An air-cooled supporting beam for the furnace hood partition wall

Abstract

An embodiment of the present application discloses an air-cooled supporting beam for the furnace hood partition wall, which relates to the technical field of furnace hood equipment in the metallurgical industry, and includes: a first transverse movement module, including: a supporting beam main body; an air extraction air box, the air extraction air box is connected to the supporting beam main body; a heat insulation module, the heat insulation module is wrapped around the outer layer of the supporting beam main body; a blocking module, the blocking module is arranged at the lower end of the supporting beam main body, and the blocking module is used to block the harmful flue gas in the air-blowing drying section from flowing into the air-extraction drying section. By arranging the heat insulation module and the blocking module, the erosion of the low-humidity flue gas in the air-blowing drying section and the high-temperature gas in the air-extraction drying section on the supporting beam is isolated, and the damage of the supporting beam is avoided.

Description

Technical Field

[0001] This application relates to the technical field of hood equipment in the metallurgical industry, and particularly to an air-cooled supporting beam for the partition wall of a hood. Background Art

[0002] In the pellet production process of a traveling grate machine, there are a blast drying section (UDD) and a suction drying section (DDD) for drying green pellets. A partition wall device is provided between the blast drying section (UDD) and the suction drying section (DDD). The existing partition wall structure is a form of partition wall where the lower water-cooled supporting beam supports refractory bricks or the upper steel structure crossbeam hangs refractory bricks. The water-cooled supporting beam has problems of corrosion and water leakage, and the steel structure crossbeam hanging refractory bricks has problems of foreign objects or abnormal material surface colliding or rubbing against the partition wall, which may cause the lower part of the partition wall to turn or collapse, and the traveling grate machine has to stop production for maintenance. At the same time, there are pollutants such as SO2 and NOx in the flue gas of the suction drying section (DDD). During production, this flue gas is likely to enter the upper hood of the blast drying section (UDD) and be discharged into the atmosphere after dust removal together with the blast drying flue gas. Since the blast drying flue gas itself does not contain pollutants such as SO2 and NOx, only dust removal treatment is carried out, resulting in the direct discharge of pollutants such as SO2 and NOx coming from the suction drying section (DDD) into the atmosphere and polluting the environment. Summary of the Invention

[0003] The purpose of this application is to provide a traversing car to solve the technical problems existing in the prior art: namely, how to solve the technical problems of water leakage, brick dropping or collapse of the supporting beam of the partition wall of the hood of the existing traveling grate machine and the air leakage from the upper hood of the suction drying section to the upper hood of the blast drying section.

[0004] To solve the above technical problems, this application adopts the following technical solutions:

[0005] The first aspect of the embodiment of this application provides an air-cooled supporting beam for the partition wall of a hood, including: a supporting beam main body;

[0006] A suction air box, the suction air box is connected to the supporting beam main body; a heat insulation module, the heat insulation module is wrapped around the outer layer of the supporting beam main body; a blocking module, the blocking module is arranged at the lower end of the supporting beam main body, and the blocking module is used to block the harmful flue gas in the blast drying section from flowing into the suction drying section.

[0007] In some embodiments, the supporting beam main body includes: a first steel pipe, both ends of the first steel pipe are closed, there is an air inlet on one side of the first steel pipe, and there is an air outlet on the other side of the first steel pipe. The suction air box is connected to the air outlet through an air outlet pipe; a first air inlet pipe, one end of the first air inlet pipe is connected to the air inlet, and the other end of the first air inlet pipe is connected to the roasting machine.

[0008] In some embodiments, the heat insulation module includes: a mounting assembly fixed to the first steel pipe; a composite masonry layer fixed to the mounting assembly.

[0009] In some embodiments, the composite masonry layer includes: a high-temperature resistant fiber felt fixed to the outer layer of the first steel pipe through the mounting assembly; a refractory casting layer cast on the outside of the high-temperature resistant fiber felt.

