High-temperature metallurgical material cooling and sensible heat recovery device

Abstract

The invention relates to a high-temperature metallurgical material cooling and sensible heat recovery device, and relates to the technical field of high-temperature material cooling and waste heat recycling, the high-temperature metallurgical material cooling and sensible heat recovery device comprises a first-stage sensible heat recovery system, a second-stage sensible heat recovery system, a third-stage sensible heat recovery system and a fourth-stage sensible heat recovery system, the second-stage sensible heat recovery system comprises a plurality of water-cooled roller coolers; and the slag cooling channels of all the water-cooled roller coolers are connected in series, and the slag inlet of the water-cooled roller cooler at the foremost end is connected with the bottom of the hopper. The wear-resistant and fire-resistant pouring layer can prolong the service life of the first-stage sensible heat recovery system, and the possibility that materials penetrate through the hopper and enter the air cooling interlayer is reduced. Cooling media in the first-stage sensible heat recovery system and the second-stage sensible heat recovery system are different, and therefore normal work of the second-stage sensible heat recovery system cannot be affected by failure of a cooling medium circulation system of the first-stage sensible heat recovery system. Hot air output by the first-stage sensible heat recovery system and saturated steam and hot water output by the second-stage sensible heat recovery system can be used as heating media of other procedures.

Description

Technical Field

[0001] The present invention relates to the technical field of high-temperature material cooling and waste heat recovery and utilization, and particularly to a high-temperature metallurgical material cooling and sensible heat recovery device. Background Art

[0002] There are a large number of high-temperature slag in non-ferrous metallurgy, iron and steel, building materials and other industries, which need to be cooled for subsequent storage, transportation and reuse.

[0003] Chinese Patent CN220707866U discloses a high-temperature slag cooling and heat energy recovery and utilization device, including a chute and a water-cooled cylinder. One end of the water-cooled cylinder is provided with a first feed pipe, and the other end is provided with a first discharge pipe. A number of cooling water channels are arranged in the water-cooled cylinder. The chute is hermetically connected to the first feed pipe. It also includes an air-cooled cylinder. One end of the air-cooled cylinder is provided with a second feed pipe and an air outlet, and the other end is provided with a second discharge pipe and an air inlet. The second feed pipe is connected to the first discharge pipe. A belt conveyor system is arranged below the second discharge pipe. Rotary components are arranged on both the water-cooled cylinder and the air-cooled cylinder. This device adopts a heat exchange method combining a water-cooled cylinder and an air-cooled cylinder, and has a high heat exchange efficiency. The cooled cooling water and hot air can be recycled, and the heat recovery utilization rate of high-temperature slag is high.

[0004] The chute in the above device can store a certain amount of materials, which helps to ensure the continuous feeding of the water-cooled cylinder. The chute is eroded by the materials for a long time and has a fast wear rate. In the above device, a water-cooled sandwich is arranged outside the chute. Once the chute is worn through, the materials entering the water-cooled sandwich are easily carried by water into the water circulation, resulting in the blockage of the water circulation channel. Summary of the Invention

[0005] In view of the deficiencies in the related art, the present invention provides a high-temperature metallurgical material cooling and sensible heat recovery device, which improves the service life of the primary sensible heat recovery system from a structural perspective, and at the same time uses different cooling media in the primary sensible heat recovery system and the secondary sensible heat recovery system to solve the technical problems that the chute in the prior art is easily damaged and the water-cooling circulation system fails easily after the chute is damaged.

[0006] The present invention provides a high-temperature metallurgical material cooling and sensible heat recovery device, including: A primary sensible heat recovery system, including a hopper, a wear-resistant refractory casting layer and an air-cooled sandwich arranged in sequence from the inside to the outside. The air-cooled sandwich has an air inlet and an air outlet.

[0007] A secondary sensible heat recovery system, including a plurality of water-cooled drum coolers. The cold slag channels of all the water-cooled drum coolers are connected in series, and the slag inlet of the frontmost water-cooled drum cooler is connected to the bottom of the hopper.

[0008] In some of these embodiments, the device further comprises: A steam generation container having a liquid replenishment port and a steam outlet at the top, and a liquid inlet and a liquid outlet at the bottom.

