Torch system

Abstract

The invention discloses a torch system, and belongs to the technical field of gas treatment.The torch system comprises a first pipeline, a first torch, a second pipeline, a second torch and a first switching pipeline, and the first torch is connected with the gas outlet end of the first pipeline; the second torch is connected with the gas outlet end of the second pipeline; the first switching pipeline is connected with the first pipeline and the second pipeline. The first pipeline is configured to enable the first pipeline to be communicated with the second torch when the first pipeline is not communicated with the first torch, and to enable the second pipeline to be communicated with the first torch when the second pipeline is not communicated with the second torch. By arranging the first switching pipeline to connect the first pipeline and the second pipeline, when the first torch or the second torch is subjected to troubleshooting, flare gas of different pipelines can be switched to a normally-working torch for combustion, torch switching and overhauling are facilitated, continuous production of the production device is guaranteed, and the production efficiency is improved. And the production efficiency and the safety can be effectively improved.

Description

Technical Field

[0001] The present application belongs to the technical field of gas processing, and in particular relates to a flare system. Background Art

[0002] Flares are commonly used flare gas safety discharge devices in industrial fields such as petroleum, chemical, and natural gas. They are mainly used to treat combustible gases discharged by production equipment during startup, shutdown, and accident conditions. Since the plant-wide flare system is more complex, the discharge volume of combustible gases under the startup and shutdown conditions and accident conditions of the equipment fluctuates greatly and the composition is more complex. In order to minimize the impact of flare failures on the equipment and ensure the safe and reliable operation of each flare emission system, the plant-wide flare system will set up multiple flare systems according to the discharge pressure and emission volume. Each flare operates independently of each other. When a flare system fails for maintenance, the equipment corresponding to the flare system needs to be shut down, which seriously affects normal production efficiency. Summary of the invention

[0003] Purpose of the invention: The embodiment of the present application provides a flare system, which aims to solve the problem that when multiple flare systems are independently operated, the normal production efficiency is affected when a flare system fails to be repaired.

[0004] Technical solution: A flare system described in an embodiment of the present application includes:

[0005] First pipeline;

[0006] a first torch connected to the gas outlet end of the first pipeline;

[0007] Second pipeline;

[0008] a second torch connected to the gas outlet end of the second pipeline;

[0009] The first transfer pipeline is connected to the first pipeline and the second pipeline respectively; the first pipeline is configured to connect the first pipeline with the second torch when the first pipeline is not connected to the first torch, and to connect the second pipeline with the first torch when the second pipeline is not connected to the second torch.

[0010] In some embodiments, a pressure regulating system is further included, the pressure regulating system comprising:

[0011] A first output pipeline is provided at a side of the first transfer pipeline away from the first flare and connected to the first pipeline, and is used to adjust the pressure in the first pipeline;

[0012] The second output pipeline is arranged on a side of the first transfer pipeline away from the second torch and connected to the second pipeline for adjusting the pressure in the second pipeline.

[0013] In some embodiments,

[0014] The first pipeline includes a first liquid separation tank and a first water seal tank, the output end of the first liquid separation tank is connected to the input end of the first water seal tank, and the output end of the first water seal tank is connected to the first torch;

[0015] The second pipeline includes a second liquid separation tank and a second water seal tank, the output end of the second liquid separation tank is connected to the input end of the second water seal tank, and the output end of the second water seal tank is connected to the second torch;

[0016] One end of the first transfer pipe is connected between the first liquid separation tank and the first water seal tank, and the other end of the first transfer pipe is connected between the second liquid separation tank and the second water seal tank; the first output pipeline is connected to the first liquid separation tank, and the second output pipeline is connected to the second liquid separation tank.

[0017] In some embodiments, the first transfer line is provided with a first switch valve, and the first switch valve is a two-way valve for controlling the on-off of the first transfer line.

[0018] In some embodiments,

[0019] The first pipeline further includes a second switch valve, and the second switch valve is arranged between the first transfer pipeline and the first water seal tank;

[0020] The second pipeline further includes a third switch valve, and the third switch valve is arranged between the first transfer pipeline and the second water seal tank.

[0021] In some embodiments,

[0022] The first pipeline further includes a first pressure detection device, and the first pressure detection device is arranged between the first liquid separation tank and the first transfer pipeline;

[0023] The second pipeline further includes a second pressure detection device, and the second pressure detection device is arranged between the second liquid separation tank and the first transfer pipeline.

[0024] In some embodiments, the flare system further comprises:

[0025] The third pipeline;

[0026] a third torch connected to a gas outlet end of the third pipeline;

[0027] Fourth pipeline;

[0028] a fourth torch connected to the gas outlet end of the fourth pipeline;

[0029] A second transfer pipe is connected to the second pipeline and the third pipeline respectively; the second transfer pipe is configured to connect the third pipeline with the second flare when the third pipeline is not connected with the third flare;

[0030] The third transfer pipe is connected to the fourth pipe and the first pipe respectively; the third transfer pipe is configured to connect the fourth pipe with the first torch when the fourth pipe is not connected with the fourth torch.

[0031] In some embodiments, the pressure regulating system further comprises:

[0032] A third output pipeline is arranged on a side of the second transfer pipeline away from the third torch and connected to the third pipeline, and is used to adjust the pressure in the third pipeline;

[0033] The fourth output pipeline is arranged on a side of the third pipeline away from the fourth torch and connected to the fourth pipeline, and is used for adjusting the pressure in the fourth pipeline.

[0034] In some embodiments,

[0035] The third pipeline includes a third liquid separation tank and a third water seal tank, the output end of the third liquid separation tank is connected to the input end of the third water seal tank, and the output end of the third water seal tank is connected to the third torch;

[0036] The fourth pipeline includes a fourth liquid separation tank and a fourth water seal tank, the output end of the fourth liquid separation tank is connected to the input end of the fourth water seal tank, and the output end of the fourth water seal tank is connected to the fourth torch;

[0037] One end of the second transfer pipe is connected between the third liquid separation tank and the third water seal tank, and the other end of the second transfer pipe is connected between the second liquid separation tank and the third switch valve;

[0038] One end of the third transfer pipe is connected between the fourth liquid separation tank and the fourth water seal tank, and the other end of the third transfer pipe is connected between the first liquid separation tank and the second switch valve;

[0039] The third output pipeline is connected to the third liquid separation tank, and the fourth output pipeline is connected to the fourth liquid separation tank.

[0040] In some embodiments,

[0041] The second transfer pipeline is provided with a fourth switch valve, and the fourth switch valve is a one-way valve that conducts along the third pipeline toward the second pipeline;

[0042] The third transfer pipeline is provided with a fifth switch valve, and the fifth switch valve is a one-way valve that conducts along the fourth pipeline toward the first pipeline.

[0043] In some embodiments,

[0044] The third pipeline further includes a sixth switch valve and a third pressure detection device, the sixth switch valve is arranged between the second transfer pipeline and the third water seal tank, and the third pressure detection device is arranged between the third liquid separation tank and the second transfer pipeline;

[0045] The fourth pipeline also includes a seventh switch valve and a fourth pressure detection device. The seventh switch valve is arranged between the third transfer pipeline and the fourth water seal tank. The fourth pressure detection device is arranged between the fourth liquid separation tank and the third transfer pipeline.

