Graphitization furnace coking determination system

Abstract

The application provides a graphitization furnace coking determination system. The system comprises: a graphitization furnace for producing graphitized products; a detection device located on the graphitization furnace, the detection device being used for detecting operation information of the graphitization furnace, wherein the operation information comprises gas concentration and temperature; and a processor in communication connection with the detection device, the processor being used for determining whether the graphitization furnace will have a coking phenomenon according to the size of the operation information. The detection device is installed on the graphitization furnace to detect the gas concentration and the temperature in the operation process of the graphitization furnace. If coking occurs in the graphitization furnace, the gas concentration will increase and the temperature will also increase, so that whether the graphitization furnace will have coking can be automatically determined according to the size of the gas concentration and the size of the temperature. Once coking occurs, it can be detected immediately, so that the graphitization furnace can be prevented from being completely blocked to cause a fire accident.

Description

Technical Field

[0001] This application relates to the field of graphitization furnace detection technology, and more specifically, to a graphitization furnace coking determination system, a control method for the graphitization furnace coking determination system, a control device for the graphitization furnace coking determination system, and a computer-readable storage medium. Background Technology

[0002] In some production processes, graphitization furnaces are required for the production of lithium-ion battery anode materials. These furnaces are often constructed using multiple individual furnaces connected in parallel or series. However, the operating time of each individual furnace varies depending on the specific conditions during production. Electric calcining furnaces, with their simple and compact structure, continuous and convenient operation, and ease of automation, can achieve calcination temperatures of 1800–2000℃, imparting semi-graphitized properties to some of the calcined material. They are essential thermal equipment for manufacturing carbon products, and are particularly suitable for calcining anthracite.

[0003] To meet the increasingly stringent technical and quality requirements of carbon products driven by the rapid development of high-end manufacturing and new energy sectors, graphitized anthracite is produced at calcination temperatures as high as 2300–2500℃. This results in products with superior properties such as high graphitization, high electrical conductivity, high lubricity, high melting point, high temperature resistance, high thermal shock resistance, and low thermal expansion rate. Furthermore, the ash content decreases rather than increases after high-temperature calcination, a significant advantage unmatched by traditional processes. In recent years, through vigorous promotion and application of this new product, graphitized anthracite has gained increasing customer trust and praise, and its market potential is expanding daily.

[0004] In the production of high-quality anthracite graphitized products, coking occurs on the inner wall of the furnace, becoming a key technical challenge restricting the safe, stable, and long-term operation of the graphitization furnace. However, due to the extremely high temperature inside the graphitization furnace, the extent of internal coking cannot be directly determined. It is only discovered when coking blocks all the passages inside the furnace, which can cause a rapid rise in furnace temperature and lead to a fire accident. Summary of the Invention

[0005] The main objective of this application is to provide a graphitization furnace coking determination system, a control method for the graphitization furnace coking determination system, a control device for the graphitization furnace coking determination system, and a computer-readable storage medium, so as to at least solve the problem in the prior art that it is impossible to determine whether coking has occurred in the furnace when producing high-quality anthracite graphitized products.

[0006] To achieve the above objectives, according to one aspect of this application, a coking determination system for a graphitization furnace is provided, comprising: a graphitization furnace for producing graphitized products; a detection device located on the graphitization furnace, the detection device being used to detect operating information of the graphitization furnace, wherein the operating information includes gas concentration and temperature; and a processor communicatively connected to the detection device, the processor being used to determine whether coking will occur in the graphitization furnace based on the magnitude of the operating information.

[0007] Optionally, the detection device includes: a concentration detection device located at one end near the feed port of the graphitization furnace, the concentration detection device being used to detect the gas concentration in the graphitization furnace; and a temperature detection device located at one end near the heating chamber of the graphitization furnace, the temperature detection device being used to detect the temperature of the graphitization furnace.

[0008] Optionally, the concentration detection device is located between the graphite electrode and the high-alumina brick insulation layer of the graphitization furnace.

[0009] Optionally, the temperature detection device is located on the high-alumina bricks of the graphitization furnace and on the carbon bricks of the graphitization furnace.

[0010] According to another aspect of this application, a control method for any of the graphitization furnace coking determination systems is provided, the method comprising: acquiring operating information of the graphitization furnace, wherein the operating information includes gas concentration and temperature; and determining whether coking will occur in the graphitization furnace based on the magnitude of the operating information.

[0011] Optionally, the detection device includes a concentration detection device and a temperature detection device. The concentration detection device is located at one end near the feed port of the graphitization furnace and is used to detect the gas concentration in the graphitization furnace. The temperature detection device is located at one end near the heating chamber of the graphitization furnace and is used to detect the temperature of the graphitization furnace. The device acquires operating information of the graphitization furnace, including: acquiring the gas concentration at the feed port of the graphitization furnace; and acquiring the temperature at the heating chamber of the graphitization furnace.

[0012] Optionally, determining whether coking will occur in the graphitization furnace based on the magnitude of the operating information includes: generating a first curve based on multiple gas concentrations obtained within a target duration, wherein the target duration includes multiple time points, and each time point corresponds to a gas concentration; determining whether there is a first abrupt change point in the first curve, wherein the first abrupt change point is a data point where the concentration difference between the gas concentration at time N and the gas concentration at time N-1 is greater than a first difference threshold; generating a second curve based on multiple temperatures obtained within the target duration, wherein each time point corresponds to a temperature; and determining whether there is a second abrupt change point in the second curve, wherein the second abrupt change point is the temperature at time N and the temperature at time N-1. The data points where the temperature difference is greater than the second difference threshold; if there is a first abrupt change point in the first curve and a second abrupt change point in the second curve, it is determined that the graphitization furnace will experience coking; if there is no first abrupt change point in the first curve and a second abrupt change point in the second curve, it is determined that the graphitization furnace will not experience coking; if there is a first abrupt change point in the first curve and no second abrupt change point in the second curve, it is determined that the graphitization furnace will not experience coking; if there is no first abrupt change point in the first curve and no second abrupt change point in the second curve, it is determined that the graphitization furnace will not experience coking.

