Flare system for treating wet acid flare gas

Abstract

The utility model relates to the technical field of flare systems, and provides a flare system for treating wet acid flare gas, which comprises a flare body, the flare body consists of a flare barrel and a flare head at the top of the flare barrel, and an incandescent light is arranged at the top of the flare head. The torch further comprises a conical guide cylinder, a gas guide assembly, a gas flow detector and an involute flow adjusting assembly, the conical guide cylinder is coaxially arranged in the torch head, the gas guide assembly is installed in the conical guide cylinder, the gas flow detector is fixedly installed in the torch cylinder, and the involute flow adjusting assembly is installed in the torch head. By means of the technical scheme, the problems that in the prior art, when flare gas is discharged in a low-flow mode or intermittently, the flare gas is difficult to fully burn, unburnt gas is gathered, and highly toxic gas leaks are solved.

Description

Technical Field

[0001] This utility model relates to the field of flare system technology, specifically to a flare system for treating wet acidic flare gas. Background Technology

[0002] Flare systems are critical facilities in industrial sectors such as petrochemicals, oil refining, and natural gas processing, used for the safe treatment of flammable waste gases or emergency gas emissions. They convert hazardous gases into relatively harmless substances such as carbon dioxide and water through combustion, preventing the direct release of toxic, flammable, or explosive gases into the atmosphere, thus ensuring production safety and environmental protection. Wet acidic flare gas is a type of flammable waste gas in the industrial sector containing liquid water (or water vapor), hydrogen sulfide, and acidic components such as carbon dioxide. When this type of gas is burned in a flare system, its special physicochemical properties place higher demands on equipment, the environment, and safety.

[0003] When handling wet acidic flare gas, it is difficult to achieve complete combustion when the wet acidic gas is emitted at low flow rates or intermittently. Unburned flare gas can easily accumulate in pipelines or inside the flare tube until it reaches the explosion limit. When it encounters an ignition source, it will cause an explosion, which is highly dangerous. Furthermore, when the flare gas emission flow rate is low, some of the flare gas will be emitted without complete combustion, leading to the leakage of highly toxic gases and thus affecting environmental safety. Utility Model Content

[0004] This invention proposes a flare system for treating wet acidic flare gas, which solves the problem in the prior art that it is difficult to fully combust the flare gas when the flare gas is discharged at low flow or intermittently, resulting in the accumulation of unburned gas and leakage of highly toxic gas.

[0005] The technical solution of this utility model is as follows:

[0006] A flare system for treating wet acidic flare gas includes a flare body, the flare body comprising a flare cylinder and a flare head at the top of the flare cylinder, the flare head being equipped with a continuous lamp at the top, and further comprising:

[0007] A conical guide tube, which is coaxially disposed inside the torch head;

[0008] A gas guiding component is installed inside the conical guide tube to guide and gather the discharged flare gas.

[0009] A gas flow detector, which is fixedly installed inside the flare tube;

[0010] An involute flow rate regulating component is installed inside the flare head. The involute flow rate regulating component is normally open and is used to adjust the output flow rate of the flare gas when the discharged flare gas is unstable.

[0011] Based on the aforementioned solution, the air guiding assembly includes:

[0012] Spiral guide plates: Several spiral guide plates are fixedly installed at equal angles in a circular shape inside the conical guide cylinder;

[0013] The guide groove is provided at the bottom of each of the spiral guide plates.

[0014] Based on the aforementioned scheme, the involute flow rate regulating component includes:

[0015] The torch head has several assembly plates fixedly installed in a circular shape at equal angles inside, and each assembly plate is fixedly connected to the conical guide tube.

[0016] The slide groove is provided on both sides of each of the assembly plates;

[0017] An involute guide section is provided between every two assembly plates to control the flow rate of flare gas passing between each two assembly plates.

[0018] Based on the aforementioned scheme, the involute guide section includes:

[0019] An arc-shaped guide block is provided between every two assembly plates. Each arc-shaped guide block is slidably connected to the sliding groove on the side of the two assembly plates on both sides. The arc-shaped guide block is slidably engaged with the inner wall of the torch head.

