Converter blowing process stability control method and related equipment

Abstract

The invention discloses a converter blowing process stability control method and related equipment, and relates to the technical field of steelmaking, the method comprises the following steps: obtaining flue gas information, the flue gas information being a real-time detection result of a CO component in flue gas; constructing a flue gas deviation function based on the flue gas information; based on the reaction deviation coefficient of the flue gas deviation function, converter process parameters are adjusted, and the converter process parameters comprise the oxygen lance height and the bottom blowing stirring strength. Complex changes in the converter blowing process can be effectively handled, the slag overflowing and splashing proportion can be reduced, and the stability and safety of the converter blowing process are improved.

Description

Technical Field

[0001] This application relates to the technical field of steelmaking, and particularly relates to a control method for the stability of the converter blowing process and related equipment. Background Art

[0002] In the technical field of steelmaking, the stability of the converter blowing process is of crucial importance. During converter blowing, various elements in the molten iron undergo oxidation reactions, generating a large number of bubbles and new slag. The interaction among the slag, steel, and bubbles makes the process extremely complex. Once the control of the bubble generation amount and slag characteristics is improper, it is extremely easy to cause slag overflow and splashing phenomena, seriously affecting the stability of the converter blowing process, not only reducing production efficiency but also potentially bringing safety hazards.

[0003] To solve these problems, metallurgists have tried many methods, such as the sonar slag melting technology, which adjusts the blowing operation system through the slag feedback signal. However, due to its installation position being close to the slag, this technology is easily affected by the splashing slag, has a large maintenance difficulty, and its effect will be greatly reduced after being used for a period of time. Therefore, there is an urgent need for a control method for the stability of the converter blowing process to solve the above-mentioned problems. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further detailed in the Detailed Description section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] In a first aspect, this application provides a control method for the stability of the converter blowing process, including:

[0006] Obtain flue gas information, where the flue gas information is the result of real-time detection of the CO component in the flue gas;

[0007] Based on the flue gas information, construct a flue gas deviation function;

[0008] Based on the reaction deviation coefficient of the flue gas deviation function, adjust the converter process parameters, where the converter process parameters include the lance height and the bottom blowing stirring intensity.

[0009] In some embodiments, the flue gas deviation function is determined based on the following formula and is expressed as:

[0010]

[0011] where α is the reaction deviation coefficient, v t is the CO volume ratio calculated based on the flue gas information at time t, and v t-10 is the CO volume ratio calculated based on the flue gas information 10 seconds before time t.

[0012] In some embodiments, it further includes:

[0013] When the oxygen supply ratio of the converter is in the range of 35% to 80%, start calculating the flue gas deviation function, and calculate it once every first preset time, where the first preset time is 5 seconds.

[0014] In some embodiments, based on the reaction deviation coefficient of the flue gas deviation function, adjust the converter process parameters, including:

[0015] When the reaction deviation coefficient is greater than the first preset value and less than the second preset value, control the set parameters of the current lance height and the current bottom blowing stirring intensity to remain unchanged;

[0016] When the reaction deviation coefficient is less than or equal to the first preset value, control the current lance height to decrease by a preset height based on the preset lance height, and control the current bottom blowing stirring intensity to increase by a preset intensity based on the preset bottom blowing stirring intensity, where the total reduction amount of the preset height is less than or equal to the first preset range, and the total increase amount of the preset intensity is less than or equal to the second preset range;

[0017] When the reaction deviation coefficient is greater than or equal to the second preset value, control the current lance height to increase by a preset height based on the preset lance height, and control the current bottom blowing stirring intensity to decrease by a preset intensity based on the preset bottom blowing stirring intensity, where the total increase amount of the preset height is less than or equal to the first preset range, and the total reduction amount of the preset intensity is less than or equal to the second preset range.

[0018] In some embodiments, the flue gas information is obtained by a flue gas analyzer, where the flue gas analyzer is a mass spectrometer or a laser analyzer.

