Method, device and equipment for monitoring carbon emission of steel rolling heating furnace and medium

Abstract

The invention discloses a steel rolling heating furnace carbon emission monitoring method, device and equipment and a medium. The method comprises the steps that the fuel consumption amount, the electric power consumption amount and the waste heat recovery amount of a steel rolling heating furnace are obtained; according to the fuel consumption and a preset combustion carbon emission factor, the fuel combustion carbon emission of the steel rolling heating furnace is obtained, according to the electric power consumption and a preset electric power carbon emission coefficient, the electric power consumption carbon emission of the steel rolling heating furnace is obtained, a waste heat recovery conversion coefficient is obtained, and according to the waste heat recovery amount and the waste heat recovery conversion coefficient, the fuel combustion carbon emission of the steel rolling heating furnace is obtained. The waste heat recovery converted quantity of the steel rolling heating furnace is obtained; and determining the total carbon emission of the steel rolling heating furnace according to the fuel combustion carbon emission, the power consumption carbon emission and the waste heat recovery conversion amount. According to the method, the real-time carbon emission of the steel rolling heating furnace can be obtained, so that the timeliness and the accuracy of a monitoring result are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of iron and steel metallurgy, and in particular to a method, device, equipment and medium for monitoring carbon emissions from a steel rolling heating furnace. Background Art

[0002] Against the backdrop of global climate change, reducing greenhouse gas emissions and promoting green and low-carbon development have become important issues of common concern to governments and the international community. As one of the main industrial sectors of energy consumption and carbon emissions, the steel industry accounts for a significant proportion of the world's total carbon emissions. Therefore, energy conservation and emission reduction in the steel industry are of great significance to achieving global climate goals. In the steel production process, the hot rolling process is one of the main links in energy consumption and carbon emissions. As a key equipment in the hot rolling process, the steel rolling heating furnace accounts for a large proportion of the entire hot rolling process in terms of energy consumption and carbon emissions. At present, steel rolling heating furnaces mainly use natural gas, coal gas and hydrogen as fuels. The combustion of these fuels will produce a large amount of greenhouse gases such as carbon dioxide, which has a serious impact on the environment.

[0003] In order to accurately grasp the carbon emissions of steel rolling heating furnaces, the actual measurement method is traditionally used to measure carbon emissions. The actual measurement method directly measures carbon emissions by continuously monitoring the concentration and flow rate of on-site flue gas emissions. However, this method has obvious limitations. First, the measurement results of the actual measurement method are affected by multiple factors such as the accuracy of the monitoring equipment and environmental conditions, and the error is large, which cannot accurately reflect the actual carbon emissions of the steel rolling heating furnace. This limits the decision-making ability of steel companies in new technology research and development and process optimization. Summary of the invention

[0004] The embodiments of the present application provide a method, device, equipment and medium for monitoring the carbon emissions of a steel rolling heating furnace. The method comprehensively considers multiple aspects such as fuel carbon emissions, electricity carbon emissions and waste heat recovery carbon emissions conversion to obtain the real-time carbon emissions of the steel rolling heating furnace to ensure the timeliness and accuracy of the monitoring results.

[0005] In a first aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0006] A method for monitoring carbon emissions from a steel rolling heating furnace comprises: obtaining the fuel consumption, electricity consumption and waste heat recovery of the steel rolling heating furnace; obtaining the carbon emissions from fuel combustion of the steel rolling heating furnace according to the fuel consumption and a preset combustion carbon emission factor, obtaining the carbon emissions from electricity consumption of the steel rolling heating furnace according to the electricity consumption and a preset electricity carbon emission factor, and obtaining a waste heat recovery conversion coefficient, obtaining the waste heat recovery conversion amount of the steel rolling heating furnace according to the waste heat recovery amount and the waste heat recovery conversion coefficient; determining the total carbon emissions of the steel rolling heating furnace according to the fuel combustion carbon emissions, the electricity consumption carbon emissions and the waste heat recovery conversion amount.

[0007] Preferably, obtaining the waste heat recovery conversion coefficient includes: monitoring the volume fraction of CO gas, the volume fraction of CO2 gas, the volume fraction of CH4 gas and the volume fraction of C n H m The volume fraction of the gas; according to the calorific value of CO gas, the calorific value of CH4 gas, C n H m The calorific value of the gas, the volume fraction of the CO gas, the volume fraction of the CO2 gas, the volume fraction of the CH4 gas, and the C n H m The volume fraction of the gas is used to obtain the waste heat recovery conversion coefficient of the steel rolling heating furnace.

[0008] Preferably, obtaining the waste heat recovery amount of the steel rolling heating furnace includes: obtaining the waste heat recovery amount of the exhaust gas from the steel rolling heating furnace, the waste heat recovery amount of the cooling water and the remaining waste heat recovery amount in the steel rolling heating furnace; obtaining the waste heat recovery amount of the steel rolling heating furnace according to the waste heat recovery amount of the exhaust gas, the waste heat recovery amount of the cooling water and the remaining waste heat recovery amount.

