Multiple three-phase separator

Abstract

The invention relates to a multiple three-phase separator, which comprises: a pressure vessel equipment shell, which comprises a cylinder, one side of which is provided with a medium inlet; the spiral separation assembly is provided with a spiral downward medium flowing channel; the flow stabilizing and liquid blocking assembly comprises an annular flow stabilizing and liquid blocking plate and a plurality of supporting rib plates fixed to the inner wall of the barrel in the circumferential direction of the barrel, and the annular flow stabilizing and liquid blocking plate is provided with a first medium circulation hole; the coalescence and separation assembly comprises a cover plate, a bottom supporting plate, four side supporting plates and a plurality of sets of modular demister net blocks, the arc-shaped side of the cover plate is fixed to the inner wall of the barrel, and the four side supporting plates are each provided with a plurality of second medium circulation holes; a plurality of groups of modular defoaming net blocks are vertically placed in a box body consisting of the cover plate, the bottom supporting plate and the four side supporting plates; and the wire mesh defoaming assembly is positioned above the spiral separation assembly. According to the multiple three-phase separator, multiple separation assemblies are integrated, and accurate and efficient separation of oil, gas and water can be achieved.

Description

Technical Field

[0001] The present disclosure relates to the field of oil-gas-water three-phase separation devices used in petrochemical separation equipment, and more specifically, to a multiple three-phase separator. Background Art

[0002] In petrochemical engineering, the separation of oil, gas and water is crucial. With the development of the global petrochemical industry, traditional separation technologies and devices have exposed many defects. For example, the facilities are old and the technology is single, which cannot meet the production and environmental protection requirements. In addition, incomplete separation will also lead to equipment corrosion, product quality decline and energy waste. In particular, traditional technologies are more difficult to deal with problems such as crude oil deterioration and increased water content caused by improper separation of oil, gas and water in the middle and late stages of oil field exploitation. At the same time, environmental protection requirements are becoming stricter, and the industry is under great pressure to save energy and reduce emissions. The development of efficient and advanced separation technologies is imminent. In the future, three-phase separation equipment will develop in the direction of high efficiency, precision, green and low consumption, integrated miniaturization and new material application. Therefore, the development of new multiple three-phase separators is of great significance to make up for technical shortcomings and promote industry upgrading.

[0003] Therefore, how to provide an integrated three-phase separator that can achieve accurate and efficient separation of oil, gas and water is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0004] In view of this, the present disclosure provides a multiple three-phase separator, which integrates multiple separation components and can achieve accurate and efficient separation of oil, gas and water.

[0005] To achieve the above-mentioned purpose, the present disclosure provides a multiple three-phase separator, which includes: a pressure vessel equipment shell, which includes a cylinder, and a medium inlet is opened on one side of the cylinder; a spiral separation component, which is installed in the cylinder and has a spiral downward medium flow channel connected to the medium inlet; a flow stabilizing liquid baffle component, which is located in the cylinder and includes an annular flow stabilizing liquid baffle plate located below the spiral separation component and a plurality of supporting ribs fixed on the inner wall of the cylinder along the circumference of the cylinder, the annular flow stabilizing liquid baffle plate is fixed on the plurality of supporting ribs and has a first medium inlet; a coalescence and separation component, which is installed in the cylinder, located below the steady flow and liquid blocking component, and includes an arc-shaped cover plate, a bottom support plate, four side support plates spaced apart from each other, and a plurality of modular foam breaking net blocks, the arc-shaped side of the cover plate is fixed to the inner wall of the cylinder, the four side support plates are each provided with a plurality of second medium flow holes, and the plurality of modular foam breaking net blocks are vertically placed in a box consisting of the cover plate, the bottom support plate and the four side support plates; and a wire mesh defoaming component, which is installed in the cylinder and located above the spiral separation component.

[0006] Optionally, the pressure vessel equipment shell also includes an upper head arranged at the top end of the cylinder, a lower head arranged at the bottom end of the cylinder, and a support skirt arranged below the lower head, wherein an oil outlet is provided on the other side of the cylinder, the upper head is provided with a gas outlet, the lower head is provided with a lower head hole, and the support skirt is provided with a condensate outlet, and the lower head hole is connected to the condensate outlet through a connecting pipe located in the support skirt.

