Blast furnace gas and natural gas dual-purpose heat accumulating type burner

Abstract

The invention belongs to the technical field of burners, and discloses a blast furnace gas and natural gas dual-purpose heat accumulating type burner which can independently use blast furnace gas and air for double preheating and can also use the natural gas after the blast furnace gas and the air for double preheating. Natural gas can be independently used without preheating through valve switching, and air is independently preheated. Comprising a burner body, an air heat storage cavity, a blast furnace gas heat storage cavity and a natural gas channel are formed in the burner body, an air heat storage body is arranged in the air heat storage cavity, and a blast furnace gas heat storage body is arranged in the blast furnace gas heat storage cavity; the end of the second side of the air heat storage cavity, the end of the second side of the blast furnace gas heat storage cavity and the end of the second side of the natural gas channel jointly communicate with a burner head mixing cavity, and the end of the second side of the burner head mixing cavity communicates with a burner head mixing nozzle. The device has the beneficial effects that the structure is compact, the mixed nozzle at the head of the burner is variable, and the natural gas can be partially or completely switched for use during the additional maintenance period of the blast furnace and when the blast furnace gas flow is insufficient.

Description

Technical Field

[0001] The invention belongs to the technical field of burners, and in particular relates to a heat storage burner for blast furnace gas and natural gas. Background Art

[0002] Traditional blast furnace gas burners usually use a simple combustion method, which causes uneven mixing of gas and air, resulting in incomplete combustion. A large amount of chemical energy is not effectively converted into thermal energy, causing energy waste.

[0003] Blast furnace gas has a low calorific value, which leads to a low combustion temperature. If it is not preheated, it cannot meet the process temperature requirements of industrial furnaces. Currently, most of the existing blast furnace gas and air double preheating burners adopt a split structure, that is, the gas heat storage chamber is a single burner, and the air heat storage chamber is also a single burner. The two are grouped to spray air and gas into the furnace to organize the flame for combustion. This structure will cause the gas to be discharged before it is completely burned due to the small volume of the furnace, resulting in energy waste.

[0004] In some special production heating processes, a dual-purpose burner for natural gas and blast furnace gas is needed to meet the fuel switching requirements. Currently, the regenerative burners only have a single natural gas regenerative burner or a blast furnace gas regenerative burner.

[0005] In the prior art, CN216521650U discloses a blast furnace gas and air combined dual heat storage low nitrogen burner, comprising a combined box body, in which a gas heat storage chamber and an air heat storage chamber extending into the combined box body are respectively embedded, and at least one gas channel penetrating the combined box body is arranged at the front end of the gas heat storage chamber; at least one air channel penetrating the combined box body is arranged at the front end of the air heat storage chamber; the gas channel and the external extension line of the air channel can form an angle.

[0006] The above-mentioned prior art has the following defects: it cannot meet the requirement of dual-use and switchability of natural gas and blast furnace gas; there is no gas mixing chamber, which may lead to incomplete gas combustion; the application range is narrow; and the combustion efficiency is low. Summary of the invention

[0007] In order to solve the above problems, the purpose of the present invention is to disclose a regenerative burner for blast furnace gas and natural gas, which is realized by adopting the following technical scheme.

[0008] A blast furnace gas and natural gas dual-purpose regenerative burner, comprising a burner body, an air regenerative chamber, a blast furnace gas regenerative chamber and a natural gas channel arranged in the burner body, a plurality of air regenerative bodies arranged in the air regenerative chamber, an end of a first side of the air regenerative chamber being connected to an air inlet; A plurality of blast furnace gas heat storage bodies are arranged in the blast furnace gas heat storage chamber, and a blast furnace gas inlet is connected to the end of the first side of the blast furnace gas heat storage chamber; A natural gas inlet is connected to the end of the first side of the natural gas passage; The ends of the second side of the air heat storage chamber, the blast furnace gas heat storage chamber and the natural gas channel are commonly connected to a burner head mixing chamber, and the end of the second side of the burner head mixing chamber is connected to a burner head mixing nozzle. The first side and the second side are two side surfaces in opposite directions. For example, when the first side is the left side, the second side is the right side.

[0009] The above-mentioned blast furnace gas and natural gas dual-purpose regenerative burner can use blast furnace gas and air for dual preheating, or use blast furnace gas and air for dual preheating and then partially use natural gas, or switch through valves to use natural gas alone without preheating and use air for single preheating.