[0009] Preferably, obtaining the amount of waste heat recovery of the flue gas discharged from the steel rolling heating furnace includes: collecting the temperature of the flue gas discharged from the steel rolling heating furnace before waste heat recovery, the temperature of the flue gas discharged from the steel rolling heating furnace after waste heat recovery, and the flow rate of the flue gas; based on the temperature of the flue gas discharged from the steel rolling heating furnace before waste heat recovery, the temperature of the flue gas discharged from the furnace after waste heat recovery, the flow rate of the flue gas, and the specific heat capacity of the flue gas, obtaining the amount of waste heat recovery of the flue gas discharged from the steel rolling heating furnace.

[0010] Preferably, obtaining the waste heat recovery amount of the cooling water of the steel rolling heating furnace includes: collecting the temperature of the cooling water in the steel rolling heating furnace before heat exchange after leaving the furnace, the temperature of the cooling water after heat exchange after leaving the furnace, the flow rate of the cooling water, the temperature of the external steam, and the flow rate of the external steam; based on the temperature before heat exchange, the temperature after heat exchange, the flow rate of the cooling water, the temperature of the external steam, the flow rate of the external steam and the latent heat of vaporization of the cooling water, obtaining the waste heat recovery amount of the cooling water of the steel rolling heating furnace.

[0011] Preferably, the combustion carbon emission factor is determined according to the fuel type of the steel rolling heating furnace. The fuel type is natural gas, and the combustion carbon emission factor is 0.4479-0.55 kgCO2 / m 3 , or the fuel type is coal gas, and the combustion carbon emission factor is 0.65-0.85 kgCO2 / m 3 .

[0012] Preferably, after determining the total carbon emissions of the steel rolling heating furnace, the method further includes: displaying the total carbon emissions.

[0013] In a second aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0014] A carbon emission monitoring device for a steel rolling heating furnace, comprising:

[0015] An acquisition module is used to acquire the fuel consumption, power consumption and waste heat recovery of the steel rolling heating furnace;

[0016] A calculation module, used to obtain the carbon emission of fuel combustion of the steel rolling heating furnace according to the fuel consumption and the preset combustion carbon emission factor, obtain the carbon emission of electricity consumption of the steel rolling heating furnace according to the power consumption and the preset power carbon emission coefficient, and obtain the waste heat recovery conversion coefficient, and obtain the waste heat recovery conversion amount of the steel rolling heating furnace according to the waste heat recovery amount and the waste heat recovery conversion coefficient;

[0017] The determination module is used to determine the total carbon emissions of the steel rolling heating furnace based on the carbon emissions from fuel combustion, the carbon emissions from electricity consumption and the waste heat recovery conversion amount.

[0018] In a third aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0019] An electronic device comprises: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any one of the methods described in the first aspect are implemented.

[0020] In a fourth aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0021] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of any one of the methods described in the first aspect.

[0022] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0023] The carbon emission monitoring method of the steel rolling heating furnace provided by the embodiment of the present invention first obtains the fuel consumption, power consumption and waste heat recovery of the heating furnace, and then predicts the carbon emission of fuel combustion according to the real-time obtained fuel consumption to obtain the carbon emission of fuel combustion, and predicts the power consumption emission according to the real-time obtained power consumption to obtain the carbon emission of power consumption, and obtains the waste heat recovery conversion of the heating furnace according to the waste heat recovery. Based on the carbon emission of fuel combustion, the carbon emission of power consumption and the waste heat recovery conversion, the total carbon emission of the steel rolling heating furnace can be more accurately determined. This application adopts real-time monitoring of the operation status in the current steel rolling heating furnace, and predicts the total carbon emissions generated under the operation status according to the real-time data. Further, according to the total carbon emissions, the operation parameters of the steel rolling heating furnace can be adjusted, the production process can be optimized, and the energy utilization method can be improved to reduce carbon emissions and improve energy utilization efficiency. This method not only improves the accuracy of carbon emission calculation, but also can monitor the operation status of the steel rolling heating furnace in real time, providing a more accurate and timely carbon emission management method for steel enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 Flow chart of a method for monitoring carbon emissions from a steel rolling heating furnace in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of a method for displaying total carbon emissions in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of monitoring results of a steel rolling heating furnace according to an embodiment of the present invention;

[0028] Figure 4 Schematic diagram of the structure of a device for monitoring carbon emissions from a steel rolling heating furnace according to an embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the structure of an electronic device in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The embodiments of the present application provide a method, device, equipment and medium for monitoring the carbon emissions of a steel rolling heating furnace. The method comprehensively considers multiple aspects such as fuel carbon emissions, electricity carbon emissions and waste heat recovery carbon emissions conversion to obtain the real-time carbon emissions of the steel rolling heating furnace, thereby ensuring the timeliness and accuracy of the monitoring results.

