High-temperature slag heat energy utilization device

Abstract

The invention discloses a high-temperature slag heat energy utilization device which comprises a slag tank, a tundish, a circulating water tank, a circulating pump, a slag funnel, a jacket, a water outlet pipe and a water return pipe, the slag tank is hung on a crown block and located above the tundish, the slag funnel is located below a pouring water opening in the bottom of the tundish, the jacket is attached to the outer wall of the slag funnel, and the water outlet pipe is connected with the water return pipe. The circulating water tank is connected with a water source through the make-up pump and provides hot water for users through the drainage pump, two ends of the water outlet pipe are connected with the circulating water tank and the bottom of the jacket respectively, the circulating pump is mounted on the water outlet pipe, one end of the water return pipe is connected with a water outlet in the top of the jacket, and the other end of the water return pipe is connected with a water return port of the circulating water tank. According to the system, the high-temperature slag is used as a heat source, domestic hot water is prepared in a multi-stage heat exchange mode, waste heat of the high-temperature slag can be fully recycled, sufficient hot water is provided for people, energy waste is avoided, slag particles can be recycled, and therefore environmental pollution is reduced.

Description

Technical Field

[0001] The invention relates to a high-temperature slag heat energy utilization device, which can utilize the waste heat of the high-temperature slag generated in the steel smelting process to prepare domestic hot water, and belongs to the technical field of metallurgical equipment. Background Art

[0002] Slag is a byproduct produced during the steel smelting process. Its temperature is between 1000℃ and 1550℃. It has the physical property of solid-liquid phase change and is a high-quality waste heat resource. Efficient recycling of waste heat is of great significance to energy conservation and emission reduction in the steel industry and improving the utilization rate of secondary energy. However, the current treatment of slag mainly adopts water quenching or natural cooling. Not only is the sensible heat of the high-temperature slag not fully recycled, resulting in a large amount of water resources being wasted, but also the large amount of fine particles and gases such as SO2 and H2S generated during the water quenching process will cause serious pollution to the environment. In addition, some of the high-temperature water produced by water quenching is corrosive, has high hardness, and has high suspended matter, which is difficult to recycle.

[0003] Therefore, it is very necessary to design a high-temperature slag heat energy utilization device that can fully recycle and utilize the slag waste heat, avoid energy waste, and effectively reduce environmental pollution. Summary of the invention

[0004] The purpose of the present invention is to provide a high-temperature slag heat energy utilization device to address the shortcomings of the prior art, so as to fully recycle and utilize the slag waste heat, avoid energy waste, and reduce environmental pollution.

[0005] To achieve the above object, the present invention adopts the following technical solution: A high-temperature slag heat energy utilization device comprises a slag pot, a tundish, a circulating water tank, a circulating pump, a slag funnel, a jacket, a water outlet pipe and a water return pipe, wherein the slag pot is hung on a crown block and is located above the tundish, the slag funnel is located below the pouring water outlet at the bottom of the tundish, the jacket is mounted on the outer wall of the slag funnel, the circulating water tank is connected to a water source through a water supply pump and provides hot water to users through a drainage pump, the two ends of the water outlet pipe are respectively connected to the bottom of the circulating water tank and the jacket, the circulating pump is installed on the water outlet pipe, one end of the return pipe is connected to the water outlet at the top of the jacket, and the other end is connected to the water return port of the circulating water tank.

[0006] The above-mentioned high-temperature slag heat energy utilization device also includes a box heat exchange device, which includes a heat exchange box, a heat exchange tube and a hot water pump. The heat exchange box is located inside the slag funnel and is connected to the roof of the factory building through fixed columns. The heat exchange tube is located in the heat exchange medium inside the heat exchange box. One end of the heat exchange tube is connected to the water source through a low-temperature water pipe, and the other end is connected to the water inlet end of the hot water pump through a high-temperature water pipe. The water outlet end of the hot water pump is connected to the user's hot water pipe.