[0019] In some embodiments, the delay time of the flue gas information is less than or equal to the second preset time, where the delay time is the time required for the flue gas to be transported from the furnace mouth to the flue gas analyzer, and the second preset time is 25 seconds.

[0020] In some embodiments, the delay time is determined based on the following formula, expressed as:

[0021] t 延迟 = t2 - t1

[0022] Where, t 延迟 is the delay time of the flue gas information, t1 is the lance-changing moment, t2 is the changing moment, the lance-changing moment is the moment recorded when the lance height is adjusted at any moment during the stable blowing process of the converter, and the changing moment is the moment when the CO component is detected to change by the flue gas analyzer after the lance height is adjusted.

[0023] In a second aspect, the present application proposes a device for controlling the stability of a converter blowing process, comprising:

[0024] A flue gas information acquisition unit, configured to acquire flue gas information, wherein the flue gas information is a result of real-time detection of CO components in the flue gas;

[0025] A smoke deviation function construction unit, which constructs a smoke deviation function based on smoke information;

[0026] The converter process parameter adjustment unit adjusts the converter process parameters based on the reaction deviation coefficient of the flue gas deviation function, wherein the converter process parameters include oxygen lance height and bottom blowing stirring intensity.

[0027] In a third aspect, an electronic device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is configured to implement the steps of the method for controlling the stability of a converter blowing process according to any one of the first aspects when executing the computer program stored in the memory.

[0028] In a fourth aspect, the present application further proposes a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for controlling the stability of the converter blowing process according to any one of the first aspects.

[0029] In summary, this application achieves precise control of the converter blowing process by real-time monitoring of flue gas information and dynamically adjusting the converter process parameters based on the reaction deviation coefficient of the flue gas deviation function. By introducing CO component detection, reaction deviation coefficient calculation, and real-time feedback mechanisms, the oxygen lance height and bottom blowing stirring intensity can be automatically adjusted according to different deviation levels, thereby effectively improving the stability and production efficiency of the converter blowing process. This method has high real-time performance and responsiveness, can quickly adapt to changes in working conditions, reduces errors in human operation, and further improves the quality and yield of molten steel by optimizing the operating conditions of the converter. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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 description. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0031] Figure 1 A schematic flow chart of a method for controlling stability of a converter blowing process provided in an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the structure of a control device for the stability of a converter blowing process provided in an embodiment of the present application;

[0033] Figure 3 This is a schematic structural diagram of an electronic device for controlling the stability of the converter blowing process provided by an embodiment of the present application. Specific embodiments

[0034] Terms such as "first", "second", "third", "fourth", etc. (if any) in the specification, claims and the above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments described herein can be implemented in an order different from that shown or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices. The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0035] Please refer to Figure 1 , which is a schematic flowchart of a method for controlling the stability of the converter blowing process provided by an embodiment of the present application, and specifically may include:

[0036] S110. Obtain flue gas information, where the flue gas information is the result of real-time detection of the CO component in the flue gas;

[0037] Exemplarily, converter blowing is a complex and dynamic process, and the oxidation reactions of various elements in the molten iron cause the conditions in the furnace to change rapidly. To effectively control the stability of the blowing process, it is necessary to timely master the real-time situation of the reactions in the furnace. And as the product of the reactions in the furnace, the composition change of the flue gas can intuitively reflect the chemical reaction process in the furnace. Among them, the change in the content of the CO component is even more crucial because the generation amount of CO is closely related to the oxidation degree of the carbon element in the molten iron, and the oxidation reaction of carbon is one of the core reactions in the converter blowing process. By real-time detecting the CO component in the flue gas, it provides a basis for subsequent precise control.

[0038] S120. Based on the flue gas information, construct a flue gas deviation function;

[0039] Exemplarily, during the converter blowing process, the flue gas information, especially the concentration of the CO component, can reflect the oxygen supply situation in the furnace and the stability of the reaction process. In order to achieve real-time optimization and precise control of the converter blowing process, it is necessary to process the flue gas information and extract valuable features from it. This processing process is the key step in constructing the flue gas deviation function. The flue gas deviation function is based on the real-time obtained flue gas information and reflects the change trend and deviation degree of the reaction in the furnace by calculating the deviation of the flue gas CO concentration at the current moment from that in the past period of time.