[0020] A driving component is installed on the torch head to drive the arc-shaped guide block to move.

[0021] Based on the aforementioned scheme, in order to maintain the uniformity of flare gas discharge when the flare gas is unstable, the bottom of the arc-shaped guide block is set to be inclined with the side near the flare head lower than the side near the conical guide cylinder, and also includes arc-shaped rectification grooves. Each arc-shaped guide block has several arc-shaped rectification grooves at its bottom, and the several arc-shaped rectification grooves are distributed in an arc shape.

[0022] Based on the aforementioned solution, the driving component includes:

[0023] The torch head is fixedly installed with several sets of guide rails in a circumferential shape at equal angles. Several arc-shaped guide blocks correspond one-to-one with several sets of arc-shaped guide blocks. Each set of guide rails has two guide rails.

[0024] The pusher is slidably mounted on each set of guide rails. The pusher is slidably connected to the guide rails on both sides. The fixed side of the pusher is located inside the torch head, and the driving side of the pusher is located outside the torch head. The bottom of the fixed side of the pusher is fixedly connected to the arc-shaped guide block.

[0025] Based on the aforementioned scheme, in order to drive the pusher frame to move, a driving component is also included. The driving component can be a drive element such as an electric push rod or an electric cylinder. Several driving components are fixedly installed at equal angles in a circular shape on the outside of the torch head. Each of the driving components corresponds to one of the pushers. The output end of the driving component is fixedly connected to the fixed side of the pusher frame and is used to push the pusher frame to move along the axial direction of the torch head.

[0026] Based on the aforementioned scheme, a windproof frame is also included. The windproof frame is fixedly installed on the top of the torch head, and the continuous lamp is fixedly installed on the windproof frame. The windproof frame has several through holes in a circular shape for diverting airflow. The bottom of the windproof frame has several receiving slots in a circular shape at equal angles. The several receiving slots correspond one-to-one with the several pushing frames, and the pushing frames slide in cooperation with the receiving slots.

[0027] The working principle and beneficial effects of this utility model are as follows:

[0028] 1. In this utility model, the corresponding driving component is activated to drive the push frame to move along the guide slide rail, thereby changing the position of the arc-shaped guide block and realizing precise adjustment of the airflow. Depending on the specific situation, only one or several arc-shaped guide blocks can be adjusted. When adjusting the position of the arc-shaped guide block, two or even numbers of arc-shaped guide blocks that are symmetrically arranged are usually adjusted at the same time to maintain the balance of airflow on both sides and avoid airflow deviation caused by unilateral adjustment, so as to affect the stable operation of the flare system.

[0029] 2. In this utility model, the gas is forced to mix by the swirling effect of the spiral guide plate to form a uniform flow. The guide groove further disperses the airflow and reduces turbulence, thereby optimizing the gas distribution path and ensuring that a stable flame can be maintained even at low flow rates. This makes the flare gas more concentrated and reduces the possibility of incomplete combustion of the flare gas. Attached Figure Description

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0033] Figure 3 This is a three-dimensional structural schematic diagram of the present invention, viewed from another angle.

[0034] Figure 4 This is a cross-sectional structural diagram showing the cooperation of the air guide assembly, the involute flow regulating assembly, and the drive component in this utility model.

[0035] Figure 5 This is a cross-sectional view of the gas guide assembly and the involute flow regulating assembly used in this utility model.

[0036] Figure 6 This is a cross-sectional view of the air guiding component and the involute flow regulating component from another angle in this utility model.

[0037] Figure 7 This is a cross-sectional view of the involute flow regulating component in this utility model.

