Waste heat recovery device for metal smelting production

Abstract

The utility model discloses a waste heat recovery device for metal smelting production, which comprises a box body, a flue gas pipe is arranged on the bottom surface of the box body in a penetrating manner, a heat absorption block is arranged on the outer side surface of the flue gas pipe in the box body, and a filter box is arranged above the box body. According to the utility model, cold water is introduced into the box body through the water inlet pipe, high-temperature flue gas generated in the metal smelting process enters the flue gas pipe, heat in the flue gas can be absorbed through the heat absorption block on the outer side surface of the flue gas pipe, and water in the box body can be heated after the heat is absorbed; according to the high-temperature flue gas recycling device, heat in high-temperature flue gas can be recycled, the used flue gas enters the filter box, the used flue gas can be filtered through a first filter screen and an activated carbon filter screen in the filter box, impurities and the flue gas are prevented from being discharged into air together, and therefore the surrounding environment can be protected; and the environmental protection property of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal smelting, in particular to a waste heat recovery device for metal smelting production. Background Art

[0002] Metal smelting is the process of changing metal from a combined state to a free state. Metal oxides are reduced by reducing agents such as carbon, carbon monoxide, and hydrogen at high temperatures to obtain metal elements. During the metal smelting process, a large amount of high-temperature flue gas is generated. Therefore, a waste heat recovery device is needed to recover the heat in the high-temperature flue gas.

[0003] The existing Chinese patent with the announcement number CN216115462U discloses a waste heat recovery device for rare earth metal smelting and processing, and the key points of its technical solution are: comprising a flue gas pipe, the outside of the flue gas pipe is fixedly connected to a heat absorbing water tank, the inside of the heat absorbing water tank is fixedly connected to a heat absorbing pipe, the heat absorbing water tank is fixedly connected to a water outlet pipe, one end of the heat absorbing pipe is fixedly connected to a connecting pipe, the inside of the connecting pipe is connected to a connecting cover by a thread, the inside of the connecting cover is fixedly connected to a water inlet pipe, the inside of the connecting pipe is bonded with a sealing ring, and the outside of the connecting pipe is fixedly connected to a limiting block. The utility model adds structures such as a heat absorbing pipe and a heat preservation tube to the heat absorbing water tank, so that when in use, the heat absorbing pipe can directly contact the flue gas inside the flue gas pipe, and the water flow can preheat the water through the heat absorbing pipe before entering the heat absorbing water tank, thereby effectively improving the heat absorption efficiency of the device.

[0004] The above-mentioned existing technical solutions have the following defects: although the above-mentioned technical solutions can effectively improve the heat absorption efficiency of the device, the above-mentioned technical solutions lack a flue gas treatment mechanism to treat impurities in the flue gas, and the flue gas after use is directly discharged, which is easy to cause pollution to the surrounding environment, thereby reducing its environmental protection. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a waste heat recovery device for metal smelting production, which has the advantage of being able to filter the flue gas after utilization, thereby preventing impurities and flue gas from being discharged into the air together, thereby facilitating the protection of the surrounding environment, thereby solving the problems in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a waste heat recovery device for metal smelting production, comprising a box body, a flue gas pipe is penetrated through the bottom surface of the box body, and the outer surface of the flue gas pipe is located inside the box body and a heat absorption block is provided, a filter box is provided above the box body, and a connecting block is provided between the filter box and the box body, one end of the flue gas pipe penetrates the bottom surface of the filter box, a first filter screen is provided inside the filter box, and an activated carbon filter screen is provided above the first filter screen, a water inlet pipe is provided on one side surface of the box body, motors are installed on both sides of the top surface of the box body, and the output end of the motor penetrates the box body and is fixedly connected to a rotating rod, the rotating rod is provided with a stirring blade, a drain pipe is provided on one side surface of the box body, and a valve is installed on the drain pipe.

[0009] Preferably, legs are provided on both sides of the bottom surface of the box body, and a plurality of legs are provided, and the plurality of legs are evenly distributed in pairs on both sides of the bottom surface of the box body.

[0010] Preferably, a plurality of the heat absorbing blocks are provided, and the plurality of heat absorbing blocks are evenly distributed on the outer surface of the flue pipe.

[0011] Preferably, a movable plate is fixedly connected to the front end surface of the filter box by screws.

[0012] Preferably, a smoke exhaust port is provided at a middle position of the top surface of the filter box.

