Energy consumption quantitative analysis method, system, equipment and computer readable storage medium for continuous casting billet hot delivery and hot charging

Abstract

The application provides a continuous casting billet hot delivery and hot charging energy consumption quantitative analysis method, sets a reference statistical interval, and obtains continuous casting billet hot delivery and hot charging parameter information in the reference statistical interval; sets a to-be-analyzed statistical interval, and obtains continuous casting billet hot delivery and hot charging parameter information in the to-be-analyzed statistical interval; quantitatively analyzes energy consumption changes based on parameter information of the to-be-analyzed statistical interval and the reference statistical interval; through the technical scheme provided in the application, the continuous casting billet hot delivery and hot charging energy consumption can be accurately quantitatively analyzed, so that the specific influence of adjusting the continuous casting billet hot delivery and hot charging and parameter information on the energy consumption of a steel enterprise can be known; according to the quantitative analysis result, the expenditure and improvement of the enterprise in adjusting the continuous casting billet hot delivery and hot charging can be associated, the quantitative benefits of the related parameters of adjusting the continuous casting billet hot delivery and hot charging on energy saving and emission reduction of the enterprise are further evaluated, and the steel enterprise can more intuitively obtain the benefit effect of the related parameters of adjusting the continuous casting billet hot delivery and hot charging on the development of the enterprise.

Description

Technical Field

[0001] This invention relates to the field of energy consumption analysis technology, and specifically discloses a method, system, equipment, and computer-readable storage medium for quantitative analysis of energy consumption during hot charging and hot delivery of continuously cast billets. Background Technology

[0002] In the steel production process, whether using iron ore as raw material in a long process or scrap steel, steelmaking, continuous casting, and hot rolling are three indispensable key processes. These processes are sequential, presenting not only logistical balance issues but also energy and time balance issues due to the high temperatures involved. The heating process of a heating furnace generally consists of three stages: preheating (around 600℃), heating, and homogenization. Directly charging the continuously cast billet at high temperatures eliminates the need for preheating and part of the heating process (determined by the charging temperature), shortening the process flow and making production more compact, rational, efficient, and energy-saving, resulting in significant economic benefits. To improve the production efficiency of heating furnaces, reduce energy consumption, and decrease pollution emissions, steel companies have widely adopted the hot-charging and hot-feeding rolling process for cast billets. Hot charging and hot delivery can reduce fuel consumption. For every 100°C increase in the hot charging and hot delivery temperature of continuously cast billets, the heating furnace can save 5%–6% of fuel and increase its capacity by 10%–15%. It can also reduce burn-off. Generally, the burn-off of cold billets is 1.5%–2%, and sometimes even reaches 2.5%, while under hot charging conditions, oxidation burn-off can be reduced to 0.5%–0.7%. Furthermore, it can increase the heating rate. Hot charging reduces temperature changes during cooling and heating, lowering internal stress in the billet and facilitating a faster heating rate. The current standards for hot charging and hot delivery levels of continuously cast billets are shown in the table below. The implementation of these standards has greatly promoted the improvement of hot charging and hot delivery levels in the steel industry and reduced fuel consumption in steel rolling. Hot charging and hot delivery processes have multiple benefits for steelmaking and rolling production. They can effectively reduce fuel consumption per unit, increase furnace output, and reduce inventory, while also reducing environmental pollution and improving the working environment, thereby achieving energy conservation, cost reduction, and efficiency improvement.

[0003] However, there is currently a lack of quantitative analysis methods for the energy-saving and consumption-reducing effects of hot charging and hot delivery of continuously cast billets. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a method, system, equipment, and computer-readable storage medium for quantitative analysis of energy consumption during hot charging and hot delivery of continuously cast billets.

[0005] The first aspect of this application provides a method for quantitatively analyzing the energy consumption of hot charging and hot delivery of continuously cast billets. This method specifically includes:

[0006] Set a baseline statistical interval and obtain the hot charging and conveying parameter information of the continuously cast billet within the baseline statistical interval; set a statistical interval to be analyzed and obtain the hot charging and conveying parameter information of the continuously cast billet within the statistical interval to be analyzed; perform quantitative analysis of energy consumption changes based on the parameter information of the statistical interval to be analyzed and the baseline statistical interval, wherein: the energy consumption change is as follows:

[0007]

