Waste heat recycling device of sintering circular cooler

Abstract

The utility model relates to the technical field of waste heat recycling, and particularly discloses a waste heat recycling device of a sintering circular cooler, which comprises a dust removal structure and a heat exchange structure connected with the dust removal structure, and the dust removal structure comprises a primary cyclone dust removal assembly and a secondary cyclone dust removal assembly communicated with the top of the primary cyclone dust removal assembly. An air blowing assembly is arranged at the top of the secondary cyclone dust removal assembly; the heat exchange structure comprises a supporting frame, a first heat exchange tank and a second heat exchange tank, wherein the first heat exchange tank and the second heat exchange tank are horizontally installed on the supporting frame. Heat exchange pipe sets are arranged in the first heat exchange tank and the second heat exchange tank. The sintering circular cooler waste heat recovery device achieves efficient dust removal and waste heat recovery of high-temperature waste gas, has the advantages of being simple in structure, convenient to maintain, high in heat exchange efficiency and the like, and is suitable for the field of sintering circular cooler waste heat recovery in steel smelting and other industries.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste heat recycling technical field, concretely relates to a sintering ring cooling machine waste heat recycling device. BACKGROUND

[0002] In the steel production process, the sintering ring cooling machine is one of the important equipment, and a large amount of high-temperature waste gas will be generated in the operation process. These high-temperature waste gas contains huge energy, if directly discharged, not only will cause the waste of energy, also will produce heat pollution to the environment.

[0003] At present, although there are some technical schemes for sintering ring cooling machine waste heat recovery, there are many problems. On the one hand, the dust removal effect of the existing waste heat recovery device is poor. The sintering ring cooling machine exhaust contains a large amount of dust particles, these dusts are easy to accumulate in the heat exchange equipment, affect the heat exchange efficiency, reduce the service life of the equipment, and also may cause the follow-up pipeline blockage and other problems. On the other hand, the existing waste heat recovery device has low heat exchange efficiency. The traditional heat exchange structure design is unreasonable, the heat exchange is not sufficient, the heat in the waste gas cannot be fully transferred to the heat exchange medium, resulting in low waste heat recovery utilization rate, difficult to meet the energy saving and emission reduction and enterprise's demand for energy efficient utilization. UTILITY MODEL CONTENT

[0004] The utility model mainly is to the existing technology in sintering ring cooling machine waste heat recovery exists the dust removal effect and the problem of low heat exchange efficiency, provides a sintering ring cooling machine waste heat recycling device, realizes the efficient recycling of sintering ring cooling machine waste heat, reduces energy waste, reduces environmental pollution.

[0005] The purpose of the utility model is mainly realized through the following scheme:

[0006] A sintering ring cooling machine waste heat recycling device, including dust removal structure and heat exchange structure connected with dust removal structure, the dust removal structure includes primary cyclone dust removal component and the secondary cyclone dust removal component communicated at the top of primary cyclone dust removal component, the top of secondary cyclone dust removal component is equipped with the air blowing component;

[0007] The heat exchange structure comprises a support frame, a first heat exchange tank and a second heat exchange tank horizontally arranged on the support frame, the first heat exchange tank comprises a first front head, a first tank body and a first rear head which are connected with each other, the second heat exchange tank comprises a second front head, a second tank body and a second rear head which are connected with each other, the horizontal center axis direction of the first front head and the second front head is provided with a baffle, and the interior of the first front head and the second front head is divided into an upper chamber and a lower chamber by the baffle, the interior of the first tank body and the second tank body is provided with a heat exchange pipe group connected with the baffle; the side wall of the first front head is respectively provided with a second liquid outlet pipe communicated with the upper chamber and a second liquid inlet pipe communicated with the lower chamber, the side wall of the second front head is respectively provided with a first liquid outlet pipe communicated with the upper chamber and a first liquid inlet pipe communicated with the lower chamber, and the first liquid outlet pipe is communicated with the second liquid inlet pipe; the upper part of the side wall of the first rear head and the lower part of the side wall of the first tank body are respectively provided with a first smoke inlet pipe and a first smoke outlet pipe, the upper part of the side wall of the second tank body and the lower part of the side wall of the second rear head are respectively provided with a second smoke inlet pipe and a second smoke outlet pipe, and the first smoke outlet pipe is communicated with the second smoke inlet pipe.

