Blast furnace detonation prediction method, device, equipment and medium

Abstract

The invention discloses a blast furnace knock prediction method and device, equipment and a medium. The embodiment of the invention is applied to a blast furnace which is still in a production process after a cooling wall is damaged. Monitoring various target parameters of the blast furnace; the multiple target parameters at least comprise the temperature of molten iron at a tap hole closest to the damaged cooling wall, the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located, the air pressure value in the blast furnace and the content of hydrogen in coal gas in the blast furnace; determining the parameter variation of each target parameter; if the variable quantity of each parameter reaches the corresponding threshold condition, an early warning signal is output, and the early warning signal is used for prompting that the blast furnace has the knocking risk. By monitoring multiple target parameters in real time and determining whether the target parameters meet the corresponding threshold conditions or not, whether the blast furnace still in the production process has a high knocking risk or not after the cooling wall is damaged can be effectively predicted and pre-warned, and therefore production safety in the operation process of the blast furnace is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace ironmaking, and in particular to a blast furnace explosion prediction method, device, equipment and medium. Background Art

[0002] The blast furnace is the core equipment of the ironmaking industry. The high temperature and high pressure environment inside it promotes the chemical reaction between iron ore and reducing agent to separate metallic iron. In order to protect the blast furnace shell from high temperature damage, the cooling wall is a key component, usually made of copper or cast iron, and arranged in key parts of the blast furnace, such as the belly, waist and lower part of the furnace body, to maintain the stability of the furnace body and extend its service life.

[0003] The cooling wall may be damaged due to various reasons during the operation of the blast furnace. Since the blast furnace is usually in continuous production for 24 hours, stopping the furnace to replace the cooling wall will lead to production interruption, affecting output and economic benefits. When the cooling wall is damaged, its cooling effect is weakened, causing the furnace shell and lining to be directly exposed to the high temperature environment, which is prone to local overheating, and the pressure in the furnace increases sharply, thus causing explosion, which brings great safety hazards to the production process.

[0004] In the related art, it is impossible to predict the explosion of a blast furnace that is still in production after the cooling wall is damaged, resulting in safety hazards. Therefore, how to predict the risk of explosion of a blast furnace that is still in production after the cooling wall is damaged is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The embodiments of the present application provide a blast furnace detonation prediction method, device, equipment and medium, which solves the technical problem that in the prior art it is impossible to predict detonation in a blast furnace that is still in the production process after the cooling wall is damaged, resulting in safety hazards, and achieves the technical effect of predicting the risk of detonation in a blast furnace that is still in the production process after the cooling wall is damaged.

[0006] In a first aspect, the present application provides a method for predicting blast furnace explosion, wherein the blast furnace refers to a blast furnace that is still in production after the cooling wall is damaged, and the method comprises:

[0007] Monitoring multiple target parameters of the blast furnace; the multiple target parameters include at least: the molten iron temperature at the tap hole closest to the damaged cooling wall, the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located, the wind pressure value in the blast furnace, and the hydrogen content in the coal gas in the blast furnace;

[0008] Determine the parameter change amount for each target parameter;

[0009] If the change in each parameter reaches the corresponding threshold condition, an early warning signal is output, which is used to indicate that there is a risk of explosion in the blast furnace.

[0010] In some embodiments of the present application, based on the above scheme, if each parameter change reaches the corresponding threshold condition, an early warning signal is output, including:

[0011] When the parameter change amount corresponding to the molten iron temperature at the tap hole closest to the damaged cooling stave reaches the corresponding first threshold condition, it is determined whether the parameter change amount corresponding to the surface temperature of the cooling stave below the horizontal plane where the damaged cooling stave is located reaches the corresponding second threshold condition;

[0012] When the parameter change amount corresponding to the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located reaches the corresponding second threshold condition, it is determined whether the parameter change amount corresponding to the wind pressure value in the blast furnace reaches the corresponding third threshold condition;

[0013] When the parameter change amount corresponding to the wind pressure value in the blast furnace reaches the corresponding third threshold condition, it is determined whether the parameter change amount corresponding to the hydrogen content in the coal gas in the blast furnace reaches the corresponding fourth threshold condition;

[0014] When the parameter change corresponding to the hydrogen content in the coal gas in the blast furnace reaches the corresponding fourth threshold condition, an early warning signal is output.