[0008] Where: Δb is the change in fuel consumption per unit of the production line; μ is the positive coefficient for hot and cold mixed decoration of the continuous casting billet; θ is the hot charging rate of the production line; η is the average thermal efficiency of the heating furnace; c cin t is the specific heat corresponding to the average furnace temperature of the cold material. cin c is the average temperature of the cold material entering the furnace. hin The specific heat corresponding to the average furnace temperature of the hot-charged material; t hin c is the average temperature of the hot-charged material entering the furnace; out t is the specific heat corresponding to the average furnace discharge temperature of the material. out 1 represents the average furnace exit temperature of the material; Ⅰ is a superscript indicating the baseline statistical interval value; Ⅱ is a superscript indicating the statistical interval value to be analyzed; the positive coefficient μ for hot and cold mixed decoration of continuous casting billets is determined according to the mass proportion of hot billets that are heated in the furnace at the same time as cold billets in all hot billets.

[0009] In one embodiment of the present invention, the value of the hot and cold mixed decoration correction coefficient of the continuously cast billet is as follows: when the mass of the hot billet heated simultaneously with the cold billet in the furnace accounts for less than or equal to 30% of the total mass of the hot billet, μ = 30%; when the mass of the hot billet heated simultaneously with the cold billet in the furnace accounts for more than 30% but less than or equal to 60% of the total mass of the hot billet, μ = 60%; when the mass of the hot billet heated simultaneously with the cold billet in the furnace accounts for more than 60% of the total mass of the hot billet, μ = 90%.

[0010] In one embodiment of the present invention, the material discharge temperature standard is the same for the benchmark statistical interval and the statistical interval to be analyzed.

[0011] In one embodiment of the present invention, the furnace inlet temperature of the reference statistical interval and the statistical interval to be analyzed is taken as the average surface temperature of the continuously cast billet that meets the hot charging standard.

[0012] In one embodiment of the present invention, the production load of the heating furnace during the hourly operation of the benchmark statistical interval to be analyzed and the statistical interval to be analyzed should be equal, and the average thermal efficiency of the heating furnace should remain unchanged.

[0013] In one embodiment of the present invention, the temperature t of the cold material entering the furnace is... cin The temperature is uniformly set to 20℃.

[0014] The second aspect of this application provides a quantitative analysis system for energy consumption of hot-feeding and hot-charging of continuously cast billets, characterized in that it is applied to the quantitative analysis method for energy consumption of hot-feeding and hot-charging of continuously cast billets described in this invention; the energy consumption quantitative analysis system includes: a first setting unit, used to set a benchmark statistical interval and acquire hot-feeding and hot-charging parameter information of continuously cast billets within the benchmark statistical interval; a second setting unit, used to set a statistical interval to be analyzed and acquire hot-feeding and hot-charging parameter information of continuously cast billets within the statistical interval to be analyzed; and a quantitative analysis unit, used to perform quantitative analysis of energy consumption changes based on the parameter information of the statistical interval to be analyzed and the benchmark statistical interval; wherein, the energy consumption change is as follows:

[0015]

[0016] Where: Δb is the change in fuel consumption per unit of the production line; μ is the positive coefficient for hot and cold mixed decoration of the continuous casting billet; θ is the hot charging rate of the production line; η is the average thermal efficiency of the heating furnace; c cin t is the specific heat corresponding to the average furnace temperature of the cold material. cin c is the average temperature of the cold material entering the furnace. hin The specific heat corresponding to the average furnace temperature of the hot-charged material; t hin c is the average temperature of the hot-charged material entering the furnace; out t is the specific heat corresponding to the average furnace discharge temperature of the material. out 1 represents the average furnace exit temperature of the material; Ⅰ is a superscript indicating the baseline statistical interval value; Ⅱ is a superscript indicating the statistical interval value to be analyzed; the positive coefficient μ for hot and cold mixed decoration of continuous casting billets is determined according to the mass proportion of hot billets that are heated in the furnace at the same time as cold billets in all hot billets.

[0017] A third aspect of this application provides a quantitative analysis device for energy consumption of hot delivery and charging of continuously cast billets, comprising: a memory for storing a computer program; and a processor for executing the computer program to implement the quantitative analysis method for energy consumption of hot delivery and charging of continuously cast billets according to the present invention.

[0018] A third aspect of this application provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, which, when executed by a processor, implements the quantitative analysis method for energy consumption of hot delivery and charging of continuously cast billets as described in this invention.