[0007] Optionally, the oil outlet is located below the cover plate, opposite to the two longer side support plates among the four side support plates, and adjacent to the arc-shaped side of the cover plate; the two shorter side support plates among the four side support plates of the box body of the coalescing separation assembly are each tightly connected to the inner wall of the cylinder body they face.

[0008] Optionally, the spiral separation assembly includes a steering elbow, a wear plate, a retaining ring and an arc-shaped baffle, wherein the steering elbow is fixed on the inner wall of the cylinder and is connected to the medium inlet, the wear plate is fitted on the inner wall of the cylinder facing the outlet of the steering elbow, the arc-shaped outer side of the arc-shaped baffle is fixed on the inner wall of the cylinder, and the retaining ring is fixedly attached to the arc-shaped inner side of the arc-shaped baffle, and the arc-shaped baffle and the retaining ring are both configured to extend spirally downward in the axial direction of the cylinder so that the arc-shaped baffle and the retaining ring together form a spiral downward medium flow channel.

[0009] Optionally, the size of the first medium flow hole is configured so that the liquid medium separated by the spiral separation component first flows onto the annular flow stabilizing liquid baffle plate and then flows through the first medium flow hole.

[0010] Optionally, a radius of the first medium flow hole is smaller than an inner radius of the arc segment of the retaining ring.

[0011] Optionally, the radius of the first medium circulation hole is half of the inner radius of the arc segment of the retaining ring.

[0012] Optionally, the coalescence and separation assembly further comprises a pressure cover, which is pressed on the cover plate and is located directly above the box where the multiple groups of modular foam breaking net blocks are located.

[0013] Optionally, the gland is detachably connected to the cover plate via fasteners.

[0014] Optionally, the wire mesh defoaming assembly includes a multi-layer wire mesh block and a support structure for fixing and supporting the multi-layer wire mesh block, and the support structure is fixed on the inner wall of the cylinder.

[0015] Compared with the prior art, the multiple three-phase separator provided by the present disclosure has at least the following advantages:

[0016] Beneficial effects:

[0017] Compared with the separation facilities with single separation components and separation technologies in the prior art, the multiple three-phase separator innovatively integrates the wire mesh defoaming component, the spiral separation component, the steady flow liquid blocking component and the coalescence separation component from top to bottom in a reasonable manner in the same cylinder, and accordingly integrates the spiral centrifugal separation technology realized by the spiral separation component, the coalescence separation technology realized by the coalescence separation component and the inertial diffusion capillary separation technology realized by the wire mesh defoaming component in the same cylinder, and a steady flow liquid blocking component is added between the spiral separation component and the coalescence separation component to buffer and stabilize the high-speed swirling liquid to avoid large liquid level fluctuations in the lower oil and water separation space, thereby not only realizing accurate and efficient separation of oil, gas and water, meeting environmental protection requirements, improving operating efficiency and shortening separation time, but also the integrated miniaturized design of the multiple three-phase separator also greatly reduces the overall size of the separator and reduces the floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present disclosure, the embodiments of the present disclosure will be further illustrated and described according to the following drawings, which are only used to more conveniently and specifically describe the embodiments of the present disclosure rather than to limit the present disclosure. In the drawings:

[0019] Figure 1 is a schematic diagram of the overall structure of a multiple three-phase separator according to an embodiment of the present disclosure;

[0020] Figure 2A It is a front view of a spiral separation assembly and a flow-stabilizing liquid-blocking assembly according to an embodiment of the present disclosure;

[0021] Figure 2B is a top view of a spiral separation assembly and a flow-stabilizing liquid-blocking assembly according to an embodiment of the present disclosure;

[0022] Figure 2C is a top view of a retaining ring of a spiral separation assembly according to an embodiment of the present disclosure;

[0023] Figure 2D is a perspective view of a curved baffle of a spiral separation assembly according to an embodiment of the present disclosure;

[0024] Figure 2E is a front view of a curved baffle of a spiral separation assembly according to an embodiment of the present disclosure;

[0025] Figure 2F is a top view of a curved baffle of a spiral separation assembly according to an embodiment of the present disclosure;

[0026] Figure 3A is a front view of a coalescing and separating assembly according to one embodiment of the present disclosure;

[0027] Figure 3B is a top view of a coalescing separation assembly according to one embodiment of the present disclosure; and

[0028] Figure 3C is a left side view of a coalescing and separating assembly according to one embodiment of the present disclosure.

