Silicon iron smelting flue gas waste heat recovery device

Abstract

The utility model discloses a ferrosilicon smelting flue gas waste heat recovery device, and relates to the technical field of ferrosilicon smelting flue gas waste heat recovery devices. The smoke exhaust device comprises a smoke exhaust pipe, the surface of the smoke exhaust pipe is sleeved with a heat recovery assembly, the top face of the smoke exhaust pipe is fixedly connected with a containing plate, and the top face of the containing plate is connected with a smoke suction assembly in a penetrating mode. Through the arrangement of the heat recovery assembly and screwing of the stop valve pipe, normal-temperature water flow enters the heating copper pipe, high-temperature waste gas generated in the smoke exhaust pipe can heat the outside of the smoke exhaust pipe, the temperature of air around the outer wall of the smoke exhaust pipe rises rapidly, high-temperature air is retained by the heat preservation plate, water in the heating copper pipe is heated, and the water in the heating copper pipe is heated. And heat energy of waste gas in the smoke exhaust pipe can be recycled to heat a water body, so that the effect of avoiding heat loss and waste caused by the fact that hot gas is guided out and then the water body is heated through other energy conversion devices is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of ferrosilicon smelting flue gas waste heat recovery devices, and specifically relates to a ferrosilicon smelting flue gas waste heat recovery device. Background Art

[0002] The heat recovery device of the existing technology cannot effectively utilize the hot air after heating the clean air with high-temperature exhaust gas. An additional energy conversion device is required to heat the water body, which causes heat loss during the multiple heat conversions. The waste flue gas lacks a structure to filter and clean it, and is directly discharged into the air, which will pollute the surrounding air.

[0003] Chinese patent publication number CN209773457U discloses a ferrosilicon casting flue gas waste heat recovery device. The device comprises a support mechanism, a molten ferrosilicon holding mechanism, a flue gas waste heat recovery mechanism, and a flue gas waste heat isolation mechanism. The support mechanism is disposed on a horizontal surface, the molten ferrosilicon holding mechanism is disposed within the bottom end of the support mechanism, the flue gas waste heat recovery mechanism is disposed at the top of the support mechanism, and the flue gas waste heat isolation mechanisms are disposed on both sides of the support mechanism. The device is provided with first, second, third, and fourth isolation doors to significantly reduce the contact surface between the flue gas waste heat in the ferrosilicon casting space and the external air, thereby reducing direct heat exchange between the flue gas waste heat in the ferrosilicon casting space and the external air, and also reducing potential hazards to surrounding personnel on both sides of the ferrosilicon casting space. Furthermore, the device also increases the total amount of flue gas in the ferrosilicon casting space. The flue gas waste heat recovery pipe transports more flue gas to an external device, achieving maximum recovery of flue gas waste heat in the ferrosilicon casting space.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a ferrosilicon smelting flue gas waste heat recovery device, which solves the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A ferrosilicon smelting flue gas waste heat recovery device comprises: a smoke exhaust pipe, a heat recovery component is sleeved on the surface of the smoke exhaust pipe, a placement plate is fixedly connected to the top surface of the smoke exhaust pipe, a smoke extraction component is connected through the top surface of the placement plate, and a filter component is connected through the top surface of the smoke extraction component;

[0008] The heat recovery component includes a heating copper tube sleeved on the surface of the smoke exhaust pipe, the surface of the heating copper tube is sleeved with an insulation board, and both ends of the heating copper tube are connected with a stop valve tube.

[0009] Optionally, the smoke extraction assembly includes a flow hood connected to the top surface of the placement plate, the bottom surface of the flow hood is fixedly connected to the bottom plate, the surface of the bottom plate is fixed with a negative pressure impeller connected to the smoke exhaust pipe, the top surface of the flow hood is fixedly connected to the protective structure, and the top surface of the flow hood is fixedly connected to the dust structure.

[0010] Optionally, the protective structure includes a hinge that is fixedly connected to the side of the shroud in an axisymmetric manner, and a dustproof plate is fixedly connected to the side of the hinge.

[0011] Optionally, the dust structure includes a dust box fixedly connected to the top surface of the hood, air outlets are provided on both sides of the dust box, and dustproof cloths are fixedly connected to the inside of the air outlets.

[0012] Optionally, the filter assembly includes a filter tube connected to the top surface of the dust box, the top surface of the filter tube is provided with a coarse filter plate, the top surface of the coarse filter plate is provided with an activated carbon layer, and the top surface of the activated carbon layer is provided with a filter cotton layer.

