Torch liquid separation tank system

Abstract

The utility model relates to the technical field of torch liquid separation tanks, in particular to a torch liquid separation tank system which comprises a liquid separation tank body, a gas inlet pipe, a gas outlet pipe and a blow-off pipe are arranged on the liquid separation tank body, the gas outlet pipe is used for being connected with a torch, and the torch liquid separation tank system further comprises a pipeline which is connected with the blow-off pipe and comprises a first bending portion and a second bending portion. The utility model relates to a torch liquid separation tank, which comprises a first bending part, a second bending part, a third bending part, a liquid level contact switch, a water replenishing mechanism and an anti-siphon pipe, the first bending part is connected with a vertical section of the first bending part, the third bending part is connected with a sewage pool, the liquid level contact switch is connected with a vertical section of the second bending part, the water replenishing mechanism is connected with the first bending part, and the anti-siphon pipe is connected with a horizontal section of the second bending part. The liquid level meter is prevented from being blocked, the water attack phenomenon is avoided, and the drainage efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of torch liquid separation tanks, in particular to a torch liquid separation tank system. Background Art

[0002] The flare system plays a key role in the petrochemical industry. It is an important facility to ensure production safety. The system is mainly responsible for safely burning the dangerous flammable gases released in emergency situations, such as when an accident occurs in the production unit. In addition, it also undertakes the task of handling the flammable gases generated in the conventional production process that have no utilization value but have to be discharged. However, when these gases are transported from the device area to the flare facility, they may carry liquid particles due to cooling or their own process characteristics. If no measures are taken, the presence of these droplets may lead to dangerous "fire rain" phenomena. Therefore, the separator tank, as a key component in the flare system, plays a vital role. It ensures the safe and stable operation of the flare system by effectively separating the droplets in the gas.

[0003] The existing accident flare separation tank condensate is removed by the accident flare separation tank shielded pump, and the discharged liquid is sent to sewage for discharge treatment. Therefore, the existing original design of the conveying method is used less frequently, and because the condensate in the flare contains dust and other impurities, it is easy to block the liquid level meter, which is easy to cause the liquid level meter to fail to indicate, resulting in the "water hammer" phenomenon caused by the failure to discharge the liquid level in time.

[0004] For example, Chinese patent: CN217367546U discloses a flare liquid separator, which uses a first metal mesh and a third metal mesh to remove condensate from the flare exhaust gas, and enters a gas-liquid separator, and again removes condensate from the flare exhaust gas through a second metal mesh. Finally, the condensate on the first metal mesh, the second metal mesh and the third metal mesh flows into a liquid collecting bag and is discharged through a discharge pipe. However, the condensate is collected in the liquid collecting bag and discharged. Since the condensate contains impurities such as dust, when the liquid collecting bag is blocked by impurities, the condensate cannot be discharged and blocks the liquid level meter.

[0005] Therefore, the utility model provides a torch liquid separation tank system. Utility Model Content

[0006] The purpose of the utility model is to propose a flare liquid separation tank system, which solves the problem that the liquid level meter in the existing flare liquid separation tank is easily blocked, realizes that the liquid level meter will not be blocked, avoids the occurrence of water hammer, and greatly improves the drainage efficiency.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a flare liquid separation tank system, including a liquid separation tank body, the liquid separation tank body is provided with an air inlet pipe, an air outlet pipe and a sewage pipe, the air inlet pipe is used to pass the flare gas, the air outlet pipe is used to connect the flare, and also includes:

[0008] A pipeline connected to the sewage pipe, the pipeline comprising:

[0009] A first bending portion, connected to the sewage pipe, comprising a vertical section and a horizontal section;

[0010] a second bending portion, connected to the first bending portion;

[0011] A third bending portion is connected to the second bending portion, and includes a vertical section and a horizontal section, and the horizontal sections of the third bending portion and the first bending portion are lower than the horizontal section of the second bending portion, so that the condensate inside the pipeline forms a water seal to seal the gas;

[0012] The third bending portion is connected to a sewage pool, a submersible pump is provided in the sewage pool, and the submersible pump is connected to a second sewage treatment mechanism;

[0013] A liquid level contact switch connected to the second bent portion vertical section and used to detect the height of the water level in the pipeline;

[0014] A water replenishing mechanism connected to the first bending portion, for replenishing water inside the pipeline when the water level inside the pipeline is lower than the height of the liquid level contact switch;

[0015] The anti-siphon pipe is connected to the horizontal section of the second bent portion and communicated with the atmosphere to prevent the condensate in the liquid separation tank from being emptied by a siphon phenomenon.