[0031] The technical solution of the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0032] A method for monitoring carbon emissions from a steel rolling heating furnace comprises: obtaining the fuel consumption, electricity consumption and waste heat recovery of the steel rolling heating furnace; obtaining the carbon emissions from fuel combustion of the steel rolling heating furnace according to the fuel consumption and a preset combustion carbon emission factor, obtaining the carbon emissions from electricity consumption of the steel rolling heating furnace according to the electricity consumption and a preset electricity carbon emission coefficient, and obtaining a waste heat recovery conversion coefficient, and obtaining the waste heat recovery conversion amount of the steel rolling heating furnace according to the waste heat recovery amount and the waste heat recovery conversion coefficient; determining the total carbon emissions of the steel rolling heating furnace according to the fuel combustion carbon emissions, electricity consumption carbon emissions and waste heat recovery conversion amount.

[0033] 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.

[0034] In a first aspect, an embodiment of the present invention provides a method for monitoring carbon emissions from a steel rolling heating furnace. Specifically, Figure 1 As shown, the method includes the following steps S101 to S103:

[0035] Step S101, obtaining the fuel consumption, power consumption and waste heat recovery of the steel rolling heating furnace.

[0036] In the specific implementation process, sensors and monitoring equipment can be used to collect key data of the steel rolling heating furnace in real time during operation, including fuel consumption, fuel type and power consumption. For example, the fuel consumption can be determined based on the fuel usage of the heating furnace; the power consumption can be determined based on the power usage of the heating furnace.

[0037] It should be noted that the waste heat recovery refers to the recovery of heat generated during the operation of the steel rolling heating furnace.

[0038] In one embodiment, obtaining the waste heat recovery amount of the steel rolling heating furnace may include: obtaining the waste heat recovery amount of the flue gas discharged from the steel rolling heating furnace, the waste heat recovery amount of the cooling water, and the remaining waste heat recovery amount; obtaining the waste heat recovery amount of the steel rolling heating furnace according to the waste heat recovery amount of the flue gas discharged from the furnace, the waste heat recovery amount of the cooling water, and the remaining waste heat recovery amount. The remaining waste heat recovery amount is the waste heat recovery amount other than the flue gas waste heat and the cooling water waste heat in the steel rolling heating furnace, for example, it may be a small amount of hot air, etc.

[0039] In a specific embodiment, obtaining the waste heat recovery amount of the flue gas discharged from the steel rolling heating furnace can include: collecting the temperature of the flue gas discharged from the steel rolling heating furnace before waste heat recovery, the temperature of the flue gas discharged from the steel rolling heating furnace after waste heat recovery, and the flow rate of the flue gas; based on the temperature before waste heat recovery, the temperature after waste heat recovery, the flow rate of the flue gas, and the specific heat capacity of the flue gas, obtaining the waste heat recovery amount of the flue gas discharged from the steel rolling heating furnace.

[0040] Specifically, a flue gas component detection device and an audible and visual alarm device are installed at the tail flue of the steel rolling heating furnace to monitor the flue gas emission. The temperature of the flue gas discharged from the heating furnace can be collected in real time through the temperature sensor, and the temperature of the flue gas before and after waste heat recovery can be obtained, and the flow rate of the flue gas discharged from the heating furnace can be measured by the flow meter.

[0041] Based on the temperature of the flue gas before and after heat recovery, the flow rate of the flue gas and the specific heat capacity of the flue gas, the waste heat recovery amount of the flue gas from the steel rolling heating furnace is obtained, including: the mass of the flue gas is obtained according to the flow rate (i.e. volume) and density of the flue gas; based on the formula

[0042] Q 烟气 =Cp 烟气 ×m 烟气 ×(T1-T2)

[0043] The waste heat recovery of the flue gas from the steel rolling heating furnace is obtained, where Cp 烟气 is the specific heat capacity of the flue gas from the steel rolling heating furnace, unit is kJ / (kg·℃); m 烟气 is the mass of flue gas discharged from the steel rolling heating furnace, in kg; T1 is the temperature of the flue gas discharged from the steel rolling heating furnace before waste heat recovery, in °C; T2 is the temperature of the flue gas discharged from the steel rolling heating furnace after waste heat recovery, in °C. Among them, the specific heat capacity of the flue gas can be determined according to the flue gas temperature, and the density of the flue gas discharged from the furnace is a fixed value.