[0009] All water-cooled drum coolers are divided into two groups according to the series direction, with at least one water-cooled drum cooler in each group. The group closer to the hopper is the steam group, and the other group is the hot water group. All the water outlets of the steam group are communicated with the liquid inlet, and all the water inlets of the steam group are communicated with the liquid outlet; the pressure in the steam generation container is less than the liquid pressure in the steam group.

[0010] In some of these embodiments, the steam generation container is provided with a liquid level gauge.

[0011] In some of these embodiments, the device further comprises: a booster pump connected between all the water inlets of the steam group and the liquid outlet of the steam generation container.

[0012] In some of these embodiments, the water flowing in the hot water group is all soft water.

[0013] In some of these embodiments, the primary sensible heat recovery system further comprises: a grid plate fixed at the top opening of the hopper.

[0014] In some of these embodiments, the air inlet is at the bottom of the air-cooled interlayer, and the air outlet is at the top of the air-cooled interlayer.

[0015] In some of these embodiments, the primary sensible heat recovery system further comprises: a plurality of anchor bolts. One end of each anchor bolt away from the hopper is located in the air-cooled interlayer and welded to the inner wall of the air-cooled interlayer, and the other end is inserted into the wear-resistant refractory casting layer.

[0016] In some of these embodiments, all the water-cooled drum coolers of the secondary sensible heat recovery system are arranged with decreasing heights along the material flow direction, and the height difference is used to provide power for the flow of the material in the cold slag channel.

[0017] In some of these embodiments, the device further comprises: a bucket elevator for lifting the material output from the last water-cooled drum cooler in the secondary sensible heat recovery system to a high place.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, the wear-resistant refractory casting layer can extend the service life of the primary sensible heat recovery system and reduce the possibility of the material wearing through the hopper and entering the air-cooled interlayer. The cooling media in the primary sensible heat recovery system and the secondary sensible heat recovery system are different, so the failure of the cooling medium circulation system of the primary sensible heat recovery system will not affect the normal operation of the secondary sensible heat recovery system. The hot air output by the primary sensible heat recovery system and the hot water output by the secondary sensible heat recovery system can be used as heating media for other processes.

[0019] 2. By introducing different types of cooling media, the present invention uses media such as cold air, high-temperature and high-pressure water, and low-temperature demineralized water for cooling at different temperature stages of high-temperature metallurgical materials, and simultaneously obtains sensible heat carriers of different grades such as hot air, saturated steam, and high-temperature demineralized water. The heat recovery efficiency can exceed 90%. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings: Figure 1 is a schematic structural diagram of an embodiment of the present invention.

[0021] Figure 2 is a schematic diagram of the primary sensible heat recovery system in the present invention.

[0022] Figure 3 is a schematic diagram of the welding joint of two adjacent sections in the outermost metal shell of the present invention.

[0023] Figure 4 is a schematic structural diagram of the side wall of the primary sensible heat recovery system showing anchor bolts in an embodiment of the present invention.

[0024] Figure 5 is a schematic diagram of the related structure of the steam generation container in an embodiment of the present invention.

[0025] Figure 6 is a schematic diagram of the related structure of the branch pipeline in an embodiment of the present invention.

[0026] Figure 7 is a schematic diagram of the related structure of the heat exchanger in an embodiment of the present invention.

[0027] In the figure: 1. Primary sensible heat recovery system; 101. Grid plate; 102. Hopper; 1021. Metal housing; 1022. Anchor bolt; 1023. Air-cooled interlayer; 1024. Wear-resistant refractory casting layer; 103. Air inlet; 104. Air outlet; 105. Metal support; 2. Steam group; 3. Hot water group; 401. Steam generation container; 402. High-temperature and high-pressure pipeline; 4021. Main stop valve; 4022. Control valve; 4023. Check valve; 4024. Branch stop valve; 4025. Pressure transmitter; 4026. Temperature detection module; 4027. Pressure gauge; 4028. First safety valve; 403. Liquid level gauge; 404. Drain pipe; 405. Drain container; 406. Waste water stop valve; 407. Make-up water pump; 408. Deaerator tank; 409. Cooling water tank; 410. Booster pump; 411. Steam outlet; 501. Heat exchanger; 502. First stop valve; 503. First circulation pump; 504. Second safety valve; 505. Second circulation pump; 506. Second stop valve; 507. Third stop valve; 6. Bucket elevator; 7. Silo. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "horizontal", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0030] The terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] As Figure 1-7 shown, in an embodiment of the high-temperature metallurgical material cooling and sensible heat recovery device of the present invention, the high-temperature metallurgical material cooling and sensible heat recovery device at least includes: A primary sensible heat recovery system 1, including a hopper 102, a wear-resistant refractory casting layer 1024, and an air-cooled sandwich layer 1023 arranged in sequence from the inside to the outside. The air-cooled sandwich layer 1023 has an air inlet 103 and an air outlet 104.