[0013] Optionally, determining whether coking will occur in the graphitization furnace based on the magnitude of the operating information includes: obtaining a first rate of change of the gas concentration, wherein the first rate of change is the amount of change in the gas concentration within a target duration; obtaining a second rate of change of the temperature, wherein the second rate of change is the amount of change in the temperature within the target duration; determining that coking will occur in the graphitization furnace if both the first rate of change is greater than or equal to a preset rate of change of concentration and the second rate of change is greater than or equal to a preset rate of change of temperature; determining that coking will not occur in the graphitization furnace if both the first rate of change is less than the preset rate of change of concentration and the second rate of change is greater than or equal to the preset rate of change of temperature; determining that coking will not occur in the graphitization furnace if both the first rate of change is greater than or equal to the preset rate of change of concentration and the second rate of change is less than the preset rate of change of temperature; and determining that coking will not occur in the graphitization furnace if both the first rate of change is less than the preset rate of change of concentration and the second rate of change is less than the preset rate of change of temperature.

[0014] According to another aspect of this application, a control device for any of the graphitization furnace coking determination systems is provided, the device comprising: an acquisition unit for acquiring operating information of the graphitization furnace, wherein the operating information includes gas concentration and temperature; and a determination unit for determining whether coking will occur in the graphitization furnace based on the magnitude of the operating information.

[0015] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to execute any of the control methods of the graphitization furnace coking determination system.

[0016] By applying the technical solution of this application, a detection device is installed on the graphitization furnace to detect the gas concentration and temperature during the operation of the graphitization furnace. If coking occurs in the graphitization furnace, the gas concentration and temperature will increase accordingly. Therefore, the graphitization furnace can be automatically determined to be coking based on the gas concentration and temperature. Once coking occurs, it can be detected immediately, which can also prevent the graphitization furnace from becoming completely blocked and causing an accident of flame ejection. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 A schematic diagram of the coking determination system for a graphitization furnace according to this application is shown;

[0019] Figure 2 A schematic diagram of another graphitization furnace coking determination system of this application is shown;

[0020] Figure 3 A hardware block diagram of a mobile terminal for performing a control method for a graphitization furnace coking determination system is shown in an embodiment of this application.

[0021] Figure 4 A schematic flowchart of a control method for a coking determination system in a graphitization furnace according to an embodiment of this application is shown.

[0022] Figure 5 A schematic diagram showing the gas component concentration monitoring results when no coking occurs;

[0023] Figure 6 A schematic diagram showing the external temperature monitoring results of a high-temperature furnace without coking is presented.

[0024] Figure 7 A schematic diagram showing the relationship between the gas composition in the upper part of the graphitization furnace and time and flame alarm changes is shown;

[0025] Figure 8 A structural block diagram of a control device for a graphitization furnace coking determination system provided according to an embodiment of this application is shown.

[0026] The above figures include the following reference numerals:

[0027] 10. Graphitization furnace; 11. Concentration detection device; 12. Temperature detection device; 13. Graphite electrode; 14. High alumina brick insulation layer; 15. High alumina brick; 16. Carbon brick; 17. Water-cooled wall; 18. Cooling bracket; 102. Processor; 104. Memory; 106. Transmission equipment; 108. Input / output device. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] The inventors of this application have discovered that there are many reasons for coking in high-temperature furnaces. The most important reason is that during the oxygen-free calcination process of raw coal, not only are large amounts of small molecule gases such as H2, CO, H2S, SO2, COS, and CH4 produced, but also organic volatiles with a certain degree of adhesion are produced. In relatively low-temperature areas, these substances are easily adsorbed and adhered to the surface of coal particles and the furnace wall. This is an important reason why the material layer in the preheating section of the graphitization furnace often exhibits the phenomenon of "caking", and it is also an important reason why a large number of coal particles are coated in the coke layer on the inner wall of the preheating and calcination sections.

[0032] However, due to the extremely high temperatures inside graphitization furnaces, current methods cannot directly detect internal coking. If coking occurs without effective early warning, it can range from impacting production and product quality, leading to significant resource waste, to more serious issues like furnace fires caused by coking blocking the pyrolysis gas exhaust channels and resulting in a rapid increase in localized furnace temperature. Current production practices rely on periodically monitoring changes in the high-temperature furnace electrode current for prediction, but this method is inefficient and unreliable, still primarily dependent on manual labor.

[0033] Based on a review of existing literature, the inventors of this application have found no reports on early warning systems for coking within graphitization furnaces. Therefore, this invention proposes a method for effectively predicting coking within high-temperature graphitization furnaces, based on long-term data analysis of changes in CO and hydrocarbon concentrations escaping from the feed port and their correlation with the real-time temperature of the furnace shell.

[0034] As described in the background section, in the prior art, it is impossible to determine whether coking has occurred in the furnace when producing high-quality anthracite graphitized products. To solve the above problem, embodiments of this application provide a graphitization furnace coking determination system, a control method for the graphitization furnace coking determination system, a control device for the graphitization furnace coking determination system, and a computer-readable storage medium.

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0036] This application provides a system for determining coking in a graphitization furnace, such as... Figure 1 and Figure 2 As shown, it includes:

[0037] Graphitization furnace 10, used for producing graphitized products;

[0038] A detection device is located on the graphitization furnace. The detection device is used to detect the operating information of the graphitization furnace, wherein the operating information includes gas concentration and temperature.

[0039] The processor is communicatively connected to the aforementioned detection device. The processor is used to determine whether coking will occur in the aforementioned graphitization furnace based on the magnitude of the aforementioned operating information.

[0040] Currently, it is impossible to determine whether coking has occurred inside the graphitization furnace. Blockage can only be observed manually when it becomes extremely severe and completely clogged. However, by this point, the blockage is already very serious, and the graphitization furnace is prone to flame-throwing accidents. In this solution, a detection device is installed on the graphitization furnace to monitor the gas concentration and temperature during operation. If coking occurs, the gas concentration and temperature will increase accordingly. Therefore, the system can automatically determine whether coking is occurring based on the gas concentration and temperature. Once coking occurs, it can be detected immediately, thus preventing complete blockage and flame-throwing accidents caused by the graphitization furnace.

[0041] In specific implementation schemes, such as Figure 1 and Figure 2 As shown, the detection device includes a concentration detection device 11 and a temperature detection device 12. The concentration detection device is located at one end near the feeding port of the graphitization furnace and is used to detect the gas concentration in the graphitization furnace. The temperature detection device is located at one end near the heating chamber of the graphitization furnace and is used to detect the temperature of the graphitization furnace.

[0042] In this scheme, by setting up a concentration detection device, the concentrations of CO, CxHy, CO2, H2 and CH4 at the furnace opening can be monitored online. By setting up a temperature detection device, the temperature at the heating chamber of the graphitization furnace can be monitored online. This allows for subsequent analysis of the gas diffusion within the furnace and the temperature rise within the furnace.