[0040] The construction of the flue gas deviation function generally involves two main parts: one is to calculate the CO concentration at the current moment based on the flue gas information; the other is to compare the CO concentration at the current moment based on the historical data within a period of time (such as the CO concentration in the previous 10 seconds), so as to calculate the function value reflecting the reaction deviation. This deviation function can reflect the change situation of the oxygen supply in the converter and quantify the influence of this change on the process control. By constructing the deviation function, the effective monitoring of the reaction state in the furnace can be realized, and thus a basis can be provided for the subsequent adjustment of process parameters.

[0041] The main purpose of constructing the flue gas deviation function is to achieve precise control through the reaction deviation coefficient. The reaction deviation coefficient is the output value of the flue gas deviation function, which represents the gap between the current reaction state in the furnace and the ideal reaction state. Through this deviation coefficient, it is possible to evaluate in real time whether the reaction in the furnace is in a normal state and adjust the process parameters of the converter, such as the lance height and the bottom blowing stirring intensity, in a timely manner according to the degree of its deviation, so as to maintain the stability of the converter process and improve the steelmaking efficiency.

[0042] S130. Adjust the process parameters of the converter based on the reaction deviation coefficient of the flue gas deviation function, where the process parameters of the converter include the lance height and the bottom blowing stirring intensity.

[0043] Exemplarily, during the converter blowing process, the reaction deviation coefficient, as the output value of the flue gas deviation function, can accurately reflect the gap between the reaction state in the furnace and the preset ideal reaction state. The reaction deviation coefficient obtained by calculation can provide a scientific basis for adjusting the process parameters of the converter. The process parameters of the converter, such as the lance height and the bottom blowing stirring intensity, directly affect the oxygen supply and the stirring effect of the molten bath in the furnace, thus having an important impact on the reaction rate, temperature control and molten bath composition during the smelting process. Therefore, according to the value of the reaction deviation coefficient, adjusting these process parameters in real time can effectively ensure the stability of the reaction in the furnace and optimize the smelting process.

[0044] Specifically, when the value of the reaction deviation coefficient is within the preset range, the set values of the oxygen lance height and the bottom blowing stirring intensity can be kept unchanged to maintain the current reaction stability; while when the reaction deviation coefficient is lower or higher than the preset range, corresponding adjustments are needed to restore the reaction stability. For example, when the reaction deviation coefficient is less than or equal to the first preset value, it indicates that the oxygen supply in the furnace may be insufficient and the reaction rate is low. At this time, the reaction can be promoted by lowering the oxygen lance height and increasing the bottom blowing stirring intensity; when the reaction deviation coefficient is greater than or equal to the second preset value, it shows that the oxygen supply is excessive and the reaction rate is too fast. At this time, the oxygen lance height can be increased and the bottom blowing stirring intensity can be reduced to avoid excessive reaction. Through this dynamic adjustment based on the reaction deviation coefficient, the stability of the converter blowing process can be maintained, and production fluctuations or quality problems caused by process parameter imbalance can be avoided.

[0045] In summary, the present application constructs a flue gas deviation function by real-time detecting the CO component in the flue gas and accurately adjusts the converter process parameters according to its reaction deviation coefficient, which can effectively cope with the complex changes in the converter blowing process. This method can reduce the proportion of slag overflow and splashing, and improve the stability and safety of the converter blowing process. At the same time, key links such as flue gas information acquisition and delay time control are clearly specified, and with the cooperation of equipment such as mass spectrometers or laser analyzers, the efficient and accurate control of the converter blowing process is realized, improving production efficiency and product quality.

[0046] In some examples, the flue gas deviation function is determined based on the following formula, expressed as:

[0047]

[0048] where α is the reaction deviation coefficient, v t is the CO volume ratio obtained based on the flue gas information at time t, and v t-10 is the CO volume ratio obtained based on the flue gas information 10 seconds before time t.