[0013] Optionally, a thread pattern is provided on the bottom end of the filter tube, and the filter tube is threadably connected to the top surface of the dust box through the thread pattern provided on the bottom surface.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0015] 1. Through the setting of the heat recovery component, the stop valve pipe is turned to allow the normal temperature water flow to enter the interior of the heating copper pipe. The high-temperature exhaust gas generated inside the exhaust pipe will heat the outside of the exhaust pipe, causing the air temperature around the outer wall of the exhaust pipe to rise rapidly. The high-temperature air is retained by the insulation board to heat the water inside the heating copper pipe. The heat energy of the exhaust gas inside the exhaust pipe can be recovered and utilized to heat the water, thereby avoiding the loss of heat by conducting hot gas to heat the water through other energy conversion devices.

[0016] 2. Through the setting of the smoke extraction component and the filter component, the negative pressure impeller rotates, extracting the exhaust gas inside the exhaust pipe and transporting it to the dust box through the draft hood. Then, it enters the filter pipe from the top surface of the dust box and is filtered by the coarse filter plate, activated carbon layer and filter cotton layer. The metal particles and other pollutants in the exhaust gas are filtered, thereby preventing the exhaust gas from being directly discharged into the air and polluting the surrounding air environment.

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] In the picture:

[0020] Figure 1 Schematic diagram of the overall structure;

[0021] Figure 2 This is a schematic diagram of the heat recovery component structure;

[0022] Figure 3 It is a schematic diagram of the structure of the smoking component and the filtering component;

[0023] Figure 4 Schematic diagram of the split structure.

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1. Exhaust pipe; 2. Heat recovery component; 21. Heating copper tube; 22. Insulation board; 23. Stop valve tube; 3. Smoke extraction component; 31. Conveyor hood; 32. Bottom plate; 33. Negative pressure impeller; 34. Protective structure; 341. Hinge; 342. Dustproof plate; 35. Dust structure; 351. Dust box; 352. Dustproof cloth; 4. Filter component; 41. Filter tube; 42. Coarse filter plate; 43. Activated carbon layer; 44. Filter cotton layer; 5. Placement plate.

[0026] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] See also Figure 1-4 As shown, in this embodiment, a silicon iron smelting flue gas waste heat recovery device is provided, including: a smoke exhaust pipe 1, a heat recovery component 2 is sleeved on the surface of the smoke exhaust pipe 1, a placement plate 5 is fixedly connected to the top surface of the smoke exhaust pipe 1, a smoke extraction component 3 is connected to the top surface of the placement plate 5, and a filter component 4 is connected to the top surface of the smoke extraction component 3.

[0029] One application of this embodiment is that the high-temperature air is retained by the insulation board 22 and heats the heating copper tube 21, thereby recovering the heat energy of the exhaust gas inside the exhaust pipe 1 and heating the water. It should be noted that all electrical devices involved in this application can be powered by batteries or external power supplies.

[0030] like Figure 3As shown, the protective structure 34 of this embodiment includes a hinge 341 that is axially symmetrically fixedly connected to the side of the hood 31, and a dustproof plate 342 is fixedly connected to the side of the hinge 341; when the negative pressure impeller 33 generates high-pressure airflow upward, the dustproof plate 342 can be lifted up to facilitate the circulation of exhaust gas. The dust in the exhaust gas adheres to the inside of the dust box 351, the negative pressure impeller 33 stops working, and the dustproof plate 342 closes due to gravity rotation to prevent the dust attached to the inside of the dust box 351 from falling into the inside of the smoke exhaust pipe 1.

[0031] like Figure 4 As shown, the bottom end of the filter tube 41 of this embodiment is provided with a threaded pattern, and the filter tube 41 is threadedly connected to the top surface of the dust box 351 through the threaded pattern provided on the bottom surface; the filter tube 41 can be disassembled and installed to facilitate the replacement of the filter component 4 that has been used for a long time.

[0032] Example 1:

[0033] In this embodiment, the heat recovery assembly 2 includes a heating copper tube 21 sleeved on the surface of the exhaust pipe 1, an insulation board 22 is sleeved on the surface of the heating copper tube 21, and both ends of the heating copper tube 21 are connected to a stop valve tube 23;

[0034] By setting the heat recovery component 2, turning the stop valve tube 23 allows the normal temperature water flow to enter the heating copper tube 21. The high-temperature exhaust gas generated inside the exhaust pipe 1 will heat the outside of the exhaust pipe 1, causing the air temperature around the outer wall of the exhaust pipe 1 to rise rapidly. The high-temperature air is retained by the insulation board 22 to heat the water inside the heating copper tube 21. The heat energy of the exhaust gas inside the exhaust pipe 1 can be recovered and utilized to heat the water, thereby avoiding the loss and waste of heat caused by extracting the hot gas and then heating the water through other energy conversion devices.