[0019] Compared with the prior art, this application has the following beneficial effects:

[0020] The technical solution proposed in this application enables accurate quantitative analysis of the energy consumption of hot charging and conveying of continuously cast billets. This allows for a precise understanding of the specific impact of adjusting the hot charging and conveying parameters on the energy consumption of steel enterprises. Based on the quantitative analysis results, the enterprise's expenditures and improvements in adjusting the hot charging and conveying parameters can be correlated. Furthermore, the quantitative benefits of adjusting the relevant parameters of the hot charging and conveying parameters on energy conservation and emission reduction can be evaluated, enabling steel enterprises to more intuitively obtain the benefits brought to their development by adjusting the relevant parameters of the hot charging and conveying parameters. At the same time, the hot charging and conveying of continuously cast billets tightly connects the steelmaking and rolling processes into an integrated production system, resulting in a small buffer margin and poor anti-interference ability of the entire system. This quantitative energy consumption analysis method provides a foundation for improving the system's anti-interference ability in the future. Attached Figure Description

[0021] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 According to an embodiment of this application, a flowchart illustrating a method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets is shown.

[0023] Figure 2 According to an embodiment of this application, a data acquisition and processing flow of a method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets is shown.

[0024] Figure 3 According to an embodiment of this application, a calculation example of a method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets is shown;

[0025] Figure 4 According to an embodiment of this application, a structural schematic diagram of a quantitative analysis system for energy consumption of hot charging and hot delivery of continuously cast billets is shown.

[0026] Figure 5 According to an embodiment of this application, a structural schematic diagram of a quantitative analysis device for energy consumption of hot charging and hot delivery of continuously cast billets is shown.

[0027] Figure 6 According to an embodiment of this application, a schematic diagram of the structure of a computer-readable storage medium is shown. Detailed Implementation

[0028] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0029] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least regionally based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0030] First, the definition and classification of hot charging and hot delivery of continuously cast billets will be explained:

[0031] Cold charging rolling (CCR) involves loading cold billets, with temperatures ranging from approximately 20°C to 40°C, into a heating furnace for heating. Hot charging, on the other hand, involves transferring the finished continuous casting billets, still red-hot, from the continuous casting line to the rolling line. Hot charging of the continuously cast billets involves loading the hot-delivered, red-hot billets into the rolling furnace.

[0032] Hot charging and hot delivery processes for continuously cast billets are typically classified according to the different temperatures at which the billets enter the furnace:

[0033] (1) Continuous Casting-Hot Charging Rolling (CC-HCR): The temperature of the continuous casting billet is less than A1 and greater than 400℃, about 400~700℃. A heat preservation pit is set up between the casting machine and the heating furnace. The hot continuous casting billet is placed in the heat preservation pit or temporarily placed in the billet yard. The heat preservation pit and the billet yard are important buffer places for the continuous casting billet.

[0034] (2) Continuous Casting-Direct Hot Charging Rolling (CC-DHCR): The continuous casting billet temperature is between A1 and A3, approximately 700–1100℃. The hot billet directly enters the heating furnace before rolling begins. From a metallurgical perspective, at this temperature, the billet is located in the two-phase region. After phase transformation and heating, the billet microstructure is a mixed structure of original austenite and phase-transformed refined austenite, but the degree of precipitation and dissolution of trace elements varies.

[0035] (3) Continuous Casting-Hot Direct Rolling (CC-HDR): The temperature of the continuous casting billet is greater than A3 and less than 1100℃. The continuous casting billet is heated online and then rolled. The metallurgical characteristics are generally similar to those of CC-DR, with only a small amount of trace elements precipitating and re-dissolving.

[0036] (4) Continuous Casting-Direct Rolling (CC-DR): The temperature is generally above 1100℃, and the hot billet is directly hot rolled without any reheating. Since there is no cooling heating and phase transformation recrystallization process, the billet retains coarse austenite grains before rolling, and trace elements such as Nb and V fail to precipitate, so the grains need to be refined during rolling.

[0037] The advantages of using hot-feeding and hot-charging of continuously cast billets are:

[0038] 1) Energy saving. Hot charging of continuously cast billets makes full use of the heat of the billets themselves; the higher the temperature of the billets entering the furnace, the lower the energy consumption per unit.

[0039] 2) Improve yield and reduce material costs. Hot charging and hot delivery shorten the heating time of the continuous casting billet, eliminating the need for heating once the temperature reaches the target level. This reduces secondary burn-off during the heating process and directly improves production efficiency.

