Waste heat recovery device for roasting furnace, control method and related equipment

Abstract

The invention provides a waste heat recovery device for a roasting furnace, a control method and related equipment, and the waste heat recovery device for the roasting furnace comprises a heat storage assembly which is provided with a containing space; the heat exchange assembly is provided with a medium channel and a flue gas channel; the first power assembly is used for driving the heat storage medium in the medium channel to flow in the direction from the medium input end to the medium output end; the second power assembly is used for driving gas in the flue gas channel to flow in the direction from the flue gas input end to the flue gas output end; the driving assembly is used for driving the heat storage assembly and the heat exchange assembly to move relative to the roasting furnace. According to the waste heat recovery device for the roasting furnace, continuous and stable waste heat recovery can be conducted on the roasting furnace, the heat loss in the roasting process is reduced, and the energy efficiency level of production of carbon anodes for aluminum can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of aluminum electrolysis, and in particular to a waste heat recovery device for a roasting furnace, a control method and related equipment. Background Art

[0002] In the field of aluminum electrolysis, roasting furnaces are one of the commonly used equipment for the production of aluminum carbon anodes. The roasting furnaces in related technologies are large in size, and there is often a large heat loss due to heat conduction during the roasting process. However, due to the large size of the roasting furnace and the poor uniformity and stability of the temperature distribution during the production process, it is not conducive to stable and continuous waste heat recovery, which limits the improvement of the energy efficiency level of aluminum carbon anode production. Summary of the invention

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In view of this, according to a first aspect of an embodiment of the present disclosure, a waste heat recovery device for a roasting furnace is proposed, comprising:

[0005] The heat storage component is formed with a receiving space, and the receiving space is used to receive the heat storage medium;

[0006] The heat exchange component has a medium channel and a smoke channel, the medium channel and the smoke channel are heat-conductingly connected, the medium input end and the medium output end of the medium channel are both connected to the accommodation space, and the smoke input end of the smoke channel is used to connect to the cooling furnace chamber of the roasting furnace;

[0007] A first power component is connected between the heat storage component and the heat exchange component, and is used to drive the heat storage medium in the medium channel to flow in the direction from the medium input end to the medium output end;

[0008] A second power component is provided in the heat exchange component and is used to drive the gas in the smoke channel to flow in a direction from the smoke input end to the smoke output end;

[0009] The driving assembly is used to drive the heat storage assembly and the heat exchange assembly to move relative to the roasting furnace.

[0010] In a feasible implementation, the heat storage component includes:

[0011] The receiving groove is formed with a discharge port and a receiving space, and the discharge port is communicated with the receiving space;

[0012] A supply channel, one end of which is connected to the heat storage medium supply device, and the other end of which is connected to the accommodating space;

[0013] The first valve is used to open or close the discharge port;

[0014] The second valve is used to open or close the supply channel;

[0015] A first roller portion connected to the receiving groove;

[0016] Wherein, the driving component is arranged on the heat exchange component.

[0017] In a feasible implementation, the driving component includes:

[0018] A guide rail portion, used to be arranged on one side of the roasting furnace;

[0019] A second roller portion is connected to the heat exchange assembly, and the second roller portion is movably disposed on the guide rail portion;

[0020] The driving motor is connected to the second roller portion and is used for driving the second roller portion to rotate.

[0021] In a feasible implementation manner, the waste heat recovery device for the roasting furnace further includes:

[0022] Temperature detection component, used to detect the temperature information of the medium channel and the smoke channel;

[0023] The flow detection component is used to detect the flow information of the medium channel and the smoke channel.

[0024] According to a second aspect of an embodiment of the present disclosure, a control method for a waste heat recovery device for a roasting furnace is provided, which is used for the waste heat recovery device for a roasting furnace as provided in any one of the first aspects above, and the control method includes:

[0025] In response to the waste heat recovery instruction, obtaining target cooling furnace chamber position information;

[0026] According to the target cooling furnace chamber position information, the driving component is controlled to operate so that the heat storage component and the heat exchange component move to the cooling furnace chamber corresponding to the target cooling furnace chamber position information;

[0027] When the smoke input end is connected to the cooling furnace chamber corresponding to the target cooling furnace chamber position information, the first power unit and the second power unit are controlled to operate.

[0028] In a feasible implementation manner, the control method of the waste heat recovery device for the roasting furnace further includes:

[0029] When the working state of the cooling furnace chamber currently connected to the flue gas input end is switched, a waste heat recovery instruction is generated.

[0030] In a feasible implementation manner, the control method of the waste heat recovery device for the roasting furnace further includes:

[0031] According to the preset heat exchange amount, the operating parameters of the first power unit and / or the second power unit are adjusted.

[0032] In a feasible implementation manner, when the heat storage component includes the above-mentioned second valve, the control method of the waste heat recovery device for the roasting furnace further includes:

[0033] Obtaining temperature information of the heat storage medium in the accommodation space;

[0034] When the temperature of the heat storage medium in the accommodation space is higher than the preset temperature, the second valve is controlled to open until the temperature of the heat storage medium in the accommodation space is lower than the preset temperature.

[0035] According to a third aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program. When the computer program is executed, the control method provided in any one of the second aspects is implemented.