[0043] Specifically, the detection response time of the detection device can be within 1 second, or any other feasible response time. Concentration detection devices include, but are not limited to, pump-suction infrared detectors, photoionization gas detectors, and ultraviolet spectrometers. Temperature detection devices include, but are not limited to, infrared thermal imagers distributed on the outer shell of high-temperature furnaces.

[0044] Specifically, the temperature detection device can be an infrared probe, with several infrared probes distributed on the outside of the furnace shell.

[0045] In some embodiments, such as Figure 2As shown, the concentration detection device is located between the graphite electrode 13 and the high-alumina brick insulation layer 14 of the graphitization furnace. Generally, the gas generated by heating in the graphitization furnace rises to the surface. Therefore, the concentration detection device can be placed at the feeding port, specifically between the graphite electrode and the high-alumina brick insulation layer of the graphitization furnace. This allows for the detection of the gas concentration immediately after the gas is generated by heating in the graphitization furnace, ensuring high data accuracy.

[0046] In some embodiments, such as Figure 2 As shown, the temperature detection device is located on the high-alumina brick 15 and the carbon brick 16 of the graphitization furnace. The inventors of this application have discovered that coking mainly occurs on the bricks, especially on the high-alumina bricks, where coking is more likely to occur. Therefore, the temperature detection device can be placed on the blast furnace bricks and the carbon bricks.

[0047] Specifically, Figure 2 The coking system of the graphitization furnace also includes a water-cooled wall 17 and a cooling support 18. The water-cooled wall protects the furnace chamber and walls from high temperature and high pressure erosion, extending the furnace's service life. The water-cooled wall cools the furnace walls through internal water flow, cooling the high-temperature flue gas generated inside the furnace and preventing overheating, thus maintaining a suitable temperature inside the furnace. The cooling support is a structure that supports and fixes the water-cooled wall. It is typically made of metal, possessing good heat resistance and structural strength. The cooling support supports the water-cooled wall, keeping it in the correct position, and provides necessary support and fixation to prevent vibration and deformation. The cooling support also conducts some heat, helping to achieve uniform heat distribution and dissipation. The floor refers to the height of the floors spanned by the graphitization furnace.

[0048] Coking usually leads to an increase in gas pressure. In order to monitor the coking situation in the graphitization furnace, pressure sensors can be installed at the gas inlet and outlet of the graphitization furnace. The pressure sensors are used to monitor changes in gas pressure inside the furnace.

[0049] Coking can lead to an increase in the organic matter content in flue gas. In order to monitor the coking situation in the graphitization furnace, a flue gas analyzer can be installed in the flue of the graphitization furnace. The flue gas analyzer is used to analyze the composition of the flue gas in the furnace.

[0050] To monitor coking in graphitization furnaces, thermal imagers can be installed inside. These imagers can be mounted on the side or top of the furnace and use infrared thermal radiation to detect the temperature distribution. By detecting hot and cold spots in the furnace, the presence of coking can be determined.

[0051] To monitor coking in the graphitization furnace, vibration sensors can be installed inside. These sensors can be mounted on the bottom or side of the furnace and can monitor its vibration. When coking occurs inside the furnace, the furnace will vibrate due to uneven internal temperature. By monitoring this vibration, it is possible to determine if coking is present.

[0052] To monitor coking in graphitization furnaces, acoustic sensors can be installed inside. These sensors can be mounted on the side or top of the furnace and can detect changes in sound within the furnace. When coking occurs, the presence of coke obstructs airflow inside the furnace, producing sounds different from normal conditions. By monitoring these sound changes, the presence of coking can be determined.

[0053] To monitor coking in graphitization furnaces, a camera monitoring system can be installed inside the furnace. The camera or monitoring system can be installed inside the furnace to observe the internal conditions in real time. The installation location can be chosen from the top or side of the furnace to provide the best field of view. By observing characteristics such as color, shape, and flue gas inside the furnace, it is possible to determine if coking problems exist.

[0054] To monitor coking in the graphitization furnace, flow meters can be installed inside the furnace. These flow meters are mounted on the furnace's inlet pipe or fuel supply pipe and can monitor changes in the flow rate of the gas or fuel. When coking occurs, the flow rate of the gas or fuel may be obstructed or altered, and this change can be detected by the flow meter.

[0055] The methods and embodiments provided in this application can be executed on a mobile terminal, a computer terminal, or a similar computing device. Taking running on a mobile terminal as an example, Figure 3 This is a hardware structure block diagram of a mobile terminal for a control method of a graphitization furnace coking determination system according to an embodiment of the present invention. Figure 3 As shown, a mobile terminal may include one or more ( Figure 3 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 3 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 3 The more or fewer components shown, or having the same Figure 3 The different configurations shown.

[0056] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the device information display method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0057] This embodiment provides a control method for a graphitization furnace coking determination system running on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0058] Figure 4 This is a flowchart illustrating a control method for a coking determination system in a graphitization furnace according to an embodiment of this application. Figure 4 As shown, the method includes the following steps:

[0059] Step S201: Obtain the operating information of the graphitization furnace, wherein the operating information includes gas concentration and temperature;

[0060] Specifically, the gas concentration at the feed port of the graphitization furnace can be obtained. The gas concentration can be the concentration of CO (carbon monoxide) or the concentration of CxHy (carbon and hydrogen compounds such as methane (CH4), ethane (C2H6), propane (C3H8), etc.).

[0061] Specifically, the temperature of the furnace shell of the graphitization furnace can also be obtained.

[0062] Step S202: Determine whether coking will occur in the graphitization furnace based on the magnitude of the above operating information.

[0063] Specifically, by monitoring whether there is a sudden increase in the concentration of CO or CxHy at the feed port, and the corresponding slow increase in the furnace shell temperature, the coking condition inside the furnace can be effectively predicted.

[0064] In this embodiment, a detection device is installed on the graphitization furnace to detect the gas concentration and temperature during the operation of the graphitization furnace. If coking occurs in the graphitization furnace, the gas concentration and temperature will increase accordingly. Therefore, the graphitization furnace can be automatically determined to be coking based on the gas concentration and temperature. Once coking occurs, it can be detected immediately, which can also prevent the graphitization furnace from becoming completely blocked and causing an accident of flame ejection.

