Guiding type torch burner

Abstract

The invention provides a guide type torch burner which comprises a torch blow-down pipe, a guide cylinder, a windproof air guide ring, guide cylinder fixing round steel, guide cylinder supporting round steel, a windproof air guide ring fixing rib plate, a self-adjusting air door plate assembly and a self-adjusting air door plate stop pin. The bottom of the guide cylinder is welded with guide cylinder supporting round steel in the windproof air guide ring and keeps a certain distance from the upper part of the torch blow-down pipe; the outer wall of the middle upper part of the guide cylinder is welded with the inner wall of the windproof air guide ring through guide cylinder fixing round steel; two ends of the windproof air guide ring fixing rib plate are respectively welded on the torch blow-down pipe and the windproof air guide ring; and a lever self-adjusting air door plate assembly and a self-adjusting air door plate stop pin are arranged at the lower part of the windproof air guide ring. The structure is simple, the popularization range is wide, an existing diffusion combustion type torch combustor can be simply transformed, and stable and safe combustion of the combustor under the large, medium and small working conditions can be achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of safety and environmental protection, and in particular relates to a guide-type flare burner, and in particular relates to a guide-type flare burner which can maintain stable combustion and improve the exhaust gas burnout rate as the amount of gas emission changes. Background Art

[0002] The flare system is an important safety emission facility in petrochemical enterprises. Its function is to treat the unbalanced gas in the petrochemical equipment and the emergency emission gas during start-up, shutdown and accidents. The emission gas is flammable, explosive and toxic, and may also contain highly toxic substances such as hydrogen sulfide. The emission gas needs to be discharged to the venting torch for combustion treatment. In order to meet the environmental emission standards and safety production requirements, the flare burner is required to achieve a very high burnout rate.

[0003] Most existing flare burners are diffusion combustion type. The flare flame is exposed to the external atmosphere without effective air combustion support. It is greatly affected by the outside world, and the flare gas is not completely burned and decomposed, which is easy to cause extreme harm to the environment. In addition, due to the instability of the exhaust gas volume, there is a situation where the air-fuel ratio is less than 3, resulting in incomplete combustion and black smoke from the flame, causing air pollution. The air-fuel ratio for normal combustion without smoke is generally above 3.

[0004] Most existing flare burners are of the diffusion combustion type, which has the following shortcomings: (1) The flare combustion flame is exposed to the external atmospheric environment, without effective air to assist combustion, and is greatly affected by the outside world. The flare gas is not completely burned and decomposed, which can easily cause extreme harm to the environment; (2) The commonly used tubular flare head has too concentrated air flow at the flare outlet, and the air distribution inside and outside the flame zone is extremely uneven, and the center "oxygen deficiency" phenomenon often occurs, affecting the combustion effect; (3) There is no effective cascade adjustment between the flare gas co-combustion gas volume and the combustion temperature inside the heat storage chamber at the flare burner outlet, and there is a lack of effective burnout guarantee for the exhaust gas with high burnout rate requirements; (4) Under the condition of limited burnout rate, in order to meet the requirements of environmental protection indicators, in addition to taking limited measures such as co-combustion of high calorific value gas, sometimes the only way is to artificially increase the design height of the flare, and the construction cost of the flare project also increases accordingly.

[0005] Through inquiry, it is known that the existing flare burners are:

[0006] Application No. 2022108529427 Patent Name: A New Type of Air Smoke Suppression Type Torch Burner. The present invention discloses a new type of air smoke suppression type torch burner, comprising the following steps: by setting a conical wind tube outlet, a fire-gathering block and a flame-stabilizing hole structure on the outside of the torch burner, the air and the torch gas are fully mixed to ensure the safe, stable and environmentally friendly combustion of the torch gas. The jet and entrainment principle of the torch gas is utilized to promote the initial mixing of the air and the torch gas; the conical wind tube outlet structure is utilized to increase the flow rate of the mixed gas to achieve further mixing of the air and the torch gas, and more peripheral air can be entrained to participate in the combustion; the flow resistance effect of the fire-gathering block and the fuel cohesion effect of the flame-stabilizing hole are utilized to form a low-speed zone of the combustible material, ensuring that the burner can burn stably and safely. Although the outlet of this invention has a taper, it is a closed integrated one. When the gas volume is large, the air-fuel ratio is less than 3, resulting in poor combustion. It can be used when the gas volume is not particularly large and relatively stable. When the exhaust volume is particularly large, it is easy to cause rewinding and affect air mixing.

