Direct current arc furnace exhaust gas cooling tower

Abstract

The utility model discloses a direct current smelting furnace tail gas cooling tower, including the cooling tower main part, the upper end intercommunication of cooling tower main part has the sheltering cover, the upper end mounting of sheltering cover has the annular pipe, the top of annular pipe is connected with the absorption pump through the conveying pipe, the discharge pipe intercommunication of absorption pump has the water storage tank. The utility model discloses through the cooperation of sheltering cover, annular pipe and absorption pump, can effectively collect the water mist that cooling tower main part discharges tail gas carried, this design can recycle the moisture that will dissipate to the atmosphere to the water storage tank, reduced the waste of water resources, improved the utilization of water resources, the demister, separation net board and sediment layer that set up in the water storage tank constitute a more complete water quality purification system, and the demister can further remove the tiny droplet in the water mist, the separation net board can intercept larger particle impurities, and the sediment layer lets the tiny impurity deposit to the bottom, thereby making the recovered water get preliminary purification.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, specifically a DC submerged arc furnace tail gas cooling tower. Background Technology

[0002] In the industrial production process of DC submerged arc furnaces, the effective treatment and cooling of exhaust gas is crucial. The high-temperature exhaust gas generated during the operation of DC submerged arc furnaces needs to be cooled by cooling towers to meet the standards for subsequent exhaust gas purification and emission. However, existing DC submerged arc furnace exhaust gas cooling towers have a serious water mist backflow problem in actual operation, which brings many adverse effects to production. Utility Model Content

[0003] The purpose of this utility model is to provide a DC submerged arc furnace tail gas cooling tower to solve the problems of low water mist recovery efficiency in the existing technology, achieve efficient water mist recovery, save water resources, and protect the environment.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a DC submerged arc furnace tail gas cooling tower, comprising a cooling tower body, an upper end of which is connected to a shield, an upper end of which is installed with an annular pipe, the top of which is connected to an absorption pump via a conveying pipe, the discharge pipe of which is connected to a water storage tank, a demister fixedly installed inside the water storage tank, a separation mesh plate snapped onto the bottom of the demister, a sedimentation layer additionally installed at the bottom of the inner cavity of the water storage tank, and an overflow pipe connected to the top of the right side of the water storage tank.

[0005] As a preferred embodiment, a control valve is movably mounted on one end of the discharge pipe of the absorption pump, and one end of the discharge pipe is connected to the upper right side of the demister.

[0006] As a preferred embodiment, a sealing cover is installed on the top of the water storage tank, and a sealing gasket is adhered to the bottom of the sealing cover, with the diameter of the sealing gasket being the same as the inner diameter of the water storage tank.

[0007] As a preferred embodiment, a positioning plate is fixedly installed in the middle of the annular pipe, and a first bracket is welded to the top of the positioning plate. The bent end of the first bracket is connected to the surface of the upper end of the cooling tower body.

[0008] As a preferred embodiment, a second bracket is snap-fitted onto the surface of the absorption pump, and the lower end of the second bracket is connected to the back of the water storage tank by bolts.

[0009] As a preferred embodiment, a water distribution pipe is fixedly installed above the inner cavity of the cooling tower body, and spray heads are arranged at equal intervals at the bottom of the water distribution pipe.

[0010] As a preferred embodiment, guide plates are symmetrically installed on both the front and rear sides of the lower part of the water storage tank cavity, and the guide plates are located below the demister.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, through the combination of a shield, annular pipe, and absorption pump, can effectively collect water mist carried in the exhaust gas discharged from the cooling tower. This design can recover water that would otherwise be lost to the atmosphere into the water storage tank, reducing water waste and improving water utilization. The demister, separation screen, and sedimentation layer installed in the water storage tank constitute a relatively complete water purification system. The demister can further remove tiny droplets from the water mist; the separation screen can intercept larger particulate impurities; and the sedimentation layer allows fine impurities to settle to the bottom, thereby achieving preliminary purification of the recovered water.

