Ground flare burner
By installing air and steam ring pipes in the ground flare burner, efficient mixing and combustion of flare gas and air are achieved, solving the problem of insufficient flare gas mixing, reducing equipment size and energy consumption, and improving combustion efficiency and smoke suppression effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing ground flare burners suffer from problems such as insufficient mixing of flare gas and air, incomplete combustion, large equipment size, high energy consumption, and high production costs.
A compact burner was designed, which achieves efficient mixing and smoke elimination by concentrically arranging air and steam ring pipes on the outside of the flare pipe, mixing air and flare gas in the air pipe, and staggering the flare gas outlet and the mixed gas outlet, combined with the inclined arrangement of the steam outlet of the steam ring pipe.
It achieves complete combustion of flare gas, reduces equipment size and energy consumption, improves combustion efficiency and smoke suppression performance, and enhances system reliability and environmental performance.
Smart Images
Figure CN224516802U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fuel gas treatment technology, specifically to a ground flare burner. Background Technology
[0002] The flare gas purification and treatment system is the last line of defense for safety and environmental protection in plants of industries such as petroleum, chemical, plastics, and metallurgy. In the event of equipment malfunctions, maintenance, start-up or shutdown, or major accidents such as power outages, water outages, or fires, this system ensures the timely purification and discharge of industrial waste gas, guaranteeing the safety of plant equipment and personnel. It is the last line of defense for plant safety and a crucial measure to ensure safe production and reduce environmental pollution. The burner is the core equipment of the ground flare system, and its design directly affects the safe and environmentally friendly operation of the ground flare.
[0003] In the prior art, patent document CN211146517U discloses a ground flare burner, which mainly consists of a flare gas main pipe, L-shaped branch pipes, and flare gas injection pipes. The top of the flare gas main pipe is closed, and a flange is installed at the bottom. Multiple L-shaped branch pipes are arranged at different heights on the flare gas main pipe. Flare gas injection pipes are fixed at the top of the L-shaped branch pipes. The two ends of the L-shaped branch pipes are respectively connected to the flare gas main pipe and the flare gas injection pipes. The flare gas injection pipes are arranged radially relative to the center of the flare gas main pipe. The two ends of the flare gas injection pipes are respectively provided with multiple flare gas injection holes. An air replenishment pipe is provided between each of the flare gas injection pipes. The air replenishment pipes are located below the flare gas injection pipes and are also provided with multiple air outlet holes. When the burner is working, flare gas is ejected from the flare gas injection port, and air is ejected from multiple air outlets on the air supply pipe. Due to the misalignment of the flare gas injection port and the air outlets, the flare gas and air cannot be effectively mixed, resulting in incomplete combustion of the flare gas.
[0004] Patent document CN208886804U discloses an internal combustion exhaust gas ground flare burner. To ensure complete combustion of the exhaust gas, this burner features two blowers and an air deflector. However, its overall structure is large and occupies a significant amount of space. The two blowers rely on separate blowers, resulting in high energy consumption. Adding an air deflector within the burner can improve the production cost of this equipment. Utility Model Content
[0005] The main purpose of this utility model is to provide a ground flare burner with a compact structure, complete combustion of flare gas, and good smoke suppression effect.
[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:
[0007] A ground flare burner, fixed in a flare tube, includes a flare gas pipe with its upper end sealed. The flare gas pipe is characterized by having an air ring pipe concentrically arranged on the outer side of its upper end. The flare gas pipe and the air ring pipe are fixedly connected by multiple air pipes, which are in communication with each other. Multiple mixed gas outlet holes are opened at the upper end of the air pipe. An inner pipe is concentrically arranged inside the air pipe, with one end sealed and the other end connected to the flare gas pipe. Multiple flare gas outlet holes are opened on the wall of the inner pipe. An air inlet pipe is fixedly connected to the lower end of the air ring pipe. A steam ring pipe is fixedly sleeved on the outer side of the flare gas pipe below the multiple air pipes. Multiple steam pipes are evenly distributed and fixedly connected to the outer circumference of the steam ring pipe. The steam pipes are staggered with the air pipes, and multiple steam outlet holes are opened at the upper end of the steam pipes. A steam inlet pipe is fixedly connected to the lower end of the steam ring pipe.
