Multi-stage gas-liquid separator

Abstract

The utility model provides a multistage gas-liquid separator. The multistage gas-liquid separator comprises a tank body as well as a first-stage separation assembly, a second-stage separation assembly and a third-stage separation assembly which are arranged in an inner cavity of the tank body from bottom to top, wherein a gas-liquid inlet is formed in the side wall of the tank body, a liquid outlet is formed in the bottom of the tank body, and a gas outlet is formed in the top of the tank body; the first-stage separation assembly comprises a cover plate, an inner shell with the upper end and the lower end opened, a spiral blade wound around the outer wall of the inner shell and a first flow guide pipe with the top end communicating with the upper end face of the cover plate. An air vent is formed in the cover plate, and an opening in the upper end of the inner shell is communicated with the air vent; the second-stage separation assembly comprises a cover cap provided with a plurality of air outlet channels, baffling components arranged on the cover cap and corresponding to the air outlet channels, and a flow guide pipe II of which the top end is communicated with the upper end surface of the cover cap; and the third-stage separation assembly is a silk screen separator. The utility model relates to a multistage gas-liquid separator.

Description

Technical Field

[0001] The utility model belongs to the field of gas-liquid separator equipment, in particular to a multi-stage gas-liquid separator. Background Art

[0002] A gas-liquid separator is an industrial device used to process gases containing condensate, separating them from each other. It is widely used in the chemical, petroleum, and natural gas industries. Common operating principles for gas-liquid separators include: gravity settling—utilizing the weight difference between liquid and gas, causing the liquid to settle to the bottom of the separator and the gas to rise to the top; baffle separation—using partitions or fillers to increase the residence time of the gas-liquid mixture within the separator, improving separation efficiency; centrifugal separation—when a liquid and gas mixture rotates, the centrifugal force on the liquid is greater than that on the gas, causing it to collide with and adhere to the cylinder wall, ultimately separating due to gravity; wire mesh separation—when liquid and gas pass through a wire mesh, the liquid is intercepted and the gas passes through, achieving separation; and microfiltration separation—when gas and liquid pass through microporous filtration, the liquid is intercepted and the gas passes through, achieving separation. Based on the separation principle, there are many types of gas-liquid separators, including centrifugal gas-liquid separators, baffled gas-liquid separators, wire mesh gas-liquid separators, filler separators, and microfiltration separators. Each gas-liquid separator has its advantages and disadvantages. For example, the centrifugal gas-liquid separator has a high separation efficiency and a good separation effect, but when the gas-liquid flow rate is too fast, the separated liquid is easily carried away again; the baffled gas-liquid separator has a simple structure, low cost, and stable structure, but it also has problems of low separation efficiency and poor effect; the wire mesh gas-liquid separator has a simple structure and high separation efficiency, but it has a narrow separation load range. When the gas flow rate is too high, the liquid accumulated on the wire mesh is not easy to fall off, resulting in mesh blockage. Utility Model Content

[0003] In view of this, in order to solve the above technical problems, the utility model proposes a multi-stage gas-liquid separator. Through reasonable structural design, the use of multiple separation principles and multi-stage separation modes, the separation efficiency of the gas-liquid separator is effectively improved, the separation effect is optimized, and it can be used under higher gas-liquid flow rate operating conditions.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] A multi-stage gas-liquid separator comprises a tank body and a primary separation component, a secondary separation component and a tertiary separation component arranged in the inner cavity of the tank body from bottom to top:

[0006] The tank body is provided with a gas and liquid inlet on the side wall, a liquid outlet at the bottom and a gas outlet at the top;

[0007] The primary separation assembly includes a cover plate seamlessly connected to the inner wall of the tank and located above the gas-liquid inlet, an inner shell with open upper and lower ends, spiral blades wrapped around the outer wall of the inner shell to form a spiral channel, and a vertically arranged flow guide pipe with its top end connected to the upper end surface of the cover plate; a vent is provided on the cover plate, and the upper end of the inner shell is open and connected to the vent;

[0008] The secondary separation assembly includes a cover seamlessly connected to the inner wall of the tank and provided with a plurality of gas outlet channels, a deflection member provided on the cover and corresponding to the gas outlet channels one by one, and a second guide pipe vertically provided with a top end connected to the upper end surface of the cover;

[0009] The three-stage separation component is a wire mesh separator.