[0040] 3) Because the hot billet goes directly into the heating furnace, heating time is saved, the rolling process is accelerated, and output is increased;

[0041] 4) Optimize production logistics to reduce slab warehouse, labor costs and transportation costs.

[0042] In summary, the hot charging and hot delivery process has many benefits for steelmaking and rolling production. It can not only effectively reduce gas consumption per unit, increase furnace output and reduce inventory, but also reduce environmental pollution and improve the working environment, thereby achieving energy conservation, cost reduction and efficiency improvement.

[0043] The iron-carbon alloy phase diagram includes several temperatures: A0, A1, A2, A3, A4, and Acm. Their specific meanings are as follows:

[0044] A0: Temperature 230℃, Curie point of cementite;

[0045] A1: PSK line, temperature 727℃, eutectoid transformation temperature;

[0046] A2: MO line, temperature 770℃, Curie point of ferrite;

[0047] A3: GS line, temperature 727~912℃, the end line of ferrite to austenite transformation (heating) or the beginning line of austenite to ferrite transformation (cooling).

[0048] A4: NJ line, the end line (cooling) of the transformation of high-temperature ferrite to austenite at a temperature of 1394-1495°C, or the beginning line (heating) of the transformation of austenite to high-temperature ferrite.

[0049] Acm: ES line, the solubility curve of carbon in austenite at temperatures of 727–1148℃, also known as the precipitation line of cementite;

[0050] Additionally: Since there is superheat during heating and supercooling during cooling, the same phase transition point is different when heated and cooled. Therefore, it is represented by c when heated and r when cooled. So the corresponding phase transition points are: Ac1, Ac3, Accm when heated and Ar1, Ar3, Armm when cooled.

[0051] The indicator reflecting the thermal economy of hot charging and hot delivery of continuously cast billets is fuel consumption per unit (or fuel consumption per unit product), which is defined as follows:

[0052]

[0053] In the formula:

[0054] 1) b——Fuel consumption per unit, kgce / t;

[0055] 2) B – Fuel consumption, here only considering the consumption of natural gas, Nm 3 / h;

[0056] 3)Q 低 —Lower heating value of fuel, kJ / Nm 3 ;

[0057] 4) G—Hourly continuous casting billet heating output, t / h;

[0058] 5) 29307.6——Standard coal calorific value, kJ / kgce.

[0059] From the perspective of fuel consumption during the rolling process:

[0060] 1) CCR has the highest fuel consumption per unit, while CC-DR completely eliminates the heating furnace, resulting in zero fuel consumption per unit;

[0061] 2) The fuel consumption levels of CC-HCR, CC-DHCR, and CC-HDR are between those of CCR and CC-DR, and the fuel consumption decreases with the increase of continuous casting billet temperature.

[0062] 3) When CC-HDR uses electric supplemental heating, its fuel consumption is also reduced to zero.

[0063] Among them, the main factors affecting the energy-saving effect of hot charging of continuous casting billets include the charging temperature of continuous casting billets, the exit temperature of continuous casting billets, the hot charging rate, the furnace productivity, and the heating furnace thermal efficiency.

[0064] (1) Continuous casting billet charging temperature

[0065] Increasing the charging temperature of continuously cast billets can reduce fuel consumption per unit area.

[0066] (2) Continuous casting billet tapping temperature

[0067] If the temperature of the continuously cast billet exiting the furnace is too high or does not meet the standard, the thermal efficiency of the heating furnace will be reduced.

[0068] (3) Hot charging rate

[0069] Hot charging rate usually refers to the ratio of the billet mass to the total mass of billets entering the furnace when the hot charging temperature is within a certain range.

[0070] The hot charging and hot delivery process for continuously cast billets is becoming increasingly mature. By utilizing the heat of the continuously cast billets and coordinating with corresponding production control measures, the continuous casting process and the rolling process are closely linked, which largely realizes energy conservation, emission reduction and logistics optimization in the billet production process.

[0071] If the amount of hot billet charged into the furnace does not meet the requirements of the heating furnace scale, there will be problems such as cold billets and hot billets being fed into the furnace alternately, and frequent switching between the heating modes of cold charging and hot charging. Hot delivery and hot charging technology cannot achieve 100% hot charging, and the continuous casting billets will inevitably be mixed with cold charging.

