Waste heat recycling device for oxygen-enriched smelting furnace

Abstract

The utility model discloses a waste heat recycling device for an oxygen-enriched smelting furnace, and relates to the field of oxygen-enriched smelting furnaces. The device comprises a cold water tank, four supporting blocks are fixedly installed at the upper end of the cold water tank, a hot water tank is installed at the upper ends of the supporting blocks, and a thermoelectric power generation block is installed between the cold water tank and the hot water tank. Heat generated by the slag can be transferred into the hot water tank to heat water in the hot water tank, so that the water in the hot water tank is higher than water in the cold water tank, and the water in the cold water tank enters a heat exchange pipe under the action of a water pump and a water outlet pipe; water subjected to slag heat exchange enters the water inlet pipe through the heat exchange pipe and enters the hot water tank, the water in the hot water tank is heated, the water in the hot water tank is further heated, and the temperature difference power generation block generates power under the effect of the temperature difference in the hot water tank and the cold water tank.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of oxygen -enriched smelting furnace, especially be related to a device for oxygen -enriched smelting furnace waste heat recovery. BACKGROUND

[0002] Oxygen -enriched smelting furnace is a smelting furnace using oxygen -enriched air in the smelting process, and there are various types of oxygen -enriched smelting furnaces, such as oxygen -enriched side-blown smelting furnace, oxygen -enriched bottom-blown smelting furnace, etc. The structures of these furnaces are different, but they usually include furnace body, combustion system, feeding system, exhaust system, etc. Among them, the furnace body is a container for containing smelting materials, the combustion system is used to blow in oxygen -enriched air and ignite fuel, the feeding system is used to add materials to the furnace, and the exhaust system is used to exhaust the flue gas generated in the smelting process;

[0003] The existing oxygen -enriched smelting furnace will have part of the heat discharged with the flue gas when in use, causing heat loss and waste of part of the resources, and the flue gas contains certain impurities, which will also affect the air after being discharged from the furnace body. After the furnace body is used, the remaining slag also has a large amount of heat, which will also be discharged with the slag, causing heat loss.

[0004] Therefore, we provide a device for oxygen -enriched smelting furnace waste heat recovery to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide a device for oxygen -enriched smelting furnace waste heat recovery, which can solve the problem that the existing oxygen -enriched smelting furnace will have part of the heat discharged with the flue gas when in use, causing heat loss and waste of part of the resources, and the flue gas contains certain impurities, which will also affect the air after being discharged from the furnace body. After the furnace body is used, the remaining slag also has a large amount of heat, which will also be discharged with the slag, causing heat loss.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0007] The utility model is a device for oxygen -enriched smelting furnace waste heat recovery, which comprises a cold water tank, four support blocks are fixedly installed at the upper end of the cold water tank, a hot water tank is installed at the upper end of the support block, a thermoelectric power generation block is installed between the cold water tank and the hot water tank, the two ends of the thermoelectric power generation block are respectively inserted into the interiors of the cold water tank and the hot water tank, a slag box is arranged at the upper end of the hot water tank, a water inlet pipe is arranged on one side of the hot water tank, a water outlet pipe is arranged on one side of the cold water tank, a heat conduction pipe is penetrated through the interior of the slag box, the two ends of the heat conduction pipe are connected with the water inlet pipe and the water outlet pipe respectively, and a flue gas heat energy recovery structure is arranged in the interior of the hot water tank.

[0008] The utility model further sets up, one side of cold water tank is provided with the water pipe of adding, the water pump is provided with in one side of the inside of cold water tank, water pump is connected with the water pipe, one side of hot water tank is provided with the drain pipe.

[0009] The utility model further sets up, the flue gas heat energy recovery structure includes the heat exchange pipe, the heat exchange pipe is disc -shaped, the heat exchange pipe is installed in the inside of hot water tank, both ends of heat exchange pipe all are located the outside of hot water tank.

[0010] The utility model further sets up, one end of heat exchange pipe is installed with the connecting pipe, the surface of connecting pipe is provided with the air pump of drawing, one side of hot water tank is installed with the dust filter box, the dust filter box is connected with connecting pipe.

[0011] The utility model further sets up, the dust filter box is detachably installed with filter screen cover in the upper end of inside, the upper end of connecting pipe is movably inserted in the inside of filter screen cover.

