil product quality, and significantly reduce the space volume of the device, making its structure more compact, saving installation space, facilitating layout and installation in a limited site, better adapting to site conditions, reducing the floor area of the equipment, and improving the space utilization rate of the platform.
[0021] 2. The utility model has a stable conveying effect on the coalesced oil phase by setting a positive rotation elbow, an inverted cone and an overflow port. The coalesced oil phase is conveyed to the near central axis of the hydrocyclone through the positive rotation elbow, and the oil phase is more likely to form a stable oil core and discharge from the overflow port. The connection of the spiral flow channel to the positive rotation elbow is very beneficial to the coalescence and separation of the oil phase, especially small particle size oil droplets. The stable conveying and separation process can ensure the continuity and stability of production, and reduce production interruption and quality fluctuations caused by unstable separation. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 is a schematic diagram of the lower perspective structure of the utility model;
[0024] Figure 3 is a schematic diagram of the upper perspective structure of the utility model;
[0025] Figure 4 is Figure 3 the schematic diagram of the A-A sectional structure in
[0026] Figure 5 is the particle size distribution diagram of oil droplets at the positive rotation elbow.
[0027] In the figure:
[0028] 1. Spiral flow channel front cavity; 2. Spiral flow channel; 3. Hydrocyclone; 4. Positive rotation elbow; 5. Underflow port; 6. Inverted cone; 7. Overflow port. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] The following further describes in detail the embodiments of the utility model in conjunction with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.
[0030] Example 1: As shown in the attached Figure 1 to the attached Figure 5Shown: The present utility model provides a novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure, which includes a spiral flow channel front cavity 1 and a hydrocyclone 3. A coalescing component is provided between the spiral flow channel front cavity 1 and the hydrocyclone 3. The spiral flow channel front cavity 1 is an annular cavity;
[0031] The coalescing component includes a plurality of spiral flow channels 2 connected to the bottom surface of the spiral flow channel front cavity 1 and a positive swirl elbow 4 connected between the spiral flow channels 2 and the hydrocyclone 3. The positive swirl elbow 4 sends the light oil phase into the inner side of the hydrocyclone 3 from the inner side of the elbow. The number of the spiral flow channels 2 and the positive swirl elbow 4 is four. Since the spiral flow channels 2 are spiral structures, and the fluid has both axial velocity and tangential velocity, the fluid with a large density converges on the outer wall surface, and the fluid with a small density converges on the inner wall surface. When oil droplets with different particle sizes pass through the positive swirl elbow 4, under the action of inertial separation, the large particle size oil droplets gather and flow on the outer side of the positive swirl elbow 4, and the small particle size oil droplets gather on the inner side of the positive swirl elbow 4, realizing the rearrangement of large and small particle size oil droplets.
[0032] The spiral flow channel front cavity 1 adopts an axial inlet. By installing a conduit on the circumferential side of the spiral flow channel front cavity 1, the oil liquid is transported into the front cavity. A plurality of connecting grooves are provided on the bottom surface of the spiral flow channel front cavity 1, and the connecting grooves are connected to the spiral flow channels 2. One end of the hydrocyclone 3 is provided with an underflow port 5, and a discharge pipe is connected to the outer wall of the underflow port 5.
[0033] As can be seen from the above, the inlet mode of the spiral flow channel front cavity 1 is axial, which has the advantages of small space volume and compact structure. The oil-water mixture axially enters the spiral flow channel front cavity 1 from the top inlet of the device, enters the spiral flow channels 2 from the spiral flow channel front cavity 1, and the end of the spiral flow channels 2 is connected to the hydrocyclone 3 through a section of positive swirl elbow 4. The oil-water mixture enters the internal swirl cavity of the hydrocyclone 3 from the positive swirl elbow 4 and starts to separate in the swirl cavity. The water phase is the heavy phase, and the oil phase is the light phase. The water phase moves along the side wall towards the underflow port 5 and is discharged from the pipeline externally connected to the side wall of the underflow port 5.