[0007] The above-mentioned high-temperature slag heat energy utilization device also includes a phase-change dust removal and heat exchange device, which includes a delivery pump, an evaporator, a steam-water heat exchange tank, a cyclone scrubber, an induced draft fan, an upper inclined plate, a clean water tank and a clean water pump. The feed port at the top of the evaporator is connected to the discharge port at the bottom of the slag funnel, and the bottom is provided with a discharge port; the water inlet end of the delivery pump is connected to the circulating water tank through a pipeline, and the water outlet end is connected to the water inlet at the upper end of the side wall of the evaporator; the upper inclined plate is located inside the evaporator, and the high end of the upper inclined plate is located below the water inlet at the upper end of the side wall of the evaporator The steam-water heat exchange tank is square and fixedly connected to the inner wall of the evaporator; a sedimentation tank is provided at the bottom of the steam-water heat exchange tank, and an atomizing nozzle is provided at the top, the atomizing nozzle is connected to the user's hot water pipeline, the steam inlet at the lower part of one end of the steam-water heat exchange tank is connected to the steam outlet at the upper part of the side wall of the evaporator through the steam pipeline, the steam outlet at the upper part of the other end of the steam-water heat exchange tank is connected to the inlet of the cyclone scrubber, and the outlet of the cyclone scrubber is connected to the induced draft fan; the water inlet of the clean water tank is connected to the drain port at the bottom of the side wall of the steam-water heat exchange tank, and the water outlet provides domestic hot water to the user through a clean water pump.

[0008] The above-mentioned high-temperature slag heat energy utilization device is provided with a plurality of upper partitions and lower partitions arranged at equal intervals along its length direction inside the steam-water heat exchange tank, the upper end of the upper partition is connected to the top plate of the steam-water heat exchange tank, and the lower end of the lower partition is connected to the bottom plate of the steam-water heat exchange tank. The upper partition and the lower partition divide the inner cavity of the steam-water heat exchange tank into a plurality of heat exchange chambers, and the tops or bottoms of any two adjacent heat exchange chambers are connected.

[0009] In the above-mentioned high-temperature slag heat energy utilization device, an atomizing nozzle is installed on the top of each heat exchange chamber, and each atomizing nozzle is connected to the water inlet main pipe through a water inlet branch pipe, and the water inlet main pipe is connected to the user's hot water pipeline.

[0010] The above-mentioned high-temperature slag heat energy utilization device also includes a slurry valve and a slurry pump. A plurality of sedimentation tanks corresponding to the heat exchange chambers are arranged at the bottom of the steam-water heat exchange tank, and the bottom of the sedimentation tank is connected to the inlet of the slurry pump through the slurry valve.

[0011] In the above-mentioned high-temperature slag heat energy utilization device, a lower inclined plate is provided below the upper inclined plate, and the high ends of the upper inclined plate and the lower inclined plate are respectively connected to the inner walls on both sides of the evaporation tank.

[0012] In the above-mentioned high-temperature slag heat energy utilization device, vibrators are fixed on the bottom surfaces of the upper inclined plate and the lower inclined plate.

[0013] The high-temperature molten slag heat energy utilization device further comprises a belt conveyor and a cold slag bin. The belt conveyor is located below the discharge port at the bottom of the evaporator, and the discharge end of the belt conveyor is opposite to the feed port of the cold slag bin.

[0014] The above-mentioned high-temperature slag heat energy utilization device also includes a slurry filtering device, which includes a buffer tank and a filter press. The inlet of the buffer tank is connected to the outlet of the slurry pump, and the outlet of the buffer tank is connected to the filter press.

[0015] The present invention uses high-temperature slag as a heat source and adopts a multi-stage heat exchange method to prepare domestic hot water, which can not only fully recover the waste heat of the high-temperature slag to provide people with sufficient hot water and avoid energy waste, but also recycle the slag particles, thereby reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of a box heat exchange device; Figure 3 It is a schematic diagram of the structure of the partition heat exchange device; Figure 4 It is a structural schematic diagram of a phase change dust removal and heat exchange device.

[0018] The numbers in the figure are as follows: 1. overhead crane; 2. slag tank; 3. tundish; 4. fixed column; 5. low-temperature water pipe; 6. circulating water tank; 7. drainage pump; 8. water supply pump; 9. circulating pump; 10. jacket; 11. delivery pump; 12. hot water pump; 13. water inlet main pipe; 14. water inlet branch pipe; 15. sedimentation tank; 16. slurry valve; 17. slurry pump; 18. cyclone scrubber; 19. induced draft fan; 20. clean water tank; 21. clean water pump; 22. buffer tank; 23. pressure filter; 24, evaporator; 25, belt conveyor; 26, cold slag bin; 27, high-temperature water pipe; 28, heat exchange pipe; 29, heat exchange box; 30, flow valve; 31, steam pipe; 32, slag funnel; 33, atomizing nozzle; 34, lower partition; 35, pouring water outlet; 36, drain pipe; 37, outlet pipe; 38, return pipe; 39, upper inclined plate; 40, lower inclined plate; 41, steam-water heat exchange tank; 42, user hot water pipe; 43, vibrator; 44, upper partition. DETAILED DESCRIPTION

[0019] In view of the problems existing in the prior art, the present invention provides a high-temperature slag heat energy utilization device, which can fully recycle and utilize the slag waste heat and reduce pollution to the surrounding environment.