[0016] Preferably, the first bending portion, the second bending portion and the third bending portion are respectively U-shaped structures, the U-shaped structure of the second bending portion is arranged inverted, and the highest point of the horizontal section of the second bending portion exceeds the connection point between the liquid separation tank body and the sewage pipe.

[0017] Preferably, a sewage pump is connected to the sewage pipe, and sewage in the liquid separation tank and the pipeline is discharged through the sewage pump. The sewage pump is connected to a drain pipe, and the drain pipe is connected to the first sewage treatment mechanism.

[0018] Preferably, the sewage pump is a shielded pump.

[0019] Preferably, the anti-siphon tube is provided with a connection port for connecting to an external cleaning device to clean the pipeline and the liquid separation tank.

[0020] Preferably, a second valve is connected to one end of the first bending portion connected to the sewage pipe.

[0021] Preferably, the third bending portion is connected to a third valve.

[0022] Beneficial effects of the utility model:

[0023] 1. The utility model provides a pipeline on the liquid separation tank body, through which the poisonous gas is sealed inside, thereby preventing the leakage of the poisonous gas, and then replenishes water inside the pipeline through a water replenishing mechanism, which has double protection and greatly improves the safety factor. At the same time, the inverted S-shaped pipeline can ensure that there is no liquid accumulation in the liquid separation tank of the flare that causes an accident, thereby eliminating the water hammer phenomenon to the greatest extent.

[0024] 2. The utility model provides an anti-siphon pipe and a connecting port on the pipeline, and uses the anti-siphon pipe to flush the inside of the pipeline to remove internal scale, thereby preventing the pipeline from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the whole of the utility model.

[0026] In the figure: 1. liquid separation tank; 11. air inlet pipe; 12. air outlet pipe; 13. sewage pipe; 14. torch; 2. sewage pump; 21. drainage pipe; 22. first sewage treatment mechanism; 3. pipeline; 31. third valve; 32. sewage tank; 33. submersible pump; 34. second sewage treatment mechanism; 35. first bending part; 36. second bending part; 37. third bending part; 4. liquid level contact switch; 5. water replenishment mechanism; 6. anti-siphon tube; 61. connection port; 7. first valve; 8. second valve. DETAILED DESCRIPTION

[0027] The following is a further description of the method of use of the present invention in conjunction with the accompanying drawings and specific implementation methods.

[0028] like Figure 1 As shown, a flare liquid separation tank system includes a liquid separation tank body 1, on which an air inlet pipe 11, an air outlet pipe 12 and a sewage pipe 13 are provided, wherein the air inlet pipe 11 is used to introduce gas from a flare 14, and the air outlet pipe 12 is used to connect the flare 14, and further includes:

[0029] The medium in the torch 14 is highly toxic, but has a low pressure and is insoluble in water. The water seal provides conditions for isolating the toxic gas in the torch 14.

[0030] Pipeline 3 is connected to the sewage pipe 13, and the pipeline 3 includes:

[0031] The flare 14 drainage pipe 21 is installed at an underground elevation of -3.2 meters, and the bend pipe is led out to a ground elevation of 1.6 meters. The total height of 4.8 meters of the liquid level difference is used to block the synthesis gas in the flare 14. The rear pipeline 3 is buried and sent to the sewage pool 32 at a perimeter of 11.58 meters.

[0032] The first bending portion 35 is connected to the sewage pipe 13 and includes a vertical section and a horizontal section;

[0033] A second bending portion 36 connected to the first bending portion 35;

[0034] The third bending portion 37 is connected to the second bending portion 36, and includes a vertical section and a horizontal section. The horizontal sections of the third bending portion 37 and the first bending portion 35 are lower than the horizontal section of the second bending portion 36, so that the condensate inside the pipeline 3 forms a water seal to seal the gas;

[0035] The calculation design utilizes the water seal to seal the toxic gas inside the equipment to avoid leakage of toxic gas, and adds a liquid level contact switch 4 and a water replenishment interlock to provide double protection and increase the safety factor.