[0012] The utility model further sets up, one side of dust filter box is provided with the smoke pipe of going in, the dust filter box is detachably installed with the sealing cover plate of upper end, the upper end of sealing cover plate is provided with the backflush pipe, the lower end of backflush pipe is located in the inside of filter screen cover.

[0013] The utility model further sets up, the upper end of dust filter box is provided with the limiting slot, the upper end of filter screen cover is connected with limiting slot and is attached with the lower end of sealing cover plate, both sides of the upper end of dust filter box are rotatably installed with the rotating screw sleeve, the inside of rotating screw sleeve is penetrated and is provided with fixed bolt, the upper end of fixed bolt is connected with sealing cover plate.

[0014] The utility model further sets up, the upper end of dust filter box is rotatably installed with the rotating ring, the inner ring of rotating ring is provided with the gear ring, the outside of rotating screw sleeve is provided with the rotating gear, and the rotating gear is engaged with gear ring.

[0015] The utility model has the advantages of following:

[0016] 1、 the utility model discloses, from the slag that the oxygen-rich smelting furnace inside takes out is put into the inside of slag box, and the heat of slag can be transferred to the inside of hot water tank, and the water in the inside of hot water tank is heated, and the water in the inside of hot water tank is higher than the water in the inside of cold water tank, and the water in the inside of cold water tank is under the action of water pump and water pipe, and enters the inside of heat exchange pipe, and the water of slag heat exchange is entered into the water pipe and enters the inside of hot water tank, and the water in the inside of hot water tank is heated, and the water in the inside of hot water tank is heated further, and the temperature difference power generation piece is under the action of the temperature difference in the inside of hot water tank and cold water tank and generates electricity;

[0017] 2. In the utility model, the flue gas discharged by the oxygen-rich smelting furnace enters the inside of the dust filter box through the smoke inlet pipe, the air pump operates, the connecting pipe draws out the flue gas through the filter cover, and the flue gas enters the inside of the heat exchange pipe, the flue gas flows in the heat exchange pipe, the water in the hot water tank is heated, the water is further heated, the temperature difference between the hot water tank and the cold water tank is increased, and the power generation effect is increased. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without creative labor:

[0019] Figure 1 It is the three-dimensional structure schematic diagram of the device of the utility model;

[0020] Figure 2 It is the side surface structure schematic diagram of the device of the utility model;

[0021] Figure 3 It is the half cutout structure schematic diagram of the installation place of the device of the utility model;

[0022] Figure 4 It is the half cutout structure schematic diagram of the installation place of the dust filter box in the device of the utility model;

[0023] Figure 5 It is the Figure 4 enlarged structure schematic diagram of A in the utility model;

[0024] Figure 6 It is the half cutout structure schematic diagram of the installation place of the heat exchange pipe in the device of the utility model;

[0025] In the drawings, the component list represented by each sign is as follows:

[0026] 100, cold water tank; 110, support block; 120, water adding pipe; 130, heat conducting pipe; 131, water outlet pipe; 132, water pump; 200, hot water tank; 210, slag box; 220, water inlet pipe; 230, heat exchange pipe; 240, drain pipe; 300, dust filter box; 301, limiting groove; 302, smoke inlet pipe; 310, connecting pipe; 311, air pump; 320, sealing cover plate; 321, fixed bolt; 322, rotating screw sleeve; 323, rotating gear; 324, rotating ring; 325, gear ring; 330, backflush pipe; 340, filter cover; 400, temperature difference power generation block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0028] As shown in Figures 1 to 6 The present embodiment provides a waste heat recycling device for oxygen-enriched smelting furnace, which comprises a cold water tank 100, four support blocks 110 are fixedly installed at the upper end of the cold water tank 100, a hot water tank 200 is installed at the upper end of the support block 110, a thermoelectric power generation block 400 is installed between the cold water tank 100 and the hot water tank 200, the two ends of the thermoelectric power generation block 400 are respectively inserted into the interiors of the cold water tank 100 and the hot water tank 200, a slag box 210 is arranged at the upper end of the hot water tank 200, a water inlet pipe 220 is arranged on one side of the hot water tank 200, a water outlet pipe 131 is arranged on one side of the cold water tank 100, a heat conduction pipe 130 penetrates through the interior of the slag box 210, the two ends of the heat conduction pipe 130 are respectively connected with the water inlet pipe 220 and the water outlet pipe 131, an additional water pipe 120 is arranged on one side of the cold water tank 100, a water pump 132 is arranged on one side of the interior of the cold water tank 100, the water pump 132 is connected with the water outlet pipe 131, and a drain pipe 240 is arranged on one side of the hot water tank 200.