[0049] Exemplarily, during the converter blowing process, the change in the flue gas composition is an intuitive manifestation of the complex chemical reactions in the furnace. As the key product of the oxidation of carbon elements in hot metal, the volume ratio of CO in the flue gas contains rich reaction information. Constructing a flue gas deviation function based on the real-time detection data of the CO component in the flue gas is because these data can truly and timely reflect the dynamic process of the reaction in the furnace. By analyzing the changes in the CO volume ratio at different times, the trend and direction of the reaction can be accurately insight, providing a reliable basis for subsequent precise control.

[0050] In this function, the CO volume ratio v t at time t and the CO volume ratio v t-10As a variable. This is because the change in the volume ratio of CO at different times can directly reflect the change in the rate of carbon oxidation reaction. For example, when the carbon oxidation reaction accelerates at a certain moment and the amount of CO generated increases, the volume ratio of CO detected at the subsequent moment will increase accordingly. Comparing two moments with an interval of 10 seconds can capture the changing trend of the reaction during this period. If v t With v t-10 A larger difference indicates that the reaction state changes dramatically; conversely, a smaller difference means that the reaction is relatively stable.

[0051] These two variables are incorporated into the function, and specific mathematical operations are performed to determine the reaction deviation coefficient α. The magnitude of α directly reflects the degree to which the current reaction state in the furnace deviates from the ideal stable state. When the α value is within a reasonable range, the reaction is stable and controllable. However, when the α value is outside this range, it indicates that the converter process parameters need to be adjusted to ensure the stability of the blowing process.

[0052] In some instances, this also includes:

[0053] When the converter oxygen supply ratio is in the range of 35% to 80%, the calculation of the flue gas deviation function is started and is calculated every first preset time, wherein the first preset time is 5 seconds.

[0054] For example, during the converter blowing process, the calculation of the flue gas deviation function is started when the oxygen supply ratio is in the range of 35% to 80%. The oxygen supply ratio in this range means that the oxidation reaction in the converter is in a relatively active and critical stage. Below 35% oxygen supply ratio, the reaction rate in the furnace is too slow, and the oxidation process of elements in the molten iron is limited. At this time, the change in the CO component in the flue gas is relatively unobvious, and it is difficult to accurately reflect the actual reaction state in the furnace through the flue gas deviation function. When the oxygen supply ratio is higher than 80%, the converter blowing is close to the end point. At this time, relying solely on the function calculation based on the flue gas information for regulation may not be able to accurately control the end point temperature and composition in a timely and effective manner. Therefore, starting the calculation within the oxygen supply ratio range of 35% to 80% can ensure that the function is constructed and analyzed based on a stable and representative reaction state.

[0055] It is set to calculate the flue gas deviation function every 5 seconds. The 5-second time interval here is not calculated in real time during the adjustment process, but means that after the current adjustment operation is completed, wait for 5 seconds before calculating the flue gas deviation function again. This means that after each adjustment of process parameters (such as lance height and bottom blowing stirring intensity), pause for 5 seconds to ensure that the effect of the previous adjustment has enough time to be reflected in the flue gas information. The purpose of this design is to avoid system instability caused by overly frequent calculation and adjustment. Adjusting the converter process parameters usually takes a certain amount of time to have an impact on the reaction process. Overly frequent adjustment may lead to overcorrection of the reaction and cause process instability. By setting a 5-second time interval, it can be ensured that each adjustment has sufficient time to respond, thus achieving more stable and precise process control. This design enables the system to more effectively feedback the adjustment effect, avoid unnecessary interference, and thereby improve the stability and efficiency of the converter blowing process.