[0015] In some embodiments of the present application, based on the aforementioned solution, the first threshold condition is that the temperature change corresponding to the temperature drop stage of the molten iron at the tap hole closest to the damaged cooling wall reaches 10°C or more;

[0016] The second threshold condition is that the temperature change corresponding to the temperature drop stage of the cooling wall surface below the horizontal plane where the damaged cooling wall is located reaches 5°C or more;

[0017] The third threshold condition is that the fluctuation rate of the wind pressure value in the blast furnace reaches 0.05Mpa / min or above;

[0018] The fourth threshold condition is that the rate of increase of the hydrogen content in the coal gas in the blast furnace reaches 3% / min or above.

[0019] In some embodiments of the present application, based on the above scheme, if each parameter change reaches the corresponding threshold condition, an early warning signal is output, including:

[0020] If the change in each parameter reaches the corresponding threshold condition within the preset time span, an early warning signal is output.

[0021] In some embodiments of the present application, based on the above scheme, the method for determining the threshold condition includes:

[0022] Acquire historical data of the blast furnace, the historical data including the values ​​of each target parameter when the blast furnace explodes and the values ​​of each target parameter when the blast furnace is in a normal production process after the cooling wall is damaged;

[0023] Based on historical data, determine the threshold conditions corresponding to each target parameter.

[0024] In some embodiments of the present application, based on the above scheme, multiple target parameters of the blast furnace are monitored, including:

[0025] Determine the target location of damaged cooling staves in the blast furnace;

[0026] Determine the target monitoring area according to the target position; the target monitoring area includes the tap hole closest to the target position in the blast furnace and the cooling wall area below the horizontal plane where the target position is located;

[0027] Monitor target parameters of the target monitoring area.

[0028] In some embodiments of the present application, based on the aforementioned scheme, if the target parameter is the molten iron temperature at the tap hole closest to the damaged cooling wall, or the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located, the corresponding parameter change is the temperature change corresponding to the stage of continuous temperature drop;

[0029] If the target parameter is the wind pressure value in the blast furnace, the corresponding parameter change is the pressure fluctuation rate;

[0030] If the target parameter is the hydrogen content in the coal gas in the blast furnace, the corresponding parameter change is the rate of increase of the content.

[0031] In a second aspect, the present application provides a blast furnace explosion prediction device, comprising:

[0032] An acquisition module is used to monitor multiple target parameters of the blast furnace; the multiple target parameters include at least: the molten iron temperature at the tap hole closest to the damaged cooling wall, the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located, the wind pressure value in the blast furnace, and the hydrogen content in the coal gas in the blast furnace;

[0033] A first determination module is used to determine the parameter change amount of each target parameter;

[0034] The first calculation module is used to output a warning signal if each parameter change reaches its corresponding threshold condition, and the warning signal is used to indicate that there is a risk of explosion in the blast furnace.

[0035] In some embodiments of the present application, based on the above solution, the device further includes a second calculation module, which is used to:

[0036] When the parameter change amount corresponding to the molten iron temperature at the tap hole closest to the damaged cooling stave reaches the corresponding first threshold condition, it is determined whether the parameter change amount corresponding to the surface temperature of the cooling stave below the horizontal plane where the damaged cooling stave is located reaches the corresponding second threshold condition;

[0037] When the parameter change amount corresponding to the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located reaches the corresponding second threshold condition, it is determined whether the parameter change amount corresponding to the wind pressure value in the blast furnace reaches the corresponding third threshold condition;

[0038] When the parameter change amount corresponding to the wind pressure value in the blast furnace reaches the corresponding third threshold condition, it is determined whether the parameter change amount corresponding to the hydrogen content in the coal gas in the blast furnace reaches the corresponding fourth threshold condition;

[0039] When the parameter change corresponding to the hydrogen content in the coal gas in the blast furnace reaches the corresponding fourth threshold condition, an early warning signal is output.

[0040] In some embodiments of the present application, based on the aforementioned scheme, the device also includes a third calculation module, which is used to output a warning signal if each parameter change reaches its corresponding threshold condition within a preset time span.

[0041] In some embodiments of the present application, based on the above solution, the device further includes a second determining module, which is used to:

[0042] Acquire historical data of the blast furnace, the historical data including the values ​​of each target parameter when the blast furnace explodes and the values ​​of each target parameter when the blast furnace is in a normal production process after the cooling wall is damaged;

[0043] Based on historical data, determine the threshold conditions corresponding to each target parameter.

[0044] In some embodiments of the present application, based on the foregoing solution, the apparatus further includes a third determining module, which is configured to:

[0045] Determine the target location of damaged cooling staves in the blast furnace;

[0046] Determine the target monitoring area according to the target position; the target monitoring area includes the tap hole closest to the target position in the blast furnace and the cooling wall area below the horizontal plane where the target position is located;

[0047] Monitor target parameters of the target monitoring area.

