A pure oxygen combustor

Abstract

The utility model discloses an oxygen combustion burner in the field of oxygen combustion gun, including water inlet pipeline, the tail of water inlet pipeline is equipped with water inlet joint, oxygen pipeline, oxygen pipeline is equipped outside water inlet pipeline, and the tail of oxygen pipeline is equipped with oxygen joint, gas pipeline, gas pipeline is equipped outside oxygen pipeline, and the tail of gas pipeline is equipped with gas joint, water outlet pipeline, water outlet pipeline is equipped outside gas pipeline, and the tail of water outlet pipeline is equipped with water outlet joint, and water outlet pipeline and water inlet pipeline are communicated, combustion head, and gas pipeline, oxygen pipeline all and combustion head are communicated, the utility model discloses beneficial effect is: through setting up cooling water pipeline can cool the combustion burner, prevent high temperature, promote the service life of combustion burner, and the inclination angle setting of oxygen spout pipe and gas spout pipe makes flame projection angle more concentrated, stable.

Description

Technical Field

[0001] This utility model relates to the field of oxygen combustion lance technology, specifically to a pure oxygen burner. Background Technology

[0002] With decades of rapid economic development in China, the stock of scrap steel has reached a massive scale. Utilizing scrap steel as a smelting resource in the metallurgical industry would significantly reduce energy consumption in steelmaking processes. However, due to the different stages of development of my country's metallurgical industry compared to developed Western countries, the vast majority of domestic steel enterprises still use iron ore for steelmaking. This process cannot directly use scrap steel as a smelting material and requires preheating. The pure oxygen burner in the scrap steel heating system is the core equipment in the scrap steel preheating process, directly determining the overall performance and quality of the steelmaking process using scrap steel.

[0003] Typical pure oxygen burners use a sleeve type, where oxygen is introduced into the inner tube and fuel gas, such as blast furnace, converter, or coke oven gas, is introduced into the outer ring tube. This combustion organization is the simplest and most crude combustion technology. The flame is extremely unstable, the combustion temperature is too high, and the temperature distribution throughout the furnace is extremely uneven, resulting in severe oxidation of scrap steel during preheating and causing great waste.

[0004] Therefore, we propose a pure oxygen burner. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a pure oxygen burner.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows: A pure oxygen burner includes a water inlet pipe with a water inlet connector at its tail and an open head; an oxygen pipe sleeved over the water inlet pipe with both ends sealed and an oxygen connector at its tail; a gas pipe sleeved over the oxygen pipe with both ends sealed and a gas connector at its tail; a water outlet pipe sleeved over the gas pipe with both ends sealed and an outlet connector at its tail, and the water outlet pipe is connected to the water inlet pipe; and a burner head, with both the gas pipe and the oxygen pipe connected to the burner head.

[0007] By setting up inlet and outlet water pipes, with the inlet pipe located at the very center and the outlet pipe at the outermost periphery, cooling water enters from the central inlet pipe, cools the burner head, and then exits from the outer outlet pipe, resulting in better cooling. Furthermore, by setting up the burner head, both the gas from the gas pipeline and the oxygen from the oxygen pipeline are sprayed out from the burner head and mixed, making the flame more controllable and stable.

[0008] Further specified, the water inlet connector is located on the end face of the water inlet pipe and is equipped with a bend; the oxygen connector is located on the circumferential surface of the oxygen pipe; the gas connector is located on the circumferential surface of the gas pipe; the water outlet connector is located on the circumferential surface of the water outlet pipe; the water inlet connector, oxygen connector, gas connector and water outlet connector are staggered in the circumferential direction; setting the water inlet connector, oxygen connector, gas connector and water outlet connector on the circumferential surface of each pipe facilitates the connection of the pre-pipeline.

[0009] Furthermore, the inlet, oxygen, gas, and outlet water connectors are all equipped with connecting flanges; the connection of the pre-cooled water, oxygen, and gas pipelines via the connecting flanges provides better sealing and is more secure.

[0010] Further, the head end face of the water inlet pipe is open, and the head end faces of the water inlet pipe, oxygen pipe, and gas pipe are all provided with gaps between the head end face of the water outlet pipe and the head end face of the water outlet pipe to allow cooling water to pass through. By providing gaps between the head end faces of the water inlet pipe, oxygen pipe, and gas pipe and the head end face of the water outlet pipe to allow cooling water to pass through, the water inlet pipe and the water outlet pipe are connected through the gaps, making the structure simpler and easier to manufacture.

