Gravity type gas-liquid separation device

Abstract

The utility model discloses a gravity type gas-liquid separation device, relates to chemical equipment, solves the problem of low separation efficiency of a single-stage tank body in the prior art, and adopts the technical scheme that the separation device comprises a separation tank body, the bottom of the separation tank body is provided with a liquid outlet, and the top is provided with an exhaust port; the device further comprises a feeding pipe, the feeding pipe is arranged in the tank body of the separation tank body, and the feeding pipe is provided with a discharging port; a separation unit is arranged below the discharge hole; the separation unit comprises a separation main body; the separation main body is conical; a separation tank with an upward opening is arranged in the separation main body; the separation tank is conical; a gas-liquid mixture flowing out of the discharge port enters the separation tank to be subjected to gas-liquid separation, and gas is discharged through the exhaust port; liquid in the conical cavity of the separation unit is gathered at the bottom of the tank body after overflowing and is discharged through a liquid outlet. The purposes of reducing the cost and improving the separation efficiency are achieved.

Description

Technical Field

[0001] This utility model relates to a chemical equipment, and more specifically, to a gravity-type gas-liquid separation device. Background Technology

[0002] In existing technologies, gas-liquid separators are mainly divided into five categories: cyclone separators separate liquid droplets through centrifugal force, but are ineffective for tiny droplets and low-density gases; gravity settling tanks rely on density differences for natural settling, resulting in low efficiency and requiring long residence times; filter separators offer high precision but are prone to clogging; centrifugal separators are highly efficient but consume a lot of energy and are complex to maintain; and packed tower separators are prone to flooding and are sensitive to flow rates. Among these, multi-stage gravity settling tanks are a common solution, achieving separation through the sequential settling of tanks in series. However, they have the following drawbacks: complex equipment, requiring complex piping and control systems for multiple tanks, leading to high costs, large footprint, and increased risk of leakage; difficult maintenance, with impurities easily accumulating inside the tanks, requiring frequent shutdowns for cleaning; and the multi-stage series structure means that maintenance of a single tank affects the overall operation. These shortcomings make them unsuitable for the demands of efficient, compact, and highly safe industrial applications (such as sodium hypochlorite generators), necessitating structural optimization and technological innovation. Utility Model Content

[0003] Firstly, the purpose of this utility model is to provide a gravity-type gas-liquid separation device. By setting a separation unit in the separation device, the residence time of the gas-liquid mixture in the separation tube is extended, allowing sufficient time for gas and liquid to separate, thereby reducing the number of separation tanks used and lowering costs.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a gravity-type gas-liquid separation device, the separation device including a separation tank; a drain port is provided at the bottom of the separation tank and an exhaust port is provided at the top; it also includes a feed pipe, which is disposed inside the tank of the separation tank and has an outlet; a separation unit is disposed below the outlet.

[0005] The separation unit includes a separation body, which is conical in shape; the separation body has an upward-opening separation tank inside; the separation tank is conical in shape; the gas-liquid mixture flowing out of the outlet enters the separation tank for gas-liquid separation, and the gas is discharged through the exhaust port; the liquid overflows from the conical cavity of the separation unit and collects at the bottom of the tank, and is discharged through the drain port.

[0006] Furthermore, the separation tank includes a gas collecting hood, a liquid collecting tank, and a separation cylinder; the gas collecting hood is detachably installed above the separation cylinder, and the exhaust port is located at the top of the gas collecting hood; the liquid collecting tank is detachably installed at the bottom of the separation cylinder, and the drain port is located below the liquid collecting tank.

[0007] Furthermore, the feed pipe is vertically installed inside the separator; the outlet of the feed pipe is located at the top of the feed pipe.

[0008] The separation unit further includes an installation part; the installation part is located at the lower end of the separation body; the installation part has an installation cavity adapted to the shape of the feed pipe; the separation unit is mounted on the feed pipe through the installation part; the installation cavity cooperates with the feed pipe to prevent liquid from flowing out of the installation cavity.

[0009] Furthermore, it includes multiple separation units; the multiple separation units are arranged sequentially from top to bottom on the feed pipe.

[0010] Furthermore, the separation unit also includes an overflow section; the overflow section is disposed above the separation body of the separation unit; the overflow section is cylindrical; the size of the overflow section is adapted to the opening above the separation body; an overflow port is provided on the overflow section; the overflow port is inverted triangular in shape.