[0029] In the present embodiment, the slag taken out from the interior of the oxygen-enriched smelting furnace is put into the interior of the slag box 210, the heat generated by the slag can be transferred to the interior of the hot water tank 200, the water in the interior of the hot water tank 200 is heated, so that the water in the interior of the hot water tank 200 is higher than the water in the interior of the cold water tank 100, the water in the interior of the cold water tank 100 enters the interior of the heat exchange pipe 230 under the action of the water pump 132 and the water outlet pipe 131, the water heated by the slag enters the interior of the hot water tank 200 through the heat exchange pipe 230 and the water inlet pipe 220, the water in the interior of the hot water tank 200 is heated, the water in the interior of the hot water tank 200 is further heated, and the thermoelectric power generation block 400 generates electricity under the action of the temperature difference between the interior of the hot water tank 200 and the interior of the cold water tank 100.

[0030] As shown in Figures 2 to 6As shown, the embodiment provides a waste heat recycling device for oxygen-enriched smelting furnace, the inside of hot water tank 200 is provided with flue gas heat recovery structure, flue gas heat recovery structure includes heat exchange pipe 230, heat exchange pipe 230 is disc-shaped, heat exchange pipe 230 is installed in the inside of hot water tank 200, both ends of heat exchange pipe 230 are located at the outside of hot water tank 200, one end of heat exchange pipe 230 is provided with connecting pipe 310, the surface of connecting pipe 310 is provided with suction pump 311, one side of hot water tank 200 is provided with dust filter box 300, dust filter box 300 is connected with connecting pipe 310, the upper end of the inside of dust filter box 300 is detachably provided with filter screen cover 340, the upper end of connecting pipe 310 is movably inserted into the inside of filter screen cover 340, one side of dust filter box 300 is provided with flue gas inlet pipe 302, the upper end of dust filter box 300 is detachably provided with sealing cover plate 320.

[0031] In the embodiment, the flue gas discharged by the oxygen-enriched smelting furnace enters the inside of dust filter box 300 through flue gas inlet pipe 302, suction pump 311 operates, connecting pipe 310 draws the flue gas through filter screen cover 340 and enters the inside of heat exchange pipe 230, the flue gas flows in heat exchange pipe 230 and heats the water in hot water tank 200, further heats the water, increases the temperature difference between hot water tank 200 and cold water tank 100, and increases the power generation effect.

[0032] As shown, the upper end of sealing cover plate 320 is provided with backflush pipe 330, the lower end of backflush pipe 330 is located in the inside of filter screen cover 340, under the action of backflush pipe 330, the inside of filter screen cover 340 can be blown, the dust adhered to the outside of filter screen cover 340 can be blown off, and the blockage of filter screen cover 340 is avoided, which affects the filtration of flue gas

[0033] As shown, Figure 4 and Figure 5 As shown, the embodiment provides a waste heat recycling device for oxygen-enriched smelting furnace, the upper end of the inside of dust filter box 300 is provided with limiting groove 301, the upper end of filter screen cover 340 is connected with limiting groove 301 and is attached with the lower end of sealing cover plate 320, both sides of the upper end of dust filter box 300 are rotatably provided with rotating screw sleeve 322, fixing bolt 321 penetrates the inside of rotating screw sleeve 322, the upper end of fixing bolt 321 is connected with sealing cover plate 320, the upper end of dust filter box 300 is rotatably provided with rotating ring 324, the inner ring of rotating ring 324 is provided with gear ring 325, the outside of rotating screw sleeve 322 is provided with rotating gear 323, rotating gear 323 is engaged with gear ring 325;

[0034] In the embodiment, the user rotates the rotating ring 324, the rotating ring 324 drives the rotating sleeve 322 to rotate through the gear ring 325 and the rotating gear 323, the fixing bolt 321 can be extracted from the inside of the rotating sleeve 322, the sealing cover plate 320 can be separated from the dust collecting box 300, the filter screen cover 340 can be extracted from the inside of the dust collecting box 300, the filter screen cover 340 is convenient to clean, and the filter screen cover 340 is prevented from being blocked.

