High-temperature cinder ladle waste heat recovery system

Abstract

The utility model relates to the technical field of metallurgical copper slag treatment, and provides a high-temperature slag ladle waste heat recovery system which comprises a heat collection cover, a transportation mechanism and a plurality of heat exchange modules arranged at intervals in the transportation direction of the transportation mechanism, and the heat collection cover is provided with a transportation channel located between a slag discharging operation area and a water cooling operation area; the conveying mechanism is arranged on the conveying channel and used for conveying slag ladles in the slag discharging operation area to the water cooling operation area. The heat exchange module is arranged on the inner wall of the conveying channel and used for conducting radiation heat exchange with the cinder ladle. The slag ladles in the slag tapping operation area are transported to the water cooling operation area through the transportation mechanism, and the multiple heat exchange modules sequentially carry out radiation heat exchange with the slag ladles, so that full recovery of high-grade waste heat of the slag ladles is realized.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical copper slag treatment technology, and in particular to a high-temperature slag bag waste heat recovery system. Background Technology

[0002] With the development of the copper smelting industry and the growth in copper demand, the amount of copper slag, a byproduct of the smelting process, is increasing year by year. Statistics show that approximately 2.2 tons of copper slag are generated for every ton of copper produced. To ensure better crystal formation in the copper slag during cooling, thus facilitating copper ore recovery, the current copper slag treatment process mainly employs a combination of slow air cooling in slag bags and water quenching.

[0003] However, copper slag discharges from the smelting furnace at a temperature of approximately 1200℃ to 1300℃, representing a high-grade waste heat resource. During the cooling process, a significant amount of this high-grade waste heat is directly released into the air, resulting in substantial waste. Therefore, the recovery of high-grade waste heat from copper slag is a crucial issue that urgently needs to be addressed in the industry. Utility Model Content

[0004] This invention provides a high-temperature slag bag waste heat recovery system to solve the defect of waste heat waste in the cooling process of high-temperature copper slag in the prior art. During the transportation of the slag bag, multiple heat exchange modules sequentially conduct radiative heat exchange with the slag bag, thereby realizing the full recovery of high-grade waste heat from the slag bag.

[0005] This utility model provides a high-temperature slag bag waste heat recovery system, comprising:

[0006] A heat collection hood having a transport channel located between the slag discharge area and the water cooling area;

[0007] A transportation mechanism is installed in the transportation channel, and the transportation mechanism is used to transport the slag bags from the slag discharge area to the water cooling area.

[0008] The recycling mechanism includes a plurality of heat exchange modules arranged sequentially along a first direction. The heat exchange modules are disposed on the inner wall of the transport channel and are used for radiative heat exchange with the slag bag. The first direction is the transport direction of the transport mechanism.

[0009] According to the present invention, a high-temperature slag bag waste heat recovery system is provided, wherein the transport channel includes two side walls opposite each other along a second direction, and a top wall located between the two side walls, the height of the top wall gradually decreasing from the middle to both sides, and the second direction is perpendicular to the first direction;

[0010] The heat exchange module includes at least one hot water pipe unit, and the hot water pipe unit includes two hot water pipe components arranged opposite to each other along a second direction. Each hot water pipe component includes:

[0011] A water distribution element is disposed at the bottom of the side wall;

[0012] A water collection device is located in the middle of the top wall;

[0013] Multiple heat exchange tubes, the multiple hot water exchange tubes are arranged side by side along a first direction, and each hot water exchange tube is connected between the water distribution component and the water collection component;

[0014] In the case where the heat exchange module includes a plurality of hot water exchange pipe units arranged along a first direction, the plurality of hot water exchange pipe components located on the same side are connected in series along the first direction.

[0015] According to the high-temperature slag bag waste heat recovery system provided by this utility model, the hot water exchange pipe component further includes a connecting pipe, one end of which is connected to the water distribution component or the water collection component, and the other end of which corresponds to the position of the water collection component or the water distribution component.

[0016] According to the present invention, a high-temperature slag bag waste heat recovery system is provided, wherein the heat exchange module includes at least one hot water exchange pipe unit, and each hot water exchange pipe unit includes:

[0017] Water distribution components;

[0018] Water collection component, wherein the water distribution component and the water collection component are disposed on the side wall of the transport channel;

[0019] Multiple heat exchange tubes are connected between the water distribution component and the water collection component; when there are multiple heat exchange tube units, the water distribution component and the water collection component of two adjacent heat exchange tube units are connected.

[0020] According to the high-temperature slag bag waste heat recovery system provided by this utility model, multiple heat exchanger pipe units are arranged sequentially along a first direction, with the water distribution component farthest from the slag discharge operation area serving as the inlet of the heat exchange module; and the water collection component closest to the slag discharge operation area serving as the outlet of the heat exchange module.

[0021] According to the high-temperature slag bag waste heat recovery system provided by this utility model, the recovery mechanism further includes:

[0022] Multiple control valves, each of which is connected to one of the heat exchange modules;

[0023] A controller is electrically connected to a plurality of the control valves, the controller being used to adjust the opening degree of the plurality of the control valves.

[0024] According to the high-temperature slag bag waste heat recovery system provided by this utility model, the recovery mechanism further includes:

[0025] Multiple fluid drive components are connected one-to-one with the multiple heat exchange modules;

[0026] The controller is connected to multiple fluid drive components and is used to adjust the frequency of the fluid drive components so that the outlet water temperature of the heat exchange module reaches the target temperature for waste heat application.

[0027] The high-temperature slag bag waste heat recovery system provided by this utility model constructs a heat collection hood between the slag discharge area and the water cooling area. The heat collection hood has a transport channel located between the slag discharge area and the water cooling area, and a transport mechanism and multiple heat exchange modules are arranged in the transport channel. The transport mechanism is used to transport the slag bag from the slag discharge area to the water cooling area. The multiple heat exchange modules are arranged at intervals along the transport direction of the transport mechanism, and the multiple heat exchange modules sequentially perform radiative heat exchange with the slag bag, thereby realizing the full recovery of high-grade waste heat from the slag bag. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the principle structure of the high-temperature slag bag waste heat recovery system provided by this utility model.

[0030] Figure 2 This is a front view structural diagram of a high-temperature slag bag waste heat recovery system provided by this utility model.

[0031] Figure 3 This is a partial top view schematic diagram of a high-temperature slag bag waste heat recovery system provided by this utility model.

[0032] Figure 4 This is one of the partial side view structural schematic diagrams of a high-temperature slag bag waste heat recovery system provided by this utility model.

[0033] Figure 5 This is the second partial side view structural schematic diagram of a high-temperature slag bag waste heat recovery system provided by this utility model.

[0034] Figure 6 This is one of the structural diagrams of the heat exchange module and slag bag provided by this utility model.

[0035] Figure 7 This is a front view structural diagram of another high-temperature slag bag waste heat recovery system provided by this utility model.

[0036] Figure 8 This is a partial top view of another high-temperature slag bag waste heat recovery system provided by this utility model.

[0037] Figure 9 This is a partial side view of another high-temperature slag bag waste heat recovery system provided by this utility model.

