Energy-saving and efficient vapor smoke eliminating combustion device for industrial torch

Abstract

This utility model relates to the technical field of industrial waste gas treatment equipment, and in particular to an energy-saving and efficient steam smoke elimination combustion device for an industrial flare, comprising a combustion body, an ejector assembly, a steam supply assembly, and a noise reduction structure. The combustion body has an inlet end for introducing the gas to be treated, and at least two cylindrical sections are arranged sequentially along the axial direction, with adjacent cylindrical sections connected by a transition section. The outlet end of the combustion body is provided with a flame stabilizing mechanism. The noise reduction structure is located outside the combustion body and forms an accommodating space. The steam supply assembly is located within the accommodating space and is provided with at least one steam nozzle. The ejector assembly includes an ejector channel and an enhanced ejector element. One end of the ejector channel is located within the accommodating space and is arranged corresponding to the steam nozzle, while the other end extends to the outlet end of the combustion body. The enhanced ejector element is located at the inlet end of the ejector channel to enhance the air ejection effect.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial waste gas treatment equipment, and in particular to an energy-saving and efficient steam smoke elimination combustion device for flare systems in oil refining, petrochemical and coal chemical enterprises. Background Technology

[0002] As oil refining, petrochemical, and coal chemical enterprises adjust their production processes and diversify their products, the composition of their emitted flare gases fluctuates frequently. When the emitted flare gas contains a large proportion of saturated alkanes (C3 and above), unsaturated olefins, cycloalkanes, or large organic molecules, black smoke is produced during combustion. Steam suppression is a common method, but the steam supply capacity of most enterprises is limited by boiler load, and the steam supply to the flare zone is often restricted, thus affecting the flare gas suppression coefficient. When the flare gas emission exceeds the emission volume corresponding to the suppression coefficient, the combustion of the flare gas produces a large amount of black smoke, causing serious environmental pollution and failing to meet environmental emission requirements. Therefore, under the condition of limited steam supply in the plant area, improving the smoke suppression coefficient and smokeless combustion capability of burners is of great significance. Utility Model Content

[0003] The purpose of this invention is to solve the technical problem that existing steam smoke elimination burners have insufficient smoke elimination capacity when the steam supply is limited, and to provide an energy-saving and efficient steam smoke elimination combustion device for industrial flares that is reasonably designed, has low energy consumption, and high smoke elimination efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An energy-saving and efficient steam smoke elimination combustion device for an industrial flare includes a combustion body, an ejector assembly, a steam supply assembly, and a noise reduction structure. The combustion body has an inlet end for introducing the gas to be treated, and at least two cylindrical sections are arranged sequentially along the axial direction, with adjacent cylindrical sections connected by a transition section. The outlet end of the combustion body is provided with a flame stabilizing mechanism. The noise reduction structure is located outside the combustion body and forms an accommodating space. The steam supply assembly is located within the accommodating space and is provided with at least one steam nozzle. The ejector assembly includes an ejector channel and an enhanced ejector element. One end of the ejector channel is located within the accommodating space and is arranged corresponding to the steam nozzle, while the other end extends to the outlet end of the combustion body. The enhanced ejector element is located at the inlet end of the ejector channel to enhance the air ejection effect.

[0005] Furthermore, the enhanced ejector has a flared section and a constricted section, with the flared section facing the steam nozzle and an airflow gap formed between them; the enhanced ejector utilizes the Venturi effect to receive high-speed steam jets through the flared section and accelerate the mixing of airflow in the constricted section to form a strong negative pressure zone, significantly improving the air entrainment volume.

[0006] Furthermore, the combustion body includes a lower cylinder section, a conical transition section and an upper cylinder section connected in sequence. The top of the upper cylinder section is provided with a flame stabilization mechanism. The conical transition section can optimize airflow guidance and reduce resistance loss. The flame stabilization mechanism includes a flame stabilization component and a flame support component. The flame stabilization component and the flame support component cooperate to ensure flame stability and avoid flameout or backfire.

[0007] Furthermore, the steam supply assembly includes an annular pipe and at least one steam inlet, with steam nozzles distributed circumferentially along the annular pipe, and the axis of the steam nozzles collinear with the axis of the efficiency-enhancing ejector; the annular pipe ensures uniform steam supply, and the collinearly arranged nozzles and efficiency-enhancing ejector can reduce fluid impact loss and improve energy utilization efficiency.

[0008] Furthermore, the ejector channel is a pipe structure with a bend at the bottom, and there is at least one ejector channel. The bottom of the ejector channel passes through a conical transition section and is correspondingly set with the steam nozzle. The top of the ejector channel is evenly distributed along the circumference of the upper cylinder section of the combustion body. The multi-channel design can make the air and flare gas mix more evenly and avoid local oxygen shortage.

[0009] Furthermore, the noise reduction structure is a cover structure that is closed at the bottom and open at the top, and an accommodating space is formed between the inner wall of the cover and the outer wall of the combustion body; the noise reduction structure can reduce the noise generated by steam injection and airflow disturbance, while providing protection for the steam system and ejector assembly.

[0010] The beneficial effects of this utility model are as follows: This invention significantly increases the steam flow rate at the inlet of the ejector channel through the design of the ejector and ejector channel, thereby creating a larger pressure difference at the large opening of the ejector. This allows more air to be drawn in and mixed into the exhaust gas through the ejector channel. Under the same steam consumption conditions, more air can be drawn in, greatly improving the smoke elimination coefficient, reducing the risk of incomplete combustion of exhaust gas and producing black smoke, thus improving the smoke elimination effect and avoiding serious environmental pollution consequences.