[0035] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details, nor limit the present application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that the persons skilled in the art can well understand and utilize the present application. The present application is limited by the claims and the entire scope and equivalents thereof.

Claims

1. An apparatus for oxygen-enriched smelting furnace waste heat recovery and utilization, comprising a cold water tank (100), characterized in that: The upper end of the cold water tank (100) is fixedly provided with four supporting blocks (110), the upper end of the supporting block (110) is provided with a hot water tank (200), a thermoelectric power block (400) is arranged between the cold water tank (100) and the hot water tank (200), the two ends of the thermoelectric power block (400) are respectively inserted into the cold water tank (100) and the hot water tank (200), the upper end of the hot water tank (200) is provided with a slag box (210), one side of the hot water tank (200) is provided with a water inlet pipe (220), one side of the cold water tank (100) is provided with a water outlet pipe (131), the slag box (210) is penetrated by a heat conducting pipe (130), the two ends of the heat conducting pipe (130) are connected with the water inlet pipe (220) and the water outlet pipe (131), and the inside of the hot water tank (200) is provided with a flue gas heat energy recovery structure.

2. The apparatus for oxygen-enriched smelting furnace waste heat recovery and utilization according to claim 1, characterized in that: One side of the cold water tank (100) is provided with an added water pipe (120), one side of the inside of the cold water tank (100) is provided with a water pump (132), the water pump (132) is connected with the water outlet pipe (131), and one side of the hot water tank (200) is provided with a drain pipe (240).

3. The apparatus for oxygen-enriched smelting furnace waste heat recovery and utilization according to claim 1, characterized in that: The flue gas heat energy recovery structure comprises a heat exchange pipe (230), the heat exchange pipe (230) is disc-shaped, the heat exchange pipe (230) is arranged in the inside of the hot water tank (200), and the two ends of the heat exchange pipe (230) are located outside the hot water tank (200).

4. The apparatus for oxygen-enriched smelting furnace waste heat recovery and utilization according to claim 3, characterized in that: One end of the heat exchange pipe (230) is provided with a connecting pipe (310), the surface of the connecting pipe (310) is provided with a gas suction pump (311), one side of the hot water tank (200) is provided with a dust filter box (300), and the dust filter box (300) is connected with the connecting pipe (310).

5. The apparatus for oxygen-enriched smelting furnace waste heat recovery and utilization according to claim 4, characterized in that: The upper end of the inside of the dust filter box (300) is detachably provided with a filter screen cover (340), and the upper end of the connecting pipe (310) movably penetrates into the inside of the filter screen cover (340).

6. The apparatus for oxygen-enriched smelting furnace waste heat recovery and utilization according to claim 5, characterized in that: One side of the dust filter box (300) is provided with a smoke inlet pipe (302), the upper end of the dust filter box (300) is detachably provided with a sealing cover plate (320), the upper end of the sealing cover plate (320) is provided with a backflush pipe (330), and the lower end of the backflush pipe (330) is located in the inside of the filter screen cover (340).

7. The apparatus for oxygen-enriched smelting furnace waste heat recovery according to claim 6, characterized in that: The upper end of the inside of the dust filter box (300) is provided with a limiting groove (301), the upper end of the filter screen cover (340) is connected with the limiting groove (301) and is attached to the lower end of the sealing cover plate (320), rotating screw sleeves (322) are rotatably arranged on the two sides of the upper end of the dust filter box (300), fixed bolts (321) penetrate into the rotating screw sleeves (322), and the upper ends of the fixed bolts (321) are connected with the sealing cover plate (320).

8. The apparatus for oxygen-enriched smelting furnace waste heat recovery according to claim 7, characterized in that: The upper end of the dust filtering box (300) is rotatably installed with a rotating ring (324), the inner ring of the rotating ring (324) is provided with a gear ring (325), the outer side of the rotating screw sleeve (322) is provided with a rotating gear (323), and the rotating gear (323) is engaged with the gear ring (325).

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