[0011] Furthermore, the cone-shaped separation tank has a cone angle of α; 90°≤α≤120°.

[0012] Furthermore, a permeable plate is provided inside the separation cylinder; the permeable plate is located above the feed inlet; and permeable holes are also provided on the permeable plate.

[0013] Furthermore, a flow divider is provided above the discharge port; the flow divider is provided with multiple flow divider channels.

[0014] In summary, this utility model has the following beneficial effects:

[0015] By adopting the gas-liquid separation device provided by this utility model, the cost of the gas separation device is reduced on the one hand, and the separation device of this solution has high separation efficiency and low gas residue, thus improving efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an embodiment.

[0017] Figure 2 This is a schematic diagram of the separation unit.

[0018] Figure 3 This is a schematic diagram of a breathable panel.

[0019] In the diagram: 1. Separation device; 11. Separation unit; 111. Separation body; 112. Mounting part; 113. Overflow part; 1131. Overflow port; 12. Gas collection hood; 121. Exhaust port; 13. Separation cylinder; 14. Liquid collection tank; 141. Liquid discharge port; 15. Feed pipe; 151. Diverter; 16. Air vent plate; 161. Air vent. Detailed Implementation

[0020] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component. This "connection" is not limited to a fixed connection or a movable connection; the specific connection method should be determined based on the specific technical problem to be solved.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] Example 1:

[0025] A gravity-type gas-liquid separation device 1 includes a separation tank; the bottom of the separation tank is provided with a drain port 141 and the top is provided with an exhaust port 121; it also includes a feed pipe 15, which is disposed inside the tank of the separation tank and has a discharge port; a separation unit 11 is disposed below the discharge port.

[0026] The separation unit 11 includes a separation body 111, which is conical in shape. The separation body 111 has an upward-opening separation tank inside. The separation tank is also conical. The gas-liquid mixture flowing out of the outlet enters the separation tank for gas-liquid separation, and the gas is discharged through the exhaust port 121. After the liquid overflows from the conical cavity of the separation unit 11, it accumulates at the bottom of the tank and is discharged through the drain port 141.

[0027] The gas-liquid mixture enters the separator tank through the feed pipe 15. The outlet of the feed pipe 15 is located inside the separator tank, and the gas-liquid mixture flowing out of the outlet enters the separator unit 11 located below the outlet. The separator unit 11 has a conical main body 111, with an upward-opening conical separator pool inside. The outlet is located above the separator pool. When the gas-liquid mixture enters the separator pool, it is close to the middle, then flows along the wall of the separator pool towards the outer edge, and finally overflows the separator pool. During this process, the gas-liquid mixture has sufficient time to complete the separation. Compared to a cylindrical separator pool, the conical separator pool avoids the formation of local vortex zones at the bottom of the liquid mixture, preventing the problem of tiny bubbles being unable to escape. At the same time, the separation of the gas and liquid phases is closely related to the length of the gas escape path in the liquid; the conical separator pool makes the gas escape path gradually shorter along the flow path of the gas-liquid mixture, which is more conducive to gas escape. Compared with existing multi-stage tank technology where the gas-liquid mixture is separated within the tank, this technology improves the separation efficiency of a single tank by extending the liquid residence time within a single tank through the installation of a separation unit 11.

[0028] In one possible embodiment, for better collection of gas and liquid, the separation tank includes a gas collecting hood 12, a liquid collecting tank 14, and a separation cylinder 13. The gas collecting hood 12 is detachably mounted above the separation cylinder 13, with an exhaust port 121 located at the top of the gas collecting hood 12. The liquid collecting tank 14 is detachably mounted at the bottom of the separation cylinder 13, with a drain port 141 located below the liquid collecting tank. Optionally, the gas collecting hood 12 and the liquid collecting tank 14 are connected to the separation cylinder 13 via flanges; a sealing ring is provided between the flanges. Optionally, the interfaces of the gas collecting hood 12, the separation cylinder 13, and the liquid collecting tank 14 are machined into threads (e.g., external threads + internal threads), and connected by rotating and tightening; polytetrafluoroethylene (PTFE) raw material tape is wrapped around the thread surface or anaerobic sealant is applied; a flat sealing surface is provided at the end of the thread, which is then pressed together with a rubber gasket or a metal washer. The detachable connection method facilitates cleaning of the tank.