[0056] In some instances, based on the reaction deviation coefficient of the flue gas deviation function, adjust the converter process parameters, including:

[0057] When the reaction deviation coefficient is greater than the first preset value and less than the second preset value, control the set parameters of the current lance height and the current bottom blowing stirring intensity to remain unchanged;

[0058] When the reaction deviation coefficient is less than or equal to the first preset value, control the current lance height to decrease by a preset height based on the preset lance height, and control the current bottom blowing stirring intensity to increase by a preset intensity based on the preset bottom blowing stirring intensity, where the total reduction amount of the preset height is less than or equal to the first preset range, and the total increase amount of the preset intensity is less than or equal to the second preset range;

[0059] When the reaction deviation coefficient is greater than or equal to the second preset value, control the current lance height to increase by a preset height based on the preset lance height, and control the current bottom blowing stirring intensity to decrease by a preset intensity based on the preset bottom blowing stirring intensity, where the total increase amount of the preset height is less than or equal to the first preset range, and the total reduction amount of the preset intensity is less than or equal to the second preset range.

[0060] Exemplarily, during the converter blowing process, the reaction deviation coefficient α is a key indicator for judging the reaction state in the furnace. When α is between the first preset value and the second preset value, this indicates that elements such as the chemical reaction rate, mass transfer, and energy distribution in the furnace are in a relatively balanced state. At this time, the reaction conditions created by the current lance height and bottom blowing stirring intensity exactly meet the requirements for the stable progress of the converter blowing. Continuing to maintain these set parameters can enable the reaction in the furnace to proceed smoothly, avoid fluctuations caused by unnecessary parameter adjustments, and thus ensure the stability and continuity of the converter blowing process.

[0061] If α is less than or equal to the first preset value, it means that the reaction in the furnace is relatively slow. From the perspective of chemical reaction kinetics, at this time, the contact efficiency between oxygen and molten iron is not high, and the oxidation reactions of elements such as carbon cannot proceed sufficiently. By reducing the height of the oxygen lance, oxygen can act on the molten iron at a closer distance, increasing the reaction area between oxygen and molten iron, and thus accelerating the oxidation reaction rate. At the same time, increasing the intensity of bottom blowing stirring can strengthen the mixing effect between the molten steel and the slag, promote mass transfer and energy transfer, and further improve the overall reaction rate. Limiting the total reduction amount of the preset height and the total increase amount of the preset intensity to be less than or equal to the first preset range and the second preset range respectively is to prevent excessive adjustment. Excessive reduction of the oxygen lance height or excessive increase of the bottom blowing stirring intensity may cause the reaction to be too intense, triggering unsafe factors such as splashing, and instead destroying the stability of converter blowing.

[0062] When α is greater than or equal to the second preset value, it indicates that the reaction in the furnace is too intense. In this case, the large amount of heat and gas generated by the reaction may cause the pressure in the furnace to be unbalanced, increasing the risks of slag overflow and splashing. Increasing the height of the oxygen lance can make the oxygen jet act on the molten iron in a wider space, reducing the local reaction intensity and making the reaction more uniform and gentle. Reducing the intensity of bottom blowing stirring can reduce the violent agitation between the molten steel and the slag and lower the reaction rate. Similarly, limiting the total increase amount of the preset height and the total reduction amount of the preset intensity aims to ensure the stability of the system during the adjustment process. While effectively controlling the intensity of the reaction, it avoids triggering new unstable factors due to excessive adjustment amplitude, thus ensuring that the converter blowing process always operates in a safe, stable, and efficient state.

[0063] It should be noted that in the embodiments of the present application, the first preset value is -7%, the second preset value is 7%, the preset oxygen lance height is 2.0 m, the oxygen lance height range is 1.6 m to 2.4 m, the preset height is 5 cm, and the preset bottom blowing stirring intensity is 600 Nm 3 , the preset intensity is 5%, the first preset range is 30 cm, and the second preset range is 30%.

[0064] In some examples, the flue gas information is obtained by a flue gas analyzer, where the flue gas analyzer is a mass spectrometer or a laser analyzer for real-time detection of the CO component in the flue gas.

