A production control method, system, electronic equipment, and storage medium for stabilizing the carbon cycle.

Abstract

This application relates to a production control method, system, electronic equipment, and storage medium for a stable carbon cycle blast furnace, and includes obtaining the type of circulating gas for blast furnace production, the real-time amount of circulating gas, the real-time amounts of each component in the circulating gas, and the real-time average specific heat capacity of the circulating gas. Based on the real-time amount of circulating gas, the real-time amounts of each component in the circulating gas, and the type of circulating gas, an adjustment method is determined, and the blast furnace production conditions are adjusted according to the adjustment method. Production is carried out according to the adjusted blast furnace production conditions, and the real-time production volume, real-time production indicators, circulating gas exchange ratio, calorific value data, and the amount of gas formed by the combustion of fuel before the wind outlet are obtained according to the adjusted blast furnace production conditions. Based on the calorific value data, the amount of gas formed by the combustion of fuel before the wind outlet, the exchange ratio ratio, and the real-time production indicators, the operating state is determined. If the operating state is unstable, the adjustment method is repeated until it is stable, and the operating state is repeatedly checked.

Description

[Technical Field]

[0001] This application relates to the field of blast furnace production technology. Specifically, it concerns production control methods, systems, electronic equipment, and storage media for stabilizing carbon-cycle blast furnaces. [Background technology]

[0002] A blast furnace is a high-temperature, backflow, sealed reaction vessel. When a blast furnace is in operation, iron ore, coke, and slugging flux (usually limestone) are added from the top of the furnace, and preheated air is blown in from the vents at the bottom of the furnace. At high temperatures, the carbon in the fuel (e.g., coke, pulverized coal, heavy oil, natural gas, etc.) reacts with the oxygen in the air entering the furnace to form carbon monoxide and hydrogen. As these gases rise through the furnace, they react with the iron ore, being reduced to produce iron and by-products such as blast furnace slag and blast furnace gas. Liquid pig iron is discharged from the iron nozzle, and unreduced impurities in the iron ore combine with fluxes such as limestone to form slag, which is also discharged from the iron nozzle. The generated gas is discharged from the top of the furnace. After dust removal, it is used as fuel for hot blast furnaces, heating furnaces, coke ovens, boilers, etc.

[0003] Stable operation of a blast furnace is a fundamental condition for high efficiency and low consumption. Conventional blast furnaces stabilize their conditions by stabilizing the quality of raw materials and by stabilizing the airflow. Fluctuations in factors affecting the stable operation of a blast furnace, such as raw material quality and airflow, are relatively small and relatively easy to control. However, carbon cycle blast furnaces have the added unstable element of gas injection, increasing the risk of fluctuations in blast furnace conditions compared to conventional blast furnaces. Furthermore, compared to other fluctuating factors such as fluctuations in raw material conditions, the injected gas is a secondary energy source that is more prone to fluctuations. The frequency and range of fluctuations in its composition and generation amount are large and difficult to control. Injecting highly fluctuating gas into a blast furnace makes it impossible to stabilize the conditions of a carbon cycle blast furnace. The effect of replacing solid fuel with gas in the blast furnace is not achieved, and ultimately the carbon reduction effect of the carbon cycle blast furnace is unsatisfactory. [Overview of the project]

[0004] Based on the above-mentioned drawbacks of the prior art, the present application provides a production control method, system, electronic equipment and storage medium for stabilizing a carbon circulation blast furnace.

[0005] First, the present application provides a production control method for stabilizing a carbon circulation blast furnace. This production control method includes the following content. Obtain the type of circulating gas produced in the blast furnace, the real-time amount of circulating gas, the real-time content of each component in the circulating gas, and the real-time average specific heat capacity of the circulating gas. Determine the adjustment method according to the real-time amount of circulating gas, the real-time content of each component in the circulating gas, and the type of circulating gas. Adjust the production conditions of the blast furnace according to the adjustment method, and produce according to the adjusted blast furnace production conditions. Obtain the real-time production volume, real-time production index, replacement ratio of circulating gas, heat quantity data, and gas volume formed by the combustion of fuel in front of the tuyere produced according to the adjusted blast furnace production conditions. Determine the operating state based on the heat quantity data, the gas volume formed by the combustion of fuel in front of the tuyere, the exchange ratio, and the real-time production index. The operating state includes stable and unstable. If the operating state is not stable, repeat the adjustment according to the adjustment method until it is stable, and determine the operating state.

[0006] In the embodiment of the present application, determine the adjustment method. It includes the following content. Determine the variation amount of the circulating gas based on the real-time amount of the circulating gas corresponding to adjacent time points. Determine the variation amount of the calorific value based on the real-time content of each component in the circulating gas. Determine the adjustment method based on the type of circulating gas, the variation amount of the circulating gas, and the variation amount of the calorific value.

[0007] In the embodiment of the present application, determine the heat variation amount. It includes the following content. Determine the real-time heat of the circulating gas based on the real-time content of each component in the circulating gas. The amount of heat fluctuation is determined based on the real-time heat of the circulating gas corresponding to adjacent time points.

[0008] In the embodiments of this application, the types of circulating gas include coke oven gas, converter gas, and blast furnace gas, and the adjustment method includes the following: If the fluctuation in the circulating gas is smaller than a preset threshold for gas quantity fluctuation, the type of circulating gas is coke oven gas, and the method for adjusting the blast furnace production conditions is determined by increasing the amount of pulverized coal injected according to a preset first injection amount, increasing the coke ratio according to a preset first coke ratio, and increasing the oxygen supply amount according to a preset first oxygen supply amount. If the fluctuation in the circulating gas is smaller than a preset threshold for gas quantity fluctuation, the type of circulating gas is converter gas, the amount of pulverized coal injected is increased according to a preset second injection amount, the coke ratio is increased according to a preset second coke ratio, and the oxygen supply rate is increased according to a preset second oxygen supply amount, thereby determining the method for adjusting the blast furnace production conditions. If the fluctuation in the circulating gas is smaller than a preset threshold for gas quantity fluctuation, the type of circulating gas is blast furnace gas, and the method for adjusting the blast furnace production conditions is determined by increasing the amount of pulverized coal injected according to a preset third injection amount, increasing the coke ratio according to a preset third coke ratio, and increasing the oxygen supply according to a preset third oxygen supply amount. If the calorific value fluctuation is greater than a preset threshold for calorific value fluctuation, the method for adjusting the blast furnace production conditions is determined by reducing the amount of pulverized coal injected according to a preset fourth injection amount, and by reducing the coke ratio according to a preset fourth coke ratio.

[0009] The embodiment of this application defines the adjustment method. This includes the following: If the fluctuation in the circulating gas is greater than a preset threshold for gas quantity fluctuation, the type of circulating gas is coke oven gas, and the method for adjusting the blast furnace production conditions is determined by reducing the amount of pulverized coal injected according to a preset fifth injection amount, reducing the coke ratio according to a preset fifth coke ratio, and reducing the oxygen supply amount according to a preset fourth oxygen supply amount. If the fluctuation in the circulating gas is greater than a preset threshold for gas quantity fluctuation, the type of circulating gas is converter gas, and the method for adjusting the blast furnace production conditions is determined by reducing the amount of pulverized coal injected according to a preset sixth injection amount, reducing the coke ratio according to a preset sixth coke ratio, and reducing the oxygen supply amount according to a preset fifth oxygen supply amount. If the fluctuation in the circulating gas is greater than a preset threshold for gas quantity fluctuation, the type of circulating gas is blast furnace gas, and the method for adjusting the blast furnace production conditions is determined by reducing the amount of pulverized coal injected according to a preset seventh injection amount, reducing the coke ratio according to a preset seventh coke ratio, and reducing the oxygen supply according to a preset sixth oxygen supply amount. If the calorific value fluctuation is smaller than a preset threshold for calorific value fluctuation, the method for adjusting the blast furnace production conditions is determined by increasing the amount of pulverized coal injected according to a preset eighth injection amount, and increasing the coke ratio according to a preset eighth coke ratio.

