Hot blast stove waste heat utilization device

Abstract

The utility model relates to the technical field of waste heat utilization, and provides a hot blast stove waste heat utilization device which comprises a filtering box, a preheating sleeve, an air inlet pipe, a filtering assembly, a recycling box, a recycling assembly, a preheating pipe, an exhaust pipe and a heating pipe set. The length of the air inlet pipe is smaller than that of the preheating sleeve, the air inlet pipe is conveniently preheated, the air inlet pipe communicates with the filtering box and the hot blast stove, the filtering assembly is detachably installed in the filtering box, the recycling box is located on one side of the filtering box, a conveying base is arranged between the recycling box and the filtering box, and the recycling assembly is installed in the recycling box. The preheating pipe is fixedly communicated to one side of the recycling box, a recycling pipe is communicated between the heating pipe set and the exhaust pipe, and a first valve and a second valve are arranged on the exhaust pipe and the recycling pipe respectively. By means of the technical scheme, the problem that in the prior art, the utilization efficiency of waste heat is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat utilization, in particular to a waste heat utilization device for a hot blast furnace. Background Art

[0002] Hot blast furnace is a kind of thermal power machine that uses hot blast as medium and carrier to improve the heat utilization rate and thermal working effect. It has become a replacement product for electric heat source and traditional steam power heat source in many industries. The current gas hot blast furnace will generate a lot of hot gas when working, which is not convenient for recycling the hot gas.

[0003] After searching, the utility model with patent publication number CN218348680U discloses a residual heat recycling device for a gas hot blast furnace. By setting a recovery mechanism, a purification box, an activated carbon net and a connecting pipe, the high-temperature hot air of the gas hot blast furnace body enters the purification box through the connecting pipe, and then is purified through the activated carbon net, and then the hot air is pumped into the insulation chamber through the recovery mechanism, so that the gas hot blast furnace body can be insulated and preheated. When the hot air in the insulation chamber is stored to a certain extent, the hot air is allowed to enter the recovery box through the pressure relief valve and the exhaust pipe. At this time, cold water is introduced into the spiral tube, so that the cold water in the spiral tube is converted into hot water through the high-temperature hot air, and then the high-temperature hot air can be further reused. Although it is convenient to recycle the waste heat of the hot blast furnace, it is not convenient to preheat multiple gas paths at the same time when heating the gas. The waste gas from the hot blast furnace is directly discharged after being recovered once, and the utilization efficiency of the waste heat is low. Utility Model Content

[0004] The utility model provides a hot blast stove waste heat utilization device, which solves the problem of low waste heat utilization efficiency in the related technology.

[0005] The technical solution of the utility model is as follows: A hot blast stove waste heat utilization device comprises a filter box, a preheating sleeve, an air intake pipe, a filter assembly, a recovery box, a recovery assembly, a preheating pipe, an exhaust pipe and a heating pipe group;

[0006] The preheating sleeve is fixedly connected to one side of the filter box;

[0007] The air inlet pipe is arranged in the preheating sleeve, and the air inlet pipe is communicated with the filter box and the hot air furnace;

[0008] The filter assembly is detachably mounted in the filter box;

[0009] The recovery box is located on one side of the filter box, and a conveying seat is provided between the recovery box and the filter box;

[0010] The recycling component is installed in the recycling box;

[0011] The preheating pipe is fixedly connected to one side of the recovery box;

[0012] The exhaust pipe is connected to the preheating pipe through the exhaust pipe;

[0013] A recovery pipe is connected between the heating pipe group and the exhaust pipe.

[0014] Preferably, the filter assembly comprises:

[0015] A protective cover, the protective cover is detachably connected to the filter box, and a groove matching the side wall of the filter box is formed at the bottom end of the protective cover;

[0016] An activated carbon mesh plate, wherein the activated carbon mesh plate is detachably connected to the bottom end of the protective cover;

[0017] The adsorption mesh plate is located on one side of the activated carbon mesh plate, and a slot matching the activated carbon mesh plate and the adsorption mesh plate is provided at the bottom end of the protective cover.