[0038] Figure 10 This is the second schematic diagram of the structure of the heat exchange module and slag bag provided by this utility model.

[0039] Figure 11 This is one of the flowcharts of the high-temperature slag bag waste heat recovery method provided by this utility model.

[0040] Figure 12 This is the second flowchart of the high-temperature slag bag waste heat recovery method provided by this utility model.

[0041] Figure 13 This is a schematic diagram of the elbow provided by this utility model.

[0042] Figure Labels

[0043] 100. Heat collection hood; 110. Transport channel; 120. Insulation layer;

[0044] 200. Transport mechanism; 210. Transport track; 221. Transfer trolley; 2211. Transfer flatbed; 2212. Wheel; 2213. Fixing device;

[0045] 300. Heat exchange module; 31. Hot water pipe unit; 310. Hot water pipe component; 311. Water distribution component; 312. Water collection component; 313. Heat exchange pipe; 314. Connecting pipe; 320. Control valve; 330. Water collection-distribution connection pipe; 340. Water supply pipe; 350. Water supply-distribution connection pipe; 360. Return water pipe; 370. Water collection-return water connection pipe; 380. Pipe connection device;

[0046] 301, 1# water distributor; 302, 1# water collector; 303, 2# water distributor; 304, 2# water collector; 305, 3# water distributor; 306, 3# water collector; 307, 4# water distributor; 308, 4# water collector;

[0047] 400. Slag removal operation area;

[0048] 500. Water-cooled work area;

[0049] 600, trash bag. Detailed Implementation

[0050] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0051] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0053] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] The following is combined with Figures 1-13 This invention describes a high-temperature slag bag waste heat recovery system.

[0056] The first aspect of this utility model provides a high-temperature slag bag waste heat recovery system, such as... Figures 1 to 3 As shown, the waste heat recovery system includes a heat collection hood 100, a transport mechanism 200, and a recovery mechanism.

[0057] The heat collection hood 100 has a transport channel 110 located between the slag discharge area 400 and the water cooling area 500; a transport mechanism 200 is disposed in the transport channel 110 and is used to transport the slag bag 600 from the slag discharge area 400 to the water cooling area 500; the recovery mechanism includes a plurality of heat exchange modules 300 arranged at intervals along a first direction, the heat exchange modules 300 being disposed on the inner wall of the transport channel 110 and used for radiative heat exchange with the slag bag 600. The first direction is the transport direction of the transport mechanism 200.

[0058] It is understandable that the temperature of copper slag discharged from the smelting furnace is 1200℃~1300℃ (approximately 1280℃), which is a high-grade waste heat resource. Taking a specific heat capacity Cp of 1.1kJ / kg·℃ (kilojoules per kilogram of degree Celsius), and a copper slag quantity m of 1 t (ton), the latent heat r of the copper slag... m Taking 209 kJ / kg (kilojoules per kilogram), the temperature of copper slag is slowly cooled from 1280℃ (denoted as t1) to 800℃ (denoted as t2) by air cooling. The heat released in this process is Q = Cp×m×(t1-t2)+m×r m=737000kJ / ton of slag, equivalent to the calorific value of 25kg of standard coal (1kg of standard coal has a calorific value of 29307kJ). Each bag of copper slag (slag bag) weighs approximately 35t, and the recoverable heat is 25795000kJ, equivalent to the heat of 880kg of standard coal. To improve the waste heat utilization rate in the copper smelting process, current copper slag waste heat utilization technology recovers the waste heat by collecting the steam generated during the water quenching stage. This technology cannot recover the large amount of high-grade waste heat generated during the air slow cooling stage, resulting in a significant waste of waste heat, which is detrimental to energy conservation, emission reduction, and the sustainable development of copper plants in the future. Based on this, this utility model arranges a high-temperature slag bag waste heat recovery system between the slag discharge area 400 and the water cooling area 500 to recover the high-grade waste heat during the slow cooling stage of the slag bag.

[0059] Specifically, a heat collection hood 100 is constructed between the slag discharge area 400 and the water cooling area 500. The heat collection hood 100 has a transport channel 110. The entrance of the transport channel 110 is connected to the slag discharge area 400, and the exit of the transport channel 110 is connected to the water cooling area 500. A transport mechanism 200 and multiple heat exchange modules 300 are arranged in the transport channel 110. The transport mechanism 200 is used to transport the slag bag 600 from the slag discharge area 400 to the water cooling area 500. The multiple heat exchange modules 300 are arranged at intervals along a first direction, so that during the transport of the slag bag 600, the multiple heat exchange modules 300 sequentially conduct radiative heat exchange with the slag bag 600, which can fully recover and utilize the waste heat of the slag bag 600.

[0060] For example, the number of heat exchange modules 300 is N, where N is an integer greater than or equal to 2. The multiple heat exchange modules 300 are arranged sequentially along the first direction as the first heat exchange module, the second heat exchange module, ..., the Nth heat exchange module. The first heat exchange module is close to the slag discharge area 400, and the Nth heat exchange module is close to the water cooling area 500.

[0061] The slag bag 600 (high-temperature slag bag, temperature approximately 1200℃~1300℃) generated in the slag discharge area 400 is transferred to the transport mechanism 200. At this time, the slag bag 600 is positioned corresponding to the first heat exchange module. The slag bag 600 and the first heat exchange module undergo radiative heat exchange to heat the water in the first heat exchange module, and the first heat exchange module realizes the high-grade waste heat recovery of the slag bag 600. After the slag bag 600 completes the heat exchange with the first heat exchange module, the transport mechanism 200 transports the slag bag 600 sequentially to the corresponding positions of the second heat exchange module, ..., the Nth heat exchange module, to realize radiative heat exchange between the slag bag 600 and the second heat exchange module, ..., the Nth heat exchange module. In this way, the slag bag 600 is transported from the slag discharge area 400 to the water cooling area 500 by the transport mechanism 200. The same slag bag 600 undergoes radiative heat exchange with multiple heat exchange modules 300 in sequence to realize the effective recovery of the high-grade waste heat of the slag bag 600. It should be noted that the heated water from the outlet of the heat exchange module 300 can be directly used for industrial heating, domestic hot water supply, agricultural greenhouse heating, food cooking and sterilization, etc.

[0062] It should be noted that the slag removal area 400 generates slag bag #1 600. After slag bag #1 600 completes heat exchange with the first heat exchange module, it is transported to the corresponding position of the second heat exchange module. At the same time, slag bag #2 600 generated in the slag removal area 400 is transferred to the corresponding position of the first heat exchange module. At this time, slag bag #1 600 undergoes radiative heat exchange with the second heat exchange module, and slag bag #2 600 undergoes radiative heat exchange with the first heat exchange module, thus achieving radiative heat exchange between the two slag bags 600. In this way, when multiple slag bags 600 are arranged on the transport mechanism 200, multiple slag bags 600 can simultaneously undergo radiative heat exchange with multiple heat exchange modules 300.