[0011] The segmented design of the combustion body of this utility model makes it easy to adjust the size according to different processing volume requirements, which is highly adaptable. It also integrates a noise reduction structure, taking into account both environmental protection requirements and optimization of the operating environment. The layout of each component is compact, easy to install and maintain, and can be directly used for the upgrade and transformation of existing flare systems. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the high-efficiency steam smoke elimination combustion device of this utility model; In the diagram, 1-lower cylinder section, 2-steam ring pipe, 3-steam nozzle, 4-high-efficiency ejector, 5-silencer, 6-conical transition section, 7-ejector tube, 8-upper cylinder section, 9-flame stabilization mechanism. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] like Figure 1 As shown, an energy-saving and efficient steam smoke elimination combustion device for an industrial flare includes a combustion body, an ejector assembly, a steam supply assembly, and a noise reduction structure. Combustion body: It is composed of a lower cylinder section 1, a conical transition section 6 and an upper cylinder section 8 welded together in sequence. The bottom end of the lower cylinder section 1 is provided with an exhaust gas inlet, and the top end of the upper cylinder section 8 is equipped with a flame stabilization mechanism 9 consisting of a flame stabilizing plate and a flame support ring. Noise reduction structure: It is a soundproof cover 5, the bottom of which is sealed to the outer wall of the lower cylinder section 1, the top is open, and an annular space is formed inside; Steam supply assembly: includes a steam ring pipe 2, which is fixedly installed on the inner wall of the silencer 5. The bottom of the steam ring pipe 2 is provided with multiple steam inlets (evenly distributed along the circumference of the ring pipe), and the top of the steam ring pipe 2 is provided with a steam nozzle 3. Ejector assembly: includes ejector tube 7 and built-in high-efficiency ejector 4. The lower end of ejector tube 7 is located inside silencer 5 and high-efficiency ejector 4 is built into the lower inlet of ejector tube 7. The lower end of ejector tube 7 passes through conical transition section 6 and is laid parallel to the axis of upper cylinder section. The upper end is flush with flame stabilization mechanism 9. The flared section of high-efficiency ejector 4 faces steam nozzle 3, and the gap between the two is 10mm. The cone angle of the flared section is 45° and the length of the contraction section is 1.5 times that of the flared section.

[0015] Working principle: Flame gas enters the combustion body from the lower cylinder section 1. After being distributed by the steam ring pipe 2, the steam is ejected at high speed by the steam nozzle 3. The kinetic energy of the high-speed steam ejected by the steam nozzle 3 is used to drive the surrounding air through the high-efficiency ejector 4 into the ejector tube 7. The high-efficiency ejector 4 further accelerates the mixture of steam and air to impact the flaring section of the high-efficiency ejector 4. A strong negative pressure is formed in the contraction section, which draws in air through the ejector tube 7 into the upper cylinder section 8. After being fully mixed with the flame gas, complete combustion is achieved under the action of the flame stabilization mechanism 9, eliminating black smoke.

[0016] As an optional embodiment, there are 4 ejector tubes 7, and 4 corresponding steam nozzles 3, which are distributed at 90° intervals along the circumference of the combustion body.

[0017] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An energy-saving and high-efficiency steam smoke elimination combustion device for an industrial flare, comprising a combustion body, an ejector assembly, a steam supply assembly, and a noise reduction structure, wherein the combustion body has an inlet end for introducing the gas to be treated, characterized in that: The combustion body is provided with at least two cylindrical sections in sequence along the axial direction, and adjacent cylindrical sections are connected by a transition section. The gas outlet end of the combustion body is provided with a flame stabilizing mechanism. The noise reduction structure is located on the outside of the combustion body and forms an accommodating space. The steam supply assembly is located in the accommodating space and is provided with at least one steam nozzle. The ejector assembly includes an ejector channel and an efficiency-enhancing ejector. One end of the ejector channel is located in the accommodating space and is provided with a corresponding steam nozzle. The other end extends to the gas outlet end of the combustion body. The efficiency-enhancing ejector is provided at the air inlet end of the ejector channel to enhance the air ejection effect.

2. The industrial flare energy efficient vapor assisted smokeless combustion device of claim 1, wherein: The enhanced ejector has a flared section and a constricted section, the flared section facing the steam nozzle and forming an airflow gap between them.

3. The industrial flare energy efficient vapor consumption smokeless combustion device of claim 1, wherein: The combustion body includes a lower cylinder section, a conical transition section and an upper cylinder section connected in sequence. The flame stabilization mechanism is provided at the top of the upper cylinder section. The flame stabilization mechanism includes a flame stabilization component and a flame support component.

4. The industrial flare energy efficient vapor lockout combustion device of claim 1, wherein: The steam supply assembly includes an annular pipe and at least one steam inlet. The steam nozzles are distributed circumferentially along the annular pipe, and the axis of the steam nozzles is collinear with the axis of the booster ejector.

5. The industrial flare energy efficient vapor lockout combustion device of claim 1, wherein: The ejector channel is a pipe structure with a bend at the bottom, and there is at least one ejector channel. The bottom of the ejector channel passes through a conical transition section and is correspondingly set with the steam nozzle. The top of the ejector channel is evenly distributed circumferentially along the upper cylinder section of the combustion body.

6. The industrial flare energy efficient vapor lockout combustion device of claim 1, wherein: The noise reduction structure is a cover structure that is closed at the bottom and open at the top, and the inner wall of the cover and the outer wall of the combustion body form the accommodating space.

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