[0007] Application number 2022102284267 Patent name: A closed ground flare burner. The present invention discloses a closed ground flare burner, including a base, a front cylinder vertically arranged on the top surface of the base, the side of the front cylinder horizontally connected with an air inlet pipe, a flame arrester connected to the top flange, the top flange of the flame arrester is connected to a rear cylinder, the rear cylinder is composed of an inverted cone section, a cylindrical section rotatably connected to the top of the inverted cone section, and an end cover blocked at the top of the cylindrical section, a plurality of air outlet holes are circumferentially spaced on the circumferential side of the cylindrical section, and each air outlet hole corresponds to the inner wall of the cylindrical section. A reinforcing rib plate is provided on each of the above parts, and a through hole corresponding to the air outlet is provided on the reinforcing rib plate. A horizontal tube is connected to the outer wall of the cylindrical section corresponding to each air outlet, and the tail end of the horizontal tube is connected to a same-diameter elbow tube, and the tail end of the same-diameter elbow tube faces upward and is connected to a vertical tube. The top of the vertical tube is detachably connected to a nozzle, and the nozzle is composed of a first cylindrical tube, a conical tube, a second cylindrical tube and an inverted conical tube from bottom to top. The bottom end of the first cylindrical tube is connected to the top of the vertical tube, and the top of the inverted conical tube is provided with a jet port. This invention has a complex structure, and is easily blown out by wind when the exhaust volume is small, which has the problem of environmental pollution.

[0008] The functional structure of the above patent shows that the quality of mixed combustion cannot be fully guaranteed when the exhaust volume changes greatly, and there is an environmental pollution problem.

[0009] Therefore, it is necessary to provide a guide flare burner to ensure stable and safe combustion under all working conditions of large, medium and small burners. Summary of the invention

[0010] The purpose of the present invention is to make up for the shortcomings of the prior art and provide a guide-type flare burner to ensure stable and safe combustion of the burner under all working conditions of large, medium and small sizes.

[0011] A guide type flare burner comprises a flare vent pipe, a guide tube, a windproof air guide ring, a guide tube fixing round steel, a guide tube supporting round steel, a windproof air guide ring fixing rib plate, a self-adjusting air door plate assembly, and a self-adjusting air door plate stop pin.

[0012] The guide tube supporting round steel is arranged inside the windproof air guide ring, and the guide tube is fixed to the upper part of the flare venting pipe mouth through the guide tube supporting round steel.

[0013] The bottom of the guide tube is welded to the guide tube supporting round steel and keeps a certain distance from the upper part of the flare vent pipe;

[0014] The middle and upper outer wall of the guide tube is welded to the inner wall of the windproof air guide ring through the guide tube fixing round steel, so as to ensure the stability and safety of the guide tube;

[0015] The windproof air guide ring fixed ribs are uniformly arranged with 6 ribs along the circumference, and the two ends are respectively welded to the flare vent pipe and the windproof air guide ring;

[0016] The lower part of the windproof air guide ring is provided with a lever self-adjusting air flap assembly and a self-adjusting air flap stop pin, and the number of the self-adjusting air flap stop pins is 6;

[0017] The lever self-adjusting damper plate assembly is composed of 6 single-piece damper plates, which are respectively in contact with 6 self-adjusting damper plate stop pins.

[0018] Furthermore, the guide tube is a conical cylinder structure that is small at the top and large at the bottom. The diameter of the upper tube opening of the guide tube is larger than the diameter of the flare venting tube opening and smaller than the diameter of the lower tube opening of the guide tube. The diameter of the lower tube opening of the guide tube is larger than the diameter of the flare venting tube opening and smaller than the diameter of the windproof air guide ring. The guide tube, the flare venting tube opening and the windproof air guide ring are concentric.

[0019] Furthermore, the single-piece damper plate is provided with a damper plate sleeve and a damper plate, the damper plate and the damper plate are fixedly connected, and the damper plate sleeve is sleeved on the windproof air guide ring fixing rib plate.

