Gas-liquid separator

Abstract

The utility model discloses a gas-liquid separator which is characterized in that after entering the device, secondary steam is spirally conveyed to a rotational flow plate through a spiral plate, and in the process, heavy components such as foam, materials carried by abnormal working conditions and most of water are thrown out under the action of centrifugal force and flow out through a water outlet; the light component steam enters a rotational flow plate for secondary separation, entrained residual liquid is thrown out, and the liquid film is formed and then flows out from a water outlet; and the residual steam moves upwards and is separated for the third time through a silk screen, micron-sized entrainment is removed, and finally clean steam is discharged from a steam outlet. By means of the device, secondary steam can be subjected to three-stage separation by fully utilizing separation force such as centrifugal force and gravity, multi-stage and graded separation is achieved, the separation effect is good, the operation flexibility is large, the application range is wide, the anti-blocking capacity is high, therefore, the cleanliness of the steam is guaranteed, the device has the self-cleaning function, and the economical efficiency and the service life of the device can be guaranteed.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of water treatment equipment, in particular to a gas-liquid separator. Background Art

[0002] High-salinity water generated during production processes in chemical, pharmaceutical, metallurgical, and new energy materials industries is typically concentrated and desalinated using evaporation systems. To reduce steam consumption and lower operating costs, these companies typically opt for mechanical vapor recompression (MVR) evaporation systems. In this evaporation system, secondary steam generated in the crystallizer is separated by an external steam-water separator before entering a centrifugal steam compressor for compression and temperature increase. Due to the high speed of the steam compressor impeller, exceeding 20 rpm, extremely high steam cleanliness requirements are imposed. However, many materials, such as lithium carbonate, potassium chloride, and sodium bromide, currently generate a large number of bubbles during the evaporation process.

[0003] Existing vapor-liquid separation devices struggle to completely separate the secondary steam. Existing steam-water separators, such as the one disclosed in invention patent CN105233575B, can only achieve primary separation of both gas and liquid, and solid and liquid, but are unable to separate foaming secondary steam. The gas-liquid separation device disclosed in utility model patent CN211513456U can achieve secondary separation by separating the gas and liquid in the secondary steam and removing foam, but its effectiveness at capturing liquid is limited, and the foaming steam contains high-salt materials, which can cause blockage of the packing section over long periods of operation.

[0004] Therefore, a gas-liquid separator with better secondary steam separation effect and strong anti-blocking ability is needed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a gas-liquid separator.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A gas-liquid separator comprises a cylinder body 1 and a cylinder body 2 installed inside the cylinder body 1; a steam inlet is provided on the cylinder body 1, and a spiral plate for spirally transporting steam downward to the lower end of the cylinder body 2 is installed in the interlayer between the cylinder body 1 and the cylinder body 2; a swirl plate is provided at the lower end opening of the cylinder body 2, and a wire mesh is installed at the upper end opening.

[0008] As a further improvement of the above technical solution:

[0009] The steam inlet is located in the upper half of the cylinder body 1 and is tangent to the cross section of the cylinder body 1.

[0010] The spiral plate is fixedly mounted on the outer wall of the second cylinder body, and the edge of the spiral plate is 2mm to 4mm away from the inner wall of the first cylinder body.

[0011] The swirl plate includes a plurality of blades with an elevation angle of 25° to 30°.

[0012] The swirl plate further comprises a base with an edge in contact with the second cylinder, and a downcomer provided through the base, wherein the top end of the downcomer is located in the gap between the blade and the second cylinder.

[0013] The thickness of the wire mesh is 50 mm to 150 mm.

[0014] A steam outlet is provided at a top end of the cylinder, and the steam outlet extends inward by 30 mm to 70 mm.

[0015] It also includes a spray pipe that penetrates into the cylinder body 1, and the spray pipe is located between the steam outlet and the wire mesh.

[0016] The portion of the spray pipe located inside the barrel is arranged in an annular shape, and a plurality of spray holes with spray angles of 90° to 120° are opened on the annular portion.