[0063] The high-temperature slag bag waste heat recovery system provided in this embodiment of the utility model constructs a heat collection hood 100 between the slag discharge operation area 400 and the water cooling operation area 500. The heat collection hood 100 has a transport channel 110 located between the slag discharge operation area 400 and the water cooling operation area 500. A transport mechanism 200 and multiple heat exchange modules 300 are arranged in the transport channel 110. The transport mechanism 200 is used to transport the slag bag 600 from the slag discharge operation area 400 to the water cooling operation area 500. The multiple heat exchange modules 300 are arranged at intervals along a first direction. The multiple heat exchange modules 300 sequentially perform radiative heat exchange with the slag bag 600, thereby realizing the full recovery of high-grade waste heat from the slag bag 600.

[0064] In one embodiment of this utility model, such as Figure 3As shown, the recovery mechanism also includes multiple control valves 320, which are connected one-to-one with multiple heat exchange modules 300. The number of control valves 320 corresponds to the number of heat exchange modules 300. The controller is electrically connected to the multiple control valves 320 and is used to adjust the opening degree of the multiple control valves 320.

[0065] It should be noted that the control valve 320 can be installed at the inlet of the heat exchange module 300, or at the outlet of the heat exchange module 300. Alternatively, control valves 320 can be installed at both the inlet and outlet of the heat exchange module 300. Optionally, the control valve 320 is located on the outside of the heat collection hood 100.

[0066] For example, multiple control valves 320 are designated as first control valve, second control valve, ..., Nth control valve. The first control valve is connected to the inlet of the first heat exchange module, the second control valve is connected to the inlet of the second heat exchange module, and so on, with the Nth control valve connected to the inlet of the Nth heat exchange module. The controller is connected to each of the N control valves 320 and is used to adjust the opening, closing, and opening degree of the N control valves 320.

[0067] Taking a slag bag 600 (slag bag #1) generated in the slag discharge area 400 as an example, slag bag #1 corresponds to the position of the first heat exchange module. The controller controls the first control valve to open, and slag bag #1 performs radiative heat exchange with the first heat exchange module. After the heat exchange is completed, slag bag #1 is transported to the corresponding position of the second heat exchange module. At the same time, the controller controls the first control valve to close and the second control valve to open, and slag bag #1 performs radiative heat exchange with the second heat exchange module. Since the temperature of slag bag #1 decreases after heat exchange with the first heat exchange module, the opening of the second control valve can be adjusted by the controller to ensure that the outlet water temperature of the second heat exchange module 300 reaches the target temperature for waste heat application. It should be noted that when slag bag #1 is transported to the corresponding position of the second heat exchange module and a new slag bag #2 is transferred to the corresponding position of the first heat exchange module, the first control valve remains open.

[0068] Furthermore, the recovery mechanism also includes multiple fluid drive components (not shown in the figure), the number of which corresponds to the number of heat exchange modules 300, and the multiple fluid drive components are connected one-to-one to the inlet of the multiple heat exchange modules 300; the controller is connected to the multiple fluid drive components and is used to adjust the frequency of the fluid drive components so that the outlet water temperature of the heat exchange module 300 reaches the target temperature for waste heat application.

[0069] It is understandable that the adjustment principle of the fluid drive component is the same as that of the control valve 320. For example, when the No. 1 slag bag 600 is transported to the corresponding position of the second heat exchange module, the controller controls the second fluid drive component to open, and the No. 1 slag bag 600 performs radiative heat exchange with the second heat exchange module. The frequency of the second fluid drive component can be adjusted by the controller to ensure that the outlet water temperature of the second heat exchange module 300 reaches the target temperature for waste heat application.

[0070] In this embodiment, as Figure 3 As shown, control valves 320 are installed at both the inlet and outlet of the heat exchange module 300. The controller is used to adjust the opening degree of the control valve 320 and the frequency of the fluid drive component, which can dynamically control the cooling rate of the slag bag 600 so that the outlet water temperature of the heat exchange module 300 reaches the target temperature for waste heat application.

[0071] Specifically, the fluid drive component can be a water pump. The slag bag 600 containing copper slag is transferred to the transport mechanism 200 inside the heat collection hood 100. The slag bag 600 moves in the transport channel 110 along with the transport mechanism 200. At the same time, the water pump is turned on. By adjusting the water pump frequency and the control valves 320 of each heat exchange module 300, it is ensured that the water temperature at the outlet of each heat exchange module 300 can reach the required temperature.

[0072] In one embodiment of this utility model, such as Figures 3 to 5 As shown, the heat exchange module 300 includes a hot water pipe component 310, which includes a water distribution component 311, a water collection component 312, and multiple heat exchange pipes 313. The water distribution component 311 and the water collection component 312 are disposed on the inner wall of the transport channel 110, and the multiple heat exchange pipes 313 are connected between the water distribution component 311 and the water collection component 312. It should be noted that the number of heat exchange pipes 313 in the hot water pipe component 310 can be adjusted according to factors such as the actual size of the slag bag 600 and the size of the heat exchange pipes 313.

[0073] Understandably, the heat exchange module 300 is used for heating. The outlet end of the heating system is connected to a water supply pipe 340. The water supply pipe 340 and the water distribution component 311 are connected through a water supply-water distribution connection pipe 350. The inlet end of the heating system is connected to a return water pipe 360. The return water pipe 360 ​​and the water collection component 312 are connected through a water collection-return water connection pipe 370. The heating water enters the water distribution component 311 and is divided into multiple branches. The multiple branches enter multiple heat exchange tubes 313 respectively. During the flow of the heating water in the heat exchange tubes 313, the heating water undergoes radiative heat exchange with the slag bag 600 in the transport channel 110 to heat the heating water. The heating water heated by the multiple heat exchange tubes 313 is collected in the water collection component 312 and flows back to the heating system through the return water pipe 360, thereby realizing the heating of the heating water.

[0074] Optionally, there are multiple hot water exchange pipe components 310. In each heat exchange module 300, multiple hot water exchange pipe components 310 are connected in sequence. The water distribution component 311 and water collection component 312 of two adjacent hot water exchange pipe components 310 are arranged adjacently and connected. Then, the heating water passes through multiple hot water exchange pipe components 310 in sequence and undergoes multiple radiative heat exchanges with the slag bag 600 in the transport channel 110.

[0075] Furthermore, the heat exchange module 300 includes multiple hot water exchange pipe components 310, which are arranged sequentially along a first direction.

[0076] In this embodiment, as Figure 6 As shown, the heat exchange module 300 includes four hot water pipe components 310, which are respectively positioned along the first direction ( Figure 6 The hot water exchange pipe components 1, 2, 3 and 4 are arranged sequentially from bottom to top. The water distribution component 311 adopts a water distributor and the water collection component 312 adopts a water collector. The heat exchange module 300 and the two slag bags 600 conduct radiative heat exchange.