[0033] A secondary sensible heat recovery system, including a plurality of water-cooled drum coolers. The slag cooling channels of all the water-cooled drum coolers are connected in series, and the slag inlet of the frontmost water-cooled drum cooler is connected to the bottom of the hopper 102. The water-cooled drum cooler is a common drum cooler in the art with a cooling medium of water. It has a slag cooling channel for conveying materials. The axis of the slag cooling channel is inclined. The top end of the slag cooling channel has a slag inlet, and the bottom end has a slag outlet. The outside of the slag cooling channel is coated with a water-cooled sandwich layer, and the water-cooled sandwich layer has a water inlet and a water outlet.

[0034] In this device, the wear-resistant refractory casting layer 1024 can extend the service life of the primary sensible heat recovery system 1 and reduce the possibility of materials wearing through the hopper 102 and entering the air-cooled sandwich layer 1023. On this basis, the cooling media in the primary sensible heat recovery system 1 and the secondary sensible heat recovery system of this device are different. Therefore, the malfunction of the cooling medium circulation system of the primary sensible heat recovery system 1 will not affect the normal operation of the secondary sensible heat recovery system. The hot air output by the primary sensible heat recovery system 1 and the hot water output by the secondary sensible heat recovery system can be used as heating media for other processes.

[0035] Further, the primary sensible heat recovery system 1 is provided with three layers of metal shells 1021 in sequence from the inside to the outside. The innermost layer is the hopper 102. There is a filling space between the innermost layer and the middle layer, and the filling space is filled with wear-resistant refractory casting material, that is, the wear-resistant refractory casting layer 1024 that can coat the hopper 102. The wear-resistant refractory casting material includes, but is not limited to, corundum casting material, mullite casting material, high-aluminum casting material, and silicon carbide casting material. There is an air-cooled channel between the middle layer and the outermost layer, and the air-cooled channel has an air inlet 103 and an air outlet 104.

[0036] Furthermore, the height position of the primary sensible heat recovery system 1 is defined by a metal bracket 105, and the metal bracket 105 is welded to the outermost metal housing 1021 of the primary sensible heat recovery system 1 to reduce the damage to the airtightness of the air-cooling channel.

[0037] Furthermore, each layer of the metal housing 1021 of the primary sensible heat recovery system 1 is longitudinally divided into multiple segments, and the segments of the metal housing 1021 of the same layer are sealed and welded to reduce the transportation and construction difficulties of the primary sensible heat recovery system 1, as Figure 3 shown.

[0038] In some embodiments, the primary sensible heat recovery system 1 further includes: a grid plate 101, which is fixed at the top opening of the hopper 102. The grid plate 101 can preliminarily filter the materials entering the hopper 102 to prevent the hopper 102 from being blocked by oversize or coked large materials.

[0039] Furthermore, the grid plate 101 is made of a high-temperature and wear-resistant material to improve its service life.

[0040] In some embodiments, the air inlet 103 is at the bottom of the air-cooling sandwich layer 1023, and the air outlet 104 is at the top of the air-cooling sandwich layer 1023. Even if the materials wear through the hopper 102 and the wear-resistant refractory casting layer 1024 and enter the air-cooling sandwich layer 1023, due to the huge density difference and gravity between the materials and the air, the materials are not easily carried by the wind to the air outlet 104 at the top but will settle at the bottom of the air-cooling sandwich layer 1023, significantly reducing the possibility of blockage and failure of the air-using device connected to the primary sensible heat recovery system 1.

