A new type of air smoke elimination torch burner

Abstract

A new type of air smoke suppression flare burner is characterized in that it includes a conical ductor outlet, a cylinder, a flare gas pipeline, a burner branch, a fire gathering block, a flame stabilizing hole, and a gas burning hole. The present invention achieves full mixing of air and flare gas by arranging a conical ductor outlet, a fire gathering block and a flame stabilizing hole structure outside the flare burner, thereby ensuring safe, stable and environmentally friendly combustion of the flare gas. The jet and entrainment principle of the flare gas is utilized to promote the initial mixing of air and flare gas; the conical ductor outlet structure is utilized to increase the flow rate of the mixed gas to achieve further mixing of air and flare 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 combustibles, ensuring stable and safe combustion of the burner under all working conditions of large, medium and small sizes.

Description

Technical Field

[0001] The invention relates to a flare burner, in particular to a burner for treating waste gas in the industrial fields of petroleum, chemical industry, metallurgy, plastics, etc., specifically to a new type of air smoke elimination type flare burner. Technical Background

[0002] Flare burners are widely used in industrial fields such as petroleum, chemical industry, metallurgy, and plastics. Flare burners generally mix and burn air and flare gas in a certain way, and release toxic and harmful flare gas into harmless carbon dioxide and water in an environmentally friendly way through combustion. When the air and flare gas are not mixed sufficiently, the flare gas cannot be completely burned, and a large amount of black smoke is generated, causing environmental pollution; conventional flare burners use steam and compressed air to entrain air and mix with flare gas for smoke elimination, but in the absence of public engineering conditions such as steam or compressed air, blowers can also be used for smoke elimination, which is called air smoke elimination type flare burners. Conventional air smoke elimination type flare burners cannot guarantee both the combustion smoke elimination effect and combustion stability at the same time. The blower consumes a lot of energy for smoke elimination, or there is a risk of unstable flame combustion. Therefore, it is necessary to further optimize the flare burner. Summary of the invention

[0003] The purpose of the present invention is to solve the problem of incomplete combustion in the combustion process of existing flare burners and to invent a new type of air smoke elimination type flare burner, which achieves a smokeless effect while ensuring full and stable combustion of the flare gas by improving the mixing mode of flare gas and air.

[0004] The technical solution of the present invention is:

[0005] A novel air smoke suppression flare burner comprises a duct and a flare gas pipeline, and is characterized in that: a conical duct is provided at the outlet end of the duct, and a fire gathering block is provided on the inner side of the small end of the conical duct; the flare gas pipeline is located in the duct, and a burner branch is installed at the upper end of the flare gas pipeline, and a flame stabilizing hole and a gas burning hole are provided on the burner branch; air flows into the conical duct through the cylinder from bottom to top, and under the action of the conical structure, the air flow rate and the injection momentum are increased to achieve the purpose of fully mixing the air and the flare gas, and more secondary air is sucked in to participate in the combustion; the flare gas is ejected from the flame stabilizing hole and the gas burning hole respectively after passing through the flare gas pipeline and the burner branch, and the high-speed suction principle of the flame stabilizing hole and the gas burning hole is utilized to promote the preliminary mixing of the air and the flare gas; the fire gathering hole arranged on the fire gathering block, which can produce a low-speed zone of combustibles at the outlet of the conical duct, enables the burner to burn stably and safely; the axis of the flame stabilizing hole is inclined toward the center of the burner to ensure that a diffuse combustion area is maintained in the center of the burner to achieve smokeless combustion.

[0006] The outer diameter of the wind tube is a minimum of 400mm and a maximum of 1000mm depending on the flare gas processing capacity.

[0007] The taper angle of the conical wind tube is between 10 and 40 degrees, the inclined length of the conical structure is between 50 and 500 mm, and the outlet diameter of the conical wind tube is between 360 mm at minimum and 960 mm at maximum according to the flare gas processing capacity.

[0008] The fire gathering block is installed at the outlet of the conical wind tube, the diameter of the fire gathering hole arranged thereon is 2-20mm, the number of the fire gathering blocks is 2-8, and they are aligned with the branches of the burner.

[0009] The fire-gathering block is composed of a straight section and a curved section, and a fire-gathering hole is provided on the curved section. The fire-gathering hole is preferably a conical hole structure, and the fire-gathering hole can produce a low-speed zone of combustibles at the outlet of the conical air duct.

[0010] The flame stabilizing hole is inclined at an angle of 10 to 30 degrees toward the center of the burner to ensure that a diffusion combustion area is maintained in the center of the burner.