[0029] In one possible embodiment, the feed pipe 15 is vertically disposed within the tank body of the separator; the outlet of the feed pipe 15 is located at the top of the feed pipe 15; wherein, the separator unit 11 further includes a mounting portion 112; the mounting portion 112 is disposed at the lower end of the separator body 111; the mounting portion 112 is provided with a mounting cavity adapted to the shape of the feed pipe 15; the separator unit 11 is disposed on the feed pipe 15 through the mounting portion 112; the mounting cavity cooperates with the feed pipe 15 to prevent liquid from flowing out of the mounting cavity. Optionally, an elastic sleeve is provided in the mounting cavity, the inner and outer sides of the elastic sleeve are respectively pressed against the feed pipe 15 and the mounting cavity, and the mounting portion 112 is fixed to the feed pipe 15 by friction; at the same time, the elastic element plays a sealing role to prevent liquid from flowing out of the mounting cavity; optionally, the elastic sleeve is made of rubber. Optionally, the mounting part 112 is interference-fitted with the feed pipe 15; during installation, the mounting part 112 is heated to slightly enlarge the diameter of the mounting cavity, then fitted into the feed pipe 15 and cooled to achieve the interference fit. Optionally, the feed pipe is glued to the mounting part. Preferably, the lower end of the mounting part 112 is provided with a transition slope, so that the mounting part 112 smoothly transitions to the feed pipe 15.

[0030] By directly mounting the separation unit 11 onto the feed pipe 15, the overall structure of the device is simplified, reducing material costs and installation complexity, eliminating the need for additional support frames or fasteners. Using the feed pipe 15 as the mounting carrier for the separation unit 11 avoids spatial conflicts between the separation unit 11 and other components of the tank, resulting in a more compact equipment layout. Simultaneously, the outer wall of the feed pipe 15 serves as a guide. Specifically, in the electrolysis of brine to prepare sodium hypochlorite solution, the overall flow rate and velocity are not very high during continuous production due to limitations in electrolysis efficiency. After the electrolyte overflows from the edge of the separation tank, its adhesive properties cause it to flow downwards along the conical outer surface of the separation body 111, and then downwards through the mounting part 112 and the outer surface of the feed pipe 15 until it reaches the accumulation tank 14. During this process, the liquid flows along the outer walls of the separation body, mounting part 112, and feed pipe 15, preventing liquid from freely falling from a height, splashing, generating bubbles, and reducing separation efficiency.

[0031] In one possible embodiment, the separation device 1 includes multiple separation units 11; the multiple separation units 11 are sequentially arranged from top to bottom on the feed pipe 15. By sequentially arranging multiple separation units 11 on the feed pipe 15, the flow path of the gas-liquid mixture is increased, enabling multi-stage separation of the gas-liquid mixture. Each stage of the separation unit 11 can process the gas-liquid mixture to a certain extent, thereby improving the overall separation efficiency. This multi-stage separation method helps to achieve more thorough gas-liquid separation. Preferably, the bottom end of the mounting part 112 of the previous stage is level with or lower than the opening of the separation tank of the next stage separation unit 11. In this scheme, the liquid flows along the separation body to the outer surface of the mounting part 112 and finally flows into the separation tank of the next stage. Since the separation tank stores liquid, the liquid flows along the surface of the structure during this process, avoiding liquid splashing.

[0032] In one possible embodiment, the separation unit 11 further includes an overflow section 113; the overflow section 113 is disposed above the separation body 111 of the separation unit 11; the overflow section 113 is cylindrical; the size of the overflow section 113 is adapted to the size of the opening above the separation body 111; the overflow section 113 is provided with an overflow port 1131; the overflow port 1131 is inverted triangular in shape. Preferably, the overflow section 113 is provided with multiple overflow ports 1131; the overflow ports 1131 are evenly distributed on the overflow section 113. The inverted triangular overflow port 1131 design of the overflow section 113 ensures that when the liquid level in the separation tank reaches the height of the overflow port 1131, it preferentially overflows from the tip of the inverted triangle. The overflow port 1131 divides the liquid into small streams, and the liquid overflows evenly from the inverted triangular opening, avoiding turbulence caused by local concentrated discharge and further reducing the risk of splashing. Multiple overflow ports 1131 are evenly distributed, making the liquid overflow more uniform.