[0046] In some embodiments, the pressure regulating system further comprises:

[0047] an eighth switch valve, arranged in the first output pipeline;

[0048] a ninth switch valve, arranged in the second output pipeline;

[0049] a tenth switch valve, arranged in the third output pipeline;

[0050] The eleventh switch valve is arranged in the fourth output pipeline.

[0051] In some embodiments, the flare system also includes a control system, which is electrically connected to the eighth switch valve, the ninth switch valve, the tenth switch valve, the eleventh switch valve, the first pressure detection device, the second pressure detection device, the third pressure detection device and the fourth pressure detection device, respectively.

[0052] In some embodiments, the first pipeline is a high-pressure toxic flare gas pipeline, the second pipeline is a low-pressure toxic flare gas pipeline, the third pipeline is a low-pressure non-toxic flare gas pipeline, and the fourth pipeline is a high-pressure non-toxic flare gas pipeline. The first flare and the second flare are both elevated flares, and the third flare and the fourth flare are both ground flares.

[0053] In some embodiments, inner diameters of the first transfer tube, the second transfer tube, and the third transfer tube are all greater than 200 mm.

[0054] Beneficial effect: Compared with the prior art, a flare system in an embodiment of the present application includes a first pipeline, a first torch, a second pipeline, a second torch and a first transfer pipeline, the first flare is connected to the gas outlet end of the first pipeline; the second torch is connected to the gas outlet end of the second pipeline; the first transfer pipeline is connected to the first pipeline and the second pipeline respectively; wherein the first pipeline is configured to connect the first pipeline with the second torch when the first pipeline is not connected to the first torch, and to connect the second pipeline with the first torch when the second pipeline is not connected to the second torch. The present application connects the first pipeline and the second pipeline by setting up a first transfer pipeline. When the first flare fails to maintain, the flare gas input from the first pipeline is transported to the second flare for combustion. Alternatively, when the second flare fails to maintain, the flare gas input from the second pipeline is transported to the first flare for combustion. This ensures that when a certain flare fails or is under maintenance, the flare gas from different pipelines can be switched to the same flare for combustion, thereby realizing cluster flare switching and maintenance, ensuring continuous production of the production equipment, and effectively improving production efficiency and safety compared to the existing situation of stopping production for maintenance due to flare failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0056] Figure 1 It is a structural schematic diagram of a flare system according to an embodiment of the present application;

[0057] Figure 2 It is a structural schematic diagram of a flare system provided with a pressure regulating system according to an embodiment of the present application;

[0058] Figure 3 It is a structural schematic diagram of a torch system provided with a pressure regulating system and a pressure detecting device according to an embodiment of the present application;

[0059] Figure 4 is a structural schematic diagram of another flare system according to an embodiment of the present application;

[0060] Figure 5 It is a control principle diagram of the control system of an embodiment of the present application.

[0061] Figure numerals: 1, first pipeline; 101, first liquid separation tank; 102, first water seal tank; 103, second switch valve; 104, first pressure detection device; 2, first torch; 3, second pipeline; 301, second liquid separation tank; 302, second water seal tank; 303, third switch valve; 304, second pressure detection device; 4, second torch; 5, first transfer pipeline; 501, first switch valve; 6, pressure regulating system; 601, first output pipeline; 602, second output pipeline; 603, third output pipeline; 604, fourth output pipeline; 605, eighth Switch valve; 606, the ninth switch valve; 607, the tenth switch valve; 608, the eleventh switch valve; 7, the third pipeline; 701, the third liquid separation tank; 702, the third water seal tank; 703, the sixth switch valve; 704, the third pressure detection device; 8, the third torch; 9, the fourth pipeline; 901, the fourth liquid separation tank; 902, the fourth water seal tank; 903, the seventh switch valve; 904, the fourth pressure detection device; 10, the fourth torch; 11, the second transfer pipeline; 111, the fourth switch valve; 12, the third transfer pipeline; 121, the fifth switch valve; 13, the control system. DETAILED DESCRIPTION

[0062] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0063] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined. In the description of this application, "vertical" means completely vertical at 90° or almost completely vertical, for example, an angle within the range of 80° to 100° is considered vertical. Similarly, "parallel" means completely parallel or almost completely parallel, for example, an angle within 10° of completely parallel is considered parallel.

[0064] The flare is a commonly used flare gas safety discharge device in the petroleum, chemical, natural gas and other industrial fields. It is mainly used to treat the combustible gas discharged by the company's production equipment during the start-up, shutdown and accident conditions. The design, manufacturing and daily maintenance of the flare system have high technical requirements, which are not only related to the environmental protection compliance of the company, but also affect the safe and stable operation and production efficiency of the company. The flare is usually divided into an elevated flare and a ground flare, which are suitable for different application scenarios. The elevated flare can usually handle the combustible gas of almost all emission devices and working conditions, and has no special requirements for the toxicity of the emission gas. The flue gas is discharged into the upper atmosphere after combustion through the flare head; the ground flare is usually suitable for treating combustible gases with moderate toxicity or below (referred to as non-toxic). After combustion in the burner, it is discharged into the atmosphere through the furnace. Compared with the elevated flare, it has excellent environmental protection characteristics and convenient maintenance.

[0065] In recent years, with the advancement of the integrated construction of equipment, the plant-wide flare system has become more complex, and the combustible gas emissions under the start-up and shutdown conditions and accident conditions of the equipment have large fluctuations and more complex components. In order to minimize the impact of flare failures on the equipment and ensure the safe and reliable operation of each flare emission system, the plant-wide flare system will set up multiple flare systems according to the emission pressure and emission volume. Each flare system operates independently of each other. When a flare system fails for maintenance, the corresponding equipment of the flare system needs to be shut down, which will reduce the production efficiency of the enterprise.

[0066] In view of this, an embodiment of the present application provides a flare system to solve the above-mentioned problems.

[0067] Please refer to Figure 1-Figure 4 An embodiment of the present application provides a flare system, including a first pipeline 1, a first flare 2, a second pipeline 3, a second flare 4 and a first transfer pipe 5, the first flare 2 is connected to the gas outlet end of the first pipeline 1; the second flare 4 is connected to the gas outlet end of the second pipeline 3; the first transfer pipe 5 is connected to the first pipeline 1 and the second pipeline 3 respectively; wherein the first pipeline 1 is configured to: when the first pipeline 1 is not connected to the first flare 2, the first pipeline 1 is connected to the second flare 4, and when the second pipeline 3 is not connected to the second flare 4, the second pipeline 3 is connected to the first flare 2.

[0068] In an embodiment of the present application, a first transfer pipe 5 is provided to connect the first pipeline 1 and the second pipeline 3. When the first flare 2 fails to maintain, the flare gas input from the first pipeline 1 is transported to the second flare 4 for combustion treatment. Alternatively, when the second flare 4 fails to maintain, the flare gas input from the second pipeline 3 is transported to the first flare 2 for combustion treatment. This ensures that when a certain flare fails or is under maintenance, the flare gases from different pipelines can be switched to the same flare for combustion, thereby realizing cluster flare switching and maintenance, ensuring continuous production of the production equipment, and effectively improving production efficiency and safety compared to the existing situation of stopping production for maintenance due to flare failures.

