A self-storing oxygen-enriched burner

Abstract

This utility model provides a self-regenerative oxygen-enriched burner, belonging to the technical field of combustion equipment. The self-regenerative oxygen-enriched burner includes a combustion chamber; side plates, which are bolted to the left and right ends of the combustion chamber; L-shaped tubes, which are fixedly connected to the left and right ends of the side plates; a heat storage body, which is fixedly connected inside the two L-shaped tubes; and a support, which is fixedly connected to the lower end of the combustion chamber. A reversing valve is connected to the support, and a connecting pipe connects the reversing valve to the L-shaped tubes. In this design, the heat storage body receives and stores heat transferred from high-temperature flue gas during combustion, and then uses this heat to subsequently heat the cold air or gas entering the combustion chamber, achieving efficient heat recovery and reuse, reducing energy waste, and improving combustion energy utilization efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of combustion equipment technology, specifically relating to a self-regenerative oxygen-enriched burner. Background Technology

[0002] Combustion is a crucial step in providing energy in many industrial production processes. However, traditional combustion equipment presents numerous problems in terms of energy utilization and environmental protection.

[0003] On the one hand, in terms of heat utilization, traditional combustion equipment often directly emits the high-temperature flue gas generated during combustion, resulting in a significant loss of heat along with the flue gas. For example, in some industrial heating furnaces, as much as 30%-50% of the heat is lost to the surrounding environment with the flue gas, which not only causes a huge waste of energy but also increases the burden on energy supply.

[0004] On the other hand, in terms of energy efficiency and pollutant emissions, traditional combustion equipment typically uses air-assisted combustion. However, the oxygen content in air is relatively low (approximately 21%), and a large amount of inert gases such as nitrogen participates in convective and radiative heat exchange during combustion, carrying away a significant amount of heat. Simultaneously, due to the low oxygen concentration, fuel is difficult to burn completely in a short time, easily producing incomplete combustion products such as carbon monoxide and hydrocarbons. The emission of these pollutants poses certain hazards to the environment and human health.

[0005] While some existing burners have addressed the aforementioned issues to some extent, they still have shortcomings in heat recovery and control of oxygen-enriched combustion. For example, the regenerator structure and layout of some burners are unreasonable, resulting in low heat recovery efficiency; and some oxygen-enriched burners are not precise enough in adjusting oxygen supply and mixing ratio, failing to achieve optimal combustion performance. Utility Model Content

[0006] The purpose of this invention is to provide a self-storing oxygen-enriched burner, which aims to solve the problems of large heat loss, low energy utilization efficiency, incomplete combustion, and high pollutant emissions in existing combustion equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A self-storing oxygen-enriched burner, comprising:

[0009] Combustion chamber;

[0010] Side plates, which are bolted and threaded to the left and right ends of the combustion chamber;

[0011] L-shaped tube, the L-shaped tube being fixedly connected to the left and right ends of the side plate;

[0012] A heat storage body, which is fixedly connected inside two L-shaped tubes;

[0013] A bracket is fixedly connected to the lower end of the combustion chamber. A reversing valve is connected to the bracket, and a connecting pipe connects the reversing valve to the L-shaped pipe.

[0014] In a preferred embodiment of this utility model, a funnel-shaped interface is fixedly connected to the lower end of the L-shaped tube, and a connecting valve is fixedly connected to the lower end of the funnel-shaped interface. The connecting valve is connected to the connecting tube.

[0015] As a preferred embodiment of this utility model, a flue gas discharge pipe is fixedly connected to one side of the reversing valve.

[0016] As a preferred embodiment of this utility model, a gas pipe is fixedly connected to the other end of the reversing valve.

[0017] In a preferred embodiment of this invention, an oxygen inlet is fixedly connected to the upper end of the combustion chamber.

[0018] In a preferred embodiment of this utility model, a base is fixedly connected to the lower end of the combustion chamber, a column is fixedly connected to the lower end of the base, and a side frame is fixedly connected to the side end of the column.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. In this design, the burner achieves efficient heat recovery and reuse through a heat storage medium. During combustion, a portion of the high-temperature flue gas flows through the heat storage medium via connecting pipes and reversing valves, transferring heat to the medium for storage. When subsequent cold air or gas enters the combustion chamber through the L-shaped pipe, it first passes through the heat storage medium, is heated by it, and then enters the combustion chamber. In this way, a large amount of heat that would otherwise be lost with the flue gas emissions is recovered and reused, reducing energy waste and improving the energy efficiency of the entire combustion process.