[0038] In the diagram: 1. Flare tube; 2. Flare head; 3. Incandescent lamp; 4. Conical guide tube; 5. Gas flow detector; 6. Spiral guide plate; 7. Guide groove; 8. Assembly plate; 9. Slide groove; 10. Arc-shaped guide block; 11. Arc-shaped rectifier groove; 12. Guide rail; 13. Push frame; 14. Drive component; 15. Windproof frame; 16. Through hole; 17. Receiving groove; 18. Gas pipe. Detailed Implementation

[0039] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0040] like Figures 1 to 7 As shown, this embodiment proposes a flare system for treating wet acidic flare gas, including a flare body, which consists of a flare cylinder 1 and a flare head 2 at the top of the flare cylinder 1. A continuous light 3 is provided at the top of the flare head 2. The system also includes a conical guide tube 4, a gas guiding assembly, a gas flow detector 5, and an involute flow regulating assembly. The conical guide tube 4 is coaxially disposed inside the flare head 2. The gas guiding assembly is installed inside the conical guide tube 4 to guide and gather the discharged flare gas. The gas guiding assembly includes a spiral guide plate 6 and a guide groove 7. Several spiral guide plates 6 are fixedly installed at equal angles in a circular shape inside the conical guide tube 4. Each spiral guide plate 6 has a guide groove 7 at its bottom.

[0041] Specifically, the wet acidic flare gas is delivered to the flare tube 1 through an external pipeline. After entering the flare tube 1, it is discharged from bottom to top until it reaches the flare head 2. At this point, the ignition device inside the continuous flame lamp 3 is activated, and fuel is continuously supplied to the continuous flame lamp 3 through the gas pipe 18 and ignited by the ignition device to burn the flare gas. During the flare gas discharge process, when the flare gas reaches the bottom of the conical guide tube 4, the gradually opening flow regulating component is in the normally open position. This means that the flare gas will pass through both the conical guide tube 4 and the gradually opening flow regulating component at this time. Simultaneously, the flow rate of the flare gas is detected by the gas flow detector 5. When the flow rate is sufficient, the gradually opening flow regulating component does not operate. When the flow rate is unstable, the gradually opening flow regulating component is opened, and the opening of the gradually opening flow regulating component is slowly closed, allowing more flare gas to be discharged through the conical guide tube 4. Alternatively, the gradually opening flow regulating component is closed, and all the flare gas is discharged through the conical guide tube 4. With the setting of the guide groove 7, the flare gas forms a stable combustion flame at the top of the guide tube during the process of being discharged through the spiral guide plate 6, thereby effectively treating the wet acidic flare gas and effectively reducing environmental pollution.

[0042] It should be added that under low flow conditions, the flare gas emission is insufficient, and combustible gases can easily accumulate in the system. In this case, nitrogen can be emitted into the flare cylinder 1. As an inert gas, nitrogen dilutes the concentration of combustible gases, bringing it below the lower explosive limit. When nitrogen is mixed with flare gas, it reduces gas density and increases flow stiffness, forming an inert barrier in the pipeline to block the backfire path of the flame, thereby reducing the risk of droplet deposition and slug flow.

[0043] like Figures 1 to 5 As shown, the gas flow detector 5 is fixedly installed inside the flare tube 1, and the involute flow regulating component is installed inside the flare head 2. The involute flow regulating component is normally open and is used to adjust the output flow rate of the flare gas when the discharged flare gas is unstable. The involute flow regulating component includes an assembly plate 8, a slide groove 9, and an involute guide section. Several assembly plates 8 are fixedly installed in a circumferential shape at equal angles inside the flare head 2. Each assembly plate 8 is fixedly connected to the conical guide tube 4. The slide groove 9 is provided on both sides of each assembly plate 8. The involute guide section is provided between every two assembly plates 8 to control the flow rate of the flare gas passing between every two assembly plates 8.

[0044] Specifically, during the operation of the flare system, the operator closely monitors the data displayed by the gas flow detector 5. When it is necessary to control the flow rate of the flare gas, the operator activates the drive component to push the involute guide section along the slide groove 9, thereby adjusting the distance between the involute guide section and the conical guide tube 4, thus adjusting the flow rate of the flare gas emission. This makes the emission of the flare gas more stable and effectively prevents uneven emission caused by flow fluctuations, so as to accurately control the degree of contraction of the involute flow regulating component and ensure that the emission of the flare gas is both stable and environmentally friendly.

