Fence type scattered smoke collecting system of industrial silicon submerged arc furnace

Abstract

The utility model discloses a fence type scattered smoke collecting system for an industrial silicon submerged arc furnace. The fence type scattered smoke collecting system comprises the submerged arc furnace and a smoke hood, the smoke hood is arranged on the periphery of the submerged arc furnace in a surrounding mode and located above a furnace door of the submerged arc furnace, at least one smoke collecting and mining opening is formed in the smoke hood, and all the smoke collecting and mining openings are communicated with the smoke dispersing and dust removing flue. The flue gas collecting device has stronger flue gas collecting capacity, parameters of a main fan of a main dust remover of the submerged arc furnace do not need to be amplified in the actual production process, and the complexity of air volume adjustment is reduced. Besides, a maintenance platform of the submerged arc furnace 1 is directly used as the smoke hood top 3 of the smoke hood, a larger smoke buffering area and a smoke gathering area are manufactured, the smoke hood is reasonably arranged, enough space is reserved for furnace base operation such as furnace ramming, and smelting production is not affected at all.

Description

Technical Field

[0001] The utility model relates to the technical field of ore-fired furnace smoke treatment, in particular to a fence-type smoke collection system for an industrial silicon ore-fired furnace. Background Art

[0002] Due to the particularity of industrial silicon furnaces, in the later stage of the roasting process, the silica at the bottom of the furnace has been reduced to silicon melt. The temperature below the material surface is very high, and there is a lot of gas. When the material collapses and the furnace is pounded, the material surface is punctured, and the lower gas rushes out with pressure. Its flow rate has exceeded the wind speed of the main fan acting on the furnace cover, reaching the escape velocity and rushing out of the furnace cover to form a scattered discharge. In order to capture the gas, if the air volume of the main fan is increased blindly, on the one hand, it is not economical. On the other hand, because the peak section of the flue gas volume is too high, if the fan speed is not reduced after the collapse and pounding of the furnace, it will cause loss to the furnace charge and affect the smelting production process. In addition, if Figure 1 As shown, another approach is to set a smoke hood at the furnace door. In order to facilitate the operation of the tamping machine, the hood opening can only be made at an upward angle, that is, a side extraction method is adopted, and due to the height limit of the floor, it cannot be made too large. The smoke rushing out of the furnace has a relatively fast initial speed, and the smoke is in a diffusion process after leaving the furnace door. After entering the smoke hood, the flue will have a 90-degree turn, and the smoke capture pressure loss is large. Therefore, it is very difficult for the smoke to enter the furnace mouth smoke hood, and the smoke capture effect is poor in actual use. Utility Model Content

[0003] In order to solve the above problems, the present application provides an industrial silicon ore-fired furnace fence-type smoke collection system, which can collect and treat the high-speed smoke generated by the industrial silicon ore-fired furnace during ramming and material collapse, and discharge it cleanly after it rushes out of the furnace and diffuses.

[0004] The purpose of the utility model is achieved through the following technical solutions: an industrial silicon ore-fired furnace fence-type scattered smoke collection system, comprising an ore-fired furnace and a smoke hood; the smoke hood is arranged around the ore-fired furnace and is located above the furnace door of the ore-fired furnace, and at least one smoke collection port is provided on the smoke hood, and all the smoke collection ports are connected to the scattered smoke dust removal flue.

[0005] Furthermore, the smoke hood includes a smoke hood top and a smoke hood fence connected to the smoke hood top; the smoke hood fence extends downward and is circumferentially arranged around the outside of the submerged arc furnace; the smoke collection port is arranged on the smoke hood top.

[0006] The utility model can capture the smoke that quickly rushes out of the furnace door in the capture area of ​​the smoke hood, making it easier to collect the diffused smoke. Therefore, in the actual production process, there is no need to increase the main fan parameters of the main dust collector of the submerged arc furnace, and there is no need to consider the changes in air volume before and after material collapse and furnace tamping. Therefore, the complexity of air volume adjustment is reduced, which not only saves economic investment but also simplifies the operation of the dust removal system. Compared with the traditional method of setting a smoke hood at the furnace door, the utility model has a stronger smoke capture ability.

[0007] As a preferred solution, the top of the smoke hood is a maintenance platform for the submerged arc furnace, and the maintenance platform for the submerged arc furnace is connected to the four sides of the submerged arc furnace through a smoke hood connecting part, so that the smoke hood connecting part, the maintenance platform for the submerged arc furnace and the smoke hood fence together form the smoke hood.