[0048] In a third aspect, the present application provides an electronic device, including:

[0049] processor;

[0050] a memory for storing processor-executable instructions;

[0051] The processor is configured to execute to implement a blast furnace detonation prediction method as provided in the first aspect.

[0052] In a fourth aspect, the present application provides a non-temporary computer-readable storage medium. When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to implement a blast furnace detonation prediction method as provided in the first aspect.

[0053] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0054] The embodiment of the present application is applied to a blast furnace that is still in the production process after the cooling wall is damaged; monitors multiple target parameters of the blast furnace; determines the parameter change of each target parameter; the multiple target parameters include: the molten iron temperature at the tap hole closest to the damaged cooling wall, the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located, the wind pressure value in the blast furnace, and the hydrogen content in the coal gas in the blast furnace; if each parameter change reaches the corresponding threshold conditions, an early warning signal is output, and the early warning signal is used to prompt that the blast furnace has a risk of explosion. It can be seen that the embodiment of the present application monitors multiple target parameters in real time and determines whether various target parameters meet the corresponding threshold conditions, and then determines whether the blast furnace that is still in the production process after the cooling wall is damaged has a high risk of explosion, that is, it can effectively predict and warn of possible explosions, so that the blast furnace that is still in the production process after the cooling wall is damaged can take corresponding preventive measures before the explosion occurs, improve the production safety during the operation of the blast furnace, and ensure the safety and stability of the blast furnace operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0056] Figure 1 A schematic diagram of a flow chart of a blast furnace detonation prediction method provided in an embodiment of the present application;

[0057] Figure 2 A schematic diagram of the structure of a blast furnace detonation prediction device provided in an embodiment of the present application;

[0058] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0059] Figure 4 A schematic flow chart of a blast furnace detonation prediction method provided for a specific embodiment of the present application. DETAILED DESCRIPTION

[0060] The embodiment of the present application solves the technical problem of the failure to predict the occurrence of blast furnace detonation in the prior art by providing a method for predicting blast furnace detonation.

[0061] The technical solution of the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0062] The embodiment of the present application is applied to a blast furnace that is still in the production process after the cooling wall is damaged; monitor multiple target parameters of the blast furnace; multiple target parameters include: the molten iron temperature at the tap hole closest to the damaged cooling wall, the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located, the wind pressure value in the blast furnace, and the content of hydrogen in the coal gas in the blast furnace; determine the parameter change of each target parameter; if each parameter change reaches the corresponding threshold conditions, an early warning signal is output, and the early warning signal is used to prompt that the blast furnace has a risk of explosion. By real-time monitoring of multiple target parameters and determining whether various target parameters meet the corresponding threshold conditions, it is determined whether the blast furnace that is still in the production process after the cooling wall is damaged has a higher risk of explosion, that is, it can effectively predict and warn of possible explosions, so that the blast furnace that is still in the production process after the cooling wall is damaged can take corresponding preventive measures before the explosion occurs, improve the production safety during the operation of the blast furnace, and ensure the safety and stability of the blast furnace operation.

[0063] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0064] First of all, the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0065] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those shown or described.

[0066] The blast furnace is a key piece of equipment in the ironmaking industry. It uses the high temperature and high pressure inside to cause a chemical reaction between iron ore and a reducing agent (usually coke) to separate metallic iron. There are multiple tapholes on the blast furnace, where metallic iron is separated inside the furnace and molten iron is smelted at high temperatures before flowing out from each taphole.

[0067] The outside of the blast furnace is equipped with cooling staves, which are an important part of the blast furnace. Its main function is to cool the blast furnace to protect the blast furnace shell. The cooling staves transfer the heat generated in the furnace to the cooling water to prevent the blast furnace shell from being deformed or damaged due to high temperature. These cooling staves are usually made of copper or cast iron and are arranged in key parts of the blast furnace, such as the belly, waist and lower part of the furnace body, to maintain the stability of the furnace body and extend the service life of the blast furnace.

[0068] In the blast furnace ironmaking process, the gas system plays a vital role. Coke and injected coal powder burn in the tuyere area, producing a large amount of gas, including carbon monoxide, carbon dioxide, nitrogen, hydrogen and methane. These gases heat and reduce the charge as they rise in the furnace, providing important energy and reducing agent for blast furnace ironmaking.