[0008] Preferably, the primary cyclone dust removal assembly comprises a first cone and a first cylinder mounted on the top of the first cone, the upper and lower ends of the first cone are open, the lower end of the first cylinder is open, one side of the first cylinder is provided with a first air inlet pipe, and the top middle part of the first cylinder is communicated with a first discharge pipe arranged vertically, and the bottom of the first discharge pipe extends into the first cylinder.

[0009] Preferably, the secondary cyclone dust removal assembly comprises an ash storage hopper, a bearing disc, a first flow guide pipe, a second flow guide pipe, a connecting pipe and a plurality of cyclone dust removal groups, the upper end of the ash storage hopper is open, and the ash storage hopper is located between the first cylinder and the bearing disc, the lower end of the first flow guide pipe is open, and the upper end is closed, the lower end of the second flow guide pipe is closed, and the upper end is open, the upper and lower ends of the connecting pipe are open, and the connecting pipe, the second flow guide pipe and the first flow guide pipe are sequentially mounted from top to bottom, the top of the connecting pipe is communicated with the air inlet of the air blowing assembly, the air outlet of the air blowing assembly is communicated with the first smoke inlet pipe through a flow guide pipe, the bottom of the first flow guide pipe is connected with the bearing disc, the top of the first discharge pipe is communicated with the first flow guide pipe on the bearing disc after passing through the ash storage hopper, and the cyclone dust removal groups are mounted on the bearing disc.

[0010] As preferred, the cyclone dust removal group comprises a second cone and a second cylinder mounted on the top of the second cone, the upper and lower ends of the second cone are open, the lower end of the second cylinder is open, a second air inlet pipe communicated with the first flow guide pipe is mounted on one side of the second cylinder, and a second air outlet pipe communicated with the second flow guide pipe is arranged in the middle of the top of the second cylinder, and the bottom of the second air outlet pipe extends into the second cylinder, the bearing disc is provided with through holes corresponding to the bottoms of the second cones, and the bottoms of the second cones are communicated with the ash hopper through the through holes.

[0011] As preferred, the bottoms of the first air outlet pipe and the second air outlet pipe are provided with filter screens.

[0012] As preferred, the heat exchange pipe group comprises a plurality of U-shaped heat exchange pipes and an end plate, one side of the end plate is fixedly connected with the end of the baffle, and the outer side walls of the end plate are respectively sealingly connected with the inner side walls of the corresponding first tank body and second tank body, the two ends of the U-shaped heat exchange pipe are mounted on the end plate, the two ends of the U-shaped heat exchange pipe are respectively a liquid inlet and a liquid outlet, and the liquid inlet is communicated with the lower chamber and the liquid outlet is communicated with the upper chamber.

[0013] As preferred, the side wall of the U-shaped heat exchange pipe is provided with a plurality of turbulence vanes equidistantly arranged along the length direction of the U-shaped heat exchange pipe, and the adjacent turbulence vanes are arranged in an up-and-down staggered manner.

[0014] As preferred, the surface of the turbulence vane is coated with a heat-conducting coating.

[0015] Therefore, compared with the prior art, the utility model has the following advantages:

[0016] (1) the utility model discloses a primary cyclone dust removal assembly and a secondary cyclone dust removal assembly are arranged, the primary cyclone dust removal assembly preliminarily removes the large particle dust in waste gas, and the multiple cyclone dust removal groups in the secondary cyclone dust removal assembly further finely remove the dust in waste gas, the two-stage dust removal design greatly improves the dust removal efficiency, can effectively reduce the dust content in waste gas, reduces the influence of dust on heat exchange equipment, prolongs the service life of equipment, and simultaneously reduces the pollution of dust emission to the environment.

[0017] (2) the utility model discloses a first heat exchange tank and a second heat exchange tank and the heat exchange pipe group in the inside are arranged in series, so that the heat exchange medium and high-temperature waste gas can fully exchange heat, the U-shaped heat exchange pipe increases the heat exchange area and the flow length of the heat exchange medium, and is matched with the turbulence vane and the heat-conducting coating, further improves the heat transfer speed, thereby significantly improves the waste heat recovery efficiency and improves the energy utilization rate.