[0011] The beneficial effects of the present invention are:

[0012] 1. By setting flame stabilizing holes 6 and gas burning holes 7 on the branches 4 of the flare burner, the entrainment principle of the injection momentum of the flare gas fire focusing hole 9 is utilized to promote the initial mixing of the primary air and the flare gas.

[0013] 2. The conical ductor outlet 1 structure is used to increase the initial mixed gas velocity and enhance the injection momentum, thereby achieving full mixing of the primary air and the flare gas, while entraining more surrounding secondary air to participate in the combustion, ensuring full and smokeless combustion of the flare gas.

[0014] 3. The fire-gathering block 5 and the fire-gathering hole 9 can be used to generate a low-velocity zone of combustibles at the outlet of the conical ductor. At the same time, the flame-stabilizing hole 6 is inclined 10-30 degrees toward the center of the burner to ensure that a diffuse combustion area is maintained in the center of the burner, so that the burner can ensure stable and safe combustion at large, medium and small flow rates without problems such as flameout and unstable combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 for Figure 1 Top view of the .

[0017] Figure 3 It is a schematic diagram of the structure of the fire-gathering block of the present invention.

[0018] Figure 4 It is an expanded view of the fire-gathering block structure of the present invention.

[0019] In the figure: 1-conical air duct outlet, 2-air duct, 3-flare gas pipeline, 4-burner branch, 5-fire focusing block, 6-flame stabilizing hole, 7-gas hole, 8-bolt hole, 9-fire focusing hole. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1 shown.

[0022] A novel air smoke elimination type flare burner comprises a wind tube 2 and a flare gas pipeline 3. The outer diameter of the wind tube 2 is 400 mm at the minimum and 1000 mm at the maximum according to the flare gas processing capacity. Figure 1 As shown, a conical wind tube 1 is provided at the outlet end of the wind tube 2, and a fire gathering block 5 is provided inside the small end of the conical wind tube 1. The fire gathering block 5 is installed at the outlet of the conical wind tube 1, and the diameter of the fire gathering hole 9 provided thereon is 2-20mm, and it is preferably a conical hole structure to produce a low-speed zone of combustibles, such as Figure 3 As shown. The number of fire-gathering holes 9 on a single fire-gathering block is 2-8, and the number of fire-gathering blocks 5 is 2-8, and they are aligned with the burner branches 4. The fire-gathering block 5 is composed of straight segments and curved segments, such as Figure 3 As shown, fire-gathering holes 9 are provided on the straight section and the curved section. The curved section has double rows of holes, and the straight section has single rows of holes. The curved section has an S-shaped structure. The fire-gathering holes 9 with a conical structure can produce a low-speed zone of combustibles at the outlet of the conical wind tube 1. The taper angle of the conical wind tube 1 is between 10 and 40°, and the inclined length of the conical structure is between 50 and 500 mm. The outlet diameter of the conical wind tube 3 is a minimum of 360 mm and a maximum of 960 mm depending on the flare gas processing volume. The flare gas pipeline 3 is located in the wind tube 2, and a burner branch 4 is installed at the upper end of the flare gas pipeline 3. The burner branch 4 is provided with a flame stabilizing hole 6 and a gas hole 7, as shown in FIG. Figure 2 As shown, air flows into the conical wind tube 1 through the cylinder 2 from bottom to top. Under the action of the conical structure, the air flow rate and injection momentum are increased to achieve the purpose of fully mixing the air and the flare gas, and more secondary air is sucked in to participate in the combustion; the flare gas passes through the flare gas pipeline 3 and the burner branch 4 and is ejected from the flame stabilizing hole 6 and the gas hole 7 respectively. The high-speed suction principle of the flame stabilizing hole 6 and the gas hole 7 is used to promote the initial mixing of air and the flare gas; the fire-gathering hole 9 arranged on the fire-gathering block 5, which can produce a low-speed zone of combustibles at the outlet of the conical wind tube 1, enables the burner to burn stably and safely; the axis of the flame stabilizing hole 6 is inclined to the center of the burner by 10 to 30 degrees to ensure that a diffuse combustion area is maintained in the center of the burner to achieve smokeless combustion.

[0023] The working principle of the present invention is:

[0024] Air enters from the air duct 2, along the outside of the flare gas pipeline 3, bypasses the outside of the burner branch 4, enters the conical air duct outlet 1 and is discharged. The flare gas enters from the inside of the flare gas pipeline 3, passes through the burner branch 4, and is ejected from the flame stabilizing hole 6 and the gas hole 7 respectively, enters the conical air duct outlet 1 and is discharged.