[0069] In order to ensure the safety and efficiency of the blast furnace production process, the blast furnace is equipped with multiple detection devices that can monitor key data in the blast furnace production process in real time. The monitored data include molten iron temperature at the tap hole, wind pressure value, wind volume value, hydrogen content in coal gas, and cooling wall temperature, which are important indicators for evaluating the operation status of the blast furnace and preventing potential problems.

[0070] The cooling stave may be damaged during the operation of the blast furnace due to a variety of reasons, such as the impact of high-temperature charge and gas flow, improper operating system, thermal stress of the cooling stave, etc. When the cooling stave is damaged, since the blast furnace is usually in continuous production for 24 hours, stopping the furnace to replace the cooling stave will cause production interruption, affecting output and economic benefits. In addition, replacing the cooling stave requires a lot of time and capital investment, including the manufacture, transportation, installation of the new cooling stave, and the wind-off and restart of the blast furnace. The high-temperature charge and gas that may exist inside the blast furnace also make it possible for the direct replacement of the cooling stave to pose a threat to the safety of the construction workers. Therefore, if the damage is not serious, temporary measures may be taken to maintain production, such as using atomization cooling, inserting micro-copper cooling rods, and forcing water to be pumped into the furnace skin. After the blast furnace cooling stave is damaged, appropriate measures are usually taken to deal with it according to the severity of the damage and the operating conditions of the blast furnace, rather than replacing it immediately.

[0071] However, after the cooling wall is damaged, its cooling effect is weakened, causing the furnace shell and lining to be directly exposed to the high temperature environment, which is prone to local overheating, and the pressure in the furnace increases sharply, thus causing explosion. Blast furnace explosion refers to a phenomenon in which the pressure and temperature in the furnace increase sharply during the operation of the blast furnace, causing the gas mixture in the furnace to ignite and burn without reaching the designed ignition position. The huge impact force generated by this combustion is opposite to the direction of the piston movement, causing the blast furnace to vibrate violently.

[0072] In addition, damage to the cooling wall may also cause cooling water to leak into the furnace, reacting with the high-temperature charge to produce a large amount of hydrogen and carbon monoxide. These gases accumulate in the furnace. If they are mixed with air to a certain proportion, they are very likely to explode when they encounter an ignition source, posing a great safety hazard to the production process. To some extent, blast furnace detonation can be regarded as an early warning signal of explosion. By preventing the occurrence of detonation, it reminds blast furnace operators to monitor and adjust the situation in the furnace to prevent more serious accidents (such as explosions).

[0073] In order to predict the risk of blast furnace explosion in advance and reduce the possibility of blast furnace explosion, an embodiment of the present application provides a blast furnace explosion prediction method. A blast furnace refers to a blast furnace that is still in the production process after the cooling wall is damaged. The following embodiment is analyzed when the number of cooling wall damages is one, including steps S11-S14.

[0074] If there are multiple damaged cooling walls, each damaged cooling wall is monitored separately and participates in the subsequent process separately. When the target parameter associated with one of the damaged cooling walls reaches its threshold condition, an early warning signal is output.

[0075] Step S11, monitoring multiple target parameters of the blast furnace; the multiple target parameters include at least: the molten iron temperature at the tap hole closest to the damaged cooling stave, the surface temperature of the cooling stave below the horizontal plane where the damaged cooling stave is located, the wind pressure value in the blast furnace, and the hydrogen content in the coal gas in the blast furnace;

[0076] Step S12, determining the parameter change amount of each target parameter;

[0077] Step S13, determining whether each parameter change has reached its corresponding threshold condition;

[0078] If in step S13, each parameter change reaches its corresponding threshold condition, then step S14 is executed;

[0079] If in step S13, the change in each parameter does not reach the corresponding threshold condition, the process returns to step S11 to continue monitoring the risk possibility of explosion in the blast furnace.

[0080] Step S14, outputting a warning signal.

[0081] A blast furnace detonation prediction method provided in an embodiment of the present application may be executed by a blast furnace controller or other controllers, and the embodiment of the present application does not impose any limitation on this.

[0082] Regarding step S11, multiple target parameters of the blast furnace are monitored; the multiple target parameters include at least: the molten iron temperature at the taphole closest to the damaged cooling wall, the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located, the wind pressure value in the blast furnace, and the hydrogen content in the coal gas in the blast furnace.