[0036] According to a fourth aspect of an embodiment of the present disclosure, a control device is provided, comprising:

[0037] a memory storing a computer program;

[0038] a processor for executing a computer program;

[0039] When the processor executes the computer program, it implements the control method proposed in any one of the second aspects above.

[0040] Compared with the prior art, the present disclosure includes at least the following beneficial effects: the waste heat recovery device for a roasting furnace provided in the embodiment of the present disclosure includes a heat storage component, a heat exchange component, a first power component, a second power component and a driving component. Based on the above-mentioned configuration, the waste heat recovery device for a roasting furnace can utilize the flue gas input end of the heat exchange component to connect to the cooling furnace chamber of the roasting furnace in actual application. When the first power component is in operation, the flue gas in the cooling furnace chamber can be sucked into the flue gas channel of the heat exchange component, and when the second power component is in operation, the heat storage medium can be driven to circulate between the heat storage component and the heat exchange component, so as to facilitate heat exchange between the flue gas in the flue gas channel of the heat exchange component and the heat storage medium in the medium channel, thereby utilizing the heat storage medium to absorb the heat of the flue gas. The amount of waste heat can be recovered from the cooling furnace chamber to reduce the heat loss of the roasting furnace during the production process; during use, if the working state of the furnace chamber of the roasting furnace changes, that is, when the cooling furnace chamber currently connected to the flue gas input end is converted into a non-cooling furnace chamber, the waste heat recovery device for the roasting furnace can use the driving component to drive the heat storage component and the heat exchange component to move relative to the roasting furnace, so that the heat storage component and the heat exchange component are arranged corresponding to the furnace chamber in a cooling state after the working state is switched, and the waste heat of the furnace chamber in a cooling state after the aforementioned working state is switched is recovered, which is beneficial to improving the continuity and stability of the waste heat recovery process, and improving the waste heat recovery efficiency of the waste heat recovery device for the roasting furnace and the energy efficiency level of the carbon anode production for aluminum. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0042] Figure 1 A schematic structural diagram of a waste heat recovery device for a roasting furnace according to an embodiment of the present disclosure;

[0043] Figure 2 A schematic structural diagram of a drive assembly according to an embodiment of the present disclosure;

[0044] Figure 3 A schematic flow chart of a control method for a waste heat recovery device for a roasting furnace according to an embodiment of the present disclosure;

[0045] Figure 4 A schematic structural block diagram of a computer-readable storage medium according to an embodiment of the present disclosure;

[0046] Figure 5 A schematic structural block diagram of a control device according to an embodiment of the present disclosure.

[0047] in, Figure 1 and Figure 2 The corresponding relationship between the reference numerals and the component names is as follows:

[0048] 100' cooling furnace room; 101' fire viewing port;

[0049] 100 Waste heat recovery device for roasting furnace;

[0050] 110 heat storage component; 120 heat exchange component; 130 first power component; 140 second power component; 150 drive component; 160 temperature detection component; 170 flow detection component; 180 liquid level detection component; 190 pipeline component;

[0051] 111 accommodating groove; 112 supply channel; 113 first roller portion;

[0052] 151 guide rail portion; 152 second roller portion; 153 driving motor; 154 transmission portion;

[0053] 161 first thermometer; 162 second thermometer; 163 third thermometer; 164 fourth thermometer;

[0054] 171 a first flow meter; 172 a second flow meter;

[0055] 191 first smoke pipe; 192 second smoke pipe; 193 third smoke pipe; 194 smoke exhaust pipe; 195 first medium pipe; 196 second medium pipe; 197 third medium pipe;

[0056] 1201 medium input terminal; 1202 medium output terminal; 1203 smoke input terminal; 1204 smoke output terminal. DETAILED DESCRIPTION

[0057] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0058] It should be noted that the roasting furnace used in the field of aluminum electrolysis has a large furnace body and multiple furnace chambers. When the roasting furnace is in operation, the working states of the multiple furnace chambers are different and the working states of each furnace chamber change periodically. The working state of the furnace chamber can be roughly divided into a cooling state and a non-cooling state. The aforementioned non-cooling state may include but is not limited to a preheating state, a heating state, etc., wherein the temperature of the furnace chamber in the cooling state will gradually decrease to meet the temperature requirement of the furnace chamber in the next working state, and the cooling process is usually accompanied by a high heat loss, which is not conducive to improving the energy efficiency of the roasting furnace. However, due to the large size of the roasting furnace and the structure of multiple furnace chambers, if each furnace chamber is equipped with an independent waste heat recovery device or a waste heat recovery device that can cover all furnace chambers is set, the cost of waste heat recovery will be huge, which is not conducive to practical application; and because the working state of each furnace chamber will change during the production process, the heat of the furnace chamber is not continuous and stable, and it is difficult to perform continuous and stable waste heat recovery for a single furnace chamber.

[0059] To solve at least one of the technical problems existing in the prior art or related technology, such as Figure 1 and Figure 2As shown, according to the first aspect of the embodiment of the present disclosure, a waste heat recovery device 100 for a roasting furnace is proposed, comprising: a heat storage component 110, which is formed with a accommodating space, and the accommodating space is used to accommodate a heat storage medium; a heat exchange component 120, which has a medium channel and a flue gas channel, and the medium channel and the flue gas channel are heat-conductingly connected, the medium input end 1201 and the medium output end 1202 of the medium channel are both connected to the accommodating space, and the flue gas input end 1203 of the flue gas channel is used to be connected to the cooling furnace chamber 100' of the roasting furnace; a first power component 130, which is connected between the heat storage component 110 and the heat exchange component 120, and is used to drive the heat storage medium in the medium channel to flow in the direction from the medium input end 1201 to the medium output end 1202; a second power component 140, which is arranged on the heat exchange component 120, and is used to drive the gas in the flue gas channel to flow in the direction from the flue gas input end 1203 to the flue gas output end 1204; a driving component 150, which is used to drive the heat storage component 110 and the heat exchange component 120 to move relative to the roasting furnace.