[0029] In the figure: 1. Pressure vessel equipment shell; 2. Coagulation and separation component; 2-1. Cover plate; 2-2. Modular foam breaking net block; 2-3. Bottom support plate; 2-4. Side support plate; 2-5. Pressure cover; 3. Flow stabilizing liquid blocking component; 3-1. Annular flow stabilizing liquid blocking plate; 3-2. Support rib plate; 3-3. First medium flow hole; 4. Spiral separation component; 4-1. Turning elbow; 4-2. Anti-wear plate; 4-3. Baffle ring; 4-4. Arc baffle; 5. Wire mesh foam removal component; 6. Medium inlet; 7. Gas outlet; 8. Upper head; 9. Oil outlet; 10. Lower head; 11. Support skirt; 12. Condensate outlet. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the specific embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. These embodiments are provided by way of example only. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are also within the scope of protection claimed by the present disclosure.

[0031] In the description of the present disclosure, it should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present disclosure.

[0032] In the description of the present disclosure, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0033] One embodiment of the present disclosure provides a multiple three-phase separator. Figure 1 The multiple three-phase separator includes: a pressure vessel equipment shell 1 and a wire mesh defoaming assembly 5, a spiral separation assembly 4, a flow stabilizing liquid blocking assembly 3 and a coalescence separation assembly 2 arranged in the pressure vessel equipment shell 1 from top to bottom. As the key bearing structure of the entire separator, the pressure vessel equipment shell 1 includes a cylinder, an upper head 8 arranged at the top of the cylinder, a lower head 10 arranged at the bottom of the cylinder, and a support skirt 11 (for example, a cylindrical skirt) arranged below the lower head 10 to support the lower head 10, the cylinder and other structures and ensure that the separator remains stable during operation. One side of the cylinder (for example, Figure 1 A medium inlet 6 is provided at the middle upper part of the left side of the cylinder as shown in the figure, for the inflow of the oil-gas-water three-phase mixed medium, providing raw material input for the subsequent separation process. Figure 1 An oil outlet 9 is provided in the middle and lower part of the right side of the cylinder shown in the figure, for discharging the separated oil. A gas outlet 7 is provided in the upper end cap 8, for discharging the pure gas separated after a series of separation processes. A lower end cap hole is provided in the lower end cap 10. A condensate outlet 12 is provided in the support skirt 11, for discharging the liquid (water) condensed during the separation process. The lower end cap hole is connected to the condensate outlet 12 through a connecting pipe located in the support skirt 11.

[0034] Reference Figure 1 as well as FIG. 2A to FIG. 2F, the spiral separation assembly 4 is installed in the cylinder and has a spiral downward medium flow channel connected to the medium inlet 6, so as to perform preliminary separation on the three-phase mixed medium of oil, gas and water. In a preferred embodiment of the present disclosure, the spiral separation assembly 4 includes a steering elbow 4-1, a wear plate 4-2, a retaining ring 4-3 and an arc-shaped baffle 4-4. The steering elbow 4-1 is fixed on the inner wall of the cylinder and is connected to the medium inlet 6; for example, the steering elbow 4-1 is welded to the inner wall of the cylinder where the medium inlet 6 is located. The wear plate 4-2 is attached to the inner wall of the cylinder facing the outlet of the steering elbow 4-1. The arc-shaped outer side of the arc-shaped baffle 4-4 is fixed (for example, welded) on the inner wall of the cylinder, and the retaining ring 4-3 is fixedly attached (for example, welded) to the arc-shaped inner side of the arc-shaped baffle 4-4.