[0083] Further, monitoring various target parameters of the blast furnace includes steps S21 to S23:

[0084] Step S21, determining a target position where a damaged cooling wall exists in the blast furnace;

[0085] Step S22, determining a target monitoring area according to the target position; the target monitoring area includes the tap hole closest to the target position in the blast furnace and the cooling wall area below the horizontal plane where the target position is located;

[0086] Step S23, monitoring target parameters of the target monitoring area. The target parameters here include the molten iron temperature at the tap hole closest to the damaged cooling wall, and the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located.

[0087] It can be understood that the target parameter represents one of multiple types of parameter indicators, such as temperature, content, pressure value, etc. When the blast furnace is in a normal production process, the value of each target parameter is maintained within a certain allowable fluctuation range, which can be defined as a normal value. When each target parameter changes dramatically from the normal value, it indicates that the blast furnace operation is abnormal.

[0088] Specifically, when the cooling wall is damaged, cooling water may leak into the furnace. The cooling water evaporates rapidly in a high temperature environment, taking away a large amount of heat, causing the temperature of the molten iron at the tap hole closest to the damaged cooling wall and the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located to continue to drop. The local temperature drop will change the heat distribution in the furnace, resulting in incomplete combustion of the charge in certain areas, which is prone to local explosion.

[0089] Wind pressure refers to the pressure in the belly area of ​​a blast furnace, that is, the pressure generated by the gas produced by the combustion of fuel in the furnace. The blast furnace blows preheated air into the furnace through the tuyere. The air reacts with the carbon in the coke to produce gas, mainly carbon monoxide and hydrogen. These gases rise in the furnace, forming a certain pressure, which is the wind pressure. When the cooling wall is damaged, the heat conduction capacity of this area decreases, which affects the pressure distribution in the furnace and further affects the gas flow in the furnace. When the wind pressure fluctuates violently, it means that the volume of the gas in the furnace expands rapidly, causing the pressure in the furnace to rise sharply, and there is a risk of detonation.

[0090] Blast furnace gas is a byproduct produced during the ironmaking process of a blast furnace, and is mainly composed of hydrogen, carbon monoxide, carbon dioxide, nitrogen and methane. Since hydrogen is flammable, when it is mixed with oxygen in the air at a certain ratio (within the explosion limit), it will explode when it encounters an ignition source. The explosion limit of hydrogen is low, which means that when there is a certain amount of hydrogen in the gas, the risk of detonation increases.

[0091] For example, in a blast furnace under normal working conditions, the hydrogen content in the coal gas is about 3.8%. When the cooling wall is damaged, the hydrogen content in the coal gas increases to 4.2%. When the hydrogen content increases rapidly, there is a risk of detonation.

[0092] By specifically monitoring target parameters such as the molten iron temperature at the taphole closest to the damaged cooling wall, the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located, the wind pressure value in the blast furnace, and the hydrogen content in the coal gas in the blast furnace, and comprehensively evaluating the changes in target parameters, we can more comprehensively judge the operating status of the blast furnace and improve the accuracy of detonation prediction.

[0093] Regarding step S12, if the target parameter is the molten iron temperature at the tap hole closest to the damaged cooling wall, or the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located, the corresponding parameter change is the temperature change corresponding to the stage of continuous temperature drop;

[0094] If the target parameter is the wind pressure value in the blast furnace, the corresponding parameter change is the pressure fluctuation rate;

[0095] If the target parameter is the hydrogen content in the coal gas in the blast furnace, the corresponding parameter change is the rate of increase of the content.

[0096] It can be understood that the parameter variation refers to the difference or fluctuation value between the current state of each target parameter and the state when the blast furnace is in a normal production process.

[0097] For example, when the blast furnace is in normal production, the temperature of the molten iron at the tap hole is 1506°C, the surface temperature of the cooling wall is 55°C, and the wind pressure in the blast furnace is 4.70kg / cm 2 The hydrogen content in the blast furnace gas is about 3.8%.

[0098] When the temperature of molten iron at the taphole closest to the damaged cooling wall drops to 1496°C or below, the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located drops to 50°C or below, the wind pressure value in the blast furnace fluctuates and the fluctuation rate reaches 0.05Mpa / min, and the hydrogen content in the coal gas in the blast furnace increases and the rising rate reaches 3% / min, an early warning signal is output.

[0099] Regarding step 13, it is determined whether each parameter change has reached its corresponding threshold condition and output a warning signal. The embodiment of the present application provides the following two specific implementation methods, including method one and method two.

