Oxygen-enriched combustion steel rolling heating furnace control method and related equipment

Abstract

The invention discloses an oxygen-enriched combustion steel rolling heating furnace control method and related equipment, relates to the field of steel smelting, and mainly aims at solving the problem that a traditional oxygen-enriched combustion process still adopts a fixed oxygen enrichment degree parameter and is not flexible enough. The method comprises the steps that preset sections of a target plate blank are determined, and the preset sections are a preheating section and a soaking section of a heating furnace; and the control range of the oxygen enrichment degree of the preset section is adjusted based on the temperature curve of the target slab in the length direction of the intermediate slab and the RT2 actual temperature. The method is used for the steel rolling heating furnace control process of oxygen-enriched combustion.

Description

Technical Field

[0001] The present invention relates to the field of steel smelting, and in particular to a control method for an oxygen-enriched combustion steel rolling heating furnace and related equipment. Background Art

[0002] The steel rolling heating furnace is the core equipment in steel production. It ensures that the slab reaches a suitable thermodynamic state before rolling by precisely controlling the furnace temperature and combustion process. In recent years, oxygen-enriched combustion technology has gradually become an important direction for the optimization of steel rolling heating furnaces due to its significant energy-saving and emission reduction potential. Oxygen-enriched combustion improves fuel combustion efficiency, reduces flue gas generation, and enhances flame radiation heat transfer capacity by injecting high-purity oxygen into the combustion air. However, the traditional oxygen-enriched combustion process uses fixed oxygen enrichment parameters (such as the preheating section is uniformly set to 40%), which does not take into account the initial temperature, specification differences and dynamic heating requirements of different slabs. Summary of the Invention

[0003] In view of the above problems, the present invention provides a control method and related equipment for an oxygen-enriched combustion steel rolling heating furnace, the main purpose of which is to solve the problem that the traditional oxygen-enriched combustion process still uses fixed oxygen enrichment parameters and is not flexible enough.

[0004] To solve at least one of the above technical problems, in a first aspect, the present invention provides a method for controlling an oxygen-enriched combustion steel rolling heating furnace, the method comprising:

[0005] Determining a preset section of the target slab, wherein the preset section is a preheating section and a soaking section of the heating furnace;

[0006] The control range of the oxygen enrichment in the preset section is adjusted based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2.

[0007] Optionally, the above method further includes:

[0008] Acquiring surface temperature data of the target slab in the length direction of the intermediate slab based on an infrared temperature sensor to form the temperature curve;

[0009] The actual temperature of the target slab before entering the rolling mill is obtained based on the RT2 sensor.

[0010] Optionally, adjusting the control range of the oxygen enrichment in the preset section based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2 includes:

[0011] When the temperature curve shows that the target slab has a certain temperature section lower than the target range, increasing the oxygen enrichment of the corresponding area of the preheating section;

[0012] When the temperature curve shows that the target slab has a temperature section higher than the target range, the oxygen enrichment of the corresponding area of the preheating section is reduced.

[0013] Optionally, adjusting the control range of the oxygen enrichment in the preset section based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2 includes:

[0014] Determining a predicted temperature of the heating furnace model based on a preset radiation heat transfer coefficient;

[0015] When the actual temperature is lower than the predicted temperature, increasing the oxygen enrichment of the soaking section;

[0016] When the actual temperature is greater than the predicted temperature, the oxygen enrichment of the soaking section is reduced.

[0017] Optionally, the above method further includes:

[0018] When the detected surface temperature of the target slab entering the furnace is greater than 400°C, the oxygen enrichment in the preheating section is controlled at 35%-40%;

[0019] When the detected temperature of the target slab entering the furnace is less than 400° C., the oxygen enrichment of the preheating section is controlled at 40%-55%.

[0020] Optionally, the above method further includes:

[0021] The oxygen enrichment of the soaking section is controlled at 30%-35%.

[0022] Optionally, the preset section further includes a heating section, and the method further includes:

[0023] The oxygen enrichment of the heating section is controlled at 24%-26%.

[0024] In a second aspect, an embodiment of the present invention further provides a control device for an oxygen-enriched combustion steel rolling heating furnace, comprising:

[0025] a determination unit, configured to determine a preset section of the target slab, wherein the preset section is a preheating section and a soaking section of the heating furnace;

[0026] An adjusting unit is used to adjust the control range of the oxygen enrichment of the preset section based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2.