[0035] like Figure 2C to Figure 2F As shown, the arc baffle 4-4 and the baffle ring 4-3 are both configured to extend spirally downward in the axial direction of the cylinder so that the arc baffle 4-4 and the baffle ring 4-3 together form the medium flow channel spirally downward. Figure 2D In the three-dimensional view of the arc baffle 4-4 shown in the figure, in the horizontal direction of the cylinder, a part of the arc baffle 4-4 is higher than another part of the arc baffle 4-4, and the other part of the arc baffle 4-4 extends downwardly in a spiral from the part of the arc baffle 4-4, so that the arc baffle 4-4 as a whole has an arc plate structure extending downwardly in a spiral. Figure 2F The upper left part of Figure 2B It can be seen that the radius of the arc outer side of the arc baffle 4-4 in contact with the anti-wear plate 4-2 is smaller than the radius of the other arc outer sides of the arc baffle 4-4, so that Figure 2F In the top view shown, it can be seen that a gap is formed between the arc outer side of the arc baffle 4-4 that contacts the anti-wear plate 4-2 and the remaining arc outer side of the arc baffle 4-4. The purpose of this arrangement is to reserve installation space for the installation of the anti-wear plate 4-2, so as to facilitate the installation of the anti-wear plate 4-2, and at the same time, the contact between the anti-wear plate 4-2, the arc baffle 4-4 and the inner wall of the cylinder is closer, further avoiding the problem of low separation efficiency caused by the oil-gas-water three-phase mixed medium directly flowing to the steady flow liquid retaining component 3 through the gap between the anti-wear plate 4-2, the arc baffle 4-4 and the inner wall of the cylinder without being separated by the spiral separation component 4. Since the retaining ring 4-3 is attached to the arc inner side of the arc baffle 4-4, the retaining ring 4-3 also extends spirally downward along with the spiral downward extension trend of the arc baffle 4-4, so the retaining ring 4-3 as a whole also presents an arc ring structure that extends spirally downward.

[0036] Reference Figure 1 as well as FIG. 2A to FIG. 2B, the flow-stabilizing liquid-blocking component 3 is located in the cylinder, and includes an annular flow-stabilizing liquid-blocking plate 3-1 located below the spiral separation component 4 and a plurality of supporting ribs 3-2 fixed on the inner wall of the cylinder along the circumference of the cylinder. The annular flow-stabilizing liquid-blocking plate 3-1 is used to stabilize the flow velocity and flow direction of the oil-gas-water three-phase mixed medium after preliminary separation by the spiral separation component 4. The annular flow-stabilizing liquid-blocking plate 3-1 is fixed on a plurality of supporting ribs 3-2, and a first medium flow hole 3-3 is provided. In a preferred embodiment of the present disclosure, a plurality of supporting ribs 3-2 are evenly fixed on the inner wall of the cylinder along the circumference of the cylinder, ensuring the stability of the annular flow-stabilizing liquid-blocking plate 3-1, avoiding large liquid level fluctuations in the lower oil and water separation space caused by high-speed scouring, and ensuring the efficient implementation of the subsequent oil and water separation process. The size of the first medium flow hole 3-3 is configured so that the liquid phase medium separated by the spiral separation component 4 first flows to the annular flow-stabilizing liquid-blocking plate 3-1, and then flows through the first medium flow hole 3-3. The radius of the first medium flow hole 3-3 is smaller than the inner radius of the arc segment of the baffle ring 4-3, and is preferably approximately half of the inner radius of the arc segment of the baffle ring 4-3. This size arrangement prevents the liquid phase medium separated by the spiral separation component 4 from flowing downward at high speed directly through the first medium flow hole 3-3 without being buffered and stabilized by the annular flow stabilizing plate 3-1, thereby avoiding large liquid level fluctuations in the lower oil and water separation space.

[0037] Reference Figure 1 as well as FIG. 3A to FIG. 3C , the coalescence separation component 2 is installed in the cylinder and is located below the steady flow liquid blocking component 3. The coalescence separation component 2 includes an arc-shaped (for example, semicircular) cover plate 2-1, a bottom support plate 2-3, four side support plates 2-4 arranged relatively spaced apart in pairs, and multiple groups of modular foam breaking net blocks 2-2. The arc side of the cover plate 2-1 is fixed on the inner wall of the cylinder. The four side support plates 2-4 are all provided with multiple second medium flow holes (for example, rectangular holes) for medium circulation. These second medium flow holes serve as channels for medium circulation to ensure that the three-phase mixed medium of oil, gas and water can smoothly enter the interior of the box described below. Multiple groups of modular foam breaking net blocks 2-2 are vertically placed in a box composed of a cover plate 2-1, a bottom support plate 2-3 and four side support plates 2-4 (for example, by welding). The box is preferably located in the middle of the lower part of the cylinder, directly below the first medium flow hole 3-3. The bottom support plate 2-3 is a solid whole plate, which plays a role of stable support.

