Silicon iron smelting flue gas recovery device

Abstract

According to the silicon iron smelting flue gas recovery device, the flue gas collected by the flue gas collection cover is collected through connection of the flue gas collection box and the filter box, the flue gas is directly stored in the flue gas collection box and is filtered and discharged through the filter box, the collected flue gas can be treated in a centralized mode, and the flue gas treatment effect and the flue gas treatment efficiency are improved. In addition, a waste heat recovery device is further arranged, waste heat generated in the smoke exhaust process is effectively recycled, energy is saved, and the device is suitable for large-scale industrial popularization.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of fume recovery, especially relates to a ferrosilicon smelting fume recovery device. BACKGROUND

[0002] In the smelting production process of ferrosilicon furnace, a large amount of dust-containing fume is produced, and with the increase of fume in the smelting and pouring process of ferrosilicon, a large amount of fume produced by high-temperature molten iron is scattered in the workshop, and the environment in the workshop is deteriorated, and in the long-term working environment, the silicon-iron micro-particles in the large amount of fume produced by high-temperature molten iron can be inhaled into the lungs of workers, and respiratory diseases can be caused. And a large amount of heat contained in the fume is directly emitted in the air, so as to cause the waste of heat source. In the prior art, some workshops will be discharged without organization, and some workshops will be discharged after simple dust removal and treatment, so as to cause the unqualified emission index of the scattered gas and the pollution of the atmospheric environment. In the prior art, the following problems exist in the working process: the filter screen in the filter is replaced frequently, and if the replacement is not timely, the fume leakage will pollute the air, the waste heat cannot be better utilized, and the heat is wasted. CONTENT

[0003] The utility model discloses a ferrosilicon smelting fume recovery device, which can solve the problems of poor fume treatment effect and ineffective utilization of waste heat in the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme to realize it:

[0005] A ferrosilicon smelting fume recovery device, comprising a ferrosilicon smelting furnace, wherein the top of the ferrosilicon smelting furnace is provided with a fume collecting cover, and the fume collecting cover is connected with a smoke dust pipeline.

[0006] The smoke dust pipeline is in the shape of "L", comprising a horizontal section and a vertical section.

[0007] The horizontal section of the smoke dust pipeline is connected with a waste heat recovery device, and the vertical section of the smoke dust pipeline is communicated to a smoke dust recovery assembly.

[0008] The smoke dust recovery assembly comprises a smoke dust collecting box, the inside of the smoke dust collecting box is divided into left and right parts by a filter partition plate, and the vertical section of the smoke dust pipeline is communicated with the right part in the smoke dust collecting box.

[0009] The left part in the smoke dust collecting box is connected with a filter box.

[0010] The utility model also has the following characteristics:

[0011] Further, the waste heat recovery device comprises a plurality of heat exchange water pipes wound on the horizontal section of the flue gas pipeline, a water pump is arranged on the heat exchange water pipe, and the heat exchange water pipe is communicated with the water tank inlet.

[0012] The water tank outlet is connected with the waste heat boiler.

[0013] Further, the vertical section of the flue gas pipeline is vertically provided with adsorption pieces inside;

[0014] The inside of the adsorption piece is uniformly provided with ash storage holes, and the outside of the adsorption piece is uniformly provided with bristles.

[0015] Further, the right part of the smoke dust collecting box is drawer type arranged with a collecting drawer.

[0016] Further, the filter plate further comprises a plug plate;

[0017] The upper half of the filter plate is provided with uniformly distributed filter holes; the smoke dust collecting box is provided with a plug-in slot at a corresponding position, and the plug plate can be inserted into the plug-in slot, so as to cover the filter holes of the filter plate.

[0018] Further, the horizontal section of the flue gas pipeline is provided with an on-off valve near the flue gas collecting cover.

[0019] Compared with the prior art, the present application has the following technical effects:

[0020] The silicon-iron smelting flue gas recovery device is connected with the filter box, collects the flue gas collected by the flue gas collecting cover, directly stores the smoke dust in the smoke dust collecting box, and filters and discharges the smoke dust through the filter box, so that the collected smoke dust can be concentrated and treated, and the flue gas treatment effect and efficiency are improved. In addition, the waste heat recovery device is also provided, which effectively recovers and utilizes the waste heat generated in the smoke exhaust process, saves energy, and is suitable for large-scale and popularization in industry. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall structure schematic diagram of the silicon-iron smelting flue gas recovery device of the present application;

[0022] Figure 2 It is the internal structure schematic diagram of the smoke dust recovery assembly in the present application;

[0023] Figure 3 It is the internal structure schematic diagram of the flue gas pipeline in the present application;

[0024] Figure 4 It is the adsorption piece structure schematic diagram in the present application.

[0025] The meanings of the numbers in the figure are as follows:

[0026] 1, smoke collection hood; 2, smoke pipe; 201, horizontal section; 202, vertical section; 3, waste heat recovery device; 4, smoke recovery assembly; 5, smoke collection box; 6, filter partition; 7, filter box; 8, heat exchange water pipe; 9, water tank; 10, waste heat boiler; 11, adsorption sheet; 12, ash storage hole; 13, brush; 14, collection drawer; 15, plug; 16, filter hole; 17, on-off valve. DETAILED DESCRIPTION

[0027] It should be noted that all components in the present application, such as no special instructions, all use known components in the prior art. For example, the smoke collection hood uses the commonly known smoke collection hood.