[0010] In the substantial examples of this application, the above-mentioned heat data includes the amount of heat released by the combustion of coke in front of the air vent, the amount of heat released by the combustion of pulverized coal in front of the air vent, the physical heat when the coke enters the combustion zone, the amount of heat brought in by the air vent, the amount of heat consumed by the decomposition of water, and the amount of heat consumed by the decomposition of pulverized coal. The operating conditions are determined. The following is included. The theoretical combustion temperature is determined by the heat generated from the combustion of coke in front of the air vent, the heat generated from the combustion of pulverized coal in front of the air vent, the heat generated from the gas, the heat generated from the decomposition of hydrocarbons in the gas into carbon monoxide and hydrogen, the physical heat generated when the coke enters the combustion zone, the heat generated from the airflow, the heat generated from the decomposition of water, the heat generated from the decomposition of pulverized coal, the volume of gas formed by the combustion of the fuel in front of the air vent, and the average specific heat capacity of the real-time circulating gas. The operating conditions are determined based on theoretical combustion temperature, redemption ratio, and real-time production indicators.

[0011] The operating mode is defined in the embodiments of this application. This includes the following: If the theoretical combustion temperature is equal to or greater than a preset lower temperature threshold, and equal to or less than a preset upper temperature threshold, and the redemption ratio is equal to or greater than a preset redemption ratio threshold, and the real-time production index is equal to or greater than a preset production index threshold, then the operating state is determined to be stable. If the theoretical combustion temperature is lower than a preset lower temperature threshold, the operating state is determined to be unstable. If the theoretical combustion temperature exceeds a preset upper temperature threshold, the operating state is determined to be unstable. If the exchange ratio is less than a preset exchange ratio threshold, the operating state is determined to be unstable. If the real-time production indicator is lower than a pre-set production indicator threshold, the operating status is determined to be unstable.

[0012] Secondly, this application provides a production control system for stabilizing carbon cycle blast furnaces. This production control system includes the following: This is the first data collection module. It acquires the type of circulating gas produced by the blast furnace, the real-time amount of circulating gas, the real-time content of each component of the circulating gas, and the real-time average specific heat capacity of the circulating gas. This is the first definitive module. The adjustment method is determined according to the real-time amount of circulating gas, the real-time content of each component of the circulating gas, and the type of circulating gas. This is a processing module. Depending on the adjustment method, it adjusts the production conditions of the blast furnace and produces according to the adjusted production conditions of the blast furnace. This is the second data collection module. It acquires real-time production volume, real-time production indicators, circulating gas exchange ratio, calorific value data, and gas volume formed by fuel combustion in front of the wind outlet, all under the adjusted blast furnace production conditions. This is the second definitive module. It determines the operating state based on heat data, the amount of gas formed by fuel combustion in front of the air vent, the exchange ratio, and real-time production indicators. The operating state includes stable and unstable conditions. This is the third confirmation module. If the operating status is unstable, the system will repeatedly adjust according to the adjustment method until the operating status stabilizes, and the operating status will be repeatedly confirmed.

[0013] Third, this application provides one type of electronic equipment. Its features include the following: One or more processors. The storage device stores one or more programs. When the one or more programs described above are executed by one or more processors, this electronic equipment realizes the production control method that stabilizes the circulating blast furnace described above.

[0014] Fourth, this application provides a medium on which a computer program can be read. The computer program is stored thereon. When the aforementioned computer program is executed by the processor, the computer executes a production control method for a stable carbon cycle blast furnace described therein.

[0015] The production control method, system, electronic equipment, and storage medium for stabilizing a carbon cycle blast furnace described in this application have the following beneficial effects. This application obtains the type of circulating gas produced in the blast furnace, the real-time amount of circulating gas, the real-time content of each component in the circulating gas, and the real-time average specific heat capacity of the circulating gas. Based on the real-time amount of circulating gas, the real-time content of each component in the circulating gas, and the type of circulating gas, an adjustment method is determined, and the blast furnace production conditions are adjusted according to the adjustment method. Then, production is carried out according to the adjusted blast furnace production conditions. Based on the adjusted blast furnace production conditions, the real-time production volume, real-time production index, circulating gas exchange ratio, calorific value data, and the amount of gas formed by fuel combustion before the wind outlet are obtained. Based on the calorific value data, the amount of gas formed by fuel combustion before the wind outlet, the exchange ratio, and the real-time production index, the operating state is determined. If the operating state is not stable, adjustments are repeatedly made according to the adjustment method until the operating state is stable and determined. In other words, in the blast furnace production process, this application achieves stable operation of the carbon-recycle blast furnace by coordinating the process conditions of carbon-recycle blast furnace production, improving the exchange ratio between circulating gas and solid fuel, and achieving the objective of reducing blast furnace smelting carbon emissions.

[0016] Please understand that the general explanation above and the detailed explanation below are for illustrative purposes only and do not limit this application. [Brief explanation of the drawing]

[0017] The attached drawings will be incorporated into the instruction manual and will become part of the instruction manual. They will show embodiments consistent with this application and explain the principles of this application together with the instruction manual. The following attached drawings are merely examples of the application, and professionals in this art may obtain other drawings from these. Details of the attached drawings are as follows.

[0018] [Figure 1] Figure 1 is a flowchart of a production control method for stabilizing a carbon-cycle blast furnace according to one embodiment of this application. [Figure 2] Figure 2 is a flowchart showing the configuration of the embodiment according to the adjustment method of the embodiment shown in Figure 1. [Figure 3]Figure 3 is a flowchart showing the thermal wave velocity of the embodiment shown in Figure 2. [Figure 4] Figure 4 is a flowchart showing the configuration of the embodiment according to the adjustment method of the embodiment shown in Figure 2. [Figure 5] Figure 5 is a flowchart showing the configuration of the embodiment according to the adjustment method of the embodiment shown in Figure 2. [Figure 6] Figure 6 is a flowchart illustrating a different example of the operating conditions shown in Figure 1. [Figure 7] Figure 7 is a flowchart illustrating a different example of the operating conditions shown in Figure 6. [Figure 8] Figure 8 is a flowchart of a production control method for stabilizing a carbon-cycle blast furnace, as shown in one embodiment. [Figure 9] Figure 9 is a diagram of a production control system for stabilizing a carbon-cycle blast furnace according to an embodiment of this application. [Figure 10] Figure 10 is a diagram illustrating the configuration of a computer system suitable for electronic equipment according to an embodiment of this application. [Modes for carrying out the invention]

[0019] The invention will be described below through accompanying drawings and examples. Professionals in this field will be able to easily understand the merits and effects of the invention from the contents disclosed in this instruction manual. The invention can be implemented or applied in various other embodiments. Each detail in this instruction manual can be improved or modified in various ways based on different perspectives and applications, without departing from the spirit of the invention. The examples have been selected in preference to illustrate the invention and not to limit its scope.