[0036] The third bending portion 37 is connected to a sewage pool 32, a submersible pump 33 is provided in the sewage pool 32, and the submersible pump 33 is connected to a second sewage treatment mechanism 34;

[0037] A liquid level contact switch 4, connected to the vertical section of the second bent portion 36, for detecting the height of the water level in the pipeline 3;

[0038] At the bend, at 0.4m (the foundation elevation of the flare liquid separation tank), the added liquid level contact switch 4 is introduced into the central control DCS. A water replenishment interlock is also added to automatically replenish water when the liquid level is missing.

[0039] A water replenishing mechanism 5 is connected to the first bending portion 35, and replenishes water into the pipeline 3 when the water level inside the pipeline 3 is lower than the height of the liquid level contact switch 4;

[0040] The water replenishment mechanism 5 is controlled by a valve, wherein the regulating valve can be controlled by the central control room. It is interlocked with the newly added liquid level contact switch 4 to trigger water shortage to replenish water, and can also be replenished manually remotely.

[0041] The anti-siphon pipe 6 is connected to the horizontal section of the second bent portion 36 and communicated with the atmosphere to prevent the condensate in the liquid separation tank 1 from being emptied by a siphon phenomenon.

[0042] The anti-siphon pipe 6 is added at the top of the elbow to prevent siphoning. The pipeline 3 is 0.4 meters long and has a 90° elbow at the end. A joint is left at the end of the elbow to facilitate the connection of water and compressed air from the public station. The inside of the pipeline 3 is flushed.

[0043] Adding a connection port 61 to the anti-siphon pipe 6 facilitates regular flushing of the pipeline 3 to eliminate scaling and blockage. The pipeline design ensures that there is no liquid accumulation in the liquid separation tank of the flare 14 that causes the accident. Water hammer is eliminated to the greatest extent.

[0044] The first bending portion 35 , the second bending portion 36 and the third bending portion 37 are respectively U-shaped structures. The U-shaped structure of the second bending portion 36 is arranged upside down, and the highest point of the horizontal section of the second bending portion 36 exceeds the connection point between the liquid separation tank body 1 and the sewage pipe 13 .

[0045] The sewage pipe 13 is connected to a sewage pump 2 , through which the sewage in the liquid separation tank 1 and the pipeline 3 is discharged. The sewage pump 2 is connected to a drainage pipe 21 , and the drainage pipe 21 is connected to a first sewage treatment mechanism 22 .

[0046] The sewage pump 2 is a shielded pump.

[0047] The anti-siphon pipe 6 is provided with a connection port 61 for connecting with an external cleaning device to clean the pipeline 3 and the liquid separation tank 1 .

[0048] A second valve 8 is connected to one end of the first bending portion 35 connected to the sewage pipe 13 to control the discharge of sewage in the pipeline 3 when the pipeline 3 is cleaned.

[0049] The third bending portion 37 is connected with a third valve 31 for controlling the discharge of sewage.

[0050] Working process: After the gas is passed from the air inlet pipe 11 into the liquid separation tank body 1, the gas will be discharged from the air outlet pipe 12 and burned through the torch 14. The water content in the gas is relatively large, usually 50% of the water. After entering the liquid separation tank body 1, condensate will be produced and enter the interior of the sewage pipe 13 by its own gravity. At this time, the first valve 7 on the sewage pipe 13 is in a closed state, and the second valve 8 is in an open state, and the condensate will enter the interior of the pipeline along the sewage pipe 13.

[0051] It should be noted that before the gas is introduced into the liquid separation tank body 1, first, a certain amount of water needs to be added to the pipeline 3 through the water replenishment mechanism 5, and due to the structure of the pipeline 3, the principle of a communicating vessel is formed, so that the introduced gas will not leak through the pipeline 3, thereby forming a water seal to seal the poisonous gas inside the liquid separation tank body 1. Therefore, when the generated condensate enters the pipeline 3, the water level inside the pipeline 3 will rise. As the water level rises, the internal water level will exceed the highest horizontal position at the anti-siphon pipe 6, thereby flowing to the other end of the pipeline 3, and flowing into the sewage pool 32 through the third valve 31. The sewage inside the sewage pool 32 will be pumped by the submersible pump 33, and the sewage will be pumped into the second sewage treatment mechanism 34 for treatment.