[0072] If a cold billet is added immediately after a hot-charged billet, the furnace cannot instantly change its heating conditions because the billet was heated using the hot-charge process. The subsequent cold billet is also heated using the hot-charge process, resulting in insufficient heating. When the temperature difference is less than 300℃, the cold-charged billet exits the furnace at a relatively low temperature and the cross-sectional temperature is uneven, but still within the production allowable range. However, when the temperature difference between hot and cold billets is too large, the cold billet may develop a hard core due to severe underheating and excessively low temperature.

[0073] If a cold billet is heated in the heating furnace and then a hot billet is added, the hot billet will be heated to an excessively high temperature under the same heating regime as the cold billet, which will waste energy, increase metal oxidation and burning loss, and even cause the hot billet temperature to reach the furnace temperature, causing the iron oxide scale on the surface of the continuously cast billet to melt and burn again.

[0074] Mixing hot and cold billets in continuous casting reduces heating quality and affects the hot charging effect. The impact is relatively small when the temperature difference is less than 300-400℃, but when the temperature difference exceeds 500℃, methods such as increasing the mixing time interval are needed to reduce the frequency of hot and cold billet mixing. Therefore, a high hot charging rate does not necessarily guarantee good energy efficiency; each case must be analyzed individually.

[0075] (4) Heating furnace productivity

[0076] Furnace productivity refers to the output of steel billets heated to the specified temperature per unit time. If the furnace productivity fails to reach the designed capacity under hot charging conditions, low-load production will reduce the furnace's efficiency.

[0077] (5) Heating furnace thermal efficiency

[0078] Furnace thermal efficiency refers to the percentage of heat absorbed by the steel billet during the heating process relative to the heat released by fuel combustion. It is an important indicator of furnace performance. High thermal efficiency indicates good utilization of thermal energy, and improving furnace thermal efficiency can reduce energy consumption.

[0079] The energy-saving and consumption-reducing effects of hot charging and hot delivery of continuously cast billets are mainly reflected in the following two aspects:

[0080] (1) Reduce fuel consumption per unit

[0081] Reducing fuel consumption per unit is the most direct manifestation of the energy-saving and consumption-reducing effect of hot delivery and charging of continuously cast billets.

[0082] (2) Reduce energy consumption in the steel rolling process

[0083] While hot charging of continuously cast billets can reduce fuel consumption per unit, the use of electric supplementary heating will increase electricity consumption per unit, and the energy consumption of the rolling process will also change accordingly.

[0084] This method focuses on reducing the fuel consumption of heating furnaces and does not consider hot delivery and charging processes that do not use heating furnaces.

[0085] Example

[0086] like Figure 1 As shown, the technical solution of the present invention is: a method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets, comprising:

[0087] Step 101: Set a baseline statistical interval and obtain the hot charging and hot delivery parameter information of the continuous casting billet within the baseline statistical interval;

[0088] Step 102: Set the statistical interval to be analyzed, and obtain the hot charging and hot delivery parameter information of the continuous casting billet within the statistical interval to be analyzed;

[0089] Step 103: Quantitatively analyze energy consumption changes based on the parameter information of the statistical interval to be analyzed and the benchmark statistical interval, wherein:

[0090] The energy consumption change is as follows:

[0091]

[0092] Where: Δb is the change in fuel consumption per unit of the production line; μ is the positive coefficient for hot and cold mixed decoration of the continuous casting billet; θ is the hot charging rate of the production line; η is the average thermal efficiency of the heating furnace; c cin t is the specific heat corresponding to the average furnace temperature of the cold material. cin c is the average temperature of the cold material entering the furnace. hin The specific heat corresponding to the average furnace temperature of the hot-charged material; t hin c is the average temperature of the hot-charged material entering the furnace; out t is the specific heat corresponding to the average furnace discharge temperature of the material.out 1 represents the average furnace exit temperature of the material; Ⅰ is a superscript indicating the baseline statistical interval value; Ⅱ is a superscript indicating the statistical interval value to be analyzed; the positive coefficient μ for hot and cold mixed decoration of continuous casting billets is determined according to the mass proportion of hot billets that are heated in the furnace at the same time as cold billets in all hot billets.

[0093] In some embodiments of this application, the positive coefficient for the hot and cold mixed decoration of the continuously cast billet is:

[0094] When the mass of the hot-charged billet heated in the furnace at the same time as the cold billet accounts for less than or equal to 30% of the total mass of the hot-charged billet, μ = 30%;

[0095] When the mass of hot-charged billets heated in the furnace simultaneously with cold billets accounts for more than 30% and less than or equal to 60% of the total mass of hot-charged billets, μ = 60%.