[0077] The #1 hot water exchanger pipe component includes a #1 distributor 301, a #1 collector 302, and multiple #1 water pipes; the #2 hot water exchanger pipe component includes a #2 distributor 303, a #2 collector 304, and multiple #2 water pipes; the #3 hot water exchanger pipe component includes a #3 distributor 305, a #3 collector 306, and multiple #3 water pipes; the #4 hot water exchanger pipe component includes a #4 distributor 307, a #4 collector 308, and multiple #4 water pipes; the #1 distributor 301 is connected to the #2 collector 304 via a collection-distribution connection pipe 330, the #2 distributor 303 is connected to the #3 collector 306 via a collection-distribution connection pipe 330, the #3 distributor 305 is connected to the #4 collector 308 via a collection-distribution connection pipe 330, and the #1 collector 302 and the #4 distributor 307 serve as the outlet and inlet of the heat exchange module 300, respectively.

[0078] Optionally, the water flow direction of the heat exchange module 300 is opposite to the first direction to achieve countercurrent heat exchange; then in each heat exchange module 300, the water distribution component 311 farthest from the slag discharge operation area 400 serves as the inlet of the heat exchange module 300, and the water collection component 312 closest to the slag discharge operation area 400 serves as the outlet of the heat exchange module 300.

[0079] In this embodiment, the #4 water distributor 307 serves as the inlet of the heat exchange module 300 and is connected to the outlet of the heating system; the #1 water collector 302 serves as the outlet of the heat exchange module 300 and is connected to the inlet of the heating system. The outlet of the heating system outputs heating water at 60℃~80℃. The heating water at 60℃~80℃ first enters the #4 water distributor 307, and after radiant heat exchange with the slag bag 600 through multiple #4 water pipes, it enters the #4 water collector 308. Then, it passes through the #3 water distributor 305, multiple #3 water pipes, the #3 water collector 306, the #2 water distributor 303, multiple #2 water pipes, the #2 water collector 304, the #1 water distributor 301, and multiple #1 water pipes, and converges at the #1 water collector 302. Thus, the heated heating water at 95℃~100℃ is output from the #1 water collector 302 to the inlet of the heating system.

[0080] The high-temperature slag ladle waste heat recovery system provided in this embodiment of the invention arranges multiple heat exchange modules 300 between the slag discharge operation area 400 and the water cooling operation area 500. Through the multiple heat exchange modules 300, the waste heat of the high-temperature slag ladle 600 during the slow cooling stage is recovered, which further improves the waste heat utilization efficiency of copper plants and is of great significance for achieving energy conservation and emission reduction as well as the sustainable development of the copper smelting industry.

[0081] Optionally, heat exchange tubes 313 are arranged at the top and / or side of transport channel 110.

[0082] In this embodiment, as Figure 2 As shown, the heat collection hood 100 has an inverted U-shaped cross-section. In each heat exchange pipe component 310, the water distribution component 311 and the water collection component 312 are arranged opposite each other on the lower part of the side wall of the transport channel 110. Multiple heat exchange pipes 313 are arranged side by side along the first direction, and the heat exchange pipes 313 are arranged on the top and side of the transport channel 110. It should be noted that the cross-sectional shape of the heat collection hood 100 can be adjusted according to the actual situation, as long as it can attach the heat exchange pipes 313 so that they can perform radiative heat exchange with the slag bag 600.

[0083] It should be noted that in other embodiments, the heat exchange module 300 can be arranged in other ways as needed to flexibly meet different requirements, so as to achieve specific functions without occupying additional space. For example, the heat exchange module 300 includes multiple hot water pipe components 310. At least one hot water pipe component 310 is arranged on the side wall of the transport channel 110 and at least one hot water pipe component 310 is arranged on the top wall of the transport channel 110. The water distribution component 311 and water collection component 312 of each hot water pipe component 310 are arranged at intervals along the transport direction of the transport channel 110. The heat exchange pipe 313 is arranged along the transport direction of the transport channel 110. The multiple hot water pipe components 310 are connected end to end in sequence, so that the heating water output by the heating system is heat-exchanged by the hot water pipe component 310 on one side wall of the transport channel 110, enters the hot water pipe component 310 on the top wall of the transport channel 110, and returns to the inlet end of the heating system after being heat-exchanged by the hot water pipe component 310 on the other side wall of the transport channel 110. It should be noted that when multiple hot water exchange pipe components 310 are also arranged on the side wall of the transport channel 110, the multiple hot water exchange pipe components 310 are connected end to end.

[0084] The heat exchange module 300 can have multiple hot water pipe components 310. These components can be connected in series or in parallel, allowing for dynamic adjustment of the series / parallel connection based on the heating water flow rate and heat demand, ensuring normal heat exchange while maintaining adequate cooling of the slag bag 600. When the heat exchange module 300 includes only one hot water pipe component 310, the water distribution component 311 serves as the inlet of the heat exchange module 300, connecting to the outlet of the heating system, while the water collection component 312 serves as the outlet of the heat exchange module 300, connecting to the inlet of the heating system.

[0085] In another embodiment of this utility model, such as Figures 7 to 10 As shown, the transport channel 110 includes two side walls opposite each other along a second direction, and a top wall located between the two side walls. The height of the top wall gradually decreases from the middle to both sides, and the second direction is perpendicular to the first direction. The heat exchange module 300 includes at least one hot water exchange pipe unit 31. The hot water exchange pipe unit 31 includes two hot water exchange pipe components arranged opposite each other along the second direction. The hot water exchange pipe component 310 includes a water distribution component 311, a water collection component 312, and a plurality of hot water exchange pipes 313. The water distribution component 311 is disposed at the bottom of the side wall; the water collection component 312 is disposed at the middle of the top wall; the plurality of hot water exchange pipes 313 are arranged side by side along the first direction, and each hot water exchange pipe 313 is connected between the water distribution component 311 and the water collection component 312.

[0086] Understandably, heating water enters the water distribution component 311, which then divides it into multiple branches. These branches enter multiple heat exchange pipes 313, and the heating water flows from bottom to top along the heat exchange pipes 313 to the water collection component 312. During its flow in the heat exchange pipes 313, the heating water undergoes radiant heat exchange with the slag bag 600 in the transport channel 110 to heat the water. The heated water from the multiple heat exchange pipes 313 is collected in the water collection component 312 and then flows back to the heating system through the return pipe, thus achieving the heating of the heating water.

[0087] Understandably, the height of the top wall gradually increases from the end connected to the side wall towards the middle. One end of the hot water exchange pipe 313 is arranged vertically on the side wall, and the other end of the hot water exchange pipe 313 is arranged slopingly from top to bottom on one side of the top wall, so that the heating water flows from bottom to top in the hot water exchange pipe 313 for heat exchange.

[0088] It should be noted that the heating water exchanges heat from bottom to top in the hot water exchange pipe 313, which can effectively prevent uneven flow in multiple hot water exchange pipes 313. That is, it achieves heat balance self-regulation through natural convection. If the flow in a certain hot water exchange pipe 313 is small, it will heat up quickly, thus increasing the temperature difference between the top and bottom, thereby strengthening the driving force and increasing the flow.

[0089] It should be noted that the hot water exchange pipe unit 31 includes two hot water exchange pipe components arranged opposite to each other along the second direction. One hot water exchange pipe component can correspond to half of the slag bag 600, so as to improve the convenience of installing the heat exchange module 300.

[0090] Optionally, the hot water exchange pipe unit 31 also includes a pipe connection device 380 for connecting two oppositely arranged hot water exchange pipe components.