[0044] In a specific embodiment, obtaining the waste heat recovery amount of the cooling water of the steel rolling heating furnace can include: collecting the temperature of the cooling water before heat exchange after leaving the furnace, the temperature of the cooling water after heat exchange after leaving the furnace, the flow rate of the cooling water, the temperature of the external steam, and the flow rate of the external steam; based on the temperature before heat exchange, the temperature after heat exchange, the flow rate of the cooling water, the temperature of the external steam, the flow rate of the external steam and the latent heat of vaporization of the cooling water, the waste heat recovery amount of the cooling water of the steel rolling heating furnace is obtained.

[0045] Specifically, after the cooling water in the steel rolling heating furnace comes out of the furnace, it will be heat exchanged through the vaporization cooling device. The temperature of the cooling water when it enters the heating furnace (that is, the temperature before heat exchange), the temperature of the cooling water after it leaves the heating furnace (that is, the temperature after heat exchange), and the temperature of the external steam can be collected in real time through the temperature sensor. The flow rate of cooling water and the flow rate of external steam can be collected through the mass flow meter. Among them, the external steam is the steam generated by the evaporation of water in the vaporization cooling device, the temperature of the external steam is the temperature of the external steam of the heating furnace drum, the mass of the external steam is the weight of the external steam of the heating furnace drum, and the drum water replenishment amount is the mass of the cooling water.

[0046] Based on the temperature before the heat exchange, the temperature after the heat exchange, the flow rate of the cooling water, the temperature of the external steam, the flow rate of the external steam and the latent heat of vaporization of the cooling water, the waste heat recovery amount of the cooling water of the steel rolling heating furnace is obtained, including: obtaining the mass of the cooling water according to the flow rate (i.e., volume) of the cooling water and the density of the cooling water, and obtaining the mass of the external steam according to the flow rate (i.e., volume) of the external steam and the steam density; based on the formula

[0047] Q 冷却水 =Cp 水 ×m 水 ×(T3-T4)+Cp 蒸汽 ×m 蒸汽 ×(T5-100)+m 蒸汽

[0048] ×Q 潜热

[0049] Get the waste heat recovery of cooling water, where: Cp 水 is the specific heat capacity of cooling water, kJ / (kg·℃); m 水 is the mass of cooling water, kg; T3 is the temperature of cooling water before heat exchange after leaving the furnace, °C; T4 is the temperature of cooling water after heat exchange after leaving the furnace, °C; T5 is the temperature of the external steam, °C; m 蒸汽 is the quality of steam delivered, kg; Q 潜热 is the latent heat of vaporization of water, kJ / kg. The latent heat of vaporization of water is a set value, and the density of cooling water and the density of steam are both fixed values.

[0050] In a specific embodiment, the residual waste heat recovery amount in the steel rolling heating furnace can be a set compensation value, for example: the compensation value is 5% of the total chemical heat of the fuel supplied to the heating furnace (for example: the fuel consumption is x, the compensation value is x*5%).

[0051] According to the waste heat recovery amount of the flue gas, the waste heat recovery amount of the cooling water and the remaining waste heat recovery amount, the waste heat recovery amount of the steel rolling heating furnace is obtained, including: according to the formula

[0052] Q回收 =Q 烟气 +Q 冷却水 +Q 剩余

[0053] The waste heat recovery of the steel rolling heating furnace is obtained, where Q flue gas is the waste heat recovery of the flue gas discharged from the steel rolling heating furnace, kJ; Q 冷却水 is the waste heat recovery of cooling water in steel rolling heating furnace, kJ; Q 剩余 Waste heat recovered from other heat sources in steel rolling heating furnace, kJ.

[0054] Step S102, according to the fuel consumption and the preset combustion carbon emission factor, obtain the fuel combustion carbon emission of the steel rolling heating furnace, according to the power consumption and the preset power carbon emission coefficient, obtain the power consumption carbon emission of the steel rolling heating furnace, and the waste heat recovery conversion coefficient, according to the waste heat recovery amount and the waste heat recovery conversion coefficient, obtain the waste heat recovery conversion amount of the steel rolling heating furnace.

[0055] Furthermore, in order to improve the accuracy and reliability of the data, after obtaining the fuel consumption, electricity consumption and waste heat recovery of the steel rolling heating furnace, it can also include: cleaning, verifying and organizing the collected raw data, and automatically eliminating or correcting abnormal or erroneous data.

[0056] It should be noted that the fuel carbon emission factor reflects the carbon emissions generated by unit consumption of different fuels and is a key parameter for calculating carbon emissions. The combustion carbon emission factor can be determined based on the fuel type of the steel rolling heating furnace.

[0057] Specifically, the carbon emission factors of various fuels can be queried or calculated based on historical data, experimental data or industry standards. For example, the fuel type used in the steel rolling heating furnace is natural gas, and the combustion carbon emission factor is 0.4479-0.55kgCO2 / m 3 , or the fuel type is gas, the combustion carbon emission factor is 0.65~0.85kgCO2 / m 3 As another embodiment, the fuel type may also include fuel oil, and a corresponding combustion carbon emission factor of the fuel oil.