[0018] (3) The utility model discloses a filter screen set in the bottom of the first discharge pipe and the second discharge pipe can prevent the dust of larger particles from entering the subsequent pipeline and equipment, and meanwhile, the setting of the ash storage hopper facilitates the collection and cleaning of the dust and reduces the difficulty and cost of equipment maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the utility model;

[0020] Figure 2 It is the exploded schematic view of dust removal mechanism in the utility model;

[0021] Figure 3 It is another angle exploded schematic view of dust removal mechanism in the utility model;

[0022] Figure 4 It is the internal structure schematic view of the first flow guide pipe and the second cylinder in the utility model;

[0023] Figure 5 It is another angle exploded schematic view of two-stage cyclone dust removal assembly in the utility model;

[0024] Figure 6 It is the structural schematic view of heat exchange structure in the utility model;

[0025] Figure 7 It is the internal structure schematic view of heat exchange structure in the utility model;

[0026] Figure 8 It is the structural schematic view of heat exchange pipe group in the utility model.

[0027] Brief Description of Drawings: 1-dust removal structure; 2-heat exchange structure; 3-one-stage cyclone dust removal assembly; 4-two-stage cyclone dust removal assembly; 5-blast assembly; 6-support frame; 7-first heat exchange tank; 8-second heat exchange tank; 9-first front head; 10-first tank body; 11-first rear head; 12-second front head; 13-second tank body; 14-second rear head; 15-baffle; 16-upper chamber; 17-lower chamber; 18-heat exchange pipe group; 19-second liquid outlet pipe; 20-second liquid inlet pipe; 21-first liquid outlet pipe; 22-first liquid inlet pipe; 23-first smoke inlet pipe; 24-first smoke outlet pipe; 25-second smoke inlet pipe; 26-second smoke outlet pipe; 27-first cone body; 28-first cylinder body; 29-first air inlet pipe; 30-first discharge pipe; 31-ash storage hopper; 32-bearing disc; 33-first flow guide pipe; 34-second flow guide pipe; 35-connection pipe; 36-cyclone dust removal group; 37-drainage pipe; 38-second cone body; 39-second cylinder body; 40-second air inlet pipe; 41-second discharge pipe; 42-filter screen; 43-U-shaped heat exchange pipe; 44-end plate; 45-turbolator. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be further described in detail below with specific examples and in conjunction with the drawings. It should be understood that the implementation of the present application is not limited to the following examples, and any form of modification and / or change of the present application will fall within the scope of the present application.

[0029] In the present application, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used can be purchased from the market or commonly used in the art. The methods in the following examples, unless otherwise specified, are conventional methods in the art. The components or equipment in the following examples, unless otherwise specified, are general standard components or components known to those skilled in the art, and their structure and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0030] Example 1:

[0031] As shown in Figure 1 , 2 , the present application provides a technical solution, a sintering ring cooler waste heat recycling device, comprising a dust removal structure 1 and a heat exchange structure 2 connected with the dust removal structure 1.

[0032] The dust removal structure 1 comprises a first cyclone dust removal assembly 3 and a second cyclone dust removal assembly 4 communicated at the top of the first cyclone dust removal assembly 3, and the top of the second cyclone dust removal assembly 4 is provided with a blowing assembly 5, which introduces the high-temperature delayed flow after dust removal to the heat exchange mechanism 2 for heat exchange; the heat exchange structure 2 comprises a support frame 6 and a first heat exchange tank 7 and a second heat exchange tank 8 horizontally arranged on the support frame 6 by welding or bolt connection, and the first heat exchange tank 7 and the second heat exchange tank 8 are arranged in series.

[0033] By setting two-stage cyclone dust removal assembly, the high-temperature waste gas discharged from the sintering ring cooler is gradually purified, the dust content in the waste gas is reduced, and the damage of dust to the subsequent heat exchange equipment is prevented; in terms of heat exchange structure, the double heat exchange tank structure in series is adopted, so that the heat exchange medium and the flue gas form a specific flow path in the tank, the heat exchange time and area are increased, and the heat exchange efficiency is improved.