[0010] The condensate-containing gas entering from the gas-liquid inlet is pre-separated by the first-stage separation component. The first-stage separation component is designed based on the centrifugal separation principle. The gas and liquid rotate under the action of the spiral blades. There is a difference in the mass of the gas and liquid, which generates different centrifugal forces. The liquid with large mass is subjected to a large centrifugal force and is thrown to the outer circle. The gas with small mass is subjected to a small centrifugal force and is in the inner circle, realizing the separation of the two. The liquid sinks to the bottom of the tank due to gravity; the gas enters the inner cavity of the inner shell after preliminary gas-liquid separation and flows into the second-stage separation component; in the second-stage separation component, When part of the gas and liquid collides with the cover, part of the liquid will be separated and drip onto the cover plate, and then the guide pipe 1 will drain it to the bottom of the tank; the gas and liquid continue to rise and collide with the deflection component through the gas outlet channel. The deflection component intercepts part of the liquid, and the liquid flows along the cover and gathers at the guide pipe 2, and is introduced into the cover plate by the guide pipe 2, and then drained to the bottom of the tank by the guide pipe 1. The separated gas continues to rise and enters the three-stage separation component, where it is separated from the liquid by the wire mesh separator. The separated liquid drips back onto the cover and is finally drained to the bottom of the tank, and the gas is discharged from the gas outlet at the top of the tank.

[0011] Furthermore, the cover plate is an inverted bowl-shaped structure with an upward protrusion in the middle, a circle near the edge is a recessed structure and is provided with a drainage port 1, and the top end of the guide tube 1 is connected to the drainage port 1.

[0012] The separated liquid can flow along the surface of the cover plate, gather at the concave structure, flow into the guide pipe through the drainage port and be discharged to the bottom of the tank.

[0013] Furthermore, the convex surface of the cover faces upward, and a circle close to the edge is a concave structure and is provided with a second drainage port, and the top end of the second drainage pipe is connected to the second drainage port.

[0014] The separated liquid can flow along the surface of the cover, gather at the concave structure, flow into the second guide pipe through the second drainage port, and then be discharged to the bottom of the tank through the first guide pipe.

[0015] Furthermore, the air outlet channel is a long strip-shaped opening opened on the cover, and a plurality of the air outlet channels are arranged in parallel at equal intervals.

[0016] Furthermore, the deflection component includes an enclosure arranged around the edge of the air outlet channel, a support rod arranged on the top of the enclosure, and an inverted V-shaped cover plate supported by the support rod; the enclosure is provided with a plurality of openings; the inverted V-shaped cover plate covers the top of the enclosure, and the liquid on the inverted V-shaped cover plate flows along the inverted V-shaped cover plate and drips onto the cover.

[0017] The rising gas enters the deflection component through the air outlet channel, collides with the enclosure and the inverted V-shaped cover, and part of the liquid is trapped, while the gas flows out from the opening and the gap between the enclosure and the inverted V-shaped cover, and continues to rise.

[0018] Furthermore, the opening is a long strip opening arranged along the length direction of the enclosure, and the outer wall of the enclosure is located above the opening and is provided with a baffle inclined downward for colliding with the rising gas and intercepting liquid, and the intercepted liquid can drip smoothly onto the cover.

[0019] Furthermore, there are two secondary separation components, which are arranged at intervals along the vertical direction.

[0020] Furthermore, a plurality of vertically arranged drainage plates are evenly distributed at the bottom of the wire mesh separator to drain the liquid condensed on the wire mesh separator.