[0096] When the mass of the hot-charged billet heated simultaneously with the cold billet in the furnace accounts for more than 60% of the total mass of the hot-charged billet, μ = 90%.

[0097] In some embodiments of this application, the material discharge temperature standard is the same for the baseline statistical interval and the statistical interval to be analyzed.

[0098] In some embodiments of this application, the furnace inlet temperature of the baseline statistical interval and the statistical interval to be analyzed is taken as the average surface temperature of the continuously cast billet that meets the hot charging standard.

[0099] In some embodiments of this application, the production load of the heating furnace operating hours between the benchmark statistical interval to be analyzed and the statistical interval to be analyzed should be equal, and the average thermal efficiency of the heating furnace should remain unchanged.

[0100] In some embodiments of this application, the temperature t of the cold material entering the furnace is... cin The temperature is uniformly set to 20℃.

[0101] In some embodiments of this application, such as Figure 2 The diagram illustrates the data acquisition and processing flow of a method for quantitatively analyzing the energy consumption of hot charging and hot delivery of continuously cast billets. It can be seen that throughout the entire long-process steel production process, data can be acquired through offline collection and online monitoring of each process step, thereby achieving the acquisition of analytical data in each of the aforementioned steps.

[0102] In some embodiments of this application, Figure 3 A calculation example of a method for quantitatively analyzing the energy consumption of hot charging and hot delivery of continuously cast billets is shown. For example... Figure 3 As shown, the changes in energy consumption during hot charging and hot delivery of continuously cast billets can be easily obtained, providing strong data support for enterprises' energy conservation and emission reduction plans.

[0103] In some embodiments of this application, Figure 4 A schematic diagram of a system for quantitatively analyzing the energy consumption of hot-feeding and hot-charging of continuously cast billets is shown, which is applied to the energy consumption quantitative analysis method for hot-feeding and hot-charging of continuously cast billets provided in the aforementioned embodiments. Figure 4 As shown, this energy consumption quantitative analysis system may include: a first setting unit 001, used to set a benchmark statistical interval and acquire continuous casting billet hot charging parameter information within the benchmark statistical interval; a second setting unit 002, used to set a statistical interval to be analyzed and acquire continuous casting billet hot charging parameter information within the statistical interval to be analyzed; and a quantitative analysis unit 003, used to perform quantitative analysis of energy consumption changes based on the parameter information of the statistical interval to be analyzed and the benchmark statistical interval; wherein, the energy consumption change is as follows:

[0104]

[0105] Where: Δb is the change in fuel consumption per unit of the production line; μ is the positive coefficient for hot and cold mixed decoration of the continuous casting billet; θ is the hot charging rate of the production line; η is the average thermal efficiency of the heating furnace; c cin t is the specific heat corresponding to the average furnace temperature of the cold material. cin c is the average temperature of the cold material entering the furnace. hin The specific heat corresponding to the average furnace temperature of the hot-charged material; t hin c is the average temperature of the hot-charged material entering the furnace; out t is the specific heat corresponding to the average furnace discharge temperature of the material. out 1 represents the average furnace exit temperature of the material; Ⅰ is a superscript indicating the baseline statistical interval value; Ⅱ is a superscript indicating the statistical interval value to be analyzed; the positive coefficient μ for hot and cold mixed decoration of continuous casting billets is determined according to the mass proportion of hot billets that are heated in the furnace at the same time as cold billets in all hot billets.

[0106] In some embodiments of this application, a quantitative analysis device for energy consumption of hot charging and hot delivery of continuously cast billets is also provided. This device may include:

[0107] Memory, used to store computer programs;

[0108] A processor is used to execute a computer program to implement the quantitative analysis method for energy consumption of hot delivery and charging of continuously cast billets as described in the technical solution of this application.

[0109] It is understood that various aspects of the technical solution of this application can be implemented as a system, method, or program product. Therefore, various aspects of the technical solution of this application can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software implementation, which can be collectively referred to here as a "circuit", "module", or "platform".

[0110] Figure 5 According to some embodiments of this application, a structural schematic diagram of a device for quantitatively analyzing the energy consumption of hot charging and hot delivery of continuously cast billets is shown. See below for reference. Figure 5 The electronic system 600 implemented according to the embodiments of this example will be described in detail below. Figure 5 The electronic system 600 shown is merely an example and should not impose any limitation on the functionality and scope of use of any embodiment of the technical solution in this application.