[0058] In a specific embodiment, the carbon emissions generated by fuel combustion are calculated based on the fuel consumption and a preset combustion carbon emission factor. The specific calculation formula is: fuel combustion carbon emissions = fuel consumption × combustion carbon emission factor.

[0059] Based on historical data or industry standards, the carbon emission coefficient of electricity consumption can be determined, which takes into account the energy consumption and emissions in the electricity production process. For example, the carbon emission coefficient of electricity can be between 0.5703 and 0.6237 tCO2 / MWh.

[0060] In a specific embodiment, the carbon emissions generated by the power consumption are calculated based on the power consumption and the power carbon emission coefficient. The specific calculation formula is: power consumption carbon emissions = power consumption × power carbon emission coefficient.

[0061] Considering the impact of waste heat recovery on carbon emissions, it is necessary to determine a conversion coefficient to reflect the conversion effect of waste heat recovery on carbon emissions. In a specific embodiment, the calculation steps of the waste heat recovery conversion coefficient may include: monitoring the volume fraction of CO gas, the volume fraction of CO2 gas, the volume fraction of CH4 gas and the volume fraction of C n H m The volume fraction of the gas; according to the calorific value of CO gas, the calorific value of CH4 gas, C n H m The calorific value of the gas, the volume fraction of CO gas, the volume fraction of CO2 gas, the volume fraction of CH4 gas, and C n H m The volume fraction of the gas is used to obtain the waste heat recovery conversion coefficient of the steel rolling heating furnace. Among them, installing a fuel flow and composition monitoring device in the steel rolling heating furnace can ensure real-time detection of flow and composition.

[0062] Specifically, the conversion coefficient calculation formula is as follows:

[0063]

[0064] Where 1.964 is the density of CO2, kg / m 3 ; CO2 is the volume fraction of CO2 in the steel rolling heating furnace fuel; CO is the volume fraction of CO in the steel rolling heating furnace fuel; Q CO is the calorific value of CO gas, kgce / m 3 ; CH4 is the volume fraction of CH4 in the steel rolling heating furnace fuel; Q CH4 is the calorific value of CH4 gas, kgce / m 3 ; C n H m C in the steel rolling heating furnace fuel n H m Volume fraction; Q CnHm C n H m Calorific value of gas, kgce / m 3 .

[0065] Among them, the calorific value of CO gas, the calorific value of CH4 gas and C n H mThe calorific value of the gas is a set value. In the embodiment, the volume concentration (ie, volume fraction) of CO, CO2, CH4, and CnHm gases can be measured using an NDIR non-spectral infrared sensor.

[0066] For example, when blast furnace gas is used as fuel, the conversion coefficient of waste heat recovery from heating furnace is between 2.21-2.82 kgCO2 / kgce. For example, in one application scenario, the conversion coefficient of waste heat recovery from heating furnace is 2.49 kgCO2 / kgce.

[0067] In a specific embodiment, the conversion effect of waste heat recovery on carbon emissions is calculated based on the waste heat recovery amount and the waste heat recovery carbon emission conversion coefficient collected in real time. The specific calculation formula is: waste heat recovery conversion amount = waste heat recovery amount × waste heat recovery carbon emission conversion coefficient. It should be noted that the waste heat recovery conversion amount here may be a positive value (increase carbon emissions) or a negative value (reduce carbon emissions), depending on the efficiency and method of waste heat recovery.

[0068] In other embodiments, the total gas flow rate of the heating furnace and the total air flow rate of the heating furnace can be obtained, and then the fuel carbon emission is calculated based on the total gas flow rate of the heating furnace and the total air flow rate of the heating furnace, or the fuel carbon emission is calculated by segmentation, that is, the gas flow rate of the first heating stage and the air flow rate of the first heating stage, the gas flow rate of the second heating stage and the air flow rate of the second heating stage, and the gas flow rate of the equalizing stage and the air flow rate of the equalizing stage are obtained, and then the fuel carbon emission is calculated based on the segmented gas flow rate and the segmented air flow rate. Among them, the gas flow rate and the air flow rate can be measured, and the amount of CO2 generated by the combustion of each cubic meter of fuel can be calculated according to the gas composition, and then multiplied by the total gas flow rate to obtain the combustion carbon emission.

[0069] Step S103, determining the total carbon emissions of the steel rolling heating furnace according to the carbon emissions from fuel combustion, the carbon emissions from electricity consumption and the waste heat recovery conversion amount.

[0070] In a specific embodiment, the carbon emissions from fuel combustion, carbon emissions from electricity consumption, and waste heat recovery conversion are summarized to obtain the real-time total carbon emissions of the steel rolling heating furnace. The specific calculation formula is: total carbon emissions = carbon emissions from fuel combustion + carbon emissions from electricity consumption + waste heat recovery conversion.