[0100] Method 1:

[0101] When the parameter change amount corresponding to the molten iron temperature at the tap hole closest to the damaged cooling stave reaches the corresponding first threshold condition, it is determined whether the parameter change amount corresponding to the surface temperature of the cooling stave below the horizontal plane where the damaged cooling stave is located reaches the corresponding second threshold condition;

[0102] When the parameter change amount corresponding to the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located reaches the corresponding second threshold condition, it is determined whether the parameter change amount corresponding to the wind pressure value in the blast furnace reaches the corresponding third threshold condition;

[0103] When the parameter change amount corresponding to the wind pressure value in the blast furnace reaches the corresponding third threshold condition, it is determined whether the parameter change amount corresponding to the hydrogen content in the coal gas in the blast furnace reaches the corresponding fourth threshold condition;

[0104] When the parameter change corresponding to the hydrogen content in the coal gas in the blast furnace reaches the corresponding fourth threshold condition, an early warning signal is output.

[0105] After the cooling wall is damaged, the cooling water enters the blast furnace and evaporates quickly to produce a large amount of steam and take away a large amount of heat. The impacts are as follows: the temperature of the molten iron at the taphole closest to the damaged cooling wall drops, the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located drops, the pressure in the blast furnace increases, causing wind pressure fluctuations, and the hydrogen content in the coal gas increases.

[0106] By sequentially judging whether the change in each parameter reaches the threshold, the accuracy and reliability of the early warning are improved. This sequential judgment mechanism optimizes the judgment logic, saves the judgment process, and makes a priority judgment on the location of the cooling wall damage, and then judges the overall situation of the blast furnace in turn, which helps to improve the trust of blast furnace operators in early warning signals and ensure that they can get a timely response when action is really needed.

[0107] Further, the first threshold condition is that the temperature change corresponding to the temperature drop stage of the molten iron at the tap hole closest to the damaged cooling wall reaches 10°C or more;

[0108] The second threshold condition is that the temperature change corresponding to the temperature drop stage of the cooling wall surface below the horizontal plane where the damaged cooling wall is located reaches 5°C or more;

[0109] The third threshold condition is that the fluctuation rate of the wind pressure value in the blast furnace reaches 0.05Mpa / min or above;

[0110] The fourth threshold condition is that the rate of increase of the hydrogen content in the coal gas in the blast furnace reaches 3% / min or above.

[0111] By setting specific threshold conditions, clear operating standards are provided for detonation warning, ensuring the practicality and effectiveness of the blast furnace detonation prediction method.

[0112] Method 2:

[0113] If the change in each parameter reaches the corresponding threshold condition within the preset time span, an early warning signal is output.

[0114] In the second method, the preset time span is set by the blast furnace operator according to the actual situation. The judgment process of each threshold condition is carried out separately. When any target parameter reaches its threshold condition, within the subsequent preset time span, if the remaining target parameters all reach the corresponding threshold conditions, an early warning signal is output; if the remaining target parameters do not all reach the corresponding threshold conditions, no early warning signal is output, so as to improve the applicability of the blast furnace explosion prediction method.

[0115] The threshold conditions are usually set by production personnel according to the blast furnace conditions.

[0116] In some embodiments, the method for determining the threshold condition may be implemented by the following steps, including:

[0117] Step S31: acquiring historical data of the blast furnace, the historical data including the values ​​of each target parameter when the blast furnace explodes and the values ​​of each target parameter when the blast furnace is in normal production after the cooling wall is damaged;

[0118] Step S32: Determine the threshold conditions corresponding to each target parameter based on historical data.

[0119] The warning threshold is set based on actual situations, making the prediction method more in line with the actual production environment. Through historical data analysis, the changing trend of each target parameter before the detonation occurs can be predicted more accurately, thereby improving the prediction ability of this application, helping to reduce production interruptions caused by misjudgment of target parameters, and ensuring that warnings can be issued in time before the real detonation risk occurs.

[0120] Preferably, the specific threshold condition can be set by multiple groups of historical data to improve sensitivity.

[0121] A specific example is provided below to describe in detail a blast furnace detonation prediction method provided by the present application.

[0122] Step S41, monitoring various target parameters of the blast furnace;

[0123] Step S42, determining the parameter change amount of each target parameter;

[0124] Step S43, determining whether the temperature drop of the molten iron at the tap hole closest to the damaged cooling wall reaches 10°C; if so, executing step S44; if not, executing step S41;

[0125] Step S44, determining whether the temperature drop value of the cooling wall surface below the horizontal plane where the damaged cooling wall is located reaches 5°C; if so, executing step S45; if not, executing step S41;

[0126] Step S45, determining whether the fluctuation rate of the wind pressure value in the blast furnace reaches 0.05Mpa / min; if so, executing step S46; if not, executing step S41;

[0127] Step S46, determining whether the rate of increase of the hydrogen content in the coal gas in the blast furnace reaches 3% / min; if so, executing step S47; if not, executing step S41;

[0128] Step S47, outputting a warning signal.