[0065] Specifically, in this scheme, the internal operating conditions of the graphitization furnace can be monitored during operation to prevent localized high temperatures caused by coking and blockage, which could damage the electrodes or even lead to serious fire accidents.

[0066] The inventors of this application have discovered that coking in high-temperature furnaces is mainly caused by the cooling and solidification of high-temperature gases such as tar and alkali metal oxides produced during high-temperature coal pyrolysis when they come into contact with the low-temperature materials just entering the furnace at the feed inlet. Therefore, once coking occurs, the flow of internal pyrolysis gases will inevitably change. At this time, the coking situation inside the furnace can be effectively judged by detecting the gas composition at the furnace inlet. Once coking occurs in a high-temperature furnace, the internal temperature will inevitably change. The temperature in the local high-temperature blockage area will rise sharply, while the temperature in the discharge cooling section will drop due to the reduction of material. Therefore, these temperature changes can be directly reflected by external online temperature monitoring. In the specific implementation process, the aforementioned detection device includes a concentration detection device and a temperature detection device. The concentration detection device is located at one end near the feeding port of the graphitization furnace and is used to detect the gas concentration in the graphitization furnace. The temperature detection device is located at one end near the heating chamber of the graphitization furnace and is used to detect the temperature of the graphitization furnace. Obtaining the operating information of the graphitization furnace can be achieved through the following steps: obtaining the gas concentration at the feeding port of the graphitization furnace; obtaining the temperature at the heating chamber of the graphitization furnace.

[0067] In this scheme, one of the early warning methods for graphitization furnaces is to monitor the concentrations of CO, CxHy, CO2, H2, and CH4 at the furnace inlet online, thereby analyzing the gas diffusion inside the furnace and further accurately determining the coking status of the graphitization furnace. The coking status of the graphitization furnace can also be further accurately determined by monitoring the temperature at the heating chamber of the graphitization furnace.

[0068] Specifically, the concentrations of CO and CxHy generally range from 10 to 500 ppm, and the temperature of the furnace shell generally ranges from 100 to 350°C.

[0069] The trends of CO and CxHy concentration changes at the high-temperature furnace feed port and the furnace shell temperature changes are used to predict coking inside the furnace. One typical operating condition is that the CO and CxHy concentrations increase abruptly while the furnace shell temperature rises slowly.

[0070] Specifically, a database relating CO and CxHy concentrations, furnace shell temperature, and coking status can be constructed. By detecting the trends in CO and CxHy concentrations at the high-temperature furnace feed inlet and the trends in furnace shell temperature, the coking status of anthracite coal inside the high-temperature furnace can be effectively predicted.

[0071] The above-mentioned scheme in this application collected CO and volatile organic compound concentration data at the high-temperature furnace inlet, and simultaneously collected coking warning (flame-spraying) data in the furnace during the same period. It can be determined that the alarm points all occurred before the peak CO concentration. When gas accumulates in the high-temperature furnace, the main gas component is the cracked gas produced by the high-temperature pyrolysis of coal, and the main components are CO and other hydrocarbon organic compounds.

[0072] To further automate the monitoring of whether coking will occur in the graphitization furnace, this application determines whether coking will occur based on the magnitude of the aforementioned operational information through the following steps: Generating a first curve based on multiple gas concentrations obtained within a target duration, wherein the target duration includes multiple time points, and each time point corresponds to a specific gas concentration; determining whether there is a first abrupt change point in the first curve, wherein the first abrupt change point is a data point where the concentration difference between the gas concentration at time N and the gas concentration at time N-1 is greater than a first difference threshold; generating a second curve based on multiple temperatures obtained within the target duration, wherein each time point corresponds to a specific temperature; determining whether there is a second abrupt change point in the second curve, wherein the second abrupt change point... The data point is defined as the point where the temperature difference between the temperature at time N and the temperature at time N-1 is greater than a second difference threshold. If both the first and second curves show a first abrupt change, it is determined that the graphitization furnace will experience coking. If neither the first nor the second curve shows a first abrupt change, it is determined that the graphitization furnace will not experience coking. Similarly, if neither the first nor the second curve shows a first abrupt change, it is determined that the graphitization furnace will not experience coking.

[0073] This solution generates graphs and observes for abrupt changes to detect potential coking in the graphitization furnace. Once an abrupt change is detected, coking can be immediately confirmed, allowing for timely repairs and preventing the coking from worsening. The generated graphs also identify the furnace's operational trends, enabling early prediction of potential coking and allowing for appropriate maintenance, thus reducing the risk of coking and further lowering costs.

[0074] Specifically, the gas component concentration monitoring data obtained when the high-temperature furnace is operating smoothly without coking is as follows: Figure 5 As shown, the corresponding external temperature monitoring data of the high-temperature furnace at this time is as follows: Figure 6 As shown, both the temperature and gas concentration curves are flat at this point, with no sudden changes, indicating that the high-temperature furnace is operating normally.

[0075] Specifically, the monitoring data of gas component concentrations during coking in high-temperature furnaces are as follows: Figure 7As shown, it can be determined that there is a significant correlation between coking alarm and CO concentration at the furnace mouth. When an alarm is triggered before the CO concentration reaches its peak, it indicates that changes in CO concentration can provide an early warning for high-temperature furnace ignition. Of course, the same applies to temperature monitoring data, where abrupt changes occur.

[0076] In specific applications, the first difference threshold can be a carbon monoxide concentration difference of 500 ppm, a carbon dioxide concentration difference of 10%, or a water vapor difference of 10%, or any other feasible value. The second difference threshold can be an internal temperature of 2200 degrees Celsius in the graphitization furnace, or a furnace surface temperature exceeding 1000 degrees Celsius, or any other feasible value.

[0077] There are many reasons for an increase in gas concentration and temperature in a graphitization furnace, but the only reason that can cause both an increase in gas concentration and temperature is coking. Therefore, coking can only be confirmed when both the gas concentration and temperature conditions mentioned above are met.