[0013] Preferably, the connecting block is fixedly connected to the filter box and the box body respectively by bolts.

[0014] Preferably, the legs are fixedly welded to the box body.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a waste heat recovery device for metal smelting production, which has the following beneficial effects:

[0017] (1) In the present invention, cold water is introduced into the box through the water inlet pipe, and the high-temperature flue gas generated during the metal smelting process enters the flue pipe. The heat in the flue gas can be absorbed by the heat-absorbing block on the outer surface of the flue pipe. After absorption, the water in the box can be heated, so that the heat in the high-temperature flue gas can be recycled. The recycled flue gas enters the filter box. The recycled flue gas can be filtered by the first filter screen and the activated carbon filter screen in the filter box to prevent impurities and flue gas from being discharged into the air together, thereby protecting the surrounding environment and improving the environmental protection of the device.

[0018] (2) In the utility model, the motors on both sides of the top surface of the box body drive the rotating rod to rotate, so that the stirring blades on the rotating rod rotate, and the cold water in the box body is stirred, which increases the fluidity of the cold water in the box body and allows the cold water to fully contact the heat released by the heat absorbing block, thereby improving the utilization rate of the heat in the flue gas, facilitating the heating of the cold water in the box body, and improving its use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 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.

[0020] Figure 1 It is a structural schematic diagram of a waste heat recovery device for metal smelting production proposed by the utility model;

[0021] Figure 2 This is a front view of a waste heat recovery device for metal smelting production proposed by the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of a flue gas pipe of a waste heat recovery device for metal smelting production proposed by the utility model;

[0023] Figure 4 The utility model discloses a filter box structure schematic diagram of a waste heat recovery device for metal smelting production.

[0024] Legend:

[0025] 1. Box body; 2. Water inlet pipe; 3. Heat absorption block; 4. Smoke pipe; 5. Activated carbon filter; 6. Filter box; 7. Smoke outlet; 8. First filter; 9. Connecting block; 10. Motor; 11. Stirring blade; 12. Rotating rod; 13. Drain pipe; 14. Valve; 15. Leg; 16. Movable plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Please refer to Figure 1-4 A waste heat recovery device for metal smelting production includes a box body 1, a flue gas pipe 4 is penetrated through the bottom surface of the box body 1, and the outer surface of the flue gas pipe 4 is located inside the box body 1 and is provided with a heat absorption block 3, a filter box 6 is arranged above the box body 1, and a connecting block 9 is arranged between the filter box 6 and the box body 1, one end of the flue gas pipe 4 penetrates the bottom surface of the filter box 6, a first filter screen 8 is arranged inside the filter box 6, and an activated carbon filter screen 5 is arranged above the first filter screen 8, a water inlet pipe 2 is arranged on one side surface of the box body 1, motors 10 are installed on both sides of the top surface of the box body 1, and the output end of the motor 10 penetrates the box body 1 and is fixedly connected to a rotating rod 12, a stirring blade 11 is arranged on the rotating rod 12, and a drainage pipe 2 is arranged on one side surface of the box body 1 Pipe 13, and a valve 14 is installed on the drain pipe 13, cold water is introduced into the box body 1 through the water inlet pipe 2, and the high-temperature flue gas generated in the metal smelting process enters the flue gas pipe 4. By using the heat absorption block 3 on the outer surface of the flue gas pipe 4, the heat in the flue gas can be absorbed. After absorption, the water in the box body 1 can be heated, so that the heat in the high-temperature flue gas can be recycled, and the utilized flue gas enters the filter box 6. By using the first filter screen 5 and the activated carbon filter screen 8 in the filter box 6, the utilized flue gas can be filtered to prevent impurities and flue gas from being discharged into the air together, thereby protecting the surrounding environment, which is beneficial to improving the environmental protection of the device.

[0029] In one embodiment, legs 15 are provided on both sides of the bottom surface of the box body 1. There are a plurality of legs 15 in total, and the legs 15 are evenly distributed in pairs on both sides of the bottom surface of the box body 1. The legs 15 support the box body 1, which is beneficial to improving the stability of the box body 1.

[0030] In one embodiment, a plurality of heat absorbing blocks 3 are provided, and the plurality of heat absorbing blocks 3 are evenly distributed on the outer surface of the flue gas pipe 4. By using the plurality of heat absorbing blocks 3, the heat in the flue gas in the flue gas pipe 4 can be absorbed, thereby heating the water in the box body 1.