[0021] 2. In this design, the oxygen inlet provides oxygen-enriched air, resulting in a more balanced fuel-oxygen mixture and more complete combustion. In traditional air-assisted combustion, the oxygen content in the air is relatively low, and large amounts of inert gases such as nitrogen not only do not participate in the combustion process but also carry away a significant amount of heat. Oxygen-enriched combustion, however, increases the oxygen concentration, allowing the fuel to burn more completely in a shorter time, releasing more energy and further improving energy efficiency. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a first-view perspective perspective view of the present invention;

[0024] Figure 2 The explosion of this utility model;

[0025] Figure 3 This is a front view of the present invention;

[0026] Figure 4 This is a cross-sectional view of the present invention.

[0027] In the diagram: 1. Combustion chamber; 2. Side plate; 3. Oxygen port; 4. L-shaped pipe; 5. Heat storage body; 6. Funnel interface; 7. Connecting valve; 8. Connecting pipe; 9. Support; 10. Reversing valve; 11. Flue gas exhaust pipe; 12. Gas pipe; 13. Base; 14. Column; 15. Side frame. Detailed Implementation

[0028] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Please see Figure 1-4 The present invention provides the following technical solution:

[0031] A self-storing oxygen-enriched burner, comprising:

[0032] Combustion chamber 1;

[0033] Side plate 2 is connected to the left and right ends of combustion chamber 1 by bolts and threads;

[0034] L-shaped tube 4, which is fixedly connected to the left and right ends of side plate 2;

[0035] Heat storage body 5 is fixedly connected inside two L-shaped tubes 4;

[0036] The bracket 9 is fixedly connected to the lower end of the combustion chamber 1. A reversing valve 10 is connected to the bracket 9, and a connecting pipe 8 is connected between the reversing valve 10 and the L-shaped pipe 4.

[0037] In a specific embodiment of this utility model, the combustion chamber 1, as the main site of the combustion reaction, has an optimized internal design to promote thorough mixing of fuel and oxygen and efficient combustion. Side plates 2 are bolted to the left and right ends of the combustion chamber 1, serving to fix and protect the internal structure. L-shaped tubes 4 are fixedly connected to the left and right ends of the side plates 2, forming a channel for gas flow. Heat storage bodies 5 are installed inside the two L-shaped tubes 4 to absorb and release heat, improving the thermal efficiency of the burner. A bracket 9 is fixedly connected to the lower end of the combustion chamber 1, providing support for the overall structure. A reversing valve 10 is installed on the bracket 9 to control the gas flow direction, achieving efficient heat storage and release cycles. A connecting pipe 8 connects the reversing valve 10 to the L-shaped tubes 4, ensuring smooth gas flow between the components.

[0038] Please refer to the details. Figure 1-4 The lower end of the L-shaped tube 4 is fixedly connected to a funnel-shaped interface 6, and the lower end of the funnel-shaped interface 6 is fixedly connected to a connecting valve 7, which is connected to the connecting tube 8.

[0039] In this embodiment: L-shaped pipe 4 serves as the main channel for gas flow, connecting side plate 2 and funnel interface 6 to ensure smooth gas flow into and out of combustion chamber 1. It is securely fixed to the left and right ends of side plate 2 via welding or bolting to ensure structural stability. Funnel interface 6 is located at the lower end of L-shaped pipe 4, serving as the fuel or gas input interface for easy connection to an external fuel supply system. It is tightly connected to the lower end of L-shaped pipe 4 via threaded connection or welding to ensure no gas or fuel leakage. Connecting valve 7 is installed at the lower end of funnel interface 6 to control and regulate the flow rate of fuel or gas, ensuring the stability and safety of the combustion process. It is fixed to funnel interface 6 via threaded connection or flange connection for easy maintenance and replacement. Connecting pipe 8 connects connecting valve 7 to reversing valve 10, ensuring smooth fuel or gas transfer to combustion chamber 1 or regenerator 5. Sealing gaskets and bolts ensure airtightness at the connection point, preventing leakage.

[0040] Please refer to the details. Figure 1-4 A flue gas exhaust pipe 11 is fixedly connected to one side of the reversing valve 10.

