Low-energy-consumption submerged arc furnace flue gas treatment device

Abstract

The utility model discloses a low-energy-consumption submerged arc furnace flue gas treatment device which comprises an arc-shaped flue gas inlet pipe connected with a submerged arc furnace, a treatment box is installed at the other end of the arc-shaped flue gas inlet pipe, a panel is installed in the treatment box, a plurality of flue gas inlet holes are formed in the panel, and a plurality of slag discharging holes are formed in the two sides of the treatment box. Dust removal cloth bags of arc-shaped structures are installed between the smoke inlet holes and the slag discharge holes, the two ends of each dust removal cloth bag are open, the treatment box is sleeved with a sealing frame, through holes are formed in the positions, right opposite to the slag discharge holes, of the sealing frame, sealing plugs are arranged in the through holes, and one ends of the sealing plugs are inserted into the slag discharge holes. The dust collector is simple in structure, entering flue gas can be filtered through the dust collection cloth bag of the arc-shaped structure, intercepted impurities stay at the dust collection cloth bag and the sealing plug, after the sealing plug is opened, the impurities left in the dust collection cloth bag can be rapidly discharged, and the dust collection effect is good. Therefore, the filtering speed and the smoke passing speed are prevented from being influenced by excessive internal impurities.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a low-energy consumption submerged arc furnace flue gas treatment device. Background Art

[0002] Submerged arc furnace equipment is also called electric arc furnace or resistance furnace. It is mainly used for reducing and smelting raw materials such as ores, carbonaceous reducing agents and solvents. It uses the energy of the electric arc and the current passing through the charge to generate energy due to the resistance of the charge to melt the metal. It is an industrial electric furnace that adds materials one after another, discharges iron slag intermittently, and operates continuously.

[0003] However, during the operation of the current blast furnace, the flue gas needs to be treated. Dust bags are used in the process of flue gas treatment. However, the dust bags installed now have a simple structure, which makes it impossible to quickly remove the impurities intercepted inside the dust bags. As the impurities accumulate, the filtering speed of the flue gas will be affected. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a low-energy consumption submerged arc furnace fume treatment device, which can quickly discharge internal impurities through a dust removal bag with an arc structure to solve the problems raised in the above background technology.

[0005] The utility model is realized through the following technical scheme: a low-energy consumption ore-heating furnace smoke treatment device, comprising an arc-shaped smoke inlet pipe connected to the ore-heating furnace, a treatment box is installed at the other end of the arc-shaped smoke inlet pipe, a panel is installed inside the treatment box, a plurality of smoke inlet holes are arranged on the panel, a plurality of slag discharge holes are arranged on both sides of the treatment box, dust removal bags with arc-shaped structures are installed between the smoke inlet holes and the slag discharge holes, both ends of the dust removal bags are opened, a sealing frame is provided on the outside of the treatment box, through holes are arranged at the sealing frames corresponding to the slag discharge holes, sealing plugs are arranged in the through holes, one end of the sealing plugs is inserted into the slag discharge holes, and the slag discharge holes are sealed.

[0006] As a preferred technical solution, a pull plate is installed on the outer side of the sealing plug on the same side, multiple first compression springs are installed between the pull plate and the processing box, a handle is installed on the outer side of the pull plate, and an insulation layer is installed outside the handle.

[0007] As a preferred technical solution, a smoke outlet pipe is installed on the bottom surface of the processing box, and a connecting flange is installed at one end of the smoke outlet pipe and the arc-shaped smoke inlet pipe.

[0008] As a preferred technical solution, a fixed frame is installed outside the processing box, the fixed frame is arranged above the sealing frame, a plurality of second compression springs are installed between the fixed frame and the sealing frame, and a retreat space is formed between the fixed frame and the sealing frame for the sealing frame to move upward.

[0009] As a preferred technical solution, the sealing plug is made of a high temperature resistant rubber material, and the diameter of the sealing plug matches the inner diameter of the slag discharge hole.

[0010] As a preferred technical solution, the inner side surface of the sealing frame is arranged in contact with the outer side surface of the processing box.

[0011] As a preferred technical solution, the arc-shaped smoke inlet pipe is arranged in a "J"-shaped structure.

[0012] The beneficial effects of the utility model are as follows: the utility model has a simple structure, and the dust removal bag with an arc-shaped structure can filter the incoming flue gas, so that the intercepted impurities remain at the dust removal bag and the sealing plug, so that after the sealing plug is opened, the impurities remaining inside can be quickly discharged to avoid affecting the filtering speed and the passing speed of the flue gas due to excessive internal impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model after removing the sealing frame;

[0016] Figure 3 It is a structural schematic diagram of the processing box in the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the dust removal bag in the utility model.

[0018] Among them, 1. arc-shaped smoke inlet pipe; 2. processing box; 3. smoke outlet pipe; 4. sealing frame; 5. fixing frame; 6. second compression spring; 7. pull plate; 8. first compression spring; 9. handle; 10. sealing plug; 11. slag discharge hole; 12. smoke inlet hole; 13. panel; 14. dust bag. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0021] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a low-energy consumption submerged arc furnace flue gas treatment device of the utility model comprises an arc-shaped smoke inlet pipe 1 connected to the submerged arc furnace, a treatment box 2 is installed at the other end of the arc-shaped smoke inlet pipe 1, a panel 13 is installed inside the treatment box 2, a plurality of smoke inlet holes 12 are arranged on the panel 13, a plurality of slag discharge holes 11 are arranged on both sides of the treatment box 2, a dust removal bag 14 with an arc-shaped structure is installed between the smoke inlet holes 12 and the slag discharge holes 11, both ends of the dust removal bag 14 are opened, a sealing frame 4 is provided on the outside of the treatment box 2, a through hole is provided at the sealing frame 4 corresponding to the slag discharge hole 11, a sealing plug 10 is provided in the through hole, one end of the sealing plug 10 is inserted into the slag discharge hole 11, and the slag discharge hole 11 is sealed.