[0071] Furthermore, in order to more intuitively display the total carbon emissions of the steel rolling heating furnace and facilitate the user's horizontal and vertical comparison, after determining the total carbon emissions of the steel rolling heating furnace, it can also include: displaying the total carbon emissions.

[0072] like Figure 2As shown, the total carbon emissions can be displayed by using a graphical interface, trend and / or report. The graphical display method can include a bar chart, a line chart, etc., so as to more intuitively understand the changing trend of carbon emissions.

[0073] Specifically, by obtaining the fuel consumption, electricity consumption and waste heat recovery of the steel rolling heating furnace in the current time period, the total carbon emissions in the current time period are finally obtained, and the total carbon emissions in this time period are displayed. The total carbon emissions in the next time period are re-monitored to obtain the total carbon emissions in the next time period, and the total carbon emissions are updated and displayed.

[0074] For example, the time period can be 1 hour. Figure 3 As shown, the upper left shows the total carbon emissions within the current hour, the lower right shows the heating furnace energy efficiency within the current hour, the upper left shows the average carbon emissions per ton of steel, and the lower right shows the average energy consumption per ton of steel. In order to ensure that the steel rolling heating furnace is always in the best operating state and maintains the minimum total carbon emissions, the method also includes: comparing the calculated total carbon emissions with the set carbon emission target, and adjusting the operating parameters of the steel rolling heating furnace according to the comparison results.

[0075] As other embodiments, the method may include: comparing the total carbon emissions with the set carbon emission target, and evaluating the carbon emission control effect based on the comparison results, and adjusting the operating parameters of the steel rolling heating furnace or formulating an emission reduction strategy based on the evaluation results.

[0076] Specifically, if the total carbon emissions are higher than the carbon emission target, the heating furnace operating parameters are adjusted to reduce carbon emissions; if the total carbon emissions are lower than the carbon emission target, no adjustment is required. Based on the comparative analysis results of total carbon emissions and carbon emission targets, decision support is provided to steel companies. For example, the operating parameters of the steel rolling heating furnace can be adjusted, the production process can be optimized, and the energy utilization method can be improved to reduce carbon emissions and improve energy efficiency.

[0077] Furthermore, in order to predict the total carbon emissions as quickly as possible, after obtaining the fuel consumption, power consumption and waste heat recovery of the steel rolling heating furnace, it can also include: bringing the fuel consumption, power consumption and waste heat recovery into a pre-trained carbon emission detection model to obtain the predicted total carbon emissions, wherein the carbon emission detection model is trained based on historical fuel consumption, historical power consumption, historical waste heat recovery and historical total carbon emissions. And compare the predicted total carbon emissions with the obtained total carbon emissions, and then optimize the detection model.

[0078] This application predicts the carbon emissions of steel rolling heating furnaces based on historical data and machine learning algorithms, provides decision support for steel companies, and further improves the accuracy and real-time performance of carbon emissions calculations. It can not only monitor the carbon emissions generated by gas combustion under the existing low-carbon technology path, but also predict the carbon emissions generated by gas combustion in the newly designed low-carbon technology path through the carbon emissions detection model.

[0079] In a specific embodiment, the system can be optimized and upgraded according to the actual operation of the steel rolling heating furnace to improve the stability and calculation efficiency of the system. Through the above implementation process, the method can calculate the carbon emissions of the steel rolling heating furnace in real time and accurately, providing strong support for energy conservation and emission reduction of steel enterprises.

[0080] The carbon emission determination method proposed in this application is applicable to different types of steel rolling heating furnaces and different types of fuels, and has strong versatility and scalability. This method comprehensively considers multiple aspects such as fuel carbon emissions, electricity carbon emissions, and waste heat recovery carbon emissions conversion, thereby improving the accuracy of carbon emission calculations. Through real-time data collection and online calculations, the carbon emissions of steel rolling heating furnaces can be monitored in real time, providing steel companies with a more timely management tool. Compared with the method of directly measuring carbon emissions on site, the measurement results of the carbon emission monitoring method of this application are not easily affected by various factors such as the accuracy of the monitoring equipment and environmental conditions, avoiding the influence of results with large errors, and can more accurately reflect the actual carbon emissions of steel rolling heating furnaces. Therefore, it has the advantages of high accuracy, strong real-time performance, and wide application.

[0081] In summary, the carbon emissions monitoring method for a steel rolling heating furnace provided by an embodiment of the present invention not only takes into account the direct carbon emissions generated by fuel and electricity consumption, but also incorporates the conversion impact of energy-saving measures such as waste heat recovery on carbon emissions, thereby more comprehensively reflecting the carbon emissions of the steel rolling heating furnace. In addition, through real-time data drive, online monitoring and prediction of carbon emissions are realized, providing enterprises with more accurate and timely carbon emissions management means. The carbon emissions monitoring method for a steel rolling heating furnace has broad application prospects and can be used for carbon emissions monitoring, evaluation and emission reduction strategy formulation of steel enterprises, which will help promote enterprises to achieve green and low-carbon transformation and sustainable development.