[0041] In this embodiment: the reversing valve 10 is a key fluid control element in the burner, responsible for regulating and controlling the flow direction of gaseous fuel and air. By switching the airflow path at regular intervals or as needed, the heat storage body 5 alternates between heat absorption and heat release, thereby improving the thermal efficiency of the burner. Through effective airflow management, the optimal mixing ratio of fuel and oxygen in the combustion chamber 1 is ensured, promoting complete combustion and reducing incomplete combustion products. The reversing valve 10 is securely mounted on the bracket 9 with bolts or other fixing devices to ensure its stability during operation. The reversing valve 10 is connected to the L-shaped pipe 4 through the connecting pipe 8 to realize the input and output of gas. One end of the reversing valve 10 is fixedly connected to a flue gas exhaust pipe 11 through a sealed connection such as flange connection, threaded connection, or welding, for discharging the flue gas generated after combustion. The flue gas exhaust pipe 11 is responsible for exporting the high-temperature flue gas generated after combustion from the burner system, ensuring that the flue gas does not remain in the combustion chamber and maintaining the stability of the gas pressure and temperature inside the burner. The flue gas exhaust pipe 11 is securely connected to one side of the reversing valve 10 by means of a sealing gasket and bolt connection to ensure the airtightness of the connection and prevent flue gas leakage.

[0042] Please refer to the details. Figure 1-4 A gas pipe 12 is fixedly connected to the other end of the reversing valve 10.

[0043] In this embodiment, a gas pipe 12 is reliably connected to the other end of the reversing valve 10 for supplying gas as fuel. The gas pipe 12 is responsible for transporting gas from the external gas supply system to the reversing valve 10, and then into the burner to participate in the combustion reaction. It is typically equipped with a flow regulating device to adjust the gas supply according to combustion requirements, ensuring the stability and efficiency of the combustion process. The gas pipe 12 is securely connected to the other end of the reversing valve 10 via sealing gaskets, threaded connections, or welding to ensure airtightness and prevent gas leakage. Safety devices such as safety valves and pressure regulators are usually installed on the gas pipe 12 to ensure the safe operation of the system.

[0044] Please refer to the details. Figure 1-4 An oxygen port 3 is fixedly connected to the upper end of the combustion chamber 1.

[0045] In this embodiment, oxygen inlet 3 is located at the upper end of combustion chamber 1, and its main function is to supply oxygen-enriched air into the combustion chamber. Compared with conventional air, oxygen-enriched air has a higher oxygen concentration, which helps to improve combustion efficiency and flame temperature. By supplying oxygen-enriched air, the fuel and oxygen mix more thoroughly, and the combustion reaction is more complete. This not only improves thermal efficiency but also reduces emissions of incomplete combustion products such as carbon monoxide and unburned hydrocarbons, contributing to environmental protection.

[0046] Please refer to the details. Figure 1-4A base 13 is fixedly connected to the lower end of the combustion chamber 1, a column 14 is fixedly connected to the lower end of the base 13, and a side frame 15 is fixedly connected to the side end of the column 14.

[0047] In this embodiment: The base 13 is located at the bottom of the entire burner structure, directly contacting the placement surface such as the ground or mounting platform. Its main function is to provide stable support for the burner, bearing the weight of the entire burner, including the combustion chamber 1, oxygen inlet 3, reversing valve 10, and all other components, preventing the burner from shaking or tipping over during operation. The base 13 evenly distributes the weight of the burner onto the placement surface, avoiding excessive local pressure that could damage the surface. This pressure-distributing effect of the base 13 is particularly important in some industrial applications where the burner is installed on a relatively fragile ground or platform. The column 14 connects the base 13 and the side frame 15, providing vertical support for the upper structure of the burner. It bears the weight from the combustion chamber 1, oxygen inlet 3, and other upper components, transferring this weight to the base 13, and together with the base 13, maintaining the vertical stability of the burner. As a vertical connecting component in the burner structure, the column 14 connects the base 13 and the side frame 15 into a whole, enhancing the rigidity of the entire support structure. This connection method helps resist vibrations, impacts, and other external disturbances generated during combustion, ensuring the structural integrity of the burner during operation. The column 14 defines the burner's vertical position and, in conjunction with other components, determines the overall spatial layout of the burner. This is crucial for the connection and coordinated operation of the burner with other related equipment such as the fuel supply system and exhaust system. The side frame 15, located at the side end of the column 14, supports and reinforces the side structure of the entire burner. Together with the column 14 and the base 13, it forms a stable frame structure, preventing deformation or displacement of the burner in the horizontal direction. Especially when subjected to lateral forces such as those generated by gas pressure fluctuations during combustion, the side frame 15 effectively disperses these forces, enhancing the overall stability of the burner.