[0023] In this embodiment, a pull plate 7 is installed on the outer surface of the sealing plug 10 on the same side, a plurality of first compression springs 8 are installed between the pull plate 7 and the processing box 2, a handle 9 is installed on the outer surface of the pull plate 7, and an insulation layer is installed outside the handle 9.

[0024] In this embodiment, a smoke outlet pipe 3 is installed on the bottom surface of the processing box 2, and a connecting flange is installed on one end of the smoke outlet pipe 3 and the arc-shaped smoke inlet pipe 1.

[0025] In this embodiment, a fixed frame 5 is installed on the outside of the processing box 2, and the fixed frame 5 is arranged above the sealing frame 4. A plurality of second compression springs 6 are installed between the fixed frame 5 and the sealing frame 4, and a retreat space is formed between the fixed frame 5 and the sealing frame 4 for the sealing frame 4 to move upward.

[0026] In this embodiment, the sealing plug 10 is made of a high temperature resistant rubber material, and the diameter of the sealing plug 10 matches the inner diameter of the slag discharge hole 11, so that the sealing plug can completely block and seal the slag discharge hole.

[0027] In this embodiment, the inner side surface of the sealing frame 4 is arranged in contact with the outer side surface of the processing box 2, so that the sealing frame can only move up and down along the outer wall surface of the processing box, avoiding rotation and swinging and increasing stability.

[0028] In this embodiment, the arc-shaped smoke inlet pipe is arranged in a "J"-shaped structure, so that the smoke can enter the processing box from top to bottom.

[0029] The flue gas generated by the ore-heat furnace can enter the processing box through the arc-shaped smoke inlet pipe and enter the arc-shaped dust bag along the smoke inlet hole, so that the gas in the flue gas can pass through the filter holes on the dust bag, and the impurities in the flue gas can be intercepted by the dust bag. The impurities after interception can accumulate at the junction of the dust bag and the sealing plug. Therefore, when it needs to be cleaned, the pull plate can be pulled outward by the handle, and the movement of the pull plate drives the sealing plug. After the sealing plug is moved out of the slag discharge hole, the sealing frame and the sealing plug can be pulled outward by the rebound of the second compression spring, so that the slag discharge hole is in an open state. At this time, the internal impurities can be discharged along the arc-shaped dust bag. Of course, manual cleaning is also required to remove the impurities remaining in the dust bag to ensure the filtering effect of the dust bag and the passing efficiency of the flue gas.

[0030] After the above is completed, the pull plate can be pulled downward, and the movement of the pull plate drives the sealing frame. After the sealing frame moves to a suitable position, the sealing plug can be inserted into the slag discharge hole again, thereby avoiding the discharge of internal smoke.

[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A low energy consumption submerged arc furnace flue gas treatment device, characterized in that: The invention comprises an arc-shaped smoke inlet pipe (1) connected to a mineral heating furnace, wherein a treatment box (2) is installed at the other end of the arc-shaped smoke inlet pipe (1), a panel (13) is installed inside the treatment box (2), a plurality of smoke inlet holes (12) are arranged on the panel (13), a plurality of slag discharge holes (11) are arranged on both sides of the treatment box (2), a dust removal bag (14) with an arc-shaped structure is installed between the smoke inlet holes (12) and the slag discharge holes (11), both ends of the dust removal bag (14) are opened, a sealing frame (4) is sleeved on the outside of the treatment box (2), a through hole is arranged in the sealing frame (4) at a position corresponding to the slag discharge hole (11), a sealing plug (10) is arranged in the through hole, one end of the sealing plug (10) is inserted into the slag discharge hole (11), and the slag discharge hole (11) is sealed.

2. The low-energy consumption submerged arc furnace flue gas treatment device according to claim 1 is characterized in that: A pull plate (7) is installed on the outer side of the sealing plug (10) on the same side, a plurality of first compression springs (8) are installed between the pull plate (7) and the processing box (2), a handle (9) is installed on the outer side of the pull plate (7), and a heat insulation layer is installed outside the handle (9).

3. The low-energy consumption submerged arc furnace flue gas treatment device according to claim 1 is characterized in that: A smoke outlet pipe (3) is installed on the bottom surface of the processing box (2), and a connecting flange is installed on one end of the smoke outlet pipe (3) and the arc-shaped smoke inlet pipe (1).

4. The low-energy consumption submerged arc furnace flue gas treatment device according to claim 1 is characterized in that: A fixed frame (5) is installed outside the processing box (2), and the fixed frame (5) is arranged above the sealing frame (4). A plurality of second compression springs (6) are installed between the fixed frame (5) and the sealing frame (4), and a retreat space is formed between the fixed frame (5) and the sealing frame (4) for the sealing frame (4) to move upward.

5. The low-energy consumption submerged arc furnace flue gas treatment device according to claim 1 is characterized in that: The sealing plug (10) is made of a high temperature resistant rubber material, and the diameter of the sealing plug (10) matches the inner diameter of the slag discharge hole (11).

6. The low-energy consumption submerged arc furnace flue gas treatment device according to claim 1 is characterized in that: The inner side surface of the sealing frame (4) is arranged in contact with the outer side surface of the processing box (2).

7. The low-energy consumption submerged arc furnace flue gas treatment device according to claim 1 is characterized in that: The arc-shaped smoke inlet pipe (1) is arranged in a "J"-shaped structure.

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