A single regenerative burner

Abstract

This invention belongs to the field of metallurgical technology and provides a single regenerative burner, comprising: a burner brick with a cavity forming an air collection chamber for collecting high-temperature air after heat absorption; a supporting column disposed within the air collection chamber to support the refractory material of the burner brick and divide the air collection chamber in two; multiple air nozzles arranged side-by-side on the burner brick; multiple gas nozzles arranged side-by-side on the burner brick and corresponding one-to-one with the air nozzles; and multiple gas nozzles connected to the gas nozzles. This application solves the problems of easy refractory material detachment, burner burnout due to flameout, poor air-gas mixing, low combustion efficiency, and high energy consumption in existing single regenerative burners. It effectively avoids burnout, extends burner life, reduces excess air coefficient, reduces oxidation loss, increases the contact area between air and gas, improves flame rigidity, increases combustion efficiency, and reduces energy consumption.

Description

Technical Field

[0001] This invention relates to the field of metallurgical technology, and in particular to a single regenerative burner. Background Technology

[0002] A regenerative burner is a combustion device that uses regenerative waste heat recovery technology to preheat high-temperature air and gas. In existing technology, the burner body and burner brick of a single regenerative burner are connected by a square flange, and the sealing material is thermal insulation fiber. After long-term use, the fiber powders and is lost, leaving gaps. This causes the flame to escape from the gaps, burning the burner's steel shell and other equipment. Furthermore, the gas collecting chamber of the regenerative burner lacks refractory material support columns in the middle, and the top heat-resistant steel gas nozzle lacks anchoring nails. The refractory castable is very easy to fall off, causing air and gas to burn in the gas collecting chamber, leading to burnout of the burner.

[0003] The existing gas collection pipe of the single regenerative burner uses a rectangular tube welded from steel plate. When the burner is ignited, the flame heats the rectangular tube, and the weld at the right angle of the rectangular tube is prone to cracking due to thermal stress concentration, which leads to gas leakage and poses a serious safety hazard. In addition, the distance between the air and gas nozzles of the single regenerative burner is too large. The distance between the first row of air nozzles and the gas nozzle is about 225mm, and the distance between the second row of air nozzles and the gas nozzle is about 425mm. Moreover, the second row of air nozzles sprays horizontally without tilting towards the gas nozzle, resulting in poor air-gas mixing, slow combustion speed, large excess air coefficient, large steel billet oxidation loss, high nitrogen oxide concentration, high gas consumption per unit, and low flame rigidity. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a single regenerative burner to solve the problems of easy refractory material detachment, burner burning due to flameout, poor air-gas mixing, low combustion efficiency, and high energy consumption in the prior art.

[0005] To achieve the above and other related objectives, the present invention provides a single regenerative burner, characterized in that it comprises:

[0006] Burner brick, wherein the burner brick has a cavity, the cavity forming an air collection chamber for collecting high-temperature air after absorbing heat;

[0007] A support column is installed in the air collection chamber to support the burner brick refractory material, and the support column divides the air collection chamber into two parts.

[0008] Multiple air nozzles are arranged side by side on the burner brick;

[0009] Multiple gas nozzles are arranged side by side on the burner brick and correspond one-to-one with the air nozzles;

[0010] Multiple gas nozzles are connected to the gas nozzles.

[0011] Optionally, there is a gap between the gas nozzles, a gap between the air nozzles, and a gap between corresponding air nozzles and gas nozzles.

[0012] Optionally, the corresponding air nozzles and gas nozzles have an intersection angle, and the intersection angles between each group of air nozzles and gas nozzles may be the same or different.

[0013] Optionally, the burner brick is cast from burner brick refractory material.

[0014] Optionally, anchoring nails and anchoring hooks for fixing the refractory material of the burner brick are welded around its perimeter.

[0015] Optionally, the burner is further provided with a heat storage chamber, and the burner brick and the heat storage chamber are integrally formed.

[0016] Optionally, it also includes a main gas pipe for introducing gas, the main gas pipe being located at the bottom of the heat storage chamber, and all the gas nozzles being connected to the main gas pipe.

[0017] Optionally, both ends of the gas main pipe are closed ends, and the gas main pipe is provided with a gas main pipe flange for connecting to the gas pipeline.

[0018] Optionally, the burner has an air inlet at its top for introducing air.

