Shaft furnace waste heat circulating device

Abstract

The utility model relates to the technical field of shaft furnaces, in particular to a waste heat circulating device of a shaft furnace. According to the technical scheme, the vertical furnace comprises a vertical furnace body, a heating box and a circulating box body, a workbench is fixed to the lower surface of the vertical furnace body, a supporting plate is fixed to the outer end face of one side of the workbench, the outer end face of one side of the heating box communicates with a water inlet pipe, the outer surface of the water inlet pipe is in threaded connection with a water inlet valve, and the heating box is fixed to the upper surface of the supporting plate; the outer end face of one side of the circulation box body communicates with a water return pipe, the water return pipe communicates with the heating box, a machine box is fixed to the upper surface of the shaft furnace body, through grooves are formed in the lower surface of the machine box and the upper surface of the shaft furnace body, the outer end faces of the two sides of the shaft furnace body communicate with absorption covers correspondingly, and the outer end faces of one sides of the absorption covers communicate with connecting pipes. The outer end face of one side of the connecting pipe communicates with a fixing cover, and the fixing cover communicates with the machine box. According to the utility model, process circulating water and steam of the shaft furnace body can be recycled, so that water resources are effectively utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical furnaces, in particular to a vertical furnace waste heat circulation device. Background Art

[0002] In order to adapt to the current situation, the ferroalloy industry is rapidly moving towards large-scale equipment and comprehensive resource utilization. New technologies and methods for energy saving and consumption reduction are rapidly applied in the industry, and ferroalloy enterprises are looking inward to tap potential and increase efficiency. For winter heating in our company, we use the slag water from the submerged arc furnace after natural precipitation, and use water pumps to force circulation to various heating points in the factory area.

[0003] The prior art discloses a waste heat recovery device for a pelletizing vertical furnace of CN217358103U, comprising a flue gas box, a smoke inlet being provided on the bottom surface of the flue gas box, a waste heat recovery mechanism being provided on the front side of the flue gas box, and the waste heat recovery mechanism comprising a water inlet pipe being located at the rear side of the flue gas box; a waste heat recovery mechanism being provided: that is, a plurality of heat exchange tubes being provided in the flue gas box, and a water source flowing through the heat exchange tubes through the water inlet pipe and flowing into the water tank, when the high-temperature flue gas flows in the flue gas box, the heat exchange tubes are heated, and the temperature in the heat exchange tubes is taken away by the water body, thereby recovering the waste heat of the flue gas, and a plurality of heat exchange tubes are provided before the flue gas dust removal, thereby improving the recovery efficiency of the waste heat of the flue gas; a dust removal mechanism being provided in the smoke exhaust box: on the one hand, the dust filter being provided can prevent the smoke from being discharged into the atmosphere to cause pollution; on the other hand, the dust filter can be easily disassembled and cleaned.

[0004] The temperature of the slag flushing water in the submerged arc furnace was unstable and low, and the heating effect was poor. As a last resort, electric heaters were added to each post in the production area and each dormitory in the living area for heating. There were also safety issues such as fire and electric shock hazards caused by using electric heaters. The saturated steam generated by the vertical furnace drum water beam system was discharged in vain. Utility Model Content

[0005] The purpose of the utility model is to provide a vertical furnace waste heat circulation device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vertical furnace waste heat circulation device, comprising a vertical furnace body, a heating box and a circulation box body, a workbench is fixed on the lower surface of the vertical furnace body, and a support plate is fixed on one side outer end surface of the workbench, the heating box is fixed on the upper surface of the support plate, a return pipe is connected to one side outer end surface of the circulation box body, and the return pipe is connected to the heating box, a machine box is fixed on the upper surface of the vertical furnace body, and through grooves are provided on the lower surface of the machine box and the upper surface of the vertical furnace body, both side outer end surfaces of the vertical furnace body are connected to absorption covers, and one side outer end surface of the absorption cover is connected to a connecting pipe.

[0007] When using a vertical furnace waste heat circulation device in the technical solution, the absorption cover sucks out the waste heat gas under the action of the power device, and then sends the waste heat gas into the fixed cover through the connecting pipe, and then enters the chassis through the fixed cover. The waste heat gas can first preheat the processed materials inside the chassis to reduce the material heating time. The circulating water inside the heating box can enter the circulation box body through the return pipe. The circulation box body can recycle the circulating water, and the vertical furnace process circulating water and steam can be recycled to effectively utilize water resources.

[0008] Preferably, the upper surface of the chassis is hingedly connected with a sealing cover, and a handle is fixed on the upper surface of the sealing cover. By arranging the handle on the upper surface of the sealing cover, it is convenient to hold the handle to open or close the sealing cover.

[0009] Preferably, one side of the connecting pipe is connected to a fixed cover on its outer end surface, and the fixed cover is connected to the chassis. By arranging the fixed cover on one side of the connecting pipe, it is convenient to send the waste heat into the chassis.