[0078] To further automate the monitoring of whether coking will occur in the graphitization furnace, this application determines whether coking will occur based on the aforementioned operating information through the following steps: obtaining a first rate of change of the gas concentration, wherein the first rate of change is the change in the gas concentration within a target time period; obtaining a second rate of change of the temperature, wherein the second rate of change is the change in the temperature within the target time period; determining that coking will occur in the graphitization furnace when both the first rate of change is greater than or equal to a preset rate of change of concentration and the second rate of change is greater than or equal to a preset rate of change of temperature; determining that coking will not occur in the graphitization furnace when both the first rate of change is less than the preset rate of change of concentration and the second rate of change is greater than or equal to the preset rate of change of temperature; determining that coking will not occur in the graphitization furnace when both the first rate of change is greater than or equal to the preset rate of change of concentration and the second rate of change is less than the preset rate of change of temperature; and determining that coking will not occur in the graphitization furnace when both the first rate of change is less than the preset rate of change of concentration and the second rate of change is less than the preset rate of change of temperature.

[0079] This solution detects abnormalities in the graphitization furnace by monitoring changes in gas concentration and temperature, enabling timely identification of coking phenomena. This early warning system helps prevent losses caused by coking. If the graphitization furnace is left to become severely clogged and its passageways are completely blocked before repairs are made, it will suffer serious damage, requiring more costly and large-scale repairs or replacements. Early detection of coking reduces maintenance costs and downtime, thereby improving production efficiency.

[0080] In practical applications, the preset concentration change rate can be 10%, 5%, or 1%, or any other feasible rate. If the concentration change rate of the gas inside the furnace exceeds 10%, it may lead to unstable combustion, uneven distribution of heat generated by combustion, resulting in localized overheating and coking. When the concentration change rate of the gas inside the furnace exceeds 5%, it may cause incomplete combustion, resulting in excessive unburned substances in the combustion products, which may accumulate inside the furnace and form coke. Even a change rate of only 1% in the gas concentration inside the furnace may have a certain impact on the combustion process, especially when the fuel contains unstable components. In this case, a small change in gas concentration may lead to unstable combustion, thereby causing coking.

[0081] The preset temperature change rate can be 10℃ / min, 5℃ / min, or 1℃ / min, or any other feasible rate. When the furnace temperature change rate exceeds 10℃ / min, it may lead to instability in the combustion reaction, uneven distribution of heat generated by combustion, resulting in localized overheating and coking. When the furnace temperature change rate exceeds 5℃ / min, it may cause incomplete combustion, resulting in excessive unburned substances in the combustion products, which may accumulate in the furnace and form coke. Even a furnace temperature change rate of only 1℃ / min may have a certain impact on the combustion process, especially when the fuel contains unstable components. In this case, a small temperature change may lead to instability in the combustion reaction, thereby causing coking.

[0082] Coking typically leads to increased gas pressure, and coking inside the furnace usually results in increased furnace pressure. To determine if coking has occurred inside the furnace, the actual pressure can be compared to the pressure range under normal operating conditions. For example, the normal operating pressure range is 1.5 to 2.5 MPa; if the actual pressure exceeds 2.5 MPa, coking may be present.

[0083] Coking leads to an increase in the organic matter content of flue gas, and coking inside the furnace causes changes in the flue gas composition, such as a decrease in oxygen content and an increase in CO2 content. To determine if coking has occurred inside the furnace, the actual flue gas composition can be compared with that under normal operating conditions. For example, the CO2 content under normal operating conditions is 10% to 15%; if the actual CO2 content exceeds 15%, coking may be present.

[0084] To monitor coking in graphitization furnaces, vibration sensors can be installed. When coking occurs inside the furnace, the furnace will vibrate due to uneven internal temperature. Coking may alter the vibration pattern. The presence of coking can be determined by comparing the actual vibration with that under normal operating conditions. For example, the vibration amplitude under normal operating conditions ranges from 0.1 to 0.3 mm. If the actual vibration amplitude exceeds 0.3 mm, coking may be present.

[0085] To monitor coking in graphitization furnaces, acoustic sensors can be installed. When coking occurs, the presence of coke obstructs airflow within the furnace, producing a sound different from normal conditions. Coking can alter the sound, making it more muffled or producing unusual noises. The presence of coking can be determined by comparing the actual sound with that under normal operating conditions. For example, the sound under normal operating conditions is a uniform, low-pitched sound; if the actual sound becomes abnormally sharp or chaotic, coking may be present.

[0086] To monitor coking in graphitization furnaces, camera monitoring systems can be installed inside. These cameras or systems can be mounted inside the furnace to allow real-time observation of the internal conditions. Coking inside the furnace typically results in carbon deposits or coke buildup on the furnace walls or inside the pipes. The presence of coking can be determined by observing images captured by the camera. For example, if the camera images show a significant amount of black or gray carbon deposits on the furnace walls, coking may be present.

[0087] To monitor coking in the graphitization furnace, flow meters can be installed. When coking occurs, the flow rate of gas or fuel may be obstructed or altered, and this change can be detected by the flow meter. Coking in the furnace may lead to a reduction in fuel or medium flow. To determine if coking has occurred in the furnace, the actual flow rate can be compared with the flow rate under normal operating conditions. For example, if the fuel flow rate under normal operating conditions is 1000 kg / h to 1500 kg / h, and the actual fuel flow rate drops below 500 kg / h, coking may be present.

[0088] Here are three examples to illustrate this:

[0089] ① When the pressure is greater than the pressure threshold of 150 kPa and the particulate matter concentration is greater than 100 mg / m³ 3 The following conditions must be met: CO concentration greater than 50 ppm, vibration amplitude exceeding 0.5 mm, sound frequency greater than 100 Hz, image recognition algorithm detecting black substances inside the furnace, and flow rate less than 100 m³ / h. 3 When the temperature is greater than 800℃ and the oxygen concentration is less than 10%, the coking situation of graphitization is determined.

[0090] ② When the pressure is greater than the pressure threshold of 200 kPa and the particulate matter concentration is greater than 150 mg / m³ 3 NOx concentration greater than 100 ppm, vibration amplitude exceeding 1 mm, sound frequency greater than 150 Hz, image recognition algorithm detecting obvious coking material inside the furnace, and flow rate less than 80 m³ / h 3 When the temperature is greater than 900℃ and the carbon dioxide concentration is greater than 5%, the coking situation of graphitization is determined.

[0091] ③ When the pressure is greater than the pressure threshold of 180 kPa and the particulate matter concentration is greater than 120 mg / m³ 3 SOx concentration greater than 50 ppm, vibration amplitude exceeding 0.8 mm, sound frequency greater than 120 Hz, image recognition algorithm detecting some coking material inside the furnace, flow rate less than 90 m³ / h 3 The graphitization process is determined when the temperature is greater than 850℃ and the carbon monoxide concentration is greater than 30%, and the coking situation occurs.