[0010] In some embodiments, the mounting assembly includes multiple rows of anchoring hooks arranged on the first steel pipe.

[0011] In some embodiments, the barrier module includes: a second steel pipe fixed to the lower end of the first steel pipe; air blowing holes provided at the lower end of the second steel pipe; a air blowing assembly connected to the second steel pipe.

[0012] In some embodiments, the air blowing assembly includes a blower and a second air inlet pipe, and the blower is connected to the second steel pipe through the second air inlet pipe.

[0013] In some embodiments, the air blowing holes are elongated and multiple air blowing holes are provided.

[0014] In some embodiments, angle steels are welded around the first steel pipe and the second steel pipe, and the angle steels are used to connect the roasting machine.

[0015] In some embodiments, the angle steels are made of stainless steel or boiler steel.

[0016] From the above technical solutions, it can be seen that the present application has at least the following advantages and positive effects:

[0017] An air-cooled supporting beam for the furnace hood partition wall in the present application isolates the erosion of the low-humidity flue gas in the up-draught drying section (UDD) and the high-temperature gas in the down-draught drying section (DDD) on the supporting beam through the arrangement of the heat insulation module and the barrier module, avoiding damage to the supporting beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0019] Figure 1 It is a structural schematic diagram of an air-cooled supporting beam for the furnace hood partition wall according to an embodiment;

[0020] Figure 2One of the partial structural schematic diagrams of the air-cooled supporting beam of the furnace hood partition wall according to an embodiment;

[0021] Figure 3 Another partial structural schematic diagram of the air-cooled supporting beam of the furnace hood partition wall according to an embodiment.

[0022] Explanation of the reference numerals is as follows: 1. First steel pipe; 2. High-temperature resistant fiber felt; 3. Refractory casting layer; 4. First air inlet pipe; 5. Second air inlet pipe; 6. Air outlet pipe; 7. Anchor hook; 8. Second steel pipe; 9. Air blowing hole. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0024] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0025] The terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features.

[0026] In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0027] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "connected", "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0028] Please refer to Figure 1 、Figure 2 and Figure 3 。

[0029] Figures 1 to 3 is a schematic structural view of an air-cooled supporting beam for a furnace hood partition wall in an embodiment of the present application. As shown in the figure, it includes: a supporting beam main body; an air extraction air box, which is connected to the supporting beam main body; a heat insulation module, which is wrapped around the outer layer of the supporting beam main body; a blocking module, which is arranged at the lower end of the supporting beam main body, and the blocking module is used to block the harmful flue gas in the blowing drying section from flowing into the air extraction drying section. By setting the heat insulation module and the blocking module, the erosion of the low-humidity flue gas in the blowing drying section (UDD) and the high-temperature gas in the air extraction drying section (DDD) on the supporting beam is isolated, avoiding damage to the supporting beam.

[0030] In this embodiment, the supporting beam main body includes: a first steel pipe 1, both ends of the first steel pipe 1 are closed, an air inlet is provided on one side of the first steel pipe 1, an air outlet is provided on the other side of the first steel pipe 1, and the air extraction air box is connected to the air outlet through an air outlet pipe 6; a first air inlet pipe 4, one end of the first air inlet pipe 4 is connected to the air inlet, and the other end of the first air inlet pipe 4 is connected to the roasting machine. In the specific implementation process of this embodiment, the gas in the supporting beam comes from the air outside the roasting machine and is led to the air box after passing through the first steel pipe 1, and there is no need to separately provide a cooling fan.

[0031] In this embodiment, the heat insulation module includes: a mounting component, which is fixed on the first steel pipe 1; a composite masonry layer, which is fixed on the mounting component.

[0032] In this embodiment, the composite masonry layer includes: a high-temperature resistant fiber felt 2, which is fixed on the outer layer of the first steel pipe 1 through the mounting component; a refractory casting layer 3, which is cast on the outside of the high-temperature resistant fiber felt 2.

