A heat preservation and flow guiding device and method in a sinter denitration tower

Abstract

The application provides a heat preservation flow guide device in a sinter denitration tower, which comprises a mounting seat fixedly attached to the inside of a flue, a flow guide part with a first end fixedly attached to the mounting seat and a second end suspended and parallel to the mounting seat, and a middle part inclined to the mounting seat, wherein an installation gap is formed between the mounting seat and the flow guide part for placing a heat preservation layer. The technical scheme of the application has at least the following beneficial effects: the flow guide part is provided and connected to the mounting seat, when flue gas moves from bottom to top, the flue gas is washed onto the flow guide part and changes direction under the guidance of the flow guide part, reducing the washing of the heat preservation device by the flue gas and prolonging the service life of the heat preservation device, and the device is convenient and fast to install, saving human resources during installation and disassembly.

Description

Technical Field

[0001] This application relates to the field of sintering denitrification tower flue technology, specifically to a heat insulation and flow guiding device and method for a sintering denitrification tower. Background Technology

[0002] The sintering flue gas denitrification device has a 3750mm long and 200mm thick internal insulation structure on one side of the original flue gas duct of the denitrification tower (between the bottom of the internal pipe of the heating furnace flue gas duct and the GGH heat exchange structure). This internal insulation structure consists of a 200mm thick aluminum silicate fiber blanket, a 240mm long M8 screw, and a 2mm thick stainless steel plate. During the denitrification process, when the heating furnace is working, the high-temperature flue gas exiting the heating furnace exceeds 1000℃. The main function of the insulation is to protect the flue gas duct from melting or deformation due to high temperatures. In addition, the internal insulation device also reduces heat loss and keeps the flue gas warm as the original flue gas is heated by the GGH heat exchange elements.

[0003] However, the flue gas inside the flue was constantly scouring the internal insulation device, and there were no protective measures at the bottom of the internal insulation device. The scouring by the flue gas was severe, causing the internal insulation fixing bolts to break and the insulation layer to fall off. As a result, the aluminum silicate fiber blanket in the internal insulation device was blown to the catalyst layer by the high temperature flue gas, making it impossible for the denitrification tower to carry out denitrification work, resulting in abnormal production interruption. 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 heat preservation and flow guiding device and method in a sintering denitrification tower, which solves the problem that in the prior art, flue gas in the flue is constantly scouring the internal heat preservation device, and the bottom of the internal heat preservation device is not protected. The severe scouring by the flue gas makes the denitrification tower unable to perform denitrification work, causing abnormal production interruption.

[0005] To achieve the above and other related objectives, the present invention provides a heat-insulating and flow-guiding device for a sintering denitrification tower, comprising: Mounting base, which fits and is fixed inside the flue; The guide section has a first end fixedly mounted on the mounting base, a second end suspended parallel to the mounting base, and a middle portion inclined to the mounting base. An installation gap is formed between the mounting base and the flow guide to accommodate the insulation layer.

[0006] Optionally, an adjustment component is also provided between the flow guide and the mounting base to adjust the thickness of the installation gap.

[0007] Optionally, the adjustment assembly includes at least one adjustment plate, which is detachably disposed on the inner side of the flow guide near the mounting base.

[0008] Optionally, the adjusting plate includes a first section plate and a second section plate, one end of the first section plate is connected to one end of the second section plate, and the connection between the first section plate and the second section plate is an obtuse angle, and the adjusting plate is disposed in close contact with the guide portion.

[0009] Optionally, the first end of the flow guide is provided with a plurality of waist-shaped holes, and the flow guide is fixed on the mounting base through the waist-shaped holes.

[0010] Optionally, a plurality of reinforcing ribs are arranged in parallel on the outer side of the flow guide portion away from the mounting base, and a flow guide groove is formed between the plurality of reinforcing ribs.