[0060] The waste heat recovery device 100 for a roasting furnace provided in the embodiment of the present disclosure includes the aforementioned heat storage component 110 , a heat exchange component 120 , a first power component 130 , a second power component 140 and a drive component 150 . Based on the above-mentioned settings, the waste heat recovery device 100 for the roasting furnace can utilize the flue gas input end 1203 of the heat exchange component 120 to connect to the cooling furnace chamber 100' of the roasting furnace in actual application. It can be understood that the aforementioned cooling furnace chamber 100' is also the furnace chamber in a cooling state among the multiple furnace chambers; the second power component 140 can drive the heat storage medium to circulate between the heat storage component 110 and the heat exchange component 120 when it is running. When the flue gas input end 1203 is connected to the cooling furnace chamber 100', the first power component 130 can suck the flue gas in the cooling furnace chamber 100' into the flue gas channel of the heat exchange component 120 when it is running, so as to facilitate heat exchange between the flue gas in the flue gas channel of the heat exchange component 120 and the heat storage medium in the medium channel, thereby utilizing the heat storage medium to absorb the heat of the flue gas to realize waste heat recovery of the cooling furnace chamber 100' and reduce the heat loss of the roasting furnace during the production process; when used During the process, if the working state of the furnace chamber of the roasting furnace changes, that is, when the cooling furnace chamber 100' currently connected to the flue gas input end 1203 is converted into a non-cooling furnace chamber, the waste heat recovery device 100 for the roasting furnace can use the driving component 150 to drive the heat storage component 110 and the heat exchange component 120 to move relative to the roasting furnace, so that the heat storage component 110 and the heat exchange component 120 are arranged corresponding to the furnace chamber in a cooling state after the working state is switched. The furnace chamber in a cooling state after the aforementioned working state is switched is also the cooling furnace chamber 100' re-determined after the working state is switched, and waste heat is recovered from the furnace chamber in a cooling state after the aforementioned working state is switched, which can reduce the impact of the periodic changes in the working state of the furnace chamber on the continuity of waste heat recovery, and is conducive to improving the continuity and stability of the waste heat recovery process, and improving the waste heat recovery efficiency of the waste heat recovery device 100 for the roasting furnace and the energy efficiency level of the carbon anode production for aluminum.

[0061] It should be noted that during the operation of the roasting furnace, at least one of the multiple furnace chambers will be in a cooling state, that is, at least one of the multiple furnace chambers is a cooling furnace chamber 100'. It is understandable that if a fixed waste heat recovery device is configured for the furnace chamber of the roasting furnace, then when the furnace chamber is in a non-cooling state, such as a preheating state or a heating state, the aforementioned waste heat recovery device is difficult to recover waste heat and needs to wait for the furnace chamber to re-enter the cooling state, so that the continuity and stability of waste heat recovery are poor, and the utilization rate of the waste heat recovery device is low. Compared with the method of configuring a fixed waste heat recovery device for the furnace chamber of the roasting furnace, the waste heat recovery device 100 for the roasting furnace provided in the embodiment of the present disclosure is based on the above-mentioned setting. There is no need to wait for the furnace chamber to re-enter the cooling state. When the furnace chamber connected to the flue gas inlet 1203 is switched from the cooling state to the non-cooling state, the drive component 150 can be used to move the heat storage component 110 and the heat exchange component 120 to the cooling furnace chamber 100' re-determined after the working state is switched, and the waste heat of the furnace chamber in the cooling state after the above-mentioned working state switching is recovered. This can reduce the impact of the periodic changes in the working state of the furnace chamber on the continuity of waste heat recovery, which is beneficial to improving the continuity and stability of the waste heat recovery process and the utilization rate of the waste heat recovery device 100 for the roasting furnace.

[0062] It can be understood that, based on the aforementioned configuration, during the movement of the heat storage assembly 110 and the heat exchange assembly 120 , the first power assembly 130 and the second power assembly 140 can move synchronously with the heat storage assembly 110 and the heat exchange assembly 120 .

[0063] It can be understood that, based on the above-mentioned settings, the waste heat recovery device 100 for the roasting furnace can recover the waste heat of the cooling furnace chamber 100' of the roasting furnace during use, which is also beneficial to promote the cooling of the cooling furnace chamber 100' and reduce the energy consumption of the cooling device used by the roasting furnace to cool the furnace chamber, thereby further reducing the energy consumption and heat loss of the roasting furnace in actual applications.

[0064] It is understandable that the waste heat recovery device 100 for a roasting furnace may further include a pipeline assembly 190 , and the communication relationship between the aforementioned heat storage assembly 110 , the heat exchange assembly 120 , the first power assembly 130 , the second power assembly 140 and the cooling furnace chamber 100 ′ may be achieved through the pipeline assembly 190 .