[0028] The following gives the specific embodiments of the present application, it should be noted that the present application is not limited to the following specific embodiments, any equivalent transformation made on the basis of the technical scheme of the present application falls within the scope of the present application.

[0029] As shown in Figure Figure 1 A silicon iron smelting flue gas recovery device, comprising a silicon iron smelting furnace, the top of the silicon iron smelting furnace is provided with a smoke collection hood 1, the smoke collection hood 1 is connected with a smoke pipe 2;

[0030] The smoke pipe 2 is "L" shaped, comprising a horizontal section 201 and a vertical section 202;

[0031] The horizontal section 201 of the smoke pipe 2 is connected with a waste heat recovery device 3, and the vertical section 202 of the smoke pipe 2 is communicated to a smoke recovery assembly 4;

[0032] The smoke recovery assembly 4 comprises a smoke collection box 5; the inside of the smoke collection box 5 is divided into left and right parts by a filter partition 6, and the vertical section 202 of the smoke pipe 2 is communicated with the right part in the smoke collection box 5;

[0033] The left part in the smoke collection box 5 is connected with a filter box 7.

[0034] The waste heat recovery device 3 comprises a heat exchange water pipe 8 wound on the horizontal section 201 of the smoke pipe 2 multiple times, a water pump is arranged on the heat exchange water pipe 8, and the heat exchange water pipe 8 is communicated with an inlet of a water tank 9;

[0035] The outlet of the water tank 9 is connected with a waste heat boiler 10.

[0036] The silicon-iron smelting flue gas recovery device is characterized in that the flue gas collecting box 5 is connected with the filtering box 7, the flue gas collected by the flue gas collecting cover 1 is directly stored in the flue gas collecting box 5, and the flue gas is filtered and discharged through the filtering box, the collected flue gas can be concentratedly treated, and the flue gas treatment effect and the flue gas treatment efficiency are improved.

[0037] As a preferred solution, the vertical section 202 of the flue dust pipeline 2 is vertically provided with adsorption pieces 11 inside;

[0038] The inside of the adsorption piece 11 is uniformly provided with ash storage holes 12, and the outside of the adsorption piece 11 is uniformly provided with bristles 13. The collection efficiency of the flue dust is further improved.

[0039] As a preferred solution, the right part of the flue dust collecting box 5 is provided with a collecting drawer 14 in a drawer type.

[0040] As a preferred solution, the filtering baffle 6 is further provided with a plug-in plate 15, and the upper half of the filtering baffle 6 is provided with uniformly distributed filtering holes 16; the flue dust collecting box 5 is provided with a plug-in slot at a corresponding position, and the plug-in plate 15 can be inserted into the plug-in slot, so as to cover the filtering holes 16 of the filtering baffle 6.

[0041] As a preferred solution, the horizontal section 201 of the flue dust pipeline 2 is provided with a switch valve close to the flue gas collecting cover 1.

Claims

1. A ferrosilicon smelting off-gas recovery apparatus comprising a ferrosilicon smelting furnace, characterized by, The top of the ferrosilicon smelting furnace is provided with a flue gas collecting cover (1), and the flue gas collecting cover (1) is connected with a flue dust pipeline (2). The flue dust pipeline (2) is "L"-shaped, comprising a horizontal section (201) and a vertical section (202). The horizontal section (201) is connected with a waste heat recovery device (3), and the vertical section (202) of the flue dust pipeline (2) is communicated to a flue dust recovery assembly (4). The flue dust recovery assembly (4) comprises a flue dust collecting box (5), and the inside of the flue dust collecting box (5) is divided into left and right parts by a filter partition plate (6), and the vertical section (202) of the flue dust pipeline (2) is communicated with the right part in the flue dust collecting box (5). The left part in the flue dust collecting box (5) is connected with a filter box (7).

2. The ferrosilicon smelting off-gas recovery device as claimed in claim 1, characterized in that, The waste heat recovery device (3) comprises a heat exchange water pipe (8) coiled on the horizontal section (201) of the flue dust pipeline (2), the heat exchange water pipe (8) is provided with a water pump, and the heat exchange water pipe (8) is communicated with an inlet of a water tank (9). The outlet of the water tank (9) is connected with a waste heat boiler (10).

3. The ferrosilicon smelting off-gas recovery apparatus as claimed in claim 1, wherein, The vertical section (202) of the flue dust pipeline (2) is provided with an adsorption sheet (11) in the vertical direction inside; The inside of the adsorption sheet (11) is uniformly provided with ash storage holes (12), and the outside of the adsorption sheet (11) is uniformly provided with bristles (13).

4. The ferrosilicon smelting off-gas recovery device as claimed in claim 3, characterized in that, The right part in the flue dust collecting box (5) is provided with a collecting drawer (14) in a drawer type.

5. The ferrosilicon smelting off-gas recovery device as claimed in claim 4, characterized in that, A plug-in plate (15) is further arranged in the collecting box (5). The upper half of the filter partition plate (6) is provided with uniformly distributed filter holes (16), and the flue dust collecting box (5) is provided with a plug-in groove at a corresponding position, the plug-in plate (15) can be inserted into the plug-in groove, so as to cover the filter holes (16) of the filter partition plate (6).

6. The ferrosilicon smelting off-gas recovery device as claimed in claim 4, wherein, The horizontal section (201) of the flue dust pipeline (2) is provided with an on-off valve (17) near the flue gas collecting cover (1).

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