[0034] Specifically, the first heat exchange tank 7 comprises a first front head 9, a first tank body 10 and a first rear head 11 connected with each other by bolts, the second heat exchange tank 8 comprises a second front head 12, a second tank body 13 and a second rear head 14 connected with each other by bolts, the horizontal center axis direction of the first front head 9 and the second front head 12 is welded with a baffle 15, and the interior of the first front head 9 and the second front head 12 is divided into an upper chamber 16 and a lower chamber 17 by the baffle 15, the interior of the first tank body 10 and the second tank body 13 is respectively provided with a heat exchange pipe group 18 connected with the baffle 15, the heat exchange pipe group 18 is communicated with the upper chamber 16 and the lower chamber 17, and the circulation of the heat exchange medium is realized; the side wall of the first front head 9 is respectively provided with a second liquid outlet pipe 19 communicated with the upper chamber 16 and a second liquid inlet pipe 20 communicated with the lower chamber 17, the side wall of the second front head 12 is respectively provided with a first liquid outlet pipe 21 communicated with the upper chamber 16 and a first liquid outlet pipe 22 communicated with the lower chamber 17, and the first liquid outlet pipe 21 is communicated with the second liquid inlet pipe 20; the upper part of the side wall of the first rear head 11 and the lower part of the side wall of the first tank body 10 are respectively provided with a first smoke inlet pipe 23 and a first smoke outlet pipe 24, the first smoke outlet pipe 24 is arranged close to the first rear head 11, the upper part of the side wall of the second tank body 13 and the lower part of the side wall of the second rear head 14 are respectively provided with a second smoke inlet pipe 25 and a second smoke outlet pipe 26, the second smoke inlet pipe 25 is arranged close to the second front head 12, and the first smoke outlet pipe 24 and the second smoke inlet pipe 25 are communicated.

[0035] Heat exchange process: the heat exchange medium enters the lower chamber 17 of the second heat exchange tank 8 from the second liquid inlet pipe 20, enters the upper chamber 16 after absorbing the heat of the flue gas by flowing through the heat exchange pipe group 18, is transported to the second heat exchange tank 8 through the first liquid outlet pipe 21, and is finally output as high-temperature medium by the second liquid outlet pipe 19.

[0036] Flue gas path: the flue gas enters the first tank body 10 from the first smoke inlet pipe 23, enters the second tank body 13 through the first smoke outlet pipe 24 after heat exchange with the heat exchange medium, and is finally discharged as low-temperature waste gas from the second smoke outlet pipe 26, so that the waste heat is efficiently utilized.

[0037] Example 2:

[0038] As Figure 2 , 3As shown, the utility model provides another technical scheme, a kind of sintering circular cooler waste heat recycling device, and the difference from embodiment 1 is that first cyclone dust removal component 3 includes first cone 27 and first cylinder 28 installed at the top of first cone 27, first cone 27 and first cylinder 28 are threadedly connected or bolted, the upper and lower ends of first cone 27 are both opened, the bottom of first cone 27 is ash outlet, the lower end of first cylinder 28 is opened, first cylinder 28 is equipped with first air inlet pipe 29 on one side along its tangent direction, and first cylinder 28 is communicated with the first discharge pipe 30 vertically arranged in the top middle part, and the bottom of first discharge pipe 30 extends into first cylinder 28.

[0039] Specifically, second cyclone dust removal component 4 includes ash hopper 31, bearing disc 32, first flow guide pipe 33, second flow guide pipe 34, connecting pipe 35 and several cyclone dust removal groups 36, the upper end of ash hopper 31 is opened, and ash hopper 31 is located between first cylinder 28 and bearing disc 32, bearing disc 32 is buckled at the opening of ash hopper 31, the lower end of first flow guide pipe 33 is opened, and the upper end is closed, the lower end of second flow guide pipe 34 is closed, and the upper end is opened, the upper and lower ends of connecting pipe 35 are both opened, and connecting pipe 35, second flow guide pipe 34 and first flow guide pipe 33 are installed from top to bottom in sequence, connecting pipe 35, second flow guide pipe 34 and first flow guide pipe 33 are bolted or welded, the top of connecting pipe 35 is communicated with the air inlet of air blowing component 5, and the air outlet of air blowing component 5 is communicated with first smoke inlet pipe 23 through flow guide pipe 37, the bottom of first flow guide pipe 33 is fixedly connected with the middle part of bearing disc 32, and the top of first discharge pipe 30 is communicated with first flow guide pipe 33 on bearing disc 32 after passing through ash hopper 31, cyclone dust removal group 36 is installed on bearing disc 32, and the upper part of first discharge pipe 30 is provided with external thread in the embodiment, and threaded hole is formed in the middle part of bearing disc 32, first discharge pipe 30 is threadedly connected with the threaded hole of bearing disc 32 after passing through ash hopper 31, and ash hopper 31 can be clamped between first cylinder 28 and bearing disc 32.