[0010] In the above-mentioned regenerative burner for use with blast furnace gas and natural gas, the mixing nozzle at the burner head faces the second side.

[0011] In the above-mentioned regenerative burner for blast furnace gas and natural gas, the mixing nozzle at the burner head is oriented upward toward the second side.

[0012] In the above-mentioned regenerative burner for blast furnace gas and natural gas, when the mixing nozzle at the burner head faces upward toward the second side, the angle between the mixing nozzle at the burner head and the horizontal plane is 60° to 90°.

[0013] According to the process design requirements, the distribution cross-section ratio of the mixing nozzle 9 of the burner head for the dual-purpose regenerative burner for blast furnace gas and natural gas is 80% toward the second side and 20% toward the upper side of the second side.

[0014] In the above-mentioned blast furnace gas and natural gas dual-purpose regenerative burner, the blast furnace gas regenerative bodies are arranged in layers along the axial direction of the blast furnace gas regenerative chamber.

[0015] In the above-mentioned blast furnace gas and natural gas dual-purpose regenerative burner, the air regenerative bodies are arranged in layers along the axial direction of the air regenerative chamber.

[0016] The above-mentioned regenerative burner for blast furnace gas and natural gas has a mixing nozzle at the burner head which is flat oval or circular.

[0017] The above-mentioned regenerative burner for blast furnace gas and natural gas has a single or multiple mixing nozzles at the burner head.

[0018] This application has the following beneficial effects: 1. The present application integrates the air heat storage chamber, the blast furnace gas heat storage chamber and the natural gas channel into a single burner, integrating air supply, gas supply and smoke exhaust into one, thereby reducing the volume of the burner.

[0019] 2. Blast furnace gas and air can be used alone for dual preheating, or blast furnace gas and air can be preheated together and then natural gas can be used partially; by switching the valve, natural gas can be used alone without preheating, and air can be preheated alone, which has a wider range of use.

[0020] 3. When using natural gas, the air heat storage chamber and the blast furnace gas heat storage chamber supply air at the same time, meeting the natural gas usage requirements for air consumption, providing more sufficient oxygen supply, without the need to modify the equipment or add additional components, making it easy to use and low cost.

[0021] 4. The flame nozzle at the burner head can adopt different structures to organize the flame to meet the heating process requirements of different furnaces.

[0022] 5. When the burners are symmetrically installed on the furnace wall, the combustion and exhaust directions can be reversed. When the burner on one side is burning, the burner on the other side is exhausting smoke, and the heat storage efficiency is high.

[0023] 6. The burner head mixing chamber and the burner head mixing nozzle are used to allow the blast furnace gas and air to be partially premixed in the burner head mixing chamber and then ejected from the burner head mixing nozzle. During combustion, the fuel and air can be more fully contacted, creating good conditions for the combustion reaction. Compared with simple diffusion combustion, it can make more full use of air and make the combustion more complete, thereby improving the combustion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of an embodiment of the present invention.

[0025] Figure 2 2 is a top view of an embodiment of the present invention.

[0026] Figure 3 It is a left side view of an embodiment of the present invention.

[0027] Figure 4 AA is a cross-sectional view of an embodiment of the present invention.

[0028] Figure 5 It is a structural schematic diagram of an embodiment of the present invention after being used in a furnace.

[0029] Figure 6 It is another structural schematic diagram of an embodiment of the present invention after being used in a furnace.

[0030] Figure 7 It is another structural schematic diagram of an embodiment of the present invention after being used in a furnace.

[0031] Figure 8It is a schematic diagram of the first structure of the mixed gas nozzle of an embodiment of the present invention.

[0032] Fig. 9 1 is a schematic diagram of a second structure of the mixed gas nozzle according to an embodiment of the present invention.

[0033] Fig.10 Schematic diagram of the third structure of the mixed gas nozzle of the embodiment of the present invention.

[0034] Fig.11 This is a schematic diagram of valve operation when an embodiment of the present invention is used in a furnace and burns blast furnace gas, with combustion on the first side and smoke exhaust on the second side.

[0035] Fig.12 This is a schematic diagram of valve operation when an embodiment of the present invention is used in a furnace and burns natural gas, with combustion on the first side and smoke exhaust on the second side.

[0036] Fig.13 This is a schematic diagram of the valve action when an embodiment of the present invention is used in a furnace and burns blast furnace gas, with combustion on the second side and smoke exhaust on the first side.