[0013] 2. This utility model can precisely adjust the water mist flow rate entering the demister through a control valve. Under different operating conditions, such as different exhaust gas production or changes in water mist content, it can be flexibly adjusted according to actual needs. The control valve allows for easy shut-off of water flow when maintaining and repairing equipment such as the demister and water tank, avoiding water leakage and unnecessary losses. Simply closing the control valve allows for safe inspection, cleaning, or replacement of relevant components, reducing the difficulty and risk of maintenance work. Attached Figure Description

[0014] Figure 1 This is a first-view perspective structural perspective view of the present invention;

[0015] Figure 2 This is a second-view perspective structural perspective view of the present invention;

[0016] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0017] Figure 4 This is a schematic diagram of the internal structure of the water storage tank of this utility model.

[0018] In the diagram: 1. Cooling tower body; 2. Shielding cover; 3. Circular pipe; 4. Water storage tank; 5. Absorption pump; 6. Control valve; 7. Demister; 8. Separation mesh plate; 9. Sealing cover plate; 10. Sealing gasket; 11. First support; 12. Second support; 13. Water distribution pipe; 14. Spray head; 15. Overflow pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Example

[0021] Please see Figure 1 As shown, this utility model provides a DC submerged arc furnace tail gas cooling tower, including a cooling tower body 1. The upper end of the cooling tower body 1 is connected to a shield 2. An annular pipe 3 is installed at the upper end of the shield 2. The top of the annular pipe 3 is connected to an absorption pump 5 through a conveying pipe. The discharge pipe of the absorption pump 5 is connected to a water storage tank 4. A demister 7 is fixedly installed inside the water storage tank 4. A separation screen plate 8 is snapped onto the bottom of the demister 7. A sedimentation layer is also installed at the bottom of the inner cavity of the water storage tank 4. An overflow pipe 15 is connected to the top of the right side of the water storage tank 4.

[0022] This technical solution, through the cooperation of the shield 2, the annular pipe 3, and the absorption pump 5, can effectively collect the water mist carried in the exhaust gas discharged from the main body of the cooling tower 1. This design can recover the water that would otherwise be lost to the atmosphere into the water storage tank 4, reducing water waste and improving water utilization. The demister 7, the separation screen 8, and the sedimentation layer installed in the water storage tank 4 constitute a relatively complete water purification system. The demister 7 can further remove tiny droplets in the water mist; the separation screen 8 can intercept larger particulate impurities; and the sedimentation layer allows fine impurities to settle to the bottom, thereby achieving preliminary purification of the recovered water. Example

[0023] Based on Embodiment 1, this utility model is as follows: Figure 3 As shown, a control valve 6 is movably installed on one end of the discharge pipe of the absorption pump 5, and one end of the discharge pipe is connected to the upper right of the demister 7; a sealing cover 9 is installed on the top of the water storage tank 4, and a sealing gasket 10 is adhered to the bottom of the sealing cover 9, and the diameter of the sealing gasket 10 is the same as the inner diameter of the water storage tank 4.

[0024] Adopting such Figure 1The technical solution shown allows the control valve 6 to precisely adjust the water mist flow rate entering the demister 7. Under different operating conditions, such as different exhaust gas production or changes in water mist content, it can be flexibly adjusted according to actual needs. The setting of the control valve 6 makes it easy to cut off the water flow when maintaining and repairing equipment such as the demister 7 and water tank 4, avoiding water leakage and unnecessary losses. Simply closing the control valve 6 allows for safe inspection, cleaning, or replacement of related components, reducing the difficulty and risk of maintenance work.

[0025] Secondly, in the technical solution, a positioning plate is fixedly installed in the middle of the annular pipe 3, and a first bracket 11 is welded to the top of the positioning plate. The bent end of the first bracket 11 is connected to the surface of the upper end of the cooling tower body 1. A second bracket 12 is snapped onto the surface of the absorption pump 5, and the lower end of the second bracket 12 is connected to the back of the water storage tank 4 by bolts.