[0020] Furthermore, the drawings shown in the following embodiments are for illustrative purposes only to explain the basic concept of this invention, and do not represent the number, shape, or size of the components in actual implementation. Only the components relevant to this invention are shown, and the form, number, and proportion of each component can be freely changed in actual implementation, and the arrangement of the components can become more complex.

[0021] In the following description, many details are considered in order to provide a clearer explanation of the embodiments of the present invention. For practitioners in this field, these specific details are not necessary, and embodiments of the present invention can still be implemented. In other embodiments, well-known structures and devices are shown in diagram form rather than in detail, making it easier to understand the embodiments of the present invention.

[0022] Please refer to Figure 1. Figure 1 is a flowchart of a production method for a stable carbon cycle blast furnace according to an exemplary embodiment of this application.

[0023] As shown in Figure 1, in an exemplary embodiment of this application, the production method for a stable carbon cycle blast furnace includes at least steps S110 to S160. A detailed description is as follows.

[0024] Step S110 obtains the type of circulating gas produced in the blast furnace, the real-time amount of circulating gas, the real-time content of each component in the circulating gas, and the real-time average specific heat capacity of the circulating gas. The circulating gas includes coke oven gas, converter gas, and blast furnace gas. The real-time average specific heat capacity of a circulating gas can be obtained by multiplying the real-time content of each component in the real-time circulating gas by the specific heat capacity of the corresponding component, and then adding these together.

[0025] Step S120 determines the adjustment method based on the real-time amount of circulating gas, the real-time content of each component in the circulating gas, and the type of circulating gas.

[0026] Step S130 adjusts the production conditions of the blast furnace according to the adjustment method, and then carries out production according to the adjusted production conditions of the blast furnace.

[0027] Step S140 obtains the real-time production volume, real-time production indicators, circulating gas exchange ratio, calorific value data, and the amount of gas formed by fuel combustion in front of the wind outlet, based on the adjusted blast furnace production conditions.

[0028] Step S150 determines the operating state based on heat data, the amount of gas formed by fuel combustion in front of the air vent, the exchange ratio, and real-time production indicators. Real-time production indicators include molten iron production, blast furnace utilization coefficient (i.e., blast furnace effective volume utilization coefficient), energy consumption, and overall fuel ratio. In this application, operating conditions include stable and unstable.

[0029] If the operating state of step S160 is not stable, follow the adjustment procedure and repeatedly adjust until it stabilizes and the operating state is finalized.

[0030] In related technologies, blast furnaces stabilize their conditions by stabilizing the quality of raw materials and the efficiency of blowing, resulting in relatively small fluctuations in factors affecting stable blast furnace operation, such as raw material quality and blowing efficiency, making them easier to control. The inventors analyzed related technologies and added the unstable element of gas injection to the carbon cycle blast furnace conditions. They discovered that this increased the risk of fluctuations in the blast furnace conditions compared to conventional blast furnace conditions. Furthermore, compared to other fluctuating factors such as fluctuations in raw material conditions, gas is a secondary energy source, so its composition and generation amount have large fluctuation frequencies and ranges, making it difficult to control. Injecting highly fluctuating gas into the blast furnace makes it difficult to stabilize the carbon cycle blast furnace conditions, preventing the effect of replacing solid fuel with gas from being achieved, and ultimately resulting in an undesirable smelting and carbon reduction effect in the carbon cycle blast furnace conditions. Therefore, the inventors obtain the type of circulating gas produced in the blast furnace, the real-time amount of circulating gas, the real-time content of each component in the circulating gas, and the real-time average specific heat capacity of the circulating gas. They then determine the adjustment method according to the real-time amount of circulating gas, the real-time content of each component in the circulating gas, and the type of circulating gas, and adjust the blast furnace production conditions according to the adjustment strategy. Production is then carried out according to the adjusted blast furnace production conditions, and the real-time production volume, real-time production index, circulating gas exchange ratio, calorific value data, and amount of gas formed by fuel combustion before the wind outlet are obtained according to the adjusted blast furnace production conditions. Based on the calorific value data, amount of gas formed by fuel combustion before the wind outlet, exchange ratio, and real-time production index, the operating state is determined. If the operating state is not stable, the adjustment is repeated according to the adjustment method until it is stable and the operating state is determined. In other words, in the blast furnace production process, this application achieves the objective of stable operation of a carbon-recycle blast furnace by coordinating the process conditions of carbon-recycle blast furnace production, improving the circulating gas exchange solid fuel ratio, and reducing blast furnace smelting carbon emissions.

[0031] Please refer to Figure 2. Figure 2 is a flowchart of an exemplary embodiment that defines the adjustment method in the embodiment shown in Figure 1.

[0032] As shown in Figure 2, in exemplary embodiments of this application, the process for determining the adjustment method in the embodiment shown in Figure 1 includes steps S210 to S230. A detailed description follows.

[0033] Step S210 determines the fluctuation amount of circulating gas based on the real-time amount of circulating gas corresponding to adjacent time points. Specifically, it is the difference between the real-time amount of circulating gas corresponding to an adjacent later point in time and the real-time amount of circulating gas corresponding to an adjacent earlier point in time. In other words, it is the fluctuation amount of circulating gas.

[0034] Step S220 determines the fluctuation in calorific value based on the real-time content of each component in the circulating gas.

[0035] Step S230 determines the adjustment method based on the type of circulating gas, the amount of variation in the circulating gas, and the amount of variation in calorific value.

[0036] Please refer to Figure 3. Figure 3 is a flowchart of an exemplary embodiment that defines the adjustment method in the embodiment shown in Figure 2.

[0037] As shown in Figure 3, in exemplary embodiments of this application, the process for determining the heat generation variation in the embodiment shown in Figure 2 includes steps S310 and S320. A detailed description follows.

[0038] Step S310 determines the real-time calorific value of the circulating gas based on the real-time content of each component in the circulating gas. For example, the real-time calorific value of the circulating gas is determined using calculation formula (I).

[0039]

number

[0040] Among them, Q ガス This represents the real-time calorific value of the circulating gas. The unit is kJ / Nm 3That is. ω CO ω is the volume fraction of carbon monoxide gas in the circulating gas. H2 ω is the volume fraction of hydrogen in the circulating gas. CH4 This is the volume fraction of methane in the circulating gas.

[0041] Step S320 determines the fluctuation in calorific value based on the real-time calorific value of the circulating gas corresponding to the adjacent time point. Specifically, the difference between the real-time calorific value of the circulating gas corresponding to an adjacent later point in time and the real-time calorific value of the circulating gas corresponding to an adjacent earlier point in time is the calorific value fluctuation.

[0042] Please refer to Figure 4. Figure 4 is a flowchart of an exemplary embodiment that defines the adjustment method in the embodiment shown in Figure 2.

[0043] As shown in Figure 4, in exemplary embodiments of this application, the types of circulating gas include coke oven gas, converter gas, and blast furnace gas. The process for determining the adjustment method in the embodiment shown in Figure 2 includes steps S410 to S440. A detailed description is as follows.

[0044] Step S410 determines that if the fluctuation amount of the circulating gas is smaller than a preset threshold for gas quantity fluctuation, the type of circulating gas is coke oven gas, the amount of pulverized coal injected is increased according to a preset first injection amount, the coke ratio is increased according to a preset first coke ratio, and the oxygen supply amount is increased according to a preset first oxygen supply amount, thereby establishing the adjustment method for blast furnace production conditions.