[0037] Fig.14 This is a schematic diagram of the valve action when an embodiment of the present invention is used in a furnace and burns natural gas, with combustion on the second side and smoke exhaust on the first side.

[0038] In the figure, the names of the figures corresponding to the figure numbers are: 1. air inlet, 2. burner body, 3. air heat storage chamber, 4. air heat storage body, 5. burner head mixing chamber, 6. blast furnace gas inlet, 7. blast furnace gas heat storage chamber, 8. blast furnace gas heat storage body, 9. burner head mixing nozzle, 10. natural gas inlet, 11. natural gas channel, 12. material, 13. first valve, 14. second valve, 15. third valve, 16. fourth valve, 17. fifth valve, 18. sixth valve, 19. seventh valve, 20. eighth valve. DETAILED DESCRIPTION

[0039] Example: Figures 1 to 4 A blast furnace gas and natural gas dual-purpose regenerative burner, comprising a burner body 2, an air regenerative chamber 3, a blast furnace gas regenerative chamber 7 and a natural gas channel 11 are arranged in the burner body 2, a plurality of air regenerative bodies 4 are arranged in the air regenerative chamber 3 along the axial direction of the air regenerative chamber 3, and an air inlet 1 is connected to the end of the first side of the air regenerative chamber 3; A plurality of blast furnace gas heat storage bodies 8 are arranged in layers along the axial direction of the blast furnace gas heat storage chamber 7 in the blast furnace gas heat storage chamber 7, and a blast furnace gas inlet 6 is connected to the end of the first side of the blast furnace gas heat storage chamber 7; A natural gas inlet 10 is connected to the end of the first side of the natural gas channel 11; The ends of the second sides of the air heat storage chamber 3, the blast furnace gas heat storage chamber 7 and the natural gas channel 11 are commonly connected to a burner head mixing chamber 5, and a burner head mixing nozzle 9 is provided at the end of the second side of the burner head mixing chamber 5. The air inlet 1, the air heat storage chamber 3, the burner head mixing chamber 5 and the burner head mixing nozzle 9 are sequentially connected, the blast furnace gas inlet 6, the blast furnace gas heat storage chamber 7, the burner head mixing chamber 5 and the burner head mixing nozzle 9 are sequentially connected, the natural gas inlet 10, the natural gas channel 11, the burner head mixing chamber 5 and the burner head mixing nozzle 9 are sequentially connected, and the first side and the second side are two sides in opposite directions. For example, when the first side is the left side, the second side is the right side.

[0040] Furthermore, the above-mentioned blast furnace gas and natural gas dual-purpose regenerative burner can also be designed according to process design requirements so that the distribution cross-sectional ratio of the mixing nozzle 9 at the burner head is: 80% toward the second side and 20% toward the upper side of the second side.

[0041] Since the combustible gas and air have reached a fully uniform mixing state before combustion, the combustible molecules and air can fully contact each other, and chemical reactions can occur rapidly during combustion, which greatly increases the combustion speed and releases a large amount of heat in a short period of time.

[0042] like Figure 8 , Fig. 9 and Fig.10 The mixing nozzle 9 at the burner head can be customized into a flat ellipse, or a circle, or a single nozzle or multiple nozzles according to the actual process requirements, so as to organize the flame into a form that meets the process requirements; in some production heating processes, a large heating area is required, and the nozzle is customized into a flat ellipse; in some production heating processes, concentrated temperature is required, and the nozzle is customized into a circle, and can also be customized into a single nozzle or multiple nozzles according to the heating process requirements.

[0043] like Figure 5 When the burner of the present application is installed on the furnace wall 15, a furnace structure is as follows: the first side and the second side of the furnace wall 15 are symmetrically provided with the same number of burners, the burners on the first side and the second side are located below the material 12, the mixing nozzle 9 at the burner head extends into the furnace, and the mixing nozzle 9 at the burner head is directed obliquely upward, and the angle between the mixing nozzle 9 at the burner head and the horizontal plane is 60° to 90°.

[0044] like Figure 6 When the burner of the present application is installed on the furnace wall 15, another furnace structure is: the same number of burners are arranged on the first side and the second side of the furnace wall 15, the burner on the first side is located below the material 12, and the burner on the second side is located above the material 12, the end face of the burner head is flush with the inner surface of the furnace wall 15, and the burner head mixing nozzle 9 of the burner on the first side is directed toward the second side, and the burner head mixing nozzle 9 of the burner nozzle on the second side is directed toward the first side.