[0038] In a preferred embodiment of the present disclosure, the coalescence separation assembly 2 further includes a pressure cover 2-5, which is pressed on the cover plate 2-1 and is located directly above the box body where the multiple groups of modular foam breaking net blocks 2-2 are located. The pressure cover 2-5 presses and fixes the multiple groups of modular foam breaking net blocks 2-2 in the box body to better coalesce and separate the three-phase mixed medium of oil, gas and water. Preferably, the pressure cover 2-5 is detachably connected to the cover plate 2-1 by fasteners (for example, bolts). This connection method not only ensures the stability of the modular foam breaking net blocks 2-2, but also facilitates subsequent disassembly and maintenance.

[0039] In a preferred embodiment of the present disclosure, the oil outlet 9 is located below the cover plate 2-1 and is adjacent to the two longer side support plates 2-4 (i.e. Figure 3A The two opposite side support plates 2-4) are opposite to each other and are adjacent to the arc-shaped side of the cover plate 2-1. Figure 3C As shown, the two shorter side support plates 2-4 (i.e. Figure 3C The two opposite side support plates 2-4) are each tightly connected to the inner wall of the cylinder facing it (correspondingly, Figure 3C The shorter left and right sides of the solid bottom support plate 2-3 shown in the figure are also sealed and connected to the inner wall of the cylinder facing each other), thereby preventing the oil-gas-water three-phase mixed medium from directly flowing through the gap between the coalescing separation component 2 and the inner wall of the cylinder without being separated by the coalescing separation component 2 and being discharged from the oil outlet 9. The sealed connection is preferably welded.

[0040] like Figure 1 As shown, the wire mesh defoaming assembly 5 is installed in the cylinder and is located above the spiral separation assembly 4, for example, near the top of the cylinder. The wire mesh defoaming assembly 5 is used to separate the gas that carries trace amounts of liquid after multiple separations based on the inertial diffusion capillary separation method. To achieve this effect, in a preferred embodiment of the present disclosure, the wire mesh defoaming assembly 5 includes a multi-layer wire mesh block and a support structure that fixes and supports the multi-layer wire mesh block. The support structure is fixed on the inner wall of the cylinder.

[0041] The working principle of the multiple three-phase separator is described below in combination with the functions of the various components of the multiple three-phase separator according to an embodiment of the present disclosure.

[0042] Regarding the spiral separation component 4, the steering elbow 4-1 gives the incoming oil-gas-water three-phase mixed medium an initial flow direction and flow rate; the anti-wear plate 4-2 resists the erosion of the inner wall of the cylinder by the high-flow rate mixed medium at the inlet of the steering elbow 4-1, effectively protecting the cylinder and extending the service life of the cylinder; when the oil-gas-water three-phase mixed medium flows through the spiral medium flow channel formed by the arc baffle 4-4 and the baffle ring 4-3, separation is achieved under the action of centrifugal force and gravity, and the separated gas phase medium will run upward through the central part of the baffle ring 4-3, while the oil-water medium will flow downward along the spiral medium flow channel. That is to say, the spiral separation component 4 performs preliminary separation of the oil, gas and water three-phase mixed medium entering therein by means of spiral centrifugal separation; when the oil, gas and water three-phase mixed medium flows through the spiral medium flow channel under high pressure and high speed, it will be affected by the combined action of centrifugal force and gravity. Under the combined action of these two forces, the oil, gas and water three-phase mixed medium is initially separated, wherein the gas, due to its relatively small density, moves upward under the combined influence of centrifugal force and gravity, while the liquid phase medium such as oil and water moves downward due to its relatively large density. In this way, the spiral separation component 4 effectively realizes the preliminary separation of the oil, gas and water three-phase mixed medium, laying a good foundation for the subsequent separation process.