[0082] In the second aspect, based on the same inventive concept, this embodiment provides a device for monitoring carbon emissions from a steel rolling heating furnace, such as Figure 4 As shown, including:

[0083] The acquisition module 401 is used to acquire the fuel consumption, power consumption and waste heat recovery of the steel rolling heating furnace;

[0084] The calculation module 402 is used to obtain the carbon emission of fuel combustion of the steel rolling heating furnace according to the fuel consumption and the preset combustion carbon emission factor, obtain the carbon emission of electricity consumption of the steel rolling heating furnace according to the power consumption and the preset power carbon emission coefficient, and obtain the waste heat recovery conversion coefficient, and obtain the waste heat recovery conversion amount of the steel rolling heating furnace according to the waste heat recovery amount and the waste heat recovery conversion coefficient;

[0085] The determination module 403 is used to determine the total carbon emissions of the steel rolling heating furnace based on the carbon emissions of the fuel combustion, the carbon emissions of the electricity consumption and the waste heat recovery conversion amount.

[0086] As an optional embodiment, obtaining the waste heat recovery conversion coefficient includes: monitoring the volume fraction of CO gas, the volume fraction of CO2 gas, the volume fraction of CH4 gas and the volume fraction of C n H m The volume fraction of the gas; according to the calorific value of CO gas, the calorific value of CH4 gas, C n H m The calorific value of the gas, the volume fraction of CO gas, the volume fraction of CO2 gas, the volume fraction of CH4 gas, and C n H m The volume fraction of the gas is used to obtain the waste heat recovery conversion coefficient of the steel rolling heating furnace.

[0087] As an optional embodiment, the acquisition module 401 includes:

[0088] The first acquisition submodule is used to obtain the waste heat recovery amount of the flue gas discharged from the steel rolling heating furnace, the waste heat recovery amount of the cooling water, and the remaining waste heat recovery amount in the steel rolling heating furnace;

[0089] The second acquisition submodule is used to obtain the waste heat recovery amount of the steel rolling heating furnace based on the waste heat recovery amount of the exhaust gas, the waste heat recovery amount of the cooling water and the remaining waste heat recovery amount.

[0090] As an optional embodiment, the first acquisition submodule is specifically used to: collect the temperature of the flue gas before waste heat recovery, the temperature of the flue gas after waste heat recovery, and the flow rate of the flue gas; based on the temperature of the flue gas before waste heat recovery, the temperature of the flue gas after waste heat recovery, the flow rate of the flue gas and the specific heat capacity of the flue gas, obtain the waste heat recovery amount of the flue gas from the steel rolling heating furnace.

[0091] As an optional embodiment, the first acquisition submodule is specifically used to: collect the temperature of the cooling water before heat exchange after leaving the furnace, the temperature of the cooling water after heat exchange after leaving the furnace, the flow rate of the cooling water, the temperature of the external steam, and the flow rate of the external steam; based on the temperature before heat exchange, the temperature after heat exchange, the flow rate of the cooling water, the temperature of the external steam, the flow rate of the external steam and the latent heat of vaporization of the cooling water, obtain the waste heat recovery amount of the cooling water of the steel rolling heating furnace.

[0092] As an optional embodiment, the combustion carbon emission factor is determined according to the fuel type of the steel rolling heating furnace. The fuel type is natural gas, and the combustion carbon emission factor is 0.4479-0.55 kgCO2 / m 3 , or the fuel type is coal gas, and the combustion carbon emission factor is 0.65-0.85 kgCO2 / m 3 .

[0093] As an optional embodiment, after determining the total carbon emissions of the steel rolling heating furnace, the method further includes: displaying the total carbon emissions.

[0094] The above modules can be implemented by software codes, in which case, the above modules can be stored in the memory of the control device. The above modules can also be implemented by hardware such as integrated circuit chips.

[0095] An embodiment of the present invention provides a carbon emission monitoring device for a steel rolling heating furnace, and its implementation principle and technical effects are the same as those of the aforementioned method embodiment. For the sake of brief description, for matters not mentioned in the device embodiment, reference may be made to the corresponding contents in the aforementioned method embodiment.

[0096] In a third aspect, based on the same inventive concept, this embodiment provides an electronic device 500, such as Figure 5 As shown, it includes: a memory 501, a processor 502 and a computer program 503 stored in the memory and executable on the processor. When the processor 502 executes the program, the steps of the method for monitoring carbon emissions from a steel rolling heating furnace described in the first aspect are implemented.