[0021] Compared with the prior art, the multi-stage gas-liquid separator described in the present invention has the following advantages:

[0022] (1) The multi-stage gas-liquid separator described in the present invention adopts a three-stage separation mode; the first stage adopts a centrifugal separation mode to perform preliminary separation on the incoming gas and liquid; the second stage adopts a deflection collision condensation separation mode, which can not only achieve the function of intercepting liquid through the multiple interception methods of the cover and the deflection component, but also has the function of buffering the rising gas flow rate and evenly distributing the gas flow; the third stage adopts a wire mesh separation mode, and the rising gas slows down the flow rate at the secondary separation component, evenly distributes the airflow direction, avoids the influx of gas with too fast a flow rate, affects the separation effect of the wire mesh separator, avoids the wire mesh separator from being blocked, effectively improves the separation efficiency, and optimizes the separation effect;

[0023] (2) The cover plate and cover cap of the present invention both adopt a structure that is conducive to the flow and collection of liquid, and by providing a first guide pipe and a second guide pipe, the separated liquid is drained to the bottom of the tank in stages, thereby preventing the separated liquid from colliding and mixing with the gas again;

[0024] (3) The deflection component structure of the present invention is cleverly designed, and adopts enclosures, inverted V-shaped covers, and baffles to achieve multiple collisions with the rising gas, thereby optimizing the separation effect. Moreover, the inverted V-shaped covers and baffles both have the function of drainage, and can drain the separated liquid to the cover, and finally discharge it through the second guide pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 This is a structural diagram of a multi-stage gas-liquid separator according to an embodiment of the present utility model;

[0027] Figure 2 for Figure 1 A magnified view of point A;

[0028] Figure 3 This is a schematic top view of the structure of the secondary separation component described in an embodiment of the present utility model.

[0029] Description of reference numerals:

[0030] 1-tank body, 2-gas-liquid inlet, 3-liquid outlet, 4-gas outlet, 5-cover plate, 6-inner shell, 7-spiral blade, 8-guide tube 1, 9-vent, 10-gas outlet channel, 11-cover, 12-baffle component, 13-guide tube 2, 14-enclosure, 15-support rod, 16-inverted V-shaped cover plate, 17-opening, 18-baffle, 19-wire mesh separator, 20-guide plate. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0032] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] like Figures 1 to 3 As shown, a multi-stage gas-liquid separator includes a tank body 1 and a first-stage separation component, a second-stage separation component and a third-stage separation component arranged in the inner cavity of the tank body 1 from bottom to top:

[0036] The tank body 1 is provided with a gas-liquid inlet 2 on its side wall, a liquid outlet 3 at its bottom, and a gas outlet 4 at its top;

[0037] The primary separation component includes a cover plate 5 seamlessly connected to the inner wall of the tank body 1 and located above the gas-liquid inlet 2, an inner shell 6 with open upper and lower ends, a spiral blade 7 wrapped around the outer wall of the inner shell 6 to form a spiral channel, and a vertically arranged guide tube 8 with its top end connected to the upper end surface of the cover plate 5; the cover plate 5 is an inverted bowl-shaped structure with an upward protrusion in the middle, and a circle near the edge is a concave structure with a drainage port 1, and the top of the guide tube 8 is connected to the drainage port 1; a vent 9 is provided on the cover plate 5, and the upper end of the inner shell 6 is open and connected to the vent 9;

[0038] There are two secondary separation components, which are arranged at intervals along the vertical direction. The secondary separation components include a cover 11 seamlessly connected to the inner wall of the tank body 1 and provided with multiple air outlet channels 10, a deflection member 12 provided on the cover 11 and corresponding to the air outlet channels 10, and a second guide pipe 13 vertically arranged and connected to the upper end face of the cover 11 at the top. The convex surface of the cover 11 faces upward, and a circle near the edge is a concave structure and provided with a second drainage port. The top of the second guide pipe 13 is connected to the second drainage port. The air outlet channels 10 are opened on the cover. 11, a plurality of air outlet channels 10 are arranged in parallel at equal intervals; the deflector member 12 includes a fence 14 arranged around the edge of the air outlet channel 10, a support rod 15 provided on the top of the fence 14, and an inverted V-shaped cover plate 16 supported by the support rod 15; the fence 14 is provided with a plurality of openings 17, the openings 17 are long strip openings arranged along the length direction of the fence 14, and the outer wall of the fence 14 is provided with a baffle 18 inclined downward above the openings 17; the inverted V-shaped cover plate 16 covers the top of the fence 14;

[0039] The third-stage separation component is a wire mesh separator 19 , and a plurality of vertically arranged drainage plates 20 are evenly distributed at the bottom of the wire mesh separator 19 .