[0045] The above, such as Figure 7 As shown, the involute guide section includes an arc-shaped guide block 10 and a driving component. An arc-shaped guide block 10 is provided between every two assembly plates 8. Each arc-shaped guide block 10 is slidably connected to the sliding grooves 9 on the sides of the two assembly plates 8 on both sides. The arc-shaped guide block 10 is slidably engaged with the inner wall of the torch head 2. The driving component is installed on the torch head 2 to drive the arc-shaped guide block 10 to move. The bottom of the arc-shaped guide block 10 is set to be inclined with the side near the torch head 2 lower than the side near the conical guide cylinder 4. It also includes an arc-shaped rectifier groove 11. Several arc-shaped rectifier grooves 11 are opened at the bottom of each arc-shaped guide block 10. The several arc-shaped rectifier grooves 11 are distributed in an arc shape.

[0046] Specifically, when the flare gas flow rate is sufficient, the distance between the arc-shaped guide block 10 and the conical guide cylinder 4 is at its maximum. When the flare gas is discharged through the bottom of the arc-shaped guide block 10, the arc-shaped rectifier groove 11 makes the gas flow smoother and reduces turbulence. Furthermore, the guiding effect of the arc-shaped rectifier groove 11 can effectively disperse the airflow, reduce local pressure, and ensure uniform distribution of the flare gas. When adjusting the flare gas flow rate, the drive component is activated, causing the arc-shaped guide block 10 to move along the slide groove 9, thereby changing the size of the gap between the arc-shaped guide block 10 and the conical guide cylinder 4, and thus precisely controlling the emission flow rate of the flare gas. When the arc-shaped guide block 10 moves to the lowest position, the arc-shaped guide block 10 abuts against the outer side of the conical guide cylinder 4. At this time, the flare gas can only be discharged through the conical guide cylinder 4. At this time, the flare gas flow rate reaches its minimum, the emission is more concentrated, ensuring the safe and stable operation of the system and improving the operational flexibility of the flare system.

[0047] The above, such as Figures 5 to 7As shown, the driving component includes guide rails 12 and pushers 13. Several sets of guide rails 12 are fixedly installed at equal angles in a circular shape on the torch head 2. Several arc-shaped guide blocks 10 correspond one-to-one with several sets of arc-shaped guide blocks 10. Each set of guide rails 12 has two members, and each set of guide rails 12 has a pusher 13 slidably installed on it. The pusher 13 is slidably connected to the guide rails 12 on both sides, and the fixed side of the pusher 13 is located on the torch head. Inside 2, the driving side of the pusher 13 is located outside the torch head 2. The bottom of the fixed side of the pusher 13 is fixedly connected to the arc-shaped guide block 10. It also includes a drive component 14. Several drive components 14 are fixedly installed at equal angles in a circumferential shape on the outside of the torch head 2. Each drive component 14 corresponds to one of the pushers 13. The output end of the drive component 14 is fixedly connected to the fixed side of the pusher 13 and is used to push the pusher 13 to move along the axial direction of the torch head 2.

[0048] Specifically, when adjusting the position of the arc-shaped guide block 10, the corresponding drive component 14 is activated. The drive component 14 drives the push frame 13 to move along the guide rail 12, thereby changing the position of the arc-shaped guide block 10 and achieving precise adjustment of the airflow. In actual operation, depending on the specific situation, only one or several arc-shaped guide blocks 10 can be adjusted. When adjusting the position of the arc-shaped guide block 10, two symmetrically arranged arc-shaped guide blocks 10 are generally adjusted simultaneously to maintain the balance of airflow on both sides and avoid airflow deviation caused by unilateral adjustment, which would affect the stable operation of the flare system, meet the needs under different working conditions, ensure that the flare system can operate efficiently and stably under various flow conditions, and improve the overall safety and flexibility of operation.