[0129] By receiving early warning signals, blast furnace production personnel can quickly identify abnormal situations and promptly remind operators to take countermeasures before the blast furnace explodes, reducing the possibility of blast furnace explosions and improving production safety, thereby protecting the blast furnace structure and ensuring production continuity.

[0130] Based on the same inventive concept, the present application embodiment provides the following Figure 2 A blast furnace explosion prediction device is shown, the device comprising:

[0131] The acquisition module 21 is used to monitor multiple target parameters of the blast furnace; the multiple target parameters include at least: the molten iron temperature at the tap hole closest to the damaged cooling wall, the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located, the wind pressure value in the blast furnace, and the hydrogen content in the coal gas in the blast furnace;

[0132] A first determination module 22, used to determine the parameter change amount of each target parameter;

[0133] The first calculation module 23 is used to output a warning signal if each parameter change reaches the corresponding threshold condition, and the warning signal is used to indicate that there is a risk of explosion in the blast furnace.

[0134] Furthermore, the device also includes a second calculation module, which is used to:

[0135] When the parameter change amount corresponding to the molten iron temperature at the tap hole closest to the damaged cooling stave reaches the corresponding first threshold condition, it is determined whether the parameter change amount corresponding to the surface temperature of the cooling stave below the horizontal plane where the damaged cooling stave is located reaches the corresponding second threshold condition;

[0136] When the parameter change amount corresponding to the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located reaches the corresponding second threshold condition, it is determined whether the parameter change amount corresponding to the wind pressure value in the blast furnace reaches the corresponding third threshold condition;

[0137] When the parameter change amount corresponding to the wind pressure value in the blast furnace reaches the corresponding third threshold condition, it is determined whether the parameter change amount corresponding to the hydrogen content in the coal gas in the blast furnace reaches the corresponding fourth threshold condition;

[0138] When the parameter change corresponding to the hydrogen content in the coal gas in the blast furnace reaches the corresponding fourth threshold condition, an early warning signal is output.

[0139] Furthermore, the device also includes a third calculation module, which is used to output a warning signal if the change in each parameter reaches the corresponding threshold condition within a preset time span.

[0140] Furthermore, the device also includes a second determining module, configured to:

[0141] Acquire historical data of the blast furnace, the historical data including the values ​​of each target parameter when the blast furnace explodes and the values ​​of each target parameter when the blast furnace is in a normal production process after the cooling wall is damaged;

[0142] Based on historical data, determine the threshold conditions corresponding to each target parameter.

[0143] Furthermore, the device also includes a third determining module, configured to:

[0144] Determine the target location of damaged cooling staves in the blast furnace;

[0145] Determine the target monitoring area according to the target position; the target monitoring area includes the tap hole closest to the target position in the blast furnace and the cooling wall area below the horizontal plane where the target position is located;

[0146] Monitor target parameters of the target monitoring area.

[0147] Based on the same inventive concept, the present application embodiment provides the following Figure 3 An electronic device as shown includes:

[0148] Processor 31;

[0149] A memory 32 for storing instructions executable by the processor 31;

[0150] The processor 31 is configured to execute to implement a blast furnace detonation prediction method as provided above.

[0151] Based on the same inventive concept, an embodiment of the present application provides a non-temporary computer-readable storage medium. When the instructions in the storage medium are executed by the processor 31 of the electronic device, the electronic device can execute a blast furnace detonation prediction method as provided above.

[0152] Since the electronic device introduced in this embodiment is an electronic device used to implement the information processing method in the embodiment of the present application, based on the information processing method introduced in the embodiment of the present application, a person skilled in the art can understand the specific implementation of the electronic device of the present embodiment and its various variations, so how the electronic device implements the method in the embodiment of the present application is not described in detail here. As long as a person skilled in the art implements the electronic device used by the information processing method in the embodiment of the present application, it belongs to the scope of protection of this application.

[0153] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0154] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks 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 processor, 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.

[0155] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate 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 A function specified in one or more boxes.

[0156] 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 instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0157] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned 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 the present invention.