[0052] At the same time, when the water level inside the pipeline 3 is lower than the specified water level, the liquid level contact switch 4 will open, so that the water replenishment mechanism 5 can continuously replenish water into the pipeline 3 to prevent the water inside the pipeline 3 from decreasing, thereby causing the toxic gas leakage inside the liquid separation tank 1.

[0053] When cleaning the pipeline 3, it is necessary to connect other cleaning equipment to the connection port 61 on the anti-siphon pipe 6, and introduce clean water into the pipeline 3 through the anti-siphon pipe 6. The water flows into the pipeline 3 and moves to the two ends of the pipeline 3. At this time, the third valve 31 is in an open state, and the cleaned water flows into the sewage pool 32 through the third valve 31; the second valve 8 at the other end is also in an open state, and the first valve 7 is in a closed state. Clean water will flow into the sewage pipe 13 through the pipeline 3, and flow into the liquid separation tank body 1 through the sewage pipe 13, thereby cleaning the pipeline 3 and the liquid separation tank body 1. After cleaning, the first valve 7 will be opened, and the water inside the liquid separation tank body 1 and the pipeline 3 will be pumped out through the sewage pump 2, and discharged into the first sewage treatment mechanism 22 through the drain pipe 21 for treatment, thereby completing the cleaning process of the entire pipeline 3 and the liquid separation tank body 1.

[0054] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flare liquid separation tank system, comprising a liquid separation tank body (1), the liquid separation tank body (1) being provided with an air inlet pipe (11), an air outlet pipe (12) and a sewage pipe (13), the air inlet pipe (11) being used to introduce gas from a flare (14), the air outlet pipe (12) being used to connect to the flare (14), characterized in that: Also includes: A pipeline (3) is connected to the sewage pipe (13), and the pipeline (3) comprises: A first bent portion (35), connected to the sewage discharge pipe (13), comprising a vertical section and a horizontal section; A second bent portion (36) connected to the first bent portion (35); A third bending portion (37) is connected to the second bending portion (36), comprising a vertical section and a horizontal section, and the horizontal sections of the third bending portion (37) and the first bending portion (35) are lower than the horizontal section of the second bending portion (36), so that the condensate inside the pipeline (3) forms a water seal to seal the gas; The third bent portion (37) is connected to a sewage pool (32), a submersible pump (33) is provided in the sewage pool (32), and the submersible pump (33) is connected to a second sewage treatment mechanism (34); A liquid level contact switch (4), connected to the vertical section of the second bent portion (36), and used to detect the height of the water level in the pipeline (3); a water replenishing mechanism (5) connected to the first bent portion (35) for replenishing water into the pipeline (3) when the water level inside the pipeline (3) is lower than the height of the liquid level contact switch (4); The anti-siphon pipe (6) is connected to the horizontal section of the second bent portion (36) and communicates with the atmosphere to prevent the condensate in the liquid separation tank (1) from being emptied due to a siphon phenomenon.

2. A flare liquid separation tank system according to claim 1, characterized in that: The first bent portion (35), the second bent portion (36) and the third bent portion (37) are respectively U-shaped structures; the U-shaped structure of the second bent portion (36) is arranged inverted, and the highest point of the horizontal section of the second bent portion (36) exceeds the connection point between the liquid separation tank body (1) and the sewage discharge pipe (13).

3. A flare liquid separation tank system according to claim 1, characterized in that: The sewage pipe (13) is connected to a sewage pump (2), through which sewage in the liquid separation tank (1) and the pipeline (3) is discharged; the sewage pump (2) is connected to a drainage pipe (21), and the drainage pipe (21) is connected to a first sewage treatment mechanism (22).

4. A flare liquid separation tank system according to claim 3, characterized in that: The sewage pump (2) is a shielded pump.

5. A flare liquid separation tank system according to claim 3, characterized in that: The anti-siphon pipe (6) is provided with a connection port (61) for connecting to an external cleaning device to clean the pipeline (3) and the liquid separation tank (1).

6. A flare liquid separation tank system according to claim 1, characterized in that: A second valve (8) is connected to one end of the first bent portion (35) that is connected to the sewage discharge pipe (13).

7. A flare liquid separation tank system according to claim 1, characterized in that: The third bent portion (37) is connected to a third valve (31).

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