[0010] Preferably, a water inlet pipe is connected to one side of the outer end surface of the heating box, and a water inlet valve is threadedly connected to the outer surface of the water inlet pipe, and an air inlet pipe is connected to one side of the outer end surface of the heating box, and the air inlet pipe is connected to the vertical furnace body, and an air inlet valve is threadedly connected to the outer surface of the air inlet pipe. By arranging the water inlet pipe on one side of the heating box, it is convenient to pour water into the interior of the heating box through the water inlet pipe.

[0011] Preferably, the lower surface of the workbench is fixed with supporting legs, and the inner wall of the supporting legs is fixed with a bottom plate, and the bottom plate is fixed to the lower surface of the circulation box body. By arranging the supporting legs and the bottom plate on the lower surface of the workbench, it is convenient to support the circulation box body.

[0012] Preferably, an outer plate is fixed to the inner wall of the through slot, and an inner plate is movably inserted into the outer end surface of one side of the outer plate. By arranging the outer plate and the inner plate on the inner wall of the through slot, it is convenient to open and close the through slot.

[0013] Preferably, a drain pipe is connected to one side of the outer end surface of the circulation box body, and a drain valve is threadedly connected to the outer surface of the drain pipe. By arranging the drain pipe on one side of the circulation box body, it is convenient to drain liquid.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model achieves the effect of recycling and utilizing the circulating water and steam of the vertical furnace process and effectively utilizing water resources by arranging an absorption hood, a heating box and a return pipe. The absorption hood absorbs the waste heat gas under the action of the power device, and then sends the waste heat gas into the fixed hood through the connecting pipe, and then enters the chassis through the fixed hood. The waste heat gas can first preheat the processed materials in the chassis to reduce the heating time of the materials. The circulating water in the heating box can enter the circulation box body through the return pipe, and the circulation box body can recycle the circulating water. The circulating water and steam of the vertical furnace process can be recycled and utilized, and water resources can be effectively utilized.

[0016] 2. The utility model achieves the effect of facilitating the opening and closing of the vertical furnace body by arranging the vertical furnace body, the outer plate and the inner plate. The processed materials are first preheated inside the chassis. After the preheating is completed, the outer plate is opened. The outer plate drives the inner plate to move under the action of the power device. The inner plate is retracted, and the through slot can be opened. The processed materials can enter the vertical furnace body through the through slot. The hot air generated inside the heating box enters the vertical furnace body through the air inlet pipe. The processed materials are heated by contact with the hot air, which is convenient for heating the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is an enlarged structural schematic diagram of the heating box of the utility model;

[0019] Figure 3 It is an enlarged structural schematic diagram of the vertical furnace body of the utility model;

[0020] Figure 4 It is an enlarged structural schematic diagram of the circulation box body of the utility model.

[0021] In the figure: 1. Sealing cover; 2. Handle; 3. Fixed cover; 4. Connecting pipe; 5. Absorption cover; 6. Chassis; 7. Vertical furnace body; 8. Heating box; 9. Water inlet valve; 10. Water inlet pipe; 11. Workbench; 12. Drain pipe; 13. Support leg; 14. Circulation box body; 15. Bottom plate; 16. Air inlet valve; 17. Air inlet pipe; 18. Support plate; 19. Outer plate; 20. Inner plate; 21. Through groove; 22. Return pipe; 23. Drain valve. DETAILED DESCRIPTION

[0022] 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.

[0023] Embodiment 1

[0024] See also Figures 1 to 4 The utility model provides an embodiment: a vertical furnace waste heat circulation device, including a vertical furnace body 7, a heating box 8 and a circulation box body 14, a workbench 11 is fixed to the lower surface of the vertical furnace body 7, and a support plate 18 is fixed to the outer end surface of one side of the workbench 11, a support leg 13 is fixed to the lower surface of the workbench 11, and a bottom plate 15 is fixed to the inner wall of the support leg 13, and the bottom plate 15 is fixed to the lower surface of the circulation box body 14, and a water inlet pipe 10 is connected to the outer end surface of one side of the heating box 8, and the outer surface of the water inlet pipe 10 is threadedly connected to a water inlet valve 9 The heating box 8 is fixed on the upper surface of the support plate 18, the outer end surface of one side of the circulation box body 14 is connected with a return pipe 22, and the return pipe 22 is connected to the heating box 8, the outer end surface of one side of the heating box 8 is connected with an air intake pipe 17, and the air intake pipe 17 is connected to the vertical furnace body 7, the outer surface of the air intake pipe 17 is threadedly connected with an air intake valve 16, the outer end surfaces of both sides of the vertical furnace body 7 are connected with absorption covers 5, and the outer end surface of one side of the absorption cover 5 is connected with a connecting pipe 4, the outer end surface of one side of the connecting pipe 4 is connected with a fixed cover 3, and the fixed cover 3 is connected to the chassis 6.