[0018] Furthermore, the recycling component comprises:

[0019] A water inlet pipe, the water inlet pipe being in communication with one side of the recovery tank;

[0020] A water outlet pipe, the water outlet pipe being connected to the other side of the recovery tank;

[0021] A heat exchange tube group is connected between the water inlet pipe and the water outlet pipe, and the heating tube group is located in the recovery box.

[0022] As a further solution of the present application, the conveying seat includes:

[0023] A conveying fan, the conveying fan is installed between the filter box and the recovery box through a mounting seat;

[0024] A connecting pipe, the connecting pipe being connected between the output end of the conveying fan and the filter box;

[0025] A conveying pipe is connected between the recovery box and the output end of the conveying fan.

[0026] On the basis of the above-mentioned solution, a plurality of support plates are fixedly connected to the inner wall of the recovery box, and a plurality of support plates are provided with support grooves for supporting the heat exchange tube group.

[0027] It should also be noted that the exhaust pipe and the recovery pipe are respectively provided with a first valve and a second valve, and the water inlet pipe and the water outlet pipe are respectively installed with a water inlet valve and a water outlet valve.

[0028] The working principle and beneficial effects of the utility model are:

[0029] 1. In the utility model, the hot air generated by the hot blast furnace is conveniently passed into the filter box through the conveying seat and the air inlet pipe. At the same time, the air inlet pipe can be preheated through the preheating sleeve. The hot air from the hot blast furnace can be filtered and purified through the cooperation of the filter box and the filter assembly, so as to reduce the influence of impurities in the hot air from the hot blast furnace on the subsequent waste heat recovery and utilization;

[0030] 2. In the utility model, when the filtered hot air from the hot blast furnace enters the recovery box through the conveying seat, the waste heat of the hot air from the hot blast furnace can be recovered through the recovery component to heat domestic water, etc., so that the hot air from the hot blast furnace can be recovered once;

[0031] 3. In the utility model, the hot air from the hot blast furnace is conveniently discharged to the recovery box through the preheating pipe, and the exhaust pipe can be preheated through the preheating pipe. The hot air from the hot blast furnace can enter the heating pipe group through the cooperation of the exhaust pipe and the recovery pipe, so as to preheat or keep the hot blast furnace warm, thereby recycling the waste heat of the hot blast furnace for a second time, and then the hot air from the hot blast furnace is discharged through the exhaust pipe, so that the waste heat of the hot blast furnace can be recycled again;

[0032] 4. Therefore, compared with the problem of low waste heat utilization efficiency in the prior art, the hot blast furnace waste heat utilization device is convenient for multiple recycling of the hot blast furnace waste heat through the cooperation of the filter box, preheating sleeve, air intake pipe, filter assembly, recovery box, recovery assembly, preheating pipe, exhaust pipe and heating pipe group, thereby improving the recovery efficiency of the hot blast furnace waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0035] Figure 2 It is a cross-sectional structural diagram of the filter box, recovery box and protective cover of the utility model;

[0036] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0037] Figure 4 It is a schematic diagram of the structure of the water inlet pipe, the water outlet pipe and the heat exchange tube group of the utility model.

[0038] In the figure: 1. filter box; 2. preheating sleeve; 3. air inlet pipe; 4. recovery box; 5. preheating pipe; 6. exhaust pipe; 7. recovery pipe; 8. protective cover; 9. activated carbon mesh plate; 10. adsorption mesh plate; 11. water inlet pipe; 12. water outlet pipe; 13. heat exchange tube group; 14. conveying fan; 15. support plate; 16. first valve; 17. second valve; 18. water inlet valve; 19. water outlet valve; 20. heating tube group. DETAILED DESCRIPTION

[0039] The following will be combined with 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 of 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.

