Patent Application
20250101539
The invention relates to a blast furnace blower device.
A blast furnace is an iron-making process that consists of a top distribution area, a middle combustion area, and a bottom collection area. Solid raw materials such as iron ore, coke (reducing agent or fuel) are fed into the distribution area of the blast furnace in batches by the top distribution device of the furnace in accordance with the prescribed dosage ratio, the material surface of the furnace throat is kept at a certain height, and a large amount of air is introduced to form a high-temperature combustion zone through the air outlet for the operation of the blast furnace. Accordingly, the iron ore raw materials are gradually reduced and melted into iron and slag in the process of descending, which are collected in the bottom collection area, and are regularly discharged from the iron opening and the slag opening.
The cold air sent out by the blower device is heated to 800° C. to 1350° C. in the blast furnace, and then continuously and steadily enters the combustion zone of the furnace cylinder through the air outlet, and the hot air causes the coke in front of the air outlet to combust, resulting in the incandescent reductive gas of more than 2,000° C. The rising high-temperature gas flow heats the iron ore and flux and turns it into a liquid state. It causes the iron ore to complete a series of physical and chemical changes, and the gas flow gradually cools down.
In some circumstances, there may be several problems with the blower device, such as heat accumulation on the blast nozzle wall of the blast furnace resulting in thermal damage, which leads to thermal deformation of the blast furnace structure, or the poor life and durability of the blast furnace structure. Also, there may be problems with uneven combustion temperature or insufficient combustion temperature, in that case, which will lead to a reduction in the combustion efficiency of the blowout nozzle.
Based on the foregoing, how to improve the combustion efficiency of the blow nozzle and have a better blast furnace blowout combustion temperature may be an important issue, thereby increasing the service life of the furnace nozzle.
An embodiment of the present disclosure provides a blast furnace blower device including a body, a flow guidance structure and a cooling module. The body is hollow inside. The body includes an inlet area, an outlet nozzle area, and a fuel nozzle area. The fuel nozzle area is located between the outlet nozzle area and the inlet area, and a channel is formed from the inlet area to the outlet nozzle area. The flow guidance structure is deployed continuously or discontinuously along an inner wall of the body. The flow guidance structure is located between the fuel nozzle area and the outlet nozzle area. The flow guidance structure has a nozzle distance range along an axial direction of the body to the outlet nozzle area. The cooling module is located outside the body.
A detailed description is given in the following embodiments with reference to the accompanying drawings, in order to make the disclosure more comprehensible.
The following embodiments are set forth in detail with accompanying drawings, but the embodiments provided are not intended to limit the scope of the disclosure. In addition, the drawings are for illustrative purposes only and are not drawn to original size. To facilitate understanding, the same components will be identified with the same symbols in the following description.
The terms “including”, “comprising”, “having”, etc. mentioned in the disclosure are open terms, which means “including but not limited to”.
In the description of various embodiments, when describing the components in terms of “first,” “second,” “third,” “fourth,” and the like, it is used only to distinguish these components from one another, and does not limit the order or importance of these components.
In the illustrations of various embodiments, the so-called “coupling” or “connection” may refer to two or more elements being in direct physical or electrical contact with each other, or in indirect physical or electrical contact with each other, and “coupling” or “connection” may also refer to the mutual operation or action of two or more components.
The flow guidance structure 120 is disposed continuously along the inner wall 111 of the body 110 or is disposed discontinuously along the inner wall 111 of the body 110. For example, the flow guidance structure 120 is deployed continuously along the inner wall 111 of the body 110 and is arranged around the inner wall 111 of the body 110. In other embodiments, the flow guidance structure 120 is disposed around the inner wall 111 of the body 110 along the discontinuous extending portions of the inner wall 111 of the body 110. The flow guidance structure 120 is located between the fuel nozzle area 116 and the outlet nozzle area 114. The flow guidance structure 120 has a range of nozzle distance P1 from the body 110 along the axial direction AX to the outlet nozzle area 114.
In this configuration, the inlet area 112 is used for the passage of oxygen G1. The fuel nozzle area 116 is used for the introduction of, for example, the methane G2, into the channel 118, as a blowing for the combustion reaction. By arranging the flow guidance structure 120 located around the inner wall 111 of the body 110, the gases, mixed combustion gases, or fluids, are directed by the flow guidance structure 120 to the center of the channel 118. This present embodiment may improve the problem of heat damage caused by heat accumulation on the inner wall 111 of the blast furnace blower device 100 and provides a better combustion temperature of the blast furnace blowout.