[0008] Specifically, the multiple air pipes are evenly distributed around the circumference of the flare pipe axis.
[0009] Specifically, the air ring pipe is fixedly connected to the inner wall of the flare tube.
[0010] Specifically, the multiple steam outlets at the upper end of the steam pipe are arranged in two rows, with the two rows of steam outlets inclined toward the two air pipes respectively.
[0011] Specifically, the flare gas outlet and the mixed gas outlet are offset.
[0012] Specifically, a continuous light is installed inside the flare tube above the air ring pipe.
[0013] Specifically, a flame stabilizing ring is fixed at the upper end of the torch tube, and the flame stabilizing ring has a plate-like spiral structure.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. The design of direct mixing of air and flare gas in the air pipe (flare gas is discharged through the flare gas outlet of the inner pipe, and air enters the air pipe through the air ring pipe) achieves a high degree of integration, avoids the need for external mixing devices, significantly reduces the overall volume of the burner, and facilitates installation and maintenance.
[0016] 2. The staggered arrangement of the flare gas outlet and the mixed gas outlet forces the airflow to interact at multiple angles within the air pipe, ensuring uniform mixing of air and flare gas. Combined with the flame stabilizing effect of the flame stabilizer ring, this promotes complete combustion of the flare gas, reduces unburned residue, and improves combustion efficiency.
[0017] 3. The flame stabilizing ring at the upper end of the flare tube guides the airflow to form vortices, effectively buffering flame fluctuations and maintaining flame stability during ignition and operation. This reduces the risk of flameout and enhances system reliability, especially under varying operating conditions.
[0018] 4. The design of the steam ring pipe and steam pipe features two rows of inclined steam outlets that spray out towards the air pipe, allowing the steam to actively mix with the mixed gas. This directional injection not only enhances the contact area between the steam and the mixed gas but also improves smoke suppression performance, effectively reducing smoke generation and improving environmental performance. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the present invention.
[0020] Figure 2 This is a top view of the present invention installed inside the torch tube.
[0021] Figure 3 This is a schematic diagram of the inner tube in an air duct.
[0022] Figure 4 for Figure 3 A magnified view of region A in the middle.
[0023] The components in the attached diagram are named as follows: 1. Flare pipe, 2. Air ring pipe, 3. Steam ring pipe, 4. Air pipe, 5. Steam pipe, 6. Air inlet pipe, 7. Steam inlet pipe, 8. Mixed gas outlet, 9. Steam outlet, 10. Inner pipe, 11. Flare gas outlet, 12. Flare tube. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0025] Example 1: Refer to Figures 1-4 As shown, the ground flare burner is fixed inside the flare tube 12. A flame stabilizing ring is fixed to the upper end of the flare tube 12, and the flame stabilizing ring has a plate-like spiral structure.
[0026] The system includes a flare pipe 1, with its upper end sealed. An air ring pipe 2 is concentrically arranged on the outer side of the upper end of the flare pipe 1, and the air ring pipe 2 is fixedly connected to the inner wall of the flare tube 12. The flare pipe 1 and the air ring pipe 2 are fixedly connected by multiple air pipes 4, which are evenly distributed around the circumference of the flare pipe 1. The air pipes 4 communicate with the air ring pipe 2, and multiple mixed gas outlet holes 8 are opened at the upper end of the air pipes 4. An inner pipe 10 is concentrically arranged inside the air pipes 4, with one end sealed and the other end communicating with the flare pipe 1. Multiple flare gas outlet holes 11 are opened on the wall of the inner pipe 10, and the flare gas outlet holes 11 are staggered with the mixed gas outlet holes 8.