[0011] Further defining the combustion head, it includes an oxygen injection pipe and a gas injection pipe. The oxygen injection pipe is connected to the head end face of the oxygen pipeline and extends out of the head end face of the water pipeline. The gas injection pipe is connected to the head end face of the gas pipeline and extends out of the head end face of the water pipeline. By setting up the oxygen injection pipe and the gas injection pipe, the injection pressure of oxygen and gas can be increased, the gas can be more concentrated, and the flame can be more stable and controllable.

[0012] Further, both the oxygen and gas injection pipes are inclined outwards, with the oxygen injection pipe forming an angle of 15° with the vertical direction and the gas injection pipe forming an angle of 8° with the vertical direction. The oxygen injection pipe, located on the inner side, is inclined outwards at a greater angle than the gas injection pipe, which causes the injected oxygen and gas to mix at the nozzle, resulting in a more concentrated flame injection angle.

[0013] The beneficial effects of this utility model are as follows: by setting up a cooling water pipeline, the burner can be cooled to prevent high temperature and extend the service life of the burner. In addition, the tilt angle of the oxygen injection pipe and the gas injection pipe makes the flame injection angle more concentrated and stable. Attached Figure Description

[0014] Figure 1 This is a front view of the present invention; Figure 2 This is a cross-sectional view of the burner head; Figure 3 This is the left view of the present invention; Figure 4 This is a schematic diagram of the end face of the burner head.

[0015] The symbols for each component are as follows: Water inlet pipe 1, water inlet connector 11, oxygen pipe 2, oxygen connector 21, gas pipe 3, gas connector 31, water outlet pipe 4, water outlet connector 41, burner head 5, oxygen injection pipe 51, gas injection pipe 52, connecting flange 6. Detailed Implementation

[0016] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0017] Example: like Figures 1-4As shown, a pure oxygen burner includes a water inlet pipe 1, an oxygen pipe 2, a gas pipe 3, a water outlet pipe 4, and a burner head 5. The water inlet pipe 1 has an inlet connector 11 at its tail and an open end face at its head. The oxygen pipe 2 is fitted outside the water inlet pipe 1, and both its ends are sealed. An oxygen connector 21 is located at the tail of the oxygen pipe 2. The gas pipe 3 is fitted outside the oxygen pipe 2, and both its ends are sealed. An oxygen connector 21 is located at the tail of the gas pipe 3. There is a gas connector 31; the water outlet pipe 4 is sleeved outside the gas pipe 3 and both ends of the water outlet pipe 4 are sealed. The end of the water outlet pipe 4 is provided with a water outlet connector 41, and the water outlet pipe 4 is connected to the water inlet pipe 1; the burner head 5 includes an oxygen injection pipe 51 and a gas injection pipe 52. The oxygen injection pipe 51 is connected to the head end of the oxygen pipe 2 and extends out of the head end of the water outlet pipe 4. The gas injection pipe 52 is connected to the head end of the gas pipe 3 and extends out of the water outlet pipe 4. The head end face; both the oxygen injection pipe 51 and the gas injection pipe 52 are inclined outwards, with the oxygen injection pipe 51 making an angle of 15° with the vertical direction and the gas injection pipe 52 making an angle of 8° with the vertical direction; sixteen oxygen injection pipes 51 and 52 are arranged circumferentially around the water inlet pipe 1; the water inlet connector 11 is located on the end face of the tail of the water inlet pipe 1 and is provided with a bend; the oxygen connector 21 is located on the circumferential surface of the tail of the oxygen pipe 2; the gas connector 31 is located on the gas pipe 3 On the circumferential surface of the tail end; the water outlet connector 41 is located on the circumferential surface of the tail end of the water outlet pipe 4; the water inlet connector 11, oxygen connector 21, gas connector 31 and water outlet connector 41 are staggered in the circumferential direction; the water inlet connector 11, oxygen connector 21, gas connector 31 and water outlet connector 41 are all provided with connecting flanges 6; the head end face of the water inlet pipe 1 is open, and the head end faces of the water inlet pipe 1, oxygen pipe 2 and gas pipe 3 are all provided with a gap between the head end face of the water outlet pipe 4 and the head end face of the water outlet pipe 4 to allow cooling water to pass through.