[0027] In order to achieve the above-mentioned purpose, according to the third aspect of the present invention, a computer-readable storage medium is provided, which includes a stored program, wherein when the above-mentioned program is executed by a processor, the steps of the above-mentioned oxygen-enriched combustion steel rolling heating furnace control method are implemented.

[0028] In order to achieve the above-mentioned purpose, according to the fourth aspect of the present invention, an electronic device is provided, comprising at least one processor and at least one memory connected to the processor; wherein the above-mentioned processor is used to call the program instructions in the above-mentioned memory to execute the steps of the above-mentioned oxygen-enriched combustion steel rolling heating furnace control method.

[0029] Through the above technical solution, the present invention provides an oxygen-enriched combustion steel rolling heating furnace control method and related equipment. For the problem that the traditional oxygen-enriched combustion process still uses fixed oxygen enrichment parameters and is not flexible enough, the present invention determines the preset section of the target slab, wherein the preset section is the preheating section and the soaking section of the heating furnace; based on the temperature curve of the target slab in the length direction of the intermediate slab and the actual temperature of RT2, the control range of the oxygen enrichment of the preset section is adjusted. In the above scheme, by collecting the temperature curve of the intermediate slab in the length direction and the RT2 feedback data in real time, the changes in the radiation heat exchange capacity of the furnace and the differences in the thermal state of the slab are accurately identified, and then the oxygen enrichment control range of the preheating section and the soaking section are dynamically adjusted. This scheme not only compensates for the deviation of the model parameters, but also optimizes the heat distribution through regional oxygen supply, thereby significantly suppressing oxidation and burning while improving the heating efficiency, and realizing the refined control of the high-strength steel heating process.

[0030] Correspondingly, the oxygen-enriched combustion steel rolling heating furnace control device, equipment and computer-readable storage medium provided in the embodiments of the present invention also have the above-mentioned technical effects.

[0031] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0033] Figure 1 A schematic flow chart of a method for controlling an oxygen-enriched combustion steel rolling heating furnace provided by an embodiment of the present invention is shown;

[0034] Figure 2 A schematic block diagram of the components of an oxygen-enriched combustion steel rolling heating furnace control device provided by an embodiment of the present invention is shown;

[0035] Figure 3A schematic block diagram of the composition of an oxygen-enriched combustion steel rolling heating furnace control electronic device provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0036] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0037] In order to solve the problem that the traditional oxygen-enriched combustion process still uses fixed oxygen enrichment parameters and is not flexible enough, the embodiment of the present invention provides a method for controlling an oxygen-enriched combustion steel rolling heating furnace, such as Figure 1 As shown, the method includes:

[0038] S101, determining a preset section of a target slab, wherein the preset section is a preheating section and a soaking section of a heating furnace;

[0039] Exemplarily, the preheating section is the initial heating area of the steel rolling heating furnace, located at the front end of the furnace, and is mainly responsible for gradually heating the cold or low-temperature steel billet to the base temperature; the soaking section is located at the end of the heating furnace, and is the last heating stage before the steel billet enters the rolling mill. This application takes into account that the preheating section and the soaking section are the core functional areas of the steel rolling heating furnace to achieve efficient and low-loss heating. Through the dynamic adaptation of oxygen-enriched combustion technology (such as zoned oxygen supply and real-time feedback), problems such as uneven temperature, increased oxidation and model inaccuracy in traditional processes can be effectively solved, providing technical support for the high-quality rolling of high-strength steel.

[0040] S102 : adjusting the control range of the oxygen enrichment of the preset section based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2 .

[0041] For example, the present application dynamically adjusts the oxygen enrichment (oxygen percentage) of the preheating section and the soaking section of the heating furnace based on the temperature distribution along the length of the intermediate billet (reflected by the temperature curve) and the actual temperature at the outlet of the soaking section (feedback by the RT2 sensor).

[0042] This solution avoids the localized excess or shortage of oxygen caused by fixed oxygen enrichment in traditional processes through dynamic adjustment. For example, at the entrance of the preheating section, excessively high fixed oxygen enrichment can lead to the rapid formation of an oxide layer (FeO) on the slab surface. Dynamic control, however, matches combustion intensity to the slab's initial temperature (e.g., a cold slab requires a higher oxygen enrichment), reducing ineffective oxidation reactions.