[0025] The air and the flare gas enter the conical duct outlet 1 respectively. First, the flare gas fire-gathering hole 9 injection principle is used to draw in the surrounding air and promote the initial mixing of the gas and air. Secondly, the conical duct outlet 1 structure is used to increase the flow rate of the mixed gas, achieve further mixing of the air and the flare gas, and strengthen the entrainment of the surrounding secondary air to participate in the combustion. Finally, the fire-gathering block 5 structure can maintain the low-speed zone of the combustible material, so that the burner can burn stably and safely.

[0026] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. For those skilled in the art, the present invention can be modified and varied in many ways. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

[0027] The present invention does not involve parts that are the same as the prior art or can be implemented by using the prior art.

Claims

1. A novel air smoke elimination type flare burner, comprising a wind tube (2) and a flare gas pipeline (3), characterized in that: The outlet end of the wind tube (2) is provided with a conical wind tube (1), and a fire gathering block (5) is provided on the inner side of the small end of the conical wind tube (1); a flare gas pipeline (3) is located in the wind tube (2), and a burner branch (4) is installed on the upper end of the flare gas pipeline (3), and a flame stabilizing hole (6) and a gas burning hole (7) are provided on the burner branch (4); air flows from bottom to top through the cylinder (2) into the conical wind tube (1), and the air flow rate and injection momentum are increased under the action of the conical structure. The purpose of fully mixing air and flare gas is achieved, and more secondary air is sucked in to participate in combustion; the flare gas passes through the flare gas pipeline (3) and the burner branch (4) and is ejected from the flame stabilizing hole (6) and the gas hole (7) respectively, and the high-speed suction principle of the flame stabilizing hole (6) and the gas hole (7) is used to promote the initial mixing of air and flare gas; the burner can burn stably and safely by using the fire-gathering hole (9) arranged on the fire-gathering block (5) that can produce a low-speed zone of combustibles at the outlet of the conical wind tube; the axis of the flame stabilizing hole (6) is inclined toward the center of the burner to ensure that a diffusion combustion area is maintained in the center of the burner to achieve smokeless combustion; the fire-gathering block (5) is installed at the outlet of the conical wind tube (1), and the diameter of the fire-gathering hole (9) arranged thereon is 2 to 20 mm. The number of the fire-gathering blocks (5) is 2 to 8 and is aligned with the burner branch (4); the fire-gathering block (5) is composed of a straight section and a curved section, and the fire-gathering hole (9) is arranged on the curved section. The fire focusing holes (9) on the curved section are double-row holes, the fire focusing holes (9) are of a conical hole structure, and the fire focusing holes near the cylinder body of the wind tube are narrow at the bottom and wide at the top, and the fire focusing holes near the center of the burner are wide at the bottom and narrow at the top. The fire focusing holes (9) can produce a low-speed zone of combustibles at the outlet of the conical wind tube. The angle of the flame stabilizing hole (6) toward the center of the burner is 10 to 30 degrees; air enters from the wind tube, along the outside of the flare gas pipeline, bypasses the outside of the burner branches, enters the outlet of the conical wind tube and is discharged; The flare gas enters from the inside of the flare gas pipeline, passes through the burner branches, and is ejected from the flame stabilizing hole and the gas hole respectively, and enters the cone air duct outlet and is discharged; Air and flare gas enter into the outlet of the conical ductor respectively. Firstly, the principle of flare gas injection through the fire-gathering hole is utilized to draw in the surrounding air and promote the initial mixing of the gas and air. Secondly, the outlet structure of the conical ductor is utilized to increase the flow rate of the mixed gas, achieve further mixing of the air and flare gas, and strengthen the entrainment of the surrounding secondary air to participate in the combustion. Finally, the fire-gathering block structure is utilized to maintain the low-speed zone of the combustible material, so that the burner can burn stably and safely.

2. The novel air smoke elimination type torch burner according to claim 1 is characterized in that: The outer diameter of the air cylinder (2) is 400 mm at minimum and 1000 mm at maximum according to the flare gas handling capacity.

3. The novel air smoke elimination type torch burner according to claim 1 is characterized in that: The conical wind tube (1) has a taper angle of 10 to 40°, a slope length of the conical structure of 50 to 500 mm, and a conical wind tube outlet diameter of at least 360 mm and at most 960 mm depending on the flare gas processing volume.

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