[0065] For example, in the control system for the stability of the converter blowing process, it is crucial to obtain accurate and real-time flue gas information, and the flue gas analyzer plays a core role here. As a commonly used detection equipment, the working principle of the mass spectrometer is based on electromagnetic properties. When the flue gas is introduced into the mass spectrometer, the gas molecules in it will first be ionized and obtain a certain amount of kinetic energy under the action of the electric field. Subsequently, the ion beam enters the magnetic field, and because ions with different mass-to-charge ratios are subjected to different Lorentz forces in the magnetic field, they will move along different trajectories. By accurately measuring the motion trajectory of the ions and the time they arrive at the detector, the mass spectrometer can separate and identify ions with different mass-to-charge ratios. For CO molecular ions, the mass spectrometer can accurately determine their content ratio in the flue gas, and with its fast data acquisition and analysis capabilities, it can realize real-time detection of CO components in the flue gas, providing data support for the subsequent construction of the flue gas deviation function and judgment of the reaction state in the furnace.

[0066] Laser analyzers use the interaction between lasers and gas molecules to detect CO components. When laser light of a specific wavelength passes through flue gas, CO molecules produce characteristic absorption of the laser light of that wavelength. According to the Lambert-Beer law, the degree of attenuation of laser intensity is related to the concentration of CO molecules and the optical path length. By emitting laser light of a specific wavelength and accurately measuring the change in laser intensity after it passes through the flue gas, the laser analyzer can calculate the concentration of CO in the flue gas. This detection method has extremely high sensitivity and response speed, and can quickly capture tiny changes in the CO component of the flue gas. During the converter blowing process, the reaction within the furnace changes rapidly. The real-time detection function of the laser analyzer ensures timely acquisition of dynamic information on the CO component, allowing operators to adjust the converter process parameters in a timely manner based on the latest flue gas data to maintain the stability of the blowing process.

[0067] Mass spectrometers or laser analyzers are chosen to obtain flue gas information primarily because they offer the ability to accurately detect CO components in real time. In the complex and dynamic process of converter blowing, only these advanced detection devices can provide timely insight into the changing state of reactions within the furnace. Real-time monitoring of CO components in flue gas provides an accurate data foundation for calculating the reaction deviation coefficient based on the flue gas deviation function. This, in turn, provides a scientific basis for adjusting converter process parameters such as oxygen lance height and bottom blowing agitation intensity, effectively ensuring a stable and efficient converter blowing process.

[0068] It should be noted that a 210t converter is used in the embodiment of the present application, and the flue gas analyzer is a mass spectrometer, which is installed at a position 17 meters away from the flue gas duct at the furnace mouth.

[0069] In some instances, the delay time of the flue gas information is less than or equal to a second preset time, where the delay time is the time required for the flue gas to be transported from the furnace mouth to the flue gas analyzer, and the second preset time is 25 seconds.

[0070] Exemplarily, the delay time of the flue gas information is required to be less than or equal to the second preset time, and this time limit is crucial for the real-time adjustment of the converter blowing process. Specifically, the delay time refers to the time required for the flue gas to reach the flue gas analyzer and be detected in real time after being discharged from the furnace mouth. This time interval is determined by the physical characteristics during the flue gas flow, transmission, and detection processes. To ensure that the feedback signal can promptly reflect the actual situation inside the furnace, the delay time must be controlled within a certain range to reduce the error caused by the delay.

[0071] In an embodiment, the second preset time is set to 25 seconds, which means that the transmission time of the flue gas from the furnace mouth to the flue gas analyzer cannot exceed 25 seconds. At this time, the flue gas analyzer can obtain accurate CO component data within a short time, and this data can reflect the real-time reaction state inside the furnace. Controlling the setting of the delay time is to ensure that when adjusting the converter process parameters, the feedback information is timely and accurate, avoiding over-adjustment or response lag caused by the delay, and thus affecting the stability and production efficiency of the blowing process.

[0072] In some instances, the delay time is determined based on the following formula, expressed as:

[0073] t 延迟 = t2 - t1

[0074] where, t 延迟 is the delay time of the flue gas information, t1 is the moment of changing the lance, t2 is the moment of change. The moment of changing the lance is the moment recorded when adjusting the height of the oxygen lance at any moment during the stable blowing process of the converter, and the moment of change is the moment when the flue gas analyzer detects a change in the CO component after adjusting the height of the oxygen lance.