[0091] For example, in each hot water exchange pipe unit 31, the water collection parts 312 of the two hot water exchange pipe components are arranged in the middle of the top wall. The water collection parts 312 of the two hot water exchange pipe components are connected detachably through the pipe connection device 380, so as to facilitate installation and disassembly.

[0092] Optionally, the heat exchange module 300 includes two hot water exchange pipe components 310 arranged opposite each other along the second direction. The two hot water exchange pipe components 310 have the same structure and are arranged symmetrically. The hot water exchange pipe component 310 also includes a connecting pipe 314. One end of the connecting pipe 314 is connected to the water distribution component 311, and the other end of the connecting pipe 314 corresponds to the position of the water collection component 312. Of course, one end of the connecting pipe 314 is also connected to the water collection component, and the other end of the connecting pipe 314 corresponds to the position of the water distribution component 311.

[0093] It is understandable that the water distribution component 311 is located at the bottom of the side wall and the water collection component 312 is located in the middle of the top wall. The water collection component 312 is located above the water distribution component 311 and is connected to the lower water distribution component 311 through one end of the connecting pipe 314. The other end of the connecting pipe 314 extends to the middle of the top wall and corresponds to the water collection component 312. Thus, when there are multiple hot water exchange pipe units 31, it is convenient to connect two adjacent hot water exchange pipe components 310 on the same side. That is, the two ends of the connecting pipe 314 are respectively connected between the water collection component 312 and the water distribution component 311 of two adjacent hot water exchange pipe components 310 along the first direction.

[0094] It should be noted that each hot water exchange pipe component 310 has a connecting pipe 314, which facilitates the adjustment of the number of hot water exchange pipe components 310 in the hot water exchange pipe unit 31, so that the outlet temperature of the heat exchange module 300 reaches the target temperature for waste heat application and meets the temperature requirements.

[0095] It should be noted that when the heat exchange module may include multiple hot water pipe units 31 arranged along the first direction, the multiple hot water pipe components 310 located on the same side of the heat exchange module 300 are connected in series, and the hot water pipe components 310 between the two sides are connected in parallel. Thus, the series and parallel connection relationship can be dynamically adjusted according to the heating water flow rate and the heating water heat demand, so as to ensure normal heat exchange under the premise of normal cooling of the slag bag 600.

[0096] In one embodiment of this utility model, such as Figure 2 As shown, the outer wall of the heat collection hood 100 has an insulation layer 120. The insulation layer 120 is mainly used to reduce the heat loss from the inside of the heat collection hood 100 to the outside. By reducing heat loss, the waste heat recovery efficiency of the slag bag 600 inside the heat collection hood 100 can be improved, ensuring that more heat is effectively utilized and helping to improve the energy utilization efficiency of the entire system and reduce energy consumption.

[0097] For example, the insulation layer 120 has a thickness of 500mm.

[0098] In one embodiment of this utility model, such as Figures 1 to 3 As shown, the transport mechanism 200 includes a transport track 210, a transfer component, and a power system (not shown in the figure). The transport track 210 is laid on the bottom surface of the transport channel 110, the transfer component is set on the transport track 210, and the power system is connected to the transfer component. The power system is used to drive the transfer component to move along the transport track 210 so as to transport the slag bag 600 from the slag discharge operation area 400 to the water cooling operation area 500, and stay at the corresponding position of the heat exchange module 300 for a preset time so as to realize the radiative heat exchange between the heat exchange module 300 and the slag bag 600.

[0099] Understandably, the fluid drive unit drives the hot water flow in the heat exchange module 300, and the transfer component moves under the drive of the power system according to the rate generated by the slag bag 600, thereby realizing radiative heat exchange between the slag bag 600 and the heating water in the heat exchange module 300.

[0100] For example, the power system could be an electrically driven system, such as a railcar. It should be noted that the movement of the transport components can be powered by rails, batteries, or other power sources.

[0101] Optionally, the transfer assembly includes multiple transfer trolleys 221 that can be detachably connected end to end. The transfer trolleys 221 move according to the pattern of slag bag 600 generation. The transfer assembly moves as a whole once so that the slag bag 600 moves from the current heat exchange module 300 to the corresponding position of the next heat exchange module 300.

[0102] For example, transport track 210 can be arranged in a serpentine pattern, or in an L-shape or other arrangement as needed.

[0103] like Figure 2 and Figure 3 As shown, the transfer trolley 221 includes a transfer plate 2211, wheels 2212 and a fixing device 2213. The wheels 2212 are connected to the bottom of the transfer plate 2211 and are set on the transport track 210. The upper side of the transfer plate 2211 is used to place the slag bag 600. The fixing device 2213 is set on the upper surface of the transfer plate 2211 and is used to fix the position of the slag bag 600 on the transfer plate 2211.

[0104] Specifically, slag bags 600 are generated in the slag removal area 400 (slag removal workshop). The slag bags 600 containing copper slag are transferred to the entrance of the transport channel 110 by a slag bag car, and then transferred to the frontmost transport trolley 221 of the transport assembly. The power system drives the transport assembly to move from the side closer to the slag removal area 400 to the side closer to the water cooling area 500. As the slag bag 600 moves within the transport channel 110, the fluid drive is activated simultaneously. By adjusting the frequency of the fluid drive and the opening of the control valves 320 connected to each heat exchange module 300, it is ensured that the outlet temperature of each heat exchange module 300 after heat exchange with the slag bag 600 reaches the target temperature for waste heat application, and that the cooling rate of the slag bag 600 meets the process requirements. It should be noted that when a new slag bag 600 is generated, the slag bag 600 of the last transfer trolley 221 is transferred to the water-cooled operation area 500 (spray cooling area), and at the same time, the last transfer trolley 221 returns to the entrance of the transport channel 110 to prepare for transporting the next slag bag 600, thereby realizing the recovery of waste heat from the slag bag 600. It should be noted here that the last transfer trolley 221 is the transfer trolley 221 that is closest to the water-cooled operation area 500.

[0105] The high-temperature slag bag waste heat recovery system provided in this embodiment of the utility model has the characteristics of simple equipment and minimal impact on the original process. It can improve the waste heat recovery rate through multiple heat exchange modules 300, which helps copper plants save energy, reduce emissions and achieve sustainable development.

[0106] Based on the high-temperature slag bag waste heat recovery system provided in any of the above embodiments, the second aspect of this utility model proposes a method for high-temperature slag bag waste heat recovery, such as... Figure 11 As shown, the waste heat recovery method includes the following steps:

[0107] Step 10: Transfer the slag bag 600 from the slag removal area 400 to the transportation mechanism 200.

[0108] Step 20: The transport mechanism 200 transports the slag bag 600 to the water-cooled operation area 500 and stays at the corresponding position of each heat exchange module 300 for a preset time, and the heat exchange module 300 and the slag bag 600 perform radiative heat exchange.