[0048] The working principle and usage process of this utility model are as follows: First, ensure the gas supply system is operating normally, the gas pipe 12 is connected to a reliable gas source, and the gas pressure is stable within a suitable range according to the burner design requirements. Check the oxygen supply system, connect the oxygen port 3 to a stable oxygen-enriched air source, and adjust the oxygen flow rate to a suitable initial value for combustion, determined according to the fuel type and burner specifications. Slowly open the oxygen supply valve to allow oxygen to enter the combustion chamber 1 through the oxygen port 3. The initial flow rate can be set according to the preheating stage requirements of the burner, generally 50%-70% of the normal operating flow rate. Open the valve on the gas pipe 12 to allow the gas to begin reversing. At this time, the reversing valve 10 starts working according to the preset program, guiding the gas to the L-shaped pipe 4. The gas enters the heat storage body 5 through the L-shaped pipe 4 and is preheated in the heat storage body 5. If it is the first start-up, the temperature of the heat storage body is low and the preheating effect is limited, but it will gradually rise in temperature as the combustion process progresses. When the gas and oxygen-enriched air reach a suitable mixing ratio in the combustion chamber 1, the mixture is ignited by the ignition device. After successful ignition, the flame begins to burn stably and the temperature gradually increases. During the combustion process, the reversing valve 10 switches the airflow direction according to the set time interval or temperature conditions. When the gas and air enter the combustion chamber 1 from one side to burn, the heat storage body 5 on the other side... The combustion chamber begins absorbing heat generated during combustion, achieving heat recovery. The high-temperature flue gas produced by combustion passes through connecting pipe 8 and reversing valve 10, and is then discharged through flue gas discharge pipe 11. During the discharge process, some heat can be preheated by subsequently entering cold air or coal gas. If a heat recovery device is connected to the flue gas discharge pipe, the combustion status is monitored in real time by sensors such as temperature sensors, pressure sensors, and oxygen content sensors installed on the combustion chamber 1 and its related pipes. Based on the monitoring data, the oxygen flow rate at oxygen port 3 and the coal gas flow rate at coal gas pipe 12 are adjusted to maintain a stable combustion process. For example, if the combustion temperature is detected to be too high, the coal gas flow rate can be appropriately reduced or the oxygen flow rate can be increased. Gas flow rate; conversely, if the temperature is too low, increase the gas flow rate or adjust the oxygen flow rate. At the same time, monitor the working status of the reversing valve 10 to ensure that it accurately switches the airflow direction according to the predetermined program, ensuring the normal heat storage and heat release cycle of the heat storage body 5. First, close the valve on the gas pipe 12 to stop the gas from entering the combustion chamber 1. At this time, the flame in the combustion chamber 1 will gradually extinguish. After the gas is turned off, continue to maintain the oxygen supply at the oxygen port 3 for a period of time, usually a few minutes, to ensure that the combustible gas in the combustion chamber 1 is completely burned and purged, preventing the residual combustible gas from causing safety hazards. Completely close the oxygen supply valve to stop the oxygen from entering the combustion chamber 1.

[0049] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A self-storing oxygen-enriched burner, characterized in that, include: Combustion chamber (1); Side plate (2), the side plate (2) is connected to the left and right ends of the combustion chamber (1) by bolt thread; L-shaped tube (4), which is fixedly connected to the left and right ends of the side plate (2); Heat storage body (5), which is fixedly connected inside two L-shaped tubes (4); A bracket (9) is fixedly connected to the lower end of the combustion chamber (1). A reversing valve (10) is connected to the bracket (9). A connecting pipe (8) is connected between the reversing valve (10) and the L-shaped pipe (4).

2. The self-regenerative oxygen-enriched burner according to claim 1, characterized in that: The lower end of the L-shaped tube (4) is fixedly connected to a funnel interface (6), and the lower end of the funnel interface (6) is fixedly connected to a connecting valve (7). The connecting valve (7) is connected to the connecting tube (8).

3. The self-storing oxygen-enriched burner according to claim 2, characterized in that: A flue gas discharge pipe (11) is fixedly connected to one side of the reversing valve (10).

4. A self-storing oxygen-enriched burner according to claim 3, characterized in that: A gas pipe (12) is fixedly connected to the other end of the reversing valve (10).

5. A self-regenerative oxygen-enriched burner according to claim 4, characterized in that: An oxygen port (3) is fixedly connected to the upper end of the combustion chamber (1).

6. A self-regenerative oxygen-enriched burner according to claim 5, characterized in that: The lower end of the combustion chamber (1) is fixedly connected to a base (13), the lower end of the base (13) is fixedly connected to a column (14), and the side end of the column (14) is fixedly connected to a side frame (15).

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