[0049] It also includes, such as Figures 1 to 3 As shown, it also includes a windproof frame 15, which is fixedly installed on the top of the torch head 2. The continuous lamp 3 is fixedly installed on the windproof frame 15. The windproof frame 15 has several through holes 16 in a circular shape for diverting airflow. The bottom of the windproof frame 15 has several receiving grooves 17 in a circular shape at equal angles. The several receiving grooves 17 correspond one-to-one with the several pushing frames 13. The pushing frames 13 slide in cooperation with the receiving grooves 17.

[0050] Specifically, when the arc-shaped guide block 10 moves, the pusher 13 slides inside the receiving groove 17 to ensure the stability of the arc-shaped guide block 10 during movement. In severe weather, the windproof frame 15 effectively blocks the wind, ensuring that the adjustment of the guide block is not disturbed. Through the setting of the through hole 16, the strong wind is decomposed into multiple small airflows, reducing the impact of local wind speed on the flame, guiding the airflow direction and the direction of air-gas mixing, forming a stable combustion vortex. At the same time, the through hole 16, as an air inlet, can supplement the oxygen required for combustion to a certain extent, promote the complete combustion of flare gas, and the low-pressure zone formed at the edge of the through hole 16 helps the flame to be "anchored" in the windproof cover, reducing drift. It can also disperse heat, avoid local overheating, improve the overall combustion efficiency, and further ensure the safety and reliability of the flare system.

[0051] The working principle or usage process of this application is as follows:

[0052] Wet acidic flare gas is transported into the flare tube 1 through an external pipeline. After entering the flare tube 1, it is discharged from bottom to top until it reaches the position of the flare head 2. Then, the ignition device inside the continuous flame lamp 3 is turned on, and fuel is continuously supplied to the continuous flame lamp 3 through the gas pipe 18 and ignited by the ignition device to burn the flare gas. During the flare gas discharge process, when the flare gas reaches the bottom of the conical guide tube 4, under the premise of sufficient flare gas flow, the arc-shaped guide block 10 is in the normal position. At this time, the distance between the arc-shaped guide block 10 and the conical guide tube 4 is the largest. When the flare gas is discharged through the bottom of the arc-shaped guide block 10, the arc-shaped straightening groove 11 can make the gas flow smoother, reduce turbulence, and the guiding effect of the arc-shaped straightening groove 11 can effectively disperse the airflow, reduce local pressure, and ensure uniform distribution of flare gas.

[0053] During the operation of the flare system, the flow rate of the flare gas is detected by the gas flow detector 5. When the flow rate is unstable, the corresponding drive component 14 is activated. The drive component 14 drives the push frame 13 to move along the guide rail 12, thereby changing the position of the arc-shaped guide block 10 and adjusting the gap between the arc-shaped guide block 10 and the conical guide tube 4, thus precisely controlling the emission flow rate of the flare gas. In actual operation, depending on the specific situation, only one or several arc-shaped guide blocks 10 can be adjusted. When adjusting the position of the arc-shaped guide block 10, two symmetrically arranged arc-shaped guide blocks 10 are usually adjusted at the same time to maintain the balance of airflow on both sides and avoid airflow deviation caused by unilateral adjustment, which would affect the stable operation of the flare system and meet the needs under different working conditions.

[0054] When the arc-shaped guide block 10 moves to its lowest position, it abuts against the outer side of the conical guide cylinder 4. At this point, the flare gas flow rate reaches its minimum, and the flare gas can only be discharged through the conical guide cylinder 4, resulting in more concentrated discharge. With the setting of the guide groove 7, the flare gas forms a stable combustion flame at the top of the guide cylinder during the discharge process through the spiral guide plate 6, thereby effectively treating the wet acidic flare gas, ensuring the safe and stable operation of the system, and improving the operational flexibility of the flare system.