[0109] Understandably, the slag bag 600 generated in the slag discharge area 400 is transferred to the inlet of the transport channel 110 of the heat collection hood 100 and then to the transport mechanism 200. The transport mechanism 200 transports the slag bag 600 from the inlet of the transport channel 110 to the water-cooling operation area 500, where it stays at each heat exchange module 300 for a preset time to allow the slag bag 600 to radiate heat with the heat exchange module 300. In this way, the slag bag 600 is transported from the slag discharge area 400 to the water-cooling operation area 500 by the transport mechanism 200, and the same slag bag 600 sequentially radiates heat with multiple heat exchange modules 300 to achieve effective recovery of the high-grade waste heat of the slag bag 600.

[0110] It should be noted that each heat exchange module 300 can perform radiative heat exchange with multiple slag bags 600. For example, ... Figure 3 As shown, a heat exchange module 300 and two slag bags 600 perform radiative heat exchange.

[0111] Optionally, the waste heat recovery method may also include the following:

[0112] By adjusting the number of heat exchange water pipe units 310 in the heat exchange module 300, the outlet temperature of the heat exchange module 300 can reach the target temperature for waste heat application, thereby meeting the temperature requirements.

[0113] Understandably, the heat exchange efficiency is controlled by adjusting the number of water exchange tube units 310 in the heat exchange module 300, thereby precisely regulating the outlet temperature of the heat exchange module 300. Specifically, when it is necessary to increase the outlet temperature of the heat exchange module 300, the number of water exchange tube units 310 can be appropriately increased; conversely, when it is necessary to decrease the outlet temperature, the number of water exchange tube units 310 can be decreased. Through this dynamic adjustment method, it can be ensured that the outlet temperature of the heat exchange module 300 remains stable within the target temperature range required for waste heat application, ultimately meeting the precise temperature requirements of downstream processes or equipment and ensuring the efficient and stable operation of the waste heat recovery system.

[0114] Optionally, the waste heat recovery method may also include the following:

[0115] The cooling rate of the slag bag 600 is controlled by adjusting the flow rate of the heat exchange module 300 and / or the number of heat exchange water pipe units 310 of the heat exchange module 300, so as to ensure the cooling process requirements of the slag bag 600.

[0116] Understandably, the cooling rate of the slag bag 600 can be precisely controlled by adjusting the heating water flow rate of the heat exchange module 300 and / or the number of hot water pipe units 310. Specifically, when it is necessary to accelerate the cooling of the slag bag 600, the heating water flow rate can be increased to improve heat exchange efficiency, or the number of hot water pipe units 310 can be increased to expand the heat exchange area; conversely, when it is necessary to slow down the cooling rate, the heating water flow rate can be reduced or the number of hot water pipe units 310 can be reduced. This dual-parameter control method can be flexibly adjusted according to process requirements, ensuring that the slag bag 600 always maintains the optimal temperature change curve during the cooling process. This avoids slag body cracking or structural defects caused by excessively rapid cooling, and also prevents production efficiency from being affected by excessively slow cooling, thereby fully meeting all the technical requirements of the slag bag 600 cooling process.

[0117] Furthermore, such as Figure 12 As shown, the waste heat recovery method also includes the following steps:

[0118] Step 30: Adjust at least one of the following: the opening degree of the control valve 320 at the inlet of the heat exchange module 300, the opening degree of the control valve 320 at the outlet of the heat exchange module 300, and the frequency of the fluid drive component at the inlet of the heat exchange module 300, so that the outlet water temperature of the heat exchange module 300 reaches the target temperature for waste heat application.

[0119] In this embodiment, control valves 320 are provided at both the inlet and outlet of the heat exchange module 300. A fluid drive is provided at the inlet of the heat exchange module 300. By adjusting the opening degree of the control valve 320 and the frequency of the fluid drive through the controller, the cooling rate of the slag bag 600 can be dynamically controlled so that the outlet water temperature of the heat exchange module 300 reaches the target temperature for waste heat application.

[0120] Specifically, the fluid drive component can be a water pump. The slag bag 600 containing copper slag is transferred to the transport mechanism 200 inside the heat collection hood 100. The slag bag 600 moves in the transport channel 110 along with the transport mechanism 200. At the same time, the water pump is turned on. By adjusting the water pump frequency and the control valves 320 of each heat exchange module 300, it is ensured that the water temperature at the outlet of each heat exchange module 300 can reach the required temperature.

[0121] In one specific embodiment of this utility model, a plurality of heat exchange modules 300 are arranged on the inner wall of the heat collection hood 100, namely, a first heat exchange module, a second heat exchange module, ..., an Nth heat exchange module arranged sequentially from front to back. The working process of the high-temperature slag bag waste heat recovery system specifically includes the following steps:

[0122] Step 1: Load the molten copper slag discharged from the slag removal operation area 400 (slag removal workshop) into slag bag 600, and then transfer slag bag 600 to the front transfer trolley 221 of the transfer assembly by the slag bag car.

[0123] Step 2: Turn on the water pump of the first heat exchange module at the front end to circulate the heating water. The heating water in the No. 1 slag bag 600 and the first heat exchange module recovers waste heat through radiant heat exchange. After a preset static time, the No. 1 slag bag 600 and the first heat exchange module complete the radiant heat exchange.

[0124] Step 3: The transfer component moves once to the outlet side of the transport channel 110, thereby moving the No. 1 slag bag 600 to the corresponding position of the second heat exchange module. The No. 1 slag bag and the second heat exchange module perform radiative heat exchange again. At the same time, the newly generated No. 2 slag bag 600 is transferred to the corresponding position of the first heat exchange module and performs radiative heat exchange with the first heat exchange module.

[0125] Step 4: Repeat step 3 until N slag bags 600 are set on the transfer component, and the N slag bags 600 correspond to the positions of N heat exchange modules; in this way, the slag bags 600 are transported from the slag discharge area 400 to the water cooling area 500 by the transport mechanism 200. The same slag bag 600 can sequentially perform radiative heat exchange with multiple heat exchange modules 300, and multiple slag bags 600 can simultaneously perform radiative heat exchange.

[0126] Step 5: When a new slag bag 600 is generated, the slag bag 600 of the last transfer trolley 221 is transferred to the water-cooled operation area 500 (spray cooling area), and at the same time the last transfer trolley 221 returns to the entrance of the transport channel 110 to prepare for transporting the next slag bag 600.

[0127] Step 6: The newly generated slag bag 600 is transferred to the frontmost transfer trolley 221, and the transfer trolley 221 enters the transport channel 110.

[0128] Step 7: Whenever a new slag bag 600 is generated, repeat steps 5 and 6. The slag bags 600 are replaced in the order of forward and backward to achieve continuous waste heat recovery of the slag bags 600.

[0129] It should be noted that the heat exchange module 300 can exchange heat radiatively with multiple slag bags 600, allowing the transport mechanism 200 to transport the multiple slag bags 600 as a whole synchronously. The transport mechanism 200 moves once each set of multiple slag bags 600 is generated. Furthermore, based on the radiative heat exchange between the slag bags 600 and the heating water, the opening degree of the control valve and the water pump frequency can be dynamically adjusted in real time to control the cooling rate of the copper slag, thereby ensuring the recovery rate of the process copper.