[0045] Step S420 determines the adjustment method for blast furnace production conditions by determining that if the fluctuation amount of the circulating gas is smaller than a preset threshold for gas quantity fluctuation, the type of circulating gas is converter gas, the amount of pulverized coal injected is increased by a preset second injection amount, the coke ratio is increased by a preset second coke ratio, and the oxygen supply is increased by a preset second oxygen supply amount.

[0046] Step S430 determines that if the fluctuation amount of the circulating gas is smaller than a preset threshold for gas quantity fluctuation, the type of circulating gas is blast furnace gas, the amount of pulverized coal injected is increased by a third preset injection amount, the coke ratio is increased by a third preset coke ratio, and the oxygen enrichment airflow is increased by a third preset oxygen enrichment airflow amount, thus establishing the method for adjusting the blast furnace production conditions.

[0047] In step S440, if the calorific value fluctuation is greater than a preset threshold for calorific value fluctuation, the amount of pulverized coal injected is reduced according to a preset fourth injection amount, and the coke ratio is reduced according to a preset fourth coke ratio, thereby determining the adjustment method for blast furnace production conditions.

[0048] There are a few things I'd like to explain here. Regarding the setting thresholds for gas volume fluctuations, firstly, set the discharge rate. Secondly, set the coke ratio. Thirdly, set the discharge rate. Thirdly, set the coke ratio. Fourthly, set the discharge rate. The coke ratio can be set by the user.

[0049] Please refer to Figure 5. Figure 5 is a flowchart of another exemplary embodiment that defines the adjustment method in the embodiment shown in Figure 2.

[0050] As shown in Figure 5, in another exemplary embodiment of this application, the process for determining the adjustment method in the embodiment shown in Figure 2 includes steps S510 to S540, as described in detail below. A detailed description is as follows.

[0051] Step S510 determines the adjustment method for blast furnace production conditions by determining that if the fluctuation amount of the circulating gas is greater than a preset threshold for gas quantity fluctuation, the type of circulating gas is coke oven gas, the amount of pulverized coal injected is reduced according to a preset fifth injection amount, the coke ratio is reduced according to a preset fifth coke ratio, and the oxygen injection amount is reduced according to a preset fourth oxygen injection amount.

[0052] Step S520 determines the adjustment method for blast furnace production conditions by determining that if the fluctuation amount of the circulating gas is greater than a preset threshold for gas quantity fluctuation, the type of circulating gas is converter gas, the amount of pulverized coal injected is reduced according to a preset sixth injection amount, the coke ratio is reduced according to a preset sixth coke ratio, and the oxygen supply is reduced according to a preset fifth oxygen supply amount.

[0053] Step S530 determines the adjustment method for blast furnace production conditions by determining that if the fluctuation amount of the circulating gas is greater than a preset threshold for fluctuation of the gas amount, the type of circulating gas is blast furnace gas, the amount of pulverized coal injected is reduced according to a preset seventh injection amount, the coke ratio is reduced according to a preset seventh coke ratio, and the oxygen supply is reduced according to a preset sixth oxygen supply amount.

[0054] In step S540, if the calorific value fluctuation is smaller than a preset threshold for calorific value fluctuation, the amount of pulverized coal injected is increased according to a preset eighth injection amount, and the coke ratio is increased according to a preset eighth coke ratio, thereby establishing the adjustment method for blast furnace production conditions.

[0055] What I want to explain here is that the fifth setting is the discharge rate. The fifth setting is the coke ratio. The fourth setting is the oxygen airflow rate. The sixth setting is the discharge rate. The sixth setting is the coke ratio. The fifth setting is the oxygen airflow rate. The seventh setting is the discharge rate. The seventh setting is the coke ratio. The sixth setting is the oxygen airflow rate. The eighth setting is the discharge rate. The eighth setting is the coke ratio and the eighth oxygen airflow rate, which you set yourself. I won't explain them here.

[0056] Please refer to FIG. 6. FIG. 6 is a flowchart in an exemplary embodiment for determining the operating state in the embodiment shown in FIG. 1.

[0057] As shown in FIG. 6, in the exemplary embodiment of the present application, the calorific value data includes the calorific value due to the combustion of coke in front of the tuyere, the calorific value due to the combustion of pulverized coal in front of the tuyere, the physical heat when the coke enters the combustion zone, the calorific value due to the blast, the calorific value due to the gas, the calorific value due to the decomposition of hydrocarbons in the gas into carbon monoxide and hydrogen, the calorific value due to the decomposition of moisture, and the calorific value due to the decomposition of pulverized coal. The process for determining the operating state in the embodiment shown in FIG. 1 includes step S610 and step S620. The detailed description is as follows.

[0058] Step S610 determines the theoretical combustion temperature based on the calorific value released by the combustion of coke in front of the tuyere, the calorific value released by the combustion of pulverized coal in front of the tuyere, the physical calorific value when the coke enters the combustion zone, the calorific value due to the blast, the calorific value due to the gas, the calorific value due to the decomposition of hydrocarbon substances in the gas into carbon monoxide and hydrogen, the calorific value due to moisture decomposition, the calorific value due to pulverized coal decomposition, the gas volume formed by the combustion of the fuel in front of the tuyere, and the average specific heat capacity of the real-time circulating gas. Exemplarily, the theoretical combustion temperature is determined according to calculation formula (II).

[0059]

Number

[0060] Among them, TF is the theoretical combustion temperature, and the unit is K. Q Cコークス is the calorific value released by the combustion of coke in front of the tuyere, and the unit is J / t. Q C微粉炭 is the calorific value released by the combustion of pulverized coal in front of the tuyere, and the unit is kJ / t. Q コークス is the physical heat brought in when the coke enters the combustion zone, and the unit is J. Q 送風 is the calorific value brought in by the blast, and the unit is kJ / t. Q ガス is the calorific value of the gas brought in, and the unit is kJ / t. Q ガス分解kJ / t is the amount of heat released when hydrocarbon substances in a gas decompose into carbon monoxide and hydrogen. 水分解 This is the amount of heat consumed by the decomposition of water (i.e., the total amount of heat consumed by the decomposition of water contained in the raw material), and its unit is kJ / t. Q 微粉炭分解 This represents the amount of heat consumed in the decomposition of pulverized coal, and its unit is kJ / t. ガス This is the amount of gas (in this case, volume) formed by the combustion and decomposition of fuel in front of the air vent, and is measured in units of m. 3 / t. C ガス This represents the average specific heat capacity (volume specific heat capacity in this case) of the real-time circulating gas, and its unit is kJ / m³. 3 / K.

[0061] Step S620 determines the operating conditions based on the theoretical combustion temperature, replacement ratio, and real-time production indicators.

[0062] Please refer to Figure 7. Figure 7 is a flowchart of an exemplary embodiment that determines the operating state in the embodiment shown in Figure 6.

[0063] As shown in Figure 7, and in exemplary embodiments of the application, the process for determining the operating state in the embodiment shown in Figure 6 includes steps S710 to S750. A detailed description is as follows.

[0064] Step S710 determines the operating state to be stable if the theoretical combustion temperature is above a preset lower temperature threshold and below a preset upper temperature threshold, the replacement ratio is above a preset replacement ratio threshold, and the real-time production index is above a preset production index threshold. Specifically, the operating state is determined to be stable when the theoretical combustion temperature is greater than a preset lower temperature threshold and less than a preset upper temperature threshold, the replacement ratio is greater than or equal to a preset replacement ratio threshold, and the real-time production indicator is greater than or equal to a preset production indicator threshold (i.e., each real-time production indicator is greater than or equal to the corresponding preset production indicator threshold).