[0034] By setting the spiral flow channel front cavity 1, the spiral flow channels 2 and the positive swirl elbow 4, the device realizes the precise separation of oil droplets with different particle sizes. The large particle size oil droplets gather on the outer side of the positive swirl elbow 4 under the action of inertia, and the small particle size oil droplets gather on the inner side, greatly improving the separation efficiency and purity. It can more effectively separate the tiny oil droplets from the complex oil-water mixture, improve the oil recovery rate and the quality of oil products, and significantly reduce the space volume of the device, making its structure more compact, saving the installation space, being convenient for layout and installation in a limited site, being able to better adapt to the site conditions, reducing the floor area of the equipment, and improving the space utilization rate of the platform.
[0035] Embodiment 2: On the basis of Embodiment 1, an inverted cone 6 is provided on the bottom wall of the hydrocyclone 3, and the inverted cone 6 extends below the outlet of the positive swirl elbow 4. An overflow port 7 is provided on the upper surface of the hydrocyclone 3, and the overflow port 7 is located at the central axis of the hydrocyclone 3.
[0036] As can be seen from the above, there is an inverted cone 6 inside the hydrocyclone 3. The oil phase is more easily converged in the central axis region through the inverted cone 6 and discharged from the overflow port 7. The positive swirl elbow 4 at the connection of the hydrocyclone 3 sends the light oil phase into the inner side of the swirl chamber from the inner side of the elbow.
[0037] The positive swirl elbow 4 has a stable conveying effect on the coalesced oil phase. The coalesced oil phase is conveyed to the near central axis of the hydrocyclone 3 through the positive swirl elbow 4. The oil phase is more likely to form a stable oil core and be discharged from the overflow port 7. The spiral flow channel 2 connected to the positive swirl elbow 4 is very beneficial to the coalescence and separation of the oil phase, especially small particle size oil droplets. The stable conveying and separation process can ensure the continuity and stability of production and reduce production interruption and quality fluctuations caused by unstable separation.
[0038] Example 3: Simulations were carried out on non-viscous oil and non-viscous oil small particle size oil droplet conditions to verify the performance and advantages of the hydrocyclone 3 in the separation device for coalescing and separating small particle size oil droplets. Normal particle size and small particle size oil droplets were input at the front cavity 1 of the spiral flow channel. The small particle size oil droplets gathered at the underflow port 5, and the large particle size oil droplets gathered at the top of the central axis of the inverted cone 6.
[0039] Example 4: Simulations were carried out under viscous oil and non-viscous oil conditions to verify the performance and advantages of the hydrocyclone 3 in the separation device for separating viscous oil. The oil phase volume fraction at the top of the central axis of the inverted cone 6 is much larger than the oil phase volume fraction at the underflow port 5.
[0040] The embodiments of the present utility model are given for the purposes of illustration and description. Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.
[0041] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; 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 or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0042] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. In the accompanying drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved, and other structures may refer to the general design. Without conflict, the same embodiment and different embodiments of the present utility model may be combined with each other.
[0043] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described 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 principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure, characterized in that: It includes a spiral flow channel front cavity (1) and a cyclone (3). A coalescing component is provided between the spiral flow channel front cavity (1) and the cyclone (3). The spiral flow channel front cavity (1) is an annular cavity; The coalescing component includes a number of spiral flow channels (2) connected to the bottom surface of the spiral flow channel front cavity (1), and a positive spiral elbow (4) connected between the spiral flow channel (2) and the cyclone (3). The positive spiral elbow (4) feeds the light oil phase into the inside of the cyclone (3) from the inside of the elbow.
2. The novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure according to claim 1, characterized in that: The spiral flow channel front cavity (1) adopts an axial inlet.
3. The novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure according to claim 1, characterized in that: A number of connecting grooves are provided on the bottom surface of the spiral flow channel front cavity (1), and the connecting grooves are connected to the spiral flow channels (2).
4. The novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure according to claim 1, characterized in that: One end of the cyclone (3) is provided with an underflow port (5).
5. The novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure as described in claim 4, wherein: An inverted cone (6) is provided on the bottom wall of the cyclone (3), and the inverted cone (6) extends below the outlet of the positive spiral elbow (4).
6. The novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure according to claim 5, wherein: An overflow port (7) is provided on the upper surface of the cyclone (3).
7. The novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure according to claim 6, wherein: The overflow port (7) is located at the central axis of the cyclone (3).
8. The novel oil-water and gas-liquid separation device adopting a particle size reconstruction structure according to claim 1, characterized in that: The number of the spiral flow channels (2) and the positive spiral elbows (4) is four.