[0130] A third aspect of this utility model provides a design method for a high-temperature slag bag waste heat recovery system, which includes the following steps:

[0131] S1. Construct a heat collection hood 100, which has a transport channel 110 located between the slag discharge area 400 and the water cooling area 500.

[0132] S2. Determine the number, size, and corresponding flow rate of water pipes based on the dimensional parameters of the slag bag 600 and engineering experience.

[0133] S3. Determine the target heat exchange rate based on the inlet water temperature and the target temperature for waste heat application, and the corresponding water flow rate.

[0134] S4. Based on the target heat exchange capacity and the cooling power of the slag bag 600, determine the heat exchange capacity of the slag bag 600.

[0135] S5. Determine the residence time of slag bag 600 based on the generation rate of slag bag 600, as well as the total number of slag bags 600 arranged between slag discharge operation area 400 and water cooling operation area 500. Then, determine the total heating water flow rate based on the heat exchange rate of slag bag 600.

[0136] Understandably, a heat collection hood 100 is constructed based on the space between the slag removal area 400 and the water cooling area 500. A transport channel 110 is formed inside the heat collection hood 100, and the transport channel 110 can be arranged in a serpentine pattern. The dimensions of the water pipes are designed, including the pipe diameter and length. Based on the dimensions of the slag bag 600 and the water pipes, the number of water pipes corresponding to the slag bag 600 and their corresponding flow rates are determined. Based on the inlet water temperature and the target temperature for waste heat application, as well as the corresponding water flow rate, the number of slag bags 600 corresponding to the heat exchange module 300 is determined. Then, the residence time of the slag bag 600 is determined based on the generation rate of the slag bag 600. Based on the length of the transport channel 110 between the slag removal area 400 and the water cooling area 500, the total number of slag bags 600 arranged within the transport channel 110 is determined. Finally, based on the number of slag bags 600 corresponding to a single heat exchange module 300, the total flow rate of the heated heating water is determined.

[0137] It should be noted that the number of heat exchangers in the slag bag 600 refers to the number of slag bags 600 arranged sequentially along the transport direction of the transport channel 110 and grouped together to exchange heat with one heat exchange module 300. The number of heat exchangers in the slag bag 600 can be one or more.

[0138] For example, a heat exchange module 300 performs radiative heat exchange with two slag bags 600. The slag discharge area 400 generates one slag bag 600 every half hour, so the slag bag generation rate is 2 bags / h, that is, the residence time of the slag bag 600 is 1 hour, which means the radiative heat exchange time between the heat exchange module 300 and the two slag bags 600 is 1 hour. The moving step of the transport mechanism 200 is the distance between two slag bags. For example, the slag discharge area 400 and the water cooling area 500 have slag bag positions A, B, C and D arranged sequentially along the transport direction. After the slag bags at positions A and B have been in residence for 1 hour, the transport mechanism 200 transports the slag bags at positions A and B to positions C and D respectively. At the same time, newly generated slag bags in the slag discharge area 400 are placed at positions A and B.

[0139] It should be noted that in other embodiments, the slag removal operation area 400 generates one slag bag 600 every half hour, so the slag bag generation rate is one bag every half hour, and the residence time of slag bag 600 can also be 0.5 hours. The moving step size of the transport mechanism 200 is the distance of one slag bag. For example, after the slag bag at position A has been residenced for 0.5 hours, the transport mechanism 200 transports the slag bag at position A to position B, and at the same time, the newly generated slag bag in the slag removal operation area 400 is placed at position A.

[0140] In one embodiment of this utility model, when the hot water pipe assembly 300 includes a plurality of hot water exchange pipe components arranged sequentially along a first direction, such as... Figure 6As shown, two slag bags 600 form a group of slag bags, and each group of slag bags corresponds to one heat exchange module 300, thus enabling radiative heat exchange between the two slag bags 600 and one heat exchange module 300. It should be noted that one heat exchange module 300 can also exchange heat with one or more slag bags 600, depending on the actual situation, as long as the heat exchange effect of the heating water and the cooling effect of the slag bags 600 are guaranteed.

[0141] In this embodiment, the high-temperature slag bale waste heat recovery system is set between the slag discharge area 400 and the water cooling area 500. Taking a copper plant as an example, the copper plant's slag bale production rate is 2 bales / h, the air slow cooling time is 30h, and the total water flow rate is 2260t / h. The specific structure and parameters of each component in the system are as follows:

[0142] 1) Slag Bag

[0143] The slag bag is truncated cone-shaped, with a top diameter of 3.45m, a bottom diameter of 1.78m, a height of 2.91m, and a wall thickness of 0.15m.

[0144] 2) Transfer trolley

[0145] The width of the transfer trolley is 3.5m.

[0146] 3) Single water pipe

[0147] The outer diameter of a single water pipe is 60 mm and the inner diameter is 50 mm. A single hot water exchange pipe assembly consists of 15 water pipes, with a spacing of 45 mm between adjacent water pipes. The total width of a single hot water exchange pipe assembly is 1530 mm.

[0148] 4) Water distributor and water collector

[0149] The water distributor and water collector are the same size, with an inner diameter of 210mm, a wall thickness of 6mm, an outer diameter of 222mm, and a length of 1700mm. It should be noted that the number of water pipes corresponding to each water distributor and water collector can be adjusted based on factors such as the actual size of the slag bag.

[0150] 5) Elbow

[0151] Single water pipes are installed at the top and sides of the transport channel, with the top and side sections connected by elbows, such as... Figure 13 As shown, the centerline distance of the elbow is 76mm from A, the inner diameter of the elbow is 46mm (A - outer diameter of the single water pipe / 2), and the outer diameter of the elbow is 106mm (A + outer diameter of the single water pipe / 2). Among them, the outer diameter of the single water pipe D is 60mm.

[0152] 6) Slag Bag Arrangement

[0153] The distance between the outer walls of two adjacent slag bags is 0.5m, and the distance between the centers of two adjacent slag bags is 3.95m.

[0154] 7) Layout of water pipes, distributors and collectors

[0155] Water pipes are installed on the inner wall of the heat collection hood, and the distance between the water pipes and the outer wall of the heat collection hood is 200mm. Water distributors and water collectors are arranged in pairs and located at the bottom of opposite side walls of the heat collection hood. The distance between the top of the water distributor (and water collector) and the top wall of the heat collection hood is 3.3m, and the distance between the bottom of the water distributor (and water collector) and the ground is 0.72m.

[0156] The same slag bag corresponds to two hot water exchange pipe components, and the distance between the water distributor and the water collector of the two hot water exchange pipe components is 50mm.

[0157] 8) Water pipe flow rate

[0158] The slag bag generation rate is 2 bags / h, and the air slow cooling time is 30h. Therefore, there are a total of 60 slag bags with different cooling levels at the same time. The temperature is set to inlet water temperature of 60℃~80℃ and outlet water temperature of 95℃~100℃.