[0065] Step S720 determines that the operating condition is unstable if the theoretical combustion temperature is lower than a preset lower temperature threshold.

[0066] Step S730 determines that the operating state is unstable if the theoretical combustion temperature is greater than a preset upper temperature threshold.

[0067] The Step S740 determines the operating state to be unstable if the exchange ratio is smaller than a preset replacement ratio threshold.

[0068] Step S750 determines the operating condition to be unstable if the real-time production indicator is lower than a preset production indicator threshold. Specifically, if one of the real-time production indicators is lower than the corresponding preset production indicator threshold, the operating condition is determined to be unstable.

[0069] Please refer to Figure 8. Figure 8 is a flowchart of the production method for a stable carbon cycle blast furnace according to one embodiment.

[0070] As shown in Figure 8, the procedure for the production and manufacturing method of a stable carbon cycle blast furnace is as follows.

[0071] The types of circulating gas produced in the blast furnace, the real-time amount of circulating gas, the real-time content of each component in the circulating gas, and the real-time average specific heat capacity of the circulating gas are obtained. The types of circulating gas include coke oven gas, converter gas, and blast furnace gas. Of these, the real-time average specific heat capacity of the circulating gas is obtained by adding the product of the real-time content of each component in the real-time circulating gas and the specific heat capacity of the corresponding component.

[0072] Based on the real-time amount of circulating gas corresponding to adjacent time points, the circulating gas fluctuation is determined. Specifically, the circulating gas fluctuation is obtained by subtracting the real-time amount of circulating gas corresponding to the adjacent previous time point from the real-time amount of circulating gas corresponding to the adjacent next time point. Based on the real-time content of each component in the circulating gas, the real-time calorific value of the circulating gas is determined according to formula (I).

[0073]

number

[0074] Among them, Q ガス This represents the real-time calorific value of the circulating gas, and its unit is kJ / Nm 3 . ω CO ω is the volume fraction of carbon monoxide gas in the circulating gas. H2 ω is the volume fraction of hydrogen in the circulating gas. CH4 This is the volume fraction of methane in the circulating gas.

[0075] Based on the real-time calorific value of the circulating gas corresponding to adjacent time points, the calorific value fluctuation is determined. Specifically, the calorific value fluctuation is obtained by subtracting the real-time calorific value of the circulating gas corresponding to the adjacent previous time point from the real-time calorific value of the circulating gas corresponding to the adjacent subsequent time point.

[0076] The adjustment method is determined based on the type of circulating gas, the amount of fluctuation in the circulating gas, and the amount of fluctuation in calorific value. Specifically, it is as follows:

[0077] The initial setting for the amount of pulverized coal injected is increased at 1.5 kg / thm, the initial setting for the coke ratio is increased at 2.5 kg / thm, the initial setting for the coke ratio is increased at 2.5 kg / thm, and the initial setting for the oxygen airflow is 10 Nm³. 3 Increase the oxygen airflow rate with / thm, i.e., increase the oxygen airflow rate to 10Nm 3 The range will be increased by / thm and finalized as a method for adjusting blast furnace production conditions.

[0078] The amount of fluctuation in the circulating gas is 10 Nm, which is a preset threshold for gas volume fluctuation. 3 Less than / thm, i.e., the circulating gas volume is 10Nm³ 3If the flow rate decreases by 1 kg / thm, the type of circulating gas is converter gas, the amount of pulverized coal injected is increased by the preset second injection rate of 1 kg / thm, i.e., the amount of pulverized coal injected is increased by 1 kg / thm, and the coke ratio is increased according to the preset second coke ratio of 1.8 kg / thm, i.e., the coke ratio is increased in a range of 1.8 kg / thm, and the preset second oxygen supply rate is 10 Nm 3 Increase the oxygen supply rate according to / thm, i.e., increase the oxygen supply rate to 10 Nm 3 Increase the range by / thm to determine the method for adjusting the blast furnace production conditions.

[0079] The amount of fluctuation in the circulating gas is 10 Nm, which is a preset threshold for gas volume fluctuation. 3 / thm or less, i.e., circulating gas volume of 10 Nm³ 3 If the flow rate decreases by / thm, the circulating gas type is blast furnace gas. The amount of pulverized coal injected is increased at a preset third injection rate of 0.9 kg / thm, the amount of pulverized coal injected is increased in increments of 0.9 kg / thm, the coke ratio is increased at a preset third coke ratio of 1.3 kg / thm, the coke ratio is increased in increments of 1.3 kg / thm, and the third oxygen airflow rate is set to 10 Nm. 3 By using / thm, the oxygen airflow rate is increased, i.e., the oxygen airflow rate is increased to 10 Nm 3 The width of / thm is increased and determined as a method for adjusting blast furnace production conditions.

[0080] The amount of fluctuation in the circulating gas is 10 Nm, which is a preset threshold for gas volume fluctuation. 3 / thm or less, i.e., circulating gas volume of 10 Nm³ 3 If the flow rate decreases by / thm, the circulating gas type is blast furnace gas. The amount of pulverized coal injected is increased at a preset third injection rate of 0.9 kg / thm, the amount of pulverized coal injected is increased in increments of 0.9 kg / thm, the coke ratio is increased at a preset third coke ratio of 1.3 kg / thm, the coke ratio is increased in increments of 1.3 kg / thm, and the third oxygen airflow rate is set to 10 Nm. 3 By using / thm, the oxygen airflow rate is increased, i.e., the oxygen airflow rate is increased to 10 Nm 3 The width of / thm is increased and determined as a method for adjusting blast furnace production conditions.

[0081] The amount of fluctuation in the circulating gas is 10 Nm, which is a preset threshold for gas volume fluctuation. 3 The pressure is greater than / thm, and the type of circulating gas is coke oven gas. The amount of pulverized coal injected is reduced by a preset fifth injection rate of 1.2 kg / thm. The coke ratio is reduced according to a preset fifth to coke ratio of 1 kg / thm, i.e., the coke ratio is reduced in increments of 1 kg / thm. The preset fourth oxygen airflow rate is 10 Nm 3 Reduce the oxygen airflow rate according to / thm, i.e., increase the oxygen airflow rate to 10Nm 3 The value is reduced by a range of / thm and this is established as the method for adjusting blast furnace production conditions.

[0082] The amount of fluctuation in the circulating gas is 10 Nm, which is a preset threshold for gas volume fluctuation. 3 A value greater than / thm, i.e., a circulating gas volume of 10Nm³ 3 If you increase the amount by / thm, the type of circulating gas will be converter gas. Reduce the amount of pulverized coal injected by a preset sixth injection rate of 1 kg / thm. Reduce the amount of pulverized coal injected in increments of 0.8 kg / thm, reduce the coke ratio by a preset sixth coke ratio of 0.8 kg / thm, and reduce the coke ratio in increments of 1 kg / thm. Preset sixth oxygen airflow rate of 10 Nm 3 Therefore, reduce the oxygen airflow rate, i.e., reduce the oxygen airflow rate to 10 Nm 3 The amount will be reduced by the / thm range and finalized as the adjustment method for blast furnace production conditions.