[0069] Specifically, in the embodiment of the present application, the first pipeline 1 can be a high-pressure flare gas pipeline, and the second pipeline 3 can be a low-pressure flare gas pipeline, in which case both high-pressure flare gas and low-pressure flare gas can be processed simultaneously. The first flare 2 and the second flare 4 can both be elevated flares, in which case both the first flare 2 and the second flare 4 can process toxic gases or non-toxic gases. Of course, the first flare 2 and the second flare 4 can also be ground flares, in which case most of the flares process combustible gases with moderate toxicity or below (referred to as non-toxic). In an embodiment of the present application, when the first flare 2 is not connected to the first pipeline 1 (i.e., the first flare 2 is under maintenance), the first pipeline 1 can be connected to the second flare 4 through the first transfer pipeline 5; when the second flare 4 is not connected to the second pipeline 3 (i.e., the second flare 4 is under maintenance), the second pipeline 3 can be connected to the first flare 2 through the first transfer pipeline 5; when the first flare 2 is connected to the first pipeline 1 and the second flare 4 is connected to the second pipeline 3, the first transfer pipeline 5 is not connected to the first pipeline 1 and the second pipeline 3, respectively.

[0070] Specifically, in the embodiment of the present application, when the first flare 2 and the second flare 4 are operating normally, the first transfer pipe 5 is in the off state, and the first pipeline 1 and the second pipeline 3 are not connected. When the first flare 2 fails and needs to be repaired, the first flare 2 will not be able to work normally. At this time, it is necessary to disconnect the first flare 2 from the first pipeline 1, that is, to shut down the pipeline connecting the first pipeline 1 and the first flare 2. In this case, in order to ensure the normal production of the production device connected to the first pipeline 1, the first transfer pipe 5 can be opened to connect the first pipeline 1 and the second pipeline 3, and the flare gas in the first pipeline 1 is transferred to the second pipeline 3 through the first transfer pipe 5, so that the flare gas in the first pipeline 1 and the flare gas in the second pipeline 3 converge and are transported to the second flare 4 and burned together. At this time, the fault repair of the first flare 2 and the normal production of the production device can be carried out simultaneously, effectively ensuring production efficiency and safety. Similarly, when the second flare 4 fails and needs to be repaired, the second flare 4 will not be able to work normally. At this time, it is necessary to disconnect the second flare 4 from the second pipeline 3, that is, to shut down the pipeline connecting the second pipeline 3 and the second flare. In this case, in order to ensure the normal production of the production device connected to the second pipeline 3, the first transfer pipeline 5 can be opened to connect the first pipeline 1 and the second pipeline 3, and the flare gas in the second pipeline 3 is transferred to the first pipeline 1 through the first transfer pipeline 5, so that the flare gas in the second pipeline 3 and the flare gas in the first pipeline 1 converge and are transported to the first flare 2 and burned together. At this time, the fault repair of the second flare 4 and the normal production of the production device can be carried out simultaneously, effectively ensuring production efficiency and safety. From the above, it can be seen that this flare system layout method can realize the temporary switching of different types of flares and the safe handling of flare gas.

[0071] It should be noted that in the embodiments of the present application, the first pipeline 1 can be a high-pressure toxic flare gas pipeline, the second pipeline 3 can be a low-pressure toxic flare gas pipeline, and the first flare 2 and the second flare 4 can both be elevated flares; or, the first pipeline 1 can be a high-pressure non-toxic flare gas pipeline, the second pipeline 3 can be a low-pressure non-toxic flare gas pipeline, the first flare 2 and the second flare 4 can both be elevated flares, or can both be ground flares, or can be one of the elevated flares and the other of the ground flares; or, the first pipeline 1 can be a high-pressure toxic flare gas pipeline, the second pipeline 3 can be a low-pressure non-toxic flare gas pipeline, the first flare 2 can be an elevated flare, and the second flare 4 can be a ground flare; or, the first pipeline 1 can be a high-pressure non-toxic flare gas pipeline, the second pipeline 3 can be a low-pressure toxic flare gas pipeline, the first flare 2 can be an elevated flare, and the second flare 4 can be a ground flare.

[0072] Please refer to Figure 2-Figure 4In some embodiments, a pressure regulating system 6 is further included. The pressure regulating system 6 includes a first output pipeline 601 and a second output pipeline 602. The first output pipeline 601 is arranged on the side of the first transfer pipeline 5 away from the first flare 2 and is connected to the first pipeline 1 for regulating the pressure in the first pipeline 1; the second output pipeline 602 is arranged on the side of the first transfer pipeline 5 away from the second flare 4 and is connected to the second pipeline 3 for regulating the pressure in the second pipeline 3.

[0073] In the embodiment of the present application, by setting up the pressure regulating system 6, the gas pressure in the first pipeline 1 and / or the second pipeline 3 can be adjusted accordingly to ensure that the flare gas in the first pipeline 1 smoothly enters the first flare 2 for combustion, and the flare gas in the second pipeline 3 smoothly enters the second flare 4 for combustion. At the same time, when the first flare 2 or the second flare 4 is under fault maintenance, the gas pressure in the first pipeline 1 and the second pipeline 3 can be adjusted to a balanced state to ensure that the flare gas in the first pipeline 1 and the second pipeline 3 enters the normally working flare for combustion. Therefore, the present application designs a pressure regulating system 6, which can not only adjust the flare gas pressure in the first pipeline 1 and the second pipeline 3 when the first flare 2 and the second flare 4 are operating normally, so that the flare gas can reach the corresponding flares smoothly; but also can adjust the gas pressure of the flare gas in the first pipeline 1 and the second pipeline 3 to a balanced value when the first flare 2 or the second flare 4 fails to be repaired, to ensure that the flare gases in the first pipeline 1 and the second pipeline 3 can reach the target flare for combustion after mixing, thereby avoiding pipeline damage or the problem of flare gas not being able to converge normally due to the large pressure difference in the two pipelines.

[0074] It can be understood that in the embodiment of the present application, by setting up the first delivery pipeline and the second delivery pipeline, on the one hand, nitrogen can be used to purge the first pipeline 1 and the second pipeline 3, and after the equipment is shut down, the residual flare gas in the pipeline is purged into the torch for combustion, thereby ensuring that the torch can process the flare gas cleanly; on the other hand, the present application can be implemented to adjust the gas pressure in the first pipeline 1 and the second pipeline 3 when the flare is temporarily switched, thereby ensuring that the first pipeline 1 can smoothly transport the flare gas to the second pipeline 3, or the second pipeline 3 can smoothly transport the flare gas to the first pipeline 1, thereby ensuring that the flare gas is smoothly processed and avoiding damage to the pipeline.

[0075] Specifically, the pressure regulating system 6 may be a nitrogen purge system, wherein the first output pipeline 601 is connected to the first pipeline 1, and is used to introduce nitrogen into the first pipeline 1, purge the first pipeline 1 with nitrogen, and adjust the pressure in the first pipeline 1; the second output pipeline 602 is connected to the second pipeline 3, and is used to introduce nitrogen into the second pipeline 3, purge the second pipeline 3 with nitrogen, and adjust the pressure in the second pipeline 3. At the same time, by providing the pressure regulating system 6, the purge problem of the switched flare gas pipeline and the pressure mismatch problem between the first pipeline 1 and the second pipeline 3 can be solved.