[0011] A method for heat preservation and flow guidance in a sintering denitrification tower, comprising the heat preservation and flow guidance device described in any one of the above claims: The mounting plate is fixed inside the flue, and the guide part is fixed on the mounting plate, forming an installation gap between the mounting plate and the guide part; Inspect the thickness of the insulation layer; Based on the thickness of the insulation layer, an adjustment component is placed within the installation gap to adjust the thickness of the installation gap. Place an insulation layer in the installation gap.

[0012] As described above, the beneficial effects of the technical solution in this invention include at least the following: by setting up a flow guide and connecting the flow guide to the mounting base, when the flue gas moves from bottom to top, the flue gas washes onto the flow guide and is guided by the flow guide to change direction, thereby reducing the scouring of the insulation device by the flue gas and extending its service life. Moreover, this device is easy and quick to install, saving manpower during installation and disassembly. Attached Figure Description

[0013] Figure 1 The diagram shown is a structural schematic diagram of an exemplary embodiment of the present invention; Figure 2 Shown as a side view of an exemplary embodiment of the present invention; Figure 3 The diagram shown is a flowchart of a method according to an exemplary embodiment of the present invention.

[0014] Part Number Explanation 1. Mounting base; 2. Flow guide; 3. Adjustment component; 4. Waist-shaped hole. Detailed Implementation

[0015] The following specific examples illustrate the implementation of the present invention. 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.

[0016] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0017] Please see Figure 1 and Figure 2 This invention provides a heat-insulating and flow-guiding device for a sintering denitrification tower, comprising: Mounting base 1, which is fitted and fixed inside the flue; The guide section 2 has a first end fixedly mounted on the mounting base 1, a second end suspended parallel to the mounting base 1, and a middle portion inclined to the mounting base 1. An installation gap is formed between the mounting base 1 and the flow guide 2 for placing the insulation layer.

[0018] In one embodiment of this application, specifically, the device includes a mounting base 1 and a flow guide 2. The mounting base 1 is a rectangular plate structure, vertically mounted on the inner wall of the flue. Multiple threaded holes are evenly distributed at the bottom of the mounting base 1, and fixing bolts pass through these threaded holes to fix the mounting base 1. The flow guide 2 comprises three sections. The first flow guide plate is parallel to and fixedly connected to the mounting base 1. The lower end of the second flow guide plate is connected to the upper end of the first flow guide plate, and the second flow guide plate is inclined. The guide plate is set away from the mounting base 1 from bottom to top. The lower end of the third guide plate is connected to the upper end of the second guide plate, and the third guide plate is parallel to the mounting base 1. An installation gap is formed between the guide section 2 and the mounting base 1. The lower part of the installation gap gradually increases from bottom to top until it reaches the third section. The thickness of the installation gap remains unchanged. An insulation layer is filled in the installation gap to protect the flue. The guide section 2 can guide the flue gas in the flue to avoid the flue gas continuously scouring the insulation pool and causing the insulation layer to fall off.

[0019] An adjustment component 3 is also provided between the flow guide 2 and the mounting base 1 to adjust the thickness of the installation gap.

[0020] In one embodiment of this application, the thickness of the insulation layer produced by different manufacturers or different production models is different. An adjustment component 3 is provided between the guide part 2 and the mounting base 1. The adjustment component 3 can adjust the thickness of the installation gap to adapt to insulation layers of different thicknesses, so as to facilitate the tight installation of insulation layers of different thicknesses.

[0021] The adjustment assembly 3 includes at least one adjustment plate, which is detachably disposed on the inner side of the flow guide 2 near the mounting base 1.

[0022] The adjusting plate includes a first section plate and a second section plate. One end of the first section plate is connected to one end of the second section plate, and the connection between the first section plate and the second section plate is an obtuse angle. The adjusting plate is fitted to the flow guide 2.

[0023] In one embodiment of this application, specifically, the adjustment component 3 consists of at least one adjustment plate. Adjustment plates of different thicknesses are stacked according to the insulation layer of different thicknesses to tightly install the insulation layer into the installation gap, so as to prevent the insulation layer from slipping off. The adjustment plate consists of two sections, wherein the first section adjustment plate and the second section adjustment plate are connected at an obtuse angle, that is, the adjustment plate is attached to the second section guide plate and the third section guide plate.