[0159] like Figure 6 As shown, two slag bags form a group. Heating water at 60℃~80℃ enters first through distributor #4, then undergoes radiant heat exchange with the slag bags via multiple #4 water pipes before entering collector #4. It then flows sequentially through distributor #3, multiple #3 water pipes, collector #3, distributor #2, multiple #2 water pipes, collector #2, distributor #1, and multiple #1 water pipes, converging at collector #1. Heated heating water at 95℃~100℃ is then output from collector #1 to the inlet of the heating system. The water flow rate of a single heat exchange module is 75.33 t / h, and the flow rate of each water pipe is 5.02 t / h, corresponding to a single pipe velocity of 0.71 m / s and a specific friction resistance of 69 Pa / m. Therefore, the water flow rate of a single heat exchange module is 75.33 t / h, and there are 60 / 2 = 30 groups, for a total heating water flow rate of 2260 t / h.

[0160] In another embodiment of this utility model, the hot water pipe assembly 300 includes a plurality of hot water exchange pipe units 31 arranged along a first direction. Each hot water exchange pipe unit 31 includes two hot water exchange pipe components 310 arranged opposite each other along a second direction. The plurality of hot water exchange pipe components located on the same side are connected in series along the first direction, such as... Figure 10 As shown, two slag bags 600 form a set of slag bags, and a set of slag bags corresponds to a heat exchange module 300, so that the two slag bags 600 and the heat exchange module 300 perform radiative heat exchange.

[0161] In this embodiment, the high-temperature slag bag waste heat recovery system is located between the slag discharge area 400 and the water cooling area 500. The slag bag production rate is 2 bags / h, the air slow cooling time is 30h, and the total water flow rate is 1800t / h. The specific structure and parameters of each component in the system are as follows:

[0162] 1) Slag Bag

[0163] The slag bag is truncated cone-shaped, with a top diameter of 3.45m, a bottom diameter of 1.78m, a height of 2.91m, and a wall thickness of 0.15m.

[0164] 2) Transfer trolley

[0165] The width of the transfer trolley is 3.5m.

[0166] 3) Single water pipe

[0167] The outer diameter of a single water pipe is 60 mm and the inner diameter is 50 mm. A single hot water exchange pipe assembly consists of 20 water pipes, with a spacing of 45 mm between adjacent water pipes. The total width of a single hot water exchange pipe assembly is 2055 mm.

[0168] 4) Connecting pipe

[0169] The outer diameter of the connecting pipe is 159mm and the inner diameter is 149mm.

[0170] 5) Water distributor and water collector

[0171] The water distributor and water collector have the same dimensions: an inner diameter of 210mm, a wall thickness of 6mm, an outer diameter of 222mm, and a length of 2400mm.

[0172] 6) Slag Bag Arrangement

[0173] The distance between the outer walls of two adjacent slag bags is 0.5m, and the distance between the centers of two adjacent slag bags is 3.95m.

[0174] 7) Layout of water pipes, distributors and collectors

[0175] The water pipe is installed on the inner wall of the heat collection hood, and the distance between the water pipe and the outer wall of the heat collection hood is 100mm. The distance between the top of the water distributor and the top wall of the heat collection hood is 3.3m.

[0176] 8) Water pipe flow rate

[0177] The slag bag generation rate is 2 bags / h, and the air slow cooling time is 30h. Therefore, there are a total of 60 slag bags with different cooling levels at the same time, and the design water flow rate is 1800t / h.

[0178] Because the temperature of the slag bags is relatively high, four slag bags can be grouped together, and 60 slag bags can be divided into 15 groups. The temperature is set to inlet water temperature of 60℃~80℃ and outlet water temperature of 95℃~100℃.

[0179] Each group of four slag bags can be responsible for the heat transfer of two hot water exchange pipe units (one on the left and one on the right). The water flow rate of the hot water exchange pipe unit is 60t / h, the pipe velocity is 0.96m / s, and the specific friction resistance is 81Pa / m. The flow rate of each hot water exchange pipe is 3t / h, corresponding to a flow velocity of 0.42m / s and a specific friction resistance of 63Pa / m. Each hot water exchange pipe unit is responsible for heating 60t / h of heating water, and each group of heat exchange modules is responsible for heating 120t / h of heating water. Therefore, the total heating water flow rate that 15 groups can handle is 1800t / h.

[0180] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-temperature slag bag waste heat recovery system, characterized in that, include: A heat collection hood having a transport channel located between the slag discharge area and the water cooling area; A transportation mechanism is installed in the transportation channel, and the transportation mechanism is used to transport the slag bags from the slag discharge area to the water cooling area. The recycling mechanism includes a plurality of heat exchange modules arranged sequentially along a first direction. The heat exchange modules are disposed on the inner wall of the transport channel and are used for radiative heat exchange with the slag bag. The first direction is the transport direction of the transport mechanism.

2. The high-temperature ladle residual heat recovery system according to claim 1, characterized by, The transport channel includes two side walls opposite each other along a second direction, and a top wall located between the two side walls. The height of the top wall gradually decreases from the middle to both sides, and the second direction is perpendicular to the first direction. The heat exchange module includes at least one hot water pipe unit, and the hot water pipe unit includes two hot water pipe components arranged opposite to each other along a second direction. Each hot water pipe component includes: A water distribution element is disposed at the bottom of the side wall; A water collection device is located in the middle of the top wall; Multiple heat exchange tubes, the multiple hot water exchange tubes are arranged side by side along a first direction, and each hot water exchange tube is connected between the water distribution component and the water collection component; In the case where the heat exchange module includes a plurality of hot water exchange pipe units arranged along a first direction, the plurality of hot water exchange pipe components located on the same side are connected in series along the first direction.

3. The high-temperature slag bag waste heat recovery system according to claim 2, characterized in that, The hot water exchange pipe component also includes a connecting pipe, one end of which is connected to the water distribution component or the water collection component, and the other end of which corresponds to the position of the water collection component or the water distribution component.

4. The high temperature ladle heat recovery system of claim 1, wherein The heat exchange module includes at least one hot water exchange pipe unit, and each hot water exchange pipe unit includes: Water distribution components; Water collection component, wherein the water distribution component and the water collection component are disposed on the side wall of the transport channel; Multiple heat exchange tubes are connected between the water distribution component and the water collection component; when there are multiple heat exchange tube units, the water distribution component and the water collection component of two adjacent heat exchange tube units are connected.

5. The high-temperature ladle heat recovery system according to any one of claims 2 to 4, characterized in that, Multiple heat exchanger pipe units are arranged sequentially along a first direction, with the water distribution component furthest from the slag discharge area serving as the inlet of the heat exchange module; and the water collection component closest to the slag discharge area serving as the outlet of the heat exchange module.

6. The high-temperature ladle residual heat recovery system according to any one of claims 1 to 4, characterized by, The recycling facility also includes: Multiple control valves, each of which is connected to one of the heat exchange modules; A controller is electrically connected to a plurality of the control valves, the controller being used to adjust the opening degree of the plurality of the control valves.

7. The high-temperature slag bag waste heat recovery system according to claim 6, characterized in that, The recycling facility also includes: Multiple fluid drive components are connected one-to-one with the multiple heat exchange modules; The controller is connected to multiple fluid drive components and is used to adjust the frequency of the fluid drive components so that the outlet water temperature of the heat exchange module reaches the target temperature for waste heat application.

Images