[0111] like Figure 5 As shown, the electronic system 600 is presented in the form of a general-purpose computing device. The components of the electronic system 600 may include, but are not limited to: at least one processing unit 610, at least one storage unit 620, a bus 630 connecting different platform components (including storage unit 620 and processing unit 610), a display unit 640, etc.

[0112] The storage unit stores program code, which can be executed by the processing unit 610, enabling the processing unit 610 to perform each step of the quantitative analysis method for energy consumption of hot delivery and charging of continuous casting billets in this embodiment.

[0113] Storage unit 620 may include a readable medium in the form of a volatile storage unit, such as random access unit (RAM) 6201 and / or cache storage unit 6202, and may further include read-only storage unit (ROM) 6203.

[0114] Storage unit 620 may also include a program / utility 6204 having a set (at least one) program module 6205, such program module 6205 including but not limited to: operating system, one or more application programs, other program modules and program data, each of these examples or some combination thereof may include an implementation of a network environment.

[0115] Bus 630 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, an image acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0116] The electronic system 600 can also communicate with one or more external devices 700 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with the electronic system 600, and / or with any device that enables the electronic system to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 650. Furthermore, the electronic system 600 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 660. Network adapter 660 can communicate with other modules of the electronic system 600 via bus 630. It should be understood that, although... Figure 5 As not shown in the diagram, other hardware and / or software modules may be used in conjunction with the electronic system 600, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage platforms.

[0117] In some embodiments of this application, a computer-readable storage medium is also provided, on which a computer program is stored. When the computer program is executed by a processor, it can implement the relevant steps of the quantitative analysis method for energy consumption of hot delivery and charging of continuous casting billets provided in the above embodiments.

[0118] Although other specific implementation methods are not listed in detail in this embodiment, in some possible implementation methods, various aspects of the technical solution described in this application can also be implemented in the form of a program product, which includes program code. When the program product is run on a terminal device, the program code is used to cause the terminal device to perform the steps of the implementation methods described in the image stitching method area of ​​this application according to the various embodiments of the technical solution of this application.

[0119] Figure 6 A schematic diagram of the structure of a computer-readable storage medium is shown according to some embodiments of this application. For example... Figure 6 As shown, a program product 800 for implementing the above-mentioned quantitative analysis method for energy consumption of hot charging and hot delivery of continuously cast billets is described in an embodiment of the technical solution of this application. This program product can be a portable compact disc read-only memory (CD-ROM) and includes program code, and can run on a terminal device, such as a personal computer. Of course, the program product generated according to this embodiment is not limited to this. In the technical solution of this application, the readable storage medium can be any tangible medium containing or storing a program, which can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0120] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0121] Computer-readable storage media may include data signals propagated in baseband or as a carrier wave region, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable storage medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the readable storage medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0122] Program code for executing the technical solutions of this application can be written in any combination of one or more programming languages. These programming languages ​​include object-oriented programming languages—such as Java and C++—and conventional procedural programming languages—such as C or similar languages. The program code can execute entirely on the user's computing device, locally on the user's device, as a standalone software package, locally on the user's computing device, locally on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0123] In summary, the technical solution proposed in this application enables accurate quantitative analysis of the energy consumption of hot charging and conveying of continuously cast billets. This allows for a precise understanding of the specific impact of adjusting the hot charging and conveying parameters on the energy consumption of steel enterprises. The quantitative analysis results can be correlated with the enterprise's expenditures and improvements in adjusting the hot charging and conveying parameters, further assessing the quantitative benefits of adjusting these parameters for energy conservation and emission reduction. This allows steel enterprises to more intuitively understand the benefits of adjusting these parameters for enterprise development. Furthermore, the hot charging and conveying of continuously cast billets tightly connects the steelmaking and rolling processes into an integrated production system, resulting in a small buffer zone and poor anti-interference capability. This quantitative energy consumption analysis method provides a foundation for subsequently improving the system's anti-interference capability.