[0092] The priority of these parameters can be set according to the actual situation. Generally, pressure and flue gas composition are probably the most direct parameters reflecting the coking situation, so they can be set with higher priority. Vibration, sound changes, and images captured by cameras can be used as auxiliary parameters to judge the coking situation, and can be set with lower priority. Flow meter readings, temperature, and gas concentration can be used as supplementary parameters to further confirm the coking situation. The specific priority settings can be determined based on the severity of coking in the furnace and its impact on the production process.

[0093] The following methods can be used to determine if coking is occurring in the furnace: 1. **Inspection based on furnace pressure and flue gas composition:** Increased furnace pressure and the presence of abnormal substances in the flue gas, such as high concentrations of carbon oxides or particulate matter, indicate coking. 2. **Inspection based on vibration and sound changes:** Abnormal vibrations and sound changes in the furnace suggest coking and are considered a high-priority indicator. 3. **Inspection based on camera images:** Images showing blockages or carbon buildup indicate coking and are considered a high-priority indicator. 4. **Inspection based on gas flow rate:** Decreased gas flow rate suggests coking and is considered a high-priority indicator. 5. **Inspection based on temperature and gas concentration:** Increased furnace temperature and an abnormally high gas concentration suggest coking and are considered a high-priority indicator.

[0094] The composition of flue gas is a crucial indicator for assessing coking within the furnace. Changes in the concentrations of gases such as CO2 and CO can reflect combustion efficiency and the degree of coking. Therefore, flue gas composition can be set as the highest priority parameter. An increase in furnace temperature may be an indicator of coking. Therefore, furnace temperature can be set as the second highest priority parameter. Changes in furnace pressure may be related to coking, but its sensitivity is lower than that of temperature and flue gas composition. Therefore, furnace pressure can be set as the third highest priority parameter. Camera images can provide real-time visual information about the furnace. While it can be used to detect signs of coking, its sensitivity is relatively low, so it can be set as the fourth highest priority parameter. Changes in vibration and sound may be related to coking within the furnace, but their sensitivity is relatively low, so they can be set as the lowest priority parameters.

[0095] Here are five specific numerical examples illustrating the conditions for setting priority:

[0096] Flue gas composition: CO2 concentration increases from 5% to 10% from the initial value, indicating a high priority and a higher probability of coking.

[0097] Temperature: When the furnace temperature rises from the initial value of 500℃ to 600℃, the priority is second highest, and the possibility of coking is relatively high.

[0098] Furnace pressure: When the furnace pressure increases from the initial value of 1.5 MPa to 2 MPa, it is the second highest priority and has a higher probability of coking.

[0099] The image captured by the camera shows black material adhering to the inside of the furnace, indicating a low priority and a low probability of coking.

[0100] Vibration and sound changes: Slight vibration and sound changes inside the furnace are of the lowest priority and indicate a low probability of coking.

[0101] The technical problem this application aims to solve is to overcome the shortcomings of existing technologies and provide a method for effectively predicting coking inside high-temperature furnaces. By monitoring the concentrations of typical organic compounds CO and CxHy hydrocarbons at the high-temperature furnace feed port and observing the correlation with the temperature field changes of the furnace shell, the occurrence of coking problems inside the high-temperature furnace can be effectively predicted. The basic concept of the technical solution adopted in this application is: to remotely monitor the combustible gas at the furnace mouth of the high-temperature graphitization furnace online, analyze the possible changes in the composition of combustible gases, and combine this with real-time temperature data of the furnace shell and relevant operating parameters of the high-temperature furnace. By analyzing the correlation between temperature operating parameters and changes in combustible gas composition, a prediction of coking inside the furnace can be provided.

[0102] The main functions of the above-mentioned solution in this application are reflected in:

[0103] (1) Reduce the number of maintenance visits and save on daily maintenance costs:

[0104] Because the internal workings of the graphitization furnace are not visible, previous maintenance required periodic disassembly and inspection, regardless of whether the machine was functioning properly or not. This resulted in a huge workload, making it impossible to perform maintenance as needed and consuming a significant amount of manpower. The solution proposed in this application, however, can significantly reduce the frequency of routine maintenance.

[0105] (2) Eliminate safety accidents caused by accidental flames and avoid loss of property and life:

[0106] Currently, accidents such as coking and flame-spitting in high-temperature graphitization furnaces are unpredictable and can only be dealt with after they occur. This not only affects production and causes economic losses but also risks personnel injuries. The solution proposed in this application, however, will prevent flame-spitting accidents, eliminating production safety hazards. Furthermore, it will allow for the prediction of the impact of flame-spitting, effectively preventing safety accidents and significantly reducing the workload of manual inspections.

[0107] This application also provides a control device for a graphitization furnace coking determination system. It should be noted that the control device for the graphitization furnace coking determination system in this application can be used to execute the control method for the graphitization furnace coking determination system provided in this application. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0108] The control device for the graphitization furnace coking determination system provided in the embodiments of this application will be described below.

[0109] Figure 8This is a structural block diagram of a control device for a graphitization furnace coking determination system according to an embodiment of this application.

[0110] like Figure 8 As shown, the device includes:

[0111] The acquisition unit 100 is used to acquire the operating information of the graphitization furnace, wherein the operating information includes gas concentration and temperature;

[0112] The determining unit 200 is used to determine whether coking will occur in the graphitization furnace based on the magnitude of the above operating information.

[0113] In this embodiment, a detection device is installed on the graphitization furnace to detect the gas concentration and temperature during the operation of the graphitization furnace. If coking occurs in the graphitization furnace, the gas concentration and temperature will increase accordingly. Therefore, the graphitization furnace can be automatically determined to be coking based on the gas concentration and temperature. Once coking occurs, it can be detected immediately, which can also prevent the graphitization furnace from becoming completely blocked and causing an accident of flame ejection.