[0020] See also Figure 1-Figure 4 The present invention includes a slag conveying and discharging device, a box heat exchange device, a partition heat exchange device, a phase change dust removal and heat exchange device, and a slurry filtering device.

[0021] The slag conveying device includes a crown crane 1, a slag pot 2, a tundish 3, a belt conveyor 25, and a cold slag bin 26. The crown crane 1 is arranged on the upper part of the slag pot 2, the tundish is arranged on the lower part of the slag pot 2, a pouring nozzle 35 for controlling the pouring amount is arranged on one side of the bottom of the tundish 3, and the belt conveyor 25 is arranged on the upper part of the cold slag bin 26, and the discharge end of the belt conveyor 25 is opposite to the feed port of the cold slag bin 26.

[0022] The box heat exchange device includes a low-temperature water pipe 5, a high-temperature water pipe 27, a hot water pump 12, a U-shaped heat exchange pipe 28, a heat exchange box 29, and a fixed column 4. One end of the fixed column 4 is connected to the roof of the plant, and the other end is connected to the heat exchange box 29. The heat exchange pipe 28 is located in the heat exchange medium inside the heat exchange box 29. One end of the heat exchange pipe 28 is connected to the low-temperature water pipe 5, and the other end is connected to the high-temperature water pipe 27. The hot water pump 12 is arranged at the water outlet of the high-temperature water pipe 27.

[0023] The partition heat exchange device includes a circulating water tank 6, a drainage pump 7, a water supply pump 8, a circulating pump 9, a jacket 10, a slag hopper 32, a drainage pipe 36, a water outlet pipe 37, and a water return pipe 38. The jacket 10 is arranged on the outer wall of the slag hopper 32, the heat exchange box 29 is located inside the slag hopper 32, one end of the water outlet pipe 37 is connected to the water outlet at the bottom of the circulating water tank 6, and the other end is connected to the water inlet at the bottom of the jacket 10, the circulating pump 9 is installed on the water outlet pipe 37, one end of the water return pipe 38 is connected to the water outlet at the top of the jacket 10, and the other end is connected to the water return port of the circulating water tank 6; the water inlet end of the water supply pump 8 is connected to the water source, and the water outlet end is connected to the water supply port at the top of the circulating water tank 6; one end of the drainage pipe 36 is connected to the drainage port of the circulating water tank 6, and the other end provides hot water to the user, and the drainage pump 7 is installed on the drainage pipe 36.