[0097] Since the electronic device introduced in this embodiment is an electronic device used to implement the determination method in the embodiment of the present application, based on the determination 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 in the determination method in the embodiment of the present application, it belongs to the scope of protection of this application.

[0098] 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.

[0099] 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 module that specifies functions in one or more boxes.

[0100] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction module, which is implemented in the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0101] 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.

[0102] 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.

[0103] 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 monitoring carbon emissions from a steel rolling heating furnace, characterized in that: include: Obtain the fuel consumption, power consumption and waste heat recovery of the steel rolling heating furnace; According to the fuel consumption and the preset combustion carbon emission factor, the fuel combustion carbon emission of the steel rolling heating furnace is obtained, according to the power consumption and the preset power carbon emission coefficient, the power consumption carbon emission of the steel rolling heating furnace is obtained, and the waste heat recovery conversion coefficient is obtained, and according to the waste heat recovery amount and the waste heat recovery conversion coefficient, the waste heat recovery conversion amount of the steel rolling heating furnace is obtained; The total carbon emissions of the steel rolling heating furnace are determined based on the carbon emissions from fuel combustion, the carbon emissions from electricity consumption and the waste heat recovery conversion amount.

2. The method according to claim 1, characterized in that Obtain waste heat recovery conversion coefficient, including: Monitor the volume fraction of CO gas, CO2 gas, CH4 gas and C n H m Volume fraction of gas; According to the calorific value of CO gas, the calorific value of CH4 gas, C n H m The calorific value of the gas, the volume fraction of the CO gas, the volume fraction of the CO2 gas, the volume fraction of the CH4 gas, and the C n H m The volume fraction of the gas is used to obtain the waste heat recovery conversion coefficient of the steel rolling heating furnace.

3. The method according to claim 1, characterized in that Obtain the waste heat recovery amount of the steel rolling heating furnace, including: Obtain the waste heat recovery amount of the flue gas discharged from the steel rolling heating furnace, the waste heat recovery amount of the cooling water, and the remaining waste heat recovery amount in the steel rolling heating furnace; The waste heat recovery amount of the steel rolling heating furnace is obtained based on the waste heat recovery amount of the exhaust gas, the waste heat recovery amount of the cooling water and the remaining waste heat recovery amount.

4. The method according to claim 3, characterized in that The method of obtaining the waste heat recovery amount of the flue gas discharged from the steel rolling heating furnace comprises: Collect the temperature of the flue gas before and after heat recovery, and the flow rate of the flue gas after heat recovery; Based on the temperature of the flue gas before waste heat recovery, the temperature of the flue gas after waste heat recovery, the flow rate of the flue gas and the specific heat capacity of the flue gas, the waste heat recovery amount of the flue gas from the steel rolling heating furnace is obtained.

5. The method according to claim 3, characterized in that Obtain the waste heat recovery of cooling water in the steel rolling heating furnace, including: Collect the temperature of cooling water before heat exchange after leaving the furnace, the temperature of cooling water after heat exchange after leaving the furnace, the flow rate of cooling water, the temperature of external steam and the flow rate of external steam in the steel rolling heating furnace; Based on the temperature before the heat exchange, the temperature after the heat exchange, the flow rate of the cooling water, the temperature of the external steam, the flow rate of the external steam and the latent heat of vaporization of the cooling water, the waste heat recovery amount of the cooling water of the steel rolling heating furnace is obtained.

6. The method according to claim 1, characterized in that The combustion carbon emission factor is determined according to the fuel type of the steel rolling heating furnace. The fuel type is natural gas, and the combustion carbon emission factor is 0.4479-0.55 kgCO2 / m 3 , or the fuel type is coal gas, and the combustion carbon emission factor is 0.65-0.85 kgCO2 / m 3 .

7. The method according to claim 1, characterized in that After determining the total carbon emissions of the steel rolling heating furnace, the following steps are also included: The total carbon emissions are displayed.

8. A carbon emission monitoring device for a steel rolling heating furnace, characterized in that: include: An acquisition module is used to acquire the fuel consumption, power consumption and waste heat recovery of the steel rolling heating furnace; A calculation module, used to obtain the carbon emission of fuel combustion of the steel rolling heating furnace according to the fuel consumption and the preset combustion carbon emission factor, obtain the carbon emission of electricity consumption of the steel rolling heating furnace according to the power consumption and the preset power carbon emission coefficient, and obtain the waste heat recovery conversion coefficient, and obtain the waste heat recovery conversion amount of the steel rolling heating furnace according to the waste heat recovery amount and the waste heat recovery conversion coefficient; The determination module is used to determine the total carbon emissions of the steel rolling heating furnace based on the carbon emissions from fuel combustion, the carbon emissions from electricity consumption and the waste heat recovery conversion amount.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method according to any one of claims 1 to 7 when executing the program.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method described in any one of claims 1 to 7 are implemented.

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