[0065] For example, Figure 1As shown, the pipeline assembly 190 may include a first flue gas pipe 191, a second flue gas pipe 192, a third flue gas pipe 193, a first medium pipe 195, a second medium pipe 196 and a third medium pipe 197; wherein, one end of the first flue gas pipe 191 is used to connect to the cooling furnace chamber 100', and the other end is connected to the second flue gas pipe 192, the second flue gas pipe 192 is connected to the aforementioned flue gas input end 1203, the third flue gas pipe 193 is connected between the aforementioned flue gas output end 1204 and the input end of the second power assembly 140, the first medium pipe 195 is connected between the accommodating space and the input end of the first power assembly 130, the second medium pipe 196 is connected between the output end of the first power assembly 130 and the aforementioned medium input end 1201, and the third medium pipe 197 is connected between the aforementioned medium output end 1202 and the accommodating space. The pipeline assembly 190 may also include a smoke exhaust pipe 194, one end of which is connected to the output end of the second power assembly 140, and the other end is used to connect to the flue gas treatment equipment. The aforementioned flue gas pipes and / or each medium pipe may be, but not limited to, flexible pipes or telescopic pipes, so that the pipeline assembly 190 can move with the heat storage assembly 110 and the heat exchange assembly 120. The aforementioned flue gas pipes may be insulated pipes, which are helpful in reducing heat loss. For example, the aforementioned flue gas pipes may include a pipe body and thermal insulation cotton, and the thermal insulation cotton wraps the aforementioned pipe body. An elastic compensator may be provided at one end of the aforementioned first flue gas pipe 191 for connecting to the cooling furnace chamber 100', and the first flue gas pipe 191 may be connected to the cooling furnace chamber 100' through the elastic compensator.

[0066] It can be understood that, in actual applications, the aforementioned flue gas input terminal 1203 and the cooling furnace chamber 100' are in a detachable connection relationship, and the connection or separation operation between the flue gas input terminal 1203 and the cooling furnace chamber 100' can be performed manually by an operator, or can be automatically performed by a manipulator, a robot arm or the like, and no further restrictions are made here; accordingly, before operation, the drive component 150 can separate the flue gas input terminal 1203 from the cooling furnace chamber 100' to facilitate the movement of the heat exchange device. When the heat exchange device moves to the cooling furnace chamber 100', the flue gas output terminal 1204 can be connected to the corresponding cooling furnace chamber 100' to connect the two, so that the second power component 140 can draw the flue gas in the cooling furnace chamber 100'.

[0067] It is understandable that, in practical applications, the smoke input end 1203 can be used to connect to the fire viewing port 101' of the cooling furnace chamber 100', thereby avoiding the need to open an additional interface for the cooling furnace chamber 100', which is beneficial to reducing the modification of the roasting furnace. Figure 1As shown, one end of the first smoke pipe 191 can be provided for detachably connecting to the fire viewing port 101' of the cooling furnace chamber 100', and the other end can be connected to the aforementioned second smoke pipe 192. The diameter of the first smoke pipe 191 can be set in combination with the diameter of the fire viewing port 101'; when there are multiple fire viewing ports 101' of the cooling furnace chamber 100', the number of the first smoke pipe 191 is consistent with the number of the fire viewing ports 101' of the cooling furnace chamber 100' and corresponds one to one, and the diameters of the second smoke pipe 192 and the third smoke pipe 193 can both be larger than the diameter of the first smoke pipe 191, so as to ensure the smoke flow rate in the heat exchange component 120.

[0068] It is understandable that, in practical applications, the output flow of the first power assembly 130 and / or the second power assembly 140 can be adjusted so as to control the heat exchange amount of the waste heat recovery device 100 for the roasting furnace.

[0069] It is understandable that in practical applications, the conduction area between the smoke input end 1203 and the cooling furnace chamber 100' can be adjusted, thereby achieving the regulation of the smoke flow rate and heat exchange amount. Figure 1 As shown, in the case where there are multiple fire viewing ports 101' in the cooling furnace chamber 100', the number of first smoke pipes 191 is consistent with the number of fire viewing ports 101' in the cooling furnace chamber 100' and corresponds one to one, one end of the first smoke pipe 191 is used to be detachably connected to the fire viewing port 101' of the cooling furnace chamber 100', and the other end is connected to the aforementioned second smoke pipe 192, and the on and off states of each first smoke pipe 191 can be independently controlled.

[0070] It is understandable that the operation control of the aforementioned drive assembly 150 can be completed manually by an operator, or can be automatically controlled by a control device according to a control program, and no further limitations are made here.

[0071] It can be understood that the first power assembly 130 can be, but is not limited to, a liquid pump; and the second power assembly 140 can be, but is not limited to, an induced draft fan.

[0072] It is understandable that after heat exchange with the flue gas, the heat storage medium in the aforementioned accommodation space can have a relatively high temperature, so that the waste heat recovery device 100 for the roasting furnace can use the heat storage medium to store heat. In practical applications, the heat storage medium in the accommodation space can be provided to downstream heat-using equipment to facilitate heat utilization. The aforementioned heat storage medium can be, but is not limited to, water or refrigerant.