[0024] The phase change dust removal and heat exchange device includes a delivery pump 11, a flow valve 30, an evaporation tank 24, a vibrator 43, a water inlet main pipe 13, a water inlet branch pipe 14, a sedimentation tank 15, a slurry valve 16, a slurry pump 17, a cyclone scrubber 18, an induced draft fan 19, an atomizing nozzle 33, an upper partition 44, a lower partition 34, an upper inclined plate 39, a lower inclined plate 40, a steam-water heat exchange tank 41, a clean water tank 20 and a clean water pump 21. The evaporation tank 24 is arranged at the lower part of the slag funnel 32, the feed port at the top of the evaporation tank 24 is connected to the discharge port at the bottom of the slag funnel 32, and the discharge port at the bottom is opposite to the belt conveyor 25. The upper inclined plate 39 and the lower inclined plate 40 are located inside the evaporation tank 24 and arranged up and down. The high end of the upper inclined plate 39 is fixedly connected to the middle and upper part of the inner wall on one side of the evaporation tank 24, and the high end of the lower inclined plate 40 is fixedly connected to the middle and lower part of the inner wall on the other side of the evaporation tank 24. The water inlet end of the delivery pump 11 is connected to the circulating water tank 6 through a pipeline, and the water outlet end is connected to the water inlet at the upper end of the side wall of the evaporation tank 24 through a flow valve 30. The water inlet is located above the high end of the upper inclined plate 39. Vibrators 43 are fixed on the bottom surfaces of the upper inclined plate 39 and the lower inclined plate 40. The steam-water heat exchange tank 41 is provided with a plurality of The upper partitions 44 and the lower partitions 34 are arranged at equal intervals in the direction, the upper end of the upper partition 44 is connected to the top plate of the steam-water heat exchange tank 41, and the lower end of the lower partition 34 is connected to the bottom plate of the steam-water heat exchange tank 41. The upper partition 44 and the lower partition 34 divide the inner cavity of the steam-water heat exchange tank 41 into a plurality of heat exchange chambers, and the tops or bottoms of any two adjacent heat exchange chambers are connected. Atomizing nozzles 33 are installed on the top of the heat exchange chambers, and each atomizing nozzle 33 is connected to the water inlet main pipe 13 through a water inlet branch pipe 14, and the water inlet main pipe 13 is connected to the user hot water pipe 42 at the outlet end of the hot water pump 12. A plurality of sedimentation tanks 15 are arranged at the bottom of the steam-water heat exchange tank 41, and the bottom of the sedimentation tank 15 is connected to the inlet end of the slurry valve 16 through a slurry pipe, and the outlet end of the slurry valve 16 is connected to the inlet of the slurry pump 17. The steam inlet at the lower part of one end of the steam-water heat exchange tank 41 is connected to the steam outlet at the upper part of the side wall of the evaporation tank 24 through the steam pipe 31, and the steam outlet at the upper part of the other end of the steam-water heat exchange tank 41 is connected to the inlet of the cyclone scrubber 18, and the outlet of the cyclone scrubber 18 is connected to the induced draft fan 19. The water inlet of the clean water tank 20 is connected to the drain port at the bottom of the side wall of the steam-water heat exchange tank 41, and the water outlet of the clean water tank 20 is connected to the inlet of the clean water pump 21, and the outlet of the clean water pump 21 provides domestic hot water to users.

[0025] The slurry filtering device includes a buffer tank 22 and a filter press 23 . The outlet of the slurry pump 17 is connected to the inlet of the buffer tank 22 , and the outlet of the buffer tank 22 is connected to the filter press 23 .

[0026] The inner wall of the pouring nozzle 35 is provided with a high temperature resistant material, and the diameter of the pouring nozzle 35 is 20-100 mm. The belt conveyor 25 is 20-40 cm away from the top of the cold slag bin 26.

[0027] The heat exchange box 29 and the fixed column 4 are made of wear-resistant, high-temperature-resistant, high-strength metal materials. When the equipment is overhauled, the heat exchange box 29 can be hoisted and disassembled for maintenance.

[0028] The return pipe 38 is arranged at a distance of 10-20 cm from the top of the jacket 10 , and the outlet pipe 37 is arranged at a distance of 10-20 cm from the bottom of the jacket 10 .

[0029] The horizontal inclination angles of the upper inclined plate 39 and the lower inclined plate 40 are 30°-55°.

[0030] The total number of upper baffles 44 and lower baffles 34 is 4-6, which divide the inner cavity of the steam-water heat exchange tank 41 into 5-7 heat exchange chambers. 3-5 sedimentation tanks 15 are arranged at the bottom of the steam-water heat exchange tank 41.