[0024] The first end of the flow guide 2 is provided with a plurality of waist-shaped holes 4, and the flow guide 2 is fixed on the mounting base 1 through the waist-shaped holes 4.

[0025] In one embodiment of this application, specifically, a plurality of waist-shaped holes 4 are evenly arranged at the lower end of the guide section 2. When the guide section 2 is continuously flushed by flue gas, the waist-shaped holes 4 can play a buffering role, allowing the guide section 2 to move upward slowly and reducing the wind force received by the guide section 2.

[0026] The flow guide 2 has multiple reinforcing ribs arranged in parallel on its outer surface away from the mounting base 1, and flow guide grooves are formed between the multiple reinforcing ribs.

[0027] Please see Figure 3 This application also provides a method for heat preservation and flow guidance in a sintering denitrification tower, including the heat preservation and flow guidance device described in any of the above claims.

[0028] Step 110: Fix the mounting plate inside the flue and fix the guide part 2 on the mounting plate, forming an installation gap between the mounting plate and the guide part 2; Step 120: Detect the thickness of the insulation layer; Step 130: Based on the thickness of the insulation layer, an adjustment component 3 is placed in the installation gap to adjust the thickness of the installation gap; Step 140: Place the insulation layer in the installation gap. 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 heat-insulating and flow-guiding device for a sintering denitrification tower, characterized in that, include: Mounting base, which fits and is fixed inside the flue; The guide section has a first end fixedly mounted on the mounting base, a second end suspended parallel to the mounting base, and a middle portion inclined to the mounting base. An installation gap is formed between the mounting base and the flow guide to accommodate the insulation layer; The flow guiding section includes a first flow guiding plate, a second flow guiding plate, and a third flow guiding plate. The first flow guiding plate is parallel to and fixedly connected to the mounting base. The lower end of the second flow guiding plate is connected to the upper end of the first flow guiding plate, and the second flow guiding plate is inclined and gradually moves away from the mounting base from bottom to top. The lower end of the third flow guiding plate is connected to the upper end of the second flow guiding plate, and the third flow guiding plate is parallel to the mounting base. An installation gap is formed between the flow guiding section and the mounting base. The lower part of the installation gap gradually increases from bottom to top until it reaches the position of the third flow guiding plate, at which point the thickness of the installation gap remains unchanged. An adjustment component is also provided between the flow guide and the mounting base to adjust the thickness of the installation gap.

2. The heat preservation and flow guiding device in a sintering denitrification tower according to claim 1, characterized in that: The adjustment assembly includes at least one adjustment plate, which is detachably disposed on the inner side of the flow guide near the mounting base.

3. The heat-insulating and flow-guiding device in a sintering denitrification tower according to claim 2, characterized in that: The adjusting plate includes a first section plate and a second section plate. One end of the first section plate is connected to one end of the second section plate, and the connection between the first section plate and the second section plate is an obtuse angle. The adjusting plate is fitted to the flow guide portion.

4. The heat-insulating and flow-guiding device in a sintering denitrification tower according to claim 1, characterized in that: The first end of the flow guide is provided with a plurality of waist-shaped holes, and the flow guide is fixed on the mounting base through the waist-shaped holes.

5. The heat-insulating and flow-guiding device in a sintering denitrification tower according to claim 1, characterized in that: Multiple reinforcing ribs are arranged side by side on the outer surface of the flow guide away from the mounting base, and flow guide grooves are formed between the multiple reinforcing ribs.

6. A method for heat preservation and flow guidance in a sintering denitrification tower, comprising the heat preservation and flow guidance device according to any one of claims 1-5, characterized in that: The mounting plate is fixed inside the flue, and the guide part is fixed on the mounting plate, forming an installation gap between the mounting plate and the guide part; Inspect the thickness of the insulation layer; Based on the thickness of the insulation layer, an adjustment component is placed within the installation gap to adjust the thickness of the installation gap. Place an insulation layer in the installation gap.

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