[0075] Exemplarily, when the converter is in a stable blowing state, the chemical reaction inside the furnace maintains a relatively balanced and regular process, and the flue gas composition generated at this time is also relatively stable. Select a certain moment in the stable state and record it as t1, and then immediately adjust the height of the oxygen lance. The sudden change in the height of the oxygen lance will quickly change the reaction conditions of oxygen and hot metal inside the furnace, thereby causing significant changes in the chemical reaction rate and reaction products inside the furnace, and these changes will be directly reflected in the composition of the flue gas. When the flue gas analyzer detects a significant change in the CO component, record this moment as t2. It can be seen that the time difference between the moment of changing the lance t1 and the moment when the flue gas analyzer detects a significant change in the CO component t2 is t2 - t1, which exactly represents the delay time t between the reaction inside the furnace and the transmission of the flue gas information to the analyzer. 延迟 .

[0076] It should be noted that in the embodiments of the present application, when the stable state is that α is between the first preset value and the second preset value, this indicates that elements such as the chemical reaction rate, mass transfer, and energy distribution in the furnace are in a relatively balanced state; adjusting the height of the oxygen lance means raising the height of the oxygen lance by a certain height, which can be set to 20 cm to 50 cm, preferably 50 cm.

[0077] Please refer to Figure 2 , which is a schematic structural diagram of a control device for the stability of the converter blowing process provided by the embodiments of the present application, including:

[0078] A flue gas information acquisition unit 21, configured to acquire flue gas information, where the flue gas information is the result of real-time detection of the CO component in the flue gas;

[0079] A flue gas deviation function construction unit 22, which constructs a flue gas deviation function based on the flue gas information;

[0080] A converter process parameter adjustment unit 23, which adjusts the converter process parameters based on the reaction deviation coefficient of the flue gas deviation function, where the converter process parameters include the height of the oxygen lance and the bottom blowing stirring intensity.

[0081] Please refer to Figure 3 , the embodiments of the present application also provide an electronic device 300, including a memory 310, a processor 320, and a computer program 311 stored on the memory 310 and executable on the processor. When the processor 320 executes the computer program 311, it implements the steps of any method of the control device for the stability of the converter blowing process.

[0082] Since the electronic device introduced in this embodiment is the device used to implement a control device for the stability of the converter blowing process in the embodiments of the present application, based on the method introduced in the embodiments of the present application, those skilled in the art can understand the specific implementation manners and various variations of the electronic device in this embodiment. Therefore, the specific implementation of how this electronic device implements the method in the embodiments of the present application will not be described in detail here. As long as the device used by those skilled in the art to implement the method in the embodiments of the present application belongs to the scope protected by the present application.

[0083] In the specific implementation process, when the computer program 311 is executed by the processor, it can implement any implementation manner in the corresponding embodiment of the first aspect.

[0084] It should be noted that in the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0085] Those skilled in the art should understand that the embodiments of the present application may provide a method, a system or a computer program product. Therefore, the present application may take the form of a completely hardware embodiment, a completely software embodiment or an embodiment combining software and hardware aspects. Moreover, the present application may take the form of a computer program product implemented on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.

[0086] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the flows and / or blocks in the flowchart and / or block diagram can also be implemented. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded computer or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for realizing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0087] These computer program instructions can 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 generate a manufactured article including an instruction device, and the instruction device realizes the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0088] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide steps for realizing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0089] The embodiments of the present application also provide a computer program product, which includes computer software instructions. When the computer software instructions run on a processing device, the processing device is caused to execute Figure 1 the process of a control method for the stability of the converter blowing process in a corresponding embodiment.

[0090] A computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or data center that includes one or more integrated available media. The available medium may be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0091] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0092] In several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other may be indirect couplings or communication connections through some interfaces, devices, or units, and may be in electrical, mechanical, or other forms.