[0017] The bottom end of the cylinder body 1 is provided with a drain outlet.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] This device can fully utilize centrifugal force, gravity and other separation forces to perform three-stage separation on the secondary steam coming from the outside, realizing multi-stage and graded separation. It has good separation effect, great operational flexibility, wide application scenarios, and strong anti-blocking ability, thereby ensuring the cleanliness of the steam. In addition, the device has a self-cleaning function, and its economy and service life can also be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the gas-liquid separator;

[0021] Figure 2 It is a top view schematic diagram of the gas-liquid separator.

[0022] The numbers in the figure indicate: 1. Cylinder 1; 11. Steam inlet; 12. Steam outlet; 13. Spray pipe; 14. Drain outlet; 2. Cylinder 2; 3. Spiral plate; 4. Swirl plate; 41. Blade; 42. Base; 43. Downcomer; 5. Wire mesh. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example

[0025] like Figure 1 and Figure 2 As shown, the gas-liquid separator of this embodiment comprises a cylinder 1 and a cylinder 2 mounted therein. A steam inlet 11 is provided on cylinder 1, and a spiral plate 3 is installed in the interlayer between cylinders 1 and 2 for spirally conveying steam downward to the lower end of cylinder 2. A swirl plate 4 is installed at the lower opening of cylinder 2, and a wire mesh 5 is installed at the upper opening. Cylinder 1 is also equipped with a drain port 14 and a steam outlet 12. Secondary steam generated by an external device such as an MVR evaporator enters cylinder 1 through the steam inlet 11, and is spirally transported by the spiral plate 3 along the annular gap between cylinder 1 and cylinder 2 to the swirl plate 4. During this process, heavy components such as foam, abnormal operating material entrainment, and most of the water are thrown onto the inner wall of cylinder 1 under the action of centrifugal force, forming a liquid film, which then flows downward along its inner wall to the bottom of cylinder 1 and then flows out through the drain port 14 set at the bottom of cylinder 1; the light component steam enters the swirl plate 4 for secondary separation, and the entrained residual liquid is thrown onto the inner wall of cylinder 2 by the action of the swirl plate 4, forming a liquid film, which then flows down along the inner wall of cylinder 2 and then discharges from cylinder 2 and flows out from the drain port 14; the remaining steam moves upward and passes through the wire mesh 5 for a third separation to remove micron-level entrainment, further purifying it to an ideal state, and finally discharged from the steam outlet 12. This device can fully utilize centrifugal force, gravity and other separation forces to carry out three-stage separation of secondary steam from the outside, realizing multi-stage and graded separation. It has good separation effect, great operational flexibility, wide application scenarios, and strong anti-blocking ability, thereby ensuring the cleanliness of the steam. In addition, the device has a self-cleaning function, and its economy and service life can also be guaranteed.

[0026] In this embodiment, steam inlet 11 is located in the upper half of cylinder 1 and is tangential to the cross-section of cylinder 1. Secondary steam enters steam inlet 11 along a tangential direction of cylinder 1, creating a swirling effect that ensures smooth entry of the material into the subsequent spiral plate 3 for primary separation, thus ensuring the feasibility and effectiveness of the device.

[0027] In this embodiment, spiral plate 3 is fixedly mounted around the outer wall of cylinder 2, with the edge of spiral plate 3 positioned 2 to 4 mm from the inner wall of cylinder 1. Spiral plate 3 is used to eject heavy components contained within the steam through centrifugal force. To ensure that the ejected liquid flows smoothly down the inner wall of cylinder 1, a gap of 2 to 4 mm is provided between the edge of spiral plate 3 and the inner wall of cylinder 1. This ensures that the liquid can flow smoothly and does not recombine with the steam, thereby further enhancing the effectiveness of the device.

[0028] In this embodiment, the swirl plate 4 also includes a base 42 whose edge is in contact with the cylinder 2, and a downcomer 43 provided through the base 42, the top of the downcomer 43 being located in the gap between the blades 41 and the cylinder 2; the swirl plate 4 includes a plurality of blades 41 with an elevation angle of 25° to 30°. After the light component steam enters the swirl plate 4 through the spiral plate 3, since the swirl plate 4 includes obliquely arranged blades 41, the light component steam will be accelerated when passing through the blades 41 due to the "narrow tube effect", so the residual liquid will be thrown out by the blades 41 to the inner wall of the cylinder 2. In order to prevent the liquid on the inner wall from flowing back into the blades 41 again and to prevent the high-speed steam from entraining the liquid on the inner wall upward and mixing it again, a gap is provided between the blades 41 and the cylinder 2, so that the liquid thrown on the inner wall can smoothly form a liquid film and flow down, and flow along the gap between the blades 41 and the cylinder 2 into the downcomer 43 set through the base 42, and then flow to the drain outlet 14 for discharge, thereby ensuring the effect of the swirl plate 4 and making the gas-liquid separation function of the device stronger.