[0043] Regarding the steady flow liquid retaining assembly 3, the oil, gas and water three-phase mixed medium that has completed preliminary separation from the spiral separation assembly 4 will enter the steady flow liquid retaining assembly 3 in a high-speed spiral flow state downward. This high-speed flow is prone to cause large liquid level fluctuations in the lower oil and water separation space, thereby affecting the oil and water separation efficiency. The annular steady flow liquid retaining plate 3-1 of the steady flow liquid retaining assembly 3 can effectively solve this problem. It is located below the spiral separation assembly 4 (preferably directly below), so as to receive the high-speed spiral flow of the oil, gas and water three-phase mixed medium that has completed preliminary separation from the spiral separation assembly 4, and can effectively buffer it, stabilize its flow rate and flow direction, and ensure that it can flow downward smoothly and evenly, avoiding large liquid level fluctuations in the lower oil and water separation space, thereby providing stable working conditions for subsequent further separation in the agglomeration separation assembly 2.

[0044] Regarding the coalescence separation component 2, after the oil-gas-water three-phase mixed medium, which has been buffered and stabilized by the flow-stabilizing liquid blocking component 3, enters the coalescence separation component 2, it will first form upper and lower layers according to the density difference between oil and water, and most of the water will be deposited in the lower part to produce a natural water seal effect, so as to effectively prevent the oil-gas-water three-phase mixed medium from bypassing the coalescence separation component 2 and being discharged from the oil outlet 9 without being separated by the coalescence separation component 2; the oil is located in the upper layer of the water. Subsequently, the oil-gas-water three-phase mixed medium passes through multiple groups of modular foam-breaking net blocks 2-2, and coalescence and separation occurs under the action of the modular foam-breaking net blocks 2-2. The gas macromolecules condense to form a steam drum and move upward, and the water is deposited downward due to gravity and finally flows out from the condensate outlet 12 of the support skirt 11 at the bottom of the separator, while the separated oil is located in the upper layer of the water and flows out through the oil outlet 9 set in the middle and lower part of the cylinder. Through such a process, the coalescence separation component 2 realizes further efficient separation of the oil-gas-water three-phase mixed medium, meeting the needs of subsequent processes. The coalescence separation component 2 adopts a modular defoaming mesh block structure, which is easy to install and replace. The upper part is sealed with a cover plate 2-1, and the lower part is sealed by a water seal structure automatically formed when the aqueous medium passes through its modular defoaming mesh block structure, without the need for a special baffle.

[0045] Regarding the wire mesh defoaming assembly 5, it is installed on the top of the cylinder, and includes a supporting structure and a multi-layer wire mesh block. When the three-phase mixed medium of oil, gas and water undergoes multiple separations, the gas flows upward, and a trace amount of water will be entrained therein to form a gas-water mixed medium. When the gas-water mixed medium passes through the multi-layer wire mesh block, the gas and water are further separated based on the inertial diffusion capillary separation method. In this process, the trace water in the gas will be intercepted and condensed, and pure gas is finally obtained. The pure gas is discharged from the gas outlet 7 at the top of the separator, and the condensed water flows downward again and re-enters the separation process. Therefore, the wire mesh defoaming assembly 5 ensures the purity of the discharged gas and improves the working efficiency of the entire separator.

[0046] Therefore, the working principle of the multiple three-phase separator disclosed in the present invention is generally as follows: the oil, gas and water three-phase mixed medium enters the interior of the cylinder from the medium inlet 6 of the pressure vessel equipment shell 1 through the turning elbow 4-1, and the turning elbow 4-1 gives the medium an initial swirl angle and speed. Subsequently, the medium passes through the spiral separation component 4 and is initially separated in a spiral centrifugal separation manner. The separated gas flows upward, while the liquid mainly containing oil and water flows downward. Next, the liquid flows through the steady flow liquid baffle component 3 below the spiral separation component 4, and the annular steady flow liquid baffle plate 3-1 of the steady flow liquid baffle component 3 plays a buffering and stabilizing role for the high-speed swirl liquid. Afterwards, the liquid flows downward by gravity and passes through the box of the agglomeration separation component 2 located in the middle of the lower part of the cylinder. The liquid will be stratified due to density differences. Most of the water is deposited in the lower part of the cylinder to form a water seal structure and can further flow through the lower head hole to the condensate outlet 12 of the support skirt 11 and be discharged from the multiple three-phase separator; the upper oil, water, and gas mixed medium are separated by multiple sets of modular defoaming mesh blocks 2-2, and the oil flows out from the multiple second medium flow holes of the side support plate 2-4 and is discharged from the cylinder through the oil outlet 9. The gas and water mixed medium flows upward and passes through the multi-layer wire mesh blocks of the wire mesh defoaming assembly 5. The multi-layer wire mesh blocks further separate the gas and water mixed medium by inertial diffusion capillary separation. The separated pure gas is discharged from the gas outlet 7 at the top, and the condensed water flows downward again to participate in the separation again. At this point, a three-phase oil, gas, and water mixed medium separation process is completed.