[0158] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for predicting blast furnace explosion, characterized in that: The blast furnace refers to a blast furnace that is still in production after the cooling wall is damaged, and the method comprises: Monitoring multiple target parameters of the blast furnace; the multiple target parameters at least include: the molten iron temperature at the tap hole closest to the damaged cooling stave, the surface temperature of the cooling stave below the horizontal plane where the damaged cooling stave is located, the wind pressure value in the blast furnace, and the hydrogen content in the coal gas in the blast furnace; Determining a parameter change amount of each of the target parameters; If each parameter change reaches its corresponding threshold condition, an early warning signal is output, and the early warning signal is used to indicate that there is a risk of explosion in the blast furnace.

2. The method for predicting blast furnace explosion according to claim 1, characterized in that: If the change in each parameter reaches the corresponding threshold condition, an early warning signal is output, including: When the parameter change amount corresponding to the molten iron temperature at the tap hole closest to the damaged cooling stave reaches the corresponding first threshold condition, it is determined whether the parameter change amount corresponding to the surface temperature of the cooling stave below the horizontal plane where the damaged cooling stave is located reaches the corresponding second threshold condition; When the parameter change amount corresponding to the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located reaches the corresponding second threshold condition, it is determined whether the parameter change amount corresponding to the wind pressure value in the blast furnace reaches the corresponding third threshold condition; When the parameter change amount corresponding to the wind pressure value in the blast furnace reaches the corresponding third threshold condition, it is determined whether the parameter change amount corresponding to the hydrogen content in the coal gas in the blast furnace reaches the corresponding fourth threshold condition; When the parameter change corresponding to the hydrogen content in the coal gas in the blast furnace reaches the corresponding fourth threshold condition, the early warning signal is output.

3. The method for predicting blast furnace explosion according to claim 2, characterized in that: The first threshold condition is that the temperature change corresponding to the temperature drop stage of the molten iron at the tap hole closest to the damaged cooling wall reaches 10°C or more; The second threshold condition is that the temperature change corresponding to the temperature drop stage of the cooling wall surface below the horizontal plane where the damaged cooling wall is located reaches 5°C or more; The third threshold condition is that the fluctuation rate of the wind pressure value in the blast furnace reaches 0.05Mpa / min or above; The fourth threshold condition is that the rate of increase of the hydrogen content in the coal gas in the blast furnace reaches 3% / min or above.

4. The method for predicting blast furnace explosion according to claim 1, characterized in that: If the change in each parameter reaches the corresponding threshold condition, an early warning signal is output, including: If the change in each parameter reaches the corresponding threshold condition within a preset time span, the warning signal is output.

5. The method for predicting blast furnace explosion according to any one of claims 1 to 4, characterized in that: The method for determining the threshold condition includes: Acquiring historical data of the blast furnace, the historical data including values ​​of each target parameter when the blast furnace explodes and values ​​of each target parameter when the blast furnace is in a normal production process after the cooling wall is damaged; The threshold condition corresponding to each target parameter is determined according to the historical data.

6. The method for predicting blast furnace explosion according to claim 1, characterized in that: The monitoring of the various target parameters of the blast furnace includes: Determine a target location where a damaged cooling wall exists in the blast furnace; Determine a target monitoring area according to the target position; the target monitoring area includes the tap hole in the blast furnace closest to the target position and the cooling wall area below the horizontal plane where the target position is located; The target parameter of the target monitoring area is monitored.

7. The method for predicting blast furnace explosion according to claim 1, characterized in that: If the target parameter is the molten iron temperature at the tap hole closest to the damaged cooling wall, or the surface temperature of the cooling wall below the horizontal plane where the damaged cooling wall is located, the corresponding parameter change is the temperature change corresponding to the stage of continuous temperature drop; If the target parameter is the wind pressure value in the blast furnace, the corresponding parameter change is the pressure fluctuation rate; If the target parameter is the hydrogen content in the coal gas in the blast furnace, the corresponding parameter change is the rate of increase of the content.

8. A blast furnace explosion prediction device, characterized in that: include: An acquisition module, used for monitoring various target parameters of the blast furnace; The target parameters include at least: the molten iron temperature at the tap hole closest to the damaged cooling stave, the surface temperature of the cooling stave below the horizontal plane where the damaged cooling stave is located, the wind pressure value in the blast furnace, and the hydrogen content in the coal gas in the blast furnace; A first determination module, used to determine the parameter change amount of each target parameter; The first calculation module is used to output a warning signal if each parameter change reaches the corresponding threshold condition, and the warning signal is used to indicate that the blast furnace has a risk of explosion.

9. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute to implement the blast furnace detonation prediction method according to any one of claims 1-7.

10. A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to implement the blast furnace detonation prediction method according to any one of claims 1 to 7.

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