[0040] The working process of the multi-stage gas-liquid separator described in the utility model is as follows:

[0041] The condensate-containing gas enters the tank body 1 from the gas-liquid inlet 2. In the primary separation component, the gas and liquid rotate under the action of the spiral blades 7. The liquid with large mass is thrown to the outer circle, and the gas with small mass is in the inner circle. The gas and liquid are separated, and the liquid sinks to the bottom of the tank body 1 under the action of gravity; the gas enters the inner cavity of the inner shell 6 and flows into the secondary separation component. In the secondary separation component, part of the gas and liquid collides with the cover 11, and part of the liquid is separated and drips onto the cover plate 5; the gas rises through the outlet channel 10, enters the deflection component 12, collides with the baffle 14 and the inverted V-shaped cover plate 16, and part of the liquid is intercepted and drips onto the cover plate 5 and the cover 11. The liquid on the cover 11 flows along the surface of the cover 11, gathers at the recessed structure, flows into the guide pipe 2 13 through the drainage port 2, is introduced into the cover plate 5 by the guide pipe 2 13, and then is drained to the bottom of the tank body 1 by the guide pipe 1 8; the gas flows out from the opening 17 and the gap between the baffle 14 and the inverted V-shaped cover plate 16, continues to rise and enters the tertiary separation component; in the tertiary separation component, the wire mesh separator 19 continues to separate the gas and liquid, and the separated liquid is drained by the guide plate 20 to the cover 11 below, and finally gathers at the bottom of the tank body 1, and the gas is discharged from the gas outlet 4 at the top of the tank body 1.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-stage gas-liquid separator, characterized in that: It includes a tank body and a primary separation component, a secondary separation component and a tertiary separation component arranged in the inner cavity of the tank body from bottom to top: The tank body is provided with a gas and liquid inlet on the side wall, a liquid outlet at the bottom and a gas outlet at the top; The primary separation assembly includes a cover plate seamlessly connected to the inner wall of the tank and located above the gas-liquid inlet, an inner shell with open upper and lower ends, spiral blades wrapped around the outer wall of the inner shell to form a spiral channel, and a vertically arranged flow guide pipe with its top end connected to the upper end surface of the cover plate; a vent is provided on the cover plate, and the upper end of the inner shell is open and connected to the vent; The secondary separation assembly includes a cover seamlessly connected to the inner wall of the tank and provided with a plurality of gas outlet channels, a deflection member provided on the cover and corresponding to the gas outlet channels one by one, and a second guide pipe vertically provided with a top end connected to the upper end surface of the cover; The three-stage separation component is a wire mesh separator.

2. The multi-stage gas-liquid separator according to claim 1, characterized in that: The cover plate is an inverted bowl-shaped structure with an upwardly protruding middle portion, a circle near the edge is a recessed structure and is provided with a drainage port 1, and the top end of the guide tube 1 is connected to the drainage port 1.

3. The multi-stage gas-liquid separator according to claim 1, characterized in that: The convex surface of the cover faces upwards, and a circle close to the edge is a concave structure and is provided with a second drainage port, and the top end of the second drainage pipe is connected to the second drainage port.

4. The multi-stage gas-liquid separator according to claim 1, characterized in that: The air outlet channel is a long strip opening opened on the cover, and a plurality of the air outlet channels are arranged in parallel at equal intervals.

5. The multi-stage gas-liquid separator according to claim 1, characterized in that: The deflection component includes an enclosure arranged around the edge of the air outlet channel, a support rod arranged on the top of the enclosure, and an inverted V-shaped cover plate supported by the support rod; a plurality of openings are provided on the enclosure; and the inverted V-shaped cover plate covers the top of the enclosure.

6. The multi-stage gas-liquid separator according to claim 5, characterized in that: The opening is a long strip-shaped opening arranged along the length direction of the enclosure, and the outer side wall of the enclosure is located above the opening and is provided with a baffle inclined downward.

7. The multi-stage gas-liquid separator according to claim 1, characterized in that: There are two secondary separation components, which are arranged vertically at intervals.

8. The multi-stage gas-liquid separator according to claim 1, characterized in that: A plurality of vertically arranged drainage plates are evenly distributed at the bottom of the wire mesh separator.

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