[0019] As described above, the single regenerative burner of the present invention has at least the following beneficial effects:

[0020] By reinforcing the burner brick structure with supporting columns, the refractory material of the burner brick is less likely to fall off, and air and gas will not burn in the air collection chamber, effectively preventing burner damage and extending burner life. The air nozzle and gas nozzle are set side by side and correspond one-to-one, reducing the excess air coefficient, reducing oxidation loss, increasing the contact area between air and gas, improving flame rigidity, improving combustion efficiency, and reducing energy consumption, achieving low consumption and high efficiency.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of a single regenerative burner according to this application.

[0024] Figure 2 yes Figure 1 Partial cross-sectional view of a single regenerative burner from AA.

[0025] Figure 3 yes Figure 2 Partial cross-sectional view of the single regenerative burner of the BB.

[0026] In the diagram: 1-Air inlet; 2-Burner brick; 3-Gas main flange; 4-Gas main pipe; 5-Gas nozzle; 6-Gas nozzle; 7-Air nozzle; 8-Support column; 9-Regenerator chamber; 10-Burner brick refractory material; 11-Anchor nail; 12-Air collection chamber; 13-Anchor hook. Detailed Implementation

[0027] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0028] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show components relevant to the present invention and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the present invention, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0029] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0030] In one exemplary embodiment, this application provides an exemplary single regenerative burner; please refer to [link to relevant documentation]. Figures 1 to 3 A single regenerative burner includes:

[0031] Burner brick 2, the burner brick 2 has a cavity inside, the cavity forms an air collection chamber 12 for collecting high-temperature air after absorbing heat;

[0032] The support column 8 is installed in the air collection chamber 12 to support the burner brick refractory material 10. The support column 8 divides the air collection chamber 12 into two parts.

[0033] Multiple air nozzles 7 are arranged side by side on the burner brick 2;

[0034] Multiple gas nozzles 6 are arranged side by side on the burner brick 2 and correspond one-to-one with the air nozzles 7;

[0035] Multiple gas nozzles 5 are connected to gas nozzles 6.

[0036] By reinforcing the structure of the burner brick 2 with the support column 8, the refractory material 10 of the burner brick is less likely to fall off, and air and gas will not burn in the air collection chamber 12, effectively preventing burner damage, extending burner life, and eliminating the safety hazard of gas leakage. The air nozzle 7 and gas nozzle 6 are set side by side and correspond one-to-one, reducing the excess air coefficient, reducing oxidation loss, increasing the contact area between air and gas, improving flame rigidity, improving combustion efficiency, and reducing energy consumption, thus achieving low consumption and high efficiency.

[0037] In some embodiments, the gas nozzles 6 are spaced apart and the intervals are equal, the air nozzles 7 are spaced apart and the intervals are equal. The intervals between corresponding air nozzles 7 and gas nozzles 6 are sometimes equal and sometimes unequal. The interval between the air nozzles 7 and gas nozzles 6 in the middle position is smaller, and the interval between the air nozzles 7 and gas nozzles 6 on both sides is larger. The corresponding air nozzles 7 and gas nozzles 6 have an intersection angle. The corresponding air nozzles 7 and gas nozzles 6 are arranged in pairs to form groups. The intersection angles of each group of air nozzles 7 and gas nozzles 6 are sometimes the same and sometimes different. By mixing the intersection angles between the air nozzles 7 and gas nozzles 6, different flame lengths are formed to uniformly heat the steel billet and reduce the oxidation loss of the steel billet.

[0038] It should be noted that in the existing single regenerative burner structure, the air nozzles 7 are arranged in two rows, and the distance between the gas nozzles 6 and the air nozzles 7 is too large. Furthermore, the second row of air nozzles 7 is horizontal, resulting in poor air-gas mixing, slow combustion speed, a large excess air coefficient, significant billet oxidation loss, high nitrogen oxide concentration, high gas consumption per unit area, and low flame rigidity. By redesigning the existing structure, the air nozzles 7 are arranged in a single row, corresponding one-to-one with the gas nozzles 6. This reduces the excess air coefficient and billet oxidation loss. Increasing the number of air nozzles 7 and gas nozzles 6 while decreasing their diameter increases the contact area between air and gas, improving mixing and flame rigidity. The increased intersection angle between the air nozzles 7 and gas nozzles 6 further enhances air-gas mixing, thereby increasing combustion speed, reducing nitrogen oxide concentration, and lowering gas consumption per unit area.