[0031] The working process of the present invention is as follows: ① Load the high-temperature molten slag into the slag pot 2, lift the slag pot 2 to the top of the tundish 3 by the overhead crane 1, and pour the high-temperature molten slag into the tundish 3; ② Start the box heat exchange device, turn on the hot water pump 12, and the high-temperature slag flows into the slag funnel 32 through the pouring water inlet 35. The low-temperature water before heat exchange enters the heat exchange tube 28 through the low-temperature water pipe 5. The low-temperature water flows in the heat exchange tube 28. The heat of the high-temperature slag is transferred to the low-temperature water in the heat exchange tube 28 through the heat exchange box 29, so that the low-temperature water absorbs heat and becomes hot water. Under the action of the hot water pump 12, it finally flows out from the high-temperature water pipe 27; ③ Start the partition heat exchange device, turn on the water supply pump 8, fill the circulating water tank 6 with water, turn on the circulating pump 9, and the low-temperature water in the circulating water tank 6 enters the jacket 10 through the outlet pipe 37. The wall surface of the slag hopper 32 is the heat exchange surface. The low-temperature water enters the jacket 10 and exchanges heat with the high-temperature slag in the slag hopper 32 to become hot water. Under the action of the circulating pump 9, it flows back to the circulating water tank 6 through the return pipe 38, and the hot water is transported to the user through the drainage pump 7; ④ Start the phase change dust removal and heat exchange device, turn on the hot water pump 12, the atomizing nozzle 33, the delivery pump 11, the flow valve 30, and the vibrator 43. The hot water in the circulating water tank 6 flows into the upper inclined plate 39 through the flow valve 30, and exchanges heat with the high-temperature slag on the upper inclined plate 39. The hot water absorbs the heat of the slag and evaporates into steam. Under the action of the vibrator 43, the slag slowly flows downward into the lower inclined plate 40. The hot water continues to absorb the heat of the slag. The generated steam enters the steam-water heat exchange tank 41 through the steam pipe 31. The atomized water generated by the atomizing nozzle 33 contacts and exchanges heat with the steam. A part of the slag particles carried in the steam collides and condenses with the atomized water, and finally falls into the sedimentation tank 15. The other part of the slag particles enters the cyclone scrubber 18 together with the water vapor. The steam enters each heat exchange chamber of the steam-water heat exchange tank 41 in turn. After several times of return heat exchange, it finally enters the cyclone scrubber 18 to separate the solid particles in the steam. The high-temperature hot water in the sedimentation tank 15 enters the clean water tank 20 through the clean water pump 21 for user use; ⑤ Start the slurry filtering device, open the slurry valve 16, the slurry pump 17, the buffer tank 22, and the filter press 23, and the slag particles in the sedimentation tank 15 enter the buffer tank 22 through the slurry pump 17, and finally enter the filter press 23; ⑥ Start the belt conveyor 25. Under the action of the vibrator 43, the slag falls from the lower inclined plate 40 onto the belt conveyor 25. The belt conveyor 25 carries the slag to the cold slag bin 26, and finally falls into the cold slag bin 26 for regular transportation by car.

[0032] The user hot water pipe 42 at the water outlet of the hot water pump 12 is divided into two paths, one path provides hot water to the user, and the other path provides water source for the atomizing nozzle 33. The hot water output by the box heat exchange device is used as the water source of the phase change dust removal heat exchange device, which can avoid the problem of pipe freezing due to low temperature in winter, and there is no need to set up an antifreeze device.

[0033] The circulating pump 9 can be frequency-controlled to adjust the water residence time in the jacket 10 by controlling the flow rate of water in the jacket 10. The longer the residence time, the more complete the heat exchange and the higher the water temperature, which can meet the user's needs for water of different temperatures.

[0034] The filter press 23 is a plate and frame filter press or a centrifugal filter, and the slurry valve 16 is used to adjust the slurry flow rate.

[0035] The invention has a reasonable structure and reliable operation; the invention adopts a box heat exchange device, a partition heat exchange device and a phase change dust removal heat exchange device to perform three-stage heat exchange on the slag, which can fully recover the slag waste heat, avoid energy waste, and reduce environmental pollution. The slurry filtering device can recycle the slag particles brought out by the steam.

Claims

1. A high-temperature slag heat energy utilization device, characterized in that: The invention comprises a slag pot (2), a tundish (3), a circulating water tank (6), a circulating pump (9), a slag hopper (32), a jacket (10), a water outlet pipe (37) and a water return pipe (38), wherein the slag pot (2) is suspended on a crown block (1) and is located above the tundish (3), the slag hopper (32) is located below a pouring water port (35) at the bottom of the tundish (3), the jacket (10) is mounted on the outer wall of the slag hopper (32), the circulating water tank (6) is connected to a water source via a water supply pump (8) and provides hot water to users via a drainage pump (7), the two ends of the water outlet pipe (37) are respectively connected to the bottom of the circulating water tank (6) and the jacket (10), the circulating pump (9) is mounted on the water outlet pipe (37), one end of the water return pipe (38) is connected to the water outlet at the top of the jacket (10), and the other end is connected to the water return port of the circulating water tank (6).

2. A high-temperature slag heat energy utilization device according to claim 1, characterized in that: It also includes a box heat exchange device, the box heat exchange device including a heat exchange box (29), a heat exchange tube (28) and a hot water pump (12), the heat exchange box (29) being located inside the slag hopper (32) and connected to the roof of the plant through a fixed column (4), the heat exchange tube (28) being located in the heat exchange medium inside the heat exchange box (29), one end of the heat exchange tube (28) being connected to a water source through a low-temperature water pipe (5), and the other end being connected to a water inlet of the hot water pump (12) through a high-temperature water pipe (27), and the water outlet of the hot water pump (12) being connected to a user's hot water pipeline (42).