[0093] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0094] In addition, in each embodiment of the present application, each functional unit may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of a software functional unit.

[0095] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, may be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0096] 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present application.

[0097] Although the preferred embodiments of this specification have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0098] Obviously, those skilled in the art can make various changes and deformations to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and deformations of this specification fall within the scope of the claims of this specification and their equivalent technologies, this specification is also intended to include these modifications and deformations.

Claims

1. A control method for the stability of the converter blowing process, characterized in that, The method comprises: Acquiring flue gas information, wherein the flue gas information is a result of real-time detection of CO components in the flue gas; constructing a smoke deviation function based on the smoke information; Based on the reaction deviation coefficient of the flue gas deviation function, the converter process parameters are adjusted, wherein the converter process parameters include oxygen lance height and bottom blowing stirring intensity.

2. The method according to claim 1, characterized in that: The flue gas deviation function is determined based on the following formula, which is expressed as: Where α is the response bias coefficient, v t is the CO volume ratio calculated based on the flue gas information at time t, v t-10 is the CO volume ratio calculated based on the flue gas information in the 10 seconds before time t.

3. The method according to claim 2, wherein Also includes: When the converter oxygen supply ratio is in the range of 35% to 80%, the calculation of the flue gas deviation function is started and is calculated once every first preset time, wherein the first preset time is 5 seconds.

4. The method according to claim 1, characterized in that: The adjusting of converter process parameters based on the reaction deviation coefficient of the flue gas deviation function includes: When the reaction deviation coefficient is greater than the first preset value and less than the second preset value, the setting parameters of the current oxygen lance height and the current bottom blowing stirring intensity are controlled to remain unchanged; and / or, When the reaction deviation coefficient is less than or equal to the first preset value, the current oxygen lance height is controlled to be lowered by a preset height based on the preset oxygen lance height, and the current bottom blowing stirring intensity is controlled to be increased by a preset intensity based on the preset bottom blowing stirring intensity, wherein the total amount of the reduction in the preset height is less than or equal to the first preset range, and the total amount of the increase in the preset intensity is less than or equal to the second preset range; and / or, When the reaction deviation coefficient is greater than or equal to the second preset value, the current oxygen lance height is controlled to increase the preset height based on the preset oxygen lance height, and the current bottom blowing stirring intensity is controlled to reduce the preset intensity based on the preset bottom blowing stirring intensity, wherein the total amount of increase in the preset height is less than or equal to the first preset range, and the total amount of decrease in the preset intensity is less than or equal to the second preset range.

5. The method according to claim 1, characterized in that, The flue gas information is obtained by a flue gas analyzer, wherein the flue gas analyzer is a mass spectrometer or a laser analyzer.

6. The method according to claim 1, wherein The delay time of the flue gas information is less than or equal to a second preset time, wherein the delay time is the time required for the flue gas to be transported from the furnace port to the flue gas analyzer, and the second preset time is 25 seconds.

7. The method according to claim 6, wherein The delay time is determined based on the following formula, which is expressed as: t 延迟 =t2-t1 Among them, t 延迟 is the delay time of the flue gas information, t1 is the lance change time, and t2 is the change time. The lance change time is the time recorded when the oxygen lance height is adjusted at any time during the stable blowing process of the converter. The change time is the time when the flue gas analyzer detects a change in CO component after the oxygen lance height is adjusted.

8. A control device for the stability of the converter blowing process, characterized in that, include: A flue gas information acquisition unit, configured to acquire flue gas information, wherein the flue gas information is a result of real-time detection of CO components in the flue gas; a smoke deviation function construction unit, which constructs a smoke deviation function based on the smoke information; The converter process parameter adjustment unit adjusts the converter process parameters based on the reaction deviation coefficient of the flue gas deviation function, wherein the converter process parameters include oxygen lance height and bottom blowing stirring intensity.

9. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is configured to implement the steps of the method for controlling the stability of a converter blowing process according to any one of claims 1 to 7 when executing the computer program stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for controlling the stability of the converter blowing process according to any one of claims 1 to 7 is implemented.

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