[0055] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A flare system for treating wet sour flare gas comprising a flare body consisting of a flare cylinder (1) and a flare head (2) at the top of the flare cylinder (1), a flare head (2) being provided at the top with a permanent light (3), characterized in that, Also include: The conical flow guide (4) is coaxially arranged in the torch head (2); Gas guide assembly, the conical flow guide (4) is internally mounted with the gas guide assembly, for guiding out and gathering the discharged torch gas; Gas flow detector (5), the gas flow detector (5) is fixedly installed in the torch cylinder (1) inside; Involute flow regulating assembly, the involute flow regulating assembly is installed in the torch head (2), the involute flow regulating assembly is normally open, for adjusting the output flow when the torch gas discharge is unstable.

2. A flare system for treating wet sour flare gas as claimed in claim 1, wherein The gas guide assembly comprises: Spiral flow guide plate (6), a plurality of spiral flow guide plates (6) are fixedly installed in the conical flow guide (4) inside in a circular shape at equal angles; Flow guide groove (7), each spiral flow guide plate (6) is provided with the flow guide groove (7) at the bottom.

3. A flare system for treating wet sour flare gas as claimed in claim 2, wherein The involute flow regulating assembly comprises: Assembly plate (8), a plurality of assembly plates (8) are fixedly installed in the torch head (2) in a circular shape at equal angles, each assembly plate (8) is fixedly connected with the conical flow guide (4); Slide groove (9), the slide groove (9) is formed on both sides of each assembly plate (8); Involute flow guide part, the involute flow guide part is arranged between every two assembly plates (8), for controlling the flow of torch gas passing between every two assembly plates (8).

4. A flare system for treating wet sour flare gas as claimed in claim 3, wherein The involute flow guide part comprises: Arc-shaped flow guide block (10), the arc-shaped flow guide block (10) is arranged between every two assembly plates (8), each arc-shaped flow guide block (10) is slidably connected with the slide groove (9) of the side part of two assembly plates (8) on both sides, and the arc-shaped flow guide block (10) is slidably connected with the inner wall of the torch head (2); Driving member, the driving member is installed on the torch head (2), for driving the arc-shaped flow guide block (10) to move.

5. A flare system for treating wet sour flare gas as claimed in claim 4, wherein The bottom of the arc-shaped flow guide block (10) is arranged in an inclined shape, wherein the side close to the torch head (2) is lower than the side close to the conical flow guide (4), and the arc-shaped flow guide block (10) is further provided with an arc-shaped rectification groove (11), a plurality of arc-shaped rectification grooves (11) are formed at the bottom of each arc-shaped flow guide block (10), and the plurality of arc-shaped rectification grooves (11) are distributed in a circular arc shape.

6. A flare system for treating wet sour flare gas as claimed in claim 5, wherein The driving member comprises: Guide slide rail (12), a plurality of guide slide rails (12) are fixedly installed on the torch head (2) in a circular shape at equal angles, a plurality of arc-shaped flow guide blocks (10) are correspondingly arranged with a plurality of groups of guide slide rails (12) one by one, and each group of guide slide rails (12) is provided with two guide slide rails (12); Push frame (13), the push frame (13) is slidably installed on each group of guide slide rails (12), the push frame (13) is slidably connected with the guide slide rails (12) on both sides, the fixed side of the push frame (13) is located in the interior of the torch head (2), the driving side of the push frame (13) is located outside the torch head (2), and the fixed side of the push frame (13) is fixedly connected with the arc-shaped flow guide block (10).

7. A flare system for treating wet sour flare gas as claimed in claim 6, wherein It also includes driving piece (14), torch head (2) outside is fixedly installed in several driving piece (14) in circle, several driving piece (14) respectively with several pusher (13) one to one, the output of driving piece (14) is fixedly connected with the fixed side of pusher (13), for pushing pusher (13) moves along torch head (2) axis direction.

8. A flare system for treating wet sour flare gas as claimed in claim 7, wherein It also includes windbreak (15), the windbreak (15) is fixedly installed on torch head (2) top, the long-lasting light (3) is fixedly installed on the windbreak (15), the windbreak (15) is opened in several through holes (16) in circle, for air flow is divided, the bottom of windbreak (15) is opened in several accommodating grooves (17) in circle, several accommodating grooves (17) with several pusher (13) one to one, pusher (13) is slidably connected with accommodating groove (17).

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