[0083] The amount of fluctuation in the circulating gas is 10 Nm, which is a preset threshold for gas volume fluctuation. 3 A value greater than / thm, i.e., a circulating gas volume of 10Nm³ 3 If you increase it by / thm, the type of circulating gas is blast furnace gas, and you reduce the amount of pulverized coal injected at a preset seventh injection rate of 0.9 kg / thm. Reduce the amount of pulverized coal injected in increments of 0.9 kg / thm, reduce the coke ratio at a preset seventh coke ratio of 0.7 kg / thm, and reduce the coke ratio in increments of 0.7 kg / thm. Preset seventh oxygen airflow rate of 10 Nm 3 Therefore, the oxygen airflow rate is reduced, i.e., the oxygen airflow rate is reduced to 10 Nm 3The value is reduced by the / thm range and finalized as the adjustment method for blast furnace production conditions.

[0084] The amount of variation in heat generation is set to a predetermined threshold of 100 kJ / Nm 3 If the value is greater, the amount of pulverized coal ejected is reduced by a preset fourth ejection rate of 0.1 kg / thm. The coke ratio is reduced by a preset fourth coke ratio of 0.1 kg / thm, i.e., the coke ratio is reduced by a range of 0.1 kg / thm, and this is determined as the adjustment method for blast furnace production conditions.

[0085] The amount of variation in heat generation is set to a predetermined threshold of 100 kJ / Nm 3 If the value is smaller, increase the injection rate of pulverized coal by a preset eighth injection rate of 0.1 kg / thm, i.e., increase the injection rate of pulverized coal in increments of 0.1 kg / thm. Increase the coke ratio by a preset eighth coke ratio of 0.1 kg / thm, i.e., increase the coke ratio in increments of 0.1 kg / thm, and this is determined as the adjustment method for blast furnace production conditions.

[0086] When the circulating gas and calorific value fluctuate simultaneously, the adjustment method for the amount of pulverized coal injected and the coke ratio can be superimposed using the adjustment ranges for each when the circulating gas and calorific value fluctuate separately. For example, if the fluctuation amount of the circulating gas is a predetermined threshold of 10 Nm³ for the fluctuation of the gas volume. 3 Greater than / thm, i.e., the circulating gas volume is 10 Nm 3 If the amount is increased by / thm, the fluctuation in calorific value will be greater than the preset threshold for calorific value fluctuation of 100kJ / Nm3, and the type of circulating gas is blast furnace gas. The amount of pulverized coal injected is reduced by a preset seventh injection amount of 0.9kg / thm + a fourth injection amount of 0.1kg / thm, reducing the amount of pulverized coal injected by a range of 0.9kg / thm + 0.1kg / thm = 1.0kg / thm, and the coke ratio is reduced according to the preset seventh coke ratio of 0.7kg / thm + the coke ratio is reduced according to the preset fourth coke ratio of 0.1kg / thm. That is, the coke ratio is reduced by a range of 0.7kg / thm + 0.1kg / thm = 0.8kg / thm, and this becomes the method for adjusting the amount of pulverized coal injected and the coke ratio.

[0087] The production conditions of the blast furnace are adjusted according to the adjustment method, and production is carried out according to the adjusted production conditions of the blast furnace.

[0088] Real-time production volume, real-time production indicators, circulating gas replacement ratio, calorific value data, and gas volume from fuel combustion before the air vent are acquired under the adjusted blast furnace production conditions. Of these, the calorific value data includes the heat from coke combustion before the air vent, the heat from pulverized coal combustion before the air vent, the physical heat when coke enters the combustion zone, the heat from air supply, the heat from gas, the heat from the decomposition of hydrocarbons in the gas into carbon monoxide and hydrogen, the heat from the decomposition of water, and the heat from the decomposition of pulverized coal. The real-time production indicators include molten iron production volume, blast furnace utilization coefficient (i.e., blast furnace effective volume utilization coefficient), energy consumption, and overall fuel ratio.

[0089] The heat generated by the combustion of coke in front of the air vent, the heat generated by the combustion of pulverized coal in front of the air vent, the physical heat when the coke enters the combustion zone, the heat generated by the airflow, the heat generated by the gas, the heat generated by the decomposition of hydrocarbons in the gas into carbon monoxide and hydrogen, the heat generated by the decomposition of water, the heat generated by the decomposition of pulverized coal, and the theoretical combustion temperature are determined by formula (II) from the volume of gas formed by the combustion of fuel in front of the air vent and the average specific heat capacity of the gas circulating in real time.

[0090]

number

[0091] Among them, TF is the theoretical combustion temperature, and its unit is K. Q Cコークス Q is the amount of heat released by the combustion of coke in front of the air vent, and its unit is J / t. C微粉炭 This represents the amount of heat released by the combustion of pulverized coal in front of the air vent, and its unit is kJ / t. Q コークス Q is the physical heat introduced when coke enters the combustion zone, and its unit is J. 送風 This is the amount of heat brought in by the airflow, and its unit is kJ / t. Q ガス This represents the calorific value of the gas brought in, and its unit is kJ / t. Q ガス分解kJ / t is the amount of heat released when hydrocarbon substances in a gas decompose into carbon monoxide and hydrogen. 水分解 This is the amount of heat consumed by the decomposition of water (i.e., the total amount of heat consumed by the decomposition of water contained in the raw material), and its unit is kJ / t. Q 微粉炭分解 This represents the amount of heat consumed in the decomposition of pulverized coal, and its unit is kJ / t. ガス This is the amount of gas (in this case, volume) formed by the combustion and decomposition of fuel in front of the air vent, and is measured in units of m. 3 / t. C ガス This represents the average specific heat capacity (volume specific heat capacity in this case) of the real-time circulating gas, and its unit is kJ / m³. 3 / K.

[0092] The operating conditions are determined based on theoretical combustion temperature, replacement ratio, and real-time production indicators.

[0093] The theoretical combustion temperature is equal to or greater than the preset lower temperature threshold of 2373K (2100℃), and less than the preset upper temperature threshold of 2673K (2300℃). The redundancy ratio is set to the preset redundancy ratio threshold (the preset substitution ratio thresholds corresponding to coke oven gas, converter gas, and blast furnace gas are 0.4 kg / Nm (TF)). 3 28 kg / Nm 3 and 0.22 kg / Nm 3 The real-time production indicator is equal to or greater than the predetermined production indicator threshold, and the operating status is confirmed to be stable.

[0094] Specifically, the operating state is determined to be stable when the theoretical combustion temperature is greater than a preset lower temperature threshold and less than a preset upper temperature threshold, the replacement ratio is greater than or equal to a preset replacement ratio threshold, and the real-time production indicator is greater than or equal to a preset production indicator threshold (i.e., each real-time production indicator is greater than or equal to the corresponding preset production indicator threshold).

[0095] If the theoretical combustion temperature is lower than the preset lower temperature threshold of 2373K (i.e., 2100°C), the operating condition is judged to be unstable. If the theoretical combustion temperature exceeds the preset upper temperature threshold of 2673K (i.e., 2300°C), the operating condition is judged to be unstable.

[0096] The replacement ratio has a preset replacement ratio threshold (the preset replacement ratio thresholds for coke oven gas, converter gas, and blast furnace gas are 0.4 kg / Nm (TF)). 3 28 kg / Nm 3 and 0.22 kg / Nm 3 If the value is smaller than this, the operating condition is judged to be unstable.

[0097] If a real-time production indicator is smaller than a preset production indicator threshold, specifically if one of the real-time production indicators is smaller than the corresponding preset production indicator threshold, the operating status is determined to be unstable.

[0098] If the operating conditions are not stable, adjust the blast furnace production conditions according to the adjustment procedure and repeatedly confirm the operating conditions until they stabilize.