[0076] like Figure 1-Figure 4 As shown, in some embodiments, the first pipeline 1 includes a first liquid separating tank 101 and a first water seal tank 102, the output end of the first liquid separating tank 101 is connected to the input end of the first water seal tank 102, and the output end of the first water seal tank 102 is connected to the first torch 2; the second pipeline 3 includes a second liquid separating tank 301 and a second water seal tank 302, the output end of the second liquid separating tank 301 is connected to the input end of the second water seal tank 302, and the output end of the second water seal tank 302 is connected to the second torch 4; one end of the first transfer pipeline 5 is connected between the first liquid separating tank 101 and the first water seal tank 102, and the other end of the first transfer pipeline 5 is connected between the second liquid separating tank 301 and the second water seal tank 302; the first output pipeline 601 is connected to the first liquid separating tank 101, and the second output pipeline 602 is connected to the second liquid separating tank 301.

[0077] In the embodiment of the present application, the first liquid separator tank 101 and the second liquid separator tank 301 are used to remove the liquid phase in the flare gas entering the flare gas pipeline, thereby avoiding the problem of the liquid phase affecting the combustion of the flare gas; the first water seal tank 102 and the second water seal tank 302 are used to prevent the flare gas below a certain pressure from entering the flare, thereby preventing the problem of smoldering in the flare when the flare gas flow rate is small, and avoiding the flare gas from burning in the pipeline, thereby effectively ensuring safety and ensuring the service life of the torch.

[0078] The present application connects one end of the first transfer pipe 5 between the first liquid separating tank 101 and the first water seal tank 102 of the first pipeline 1, and the other end of the first transfer pipe 5 between the second liquid separating tank 301 and the second water seal tank 302 of the second pipeline 3. When the flare connected to the first pipeline 1 and the second pipeline 3 is temporarily switched, the first liquid separating tank 101 and the second liquid separating tank 301 can still be in a working state, and the flare gas introduced into the first pipeline 1 and the second pipeline 3 can be separated and the liquid phase can be removed. Compared with direct switching from the pipeline inlet, the liquid separation pressure of the liquid separating tank on a single pipeline can be reduced, thereby ensuring the working stability of the liquid separating tank. In addition, by setting the first output pipeline 601 to be connected to the first liquid separating tank 101 and the second output pipeline 602 to be connected to the second liquid separating tank 301, it is possible to achieve mixing of nitrogen and flare gas when the flare gas is separated and buffered in the liquid separating tank, which is convenient for adjusting the pressure of the flare gas in the pipeline. At the same time, the liquid separating tank can also be used to separate the nitrogen to remove the liquid phase, thereby further ensuring safety. In addition, at this time, the first output pipeline 601 and the second output pipeline 602 are located at the front end of the flare gas pipeline (the first pipeline 1 and the second pipeline 3), which is convenient for the flare gas pipeline.

[0079] Please refer to Figure 1-Figure 4 In some embodiments, the first transfer line 5 is provided with a first switch valve 501 , which is a two-way valve for controlling the on-off of the first transfer line 5 .

[0080] In the embodiment of the present application, the first switch valve 501 is provided in the first transfer line 5 to realize the on-off control of the first transfer line 5. The first switch valve 501 is a two-way valve, which can realize the flare gas in the first pipeline 1 to flow to the second pipeline 3 and finally reach the second flare 4 for combustion, or the flare gas in the second pipeline 3 to flow to the first pipeline 1 and finally reach the first flare 2 for combustion. By providing the first switch valve 501 with a two-way switch, the temporary switching of the first flare 2 and the second flare 4 connected to the first pipeline 1 and the second pipeline 3 can be realized, so that the production device can be smoothly produced when a certain flare fails to be repaired, thereby improving production efficiency.

[0081] It should be noted that since the flare gas pressures in the first pipeline 1 and the second pipeline 3 may be different, the nitrogen is output to the corresponding pipeline through the aforementioned pressure regulating system 6, and the first switch valve 501 is opened after the pressures in the first pipeline 1 and the second pipeline 3 are adjusted to match each other. At this time, the flare gases from the two lines can be smoothly converged and reach the corresponding flare for combustion, effectively avoiding damage to the low-pressure pipeline.

[0082] Please refer to Figure 1-Figure 4In some embodiments, the first pipeline 1 also includes a second switch valve 103, which is arranged between the first transfer pipeline 5 and the first water seal tank 102; the second pipeline 3 also includes a third switch valve 303, which is arranged between the first transfer pipeline 5 and the second water seal tank 302.

[0083] In the embodiment of the present application, by setting the second switch valve 103, the first flare 2 can be shut down in time when the first flare 2 fails to be repaired, and the second switch valve 103 is forced to shut down to prevent the flare gas in the first pipeline 1 from continuing to be transported to the first flare 2. At this time, the first flare 2 can be repaired; at this time, the flare gas in the first pipeline 1 enters the second pipeline 3 through the first transfer pipeline 5 and is transported to the second flare 4. Correspondingly, by setting the third switch valve 303, the second pipeline 3 can be shut off to prevent the flare gas in the second pipeline 3 from being transported to the second flare 4. The flare gas in the second pipeline 3 is transported to the first pipeline 1 through the first transfer pipeline, and finally burns through the first flare 2. Therefore, by setting the second switch valve 103 and the third switch valve 303, the corresponding flare can be deactivated and the flare can be temporarily switched, which is conducive to repairing the faulty flare without stopping the production device.

[0084] Please refer to Figure 3 and Figure 4 In some embodiments, the first pipeline 1 also includes a first pressure detection device 104, which is disposed between the first liquid separating tank 101 and the first transfer pipe 5; the second pipeline 3 also includes a second pressure detection device 304, which is disposed between the second liquid separating tank 301 and the first transfer pipe 5.

[0085] In the embodiment of the present application, a first pressure detection device 104 is provided to detect the air pressure in the first pipeline 1, and a second pressure detection device 304 is provided to detect the air pressure in the second pipeline 3. The settings of the two facilitate the adjustment of the air pressure in the first pipeline 1 and the second pipeline 3. This makes it convenient to adjust the torch gas pressure in the pipeline accordingly when the torch is temporarily switched, thereby achieving smooth switching of the torch.

[0086] like Figure 4As shown, in some embodiments, the flare system also includes a third pipeline 7, a third flare 8, a fourth pipeline 9, a fourth flare 10, a second transfer pipe 11 and a third transfer pipe 12, the third flare 8 is connected to the gas outlet end of the third pipeline 7; the fourth flare 10 is connected to the gas outlet end of the fourth pipeline 9; the second transfer pipe 11 is respectively connected to the second pipeline 3 and the third pipeline 7; the second transfer pipe 11 is configured to: connect the third pipeline 7 with the second flare 4 when the third pipeline 7 is not connected to the third flare 8; the third transfer pipe 12 is respectively connected to the fourth pipeline 9 and the first pipeline 1; the third transfer pipe 12 is configured to: connect the fourth pipeline 9 with the first flare 2 when the fourth pipeline 9 is not connected to the fourth flare 10.