[0114] The inventors of this application have discovered that coking in high-temperature furnaces is mainly caused by the cooling and solidification of high-temperature gases such as tar and alkali metal oxides produced during high-temperature coal pyrolysis when they come into contact with the low-temperature materials just entering the furnace at the feed inlet. Therefore, once coking occurs, the flow of internal pyrolysis gases will inevitably change. At this time, the coking situation inside the furnace can be effectively determined by detecting the gas composition at the furnace inlet. Once coking occurs in a high-temperature furnace, the internal temperature will inevitably change. Local high-temperature blockage areas will experience a sharp temperature increase, while the temperature in the discharge cooling section will decrease due to the reduction in material. Therefore, these temperature changes can be directly reflected by external online temperature monitoring. Specifically… In the implementation process, the detection device includes a concentration detection device and a temperature detection device. The concentration detection device is located at one end near the feeding port of the graphitization furnace and is used to detect the gas concentration in the graphitization furnace. The temperature detection device is located at one end near the heating chamber of the graphitization furnace and is used to detect the temperature of the graphitization furnace. The acquisition unit includes a first acquisition module and a second acquisition module. The first acquisition module is used to acquire the gas concentration at the feeding port of the graphitization furnace, and the second acquisition module is used to acquire the temperature at the heating chamber of the graphitization furnace.

[0115] In this scheme, one of the early warning methods for graphitization furnaces is to monitor the concentrations of CO, CxHy, CO2, H2, and CH4 at the furnace inlet online, thereby analyzing the gas diffusion inside the furnace and further accurately determining the coking status of the graphitization furnace. The coking status of the graphitization furnace can also be further accurately determined by monitoring the temperature at the heating chamber of the graphitization furnace.

[0116] To further automate the monitoring of whether coking will occur in the graphitization furnace, the determining unit of this application includes a first generation module, a first determining module, a second generation module, a second determining module, a third determining module, a fourth determining module, a fifth determining module, and a sixth determining module. The first generation module generates a first curve based on multiple gas concentrations obtained within a target duration, wherein the target duration includes multiple time points, and each time point corresponds to a gas concentration. The first determining module determines whether there is a first abrupt change point in the first curve, wherein the first abrupt change point is a data point where the concentration difference between the gas concentration at time N and the gas concentration at time N-1 is greater than a first difference threshold. The second generation module generates a second curve based on multiple temperatures obtained within the target duration, wherein each time point corresponds to a temperature. The second determining module determines whether there is a second abrupt change point in the second curve. The second abrupt change point is a data point where the temperature difference between the temperature at time N and the temperature at time N-1 is greater than a second difference threshold. The third determining module determines that the graphitization furnace will experience coking if both the first and second abrupt change points are present in the first and second curves. The fourth determining module determines that the graphitization furnace will not experience coking if neither the first nor the second abrupt change point is present in the first and second curves. The fifth determining module determines that the graphitization furnace will not experience coking if both the first and second abrupt change points are present in the first and second curves. The sixth determining module determines that the graphitization furnace will not experience coking if neither the first nor the second abrupt change point is present in the first and second curves.

[0117] This solution generates graphs and observes for abrupt changes to detect potential coking in the graphitization furnace. Once an abrupt change is detected, coking can be immediately confirmed, allowing for timely repairs and preventing the coking from worsening. The generated graphs also identify the furnace's operational trends, enabling early prediction of potential coking and allowing for appropriate maintenance, thus reducing the risk of coking and further lowering costs.

[0118] To further automate the monitoring of whether coking will occur in the graphitization furnace, the determining unit of this application includes a third acquisition module, a fourth acquisition module, a seventh determining module, an eighth determining module, a ninth determining module, and a tenth determining module. The third acquisition module is used to acquire a first rate of change of the gas concentration, wherein the first rate of change is the amount of change of the gas concentration within a target time period; the fourth acquisition module is used to acquire a second rate of change of the temperature, wherein the second rate of change is the amount of change of the temperature within the target time period; the seventh determining module is used to determine the above when both the first rate of change is greater than or equal to a preset concentration rate of change and the second rate of change is greater than or equal to a preset temperature rate of change. The graphitization furnace may experience the aforementioned coking phenomenon; the eighth determining module is used to determine that the graphitization furnace will not experience the aforementioned coking phenomenon if the first change rate is less than the preset concentration change rate and the second change rate is greater than or equal to the preset temperature change rate; the ninth determining module is used to determine that the graphitization furnace will not experience the aforementioned coking phenomenon if the first change rate is greater than or equal to the preset concentration change rate and the second change rate is less than the preset temperature change rate; the tenth determining module is used to determine that the graphitization furnace will not experience the aforementioned coking phenomenon if the first change rate is less than the preset concentration change rate and the second change rate is less than the preset temperature change rate.

[0119] This solution detects abnormalities in the graphitization furnace by monitoring changes in gas concentration and temperature, enabling timely identification of coking phenomena. This early warning system helps prevent losses caused by coking. If the graphitization furnace is left to become severely clogged and its passageways are completely blocked before repairs are made, it will suffer serious damage, requiring more costly and large-scale repairs or replacements. Early detection of coking reduces maintenance costs and downtime, thereby improving production efficiency.

[0120] The control device of the aforementioned graphitization furnace coking determination system includes a processor and a memory. The acquisition unit and determination unit, among others, are stored as program units in the memory, and the processor executes these program units to achieve their respective functions. All of the above modules reside in the same processor; alternatively, the modules may be located in different processors in any combination.

[0121] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured. By adjusting the kernel parameters, the problem in existing technologies where it is impossible to determine whether coking has occurred inside the furnace when producing high-quality anthracite graphitized products can be solved.

[0122] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0123] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the control method of the graphitization furnace coking determination system.

[0124] This invention provides a processor for running a program, wherein the program executes the control method of the graphitization furnace coking determination system.

[0125] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the control method steps of a graphitization furnace coking determination system. The device described herein can be a server, PC, PAD, mobile phone, etc.

[0126] This application also provides a computer program product that, when executed on a data processing device, is adapted to perform the steps of a control method for initializing a system for determining coking in a graphitization furnace.

[0127] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0128] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0129] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0130] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0131] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0132] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0133] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0134] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0135] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0136] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0137] 1) The graphitization furnace coking determination system of this application is equipped with a detection device on the graphitization furnace to detect the gas concentration and temperature during the operation of the graphitization furnace. If coking occurs in the graphitization furnace, the gas concentration and temperature will increase accordingly. Therefore, the graphitization furnace can be automatically determined to be coking based on the gas concentration and temperature. Once coking occurs, it can be detected immediately, which can also avoid the accident of complete blockage of the graphitization furnace causing flame ejection.

[0138] 2) The control method of the graphitization furnace coking determination system of this application involves installing a detection device on the graphitization furnace to detect the gas concentration and temperature during the operation of the graphitization furnace. If coking occurs in the graphitization furnace, the gas concentration and temperature will increase accordingly. Therefore, the graphitization furnace can be automatically determined based on the gas concentration and temperature. Once coking occurs, it can be detected immediately, which can also avoid the accident of complete blockage of the graphitization furnace causing flame ejection.