[0025] Of course, as is well known to those skilled in the art, the absorption hood 5, the vertical furnace body 7, the heating box 8 and the outer plate 19 of the utility model also need to be provided with a power device to enable them to work normally, and as is well known to those skilled in the art, the provision of the power is commonplace, and they all belong to conventional means or common knowledge, and will not be elaborated here, and those skilled in the art can make any optional selections according to their needs or convenience.

[0026] In a vertical furnace waste heat circulation device based on Example 1, the absorption hood 5 sucks out the waste heat gas under the action of the power device, and then sends the waste heat gas into the fixed hood 3 through the connecting pipe 4, and then enters the chassis 6 through the fixed hood 3. The waste heat gas can first preheat the processed materials inside the chassis 6 to reduce the material heating time. The circulating water inside the heating box 8 can enter the circulation box body 14 through the return pipe 22. The circulation box body 14 can recycle the circulating water, and the process circulating water and steam of the vertical furnace body 7 can be recycled to effectively utilize water resources.

[0027] Embodiment 2

[0028] like Figure 1-Figure 4As shown, a vertical furnace waste heat circulation device proposed by the utility model, compared with the first embodiment, this embodiment also includes a vertical furnace body 7, a heating box 8 and a circulation box body 14, one side outer end surface of the circulation box body 14 is connected with a drain pipe 12, and the outer surface of the drain pipe 12 is threadedly connected with a drain valve 23, the upper surface of the vertical furnace body 7 is fixed with a chassis 6, and the lower surface of the chassis 6 and the upper surface of the vertical furnace body 7 are provided with a through groove 21, the inner wall of the through groove 21 is fixed with an outer plate 19, and the outer end surface of one side of the outer plate 19 is movably connected with an inner plate 20, the upper surface of the chassis 6 is hingedly connected with a sealing cover 1, and the upper surface of the sealing cover 1 is fixed with a handle 2.

[0029] In this embodiment, the processed material is first preheated inside the chassis 6. After the preheating is completed, the outer plate 19 is opened. The outer plate 19 drives the inner plate 20 to move under the action of the power device. The inner plate 20 is retracted and the through groove 21 can be opened. The processed material can pass through the through groove 21 to enter the interior of the vertical furnace body 7. The hot air generated inside the heating box 8 enters the vertical furnace body 7 through the air inlet pipe 17. The processed material is heated by contact with the hot air, which is convenient for heating the material.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A shaft furnace waste heat circulation device, comprising a shaft furnace body (7), a heating box (8) and a circulation box body (14), characterized in that: A workbench (11) is fixed on the lower surface of the vertical furnace body (7), and a support plate (18) is fixed on one side outer end surface of the workbench (11). The heating box (8) is fixed on the upper surface of the support plate (18). A return pipe (22) is connected to one side outer end surface of the circulation box body (14), and the return pipe (22) is connected to the heating box (8). A machine box (6) is fixed on the upper surface of the vertical furnace body (7), and a through groove (21) is provided on the lower surface of the machine box (6) and the upper surface of the vertical furnace body (7). Both side outer end surfaces of the vertical furnace body (7) are connected to an absorption cover (5), and one side outer end surface of the absorption cover (5) is connected to a connecting pipe (4).

2. A shaft furnace waste heat circulation device according to claim 1, characterized in that: The upper surface of the chassis (6) is hingedly connected to a sealing cover (1), and a handle (2) is fixed to the upper surface of the sealing cover (1).

3. A shaft furnace waste heat circulation device according to claim 1, characterized in that: One side outer end surface of the connecting pipe (4) is connected to a fixed cover (3), and the fixed cover (3) is connected to the chassis (6).

4. A shaft furnace waste heat circulation device according to claim 1, characterized in that: One side outer end surface of the heating box (8) is connected to a water inlet pipe (10), and the outer surface of the water inlet pipe (10) is threadedly connected to a water inlet valve (9); one side outer end surface of the heating box (8) is connected to an air inlet pipe (17), and the air inlet pipe (17) is connected to the vertical furnace body (7), and the outer surface of the air inlet pipe (17) is threadedly connected to an air inlet valve (16).

5. The shaft furnace waste heat circulation device according to claim 1, characterized in that: A support leg (13) is fixed to the lower surface of the workbench (11), and a bottom plate (15) is fixed to the inner wall of the support leg (13), and the bottom plate (15) is fixed to the lower surface of the circulation box body (14).

6. A shaft furnace waste heat circulation device according to claim 1, characterized in that: An outer plate (19) is fixed to the inner wall of the through groove (21), and an inner plate (20) is movably inserted into an outer end surface of one side of the outer plate (19).

7. The shaft furnace waste heat circulation device according to claim 1, characterized in that: One side outer end surface of the circulation box body (14) is connected to a drain pipe (12), and the outer surface of the drain pipe (12) is threadedly connected to a drain valve (23).

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