[0043] This application addresses the temperature calculation deviation problem caused by fixed model parameters in traditional processes through a real-time data-driven oxygen enrichment adjustment mechanism. Under oxygen-enriched combustion conditions, the concentrations of CO2 and H2O in the flue gas increase, enhancing the radiative heat transfer capacity. However, existing heating furnace models do not correct for this, resulting in model-predicted temperatures lower than actual values. By introducing the intermediate billet temperature curve and RT2 feedback data, this application enables the system to sense changes in the furnace's radiative heat transfer efficiency in real time and dynamically adjust the oxygen enrichment.

[0044] This technical solution, through real-time acquisition of the intermediate slab's longitudinal temperature profile and RT2 feedback data, accurately identifies changes in the furnace's radiant heat transfer capacity and differences in the slab's thermal state, allowing for dynamic adjustment of the oxygen enrichment control range in the preheating and soaking sections. This solution not only compensates for model parameter deviations but also optimizes heat distribution through regionalized oxygen supply, significantly reducing oxidation and burning while improving heating efficiency, enabling refined control of the high-strength steel heating process.

[0045] In one embodiment, the method further includes:

[0046] Acquiring surface temperature data of the target slab in the length direction of the intermediate slab based on an infrared temperature sensor to form the temperature curve;

[0047] The actual temperature of the target slab before entering the rolling mill is obtained based on the RT2 sensor.

[0048] For example, the intermediate billet temperature profile can identify temperature variations at the head and tail of a slab, or in localized areas. For example, if the tail temperature is low, the oxygen enrichment in the corresponding area of the preheating stage is increased to accelerate heating in that area. Conversely, if the head temperature is too high, the oxygen enrichment is reduced to suppress localized oxidation. This method uses differentiated oxygen supply to align heat distribution with the slab's heat capacity distribution (e.g., the tail's greater heat capacity requires more heat), thereby reducing inter-slab variations during rolling (thickness variations at different locations on the same slab).

[0049] Specifically, infrared temperature sensors (such as multi-point array probes) are arranged on the rolling line to collect surface temperature data of the intermediate billet in the length direction in real time and generate a continuous temperature curve; at the same time, RT2 radiation temperature sensors are installed at the outlet of the soaking section to directly measure the actual temperature of the slab before it enters the rolling mill.

[0050] The above solution, through precise temperature data acquisition, addresses the issues of delayed and locally distorted temperature monitoring in traditional processes. Infrared temperature sensors are densely deployed (e.g., one measurement point per meter) to capture microscopic temperature fluctuations along the length of the intermediate slab (e.g., localized cold or hot spots), whereas traditional single-point temperature measurement only reflects the overall average. This data provides refined input for dynamic adjustment of oxygen enrichment, preventing process loss due to undetected localized temperature anomalies. The RT2 sensor directly measures the actual slab temperature and compares it in real time with the predicted value from the heating furnace model, forming a closed-loop feedback loop. Traditional processes rely on offline spot checks or manual recording, resulting in long data update cycles and an inability to respond to dynamic furnace changes (e.g., fluctuations in fuel calorific value or slab positional deviations). Online monitoring ensures the timeliness of control commands, thereby improving process stability. The combination of infrared temperature measurement and RT2 radiation temperature measurement reduces the systematic error of a single sensor. For example, infrared temperature measurement is susceptible to flue gas interference, while the RT2 sensor is located at the exit of the soaking section, where environmental interference is minimal. Fusion of these two data improves the reliability of temperature feedback.

[0051] In one embodiment, adjusting the control range of the oxygen enrichment of the preset section based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2 includes:

[0052] When the temperature curve shows that the target slab has a certain temperature section lower than the target range, increasing the oxygen enrichment of the corresponding area of the preheating section;

[0053] When the temperature curve shows that the target slab has a temperature section higher than the target range, the oxygen enrichment of the corresponding area of the preheating section is reduced.

[0054] For example, this application dynamically increases or decreases the oxygen supply to the corresponding area of the preheating section based on local temperature deviations of the intermediate slab temperature curve (e.g., if the temperature of a certain section is below or above the target value). For example, if the temperature of the rear end of the slab is too low, the oxygen enrichment of the corresponding burner group at the rear end is increased (e.g., from 40% to 45%); if the temperature of the head end is too high, the oxygen enrichment of the head end area is reduced (e.g., from 40% to 35%).