[0018] By setting up an inlet pipe 1 and an outlet pipe 4, with the inlet pipe 1 located at the very center and the outlet pipe 4 at the outermost periphery, cooling water enters from the central inlet pipe 1, cools the burner head 5, and then exits from the outer outlet pipe 4, resulting in better cooling. By setting up the burner head 5, the gas from the gas pipeline 3 and the oxygen from the oxygen pipeline 2 are both sprayed out from the burner head 5 and mixed, making the flame more controllable and stable. The inlet connector 11, oxygen connector 21, gas connector 31, and outlet connector 41 are all located on the circumference of each pipeline for easy connection of the pre-cooling pipeline. The connection flange 6 ensures a tighter seal when connecting the pre-cooling water, oxygen, and gas pipelines 3. Okay, and more stable; by setting gaps between the head end faces of the water inlet pipe 1, oxygen pipe 2, and gas pipe 3 and the head end face of the water outlet pipe 4 to allow cooling water to pass through, the water inlet pipe 1 and the water outlet pipe 4 are connected through the gaps, making the structure simpler and easier to manufacture; by setting the oxygen injection pipe 51 and the gas injection pipe 52, the injection pressure of oxygen and gas can be increased, the gas is more concentrated, and the flame is more stable and controllable; the angle of the outward tilt of the inner oxygen injection pipe 51 is greater than the angle of the outward tilt of the outer gas injection pipe 52, so that the injected oxygen and gas are mixed at the nozzle, making the flame injection angle more concentrated.

Claims

1. A pure oxygen burner, characterized in that, include: Water inlet pipe (1), the tail end of the water inlet pipe (1) is provided with a water inlet connector (11), and the head end face of the water inlet pipe is provided with an opening. Oxygen pipeline (2), the oxygen pipeline (2) is sleeved outside the water inlet pipeline (1), and the beginning and end faces of the oxygen pipeline are sealed. The tail end of the oxygen pipeline (2) is provided with an oxygen connector (21). Gas pipeline (3), the gas pipeline (3) is sleeved outside the oxygen pipeline (2), and the beginning and end faces of the gas pipeline are sealed. The end of the gas pipeline (3) is provided with a gas connector (31). Water outlet pipe (4), the water outlet pipe (4) is sleeved outside the gas pipeline (3), and the first and last ends of the water outlet pipe are sealed. The tail end of the water outlet pipe (4) is provided with a water outlet connector (41). The water outlet pipe (4) and the water inlet pipe (1) are connected. The burner head (5), the gas pipeline (3), and the oxygen pipeline (2) are all connected to the burner head (5).

2. The pure oxygen burner according to claim 1, characterized in that, The water inlet connector (11) is located on the end face of the water inlet pipe (1) and is provided with a bend; The oxygen connector (21) is located on the circumferential surface of the tail end of the oxygen pipeline (2); The gas connector (31) is located on the circumferential surface of the end of the gas pipeline (3); The water outlet connector (41) is located on the circumferential surface of the end of the water outlet pipe (4); The water inlet connector (11), oxygen connector (21), gas connector (31) and water outlet connector (41) are staggered in the circumferential direction.

3. The pure oxygen burner according to claim 2, characterized in that, The water inlet connector (11), oxygen connector (21), gas connector (31) and water outlet connector (41) are all equipped with connecting flanges (6).

4. The pure oxygen burner according to claim 1, characterized in that, The head end face of the water inlet pipe (1) is open, and the head end faces of the water inlet pipe (1), oxygen pipe (2) and gas pipe (3) are all provided with a gap for cooling water to pass through the head end face of the water outlet pipe (4).

5. The pure oxygen burner according to claim 4, characterized in that, The burner head (5) includes an oxygen injection pipe (51) and a gas injection pipe (52). The oxygen injection pipe (51) is connected to the head end face of the oxygen pipeline (2) and extends out of the head end face of the water outlet pipeline (4). The gas injection pipe (52) is connected to the head end face of the gas pipeline (3) and extends out of the head end face of the water outlet pipeline (4).

6. The pure oxygen burner according to claim 5, characterized in that, Both the oxygen ejector pipe (51) and the gas ejector pipe (52) are inclined outwards. The angle between the oxygen ejector pipe (51) and the vertical direction is 15°, and the angle between the gas ejector pipe (52) and the vertical direction is 8°.

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