[0020] Furthermore, the radial edges of the single damper plate are superimposed and overlapped, and the circumferential edges are in an involute shape.

[0021] Furthermore, when venting air is discharged from the flare vent pipe, the single-piece damper plate opens upward, automatically adjusts the opening according to the amount of venting air, and falls back to a horizontal state under the action of gravity after the venting air is completed.

[0022] The embodiments of the present invention bring the following beneficial effects:

[0023] The guide-type flare burner of the present invention utilizes the gas dynamics principle of chimney suction to form an enhanced suction effect of natural gas exhaust gas, so that the natural gas exhaust gas is fully mixed with air to achieve a fully burned state, thereby improving the burnout rate of natural gas. When the amount of natural gas exhaust gas increases, the amount of air sucked up around the guide tube also increases accordingly, eliminating the situation of incomplete combustion during flare combustion and controlling the occurrence of environmental pollution events. The present invention has a simple structure and a wide range of promotion. It can be simply modified on the existing diffusion combustion type flare burner, so that the burner can burn stably and safely under all working conditions of large, medium and small.

[0024] The guide pipe uses the principle of the self-ventilation capacity of the chimney. The higher the chimney, the greater the self-ventilation capacity. This innovative achievement is a dual-guide exhaust design that can cope with changes in large and small exhaust volumes. When the exhaust volume is small, the air guided by the guide pipe is fully mixed with the exhaust gas from the vent and burned at the bottom. When the exhaust volume gradually increases, the exhaust gas that impacts the conical guide pipe increases. The conical closing of the guide tube can increase the exhaust gas flow rate and guide the exhaust gas to blow higher into the sky. First, it can enhance the air suction capacity, and second, it can be fully mixed with the surrounding air to increase the burnout rate. The amount of accompanying gas of the flare gas and the combustion temperature inside the heat storage chamber at the outlet of the flare burner form an effective cascade adjustment, which effectively guarantees the burnout of the exhaust gas with high burnout rate requirements.

[0025] Other features and advantages of the present invention will be described in the following description, and some features will become apparent from the description or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a pilot-type flare burner provided in an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the structure of a windproof air guide ring of a pilot-type flare burner provided in an embodiment of the present invention;

[0029] Figure 3 A self-adjusting damper plate of a pilot-type flare burner provided in an embodiment of the present invention;

[0030] Figure 4 A side view of a damper plate of a pilot flare burner provided in an embodiment of the present invention.

[0031] The symbols in the figure mean the following:

[0032] 1- flare vent pipe, 2- guide tube, 3- windproof air guide ring, 4- guide tube fixing round steel, 5- guide tube supporting round steel, 6- windproof air guide ring fixing rib, 7- self-adjusting damper plate assembly, 7-1- single-piece damper plate, 7-1-1 damper plate sleeve, 7-1-2 damper plate, 8- self-adjusting damper plate stop pin. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1-2 As shown, an embodiment of the present invention provides a guide type flare burner, comprising a flare vent pipe 1, a guide tube 2, a windproof air guide ring 3, a guide tube fixing round steel 4, a guide tube supporting round steel 5, a windproof air guide ring fixing rib plate 6, a self-adjusting air door plate assembly 7, and a self-adjusting air door plate stop pin 8,

[0035] The guide tube supporting round steel 5 is arranged inside the windproof air guide ring 3, and the guide tube 2 is fixed to the upper part of the flare venting pipe mouth 1 through the guide tube supporting round steel 5.

[0036] The bottom of the guide tube 2 is welded to the guide tube supporting round steel 5 and maintains a certain distance from the upper part of the flare vent pipe 1;

[0037] The middle and upper outer wall of the guide tube 2 is welded to the inner wall of the windproof air guide ring 3 through the guide tube fixing round steel 4, so as to ensure the stability and safety of the guide tube 1;

[0038] The guide tube 2 is a tapered tube structure with a small top and a large bottom. The diameter of the upper tube opening of the guide tube 2 is larger than the diameter of the flare venting tube opening 1 but smaller than the diameter of the lower tube opening of the guide tube 2.