[0033] In this embodiment, the mounting component includes a plurality of rows of anchoring hooks 7 arranged on the first steel pipe 1.

[0034] In this embodiment, the blocking module includes: a second steel pipe 8, which is fixed at the lower end of the first steel pipe 1; air blowing holes 9, which are arranged at the lower end of the second steel pipe 8; a blowing component, which is connected to the second steel pipe 8. The gas in the second steel pipe flows out through the air blowing holes to form an air curtain to block the harmful flue gas in the blowing drying section (UDD) from flowing into the air extraction drying section (DDD).

[0035] In this embodiment, the blowing component includes a blower and a second air inlet pipe 5, and the blower is connected to the second steel pipe 8 through the second air inlet pipe 5.

[0036] In this embodiment, the air blowing holes 9 are slender and there are multiple air blowing holes 9.

[0037] In this embodiment, angle steels are welded around the first steel pipe 1 and the second steel pipe, and the angle steels are used to connect the roasting machine.

[0038] As can be seen from the above technical solutions, the present application has at least the following advantages and positive effects:

[0039] An air-cooled supporting beam for the furnace hood partition wall in the present application, by providing a heat insulation module and a barrier module, isolates the erosion of the low-humidity flue gas in the up-draft drying section (UDD) and the high-temperature gas in the down-draft drying section (DDD) on the supporting beam, and avoids the damage of the supporting beam.

[0040] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0041] The above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An air-cooled supporting beam for the furnace hood partition wall, characterized in that, Comprising: Joist main body; Exhaust air bellows, which is connected to the joist main body; Heat insulation module, which is wrapped around the outer layer of the joist main body; Barrier module, which is arranged at the lower end of the joist main body and is used to block the harmful flue gas in the blast drying section from flowing into the exhaust drying section; The joist main body includes: First steel pipe, both ends of which are closed. An air inlet is provided on one side of the first steel pipe, and an air outlet is provided on the other side of the first steel pipe. The exhaust air bellows is connected to the air outlet through an exhaust pipe; First air inlet pipe, one end of which is connected to the air inlet, and the other end of which is connected to the roasting machine; The barrier module includes: Second steel pipe, which is fixed to the lower end of the first steel pipe; Air blowing holes, which are arranged at the lower end of the second steel pipe; Blast component, which is connected to the second steel pipe; The gas in the second steel pipe flows out through the air blowing holes to form an air curtain to block the harmful flue gas in the blast drying section from flowing into the exhaust drying section.

2. The air-cooled supporting beam of the furnace hood partition wall according to claim 1, characterized in that The heat insulation module includes: Installation component, which is fixed on the first steel pipe; Composite masonry layer, which is fixed to the installation component.

3. The air-cooled supporting beam for the furnace hood partition wall according to claim 2, characterized in that The composite masonry layer includes: High-temperature resistant fiber felt, which is fixed to the outer layer of the first steel pipe through the installation component; Refractory casting layer, which is cast on the outside of the high-temperature resistant fiber felt.

4. The air-cooled supporting beam of the furnace hood partition wall according to claim 2, characterized in that The installation component includes multiple rows of anchoring hooks arranged on the first steel pipe.

5. The air-cooled supporting beam for the furnace hood partition wall according to claim 1, wherein, The blast component includes a blower and a second air inlet pipe, and the blower is connected to the second steel pipe through the second air inlet pipe.

6. The air-cooled supporting beam of the furnace hood partition wall according to claim 5, characterized in that The air blowing holes are slender and there are multiple air blowing holes.

7. The air-cooled supporting beam for the furnace hood partition wall according to claim 1, wherein, Angle steels are welded around the first steel pipe and the second steel pipe, and the angle steels are used to connect the roasting machine.

8. The air-cooled supporting beam for the furnace hood partition wall according to claim 7, characterized in that, The angle steels are made of stainless steel or boiler steel.

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