The shape of the flow guidance structure 120 is not limited by the present disclosure. For example, the flow guidance structure 120 protrudes from the inner wall 111 of the body 110. That is, the flow guidance structure 120 is a continuously deployed with extending convex body disposed on the inner wall 111 of the body 110. In other embodiments, the flow guidance structure 120 is deployed discontinuously, which extends along the inner wall 111 of the body 110 and is disposed around the inner wall 111 of the body 110. That is, the flow guidance structure 120 is a plurality of convex body portions that surround the inner wall 111 of the body 110. In other embodiments, the flow guidance structure is a concave-convex structure or an irregular-shaped structure.
In one embodiment, the flow guidance structure 120 can be integrally formed with the inner wall 111 of the body 110. That is, the peripheral surface 113 of the body 110 is recessed to form the flow guidance structure 120. In other embodiments, the flow guidance structure 120 can be provided separately from the inner wall 111 of the body 110. That is, the flow guidance structure 120 can be an insert component disposed on the inner wall 111 of the body 110.
In one embodiment, the flow guidance structure 120 is an annular groove 122 surrounding the body 110. In other embodiments, the flow guidance structure 120 can be any other shape of groove. In a further embodiment, the edge of the annular groove 120 has a round corner 122B for providing smooth flow of fluids. The flow guidance structure 122 has a flow guidance depth R1, and the flow guidance depth R1 is formed by recessing the peripheral surface 113 of the body 110. The interval range of the flow guidance depth is between 0.05D and 0.2D. The flow guidance depth is, for example, 0.05D, 0.075D, 0.1D, 0.15D, 0.175D, and 0.2D. D is the pipe diameter of the body 110. Taking
In one embodiment, the nozzle distance P1 is defined as the distance from the center point 122A of the flow guidance structure 122 along the axial direction AX of the body 110 to the outlet nozzle area 114. The range of the nozzle distance P1 is between 1/2L and 1/6L, such as 1/2L, 1/3L, 1/4L, 1/5L, and 1/6L. L is the length of the body 110. For example, the range of the nozzle distance P1 is between 20% and 50%. Taking
In one embodiment, the fuel nozzle area 116 is at a nozzle orifice 116A of the body 110, and the nozzle orifice 116A is connected to a fuel pipe 140. The fuel pipe 140 provides, for example, the methane G2, to the nozzle orifice 116A, and is introduced into the channel 118. In a further embodiment, there is a nozzle angle A1 between the fuel nozzle area 116 and the body 110. The nozzle angle A1 of the fuel nozzle area 116 is, for example, 0 degrees, 15 degrees, 30 degrees, 45 degrees, or 60 degrees. That is, the range of the nozzle angle A1 is between 0 degrees and 60 degrees. The nozzle angle A1 of 0 degrees indicates that the fuel nozzle area 116 is orthogonal to the inner wall 111 of the body 110. Taking
As shown in
In other embodiments, for further optimization, the nozzle distance P1, the flow guidance depth R1, or the nozzle angle A1 of the fuel nozzle area 116 can be further adjusted.
In summary, the blast furnace blower device of the present disclosure provides a flow guidance structure located around the inner wall of the body, so that these gases, mixed combustion gases, or fluids, are directed by the flow guidance structure to the center of the channel. It may improve the problem of heat damage caused by heat accumulation on the wall surface of the inner wall of the blast furnace blower device, and provide a better blast furnace blowout combustion temperature.
A blast furnace blower device provided by the embodiments of the present disclosure may have a better blast furnace blowout combustion temperature. At the same time, it may also improve the thermal damage problem caused by heat accumulation on the wall surface of the blast furnace blower device, improve the durability of the blowout nozzle, and increase the service life of the blast furnace blower device.
Based on the foregoing, the blast furnace blower device of the present disclosure provides a flow guidance structure located around the inner wall of the body, so that these gases, mixed combustion gases, or fluids, are directed by the flow guidance structure to the center of the channel. It may improve the problem of heat damage caused by heat accumulation on the wall surface of the inner wall of the blast furnace blower device, and provide a better blast furnace blowout combustion temperature.
Although the disclosure has been disclosed in the form of embodiments, it is not intended to limit the present disclosure. Anyone with general knowledge in the field of technology may make some changes and modifications without departing from the spirit and scope of the present disclosure, and therefore the scope of protection of the disclosure shall be subject to the scope of the patent application attached hereto.
| Number | Date | Country | Kind |
|---|---|---|---|
| 112136887 | Sep 2023 | TW | national |
This application claims the benefits of U.S. Provisional Application No. 63/540,398, filed on Sep. 26, 2023, and Taiwan application Serial No. 112136887, filed on Sep. 26, 2023, the disclosures of which are incorporated by references herein in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| 63540398 | Sep 2023 | US |