[0039] The diameter of the lower pipe opening of the guide tube 2 is larger than the diameter of the flare venting pipe opening 1 but smaller than the diameter of the windproof air guide ring 3, and the guide tube 2, the flare venting pipe opening 1 and the windproof air guide ring 3 are concentric.

[0040] The windproof air guide ring fixing ribs 6 are uniformly arranged along the circumference, and the two ends are respectively welded to the flare vent pipe 1 and the windproof air guide ring 3;

[0041] Furthermore, a lever self-adjusting damper plate assembly 7 is provided at the lower part of the windproof air guide ring 3. The greater the air extraction volume, the greater the damper plate opens, thereby ensuring that the air-fuel ratio reaches the best and preventing the torch from being blown out due to excessive air extraction volume.

[0042] Among them, Figure 3-4 As shown, the self-adjusting damper plate assembly 7 is composed of 6 single damper plates 7-1, and the single damper plate 7-1 is provided with a damper plate cover 7-1-1 and a damper plate 7-1-2, and the damper plate cover 7-1-1 and the damper plate 7-1-2 are fixedly connected, and the damper plate cover 7-1-1 is sleeved on the windproof air guide ring fixed rib plate 6,

[0043] In this embodiment, the radial edges of the six single-piece damper plates 7 - 1 of the self-adjusting damper plate assembly 7 are superimposed and overlapped, and the circumferential edges are in an involute shape.

[0044] Furthermore, the lower part of the windproof air guide ring 3 is provided with 6 self-adjusting air door plate stop pins 8;

[0045] The six single-piece damper plates 7-1 open upward when venting air is discharged from the flare vent pipe 1, and automatically adjust the opening according to the amount of venting air. After the venting is completed, they fall back to a horizontal state under the action of gravity and contact the six self-adjusting damper plate stop pins 8 respectively.

[0046] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pilot-type flare burner, characterized in that: It includes a flare vent pipe, a guide tube, a windproof air guide ring, a guide tube fixing round steel, a guide tube supporting round steel, a windproof air guide ring fixing rib plate, a self-adjusting damper plate assembly, and a self-adjusting damper plate stop pin. The guide tube supporting round steel is arranged inside the windproof air guide ring, and the guide tube is fixed to the upper part of the flare venting pipe mouth through the guide tube supporting round steel. The bottom of the guide tube is welded to the guide tube supporting round steel and has a certain distance from the upper part of the flare vent pipe; The middle and upper outer wall of the guide tube is welded to the inner wall of the windproof air guide ring through the guide tube fixing round steel, so as to ensure the stability and safety of the guide tube; The windproof air guide ring fixed ribs are uniformly arranged with 6 ribs along the circumference, and the two ends are respectively welded to the flare vent pipe and the windproof air guide ring; The lower part of the windproof air guide ring is provided with a lever self-adjusting air flap assembly and a self-adjusting air flap stop pin, and the number of the self-adjusting air flap stop pins is 6; The lever self-adjusting damper plate assembly is composed of 6 single-piece damper plates, which are respectively in contact with 6 self-adjusting damper plate stop pins.

2. The pilot flare burner according to claim 1, characterized in that: The guide tube is a conical tube structure with a small top and a large bottom. The diameter of the upper pipe opening of the guide tube is larger than the diameter of the flare venting pipe opening and smaller than the diameter of the lower pipe opening of the guide tube. The diameter of the lower pipe opening of the guide tube is larger than the diameter of the flare venting pipe opening and smaller than the diameter of the windproof air guide ring.

3. The pilot flare burner according to claim 2, characterized in that: The guide tube, the flare venting pipe opening and the windproof air guide ring are concentric.

4. The pilot flare burner according to claim 1, characterized in that: The single-piece damper plate is provided with a damper plate sleeve and a damper plate, the damper plate and the damper plate are fixedly connected, and the damper plate sleeve is sleeved on the windproof air guide ring fixing rib plate.

5. The pilot flare burner according to claim 1, characterized in that: The radial edges of the single damper plate are superimposed and overlapped, and the circumferential edges are in an involute shape.

6. The pilot flare burner according to claim 1, characterized in that: The single-piece damper plate opens upward when venting air is discharged from the flare vent pipe, and automatically adjusts the opening according to the amount of venting air. After the venting is completed, the damper plate falls back to a horizontal state under the action of gravity.

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