[0041] In some embodiments, the primary sensible heat recovery system 1 further includes: a plurality of anchor bolts 1022. One end of each anchor bolt 1022 away from the hopper 102 is located in the air-cooling sandwich layer 1023 and welded to the inner wall of the air-cooling sandwich layer 1023, and the other end is inserted into the wear-resistant refractory casting layer 1024 to improve the connection strength between the wear-resistant refractory casting material and the innermost metal housing 1021 and the middle metal housing 1021, reduce the tendency of the wear-resistant refractory casting material to settle downward and separate from the innermost metal housing 1021 and the middle metal housing 1021, and further extend the service life of the primary sensible heat recovery system 1.

[0042] Furthermore, a plurality of anchor bolts 1022 are evenly distributed around the side wall of the hopper 102.

[0043] Further, the anchor bolt 1022 is L-shaped. One end of the long side away from the short side passes through the intermediate metal shell 1021 and inserts into the wear-resistant and fire-resistant casting layer 1024. The short side is in line contact with the inner side wall of the outermost metal shell 1021 and welded to extend the weld length between the anchor bolt 1022 and the outermost metal shell 1021, thereby improving the connection strength between the anchor bolt 1022 and the outermost metal shell 1021.

[0044] Further, the short side of the anchor bolt 1022 is located below the long side to form a certain supporting effect on the long side, further reducing the tendency of the wear-resistant and fire-resistant casting material to deposit downward.

[0045] In some embodiments, the device further includes: A steam generation container 401, with a liquid replenishment port and a steam outlet 411 at the top, and a liquid inlet and an outlet at the bottom. A valve is provided at the steam outlet 411.

[0046] All water-cooled drum coolers are divided into two groups according to the series connection direction. Each group has at least one water-cooled drum cooler. The group close to the hopper 102 is the steam group 2, and the other group is the hot water group 3. Figure 1 The steam group 2 has one water-cooled drum cooler, and the hot water group 3 has one water-cooled drum cooler.

[0047] All the water outlets of the steam group 2 are communicated with the liquid inlet, and all the water inlets of the steam group 2 are communicated with the outlet. The pressure in the steam generation container 401 is less than the liquid pressure in the steam group 2. The hot water output by the water-cooled drum cooler of the steam group 2 enters the steam generation container 401. The steam generation container 401 provides a space for the high-pressure hot water to expand into saturated steam. The steam in the steam generation container 401 is conveyed from the valve at the steam outlet 411 to other heat-using equipment.

[0048] The hot water output by the hot water group 3 enters other heat-using equipment, and after the heat is released in other heat-using equipment, it returns to the hot water group 3.

[0049] By introducing different types of cooling media, the device uses media such as cold air, high-temperature and high-pressure water, and low-temperature demineralized water for cooling at different temperature stages of high-temperature metallurgical materials, and simultaneously obtains different grades of sensible heat carriers such as hot air, saturated steam, and high-temperature demineralized water. The heat recovery efficiency can exceed 90%.

[0050] Further, the temperature in the steam generation container 401 is 150 - 180 °C, and the pressure in the steam generation container 401 is 0.5 - 1 Mpa.

[0051] Further, the device further includes a heat exchanger 501. The heat exchanger 501 has two independent liquid flow channels inside. One of them is connected to the industrial water cycle, and the two ends of the other are respectively connected to the water outlet and the water inlet of the hot water group 3. The liquid flow directions in the two liquid flow channels in the heat exchanger 501 are opposite to improve the heat distribution uniformity of the heat exchanger 501. Figure 7 The heat exchanger 501 in Figure 7 is a plate heat exchanger 501.

[0052] Further, a first circulation pump 503 is provided between the heat exchanger 501 and the water inlet of the hot water group 3 to regulate the water flow velocity between the two.

[0053] Further, a first stop valve 502 is provided on each side of the first circulation pump 503.

[0054] Further, a second safety valve 504 is provided between the heat exchanger 501 and the water outlet of the hot water group 3.

[0055] Further, a second stop valve 506 is provided on the side of the second safety valve 504 away from the heat exchanger 501.

[0056] Further, a second circulation pump 505 is provided at the water inlet of the heat exchanger 501 connected to the industrial water cycle.