[0040] like Figure 1~Figure 4 As shown, this embodiment proposes a hot blast furnace waste heat utilization device, including a filter box 1, a preheating sleeve 2, an air intake pipe 3, a filter assembly, a recovery box 4, a recovery assembly, a preheating pipe 5, an exhaust pipe 6 and a heating pipe group 20, the preheating sleeve 2 is fixedly connected to one side of the filter box 1, the air intake pipe 3 is arranged in the preheating sleeve 2, the length of the air intake pipe 3 is less than the length of the preheating sleeve 2, which is convenient for preheating the air intake pipe 3, and the air intake pipe 3 is connected to the filter box 1 and the hot blast furnace, the filter assembly can be detachably installed in the filter box 1, the recovery box 4 is located on one side of the filter box 1, and a recovery box 4 is arranged between the filter box 1 and the filter box 1. A conveying seat is provided, and the recovery component is installed in the recovery box 4. The preheating pipe 5 is fixedly connected to one side of the recovery box 4. The exhaust pipe 6 passes through and is connected to the preheating pipe 5. A recovery pipe 7 is connected between the heating pipe group 20 and the exhaust pipe 6. The exhaust pipe 6 and the recovery pipe 7 are respectively provided with a first valve 16 and a second valve 17. By opening the first valve 16, the hot air from the hot blast furnace can be discharged through the exhaust pipe 6 for recycling. At the same time, by opening the second valve 17, the hot air from the hot blast furnace can enter the heating pipe group 20 through the recovery pipe 7, so that the hot blast furnace can be preheated or kept warm.

[0041] like Figure 1~Figure 4 As shown, the filter assembly includes a protective cover 8, an activated carbon mesh plate 9 and an adsorption mesh plate 10. The protective cover 8 is detachably connected to the filter box 1. A groove matching the side wall of the filter box 1 is provided at the bottom end of the protective cover 8, so that the protective cover 8 can be installed and removed from the filter box 1. The activated carbon mesh plate 9 is detachably connected to the bottom end of the protective cover 8. The adsorption mesh plate 10 is located on one side of the activated carbon mesh plate 9. A card slot matching the activated carbon mesh plate 9 and the adsorption mesh plate 10 is provided at the bottom end of the protective cover 8, so that the activated carbon mesh plate 9 and the adsorption mesh plate 10 can be installed and removed from the protective cover 8, thereby facilitating the replacement and cleaning of the activated carbon mesh plate 9 and the adsorption mesh plate 10.

[0042] Through the cooperation of the activated carbon mesh plate 9 and the adsorption mesh plate 10, the hot air from the hot blast furnace can be filtered and purified, so as to reduce the influence of impurities in the hot air from the hot blast furnace on the subsequent waste heat recovery and utilization.

[0043] like Figure 1~Figure 4 As shown, the recovery assembly includes an inlet pipe 11, an outlet pipe 12 and a heat exchange tube group 13. The inlet pipe 11 is connected to one side of the recovery box 4, and the outlet pipe 12 is connected to the other side of the recovery box 4. The heat exchange tube group 13 is connected between the inlet pipe 11 and the outlet pipe 12, and the heating tube group 20 is located in the recovery box 4. The inlet pipe 11 and the outlet pipe 12 are respectively installed with an inlet valve 18 and an outlet valve 19, which is convenient for water to flow into or out of the heating tube group 20.

[0044] When the hot air from the hot blast furnace enters the recovery box 4, it can heat the domestic water in the heat exchange tube group 13, so that the hot air from the hot blast furnace can be recovered and utilized.

[0045] like Figure 1~Figure 4 As shown, the conveying seat includes a conveying fan 14, a connecting pipe and a conveying pipe. The conveying fan 14 is installed between the filter box 1 and the recovery box 4 through the mounting seat. The connecting pipe is connected between the output end of the conveying fan 14 and the filter box 1, and the conveying pipe is connected between the recovery box 4 and the output end of the conveying fan 14.

[0046] By starting the conveying fan 14, the hot air from the hot blast furnace can enter the filter box 1 through the air inlet pipe 3 and the preheating sleeve 2, and the filtered hot air from the hot blast furnace can enter the recovery box 4 through the connecting pipe and the conveying pipe.

[0047] like Figure 1~Figure 4 As shown, a plurality of support plates 15 are fixedly connected to the inner wall of the recovery box 4, and a plurality of support plates 15 are provided with support grooves for supporting the heat exchange tube group 13;

[0048] Through the cooperation of the plurality of support plates 15 and the plurality of support grooves, the heat exchange tube group 13 can be stably supported, so as to increase the stability of the installation of the heat exchange tube group 13 in the recovery box 4 .