[0026] Its adoption is as follows Figure 1 The technical solution shown allows the first bracket 11 and the second bracket 12 to reinforce and support one side of the annular pipe 3 and the absorption pump 5, respectively, ensuring the stability of the annular pipe 3 after it is installed above the shield 2. In addition, the absorption pump 5 can also be reinforced by the second bracket 12, ensuring stability when delivering water mist. Example

[0027] This utility model is as follows Figures 1-4 As shown, a water distribution pipe 13 is fixedly installed above the inner cavity of the cooling tower body 1, and spray nozzles 14 are arranged at equal intervals at the bottom of the water distribution pipe 13; guide plates are symmetrically installed on the front and rear sides below the inner cavity of the water storage tank 4, and the guide plates are located below the demister 7.

[0028] Using the above technical solution, the guide plate at the bottom of the demister 7 can be formed into a trumpet shape so that the water separated by the demister 7 can be discharged downwards, and the demister 7 can fully contact the water mist without any separation residue inside.

[0029] The working principle of this utility model is as follows: After initial cooling, the exhaust gas carrying a large amount of water mist continues to rise and reaches the upper end of the cooling tower body 1. At this time, the shield 2 connected to the upper end plays a blocking and guiding role, so that the misty exhaust gas can be better collected. The absorption pump 5 is connected to the annular pipe 3 through the delivery pipe. After the absorption pump 5 is started, it will generate suction and suck the water mist collected by the annular pipe 3 into the delivery pipe. The control valve 6 on the discharge pipe of the absorption pump 5 can adjust the water mist delivery flow according to actual needs. The discharge pipe delivers the water mist to the upper right of the demister 7 in the water storage tank 4. After the water mist enters the demister 7, the demister 7 uses its own structure and principle to remove the tiny droplets, so that most of the water mist condenses into larger water droplets. The water after demistering drips down and reaches the separation screen plate 8 at the bottom of the demister 7. The separation screen plate 8 will intercept larger particulate impurities in the water and further purify the water quality. The fine impurities will gradually settle to the bottom in the sedimentation layer. The overflow pipe 15 connected to the top right will discharge the excess water to ensure the safe operation of the water storage tank 4.

[0030] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0031] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A DC submerged arc furnace tail gas cooling tower, comprising a cooling tower body (1), characterized in that: The upper end of the cooling tower body (1) is connected to a shield (2), and the upper end of the shield (2) is equipped with an annular pipe (3). The top of the annular pipe (3) is connected to an absorption pump (5) through a conveying pipe. The discharge pipe of the absorption pump (5) is connected to a water storage tank (4). A demister (7) is fixedly installed inside the water storage tank (4). A separation mesh plate (8) is snapped onto the bottom of the demister (7). A sedimentation layer is also installed at the bottom of the inner cavity of the water storage tank (4). An overflow pipe (15) is connected to the top of the right side of the water storage tank (4).

2. The DC-DC submerged arc furnace tail gas cooling tower according to claim 1, characterized in that: A control valve (6) is movably installed on one end of the discharge pipe of the absorption pump (5), and one end of the discharge pipe is connected to the upper right of the demister (7).

3. The DC-DC submerged arc furnace tail gas cooling tower according to claim 1, characterized in that: A sealing cover (9) is installed on the top of the water storage tank (4), and a sealing gasket (10) is glued to the bottom of the sealing cover (9), and the diameter of the sealing gasket (10) is the same as the inner diameter of the water storage tank (4).

4. The DC-DC submerged arc furnace tail gas cooling tower according to claim 1, characterized in that: A positioning plate is fixedly installed in the middle of the annular pipe (3), and a first bracket (11) is welded to the top of the positioning plate. The bent end of the first bracket (11) is connected to the surface of the upper end of the cooling tower body (1).

5. A DC submerged arc furnace tail gas cooling tower according to claim 1, characterized in that: The surface of the absorption pump (5) is fitted with a second bracket (12), and the lower end of the second bracket (12) is connected to the back of the water storage tank (4) by bolts.

6. A DC submerged arc furnace tail gas cooling tower according to claim 1, characterized in that: A water distribution pipe (13) is fixedly installed above the inner cavity of the cooling tower body (1), and spray nozzles (14) are arranged at equal intervals at the bottom of the water distribution pipe (13).

7. A DC submerged arc furnace tail gas cooling tower according to claim 1, characterized in that: Guide plates are symmetrically installed on the front and rear sides of the inner cavity of the water storage tank (4), and the guide plates are located below the demister (7).

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