[0047] The multiple three-phase separator disclosed in the present invention integrates gravity separation technology, spiral centrifugal separation technology, coagulation separation technology and inertial diffusion capillary separation technology to construct a high-efficiency multiple three-phase separator, which improves separation efficiency, separation effect and operational stability, reduces energy waste caused by the implementation of each separation technology alone, and the discharged gas and water meet environmental protection requirements, thereby meeting the complex needs of oil, gas and water three-phase separation in petrochemical engineering and improving the stability and energy saving of the overall process.

[0048] Specifically, the multiple three-phase separator disclosed in the present invention arranges the wire mesh defoaming component 5, the spiral separation component 4, the steady flow liquid blocking component 3 and the coalescence separation component 2 in layers from top to bottom, so that the gravity separation technology can be used to achieve the sedimentation and floating of components of different densities in a laminar state according to the relative density difference characteristics of the components such as oil, water and gas, without using additional components and energy to achieve the sedimentation and floating, so it can process a large flow of oil, gas and water mixture while reducing energy efficiency; and this layered arrangement disclosed in the present invention realizes the synergy between the spiral centrifugal separation technology, the coalescence separation technology and the inertial diffusion capillary separation technology, as well as between them and the gravity separation technology, thereby improving the operating efficiency and greatly shortening the separation time. The spiral separation component 4 can make the oil, gas and water three-phase mixed medium flow in a high-speed spiral, and the oil, gas and water of different densities will produce different centrifugal forces, thereby achieving a better initial separation of oil, gas and water. The coalescence separation component 2 cooperates with the gravity separation process to realize the microscopic processes of adsorption, wetting, collision, coalescence, etc. of different phase media in the coalescence separation component 2 under the action of gravity, and effectively removes them from the coalescence separation component 2 under the action of gravity and fluid flow, thereby maximizing the oil-water separation effect. The wire mesh defoaming component 5 allows gas and water to be efficiently separated by inertia and capillary action when passing through it.

[0049] It should be understood that the drawings in the embodiments of the present disclosure only relate to structures related to the embodiments of the present disclosure, and other structures can refer to the general design. The devices and / or structures in the various embodiments provided in the present disclosure can be combined, modified and / or changed to form new technical solutions. In the absence of creative work, these technical solutions should also be included in the scope of protection claimed in the present disclosure.

[0050] A large number of specific examples are provided in the embodiments provided herein, and it should be understood that these examples are only for the purpose of describing the embodiments of the present disclosure in detail and are not intended to limit the present disclosure. The embodiments in the present disclosure can be practiced without these specific examples. In some embodiments, structures and / or technologies known to those skilled in the art are not shown in detail so as not to obscure the understanding of the present disclosure.

[0051] Although preferred embodiments of the present disclosure have been shown and described herein, it is readily understood by those skilled in the art that these embodiments are provided by way of example only. Those skilled in the art will appreciate a variety of changes, modifications, and substitutions without departing from the present disclosure. It should be understood that the various alternatives to the embodiments of the present disclosure described herein are optionally used to implement the present disclosure. It is intended that the scope of the present disclosure be limited to the appended claims, and that the devices, structures, and equivalents thereof within the scope of these claims are thereby covered.