[0099] Please refer to Figure 9. Figure 9 is a drawing of the M900 production control system for a stable carbon cycle blast furnace according to an exemplary embodiment of the present application.

[0100] As shown in Figure 9, the production control system M900 for the stable carbon cycle blast furnace of this invention includes the following:

[0101] The first collection module M910 acquires the type of circulating gas produced in the blast furnace, the real-time amount of circulating gas, the real-time content of each component in the circulating gas, and the real-time average specific heat capacity of the circulating gas.

[0102] The first confirmation module M920 determines the adjustment method according to the real-time amount of circulating gas, the real-time content of each component of the circulating gas, and the type of circulating gas.

[0103] The M930 processing module adjusts the blast furnace production conditions according to the adjustment method and performs production according to the adjusted blast furnace production conditions.

[0104] The second collection module M940 acquires real-time production volume, real-time production indicators, circulating gas replacement ratio, calorific value data, and gas volume formed by fuel combustion in front of the wind outlet, all produced under adjusted blast furnace production conditions.

[0105] The second determinative module M950 is used to determine the operating status based on thermal data, the amount of gas formed by fuel combustion in front of the air vent, the replacement ratio, and real-time production indicators, and the operating status includes stable and unstable.

[0106] If the operating state of the third confirmation module M960 is unstable, it will repeatedly adjust according to the adjustment method and confirm the operating state until it stabilizes.

[0107] It should be explained that the production control system for stabilizing a carbon cycle blast furnace provided in the above embodiment is based on the same concept as the production control method for a stable carbon cycle blast furnace provided in the above embodiment. The specific methods by which each module and unit performs its operation are described in detail in the embodiments of the method and will not be described here. In actual applications, the production control system for stabilizing a carbon cycle blast furnace provided in the above embodiment can be completed by dividing the above functions among different functional modules as needed. That is, the internal structure of the device can be divided into different functional modules to complete all or part of the above functions, but is not limited to this.

[0108] Embodiments of this application provide an electronic device including one or more processors. The storage device can store one or more programs, which are executed by the processors, thereby providing a production control method for a stable carbon cycle blast furnace in each of the embodiments.

[0109] Figure 10 shows the configuration of a computer system suitable for realizing the electronic device of the embodiment of this application. The computer system 1000 of the electronic equipment shown in Figure 10 is merely an example and does not limit the functions or scope of use of the embodiment of this application in any way.

[0110] As shown in Figure 10, the computer system 1000 includes a Central Processing Unit (CPU) 1001. Programs stored in Read-Only Memory (ROM) 1002, or access to Random Access Memory (RAM) 1003 from the storage unit 1008, are used for various operations and processes. Various programs and data necessary for the system's operation are also stored in RAM 1003. The CPU 1001, ROM 1002, and RAM 1003 are interconnected by a bus 1004. An Input / Output (I / O) interface 1005 is also connected to the bus 1004.

[0111] The following components are connected to the I / O interface 1005 and include an input unit 1006 consisting of a keyboard, mouse, etc. The output unit 907 consists of a CRT (Cathode Ray Tube), LCD (Liquid Crystal Display), speaker, etc. It is composed of a hard disk storage unit 1008, etc. The communication unit 1009 includes a network interface card such as a LAN (Local Area Network) card or modem. The drive 1010 is equipped with removable media 1011 such as a magnetic disk, optical disk, magneto-optical disk, or semiconductor memory, and computer programs read from there are installed in the storage unit 1008 as needed.

[0112] In particular, according to embodiments of this application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, embodiments of this application include a computer program. The computer program may be downloaded and installed on a network from the communication unit 1009, or it may be installed from 911. When executed by the central processing unit (CPU) 1001, this computer program performs various functions defined in the system of this application.

[0113] The computer-readable mediums shown in the embodiments of this application may be computer-readable signaling media or computer-readable storage media, or any combination thereof. Computer-readable storage media may be, for example, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any combination thereof. More specific examples of computer-readable storage media may include electrical connections having one or more wires, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fibers, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, computer-readable signaling media may include data signals propagated in the baseband or as part of a carrier wave, in which computer-readable computer programs are carried. Such propagated data signals may take various forms, including, but not limited to, electromagnetic signals, optical signals, or any combination thereof. Computer-readable signaling media can also be any computer-readable medium other than computer-readable storage media on which programs for use by or in connection with instruction execution systems, apparatus, or devices can be transmitted, propagated, or transmitted. Computer programs contained on computer-readable media can be transmitted by wireless, wired, or any suitable combination thereof, including but not limited to these.

[0114] The attached flowcharts and frame diagrams illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Here, each frame in the flowchart or diagram contains one or more executable instructions for realizing a given logical function. It may represent a module, segment, or portion of code. There may also be several alternative implementations, functions shown within blocks, and orders different from those shown in the diagram. For example, two consecutively shown frames may actually be executed substantially in parallel, or in reverse order depending on the related functions. Furthermore, each frame in the frame diagram or flowchart, and combinations of frames in the frame diagram or flowchart, may be implemented by a dedicated hardware-based system that performs a specified function or operation, or by a combination of dedicated hardware and computer instructions.

[0115] The units described in the embodiments of this application may be implemented by software or by hardware, and the described units may be provided on a processor. However, the names of these units do not in any case constitute a limitation on the units themselves.

[0116] This application provides another computer-readable storage medium on which a computer program is stored. When executed by a processor, for example, the production control method for the stable carbon cycle blast furnace described above can be performed. This computer-readable storage medium may be built into the electronic equipment described above, or it may exist independently without being built into the electronic equipment.

[0117] This application provides another computer program product or computer program. This program includes computer instructions. These instructions are stored on a readable storage medium. A computer processor reads the instructions and causes it to execute a production control method for a stable carbon cycle blast furnace.

[0118] The above embodiments are merely illustrative of the principle and effects of the present invention and are not intended to limit the present invention. Any practitioner in the art can modify or alter the above embodiments without contradicting the spirit and scope of the present invention. Accordingly, all equivalent modifications or alterations described in the claims of the present invention can be made without contradicting the spirit and technical idea of ​​the present invention.

Claims

1. This is a production control method for stabilizing a single type of carbon-cycle blast furnace. This production control method includes the following: The type of circulating gas produced in the blast furnace, the real-time amount of circulating gas, the real-time content of each component in the circulating gas, and the real-time average specific heat capacity of the circulating gas are obtained. The adjustment method is determined based on the real-time circulating gas volume, the real-time content of each component in the circulating gas, and the type of circulating gas. The production conditions of the blast furnace are adjusted according to the adjustment method, and production is carried out according to the adjusted production conditions of the blast furnace. Production is carried out according to the adjusted blast furnace production conditions, and real-time production volume, real-time production indicators, circulating gas exchange ratio, calorific value data, and gas volume formed by the combustion of fuel in front of the wind port are obtained according to the adjusted blast furnace production conditions. The operating status is determined based on heat data, the amount of gas formed by the combustion of fuel in front of the air intake, the exchange ratio, and real-time production indicators. The operating status includes stable and unstable conditions. If the operating status is unstable, repeatedly adjust it according to the adjustment method until it stabilizes, and repeatedly check the operating status.

2. To stabilize the production control method for a carbon cycle blast furnace as described in claim 1. Its characteristic feature is to determine the adjustment method. It includes the following: The amount of fluctuation in the circulating gas is determined based on the real-time amount of circulating gas corresponding to adjacent time periods. The thermal fluctuations are determined based on the real-time content of each component in the circulating gas. The adjustment method is determined based on the type of circulating gas, the amount of fluctuation in the circulating gas, and the fluctuation in heat.