[0055] Based on the above solution, regionalized oxygen enrichment control solves the problem of local over-compensation or under-compensation caused by "global adjustment" in traditional processes. In the preheating stage, the heat demand of different areas of the slab is related to its initial temperature. For example, cold slabs (furnace entry temperature <400°C) need to be heated quickly, but if the oxygen enrichment is only increased globally, it may lead to increased oxidation in already high-temperature areas (such as the head). Through regional adjustment, the oxygen supply is increased only in the low-temperature areas, which can enhance the combustion intensity in a targeted manner and avoid global energy waste.

[0056] This application also takes into account that in traditional processes, fixed oxygen enrichment can cause thermal stress in different regions of the slab due to differential heating rates (e.g., rapid heating at the head and slow heating at the tail). By matching local oxygen enrichment with heat demand, each section of the slab can be synchronized to the target temperature, reducing the risk of internal microcracks caused by uneven thermal expansion.

[0057] This application reduces the frequent start-up and shutdown or large adjustments of burners through regional control. For example, by adjusting the oxygen enrichment of burners in the low-temperature zone only, while the burners in the high-temperature zone maintain stable operation, it can reduce mechanical wear and thermal fatigue and extend the service life of the equipment.

[0058] In one embodiment, adjusting the control range of the oxygen enrichment of the preset section based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2 includes:

[0059] Determining a predicted temperature of the heating furnace model based on a preset radiation heat transfer coefficient;

[0060] When the actual temperature is lower than the predicted temperature, increasing the oxygen enrichment of the soaking section;

[0061] When the actual temperature is greater than the predicted temperature, the oxygen enrichment of the soaking section is reduced.

[0062] For example, when the RT2 feedback temperature is lower than the predicted value, it indicates that the model underestimates the actual radiation heat transfer capacity (due to not considering the impact of oxygen-enriched combustion). In this case, increasing the oxygen enrichment in the soaking section can enhance combustion intensity by increasing the oxygen supply, thereby improving the flue gas radiation capacity, thereby compensating for the model parameter error. The same principle applies in reverse. By comparing the temperature curve with the target range and the actual RT2 temperature with the model-predicted temperature, the oxygen supply in the preheating and soaking sections can be dynamically corrected to optimize the furnace temperature distribution.

[0063] Based on this solution, closed-loop corrections between the model and measured data address the control inaccuracy issues inherent in traditional processes caused by fixed model parameters. Oxygen-enriched combustion significantly alters flue gas composition (e.g., increases CO2 concentration) and enhances radiative heat transfer. However, traditional models employ a fixed radiative heat transfer coefficient, resulting in predicted temperatures lower than actual values. By comparing actual temperatures with the predicted temperature, the system identifies the direction of model deviation and adjusts the oxygen enrichment to indirectly correct the radiative heat transfer coefficient, bringing the model's calculated values closer to actual operating conditions.

[0064] When the actual temperature exceeds the predicted temperature, it indicates that the actual temperature has exceeded the process requirements, which may cause grain coarsening or surface oxidation. In this case, reducing the oxygen enrichment can reduce the oxygen supply, inhibit combustion intensity, and avoid the degradation of microstructure and properties caused by the slab staying at high temperature for too long.

[0065] In traditional processes, model parameters require regular manual calibration, making them incapable of adapting to dynamic operating conditions (such as changes in fuel composition). This method, through real-time feedback, enables the model to adapt to changes in the radiation characteristics of oxy-fuel combustion, reducing the frequency of manual intervention and enhancing the intelligence of the control system.

[0066] In one embodiment, the method further includes:

[0067] When the detected surface temperature of the target slab entering the furnace is greater than 400°C, the oxygen enrichment in the preheating section is controlled at 35%-40%;

[0068] When the detected temperature of the target slab entering the furnace is less than 400° C., the oxygen enrichment of the preheating section is controlled at 40%-55%.

[0069] For example, the oxygen enrichment in the preheating section is set differently according to the initial temperature of the slab: a lower oxygen enrichment (35%-40%) is used for high-temperature slabs (surface temperature > 400°C), and a higher oxygen enrichment (40%-55%) is used for low-temperature slabs (surface temperature < 400°C).