[0029] In this embodiment, the thickness of the wire mesh 5 is 50 mm to 150 mm. The wire mesh 5 is a commercially available product, such as an SP-type top-mounted wire mesh, which can effectively remove micron-sized droplet residues, thereby further purifying the steam to an ideal state.

[0030] In this embodiment, a steam outlet 12 is provided at the top of the barrel 1, extending inward by 30 to 50 mm. To prevent splashing water droplets generated by periodic cleaning of the spray pipe 13 from flowing out of the steam-water separator along the inner wall of the barrel 1, the steam outlet 12 is extended 30 to 50 mm inward from the top of the barrel 1. This ensures cleanliness of the device while also preventing liquid leakage from the upper end.

[0031] This embodiment also includes a spray pipe 13 that penetrates the barrel 1. The spray pipe 13 is located between the steam outlet 12 and the screen 5. The portion of the spray pipe 13 located in the barrel 1 is annular, and a plurality of spray holes with spray angles of 90° to 120° are formed in the annular portion. Since this device is applicable to most situations involving two-phase separation, such as gas-liquid separation and oil-gas separation, the spray pipe 13 is provided to address possible contamination caused by different situations and to prevent residues from the previous use from affecting the next use. This allows for cleaning of structures such as the screen 5, swirl plate 4, and barrel 2 after use. The spray holes are set at a spray angle of 90° to 120° to ensure that a spray effect is produced on most parts of the device, thereby enhancing the device's service life and performance.

[0032] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A gas-liquid separator, characterized in that: The invention comprises a cylinder body (1) and a cylinder body (2) installed inside the cylinder body; the cylinder body (1) is provided with a steam inlet (11), and a spiral plate (3) for spirally conveying steam downward to the lower end of the cylinder body (2) is installed in the interlayer between the cylinder body (1) and the cylinder body (2); a swirl plate (4) is provided at the lower end opening of the cylinder body (2), and a wire mesh (5) is installed at the upper end opening.

2. The gas-liquid separator according to claim 1, characterized in that: The steam inlet (11) is located in the upper half of the cylinder body (1) and is tangent to the cross section of the cylinder body (1).

3. The gas-liquid separator according to claim 1, characterized in that: The spiral plate (3) is fixedly mounted on the outer wall of the second cylinder (2) in a surrounding manner, and the edge of the spiral plate (3) is 2 mm to 4 mm away from the inner wall of the first cylinder (1).

4. The gas-liquid separator according to claim 1, characterized in that: The swirl plate (4) includes a plurality of blades (41) with an elevation angle of 25° to 30°.

5. The gas-liquid separator according to claim 4, characterized in that: The swirl plate (4) further comprises a base (42) whose edge is in contact with the second cylinder (2), and a downcomer (43) passing through the base (42), wherein the top end of the downcomer (43) is located in the gap between the blade (41) and the second cylinder (2).

6. The gas-liquid separator according to claim 1, characterized in that: The thickness of the wire mesh (5) is 50 mm to 150 mm.

7. The gas-liquid separator according to claim 2, characterized in that: A steam outlet (12) is provided at the top of the cylinder (1), and the steam outlet (12) extends inward by 30 mm to 70 mm.

8. The gas-liquid separator according to claim 7, characterized in that: It also includes a spray pipe (13) that penetrates into the barrel (1), and the spray pipe (13) is located between the steam outlet (12) and the wire mesh (5).

9. The gas-liquid separator according to claim 8, characterized in that: The portion of the spray pipe (13) located inside the barrel (1) is arranged in an annular shape, and a plurality of spray holes with spray angles of 90° to 120° are provided on the annular portion.

10. The gas-liquid separator according to claim 1, characterized in that: A drain outlet (14) is provided at the bottom end of the cylinder body (1).

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