[0139] 3) The control device of the graphitization furnace coking determination system of this application is equipped with a detection device on the graphitization furnace to detect the gas concentration and temperature during the operation of the graphitization furnace. If coking occurs in the graphitization furnace, the gas concentration and temperature will increase accordingly. Therefore, the graphitization furnace can be automatically determined to be coking based on the gas concentration and temperature. Once coking occurs, it can be detected immediately, which can also avoid the accident of complete blockage of the graphitization furnace causing flame ejection.

[0140] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A control method for a coking determination system in a graphitization furnace, characterized in that, The graphitization furnace coking determination system includes: a graphitization furnace for producing graphitized products; a detection device located on the graphitization furnace, the detection device being used to detect the operating information of the graphitization furnace, wherein the operating information includes gas concentration and temperature; and a processor communicatively connected to the detection device, the processor being used to determine whether coking will occur in the graphitization furnace based on the magnitude of the operating information, the method including: Obtain the operating information of the graphitization furnace, wherein the operating information includes gas concentration and temperature; The magnitude of the operating information determines whether coking will occur in the graphitization furnace; The method of determining whether coking will occur in the graphitization furnace based on the magnitude of the operational information includes: generating a first curve based on multiple gas concentrations obtained within a target duration, wherein the target duration includes multiple time points, and each time point corresponds to a gas concentration; determining whether there is a first abrupt change point in the first curve, wherein the first abrupt change point is a data point where the concentration difference between the gas concentration at time N and the gas concentration at time N-1 is greater than a first difference threshold; generating a second curve based on multiple temperatures obtained within the target duration, wherein each time point corresponds to a temperature; and determining whether there is a second abrupt change point in the second curve, wherein the second abrupt change point is the temperature at time N and the temperature at time N-1. The data points where the temperature difference is greater than the second difference threshold; if there is a first abrupt change point in the first curve and a second abrupt change point in the second curve, it is determined that the graphitization furnace will experience coking; if there is no first abrupt change point in the first curve and a second abrupt change point in the second curve, it is determined that the graphitization furnace will not experience coking; if there is a first abrupt change point in the first curve and no second abrupt change point in the second curve, it is determined that the graphitization furnace will not experience coking; if there is no first abrupt change point in the first curve and no second abrupt change point in the second curve, it is determined that the graphitization furnace will not experience coking.

2. The method according to claim 1, characterized in that, The detection device includes a concentration detection device and a temperature detection device. The concentration detection device is located at one end near the feeding port of the graphitization furnace, between the graphite electrode and the high-alumina brick insulation layer of the graphitization furnace, and is used to detect the gas concentration in the graphitization furnace. The temperature detection device is located at one end near the heating chamber of the graphitization furnace, and is used to detect the temperature of the graphitization furnace. The temperature detection device is located on the high-alumina brick and the carbon brick of the graphitization furnace, and acquires the operating information of the graphitization furnace, including: The gas concentration at the feed port of the graphitization furnace is obtained; The temperature at the heating chamber of the graphitization furnace is obtained.

3. The method according to claim 1, characterized in that, To determine whether coking will occur in the graphitization furnace based on the magnitude of the operating information, the following methods can also be used: Obtain a first rate of change of the gas concentration, wherein the first rate of change is the amount of change of the gas concentration within a target time period; Obtain a second rate of change of the temperature, wherein the second rate of change is the amount of temperature change within the target duration; If both the first rate of change and the second rate of change are greater than or equal to the preset concentration rate of change and the preset temperature rate of change, it is determined that the graphitization furnace will experience the coking phenomenon. If the first rate of change is less than the preset concentration rate of change and the second rate of change is greater than or equal to the preset temperature rate of change, it is determined that the coking phenomenon will not occur in the graphitization furnace. If both the first rate of change is greater than or equal to the preset concentration rate of change and the second rate of change is less than the preset temperature rate of change, it is determined that the coking phenomenon will not occur in the graphitization furnace. If the first rate of change is less than the preset concentration rate of change and the second rate of change is less than the preset temperature rate of change, it is determined that the coking phenomenon will not occur in the graphitization furnace.

4. A control device for a coking determination system in a graphitization furnace, characterized in that, The graphitization furnace coking determination system includes: a graphitization furnace for producing graphitized products; a detection device located on the graphitization furnace, the detection device being used to detect the operating information of the graphitization furnace, wherein the operating information includes gas concentration and temperature; a processor communicatively connected to the detection device, the processor being used to determine whether coking will occur in the graphitization furnace based on the magnitude of the operating information; and a control device including: The acquisition unit is used to acquire the operating information of the graphitization furnace, wherein the operating information includes gas concentration and temperature; The determining unit is used to determine whether coking will occur in the graphitization furnace based on the magnitude of the operating information. The determining unit includes a first generation module, a first determining module, a second generation module, a second determining module, a third determining module, a fourth determining module, a fifth determining module, and a sixth determining module. The first generation module generates a first curve based on multiple gas concentrations obtained within a target duration, wherein the target duration includes multiple time points, and each time point corresponds to a gas concentration. The first determining module determines whether the first curve contains a first abrupt change point, wherein the first abrupt change point is a data point where the concentration difference between the gas concentration at time N and the gas concentration at time N-1 is greater than a first difference threshold. The second generation module generates a second curve based on multiple temperatures obtained within the target duration, wherein each time point corresponds to a temperature. The second determining module determines whether the second curve contains a second abrupt change point, wherein the second abrupt change point is... The data point where the temperature difference between the temperature at time N and the temperature at time N-1 is greater than the second difference threshold; the third determining module is used to determine that the graphitization furnace will experience coking if there is a first abrupt change point in the first curve and a second abrupt change point in the second curve; the fourth determining module is used to determine that the graphitization furnace will not experience coking if there is no first abrupt change point in the first curve and a second abrupt change point in the second curve; the fifth determining module is used to determine that the graphitization furnace will not experience coking if there is a first abrupt change point in the first curve and no second abrupt change point in the second curve; the sixth determining module is used to determine that the graphitization furnace will not experience coking if there is no first abrupt change point in the first curve and no second abrupt change point in the second curve.

5. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the control method of the graphitization furnace coking determination system according to any one of claims 1 to 3.

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