[0033] Preferably, the cone angle of the conical separation tank is α; 90°≤α≤120°. This design ensures sufficient depth in the separation tank, increasing the liquid residence time and allowing enough time for gas-liquid escape. It also balances the escape path distance of the bubbles, enabling them to detach more quickly. Preferably, the cone angle of the conical outer wall of the separation body is equal to that of the separation tank, allowing the liquid to adhere to the outer wall of the separation body and preventing dripping.

[0034] Preferably, a vent plate 16 is provided inside the separator 13; the vent plate 16 is positioned above the feed inlet; the vent plate 16 is also provided with vent holes 161. Gas enters the gas collection hood 12 through the separator 13. Preferably, the vent holes 161 are located at the edge of the vent plate 16; the feed inlet is aligned with the center of the vent plate 16. This design prevents the mixture from entering the gas collection hood 12 from the feed inlet.

[0035] Preferably, a diversion connector 151 is provided above the discharge port; the diversion connector 151 is provided with multiple diversion channels. Multiple diversion channels avoid turbulence caused by localized concentrated discharge and reduce the risk of splashing.

[0036] In one possible embodiment, the separation device 1 is used in a sodium hypochlorite generator that produces less than or equal to 370 L of sodium hypochlorite solution per hour. The separation cylinder 13 has a diameter of 110–140 mm; the separator height is 700–1000 mm; the separation unit 11 (including an overflow section 113, a separation body, and a mounting section 112) has a height of 70–100 mm, and the overflow section 113 has a diameter of 65–80 mm. A total of 5–6 separation units 11 are arranged within the separation cylinder 13. Calculations show that the gas content at the outlet is reduced by 99.9% compared to the gas content at the inlet.

[0037] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A gravity-type gas-liquid separation device, characterized by: The separation device comprises a separation tank body; a liquid outlet is arranged at the bottom of the separation tank body, and an exhaust port is arranged at the top of the separation tank body; a feeding pipe is arranged in the tank body of the separation tank body, and the feeding pipe is provided with a discharge port; a separation unit is arranged below the discharge port; The separation unit comprises a separation main body, which is conical; an upwardly open separation pool is arranged in the separation main body; the separation pool is conical.

2. A gravity type gas-liquid separation device according to claim 1, characterized in that: The separation tank body comprises a gas collection cover, a liquid accumulation groove and a separation cylinder; the gas collection cover is detachably arranged above the separation cylinder, and the exhaust port is arranged at the top of the gas collection cover; the liquid accumulation groove is detachably arranged at the bottom of the separation cylinder, and the liquid outlet is arranged below the liquid accumulation groove.

3. A gravity type gas-liquid separation device according to claim 1, characterized in that: The feeding pipe is vertically arranged in the tank body of the separation tank; the discharge port of the feeding pipe is located at the top of the feeding pipe. The separation unit further comprises a mounting portion; the mounting portion is arranged at the lower end of the separation main body; a mounting cavity corresponding to the shape of the feeding pipe is arranged in the mounting portion; the separation unit is arranged on the feeding pipe through the mounting portion; the mounting cavity cooperates with the feeding pipe to prevent liquid from flowing out of the mounting cavity.

4. A gravity type gas-liquid separation device according to claim 2, characterized in that: The separation device comprises a plurality of separation units; the plurality of separation units are sequentially arranged on the feeding pipe from top to bottom.

5. A gravity gas-liquid separator according to claim 4, characterized in that: The separation unit further comprises an overflow portion; the overflow portion is arranged above the separation main body of the separation unit; the overflow portion is in the shape of a cylinder; the size of the overflow portion is adapted to the size of the opening above the separation main body; an overflow port is arranged on the overflow portion; the overflow port is in the shape of an inverted triangle.

6. A gravity gas-liquid separator according to claim 5, characterized in that: The conical separation pool has a taper angle α; 90°≤α≤120°.

7. A gravity type gas-liquid separation device according to claim 5, characterized in that: A gas permeable plate is arranged in the separation cylinder; the gas permeable plate is arranged above the feeding port; the gas permeable plate is further provided with gas permeable holes.

8. A gravity type gas-liquid separation device according to claim 5, characterized in that: A flow distribution connector is arranged above the discharge port; a plurality of flow distribution channels are arranged on the flow distribution connector.

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