[0073] like Figure 1As shown, in some examples, the heat storage component 110 includes: a accommodating groove 111, which is formed with a discharge port and an accommodating space, and the discharge port is connected to the accommodating space; a supply channel 112, one end of the supply channel 112 is used to be connected to the heat storage medium supply device, and the other end is connected to the accommodating space; a first valve, used to open or close the discharge port; a second valve, used to open or close the supply channel 112; a first roller portion 113, connected to the accommodating groove 111; wherein the driving component 150 is arranged on the heat exchange component 120.

[0074] In this technical solution, the heat storage component 110 may include the aforementioned accommodating groove 111, the supply channel 112, the first valve, the second valve and the first roller portion 113. Based on the aforementioned settings, the heat storage component 110 can use the first valve to control the opening and closing state of the discharge port to discharge the heat storage medium in the accommodating space or accumulate the heat storage medium in the accommodating space, and can use the second valve to control the on-off state of the supply channel 112 to replenish the heat storage medium into the accommodating space and control the replenishment amount of the heat storage medium. The driving component 150 can be arranged in the heat exchange component 120, and the containing groove 111 can be provided with a first roller portion 113. The driving component 150 can drive the heat exchange component 120 to move during operation, and drive the heat storage component 110 to move through the heat exchange component 120. The heat storage component 110 can use the first roller portion 113 to reduce the friction resistance during the movement, improve the flexibility and movement stability of the heat storage component 110, and increase the distance between the heat storage component 110 and the driving component 150. Therefore, if the containing groove 111 leaks during use, the influence of the leaked heat storage medium on the driving component 150 can be reduced, thereby improving the operation stability and safety of the driving component 150.

[0075] It can be understood that, in actual applications, the waste heat recovery device 100 for the roasting furnace can be arranged on the ground in the area where the roasting furnace is located, and the aforementioned driving component 150 can drive the heat exchange component 120 to move on the aforementioned ground. Accordingly, the aforementioned first roller portion 113 is in rolling contact with the aforementioned ground, thereby reducing the flexibility of the heat storage component 110 when moving.

[0076] It can be understood that, in practical applications, the output end of the aforementioned first valve can be used to connect to a downstream heat-consuming device, so as to provide a heat storage medium with a relatively high temperature to the downstream heat-consuming device.

[0077] It is understandable that the aforementioned heat storage medium supply device is a device for outputting heat storage medium. Exemplarily, the aforementioned heat storage medium supply device can be used to output heat storage medium at room temperature, so that in the process of replenishing the heat storage medium in the accommodation space, the temperature of the heat storage medium in the accommodation space can also be adjusted accordingly.

[0078] Exemplarily, the first roller portion 113 may be a self-locking universal wheel.

[0079] like Figure 2 As shown, in some examples, the driving assembly 150 includes: a guide rail portion 151, which is used to be set on one side of the roasting furnace; a second roller portion 152, which is connected to the heat exchange assembly 120, and the second roller portion 152 is movably set on the guide rail portion 151; and a driving motor 153, which is connected to the second roller portion 152 and is used to drive the second roller portion 152 to rotate.

[0080] In this technical solution, the driving component 150 may include the aforementioned guide rail portion 151, the second roller portion 152 and the driving motor 153. Based on the aforementioned arrangement, the driving component 150 can drive the second roller portion 152 to move along the guide rail portion 151, and drive the heat exchange component 120 to move through the second roller portion 152. At the same time, the guide rail portion 151 can be used to constrain the moving range of the second roller portion 152, thereby improving the stability and reliability of the heat exchange component 120 and the heat storage component 110 during the movement process.

[0081] It can be understood that the guide rail portion 151 can be arranged along the arrangement direction of the multiple furnace chambers of the roasting furnace.

[0082] Exemplarily, the aforementioned driving motor 153 may be a lockable motor.

[0083] Exemplarily, the number of the aforementioned driving components 150 may be multiple, for example, two, and the two driving components 150 are arranged at intervals on the heat exchanger.

[0084] Exemplarily, the second roller portion 152 may include a wheel body and a wheel body bracket, the wheel body is arranged between the heat exchange component 120, and the wheel body is rotatably arranged on the wheel body bracket. The aforementioned driving component 150 may also include a transmission part 154, which is transmission-connected between the driving motor 153 and the wheel body. The aforementioned transmission part 154 may include but is not limited to a gear transmission mechanism.

[0085] like Figure 1 As shown, in some examples, the waste heat recovery device 100 for a roasting furnace further includes: a temperature detection component 160 for detecting temperature information of a medium channel and a smoke channel; and a flow detection component 170 for detecting flow information of a medium channel and a smoke channel.

[0086] In this technical solution, the waste heat recovery device 100 for the roasting furnace can use the temperature detection component 160 to obtain the temperature information of the medium channel and the flue gas channel, and use the flow detection component 170 to obtain the flow information of the medium channel and the flue gas channel, so as to facilitate understanding the temperature and flow of the heat storage medium flue gas in the heat exchange component 120, and provide reference data for the operation control of the first power component 130 and the second power component 140.

[0087] For example, Figure 1 As shown, the aforementioned temperature detection component 160 may include a first thermometer 161, a second thermometer 162, a third thermometer 163 and a fourth thermometer 164, wherein the first thermometer 161 is used to obtain temperature information at the medium input end 1201, for example, it can be set in the first medium pipe 195, the second thermometer 162 is used to obtain temperature information at the medium output end 1202, for example, it can be set in the third medium pipe 197, the third thermometer 163 is used to obtain temperature information at the flue gas input end 1203, for example, it can be set in the area of ​​the second flue gas pipe 192 close to the flue gas input end 1203, and the fourth thermometer 164 is used to obtain temperature information at the flue gas output end 1204, for example, it can be set in the area of ​​the third flue gas pipe 193 close to the flue gas output end 1204.