3. A high-temperature slag heat energy utilization device according to claim 2, characterized in that: The device also comprises a phase change dust removal and heat exchange device, the phase change dust removal and heat exchange device comprising a delivery pump (11), an evaporation tank (24), a steam-water heat exchange tank (41), a cyclone scrubber (18), an induced draft fan (19), an upper inclined plate (39), a clean water tank (20) and a clean water pump (21); a feed inlet at the top of the evaporation tank (24) is connected to a discharge outlet at the bottom of the slag hopper (32), and a discharge outlet is provided at the bottom; a water inlet end of the delivery pump (11) is connected to a circulating water tank (6) via a pipeline, and a water outlet end is connected to a water inlet at the upper end of a side wall of the evaporation tank (24); the upper inclined plate (39) is located inside the evaporation tank (24), and a high end of the upper inclined plate (39) is located below the water inlet at the upper end of the side wall of the evaporation tank (24) and is connected to the evaporation tank (24). The steam-water heat exchange tank (41) is fixedly connected to the inner wall of the tank (24); a sedimentation tank (15) is provided at the bottom of the steam-water heat exchange tank (41), and an atomizing nozzle (33) is provided at the top; the atomizing nozzle (33) is connected to the user's hot water pipeline (42); a steam inlet at the lower part of one end of the steam-water heat exchange tank (41) is connected to the steam outlet at the upper part of the side wall of the evaporation tank (24) through the steam pipeline (31); the steam outlet at the upper part of the other end of the steam-water heat exchange tank (41) is connected to the inlet of the cyclone scrubber (18); the outlet of the cyclone scrubber (18) is connected to the induced draft fan (19); the water inlet of the clean water tank (20) is connected to the drain outlet at the bottom of the side wall of the steam-water heat exchange tank (41), and the water outlet provides domestic hot water to the user through the clean water pump (21).

4. A high-temperature slag heat energy utilization device according to claim 3, characterized in that: The steam-water heat exchange tank (41) is provided with a plurality of upper baffles (44) and lower baffles (34) arranged at equal intervals along its length direction; the upper end of the upper baffle (44) is connected to the top plate of the steam-water heat exchange tank (41); the lower end of the lower baffle (34) is connected to the bottom plate of the steam-water heat exchange tank (41); the upper baffles (44) and the lower baffles (34) divide the inner cavity of the steam-water heat exchange tank (41) into a plurality of heat exchange chambers; the tops or bottoms of any two adjacent heat exchange chambers are connected.

5. A high-temperature slag heat energy utilization device according to claim 4, characterized in that: A misting nozzle (33) is installed on the top of each heat exchange chamber. Each misting nozzle (33) is connected to a water inlet main pipe (13) via a water inlet branch pipe (14). The water inlet main pipe (13) is connected to a user hot water pipeline (42).

6. A high-temperature slag heat energy utilization device according to claim 5, characterized in that: It also includes a slurry valve (16) and a slurry pump (17). A plurality of sedimentation tanks (15) corresponding to the heat exchange chambers are arranged at the bottom of the steam-water heat exchange tank (41). The bottom of the sedimentation tank (15) is connected to the inlet of the slurry pump (17) via the slurry valve (16).

7. A high-temperature slag heat energy utilization device according to claim 8, characterized in that: A lower inclined plate (40) is provided below the upper inclined plate (39), and the upper ends of the upper inclined plate (39) and the lower inclined plate (40) are respectively connected to the inner walls on both sides of the evaporation tank (24).

8. A high-temperature slag heat energy utilization device according to claim 7, characterized in that: Vibrators (43) are fixed on the bottom surfaces of the upper inclined plate (39) and the lower inclined plate (40).

9. A high-temperature slag heat energy utilization device according to claim 8, characterized in that: It also comprises a belt conveyor (25) and a cold slag bin (26), wherein the belt conveyor (25) is located below the discharge port at the bottom of the evaporation tank (24), and the discharge end of the belt conveyor (25) is opposite to the feed port of the cold slag bin (26).

10. A high-temperature slag heat energy utilization device according to claim 9, characterized in that: It also includes a slurry filtering device, which includes a buffer tank (22) and a filter press (23), wherein the inlet of the buffer tank (22) is connected to the outlet of the slurry pump (17), and the outlet of the buffer tank (22) is connected to the filter press (23).

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