[0070] Based on the above solution, overmatching the oxygen enrichment with the initial thermal state of the slab resolves the energy waste and oxidation conflict during mixed heating of hot and cold slabs. Considering that low-temperature slabs require higher oxygen enrichment to accelerate the combustion reaction and shorten the preheating time, for example, an oxygen enrichment of 40%-55% can increase the flame temperature, enhance radiant heat transfer to the slab, and avoid excessive load in the subsequent heating stage due to insufficient preheating. However, a certain thickness of oxide layer (FeO) has already formed on the surface of the high-temperature slab. Continuing to use a high oxygen enrichment will intensify the oxidation reaction. Lowering the oxygen enrichment (35%-40%) can reduce the amount of oxygen contact with the slab surface, inhibiting the thickening of the oxide layer, while maintaining the necessary combustion intensity to avoid cooling.

[0071] Differentiated control avoids energy waste caused by a "one-size-fits-all" oxygen supply. For example, reducing the oxygen supply to high-temperature slabs can reduce fuel consumption (due to the additional oxygen cost required for oxygen-enriched combustion) and reduce metal loss caused by ineffective oxidation.

[0072] In one embodiment, the method further includes:

[0073] The oxygen enrichment of the soaking section is controlled at 30%-35%.

[0074] For example, the oxygen enrichment range of the soaking section is (30%-35%), which ensures the uniformity of the high-temperature environment in the soaking section by stabilizing the oxygen supply.

[0075] Based on the above solution, a narrow range of oxygen enrichment control eliminates the risk of temperature unevenness and overburning caused by oxygen fluctuations in the soaking section. The soaking section must maintain consistent slab temperature to meet rolling requirements. The 30%-35% oxygen enrichment range optimizes the oxygen-fuel ratio, stabilizing the combustion reaction within the efficient range. This avoids the drastic temperature fluctuations caused by excessive oxygen enrichment (>35%) or the incomplete combustion caused by low oxygen enrichment (<30%). This range has been experimentally verified to ensure combustion efficiency while preventing excess oxygen from reacting with the slab surface to form an excessively thick oxide layer (such as FE3O4). Furthermore, the stable combustion intensity prevents localized overheating (such as near the burner) and reduces the risk of grain coarsening. The 30%-35% oxygen enrichment range aligns the soaking section residence time with mill requirements. For example, if the oxygen enrichment is too low, the slab will need to soak for a longer time to reach the target temperature, impacting production schedules. This range, through precise temperature control, ensures that the slab is soaked within the set time, thereby improving production capacity.

[0076] In one embodiment, characterized in that the preset section further includes a heating section, and the method further includes:

[0077] The oxygen enrichment of the heating section is controlled at 24%-26%.

[0078] Exemplarily, the fixed oxygen enrichment range of the heating section (24%-26%) is suitable for the heating section using thermal storage combustion.

[0079] Based on the above solution, the problem of uneven oxygen distribution caused by frequent switching of burners in the thermal storage combustion mode is solved by fixing the oxygen enrichment range. The thermal storage burner needs to periodically switch the air / flue gas channel. If the oxygen enrichment fluctuates too much, it will cause uneven mixing of oxygen and air, causing unstable combustion. The fixed range of 24%-26% has been verified by experiments to maintain the stability of the mixed gas composition during the switching cycle and ensure consistent combustion efficiency. This range limits the oxygen concentration to avoid a sudden rise in flame temperature caused by excessive oxygen enrichment (>26%), thereby reducing thermal stress damage to the thermal storage body (such as ceramic honeycomb body) and extending its service life. Fixed oxygen enrichment keeps the flue gas components (such as CO2, H2O) produced by combustion stable, thereby enhancing the predictability of radiation heat exchange and providing a reliable basis for subsequent temperature control in the soaking section.

[0080] Furthermore, as a response to the above Figure 1 In order to realize the method shown in the figure, the embodiment of the present invention also provides a control device for an oxygen-enriched combustion steel rolling heating furnace, which is used to control the above Figure 1 This device embodiment corresponds to the aforementioned method embodiment. For ease of reading, this device embodiment will not describe the details of the aforementioned method embodiment one by one, but it should be clear that the device in this embodiment can implement all the contents of the aforementioned method embodiment. Figure 2 As shown, the device includes: a determination unit 21 and an adjustment unit 22, wherein

[0081] A determination unit 21 is configured to determine a preset section of a target slab, wherein the preset section is a preheating section and a soaking section of a heating furnace;

[0082] The adjusting unit 22 is configured to adjust the control range of the oxygen enrichment in the preset section based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2.

[0083] The processor includes a core, which retrieves the corresponding program unit from memory. One or more cores can be configured, and by adjusting core parameters, a control method for an oxy-fuel steel rolling mill heating furnace is implemented. This method addresses the inflexibility of conventional oxy-fuel combustion processes, which still rely on fixed oxygen enrichment parameters.