[0040] Specifically, as shown in the figure, Figure 4 、 5As shown, five groups of cyclone dust removal groups 36 are uniformly circumferentially arranged along the axis of the first flow guide pipe 33 in the embodiment, each of the cyclone dust removal groups 36 comprises a second cone 38 and a second cylinder 39 mounted on the top of the second cone 38, the second cone 38 is welded or bolted with the second cylinder 39, the upper and lower ends of the second cone 38 are both open, the lower end of the second cylinder 39 is open, a second air inlet pipe 40 is mounted on the side of the second cylinder 39 along the tangent direction of the second cylinder 39 and is in communication with the inside of the first flow guide pipe 33, and a second air outlet pipe 41 is arranged on the top of the second cylinder 39 and is in communication with the inside of the second flow guide pipe 34, the bottom of the second air outlet pipe 41 extends into the second cylinder 39, and the bottom of the second cone 38 is in communication with the ash hopper 31 through the through hole.

[0041] The high-temperature exhaust gas enters the first cylinder 28 and the first cone 27 from the first air inlet pipe 29 of the first-stage cyclone dust removal assembly 3, is centrifugally separated, and then enters the cyclone dust removal group 36 of the second-stage cyclone dust removal assembly 4 through the first air outlet pipe 30 and the first flow guide pipe 33, is centrifugally separated by the second cylinder 39 and the second cone 39 to perform secondary purification, and the purified flue gas is conveyed by the blast assembly 5 to the heat exchange structure 2 through the second flow guide pipe 34 and the connecting pipe 35, and the blast assembly 5 can be a pressurized fan on the market.

[0042] Specifically, the bottom of the first air outlet pipe 30 and the bottom of the second air outlet pipe 41 are detachably fixedly connected with a filter screen 42, which can prevent larger particles of dust from entering subsequent pipelines and equipment.

[0043] Embodiment 3:

[0044] As shown in the drawings, Figure 6 , 7 The utility model provides another technical scheme, a kind of sintering ring cooling machine waste heat recycling device, and the difference from embodiment 1 is that heat exchange pipe group 18 includes several U-shaped heat exchange pipes 43 and end plate 44, one side of end plate 44 is welded fixed with the end of baffle 15, and the outer side wall of end plate 44 is respectively sealed welded with the inner side wall of corresponding first tank body 10, second tank body 13, the two ends of U-shaped heat exchange pipe 43 are both installed on end plate 44, the two ends of U-shaped heat exchange pipe 43 are inlet and outlet respectively, and inlet is communicated with lower chamber 17, and outlet is communicated with upper chamber 16.

[0045] Specifically, as shown in the drawings, Figure 7 The side wall of U-shaped heat exchange pipe 43 is equidistantly welded with multiple spoiler plates 45 along its length direction, and adjacent spoiler plates 45 are arranged in up-down staggered mode, and the side wall of spoiler plate 45 is also welded with the inner wall of tank body, to ensure the stability of U-shaped heat exchange pipe 43.

[0046] Specifically, the surface of the spoiler 45 is coated with a heat-conducting coating, which can be a graphene-based coating, a metal-ceramic composite coating, or an Al2O3-ZrO2 composite coating.

[0047] The working principle of the sintering ring cooler waste heat recycling device is as follows:

[0048] 1. The high-temperature exhaust gas discharged from the sintering ring cooler first enters the first cyclone dust removal assembly 3. The exhaust gas enters the first cylinder 28 from the first inlet pipe 29. Under the action of centrifugal force, large-particle dust is thrown to the inner wall of the first cylinder 28 and falls along the first cone 27. The preliminarily purified exhaust gas is discharged from the first discharge pipe 30 through the filter screen 42.

[0049] 2. The discharged exhaust gas enters the second cyclone dust removal assembly 4. The exhaust gas enters the first flow guide pipe 33 through the first discharge pipe 30, and then enters the cyclone dust removal group 36 through the second inlet pipe 40. In the cyclone dust removal group 36, the exhaust gas is subjected to the action of centrifugal force again, and fine dust is further separated out and falls into the ash storage hopper 31 along the second cone 38. The exhaust gas after two-stage dust removal is discharged from the second discharge pipe 41, enters the second flow guide pipe 34, and then enters the air blowing assembly 5 through the connecting pipe 35.