[0088] For example, Figure 1 As shown, the aforementioned flow detection component 170 may include a first flow meter 171 and a second flow meter 172, wherein the first flow meter 171 is used to detect the flow information of the medium channel, for example, it can be set on a straight pipe section of the second medium pipe 196 one meter away from the output end of the first power component 130, and the second flow meter 172 is used to detect the flow information of the flue gas channel, for example, it can be set on a straight pipe section of the third flue gas pipe 193 one meter away from the input end of the second power component 140.

[0089] like Figure 1 As shown, in some feasible examples, the waste heat recovery device 100 for a roasting furnace further includes: a liquid level detection component 180, which is used to detect the liquid level height information in the accommodation space. It can be understood that when the heat storage medium is a liquid medium, the amount of the liquid medium in the accommodation space can be determined based on the aforementioned liquid level height information, so as to provide reference data for discharging or replenishing the heat storage medium in the accommodation space.

[0090] like Figure 3 As shown, according to the second aspect of the embodiment of the present disclosure, a control method of a waste heat recovery device 100 for a roasting furnace is proposed, which is used for the waste heat recovery device 100 for a roasting furnace proposed in any one of the first aspects above, and the control method includes:

[0091] Step S301: in response to a waste heat recovery instruction, obtaining target cooling furnace chamber position information; it is understandable that the roasting furnace used in the field of aluminum electrolysis has a large furnace body and has multiple furnace chambers. When the roasting furnace is in operation, there are differences in the working states of the multiple furnace chambers and the working states of each furnace chamber change periodically. The working states of the furnace chambers can be roughly divided into a cooling state and a non-cooling state. The aforementioned non-cooling state may include but is not limited to a preheating state, a heating state, etc. Accordingly, a cooling furnace chamber refers to a furnace chamber in a cooling state. The aforementioned target cooling furnace chamber position information refers to the position information of a furnace chamber in a cooling state among the multiple furnace chambers of the roasting furnace when the waste heat recovery device 100 for the roasting furnace responds to a waste heat recovery instruction. The aforementioned waste heat recovery instruction may be issued by an operator or automatically generated based on the waste heat recovery operation process.

[0092] Step S302: According to the target cooling furnace chamber position information, the drive component 150 is controlled to operate so that the heat storage component 110 and the heat exchange component 120 are moved to the cooling furnace chamber corresponding to the target cooling furnace chamber position information; it can be understood that, when the aforementioned target cooling furnace chamber position information is obtained, the drive component 150 can be controlled to operate according to the target cooling furnace chamber position information, so that the drive component 150 drives the heat storage component 110 and the heat exchange component 120 to move to the cooling furnace chamber corresponding to the target cooling furnace chamber position information, thereby allowing the heat storage component 110 and the heat exchange component 120 to be arranged adjacent to the cooling furnace chamber, so that the aforementioned flue gas output end 1204 is connected to the cooling furnace chamber.

[0093] Step S303: When the flue gas input end 1203 is connected to the cooling furnace chamber corresponding to the target cooling furnace chamber position information, the first power unit and the second power unit are controlled to operate; it can be understood that when the flue gas input end 1203 is connected to the cooling furnace chamber corresponding to the target cooling furnace chamber position information, the first power unit and the second power unit can be controlled to operate to suck the flue gas in the cooling furnace chamber into the flue gas channel of the heat exchange component 120, and drive the heat storage medium to circulate between the heat storage component 110 and the heat exchange component 120, so as to facilitate heat exchange between the flue gas in the flue gas channel of the heat exchange component 120 and the heat storage medium in the medium channel, thereby utilizing the heat storage medium to absorb the heat of the flue gas, thereby realizing waste heat recovery of the cooling furnace chamber and reducing heat loss of the roasting furnace during the production process.

[0094] In summary, the control method of the waste heat recovery device 100 for a roasting furnace provided in the embodiment of the present disclosure can be used for the waste heat recovery device 100 for a roasting furnace as proposed in any one of the first aspects above. When there is a demand for waste heat recovery, the heat storage component 110 and the heat exchange component 120 can be controlled to move to the cooling furnace chamber corresponding to the target cooling furnace chamber position information, so that the heat storage component 110 and the heat exchange component 120 can be arranged adjacent to the cooling furnace chamber, so that the aforementioned flue gas output end 1204 is connected to the cooling furnace chamber, and the cooling furnace chamber is preheated and recovered, thereby reducing the impact of the periodic changes in the working state of the furnace chamber on the continuity of waste heat recovery, and is conducive to improving the continuity and stability of the waste heat recovery process, thereby improving the waste heat recovery efficiency of the waste heat recovery device 100 for the roasting furnace and the energy efficiency level of carbon anode production for aluminum.

[0095] In some examples, the control method of the roasting furnace waste heat recovery device 100 further includes:

[0096] When the working state of the cooling furnace chamber currently connected to the flue gas input end 1203 is switched, a waste heat recovery instruction is generated.