[0008] The utility model makes full use of the on-site environment, creates a larger smoke buffer area and smoke capture area, and the reasonable arrangement of the smoke hood leaves enough space for furnace operations such as tamping, without affecting the smelting production at all.

[0009] The fume collection port is connected to the fume dust removal duct through the fume collection pipe.

[0010] A main smoke pipe communicating with the interior of the submerged arc furnace is provided on the top of the submerged arc furnace, and the main smoke pipe is communicated with a main dust removal flue.

[0011] Compared with the prior art, this application has the following beneficial effects:

[0012] (1) The utility model can capture the smoke that quickly rushes out of the furnace door in the capture area of ​​the smoke hood, which is convenient for collecting the diffused smoke. Therefore, in the actual production process, there is no need to increase the main fan parameters of the main dust collector of the submerged arc furnace, and there is no need to consider the changes in air volume before and after the collapse of materials and the tamping of the furnace. Therefore, the complexity of air volume adjustment is reduced, which not only saves economic investment but also simplifies the operation of the dust removal system. Compared with the traditional method of setting a smoke hood at the furnace door, the utility model has a stronger ability to capture smoke.

[0013] (2) The utility model uses the maintenance platform of the ore-arc furnace as the top of the smoke hood, which makes full use of the on-site environment and creates a larger smoke buffer area and smoke capture area. The reasonable arrangement of the smoke hood leaves enough space for furnace operations such as tamping, without affecting the smelting production at all.

[0014] Some additional features of the present application may be described in the following description. Some additional features of the present application will be apparent to those skilled in the art from an inspection of the following description and accompanying drawings, or from a thorough understanding of the production or operation of the embodiments. The features disclosed in this application may be realized and achieved through the practice or use of the various methods, means, and combinations of the specific embodiments described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The exemplary embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation of the present application. In each figure, the same reference numerals represent the same components.

[0016] Figure 1 This is a schematic diagram of installing a smoke hood at the furnace door in traditional technology.

[0017] Figure 2 It is a structural diagram of the present utility model.

[0018] Figure 3 It is a top view of the utility model.

[0019] The figure marks in the above drawings are: 1-submerged arc furnace, 2-smoke hood connection part, 3-smoke hood top, 4-smoke hood fence, 5-smoke collection port, 6-main smoke pipe, 7-smoke and dust removal duct, 8-main dust removal duct, 9-furnace door, 10-platform beams and columns, 11-smoke collection pipe. DETAILED DESCRIPTION

[0020] In order to enable people in this technical field to better understand the solution of this application, the technical solution in the embodiment of this application will be clearly and completely described below in combination with the drawings in the embodiment of this application. Obviously, the described embodiment is only a part of the embodiment of this application, not all of the embodiments.

[0021] Example

[0022] This embodiment discloses an industrial silicon submerged arc furnace fence type smoke collection system, which includes a submerged arc furnace 1 and a smoke hood; wherein the smoke hood is arranged around the submerged arc furnace 1 and is located above the furnace door 9 of the submerged arc furnace 1, such as Figure 2 By means of the above structure, when the material collapses and the furnace is rammed, the smoke that quickly rushes out from the furnace door 9 is collected by the smoke hood.

[0023] Specifically, the smoke hood includes a smoke hood top 3 and a smoke hood fence 4 connected to the smoke hood top 3. The smoke hood fence 4 extends downward to above the furnace door 9 near the submerged arc furnace 1 and is circumferentially arranged on the outside of the submerged arc furnace 1; that is, the smoke hood fence 4 is annular or polygonal, thereby enclosing the submerged arc furnace 1 inside. In this way, the smoke hood top 3 and the smoke hood fence 4 together form a hood body with an opening facing downward, and the diffused smoke that quickly rushes out of the furnace door 9 is collected in the hood body to prevent the smoke from further spreading. Figure 2 The smoke hood fence 4 can be extended downward to a position that does not affect the operator's operation through the furnace door 9.

[0024] In addition, the smoke hood is provided with at least one smoke collecting port 5, and the smoke collecting port 5 is connected to the smoke dust removal flue 7 through the smoke collecting pipe 11. In the specific setting, the smoke collecting port 5 can be set at the top 3 of the smoke hood, and the number can be set to one, two, three or more. In this embodiment, the smoke collecting port 5 is set to four, and the four smoke collecting ports 5 can be evenly distributed around the submerged arc furnace 1, so as to better discharge the smoke collected in the smoke hood through the smoke collecting pipe 11 to the smoke dust removal flue 7, and then transport it to the dust collector through the smoke dust removal flue 7. Figure 3 shown.