[0087] Among them, when the third pipeline 7 is not connected with the third flare 8, the third pipeline 7 can be connected with the second flare 4 through the second transfer pipe 11; when the fourth pipeline 9 is not connected with the fourth flare 10, the fourth pipeline 9 can be connected with the first flare 2 through the third transfer pipe 12; when the third pipeline 7 is connected with the third flare 8 and the second pipeline 3 is connected with the second flare 4, the second transfer pipe 11 is not connected with the second pipeline 3 and the third pipeline 7; when the fourth pipeline 9 is connected with the fourth flare 10 and the first pipeline 1 is connected with the first flare 2, the third transfer pipe 12 is not connected with the first pipeline 1 and the fourth pipeline 9.

[0088] In the embodiment of the present application, by setting the third pipeline 7 and the fourth pipeline 9 to cooperate with the first pipeline 1 and the second pipeline 3, different types of flare gases are processed respectively, forming a fully covered flare system, which is conducive to large-scale production and manufacturing, and can fully cover the processing of various types of flare gases generated in the production and manufacturing process, ensure production safety, and reduce pollution to the environment. The second pipeline 3 and the third pipeline 7 are connected by the second transfer pipeline 11, so that the second pipeline 3 and the third pipeline 7 can be switched and connected between the second flare 4 and the third flare 8, which is convenient for non-stop maintenance when one of the second flare 4 and the third flare 8 fails. The fourth pipeline 9 and the first pipeline 1 are connected by the third transfer pipeline 12, so that the fourth pipeline 9 and the first pipeline 1 can be switched and connected between the fourth flare 10 and the first flare 2, which is convenient for non-stop maintenance when one of the fourth flare 10 and the first flare 2 fails. In this way, combined switching and connection between the four flare clusters are realized, which improves the risk resistance of the entire flare system, is more flexible and safer, and can fully ensure uninterrupted production of the production line when a flare fails.

[0089] Furthermore, in some embodiments, the first pipeline 1 is a high-pressure toxic flare gas pipeline, the second pipeline 3 is a low-pressure toxic flare gas pipeline, the third pipeline 7 is a low-pressure non-toxic flare gas pipeline, the fourth pipeline 9 is a high-pressure non-toxic flare gas pipeline, the first flare 2 and the second flare 4 are both elevated flares, and the third flare 8 and the fourth flare 10 are both ground flares.

[0090] Specifically, in the embodiment of the present application, the first pipeline 1 may be fed with high-pressure toxic flare gas, the first flare 2 may be an elevated flare (which can handle toxic flare gas and non-toxic flare gas), the second pipeline 3 may be fed with low-pressure toxic flare gas, the second flare 4 may be an elevated flare (which can handle toxic flare gas and non-toxic flare gas), the third pipeline 7 may be fed with high-pressure non-toxic flare gas, the third flare 8 may be a ground flare (which handles non-toxic flare gas), the fourth pipeline 9 may be fed with low-pressure non-toxic flare gas, and the fourth flare 10 may be a ground flare (which handles non-toxic flare gas). In this way, full coverage of the types of combustible gases in the production line is achieved. At the same time, by using the first transfer pipeline 5, the second transfer pipeline 11 and the third transfer pipeline 12, temporary switching between multiple torches can be achieved, which is convenient for ensuring the continued operation of the production equipment when a certain torch fails to be repaired, and maintenance without stopping work is achieved, effectively ensuring production efficiency during torch failure repair.

[0091] It is understandable that when the first flare 2 or the second flare 4 fails, the first transfer line 5 is used to connect the first pipeline 1 and the second pipeline 3. At this time, the first flare 2 and the second flare 4 are both elevated flares, and the toxic flare gas is switched between the first flare 2 and the second flare 4, which is convenient for handling the toxic flare gas and avoiding the ground transportation of the toxic flare gas phase, so it is safer. When the third flare 8 fails, since the low-pressure toxic elevated flare gas is introduced into the second pipeline 3, and the low-pressure non-toxic ground flare gas is introduced into the third pipeline 7, both of which are low-pressure flare gases, the pressure difference between the two is relatively small, and it is easier to adjust to a matching pressure. Therefore, the flare gas in the third pipeline 7 can be transported to the second pipeline 3 through the second transfer line 11, and burned through the second flare 4. At this time, the difficulty of pressure regulation can be reduced, which is conducive to production implementation and effectively shortens the flare switching time. When the fourth flare 10 fails, since the fourth pipeline 9 is filled with high-pressure non-toxic ground flare gas, the flare gas in the fourth pipeline 9 can be transported to the first pipeline 1 through the third transfer pipeline 12 and burned through the first flare 2.

[0092] It can be understood that through the setting of the above-mentioned pipeline layout, when the ground flare fails, the flare gas of the corresponding pipeline will be transported to the elevated flare; when the elevated flare fails, the flare gas of the corresponding pipeline will also be transported to the elevated flare. At this time, the toxic flare gas of the elevated flare can be prevented from being transported to the ground, and the safety of the production environment can be guaranteed while ensuring safe production without stopping work when the flare fails.

[0093] like Figure 4 As shown, in some embodiments, the pressure regulating system 6 also includes a third output pipeline 603 and a fourth output pipeline 604. The third output pipeline 603 is arranged on the side of the second transfer pipeline 11 away from the third flare 8, and is connected to the third pipeline 7, and is used to regulate the pressure in the third pipeline 7; the fourth output pipeline 604 is arranged on the side of the third pipeline 7 away from the fourth flare 10, and is connected to the fourth pipeline 9, and is used to regulate the pressure in the fourth pipeline 9.

[0094] In the embodiment of the present application, by setting up the third delivery pipeline and the fourth delivery pipeline, on the one hand, nitrogen can be used to purge the third pipeline 7 and the fourth pipeline 9, and after the equipment is shut down, the residual flare gas in the pipeline is purged into the torch for combustion, thereby ensuring that the torch can process the flare gas cleanly; on the other hand, the present application can be implemented to adjust the gas pressure in the third pipeline 7 and the fourth pipeline 9 when the flare is temporarily switched, thereby ensuring that the third pipeline 7 can smoothly transport the flare gas to the second pipeline 3, and / or the fourth pipeline 9 can smoothly transport the flare gas to the first pipeline 1, thereby ensuring that the flare gas is smoothly processed and avoiding damage to the pipeline.

[0095] like Figure 4 As shown, in some embodiments, the third pipeline 7 includes a third liquid separation tank 701 and a third water seal tank 702, the output end of the third liquid separation tank 701 is connected to the input end of the third water seal tank 702, and the output end of the third water seal tank 702 is connected to the third torch 8; the fourth pipeline 9 includes a fourth liquid separation tank 901 and a fourth water seal tank 902, the output end of the fourth liquid separation tank 901 is connected to the input end of the fourth water seal tank 902, and the output end of the fourth water seal tank 902 is connected to the fourth torch 10; a second transfer pipeline 11 One end of the third liquid separator tank 701 is connected to the third water seal tank 702, and the other end of the second transfer pipe 11 is connected between the second liquid separator tank 301 and the third switch valve 303; one end of the third transfer pipe 12 is connected between the fourth liquid separator tank 901 and the fourth water seal tank 902, and the other end of the third transfer pipe 12 is connected between the first liquid separator tank 101 and the second switch valve 103; the third output pipeline 603 is connected to the third liquid separator tank 701, and the fourth output pipeline 604 is connected to the fourth liquid separator tank 901.