[0097] Specifically, when the working state of the cooling furnace chamber currently connected to the flue gas input terminal 1203 is switched, that is, when the cooling furnace chamber currently connected to the flue gas input terminal 1203 is converted into a non-cooling furnace chamber, the aforementioned waste heat recovery instruction can be generated to re-acquire the target cooling furnace chamber position information, and according to the re-acquired target cooling furnace chamber position information, control the operation of the drive component 150, so that the heat storage component 110 and the heat exchange component 120 are moved to the furnace chamber arrangement corresponding to the cooling state after the working state is switched, and the waste heat of the furnace chamber in the cooling state after the aforementioned working state is switched is recovered, which can further reduce the impact of the periodic changes in the working state of the furnace chamber on the continuity of waste heat recovery, and is conducive to improving the continuity and stability of the waste heat recovery process, and improving the waste heat recovery efficiency of the waste heat recovery device 100 for the roasting furnace and the energy efficiency level of the carbon anode production for aluminum.

[0098] In some feasible examples, the aforementioned step S301 includes:

[0099] In response to the waste heat recovery instruction, obtaining the working state information and position information of each furnace chamber of the roasting furnace;

[0100] Determine the spacing distance between the furnace chamber in the cooling state and the heat exchange component 120 according to the working state information and the position information;

[0101] The position information of the furnace chamber which is in a cooling state and has the smallest spacing distance from the heat exchange assembly 120 is determined as the target cooling furnace chamber position information.

[0102] Specifically, in the process of obtaining the target cooling furnace chamber position information, the position information of the cooling furnace chamber with the shortest spacing distance from the heat exchange component 120 can be determined as the target cooling furnace chamber position information, thereby shortening the moving distance and moving time of the heat exchange component 120 and the heat storage component 110, further improving the continuity and stability of the waste heat recovery process, and improving the waste heat recovery efficiency of the waste heat recovery device 100 for the roasting furnace and the energy efficiency level of the carbon anode production for aluminum.

[0103] In some examples, the control method of the roasting furnace waste heat recovery device 100 further includes:

[0104] According to the preset heat exchange amount, the operating parameters of the first power unit and / or the second power unit are adjusted.

[0105] Specifically, during the operation of the first power unit, the operating parameters of the first power unit can be adjusted in combination with the preset heat exchange rate, thereby adjusting the heat exchange rate of the waste heat recovery device 100 for the roasting furnace, so that the waste heat recovery device 100 for the roasting furnace can recover waste heat more stably. Alternatively, during the operation of the second power unit, the operating parameters of the second power unit can be adjusted in combination with the preset heat exchange rate, thereby adjusting the heat exchange rate of the waste heat recovery device 100 for the roasting furnace, so that the waste heat recovery device 100 for the roasting furnace can recover waste heat more stably. Alternatively, during the operation of the first power unit and the second power unit, the operating parameters of the first power unit and the second power unit can be adjusted in combination with the preset heat exchange rate, thereby adjusting the heat exchange rate of the waste heat recovery device 100 for the roasting furnace, so that the waste heat recovery device 100 for the roasting furnace can recover waste heat more stably.

[0106] It can be understood that the aforementioned operating parameters may include but are not limited to output flow.

[0107] In some feasible examples, the aforementioned preset heat exchange amount is determined based on the heat consumption of the downstream heat-consuming equipment, so that the heat exchange amount of the waste heat recovery device 100 for the roasting furnace can be matched with the heat demand of the downstream heat-consuming equipment, making it easier for the waste heat recovery device 100 for the roasting furnace to stably supply heat to the downstream heat-consuming equipment and improve the utilization efficiency of the waste heat after recovery.

[0108] In some feasible examples, the step of adjusting the operating parameters of the first power unit and / or the second power unit according to the preset heat exchange amount includes:

[0109] Determine the current heat exchange capacity of the waste heat recovery device 100 for the roasting furnace according to the medium input port temperature information, the medium output port temperature information, the flue gas input port temperature information and the flue gas delivery outlet temperature information;

[0110] When the current heat exchange amount is higher than the preset heat exchange amount, reducing the output flow of the first power unit and / or the second power unit;

[0111] When the current heat exchange amount is lower than the preset heat exchange amount, the output flow of the first power unit and / or the second power unit is increased.

[0112] Specifically, the aforementioned medium input port temperature information, medium output port temperature information, smoke input port temperature information and smoke delivery outlet temperature information can be obtained using the first thermometer 161, the second thermometer 162, the third thermometer 163 and the fourth thermometer 164 respectively.

[0113] In some examples, when the heat storage assembly 110 includes the second valve, the control method of the waste heat recovery device 100 for a roasting furnace further includes:

[0114] Obtaining temperature information of the heat storage medium in the accommodation space;

[0115] When the temperature of the heat storage medium in the accommodation space is higher than the preset temperature, the second valve is controlled to open until the temperature of the heat storage medium in the accommodation space is lower than the preset temperature.

[0116] Specifically, the opening and closing state of the second valve can be controlled according to the difference between the preset temperature and the temperature of the heat storage medium in the accommodation space, so that the temperature of the heat storage medium in the accommodation space can be adjusted by replenishing the heat storage medium in the accommodation space, so that the temperature of the heat storage medium in the accommodation space is kept in a relatively stable state and a higher heat loss is generated during the heat storage process.