[0124] The above description is only a description of the preferred embodiment of the technical solution of this application, and is not intended to limit the scope of the technical solution of this application. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets, characterized in that, The energy consumption quantitative analysis method includes: Set a baseline statistical interval and obtain the hot charging and hot delivery parameter information of the continuous casting billet within the baseline statistical interval; Set the statistical interval to be analyzed, and obtain the hot charging and hot delivery parameter information of the continuous casting billet within the statistical interval to be analyzed; Quantitative analysis of energy consumption changes is performed based on the parameter information of the statistical interval to be analyzed and the benchmark statistical interval, wherein: The energy consumption change is as follows: in: This represents the change in fuel consumption per unit of the production line; For the positive coefficient of hot and cold mixed decoration of continuously cast billets; η is the production line heat loading rate; η is the average thermal efficiency of the heating furnace. The specific heat corresponding to the average furnace temperature of the cold material; The average temperature of cold materials entering the furnace; The specific heat corresponding to the average furnace temperature of the hot-charged material; The average temperature of the hot-charged materials entering the furnace; The specific heat corresponding to the average furnace exit temperature of the material; The average furnace discharge temperature of the material; Ⅰ is a superscript indicating the baseline statistical interval value; Ⅱ is a superscript indicating the statistical interval value to be analyzed; positive coefficient for hot and cold mixed decoration of continuously cast billets. The value is determined based on the proportion of the mass of the hot-charged billets that are heated in the furnace at the same time as the cold billets.

2. The method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets as described in claim 1, characterized in that, The value of the positive coefficient for the hot and cold mixed finishing of the continuously cast billet is: When the mass of the hot-charged billet heated simultaneously with the cold billet in the furnace accounts for less than or equal to 30% of the total mass of the hot-charged billet, μ = 30%; When the mass of the hot-charged billet heated simultaneously with the cold billet in the furnace accounts for more than 30% but less than or equal to 60% of the total mass of the hot-charged billet, μ = 60%; When the mass of the hot-charged billet heated in the furnace at the same time as the cold billet accounts for more than 60% of the total mass of the hot-charged billet, μ = 90%.

3. The method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets as described in claim 1, characterized in that, The standard for material discharge temperature is the same for both the baseline statistical interval and the statistical interval to be analyzed.

4. The method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets as described in claim 3, characterized in that, The furnace inlet temperature for both the baseline statistical interval and the statistical interval to be analyzed is the average surface temperature of the continuously cast billet that meets the hot charging standard.

5. The method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets as described in claim 1, characterized in that, The production load of the heating furnace during the operating hours should be equal in the baseline statistical interval and the statistical interval to be analyzed, and the average thermal efficiency of the heating furnace should remain unchanged.

6. The method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets as described in claim 5, characterized in that, The temperature of the cold material entering the furnace The temperature is uniformly set to 20℃.

7. A quantitative analysis system for energy consumption in hot charging and hot delivery of continuously cast billets, characterized in that, Applied to the quantitative analysis method for energy consumption of hot delivery and charging of continuous casting billets as described in any one of claims 1 to 6; The energy consumption quantitative analysis system includes: The first setting unit is used to set the benchmark statistical interval and obtain the hot charging parameter information of the continuous casting billet within the benchmark statistical interval. The second setting unit is used to set the statistical interval to be analyzed and to obtain the hot charging and hot delivery parameter information of the continuous casting billet within the statistical interval to be analyzed. A quantitative analysis unit is used to perform quantitative analysis of energy consumption changes based on parameter information of the statistical interval to be analyzed and the benchmark statistical interval; The energy consumption change is as follows: in: This represents the change in fuel consumption per unit of the production line; For the positive coefficient of hot and cold mixed decoration of continuously cast billets; η is the production line heat loading rate; η is the average thermal efficiency of the heating furnace. The specific heat corresponding to the average furnace temperature of the cold material; The average temperature of cold materials entering the furnace; The specific heat corresponding to the average furnace temperature of the hot-charged material; The average temperature of the hot-charged materials entering the furnace; The specific heat corresponding to the average furnace exit temperature of the material; The average furnace discharge temperature of the material; Ⅰ is a superscript indicating the baseline statistical interval value; Ⅱ is a superscript indicating the statistical interval value to be analyzed; positive coefficient for hot and cold mixed decoration of continuously cast billets. The value is determined based on the proportion of the mass of the hot-charged billets that are heated in the furnace at the same time as the cold billets.

8. A quantitative analysis device for energy consumption of hot charging and hot delivery of continuously cast billets, characterized in that, include: Memory, used to store computer programs; A processor, configured to execute the computer program to implement the method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method for quantitative analysis of energy consumption in hot charging and hot delivery of continuously cast billets as described in any one of claims 1 to 6.

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