[0050] 3. The air blowing assembly 5 sends the dust-removed exhaust gas into the first smoke inlet pipe 23 through the flow guide pipe 37. The exhaust gas enters the first heat exchange tank 7 and exchanges heat with the heat exchange medium in the heat exchange pipe group 18 in the first tank body 10. The exhaust gas with reduced temperature is discharged from the first smoke outlet pipe 24, enters the second smoke inlet pipe 25, and continues to exchange heat with the heat exchange medium in the heat exchange pipe group 18 in the second heat exchange tank 8. Finally, the exhaust gas is discharged from the second smoke outlet pipe 26.

[0051] 4. The heat exchange medium enters the lower chamber 17 of the second heat exchange tank 8 from the first liquid inlet pipe 22, then enters the U-shaped heat exchange pipe 43 through the liquid inlet of the U-shaped heat exchange pipe 43, absorbs the heat of the exhaust gas in the U-shaped heat exchange pipe, and then enters the upper chamber 16 from the liquid outlet after the heat exchange. The heat exchange medium enters the lower chamber 17 of the first heat exchange tank 7 through the first liquid outlet pipe 21, and repeats the above process. Finally, the heat exchange medium flows out from the second liquid outlet pipe 19, and the waste heat recovery process is completed.

[0052] In a certain steel plant 250m 2For example, the sintering machine: sintering flue gas (350℃) through the first inlet pipe 29 into the tangential first cyclone dust removal assembly 3, coarse particles (> 50 μm) to the bottom of the cone, the preliminary purification of flue gas through the first exhaust pipe 30 into the second cyclone dust removal assembly 4, in a plurality of parallel cyclone dust removal group 36 complete fine dust (< 10 μm) separation, clean flue gas by the blast assembly 5 after pressurization into the heat exchange structure; in the second heat exchange tank 8, 160℃ soft water from the first inlet pipe 22 into the lower chamber 17, through the U-shaped heat exchange pipe 43 to absorb the heat of flue gas to 220℃, through the first outlet pipe 21 output to the first heat exchange tank 7, in the first heat exchange tank 7, 220℃ hot water continues to heat in the first heat exchange tank 7 to 280℃, finally output to the steam pipe network; flue gas after two-stage heat exchange temperature dropped to 120℃ or less emissions.

[0053] It should be understood that the embodiments are only used to illustrate the present application and not used to limit the scope of the present application. In addition, it should be understood that after reading the content taught by the present application, those skilled in the art can make various changes or modifications to the present application, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims

1. A sintering ring cooling machine waste heat recycling device, comprising a dust removal structure (1) and a heat exchange structure (2) connected with the dust removal structure (1), characterized in that: The dust removal structure (1) comprises a primary cyclone dust removal assembly (3) and a secondary cyclone dust removal assembly (4) communicated with the top of the primary cyclone dust removal assembly (3), and the top of the secondary cyclone dust removal assembly (4) is provided with a blast assembly (5). The heat exchange structure (2) comprises a support frame (6), a first heat exchange tank (7) and a second heat exchange tank (8) horizontally arranged on the support frame (6), the first heat exchange tank (7) comprises a first front head (9), a first tank body (10) and a first rear head (11) connected with each other, the second heat exchange tank (8) comprises a second front head (12), a second tank body (13) and a second rear head (14) connected with each other, the horizontal center axis direction of the first front head (9) and the second front head (12) is provided with a baffle (15), and the interior of the first front head (9) and the second front head (12) is divided into an upper chamber (16) and a lower chamber (17) by the baffle (15), the interior of the first tank body (10) and the second tank body (13) is provided with a heat exchange pipe group (18) connected with the baffle (15); the side wall of the first front head (9) is respectively provided with a second liquid outlet pipe (19) communicated with the upper chamber (16) and a second liquid inlet pipe (20) communicated with the lower chamber (17), the side wall of the second front head (12) is respectively provided with a first liquid outlet pipe (21) communicated with the upper chamber (16) and a first liquid inlet pipe (22) communicated with the lower chamber (17), and the first liquid outlet pipe (21) is communicated with the second liquid inlet pipe (20); the upper part of the side wall of the first rear head (11) and the lower part of the side wall of the first tank body (10) are respectively provided with a first smoke inlet pipe (23) and a first smoke outlet pipe (24), the upper part of the side wall of the second tank body (13) and the lower part of the side wall of the second rear head (14) are respectively provided with a second smoke inlet pipe (25) and a second smoke outlet pipe (26), and the first smoke outlet pipe (24) is communicated with the second smoke inlet pipe (25).