[0025] In actual work, when constructing the ore-heating furnace 1, a maintenance platform is usually built around the ore-heating furnace 1 through the platform beams 10. The height of the maintenance platform is higher than the height of the ore-heating furnace 1. During equipment maintenance, maintenance personnel can stand on the maintenance platform to perform relevant maintenance on the ore-heating furnace 1. Based on this, in specific implementation, this embodiment directly uses the maintenance platform of the ore-heating furnace 1 as the smoke hood top 3 of the smoke hood, and the maintenance platform of the ore-heating furnace 1 and the surrounding areas of the ore-heating furnace 1 are connected and sealed through the smoke hood connecting part 2, and the smoke hood fence 4 is directly connected to the lower surface of the maintenance platform of the ore-heating furnace 1 and fixed to the platform beams 10 supporting the maintenance platform, so that the smoke hood is formed by the smoke hood connecting part 2, the maintenance platform of the ore-heating furnace 1 and the smoke hood fence 4. Figure 2 shown.

[0026] In addition, a main smoke pipe 6 communicating with the interior of the submerged arc furnace 1 is provided on the top thereof. The main smoke pipe 6 is communicated with a main dust removal flue 8 , which is in turn connected to an external dust collector.

[0027] The fence-type smoke collection system for the industrial silicon ore-fired furnace of this embodiment fully utilizes the on-site environment. The maintenance platform of the ore-fired furnace 1 is directly used as the top 3 of the smoke hood, which creates a larger smoke buffer area and smoke collection area. The rational arrangement of the smoke hood leaves sufficient space for furnace operations such as ramming, without affecting smelting production at all. This embodiment can capture the high-speed smoke generated during ramming and material collapse in the capture area of ​​the smoke hood, making it easier to collect diffused smoke. By adopting the technical solution of this embodiment, in the actual production process, there is no need to amplify the main fan parameters of the main dust collector of the ore-fired furnace during ramming and material collapse, and there is no need to consider the changes in air volume before and after material collapse and ramming. Therefore, the complexity of air volume regulation is reduced, which not only saves economic investment but also simplifies the operation of the dust removal system. Compared with the traditional method of setting a smoke hood at the furnace door, it has a stronger smoke capture capacity, and the smoke collection port is changed from the traditional side extraction type to the top extraction type, which is more conducive to exhausting smoke.

[0028] It should be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0029] In addition, the above-mentioned specific embodiments are merely illustrative. Those skilled in the art may devise various solutions based on the disclosure of this utility model, and such solutions fall within the scope of disclosure and the scope of protection of this utility model. Those skilled in the art should understand that the specification and drawings of this utility model are illustrative and do not constitute limitations of the claims. The scope of protection of this utility model is defined by the claims and their equivalents.

Claims

1. An industrial silicon submerged arc furnace fume collection system, characterized in that: The invention comprises an ore-heating furnace (1) and a smoke hood; the smoke hood is arranged around the ore-heating furnace (1) and is located above the furnace door (9) of the ore-heating furnace (1); the smoke hood is provided with at least one smoke collecting port (5); and all the smoke collecting ports (5) are connected to a smoke and dust removal flue (7).

2. The fence-type smoke collection system for industrial silicon submerged arc furnace according to claim 1 is characterized in that: The smoke hood comprises a smoke hood top (3) and a smoke hood fence (4) connected to the smoke hood top (3); the smoke hood fence (4) extends downward and is circumferentially arranged outside the submerged arc furnace (1); and the smoke collection port (5) is arranged on the smoke hood top (3).

3. The fence-type smoke collection system for an industrial silicon submerged arc furnace according to claim 2 is characterized in that: The smoke hood top (3) is a maintenance platform for the submerged arc furnace (1), and the maintenance platform for the submerged arc furnace (1) is connected to the surrounding areas of the submerged arc furnace (1) through a smoke hood connection part (2), so that the smoke hood connection part (2), the maintenance platform for the submerged arc furnace (1) and the smoke hood fence (4) together form the smoke hood.

4. The fence-type fume collection system for industrial silicon submerged arc furnace according to claim 1 is characterized in that: The fume collection port (5) is connected to the fume dust removal duct (7) via the fume collection pipe (11).

5. The fence-type fume collection system for an industrial silicon submerged arc furnace according to any one of claims 1 to 4, characterized in that: A main smoke pipe (6) communicating with the interior of the submerged arc furnace (1) is provided on the top of the submerged arc furnace (1), and the main smoke pipe (6) is communicated with a main dust removal flue (8).

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