[0045] like Figure 7 , and refer to Figure 5 When the burner of the present application is installed on the furnace wall 15, another furnace structure is: according to the process design requirements, the distribution cross-sectional ratio of the burner head mixing nozzle 9 is: 80% of the burner head mixing nozzle 9 of the burner on the first side is toward the second side, and 20% is toward the second side; 80% of the burner head mixing nozzle 9 of the burner on the second side is toward the first side, and 20% is toward the first side.

[0046] like Figures 10 to 13 , the blast furnace gas inlet 6 of all the burners on the first side is connected to a first pipeline, a third valve 15 is provided on the first pipeline, the air inlet 1 of all the burners on the first side is connected to a second pipeline, a first valve 13 is provided on the second pipeline, a third pipeline is provided between the first pipeline and the second pipeline, the third pipeline is located on the second side of the first valve 13 and the third valve 15, one end of the third pipeline is connected to the first pipeline, the other end of the third pipeline is connected to the second pipeline, a fourth valve 16 is provided on the third pipeline, the natural gas inlet 10 of the burners on the first side is connected to a seventh pipeline, a second valve 14 is provided on the seventh pipeline; The blast furnace gas inlet 6 of all the burners on the second side is connected to a fourth pipeline, on which a fifth valve 17 is provided, the air inlet 1 of all the burners on the second side is connected to a fifth pipeline, on which a seventh valve 19 is provided, a sixth pipeline is provided between the fourth pipeline and the fifth pipeline, the sixth pipeline is located on the first side of the fifth valve 17 and the seventh valve 19, one end of the sixth pipeline is connected to the fourth pipeline, the other end of the sixth pipeline is connected to the fifth pipeline, on which a sixth valve 18 is provided, the natural gas inlet 10 of the burners on the second side is connected to an eighth pipeline, on which an eighth valve 20 is provided; like Fig.11 When burning blast furnace gas, the burner on the first side burns and the burner on the second side exhausts smoke. At this time, the first valve 13, the third valve 15, the fifth valve 17 and the seventh valve 19 are in the open state, and the second valve 14, the fourth valve 16, the sixth valve 18 and the eighth valve 20 are in the closed state; Blast furnace gas enters the blast furnace gas inlet 6 of the burner on the first side from the first pipeline, flows through the blast furnace gas regenerator 8 in the blast furnace gas regenerator chamber 7 of the burner on the first side, air enters the air inlet 1 from the second pipeline, flows through the air regenerator 4 in the air regenerator chamber 3 of the burner on the first side, and the blast furnace gas and air simultaneously enter the burner head mixing chamber 5 of the burner on the first side, and after being completely mixed, they are ejected from the burner head mixing nozzle 9 of the burner on the first side and burn, forming a completely mixed combustion; The flue gas enters from the mixing nozzle 9 at the burner head of the burner on the second side, flows through the blast furnace gas regenerator 8 in the blast furnace gas regenerator chamber 7 of the burner on the second side, passes through the blast furnace gas inlet 6 of the burner on the second side and is discharged from the fourth pipe, and flows through the air regenerator 4 in the air regenerator chamber 3 of the burner on the second side, passes through the air inlet 1 of the burner on the second side and is discharged from the fifth pipe. The temperature of the flue gas after passing through the air regenerator 4 and the blast furnace gas regenerator 8 is reduced to 100-150°C.

[0047] like Fig.13 , after a predetermined time, the direction is reversed, the burner on the second side burns, and the burner on the first side exhausts smoke. At this time, the first valve 13, the third valve 15, the fifth valve 17 and the seventh valve 19 are in the open state, and the second valve 14, the fourth valve 16, the sixth valve 18 and the eighth valve 20 are in the closed state; The blast furnace gas enters the blast furnace gas inlet 6 from the fourth pipeline on the second side, flows through the blast furnace gas heat storage body 8 in the blast furnace gas heat storage chamber 7, and the air enters the air inlet 1 from the fifth pipeline on the second side, flows through the air heat storage body 4 in the air heat storage chamber 3 of the burner on the second side, and the blast furnace gas and air enter the burner head mixing chamber 5 at the same time, and after being completely mixed, they are ejected from the burner head mixing nozzle 9 and burned, forming a completely mixed combustion; The flue gas enters from the mixing nozzle 9 at the burner head of the burner on the first side, flows through the blast furnace gas regenerator 8 in the blast furnace gas regenerator chamber 7 of the burner on the first side, passes through the blast furnace gas inlet 6 of the burner on the first side and is discharged from the first pipe, and flows through the air regenerator 4 in the air regenerator chamber 3 of the burner on the first side, passes through the air inlet 1 of the burner on the first side and is discharged from the second pipe. The flue gas temperature after passing through the air regenerator 4 and the blast furnace gas regenerator 8 is reduced to 100-150°C.