[0096] In an embodiment of the present application, the third liquid separator tank 701 and the fourth liquid separator tank 901 are used to remove the liquid phase in the flare gas, the third water seal tank 702 is used to prevent the flare gas with a pressure less than the third water seal tank 702 from entering the third flare 8 and causing smoldering, and the fourth water seal tank 902 is used to prevent the flare gas with a pressure less than the fourth water seal tank 902 from entering the fourth flare 10 and causing smoldering. By arranging the second transfer pipe 11 to connect between the third liquid separating tank 701 and the third water seal tank 702, and between the second liquid separating tank 301 and the second water seal tank 302; the third transfer pipe 12 is connected between the fourth liquid separating tank 901 and the fourth water seal tank 902, and between the first liquid separating tank 101 and the first water seal tank 102; at this time, the flare gas after separation can be directly intercepted to avoid the situation where part of the flare gas in the pipeline is blocked by the water seal tank and cannot smoothly enter the second pipeline 3 when the third flare 8 or the fourth flare 10 fails; at this time, the flare gas does not need to overcome the pressure of the water seal tank to enter the other connected pipeline, and reach the corresponding flare for combustion.

[0097] like Figure 4 As shown, in some embodiments, the second transfer line 11 is provided with a fourth switch valve 111, which is a one-way valve that conducts along the third pipeline 7 toward the second pipeline 3; the third transfer line 12 is provided with a fifth switch valve 121, which is a one-way valve that conducts along the fourth pipeline 9 toward the first pipeline 1.

[0098] In the embodiment of the present application, a fourth switch valve 111 is provided, which can cut off the second transfer pipe 11 when the third flare 8 works normally, so as to realize the separate transportation of the second pipeline 3 and the third pipeline 7; when the third flare 8 fails, the fourth switch valve 111 is opened, so as to realize the connection between the third pipeline 7 and the second pipeline 3 through the second transfer pipe 11, so as to realize the transportation of the flare gas in the third pipeline 7 to the second pipeline 3. A fifth switch valve 121 is provided, which can cut off the third transfer pipe 12 when the fourth flare 10 works normally, so as to realize the separate transportation of the fourth pipeline 9 and the first pipeline 1; when the fourth flare 10 fails, the fifth switch valve 121 is opened, so as to realize the connection between the fourth pipeline 9 and the first pipeline 1 through the third transfer pipe 12, so as to realize the transportation of the flare gas in the fourth pipeline 9 to the first pipeline 1.

[0099] It should be noted that the fourth switch valve 111 and the fifth switch valve 121 are both one-way valves. At this time, they can only allow the third pipeline 7 to transport flare gas to the second pipeline 3, and the fourth pipeline 9 to transport flare gas to the first pipeline 1. They can prevent the second pipeline 3 from transporting flare gas to the third pipeline 7, and the first pipeline 1 from transporting flare gas to the fourth pipeline 9, thereby preventing the toxic gases in the first pipeline 1 and the second pipeline 3 from entering the third pipeline 7 and the fourth pipeline 9.

[0100] like Figure 4As shown, in some embodiments, the third pipeline 7 also includes a sixth switch valve 703 and a third pressure detection device 704, the sixth switch valve 703 is arranged between the second transfer line 11 and the third water seal tank 702, and the third pressure detection device 704 is arranged between the third liquid separation tank 701 and the second transfer line 11; the fourth pipeline 9 also includes a seventh switch valve 903 and a fourth pressure detection device 904, the seventh switch valve 903 is arranged between the third transfer line 12 and the fourth water seal tank 902, and the fourth pressure detection device 904 is arranged between the fourth liquid separation tank 901 and the third transfer line 12.

[0101] In the embodiment of the present application, by setting the sixth switch valve 703, the connection between the third liquid separation tank 701 and the third water seal tank 702 can be directly cut off when the third flare 8 fails, and the second transfer line 11 can be used to transfer the flare gas to the second pipeline 3; by setting the seventh switch valve 903, the connection between the fourth liquid separation tank 901 and the fourth water seal tank 902 can be directly cut off when the fourth flare 10 fails, and the third transfer line 12 can be used to transfer the flare gas to the first pipeline 1. In this way, the third pipeline 7 and the fourth pipeline 9 are directly forced to cut off the pipeline between the corresponding water seal tanks, which is convenient for realizing temporary switching of the flare, reducing the difficulty of transferring and transporting the flare gas, and ensuring safety.

[0102] In addition, in the embodiment of the present application, by providing a third pressure detection device 704 and a fourth pressure detection device 904, it is possible to detect the air pressure in the third pipeline 7 and the fourth pipeline 9. When switching the torch, it is possible to determine whether nitrogen needs to be introduced and the amount of nitrogen to be introduced based on the air pressure in the third pipeline 7 and the fourth pipeline 9, thereby adjusting the air pressure in the third pipeline 7 and the fourth pipeline 9 to achieve matching of the air pressures of the third pipeline 7 and the second pipeline 3, or matching of the air pressures of the fourth pipeline 9 and the first pipeline 1.

[0103] like Figure 4 As shown, in some embodiments, the pressure regulating system 6 also includes an eighth switch valve 605, a ninth switch valve 606, a tenth switch valve 607 and an eleventh switch valve 608, the eighth switch valve 605 is arranged in the first output pipeline 601, the ninth switch valve 606 is arranged in the second output pipeline 602, the tenth switch valve 607 is arranged in the third output pipeline 603, and the eleventh switch valve 608 is arranged in the fourth output pipeline 604.

[0104] In the embodiment of the present application, a switch valve is provided on the output pipeline of each pressure regulating system 6 to control the on-off of each output pipeline. When the output pipeline needs to output nitrogen, the corresponding switch valve is opened, and after the air pressure is adjusted to the desired level, when the nitrogen does not need to be output, the corresponding switch valve is closed.

[0105] like Figure 5As shown, in some embodiments, the flare system also includes a control system 13, which is electrically connected to the eighth switch valve 605, the ninth switch valve 606, the tenth switch valve 607, the eleventh switch valve 608, the first pressure detection device 104, the second pressure detection device 304, the third pressure detection device 704 and the fourth pressure detection device 904, respectively.

[0106] In the embodiment of the present application, the control system 13 is respectively connected to the first pressure detection device 104, the second pressure detection device 304, the third pressure detection device 704 and the fourth pressure detection device 904, so as to detect the air pressure in the first pipeline 1, the second pipeline 3, the third pipeline 7 and the third pipeline 7. According to the obtained air pressure information, the control system 13 remotely controls the closing of the eighth switch valve 605, the ninth switch valve 606, the tenth switch valve 607 and the eleventh switch valve 608, so as to realize the intelligent delivery of nitrogen and the rapid adjustment of the air pressure in each pipeline.

[0107] In some embodiments, the inner diameters of the first transfer tube 5 , the second transfer tube 11 , and the third transfer tube 12 are all greater than 200 mm.

[0108] In the embodiment of the present application, in order to ensure that the flare gas in the connected pipelines can be quickly gathered when the flare is temporarily switched, it is preferred to set the pipe diameter of the transfer pipe to match the pipe diameter of the connected flare gas pipeline to ensure the rapid circulation of the flare gas. The flare gas pipeline connected at the rear end of the factory production device usually has a relatively large diameter, which will be greater than 200 mm. Therefore, the inner diameter (pipe diameter) of the corresponding transfer pipe is also greater than 200 mm, ensuring the rapid transmission of the flare gas between the pipelines, realizing the effective transmission and processing of the flare gas, and avoiding the accumulation of flare gas on one side, which leads to excessive pressure and affects subsequent production.