[0039] In some embodiments, the burner brick 2 is integrally cast from the burner brick refractory material 10. Anchor nails 11 and anchor hooks 13 for fixing the burner brick refractory material 10 are welded around the main steel structure of the burner. The anchor nails 11 are welded to the outer surface of the burner gas nozzle 5. The structural stability is enhanced by the support column 8 and the anchor nails 11 to prevent the burner brick refractory material 10 from falling off. In order to prevent air and gas leakage from burning in the air collection chamber 12 and damaging the burner, the burner brick refractory material 10 is tightly fixed to the steel shell of the heat storage chamber 9 in four directions (up, down, left, and right) by the anchor hooks 13, so that it will not separate from the heat storage chamber 9 and form an integral structure.

[0040] In some embodiments, the single regenerative burner also includes a gas main pipe 4 for introducing gas. The gas main pipe 4 is located at the bottom of the regenerative chamber 9, and all gas nozzles 5 are connected to the gas main pipe 4. The gas main pipe 4 is a seamless steel pipe, which effectively avoids cracking of the gas main pipe 4 due to thermal stress concentration and eliminates the safety hazards caused by gas leakage from the gas main pipe 4.

[0041] It should be noted that the existing gas main pipe 4 is a rectangular pipe welded from steel plates. When the burner is ignited, the flame heats the rectangular pipe, and the weld at the right angle of the rectangular pipe is prone to cracking due to heat stress concentration, which can lead to gas leakage and pose a safety hazard.

[0042] In some embodiments, both ends of the gas main pipe 4 are closed ends, and the gas main pipe 4 is provided with a gas main pipe flange 3 for connecting to the gas pipeline. The gas main pipe 4 is connected to the gas pipeline through the gas main pipe flange 3 so as to introduce gas.

[0043] In some embodiments, the burner brick 2 and the heat storage chamber 9 are integrally formed. This integral forming structure prevents sparking at the contact surface between the burner brick 2 and the heat storage chamber 9, effectively protecting the burner steel shell and other equipment.

[0044] In summary, the specific usage and function of this embodiment are as follows:

[0045] First, the gas main pipe 4 is connected to the gas pipeline via the gas main pipe flange 3. Gas enters through the gas main pipe 4, passes through the gas nozzle 5 and the gas nozzle 6, and then enters the furnace. Air enters the regenerator chamber 9 through the air inlet 1, then enters the air collection chamber 12, then enters the air nozzle 7, and finally enters the furnace through the air nozzle 7, where it meets and burns with the gas. The structure of the burner brick 2 is reinforced by the support column 8 and the anchor nail 11, making it difficult for the refractory material 10 of the burner brick to fall off. Air and gas will not burn in the air collection chamber 12, effectively preventing burner damage and extending burner life. The air nozzle 7 and the gas nozzle 6 are arranged side by side and correspond one-to-one, reducing the excess air coefficient, reducing oxidation loss, increasing the contact area between air and gas, improving flame rigidity, improving combustion efficiency, and reducing energy consumption, achieving low consumption and high efficiency.

[0046] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A single regenerative burner, characterized by, include: Burner brick, wherein the burner brick has a cavity, the cavity forming an air collection chamber for collecting high-temperature air after absorbing heat; A support column is installed in the air collection chamber to support the burner brick refractory material, and the support column divides the air collection chamber into two parts. Multiple air nozzles are arranged side by side on the burner brick; Multiple gas nozzles are arranged side by side on the burner brick and correspond one-to-one with the air nozzles; Multiple gas nozzles, wherein the gas nozzles are connected to the gas outlets; The burner brick is welded with anchor nails and anchor hooks around its perimeter to secure the refractory material of the burner brick. The burner is also provided with a heat storage chamber, and the burner brick and the heat storage chamber are integrally formed. The burner brick refractory material is firmly fixed to the regenerator steel shell in four directions: up, down, left, and right using anchoring hooks.

2. A single regenerative burner as claimed in claim 1, characterized in that: There are gaps between the gas nozzles, there are gaps between the air nozzles, and there are gaps between corresponding air nozzles and gas nozzles.

3. A single regenerative burner according to claim 2, characterized in that: The corresponding air nozzles and gas nozzles have an intersection angle, and the intersection angles between each group of air nozzles and gas nozzles are sometimes the same and sometimes different.

4. A single regenerative burner according to claim 1, characterized in that: The burner brick is formed by casting burner brick refractory material.

5. A single regenerative burner according to claim 1, characterized in that: It also includes a main gas pipe for introducing gas, which is located at the bottom of the heat storage chamber, and all gas nozzles are connected to the main gas pipe.

6. A single regenerative burner according to claim 5, characterized in that: Both ends of the gas main pipe are closed, and the gas main pipe is provided with a gas main pipe flange for connecting to the gas pipeline.

7. A single regenerative burner according to claim 1, characterized in that: The burner has an air inlet at its top for allowing air to enter.

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