[0117] Exemplarily, the preset temperature is greater than or equal to 80° C. and less than or equal to 90° C., for example, it may be 82° C., 85° C., or 88° C., etc.

[0118] like Figure 4 As shown, according to the third aspect of an embodiment of the present disclosure, a computer-readable storage medium 401 is proposed, and the computer-readable storage medium 401 stores a computer program 402. When the computer program 402 is executed, the control method proposed in any one of the second aspects above is implemented.

[0119] Since the computer-readable storage medium 401 provided in the embodiment of the present disclosure is used to implement the control method proposed in any one of the second aspects above, it has all the beneficial effects of the control method and will not be elaborated here.

[0120] like Figure 5 As shown, according to the fourth aspect of an embodiment of the present disclosure, a control device is proposed, comprising: a memory 501, storing a computer program; a processor 502, for executing the computer program; wherein, when the processor 502 executes the computer program, it implements the control method proposed in any one of the second aspects above.

[0121] Since the control device provided in the embodiment of the present disclosure is used to implement the control method proposed in any one of the second aspects above, it has all the beneficial effects of the control method and will not be elaborated here.

[0122] In some examples, the control device may also include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0123] In an exemplary embodiment, the control device may further include an input / output interface and a display device, wherein each functional unit may communicate with each other via a bus. The memory stores a computer program, and the processor is used to execute the program stored in the memory and execute the method in the above embodiment.

[0124] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the physical device of the method, and supports the operation of the information processing program and other software and / or programs. The network communication module is used to realize the communication between the components inside the storage medium, and the communication with other hardware and software in the information processing physical device.

[0125] Through the description of the above implementation modes, those skilled in the art can clearly understand that the present disclosure can be implemented by means of software plus a necessary general hardware platform, or can be implemented by hardware.

[0126] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0127] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0128] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0129] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0130] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A waste heat recovery device for a roasting furnace, characterized in that: include: A heat storage component is formed with a receiving space, wherein the receiving space is used to receive a heat storage medium; A heat exchange component, comprising a medium channel and a smoke channel, wherein the medium channel and the smoke channel are heat-conductingly connected, the medium input end and the medium output end of the medium channel are both connected to the accommodation space, and the smoke input end of the smoke channel is used to connect to the cooling furnace chamber of the roasting furnace; A first power component is connected between the heat storage component and the heat exchange component, and is used to drive the heat storage medium in the medium channel to flow in the direction from the medium input end to the medium output end; A second power component, disposed in the heat exchange component, for driving the gas in the smoke channel to flow in a direction from the smoke input end to the smoke output end; A driving assembly is used to drive the heat storage assembly and the heat exchange assembly to move relative to the roasting furnace.

2. The waste heat recovery device for a roasting furnace according to claim 1, characterized in that: The heat storage component comprises: A receiving groove is formed with a discharge port and the receiving space, wherein the discharge port is in communication with the receiving space; A supply channel, one end of which is connected to the heat storage medium supply device, and the other end of which is connected to the accommodating space; A first valve, used for opening or closing the discharge port; a second valve, used to open or close the supply channel; A first roller portion connected to the receiving groove; Wherein, the driving component is arranged on the heat exchange component.

3. The waste heat recovery device for a roasting furnace according to claim 1, characterized in that: The drive assembly comprises: A guide rail portion, used to be arranged on one side of the roasting furnace; A second roller portion connected to the heat exchange assembly, wherein the second roller portion is movably disposed on the guide rail portion; A driving motor is connected to the second roller portion and is used for driving the second roller portion to rotate.

4. The waste heat recovery device for a roasting furnace according to any one of claims 1 to 3, characterized in that: Also includes: A temperature detection component, used to detect temperature information of the medium channel and the smoke channel; The flow detection component is used to detect the flow information of the medium channel and the smoke channel.

5. A control method for a waste heat recovery device for a roasting furnace, characterized in that: For a waste heat recovery device for a roasting furnace according to any one of claims 1 to 4, the control method comprises: In response to the waste heat recovery instruction, obtaining target cooling furnace chamber position information; According to the target cooling furnace chamber position information, controlling the driving component to operate so that the heat storage component and the heat exchange component move to the cooling furnace chamber corresponding to the target cooling furnace chamber position information; When the smoke input end is connected to the cooling furnace chamber corresponding to the target cooling furnace chamber position information, the first power unit and the second power unit are controlled to operate.

6. The control method of the waste heat recovery device according to claim 5, characterized in that: Also includes: When the working state of the cooling furnace chamber currently connected to the flue gas input end is switched, the waste heat recovery instruction is generated.

7. The control method of the waste heat recovery device according to claim 5, characterized in that: Also includes: According to the preset heat exchange amount, the operating parameters of the first power unit and / or the second power unit are adjusted.

8. The control method of the waste heat recovery device according to any one of claims 5 to 7, characterized in that: In the case where the heat storage assembly includes a second valve, the control method further includes: Acquiring temperature information of the heat storage medium in the accommodation space; When the temperature of the heat storage medium in the accommodation space is higher than a preset temperature, the second valve is controlled to open until the temperature of the heat storage medium in the accommodation space is lower than the preset temperature.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed, the control method according to any one of claims 6 to 8 is implemented.

10. A control device, characterized in that: include: a memory storing a computer program; A processor, configured to execute the computer program; Wherein, when executing the computer program, the processor implements the control method as described in any one of claims 6 to 8.

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