[0057] Further, a third stop valve 507 is provided at the drain outlet of the heat exchanger 501 connected to the industrial water cycle.

[0058] Further, the pressure inside the plate heat exchanger 501 is 0.5 - 1 Mpa.

[0059] In some embodiments, the steam generation container 401 has a liquid level gauge 403 to detect the liquid level height inside the steam generation container 401 and avoid the liquid level in the steam generation container 401 being too low.

[0060] Further, the steam generation container 401 further has a makeup water pump 407 and a control module. The makeup water pump 407 is connected to the makeup liquid port. Both the makeup water pump 407 and the liquid level gauge 403 are signal - connected to the control module. When the liquid level gauge 403 detects that the liquid level is lower than the preset minimum liquid level in the control module, the control module controls the makeup water pump 407 to supply water to the steam generation container 401; when the liquid level gauge 403 detects that the liquid level is higher than the preset maximum liquid level in the control module, the control module controls the makeup water pump 407 to shut down.

[0061] The steam generation container 401 further has a deaeration water tank 408, and the water inlet end of the makeup water pump 407 is connected to the deaeration water tank 408.

[0062] In some of these embodiments, the device further includes: a booster pump 410 connected between all the water inlets of the steam group 2 and the liquid outlet of the steam generation container 401. The booster pump 410 is used to pressurize the water delivered to the steam group 2 to increase the steam generation rate in the steam generation container 401.

[0063] Further, the booster pump 410 has an independent main medium channel and a cooling channel. The main medium channel is used to deliver the water in the steam generation container 401 to the steam group 2; the cooling channel forms a closed water cycle with an external cooling water tank 409 and an external water pump to continuously cool the booster pump 410, enabling the booster pump 410 to operate stably for a long time.

[0064] In some of these embodiments, a drain pipe 404 is provided at the bottom of the steam generation container 401, and a sewage stop valve 406 is provided on the drain pipe 404. After the steam generation container 401 is used for a long time, there will be some sediment impurities at the bottom. By opening the sewage stop valve 406, these sediment impurities can be discharged from the steam generation container 401.

[0065] Further, the sewage stop valve 406 is an electric stop valve.

[0066] Further, one end of the drain pipe 404 away from the steam generation container 401 is connected to a sewage container 405, and the sewage container 405 is used to store the sewage and impurities discharged from the drain pipe 404.

[0067] In some of these embodiments, a check valve 4023 is provided between the water outlet and the liquid inlet of the steam group 2 to prevent the liquid in the steam generation container 401 from flowing back to the steam group 2.

[0068] In some of these embodiments, the water outlet and the liquid inlet of the steam group 2 are connected by a high-temperature and high-pressure pipeline 402. A temperature detection module 4026 and a pressure detection module are provided on the high-temperature and high-pressure pipeline 402 to detect the temperature and pressure inside the high-temperature and high-pressure pipeline 402, facilitating the operator to adjust the temperature and pressure of the water cycle between the steam group 2 and the steam generation container 401 based on the detection results of the temperature detection module 4026 and the pressure detection module.

[0069] Further, the temperature detection module 4026 is an armored platinum resistance.

[0070] Further, a regulating valve 4022 is also provided on the high-temperature and high-pressure pipeline 402, and the opening degree of the regulating valve 4022 is adjustable.

[0071] Further, the regulating valve 4022 is an electric control regulating valve.

[0072] Further, the high-temperature and high-pressure pipeline 402 is also provided with two main stop valves 4021, and the regulating valve 4022 is located between the two main stop valves 4021 for the maintenance of the regulating valve 4022.

[0073] Further, a first safety valve 4028 is also provided on the high-temperature and high-pressure pipeline 402 to prevent the high-temperature and high-pressure pipeline 402 from being damaged due to overpressure.

[0074] Further, a branch pipeline is also provided on the high-temperature and high-pressure pipeline 402. Both ends of the branch pipeline are connected to the high-temperature and high-pressure pipeline 402, and the two ends of the branch pipeline are respectively located on the opposite sides of the two main stop valves 4021. A branch stop valve 4024 is provided on the branch pipeline.