[0048] This reciprocating switching realizes heat storage combustion.

[0049] like Fig.12 When natural gas is burned, the burner on the first side burns and the burner on the second side exhausts smoke. At this time, the first valve 13, the second valve 14, the fourth valve 16, the fifth valve 17 and the seventh valve 19 are in the open state, and the third valve 15, the sixth valve 18 and the eighth valve 20 are in the closed state; Since a large amount of air is required for natural gas combustion, the required air enters through the second pipeline and is divided into two paths. One path enters from the air inlet 1 of the burner on the first side, flows through the air heat storage body 4 in the air heat storage chamber 3 of the burner on the first side, and then enters the burner head mixing chamber 5 of the burner on the first side. The other path flows through the third pipeline and the first pipeline, enters from the blast furnace gas inlet 6 of the burner on the first side, flows through the blast furnace gas heat storage body 8 in the blast furnace gas heat storage chamber 7 of the burner on the first side, and then enters the burner head mixing chamber 5 of the burner on the first side. Natural gas enters the burner head mixing chamber 5 of the burner on the first side from the seventh pipeline. After the natural gas and air are completely mixed in the burner head mixing chamber 5 of the burner on the first side, they are ejected from the burner head mixing nozzle 9 of the burner on the first side and burn, forming a completely mixed combustion.

[0050] The flue gas enters from the mixing nozzle 9 at the burner head of the burner on the second side, flows through the blast furnace gas regenerator 8 in the blast furnace gas regenerator chamber 7 of the burner on the second side, passes through the blast furnace gas inlet 6 of the burner on the second side and is discharged from the fourth pipe, and flows through the air regenerator 4 in the air regenerator chamber 3 of the burner on the second side, passes through the air inlet 1 of the burner on the second side and is discharged from the fifth pipe. The temperature of the flue gas after passing through the air regenerator 4 and the blast furnace gas regenerator 8 is reduced to 100-150°C.

[0051] like Fig.14 , after a predetermined time, the direction is reversed, the burner on the second side burns, and the burner on the first side exhausts smoke. At this time, the first valve 13, the third valve 15, the sixth valve 18, the seventh valve 19 and the eighth valve 20 are in the open state, and the second valve 14, the fourth valve 16 and the fifth valve 17 are in the closed state; The required air enters through the fifth pipeline and is divided into two paths. One path enters from the air inlet 1 of the burner on the second side, flows through the air heat storage body 4 in the air heat storage chamber 3 of the burner on the second side, and then enters the burner head mixing chamber 5 of the burner on the second side. The other path flows through the sixth pipeline and the fourth pipeline, enters from the blast furnace gas inlet 6 of the burner on the second side, flows through the blast furnace gas heat storage body 8 in the blast furnace gas heat storage chamber 7 of the burner on the second side, and then enters the burner head mixing chamber 5. Natural gas enters the burner head mixing chamber 5 of the burner on the second side from the eighth pipeline. After the natural gas and air are completely mixed in the burner head mixing chamber 5 of the burner on the second side, they are ejected from the burner head mixing nozzle 9 of the burner on the second side and burn, forming a completely mixed combustion.

[0052] The flue gas enters from the mixing nozzle 9 at the burner head of the burner on the first side, flows through the blast furnace gas regenerator 8 in the blast furnace gas regenerator chamber 7 of the burner on the first side, passes through the blast furnace gas inlet 6 of the burner on the first side and is discharged from the first pipe, and flows through the air regenerator 4 in the air regenerator chamber 3 of the burner on the first side, passes through the air inlet 1 of the burner on the first side and is discharged from the second pipe. The temperature of the flue gas after passing through the air regenerator 4 and the blast furnace gas regenerator 8 is reduced to 100-150°C.

[0053] This reciprocating switching realizes heat storage combustion.