[0035] Example 2:

[0036] In this embodiment, the smoke extraction assembly 3 includes a flow cover 31 connected to the top surface of the placement plate 5, the bottom surface of the flow cover 31 is fixedly connected to the bottom plate 32, the surface of the bottom plate 32 is fixed with a negative pressure impeller 33 connected to the exhaust pipe 1, the top surface of the flow cover 31 is fixedly connected to the protective structure 34, the top surface of the flow cover 31 is fixedly connected to the dust structure 35, the protective structure 34 includes a hinge 341 fixedly connected to the side of the flow cover 31 in an axisymmetric manner, and the side of the hinge 341 A dustproof plate 342 is fixedly connected, and the dust structure 35 includes a dust box 351 fixedly connected to the top surface of the hood 31. Air outlets are opened on both sides of the dust box 351, and dustproof cloths 352 are fixedly connected to the inside of the air outlets. The filter assembly 4 includes a filter tube 41 connected to the top surface of the dust box 351. The top surface of the filter tube 41 is provided with a coarse filter plate 42. The top surface of the coarse filter plate 42 is provided with an activated carbon layer 43. The top surface of the activated carbon layer 43 is provided with a filter cotton layer 44.

[0037] Through the arrangement of the smoke extraction component 3 and the filter component 4, the negative pressure impeller 33 rotates, extracting the exhaust gas from the exhaust pipe 1 and transporting it to the dust box 351 through the hood 31, and then entering the filter pipe 41 from the top surface of the dust box 351, and being filtered by the coarse filter plate 42, the activated carbon layer 43 and the filter cotton layer 44, filtering the metal particles and other pollutants in the exhaust gas, thereby preventing the exhaust gas from being directly discharged into the air and causing pollution to the surrounding air environment.

[0038] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention should be understood by anyone. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention. The technology, shape, and structure not described in detail in the present invention are all known technologies.

Claims

1. A ferrosilicon smelting flue gas waste heat recovery device, characterized in that: include: A smoke exhaust pipe (1), wherein a heat recovery component (2) is sleeved on the surface of the smoke exhaust pipe (1), a placement plate (5) is fixedly connected to the top surface of the smoke exhaust pipe (1), a smoke extraction component (3) is connected through the top surface of the placement plate (5), and a filter component (4) is connected through the top surface of the smoke extraction component (3); The heat recovery assembly (2) comprises a heating copper tube (21) sleeved on the surface of the smoke exhaust pipe (1); a heat preservation plate (22) is sleeved on the surface of the heating copper tube (21); and both ends of the heating copper tube (21) are connected to a stop valve tube (23).

2. The ferrosilicon smelting flue gas waste heat recovery device according to claim 1, characterized in that: The smoke extraction assembly (3) comprises a flow hood (31) connected to the top surface of the placement plate (5); the bottom surface of the flow hood (31) is fixedly connected to a bottom plate (32); the surface of the bottom plate (32) is fixedly provided with a negative pressure impeller (33) connected to the smoke exhaust pipe (1); the top surface of the flow hood (31) is fixedly connected to a protective structure (34); and the top surface of the flow hood (31) is fixedly connected to a dust structure (35).

3. The ferrosilicon smelting flue gas waste heat recovery device according to claim 2, characterized in that: The protective structure (34) comprises a hinge (341) fixedly connected to the side of the shroud (31) in an axisymmetric manner, and a dustproof plate (342) is fixedly connected to the side of the hinge (341).

4. The ferrosilicon smelting flue gas waste heat recovery device according to claim 2, characterized in that: The dust structure (35) includes a dust box (351) fixedly connected to the top surface of the hood (31), air outlets are provided on both sides of the dust box (351), and dustproof cloths (352) are fixedly connected inside the air outlets.

5. The ferrosilicon smelting flue gas waste heat recovery device according to claim 1, characterized in that: The filter assembly (4) comprises a filter tube (41) connected to the top surface of the dust box (351), the top surface of the filter tube (41) is provided with a coarse filter plate (42), the top surface of the coarse filter plate (42) is provided with an activated carbon layer (43), and the top surface of the activated carbon layer (43) is provided with a filter cotton layer (44).

6. The ferrosilicon smelting flue gas waste heat recovery device according to claim 5, characterized in that: The bottom end of the filter tube (41) is provided with a thread pattern, and the filter tube (41) is threadably connected to the top surface of the dust box (351) through the thread pattern provided on the bottom surface.

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