[0075] The branch stop valve 4024 is normally closed, and the two main stop valves 4021 and the regulating valve 4022 are normally open. Closing the two main stop valves 4021 and opening the branch stop valve 4024 can perform the maintenance and repair of the regulating valve 4022 without affecting the normal operation of the steam group 2.

[0076] In some embodiments, the pressure detection module includes a pressure transmitter 4025 and a pressure gauge 4027.

[0077] In some embodiments, the water flowing in the hot water group 3 is all soft water to reduce the possibility of scale formation in the water circulation channel formed by the hot water group 3 and the heat dissipation device, so as to extend the maintenance interval of the water circulation channel, thereby increasing the working duration of the water circulation channel. Here, soft water refers to water containing little or no soluble calcium and magnesium compounds.

[0078] Further, the parameters of the soft water other than calcium ions and magnesium ions are as follows: hardness less than or equal to 2.5 μmol / l, conductivity less than or equal to 10 μs / cm, silica content less than or equal to 50 μg / l, pH value less than or equal to 2.5 μmol / l, total iron content less than 30 μg / l, and total copper content less than 5 μg / l. By controlling the above parameters, the heat conduction effect of the soft water can be further improved to further improve the sensible heat recovery rate of the hot water group 3.

[0079] In some embodiments, the heights of all the water-cooled drum coolers of the secondary sensible heat recovery system are arranged in decreasing order along the material flow direction, and the height difference is used to provide power for the flow of the material in the cold slag channel without the need to additionally set a mechanical power structure, which helps to reduce the working energy consumption of the device. The slag inlet and slag outlet of adjacent water-cooled drum coolers are connected by pipelines, and the pipelines are detachably connected to the water-cooled drum coolers.

[0080] In some of these embodiments, the device further includes: a bucket elevator 6 for lifting the materials output from the last water-cooled drum cooler in the secondary sensible heat recovery system to a high place, so as to convey the cooled materials to a transport vehicle or a storage device. The bucket elevator 6 is a common device in the art, and its structural principle will not be elaborated here.

[0081] As Figure 1 shown, in a preferred embodiment of the present invention, high-temperature metallurgical materials at about 950 - 1400 °C enter the primary sensible heat recovery system 1 from superior devices such as various rotary kilns, rotary hearth furnaces, and reduction furnaces through ladle cars, slag ladles or other transfer tools, and the sensible heat of the high-temperature metallurgical materials is recovered using cooling air. The hot air output from the primary sensible heat recovery system 1 can be used as a heating medium in other sections. During this process, the cooling air is heated from room temperature to 120 - 150 °C, and the high-temperature metallurgical materials at 950 - 1400 °C can be cooled to 900 - 1200 °C. The high-temperature metallurgical materials at 900 - 1200 °C enter the steam group 2, and are cooled to medium-temperature metallurgical materials at about 220 - 250 °C by high-pressure circulating water. The high-pressure circulating water is heated to about 200 °C - 230 °C, and saturated steam of different pressure grades meeting different production requirements is generated by the steam generation container 401. The steam can be used as a heating heat source, a drying heat source in other sections, or for power generation and external sales. The medium-temperature metallurgical materials enter the hot water group 3 for further cooling and conveying. After being cooled to low-temperature metallurgical materials at 90 - 100 °C from 220 - 250 °C, they enter the bucket elevator 6, and enter the silo 7 for storage and downstream discharging and conveying through the lifting action of the bucket elevator 6. The hot water group 3 uses demineralized water at 40 - 50 °C as a cooling medium, absorbs the sensible heat released by the medium-temperature metallurgical materials and the temperature rises to 80 - 90 °C, and enters the plate heat exchanger 501 for heat exchange with hot water supply or other industrial water for heating or pre-drying in the factory area. The temperature of the cooling water entering the plate heat exchanger 501 is controlled at 80 - 90 °C, and the temperature of the cooling water flowing out of the plate heat exchanger 501 is controlled at 40 - 50 °C. On the other side, the temperature of the industrial water entering the plate heat exchanger 501 is controlled at 30 - 40 °C, and the temperature of the industrial water flowing out of the plate heat exchanger 501 is controlled at 65 - 75 °C.