[0054] This application has the following beneficial effects: 1. The present application integrates the air heat storage chamber, the blast furnace gas heat storage chamber and the natural gas channel 11 into a single burner, integrating air supply, gas supply and smoke exhaust into one, thereby reducing the volume of the burner.

[0055] 2. Blast furnace gas and air can be used alone for dual preheating, or blast furnace gas and air can be preheated together and then natural gas can be used partially; by switching the valve, natural gas can be used alone without preheating, and air can be preheated alone, which has a wider range of use.

[0056] 3. When using natural gas, the air heat storage chamber and the blast furnace gas heat storage chamber supply air at the same time, meeting the natural gas usage requirements for air consumption, providing more sufficient oxygen supply, without the need to modify the equipment or add additional components, making it easy to use and low cost.

[0057] 4. The flame nozzle at the burner head can adopt different structures to organize the flame to meet the heating process requirements of different furnaces.

[0058] 5. After the burner is installed on the furnace wall 15, the combustion and smoke exhaust can be switched. When the burner on one side is burning, the burner on the other side is exhausting smoke, and the heat storage efficiency is high.

[0059] 6. The burner head mixing chamber and the burner head mixing nozzle are used to allow the blast furnace gas and air to be partially premixed in the burner head mixing chamber and then ejected from the burner head mixing nozzle. During combustion, the fuel and air can be more fully contacted, creating good conditions for the combustion reaction. Compared with simple diffusion combustion, it can make more full use of air and make the combustion more complete, thereby improving the combustion efficiency.

[0060] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A regenerative burner for blast furnace gas and natural gas, comprising a burner body (2), characterized in that: An air heat storage chamber (3), a blast furnace gas heat storage chamber (7) and a natural gas channel (11) are provided in the burner body (2); a plurality of air heat storage bodies (4) are provided in the air heat storage chamber (3); and an end portion of a first side of the air heat storage chamber (3) is connected to an air inlet (1); A plurality of blast furnace gas heat storage bodies (8) are arranged in the blast furnace gas heat storage chamber (7), and a blast furnace gas inlet (6) is connected to the end of the first side of the blast furnace gas heat storage chamber (7); The end of the first side of the natural gas channel (11) is connected to a natural gas inlet (10); The ends of the second sides of the air heat storage chamber (3), the blast furnace gas heat storage chamber (7) and the natural gas channel (11) are commonly connected to a burner head mixing chamber (5), and the end of the second side of the burner head mixing chamber (5) is connected to one or more burner head mixing nozzles (9), and the first side and the second side are two side surfaces in opposite directions.

2. The regenerative burner for blast furnace gas and natural gas according to claim 1, characterized in that: It can use blast furnace gas and air for dual preheating, or use blast furnace gas and air for dual preheating and then partially use natural gas, or switch through valves to use natural gas alone without preheating and use air for single preheating.

3. The regenerative burner for blast furnace gas and natural gas according to claim 2, characterized in that: The blast furnace gas heat storage bodies (8) are arranged in layers along the axial direction of the blast furnace gas heat storage chamber (7).

4. The regenerative burner for blast furnace gas and natural gas according to claim 3, characterized in that: The air heat storage bodies (4) are arranged in layers along the axial direction of the air heat storage chamber (3).

5. The regenerative burner for blast furnace gas and natural gas according to claim 4, characterized in that: The mixing nozzle (9) at the burner head is in a flat elliptical or circular shape.

6. A regenerative burner for blast furnace gas and natural gas according to claim 5, characterized in that: The mixing nozzle (9) at the burner head is a single nozzle or multiple nozzles.

7. The regenerative burner for blast furnace gas and natural gas according to claim 6, characterized in that: The mixing nozzle (9) of the burner head faces the second side.

8. The regenerative burner for blast furnace gas and natural gas according to claim 6, characterized in that: The mixing nozzle (9) at the burner head is biased upward toward the second side.

9. The regenerative burner for blast furnace gas and natural gas according to claim 8, characterized in that: When the mixing nozzle (9) at the burner head is tilted upward toward the second side, the angle between the mixing nozzle (9) at the burner head and the horizontal plane is 60° to 90°.

10. The regenerative burner for blast furnace gas and natural gas according to claim 6, characterized in that: The direction of the mixing nozzle (9) at the burner head can be partly directed toward the second side and the other part directed upwards from the second side according to the proportion of the distribution cross section.

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