2. The sinter ring cooler waste heat recovery and utilization device according to claim 1, characterized in that: The primary cyclone dust removal assembly (3) comprises a first cone (27) and a first cylinder (28) installed at the top of the first cone (27), the upper and lower ends of the first cone (27) are open, the lower end of the first cylinder (28) is open, one side of the first cylinder (28) is provided with a first air inlet pipe (29), and the top middle part of the first cylinder (28) is communicated with a vertical first discharge pipe (30), and the bottom of the first discharge pipe (30) extends into the first cylinder (28).

3. The sinter ring cooler waste heat recovery and utilization device according to claim 2, characterized in that: The secondary cyclone dust removal assembly (4) comprises a dust storage hopper (31), a bearing disc (32), a first flow guide pipe (33), a second flow guide pipe (34), a connecting pipe (35) and a plurality of cyclone dust removal groups (36), the upper end of the dust storage hopper (31) is open, and the dust storage hopper (31) is located between the first cylinder (28) and the bearing disc (32), the lower end of the first flow guide pipe (33) is open, and the upper end is closed, the lower end of the second flow guide pipe (34) is closed, and the upper end is open, the upper and lower ends of the connecting pipe (35) are open, and the connecting pipe (35), the second flow guide pipe (34) and the first flow guide pipe (33) are sequentially installed from top to bottom, the top of the connecting pipe (35) is in communication with the air inlet of the air blowing assembly (5), the air outlet of the air blowing assembly (5) is in communication with the first smoke inlet pipe (23) through a flow guide pipe (37), the bottom of the first flow guide pipe (33) is connected with the bearing disc (32), and the top of the first discharge pipe (30) is in communication with the first flow guide pipe (33) on the bearing disc (32) after penetrating through the dust storage hopper (31), and the cyclone dust removal group (36) is installed on the bearing disc (32).

4. The sinter ring cooler waste heat recovery and utilization device according to claim 3, characterized in that: The cyclone dust removal group (36) comprises a second cone (38) and a second cylinder (39) installed on the top of the second cone (38), the upper and lower ends of the second cone (38) are open, the lower end of the second cylinder (39) is open, one side of the second cylinder (39) is provided with a second air inlet pipe (40) in communication with the first flow guide pipe (33), and the top middle part of the second cylinder (39) is provided with a second discharge pipe (41) in communication with the second flow guide pipe (34), and the bottom of the second discharge pipe (41) extends into the second cylinder (39), the bearing disc (32) is provided with a through hole corresponding to the bottom of the second cone (38), and the bottom of the second cone (38) is communicated with the dust storage hopper (31) through the through hole.

5. The sinter ring cooler waste heat recovery and utilization device according to claim 4, characterized in that: The bottom of the first discharge pipe (30) and the bottom of the second discharge pipe (41) are both provided with a filter screen (42).

6. The sinter ring cooler waste heat recovery and utilization device according to claim 1, characterized in that: The heat exchange pipe group (18) comprises a plurality of U-shaped heat exchange pipes (43) and an end plate (44), one side of the end plate (44) is fixedly connected with the end of the baffle (15), and the outer side walls of the end plate (44) are respectively sealingly connected with the inner side walls of the corresponding first tank body (10) and second tank body (13), the two ends of the U-shaped heat exchange pipe (43) are both installed on the end plate (44), the two ends of the U-shaped heat exchange pipe (43) are respectively a liquid inlet and a liquid outlet, and the liquid inlet is communicated with the lower chamber (17), and the liquid outlet is communicated with the upper chamber (16).

7. The sinter ring cooler waste heat recovery and utilization device according to claim 6, characterized in that: A plurality of turbulence vanes (45) are equidistantly arranged on the side wall of the U-shaped heat exchange pipe (43) along the length direction, and the adjacent turbulence vanes (45) are arranged in an up-down staggered manner.

8. The sinter ring cooler waste heat recovery and utilization device according to claim 7, characterized in that: The surface of the turbulence vane (45) is coated with a heat-conducting coating.

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