[0109] It should be noted that since the diameter of the pipeline involved in the flare gas transportation in the flare system is huge, the switch valve that controls the shutoff of the pipeline for flare gas transportation is also huge, and usually cannot be remotely controlled. A manually controlled switch valve is used for shutoff.

[0110] In the specific implementation of this application, the specific switching method is as follows:

[0111] For the first flare 2 that processes high-pressure toxic flare gas, if a failure occurs or maintenance is required, the high-pressure toxic flare gas in the first pipeline 1 needs to be temporarily discharged to the second pipeline 3 that transports low-pressure toxic flare gas to avoid contamination of the non-toxic flare gas (if there are only two flare gas pipelines, this problem is not considered). The specific operation is: open the eighth switch valve 605 on the first output pipeline 601, open the first switch valve 501 on the first transfer pipeline 5, and close the second switch valve 103 on the first pipeline 1, so that the high-pressure toxic flare gas in the first pipeline 1 passes through the first transfer pipeline 5 and the second pipeline 3 into the second flare 4 for temporary combustion treatment. The first output pipeline 601 outputs nitrogen to purge the first pipeline 1 for a period of time, and then closes the eighth switch valve 605 after the operation is stable. At the same time, during the switching and maintenance of the first flare 2 and the second flare 4, the pressure in the first pipeline 1 and the second pipeline 3 is monitored in real time by the first pressure detection device 104 and the second pressure detection device 304. If the pressure difference between the first pipeline 1 and the second pipeline 3 is greater than the first pressure difference value at which the first pipeline 1 can deliver gas to the second pipeline 3, the switch valve on the output pipeline corresponding to the pipeline with lower pressure is opened by the control system 13, and nitrogen is introduced for pressure regulation to ensure that the first pipeline 1 and the second pipeline 3 can operate stably and continuously after being connected. When it is detected that the pressure difference between the first pipeline 1 and the second pipeline 3 is less than the first pressure difference value, the corresponding switch valve is closed and the output of nitrogen is stopped. According to the above measures, the joint discharge of the high-pressure toxic flare gas in the first pipeline 1 and the low-pressure toxic flare gas in the second pipeline 3 is finally achieved.

[0112] For the second flare 4 that processes low-pressure toxic flare gas, if a failure occurs or maintenance is required, the low-pressure toxic flare gas needs to be temporarily discharged into the first pipeline 1 that transports high-pressure toxic flare gas to avoid contamination of the non-toxic flare gas (if there are only two flare gas pipelines, this problem is not considered). The specific operation is: open the ninth switch valve 606 on the second output pipeline 602, open the first switch valve 501 on the first transfer pipeline 5, and close the third switch valve 303 on the second pipeline 3, so that the high-pressure toxic flare gas in the second pipeline 3 passes through the first transfer pipeline 5 and the first pipeline 1 into the second flare 4 for temporary combustion treatment. The second output pipeline 602 outputs nitrogen to purge the second pipeline 3 for a period of time, and then closes the ninth switch valve 606 after the operation is stable. At the same time, during the switching and maintenance of the first flare 2 and the second flare 4, the pressure in the first pipeline 1 and the second pipeline 3 is monitored in real time by the first pressure detection device 104 and the second pressure detection device 304. If the pressure difference between the first pipeline 1 and the second pipeline 3 is greater than the second pressure difference value at which the second pipeline 3 can deliver gas to the first pipeline 1, the switch valve on the output pipeline corresponding to the pipeline with lower pressure is opened by the control system 13, and nitrogen is introduced for pressure regulation to ensure that the first pipeline 1 and the second pipeline 3 can operate stably and continuously after being connected. When it is detected that the pressure difference between the first pipeline 1 and the second pipeline 3 is less than the second pressure difference value, the corresponding switch valve is closed and the output of nitrogen is stopped. According to the above measures, the joint discharge of the low-pressure toxic flare gas in the second pipeline 3 and the high-pressure toxic flare gas in the first pipeline 1 is finally achieved.

[0113] For the third flare 8 that processes low-pressure non-toxic flare gas, if a failure occurs or maintenance is required, the low-pressure non-toxic flare gas needs to be temporarily discharged into the second pipeline 3 that transports low-pressure toxic flare gas. Since the second pipeline 3 and the third pipeline 7 process low-pressure flare gas, it is relatively easy to realize the joint discharge of the second pipeline 3 and the third pipeline 7, and the implementation cost will also be relatively low. The specific operation is: open the tenth switch valve 607 on the third output pipeline 603, open the fourth switch valve 111 on the second transfer pipeline 11, and close the sixth switch valve 703 on the third pipeline 7, so that the low-pressure non-toxic flare gas in the third pipeline 7 enters the second flare 4 through the second transfer pipeline 11 and the second pipeline 3 for temporary combustion treatment. The third output pipeline 603 outputs nitrogen to purge the third pipeline 7 for a period of time and closes the tenth switch valve 607 after the operation is stable. At the same time, during the switching and maintenance of the third flare 8 and the second flare 4, the pressure in the third pipeline 7 and the second pipeline 3 is monitored in real time by the third pressure detection device 704 and the second pressure detection device 304. If the pressure difference between the third pipeline 7 and the second pipeline 3 is greater than the third pressure difference value at which the third pipeline 7 can deliver the flare gas to the second pipeline 3, the switch valve on the output pipeline corresponding to the pipeline with lower pressure is opened by the control system 13, and nitrogen is introduced for pressure regulation to ensure that the third pipeline 7 and the second pipeline 3 can operate stably and continuously after being connected. When it is detected that the pressure difference between the third pipeline 7 and the second pipeline 3 is less than the third pressure difference value, the corresponding switch valve is closed and the output of nitrogen is stopped. According to the above measures, the joint discharge of the low-pressure non-toxic flare gas in the third pipeline 7 and the low-pressure non-toxic flare gas in the second pipeline 3 is finally achieved.

[0114] For the fourth flare 10 that processes high-pressure non-toxic flare gas, if a failure occurs or maintenance is required, the high-pressure non-toxic flare gas needs to be temporarily discharged into the first pipeline 1 that transports high-pressure toxic flare gas. Since the fourth pipeline 9 and the first pipeline 1 process both high-pressure flare gas, it is relatively easy to realize the joint discharge of the fourth pipeline 9 and the first pipeline 1, and the cost of realization will also be relatively low. The specific operation is: open the eleventh switch valve 608 on the fourth output pipeline 604, open the fifth switch valve 121 on the third transfer pipeline 12, and close the seventh switch valve 903 on the fourth pipeline 9, so that the high-pressure non-toxic flare gas in the fourth pipeline 9 enters the first flare 2 through the third transfer pipeline 12 and the first pipeline 1 for temporary combustion treatment. The fourth output pipeline 604 outputs nitrogen to purge the fourth pipeline 9 for a period of time, and then closes the eleventh switch valve 608 after the operation is stable. At the same time, during the switching and maintenance of the fourth flare 10 and the first flare 2, the pressure in the fourth pipeline 9 and the first pipeline 1 is monitored in real time by the fourth pressure detection device 904 and the first pressure detection device 104. If the pressure difference between the fourth pipeline 9 and the first pipeline 1 is greater than the fourth pressure difference value at which the fourth pipeline 9 can deliver the flare gas to the first pipeline 1, the switch valve on the output pipeline corresponding to the pipeline with lower pressure is opened by the control system 13, and nitrogen is introduced for pressure regulation to ensure that the fourth pipeline 9 and the first pipeline 1 can operate stably and continuously after being connected. When it is detected that the pressure difference between the fourth pipeline 9 and the first pipeline 1 is less than the fourth pressure difference value, the corresponding switch valve is closed and the output of nitrogen is stopped. According to the above measures, the joint discharge of the high-pressure non-toxic flare gas in the fourth pipeline 9 and the high-pressure toxic flare gas in the first pipeline 1 is finally achieved.