[0027] The lower end of the air ring pipe 2 is fixedly connected to the air inlet pipe 6.
[0028] A continuous light is installed inside the flare tube 12 above the air ring tube 2.
[0029] During operation, flare gas enters flare pipe 1, and after entering inner pipe 10, it is discharged into air pipe 4 through multiple flare gas outlets 11. Air enters air ring pipe 2 through air inlet pipe 6, and the air in air ring pipe 2 enters air pipe 4 and mixes with flare gas. After mixing, the mixture is discharged into flare tube 12 through mixture outlet 8. The mixture is ignited in flare tube 12, and the flame stabilizing ring stabilizes the flame.
[0030] Air and flare gas are mixed in air pipe 4. The compact structure reduces the overall volume of the burner. The air and flare gas can be mixed evenly, which allows the flare gas to burn completely.
[0031] Example 2: Based on Example 1, referring to... Figures 1-3 As shown, a steam ring pipe 3 is fixedly sleeved on the outside of the flare pipe 1 below multiple air pipes 4. Multiple steam pipes 5 are evenly distributed and fixedly connected to the outside of the steam ring pipe 3. The steam pipes 5 are staggered with the air pipes 4. Multiple steam outlet holes 9 are opened at the upper end of the steam pipes 5. A steam inlet pipe 7 is fixedly connected to the lower end of the steam ring pipe 3.
[0032] Multiple steam outlets 9 at the upper end of the steam pipe 5 are arranged in two rows, and the two rows of steam outlets 9 are inclined toward the two air pipes 4 respectively.
[0033] Steam is ejected at an angle from steam outlet 9 and mixes with the mixed gas discharged from mixed gas outlet 8, which enhances the smoke elimination effect of steam.
[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A ground flare burner fixed in a flare cylinder (12) comprising a flare gas pipe (1), the upper end of which is closed, characterized in that, An air ring pipe (2) is concentrically arranged on the outer side of the upper end of the flare gas pipe (1). The flare gas pipe (1) and the air ring pipe (2) are fixedly connected by multiple air pipes (4). The air pipes (4) are connected to the air ring pipe (2). Multiple mixed gas outlet holes (8) are opened at the upper end of the air pipes (4). An inner pipe (10) is concentrically arranged inside the air pipes (4). One end of the inner pipe (10) is sealed, and the other end of the inner pipe (10) is connected to the flare gas pipe (1). Openings are made on the pipe wall of the inner pipe (10). There are multiple flare gas outlets (11), and an air inlet pipe (6) is fixedly connected to the lower end of the air ring pipe (2). A steam ring pipe (3) is fixedly sleeved on the outside of the flare gas pipe (1) below the multiple air pipes (4). Multiple steam pipes (5) are evenly distributed and fixedly connected to the outer circumference of the steam ring pipe (3). The steam pipes (5) and the air pipes (4) are staggered. Multiple steam outlets (9) are opened at the upper end of the steam pipes (5). A steam inlet pipe (7) is fixedly connected to the lower end of the steam ring pipe (3).
2. The ground flare burner of claim 1, wherein, The plurality of air pipes (4) are evenly distributed around the axial circumference of the flare pipe (1).
3. The ground flare burner of claim 1, wherein, The air ring pipe (2) is fixedly connected to the inner wall of the torch tube (12).
4. The ground flare burner of claim 1, wherein, The multiple steam outlets (9) at the upper end of the steam pipe (5) are arranged in two rows, and the two rows of steam outlets (9) are inclined toward the two air pipes (4) respectively.
5. The ground flare burner of claim 1, wherein, The flare outlet (11) and the mixed gas outlet (8) are offset.
6. The ground flare burner of claim 1, wherein, A continuous lamp is installed inside the torch tube (12) above the air ring tube (2).
7. The ground flare burner of claim 1, wherein, A flame stabilizing ring is fixed at the upper end of the torch tube (12), and the flame stabilizing ring has a plate-shaped spiral structure.