[0049] In this embodiment, when the hot air from the hot blast furnace enters the filter box 1 through the air inlet pipe 3, the impurities in the hot air from the hot blast furnace can be filtered through the cooperation of the activated carbon mesh plate 9 and the adsorption mesh plate 10, and the filtered hot air from the hot blast furnace can enter the recovery box 4 through the cooperation of the conveying fan 14, the connecting pipe and the conveying pipe. When the hot air from the hot blast furnace enters the recovery box 4, the domestic water in the heat exchange tube group 13 can be heated by the hot air from the hot blast furnace. At the same time, when the hot air from the hot blast furnace enters the exhaust pipe 6 through the preheating pipe 5, the second valve 17 can be opened to allow the hot air from the hot blast furnace to enter the heating tube group 20 through the recovery pipe 7, so as to heat or keep the hot blast furnace warm. Then, by opening the first valve 16, the hot air from the hot blast furnace can be discharged through the exhaust pipe 6 for further recycling.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hot blast stove waste heat utilization device, characterized in that: include: Filter box (1); A preheating sleeve (2), the preheating sleeve (2) being fixedly connected to one side of the filter box (1); An air intake pipe (3), the air intake pipe (3) being arranged in the preheating sleeve (2), and the air intake pipe (3) being in communication with the filter box (1) and the hot air furnace; A filter assembly, the filter assembly being detachably mounted in the filter box (1); A recovery box (4), the recovery box (4) being located on one side of the filter box (1), and a conveying seat being provided between the recovery box (4) and the filter box (1); A recycling component, the recycling component being installed in the recycling box (4); A preheating pipe (5), the preheating pipe (5) being fixedly connected to one side of the recovery box (4); An exhaust pipe (6), the exhaust pipe (6) penetrating and communicating with the preheating pipe (5); A heating tube group (20), wherein a recovery pipe (7) is connected between the heating tube group (20) and the exhaust pipe (6).

2. A hot blast stove waste heat utilization device according to claim 1, characterized in that: The filter assembly comprises: A protective cover (8), the protective cover (8) being detachably connected to the filter box (1), and a groove matching the side wall of the filter box (1) being formed at the bottom end of the protective cover (8); An activated carbon mesh plate (9), the activated carbon mesh plate (9) being detachably connected to the bottom end of the protective cover (8); An adsorption mesh plate (10), wherein the adsorption mesh plate (10) is located on one side of the activated carbon mesh plate (9), and a slot matching the activated carbon mesh plate (9) and the adsorption mesh plate (10) is provided at the bottom end of the protective cover (8).

3. A hot blast stove waste heat utilization device according to claim 2, characterized in that: The recycling assembly comprises: A water inlet pipe (11), the water inlet pipe (11) being in communication with one side of the recovery box (4); A water outlet pipe (12), the water outlet pipe (12) being connected to the other side of the recovery box (4); A heat exchange tube group (13), the heat exchange tube group (13) being connected between the water inlet pipe (11) and the water outlet pipe (12), and the heating tube group (20) being located in the recovery box (4).

4. A hot blast stove waste heat utilization device according to claim 3, characterized in that: The conveying seat comprises: A conveying fan (14), the conveying fan (14) being installed between the filter box (1) and the recovery box (4) via a mounting seat; A connecting pipe, the connecting pipe being connected between the output end of the conveying fan (14) and the filter box (1); A conveying pipe, the conveying pipe being connected between the recovery box (4) and an output end of the conveying fan (14).

5. A hot blast stove waste heat utilization device according to claim 4, characterized in that: A plurality of support plates (15) are fixedly connected to the inner wall of the recovery box (4), and each of the plurality of support plates (15) is provided with a support groove for supporting the heat exchange tube group (13).

6. A hot blast stove waste heat utilization device according to claim 5, characterized in that: The exhaust pipe (6) and the recovery pipe (7) are respectively provided with a first valve (16) and a second valve (17), and the water inlet pipe (11) and the water outlet pipe (12) are respectively provided with a water inlet valve (18) and a water outlet valve (19).

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