[0084] An embodiment of the present invention provides a computer-readable storage medium, which includes a stored program. When the program is executed by a processor, the control method of the steel rolling heating furnace with oxygen-enriched combustion is implemented.

[0085] An embodiment of the present invention provides a processor, which is used to run a program, wherein the program executes the oxygen-enriched combustion steel rolling heating furnace control method when running.

[0086] An embodiment of the present invention provides an electronic device, comprising at least one processor and at least one memory connected to the processor; wherein the processor is configured to call program instructions in the memory to execute the above-mentioned method for controlling an oxygen-enriched combustion steel rolling heating furnace.

[0087] An embodiment of the present invention provides an electronic device 30, such as Figure 3 As shown, the electronic device includes at least one processor 301, and at least one memory 302 and a bus 303 connected to the processor; wherein the processor 301 and the memory 302 communicate with each other through the bus 303; the processor 301 is used to call the program instructions in the memory to execute the above-mentioned oxygen-enriched combustion steel rolling heating furnace control method.

[0088] The intelligent electronic devices in this article can be PCs, PADs, mobile phones, etc.

[0089] The present application also provides a computer program product, which, when executed on a process management electronic device, is suitable for executing a program that initializes the steps of the above-mentioned oxygen-enriched combustion steel rolling heating furnace control method.

[0090] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0091] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0092] The present application 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 application. 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 produce 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.

[0093] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0094] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0095] The embodiment of the present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes the following Figure 1This corresponds to the flow of memory control in the embodiment.

[0096] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)).

[0097] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0098] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0099] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0100] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0101] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0102] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for controlling an oxygen-enriched combustion steel rolling heating furnace, characterized in that: include: Determining a preset section of the target slab, wherein the preset section is a preheating section and a soaking section of the heating furnace; The control range of the oxygen enrichment in the preset section is adjusted based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2.

2. The method according to claim 1, characterized in that Also includes: Acquiring surface temperature data of the target slab in the length direction of the intermediate slab based on an infrared temperature sensor to form the temperature curve; The actual temperature of the target slab before entering the rolling mill is obtained based on the RT2 sensor.

3. The method according to claim 2, characterized in that The step of adjusting the oxygen enrichment control range of the preset section based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2 includes: When the temperature curve shows that the target slab has a certain temperature section lower than the target range, increasing the oxygen enrichment of the corresponding area of the preheating section; When the temperature curve shows that the target slab has a temperature section higher than the target range, the oxygen enrichment of the corresponding area of the preheating section is reduced.

4. The method according to claim 2, characterized in that The step of adjusting the oxygen enrichment control range of the preset section based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2 includes: Determining a predicted temperature of the heating furnace model based on a preset radiation heat transfer coefficient; When the actual temperature is lower than the predicted temperature, increasing the oxygen enrichment of the soaking section; When the actual temperature is greater than the predicted temperature, the oxygen enrichment of the soaking section is reduced.

5. The method according to claim 1, wherein Also includes: When the detected surface temperature of the target slab entering the furnace is greater than 400°C, the oxygen enrichment in the preheating section is controlled at 35%-40%; When the detected temperature of the target slab entering the furnace is less than 400° C., the oxygen enrichment of the preheating section is controlled at 40%-55%.

6. The method according to claim 1, characterized in that Also includes: The oxygen enrichment of the soaking section is controlled at 30%-35%.

7. The method according to claim 1, characterized in that The preset section further includes a heating section, and the method further includes: The oxygen enrichment of the heating section is controlled at 24%-26%.

8. A control device for an oxygen-enriched combustion steel rolling heating furnace, characterized in that: Also includes: a determination unit, configured to determine a preset section of the target slab, wherein the preset section is a preheating section and a soaking section of the heating furnace; An adjusting unit is used to adjust the control range of the oxygen enrichment of the preset section based on the temperature curve of the target slab in the longitudinal direction of the intermediate slab and the actual temperature RT2.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the steps of the method for controlling an oxygen-enriched combustion steel rolling heating furnace according to any one of claims 1 to 7 are implemented.

10. An electronic device, characterized in that: The electronic device includes at least one processor and at least one memory connected to the processor; wherein the processor is used to call the program instructions in the memory to execute the steps of the oxygen-enriched combustion steel rolling heating furnace control method as described in any one of claims 1 to 7.

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