[0115] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0116] The above is a detailed introduction to a flare system provided in an embodiment of the present application, and the principles and implementation methods of the present application are explained by using specific examples. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A flare system, characterized in that: include: First pipeline; a first torch connected to the gas outlet end of the first pipeline; Second pipeline; a second torch connected to the gas outlet end of the second pipeline; A first transfer pipeline is connected to the first pipeline and the second pipeline respectively; The first transfer pipe is configured to connect the first pipe with the second torch when the first pipe is not connected to the first torch, and to connect the second pipe with the first torch when the second pipe is not connected to the second torch.

2. The flare system according to claim 1, characterized in that: Also included is a pressure regulating system, the pressure regulating system comprising: A first output pipeline is provided at a side of the first transfer pipeline away from the first flare and connected to the first pipeline, and is used to adjust the pressure in the first pipeline; The second output pipeline is arranged on a side of the first transfer pipeline away from the second torch and connected to the second pipeline for adjusting the pressure in the second pipeline.

3. The flare system according to claim 2, characterized in that: The first pipeline includes a first liquid separation tank and a first water seal tank, the output end of the first liquid separation tank is connected to the input end of the first water seal tank, and the output end of the first water seal tank is connected to the first torch; The second pipeline includes a second liquid separation tank and a second water seal tank, the output end of the second liquid separation tank is connected to the input end of the second water seal tank, and the output end of the second water seal tank is connected to the second torch; One end of the first transfer pipe is connected between the first liquid separation tank and the first water seal tank, and the other end of the first transfer pipe is connected between the second liquid separation tank and the second water seal tank; the first output pipeline is connected to the first liquid separation tank, and the second output pipeline is connected to the second liquid separation tank.

4. The flare system according to claim 3, characterized in that: The first transfer line is provided with a first switch valve, which is a two-way valve used to control the on-off of the first transfer line.

5. The flare system according to claim 4, characterized in that: The first pipeline further includes a second switch valve, and the second switch valve is arranged between the first transfer pipeline and the first water seal tank; The second pipeline further includes a third switch valve, and the third switch valve is arranged between the first transfer pipeline and the second water seal tank.

6. The flare system according to claim 5, characterized in that: The first pipeline further includes a first pressure detection device, and the first pressure detection device is arranged between the first liquid separation tank and the first transfer pipeline; The second pipeline further includes a second pressure detection device, and the second pressure detection device is arranged between the second liquid separation tank and the first transfer pipeline.

7. The flare system according to claim 6, characterized in that: The flare system also includes: The third pipeline; a third torch connected to the gas outlet end of the third pipeline; Fourth pipeline; a fourth torch connected to the gas outlet end of the fourth pipeline; A second transfer pipe is connected to the second pipeline and the third pipeline respectively; the second transfer pipe is configured to connect the third pipeline with the second flare when the third pipeline is not connected with the third flare; The third transfer pipe is connected to the fourth pipe and the first pipe respectively; the third transfer pipe is configured to connect the fourth pipe with the first torch when the fourth pipe is not connected with the fourth torch.

8. The flare system according to claim 7, characterized in that: The pressure regulating system further comprises: A third output pipeline is arranged on a side of the second transfer pipeline away from the third torch and connected to the third pipeline, and is used to adjust the pressure in the third pipeline; The fourth output pipeline is arranged on a side of the third pipeline away from the fourth torch and connected to the fourth pipeline, and is used for adjusting the pressure in the fourth pipeline.

9. The flare system according to claim 8, characterized in that: The third pipeline includes a third liquid separation tank and a third water seal tank, the output end of the third liquid separation tank is connected to the input end of the third water seal tank, and the output end of the third water seal tank is connected to the third torch; The fourth pipeline includes a fourth liquid separation tank and a fourth water seal tank, the output end of the fourth liquid separation tank is connected to the input end of the fourth water seal tank, and the output end of the fourth water seal tank is connected to the fourth torch; One end of the second transfer pipe is connected between the third liquid separation tank and the third water seal tank, and the other end of the second transfer pipe is connected between the second liquid separation tank and the third switch valve; One end of the third transfer pipe is connected between the fourth liquid separation tank and the fourth water seal tank, and the other end of the third transfer pipe is connected between the first liquid separation tank and the second switch valve; The third output pipeline is connected to the third liquid separation tank, and the fourth output pipeline is connected to the fourth liquid separation tank.

10. The flare system according to claim 9, characterized in that: The second transfer pipeline is provided with a fourth switch valve, and the fourth switch valve is a one-way valve that conducts along the third pipeline toward the second pipeline; The third transfer pipeline is provided with a fifth switch valve, and the fifth switch valve is a one-way valve that conducts along the fourth pipeline toward the first pipeline.

11. The flare system according to claim 9, characterized in that: The third pipeline further includes a sixth switch valve and a third pressure detection device, the sixth switch valve is arranged between the second transfer pipeline and the third water seal tank, and the third pressure detection device is arranged between the third liquid separation tank and the second transfer pipeline; The fourth pipeline also includes a seventh switch valve and a fourth pressure detection device. The seventh switch valve is arranged between the third transfer pipeline and the fourth water seal tank. The fourth pressure detection device is arranged between the fourth liquid separation tank and the third transfer pipeline.

12. The flare system according to claim 11, characterized in that: The pressure regulating system further comprises: an eighth switch valve, arranged in the first output pipeline; a ninth switch valve, arranged in the second output pipeline; a tenth switch valve, arranged in the third output pipeline; The eleventh switch valve is arranged in the fourth output pipeline.

13. The flare system according to claim 12, characterized in that: The flare system also includes a control system, which is electrically connected to the eighth switch valve, the ninth switch valve, the tenth switch valve, the eleventh switch valve, the first pressure detection device, the second pressure detection device, the third pressure detection device and the fourth pressure detection device, respectively.

14. The flare system according to claim 7, characterized in that: The first pipeline is a high-pressure toxic flare gas pipeline, the second pipeline is a low-pressure toxic flare gas pipeline, the third pipeline is a low-pressure non-toxic flare gas pipeline, and the fourth pipeline is a high-pressure non-toxic flare gas pipeline. The first flare and the second flare are both elevated flares, and the third flare and the fourth flare are both ground flares.

15. The flare system according to claim 7, characterized in that: The inner diameters of the first transfer tube, the second transfer tube and the third transfer tube are all greater than 200 mm.

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