Claims

1. A multiple three-phase separator, characterized in that: include: A pressure vessel equipment shell (1) comprises a cylinder, one side of which is provided with a medium inlet (6); A spiral separation assembly (4) installed in the cylinder and having a spiral downward medium flow channel connected to the medium inlet (6); A flow stabilizing liquid blocking component (3) is located in the cylinder and comprises an annular flow stabilizing liquid blocking plate (3-1) located below the spiral separation component (4) and a plurality of supporting ribs (3-2) fixed on the inner wall of the cylinder along the circumference of the cylinder, wherein the annular flow stabilizing liquid blocking plate (3-1) is fixed on the plurality of supporting ribs (3-2) and is provided with a first medium flow hole (3-3); A coalescence separation component (2) is installed in the cylinder and is located below the flow stabilizing liquid blocking component (3), and comprises an arc-shaped cover plate (2-1), a bottom support plate (2-3), four side support plates (2-4) arranged in pairs and spaced apart from each other, and a plurality of modular foam breaking net blocks (2-2), wherein the arc-shaped side of the cover plate (2-1) is fixed to the inner wall of the cylinder, the four side support plates (2-4) are each provided with a plurality of second medium flow holes, and the plurality of modular foam breaking net blocks (2-2) are vertically placed in a box body composed of the cover plate (2-1), the bottom support plate (2-3) and the four side support plates (2-4); and A wire mesh defoaming assembly (5) is installed in the cylinder and is located above the spiral separation assembly (4).

2. The multiple three-phase separator according to claim 1, characterized in that: The pressure vessel equipment shell (1) further comprises an upper head (8) arranged at the top end of the cylinder, a lower head (10) arranged at the bottom end of the cylinder, and a supporting skirt (11) arranged below the lower head (10). An oil outlet (9) is provided on the other side of the cylinder, a gas outlet (7) is provided on the upper head (8), a lower head hole is provided on the lower head (10), a condensate outlet (12) is provided on the support skirt (11), and the lower head hole is connected to the condensate outlet (12) via a connecting pipe located in the support skirt (11).

3. The multiple three-phase separator according to claim 2, characterized in that: The oil outlet (9) is located below the cover plate (2-1), opposite to the two longer side support plates (2-4) among the four side support plates (2-4), and adjacent to the arc-shaped side of the cover plate (2-1); The two shorter side support plates (2-4) of the four side support plates (2-4) of the box body of the coalescence separation component (2) are each tightly connected to the inner wall of the cylinder body they face.

4. The multiple three-phase separator according to claim 1, characterized in that: The spiral separation assembly (4) comprises a steering elbow (4-1), a wear plate (4-2), a baffle ring (4-3) and an arc-shaped baffle (4-4). The steering elbow (4-1) is fixed on the inner wall of the cylinder and is connected to the medium inlet (6); the wear plate (4-2) is fitted on the inner wall of the cylinder facing the outlet of the steering elbow (4-1); the arcuate outer side of the arcuate baffle (4-4) is fixed on the inner wall of the cylinder; the baffle ring (4-3) is fixedly attached to the arcuate inner side of the arcuate baffle (4-4); the arcuate baffle (4-4) and the baffle ring (4-3) are both configured to extend spirally downward in the axial direction of the cylinder so that the arcuate baffle (4-4) and the baffle ring (4-3) together form a spiral downward medium flow channel.

5. The multiple three-phase separator according to claim 4, characterized in that: The size of the first medium circulation hole (3-3) is configured so that the liquid medium separated by the spiral separation component (4) first flows onto the annular flow stabilizing baffle plate (3-1) and then flows through the first medium circulation hole (3-3).

6. The multiple three-phase separator according to claim 5, characterized in that: The radius of the first medium flow hole (3-3) is smaller than the inner radius of the arc segment of the retaining ring (4-3).

7. The multiple three-phase separator according to claim 6, characterized in that: The radius of the first medium circulation hole (3-3) is half of the inner radius of the arc segment of the retaining ring (4-3).

8. The multiple three-phase separator according to claim 1, characterized in that: The coalescence separation component (2) further comprises a pressure cover (2-5), wherein the pressure cover (2-5) is pressed on the cover plate (2-1) and is located directly above the box body where the multiple groups of modular foam breaking net blocks (2-2) are located.

9. The multiple three-phase separator according to claim 8, characterized in that: The pressure cover (2-5) is detachably connected to the cover plate (2-1) via a fastener.

10. The multiple three-phase separator according to claim 1, characterized in that: The wire mesh defoaming assembly (5) comprises a multi-layer wire mesh block and a support structure for fixing and supporting the multi-layer wire mesh block, wherein the support structure is fixed on the inner wall of the cylinder.

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