[0031] In one embodiment, the front end surface of the filter box 6 is fixedly connected with a movable plate 16 by screws, wherein the first filter screen 8 and the activated carbon filter screen 5 in the filter box 6 can be disassembled and replaced by loosening the screws and removing the movable plate 16, which is beneficial to improving its practicality.

[0032] In one embodiment, a smoke exhaust port 7 is provided at the middle position of the top surface of the filter box 6, wherein the smoke after filtering can be discharged through the use of the smoke exhaust port 7.

[0033] In one embodiment, the connection block 9 is fixedly connected to the filter box 6 and the box body 1 respectively by bolts, wherein the filter box 6 is supported by the connection block 9, which is beneficial to improve the stability of the filter box 6.

[0034] In one embodiment, the legs 15 are fixedly welded to the box body 1 , which can improve the firmness of the legs 15 on the box body 1 and can support the box body 1 .

[0035] In one embodiment, the control panel control circuit can be implemented through simple programming by technicians in this field. It is common knowledge in this field and is only used without modification, so the control method and circuit connection will not be described in detail.

[0036] Working principle:

[0037] When in use, cold water is introduced into the housing 1 through the water inlet pipe 2, and the high-temperature flue gas generated during the metal smelting process enters the flue pipe 4. The heat in the flue gas can be absorbed by the heat absorbing block 3 on the outer surface of the flue pipe 4. After absorption, the water in the housing 1 can be heated, so that the heat in the high-temperature flue gas can be recycled. The utilized flue gas enters the filter box 6. The utilized flue gas can be filtered by the first filter screen 5 and the activated carbon filter screen 8 in the filter box 6 to prevent impurities and flue gas from being discharged into the air together, thereby protecting the surrounding environment, and thus helping to improve the environmental protection of the device. The motor 10 on both sides of the top surface of the housing 1 drives the rotating rod 12 to rotate, so that the stirring blade 11 on the rotating rod 12 rotates, and the cold water in the housing 1 can be stirred, which increases the fluidity of the cold water in the housing 1, and allows the cold water to fully contact the heat released by the heat absorbing block 3, thereby improving the utilization rate of the heat in the flue gas, facilitating the heating of the cold water in the housing 1, and helping to improve its use effect.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A waste heat recovery device for metal smelting production, comprising a housing (1), characterized in that: A flue gas pipe (4) is provided through the bottom surface of the housing (1), and a heat absorbing block (3) is provided on the outer surface of the flue gas pipe (4) located inside the housing (1); a filter box (6) is provided above the housing (1), and a connecting block (9) is provided between the filter box (6) and the housing (1); one end of the flue gas pipe (4) passes through the bottom surface of the filter box (6); a first filter screen (8) is provided inside the filter box (6), and an activated carbon filter screen (5) is provided above the first filter screen (8); a water inlet pipe (2) is provided on one side surface of the housing (1); motors (10) are installed on both sides of the top surface of the housing (1), and the output end of the motor (10) passes through the housing (1) and is fixedly connected to a rotating rod (12); a stirring blade (11) is provided on the rotating rod (12); a drain pipe (13) is provided on one side surface of the housing (1), and a valve (14) is installed on the drain pipe (13).

2. A waste heat recovery device for metal smelting production according to claim 1, characterized in that: Support legs (15) are provided on both sides of the bottom surface of the box body (1), and a plurality of the support legs (15) are provided, and the plurality of support legs (15) are evenly distributed in pairs on both sides of the bottom surface of the box body (1).

3. The waste heat recovery device for metal smelting production according to claim 1, characterized in that: A plurality of the heat absorbing blocks (3) are provided, and the plurality of heat absorbing blocks (3) are evenly distributed on the outer surface of the flue gas pipe (4).

4. The waste heat recovery device for metal smelting production according to claim 1, characterized in that: The front end surface of the filter box (6) is fixedly connected to a movable plate (16) via screws.

5. The waste heat recovery device for metal smelting production according to claim 1, characterized in that: A smoke exhaust port (7) is provided at the middle position of the top surface of the filter box (6).

6. The waste heat recovery device for metal smelting production according to claim 1, characterized in that: The connection block (9) is fixedly connected to the filter box (6) and the box body (1) respectively by bolts.

7. The waste heat recovery device for metal smelting production according to claim 2, characterized in that: The supporting legs (15) are fixedly welded to the box body (1).

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