3. To stabilize the production control method for a carbon cycle blast furnace as described in claim 2. Its characteristic feature is that it determines the fluctuation of heat. It includes the following: The real-time heat of the circulating gas is determined based on the real-time content of each component in the circulating gas. The amount of heat fluctuation is determined based on the real-time heat of the circulating gas corresponding to adjacent time periods.

4. The production control method for a carbon cycle blast furnace as described in claim 3 is stabilized. Its features include that the types of gases described include coke oven gas, converter gas, and blast furnace gas, and that the adjustment method is determined. It includes the following: If the fluctuation amount of the circulating gas is smaller than a preset threshold for gas quantity fluctuation, the type of circulating gas is coke oven gas, and the method for adjusting the blast furnace production conditions is determined by increasing the amount of pulverized coal injected according to a preset first injection amount, increasing the coke ratio according to a preset first coke ratio, and increasing the oxygen supply amount according to a preset first oxygen supply amount. If the fluctuation amount of the circulating gas is smaller than a preset threshold for gas quantity fluctuation, the type of circulating gas is converter gas, and the method for adjusting the blast furnace production conditions is determined by increasing the amount of pulverized coal injected according to a preset second injection amount, increasing the coke ratio according to a preset second coke ratio, and increasing the oxygen supply amount according to a preset second oxygen supply amount. If the fluctuation amount of the circulating gas is smaller than a preset threshold for gas quantity fluctuation, the type of circulating gas is blast furnace gas, and the method for adjusting the blast furnace production conditions is determined by increasing the amount of pulverized coal injected according to a preset third injection amount, increasing the coke ratio according to a preset third coke ratio, and increasing the oxygen supply amount according to a preset third oxygen supply amount. If the fluctuation in the circulating gas is greater than a preset threshold for gas volume fluctuation, the amount of pulverized coal injected is reduced according to a preset fourth injection amount, and the coke ratio is reduced according to a preset fourth coke ratio, thereby determining the method for adjusting the blast furnace production conditions.

5. To stabilize the production control method for a carbon cycle blast furnace as described in claim 4. Its characteristic feature is to determine the adjustment method. It includes the following: If the fluctuation amount of the circulating gas is greater than a preset threshold for gas quantity fluctuation, the type of circulating gas is coke oven gas, and the method for adjusting the blast furnace production conditions is determined by reducing the amount of pulverized coal injected according to a preset fifth injection amount, reducing the coke ratio according to a preset fifth coke ratio, and reducing the oxygen supply amount according to a preset fourth oxygen supply amount. If the fluctuation amount of the circulating gas is greater than a preset threshold for gas quantity fluctuation, the type of circulating gas is converter gas, and the method for adjusting the blast furnace production conditions is determined by reducing the amount of pulverized coal injected according to a preset sixth injection amount, reducing the coke ratio according to a preset sixth coke ratio, and reducing the oxygen supply amount according to a preset fifth oxygen supply amount. If the fluctuation amount of the circulating gas is greater than a preset threshold for gas quantity fluctuation, the type of circulating gas is blast furnace gas, and the method for adjusting the blast furnace production conditions is determined by reducing the amount of pulverized coal injected according to a preset seventh injection amount, reducing the coke ratio according to a preset seventh coke ratio, and reducing the oxygen supply amount according to a preset sixth oxygen supply amount. If the thermal fluctuation is smaller than a predetermined thermal fluctuation threshold, the method for adjusting the blast furnace production conditions is determined by increasing the amount of pulverized coal injected according to a predetermined eighth injection amount, and increasing the coke ratio according to a predetermined eighth coke ratio.

6. The production control method for the carbon cycle blast furnace described in claim 1 is stabilized. Its features include determining the operating state based on the heat data, which includes the amount of heat released by coke combustion in front of the air vent, the amount of heat released by pulverized coal combustion in front of the air vent, the amount of heat brought in by the gas, the amount of heat released by the decomposition of hydrocarbon substances in the gas into carbon monoxide and hydrogen, the physical heat when coke enters the combustion zone, the amount of heat brought in by the air supply, the amount of heat consumed by the decomposition of moisture, and the amount of heat consumed by the decomposition of pulverized coal. The following is included. The theoretical combustion temperature is determined by the amount of heat released from the combustion of coke in front of the air vent, the amount of heat released from the combustion of pulverized coal in front of the air vent, the amount of heat brought in by the gas, the amount of heat released from the decomposition of hydrocarbon substances in the gas into carbon monoxide and hydrogen, the physical heat when the coke enters the combustion zone, the amount of heat brought in by the airflow, the amount of heat consumed by the decomposition of water and the decomposition of pulverized coal, the volume of gas formed by the combustion of fuel in front of the air vent, and the average specific heat capacity of the real-time circulating gas.

7. To stabilize the production control method for a carbon cycle blast furnace as described in claim 6. Its characteristic is to determine the operating state. It includes the following: If the theoretical combustion temperature is equal to or greater than a preset lower temperature threshold, and equal to or less than a preset upper temperature threshold, and the redemption ratio is equal to or greater than a preset redemption ratio threshold, and the real-time production index is equal to or greater than a preset production index threshold, then the operating state is determined to be stable. If the theoretical combustion temperature is lower than a preset lower temperature threshold, the operating state is determined to be unstable. If the theoretical combustion temperature exceeds a preset upper temperature threshold, the operating state is determined to be unstable. If the exchange ratio is less than a preset exchange ratio threshold, the operating state is determined to be unstable. If the real-time production indicator is lower than a pre-set production indicator threshold, the operating status is determined to be unstable.

8. This is a system for stabilizing production control of a single type of carbon cycle blast furnace. Its features include the following elements within the aforementioned production control system. This is the first data collection module. It acquires the type of circulating gas produced by the blast furnace, the real-time amount of circulating gas, the real-time content of each component of the circulating gas, and the real-time average specific heat capacity of the circulating gas. This is the first definitive module. The adjustment method is determined according to the real-time amount of circulating gas, the real-time content of each component of the circulating gas, and the type of circulating gas. This is a processing module. Depending on the adjustment method, it adjusts the production conditions of the blast furnace and produces according to the adjusted production conditions of the blast furnace. This is the second data collection module. It acquires real-time production volume, real-time production indicators, circulating gas exchange ratio, calorific value data, and gas volume formed by fuel combustion in front of the wind outlet, all under the adjusted blast furnace production conditions. This is the second definitive module. It determines the operating state based on heat data, the amount of gas formed by fuel combustion in front of the air vent, the exchange ratio, and real-time production indicators. The operating state includes stable and unstable conditions. This is the third confirmation module. If the operating status is unstable, the system will repeatedly adjust according to the adjustment method until the operating status stabilizes, and the operating status will be repeatedly confirmed.

9. One type of electronic equipment, its characteristics are as follows: The aforementioned electronic equipment includes the following: It is one or more processors. A storage device stores one or more programs. When the one or more programs described above are executed by one or more processors, the electronic equipment described above is the production control method for a stable circulation blast furnace according to any one of claims 1 to 7.

10. It is a medium on which one type of computer program can be read. Its characteristic feature is that a computer program is stored on it. When the aforementioned computer program is executed by a processor, the computer executes a production control method for a stable carbon cycle blast furnace as described in any one of claims 1 to 7.

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