[0082] Through the description of multiple embodiments of the high-temperature metallurgical material cooling and sensible heat recovery device of the present invention, it can be seen that the embodiments of the high-temperature metallurgical material cooling and sensible heat recovery device of the present invention have at least one or more of the following advantages: 1. In the present invention, the wear-resistant and refractory casting layer 1024 can extend the service life of the primary sensible heat recovery system 1 and reduce the possibility of materials wearing through the hopper 102 and entering the air-cooled interlayer 1023. Since the cooling media in the primary sensible heat recovery system 1 and the secondary sensible heat recovery system are different, the malfunction of the cooling media circulation system of the primary sensible heat recovery system 1 will not affect the normal operation of the secondary sensible heat recovery system. The hot air output by the primary sensible heat recovery system 1 and the hot water output by the secondary sensible heat recovery system can be used as heating media for other processes.

[0083] 2. By introducing different types of cooling media, the present invention uses media such as cold air, high-temperature and high-pressure water, and low-temperature demineralized water for cooling at different temperature stages of high-temperature metallurgical materials, and simultaneously obtains sensible heat carriers of different grades such as hot air, saturated steam, and high-temperature demineralized water. The heat recovery efficiency can exceed 90%.

[0084] Finally, it should be noted that the embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same and similar parts among the embodiments, reference can be made to each other.

[0085] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features. Without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A high-temperature metallurgical material cooling and sensible heat recovery device, characterized in that, Including: A primary sensible heat recovery system, including a hopper, a wear-resistant refractory casting layer, and an air-cooled interlayer arranged in sequence from inside to outside; the air-cooled interlayer has an air inlet and an air outlet; A secondary sensible heat recovery system, including a plurality of water-cooled drum coolers; the slag-cooling channels of all the water-cooled drum coolers are connected in series, and the slag inlet of the frontmost water-cooled drum cooler is connected to the bottom of the hopper.

2. The high-temperature metallurgical material cooling and sensible heat recovery device according to claim 1, characterized in that, It further includes: A steam generation container, having a liquid replenishment port and a steam outlet at the top, and a liquid inlet and a liquid outlet at the bottom; All the water-cooled drum coolers are divided into two groups according to the series connection direction, with at least one water-cooled drum cooler in each group. The group close to the hopper is the steam group, and the other group is the hot water group; all the water outlets of the steam group are communicated with the liquid inlet, and all the water inlets of the steam group are communicated with the liquid outlet; the pressure in the steam generation container is less than the liquid pressure in the steam group.

3. The high-temperature metallurgical material cooling and sensible heat recovery device according to claim 2, characterized in that, The steam generation container is provided with a liquid level gauge.

4. The high-temperature metallurgical material cooling and sensible heat recovery device according to claim 2, characterized in that, It further includes: A booster pump, connected between all the water inlets of the steam group and the liquid outlet of the steam generation container.

5. The high-temperature metallurgical material cooling and sensible heat recovery device according to claim 2, wherein The water flowing in the hot water group is all soft water.

6. The high-temperature metallurgical material cooling and sensible heat recovery device according to claim 1 or 2, characterized in that The primary sensible heat recovery system further includes: a grid plate, fixed at the top opening of the hopper.

7. The high-temperature metallurgical material cooling and sensible heat recovery device according to claim 1 or 2, characterized in that, The air inlet is at the bottom of the air-cooled interlayer, and the air outlet is at the top of the air-cooled interlayer.

8. The high-temperature metallurgical material cooling and sensible heat recovery device according to claim 1 or 2, characterized in that, The primary sensible heat recovery system further includes: anchor bolts, a plurality of which are provided; one end of each anchor bolt away from the hopper is located in the air-cooled interlayer and welded to the inner wall of the air-cooled interlayer, and the other end is inserted into the wear-resistant refractory casting layer.

9. The high-temperature metallurgical material cooling and sensible heat recovery device according to claim 1 or 2, characterized in that, All the water-cooled drum coolers of the secondary sensible heat recovery system are arranged with gradually decreasing heights along the material flow direction, and the height difference is used to provide power for the flow of the material in the slag-cooling channel.

10. The high-temperature metallurgical material cooling and sensible heat recovery device according to claim 9, wherein, It further includes: It further includes a bucket elevator, used to lift the material output from the last water-cooled drum cooler in the secondary sensible heat recovery system to a high place.

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