A coal injection amount adjusting method, system, electronic device and storage medium

Abstract

The application relates to a coal injection amount adjusting method and system, electronic equipment and a storage medium, the coal injection amount adjusting method comprising the following steps: acquiring average batch number of discharging per unit time, batch material volume information, volume between the interface of a furnace shaft and a furnace waist and a tuyere center line plane, and smelting cycle time length information; confirming a coal powder thermal lag time length according to the average batch number of discharging per unit time, the batch material volume information and the volume between the interface of the furnace shaft and the furnace waist and the tuyere center line plane; and confirming a coal injection adjustment starting time according to the coal powder thermal lag time length, the smelting cycle time length information and first batch of furnace charge entering a furnace time information after coke load changes. The application comprehensively considers single and multiple factors to confirm the coal injection amount adjustment starting time, improves the punctuality of the coal injection amount adjustment starting time, can accurately calculate the coal injection amount adjustment starting time when the coke load of the entering furnace charge changes, can be used for guiding blast furnace operators to adjust the furnace condition, and avoids the fluctuation of the furnace temperature and the waste of the fuel consumption.

Description

Technical Field

[0001] This application relates to the field of blast furnace production technology, specifically to a method, system, electronic device, and storage medium for adjusting pulverized coal injection volume. Background Technology

[0002] Under the dual objectives of stable furnace conditions and energy conservation and emission reduction, maintaining stable and reasonable blast furnace heat is one of the most important tasks in daily production. To achieve optimal technical and economic indicators, operators adjust the coke load based on furnace operating conditions. However, adjusting the coke load leads to changes in the heat inside the blast furnace. To ensure stable heat inside the furnace, operators adjust parameters affecting furnace heat, with pulverized coal injection rate being the primary and most commonly used adjustment parameter.

[0003] During pulverized coal injection in a blast furnace, the decomposition and heat absorption of pulverized coal in the hearth causes a temporary decrease followed by an increase in hearth temperature, known as the "thermal lag" time. To ensure a smooth heat transition when the burden reaches the hearth after adjusting the coke load, the thermal lag time of the hot pulverized coal must be considered when adjusting the pulverized coal injection rate. Currently, blast furnace operators typically estimate the thermal lag time based on experience and adjust the injection rate accordingly. However, due to differences in operational experience and furnace operating conditions, the start time and injection rate per unit time often become inaccurate, leading to fluctuations in furnace temperature and affecting furnace stability. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, this application provides a method, system, electronic device and storage medium for adjusting pulverized coal injection quantity, in order to solve the technical problem that the start time and pulverized coal injection quantity of the prior art are often inaccurate due to different operating experience and different furnace operating conditions, resulting in fluctuations in furnace heat and affecting the stability of furnace conditions.

[0005] In a first aspect, this application provides a method for adjusting the amount of pulverized coal injected, the method comprising:

[0006] Acquire information on the average number of batches fed per unit time, batch volume, volume between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres, and smelting cycle duration.

[0007] Based on the average number of batches fed per unit time, batch volume information, and volume information between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres, the thermal lag time of pulverized coal is determined.

[0008] Based on the information on the thermal lag time of pulverized coal, the duration of the smelting cycle, and the time of the first batch of furnace charge after the change in coke load, the start time of pulverized coal injection adjustment is confirmed.

[0009] In an exemplary embodiment of this application, obtaining batch volume information includes:

[0010] Obtain information on the batch weight of sintered ore in the furnace charge, the bulk density of sintered ore in the furnace charge, the batch weight of pellets in the furnace charge, the bulk density of pellets in the furnace charge, the batch weight of raw ore in the furnace charge, the bulk density of raw ore in the furnace charge, the batch weight of coke in the furnace charge, and the bulk density of coke in the furnace charge.

[0011] Based on the batch weight information of sintered ore in the furnace charge, the bulk density information of sintered ore in the furnace charge, the batch weight information of pellets in the furnace charge, the bulk density information of pellets in the furnace charge, the batch weight information of raw ore in the furnace charge, the bulk density information of raw ore in the furnace charge, the batch weight information of coke in the furnace charge, and the bulk density information of coke in the furnace charge, the batch volume information of the furnace charge is confirmed.

[0012] In an exemplary embodiment of this application, obtaining smelting cycle duration information includes:

[0013] Acquire the volume information between the material line plane and the tuyere centerline plane, the batch material volume information, and the compression ratio information of the furnace charge in the blast furnace;

[0014] Based on the volume information between the material line plane and the tuyere centerline plane, the batch material volume information, the compression rate information of the furnace charge in the blast furnace, and the average number of batches of charge per unit time, the smelting cycle duration information is confirmed.

[0015] In an exemplary embodiment of this application, the pulverized coal injection rate adjustment method further includes:

[0016] The system obtains the baseline fuel ratio before the coke load changes, the batch weight of coke fed into the furnace after the coke load changes, the batch iron content of the ore batch fed into the furnace after the coke load changes, and the time of the first batch of furnace charge fed into the furnace after the coke load changes.

[0017] Based on the baseline fuel ratio before the coke load changes, the batch weight of coke fed into the furnace after the coke load changes, the batch iron content of ore fed into the furnace after the coke load changes, and the average number of batches fed per unit time, the pulverized coal injection rate per unit time is determined.

[0018] In an exemplary embodiment of this application, obtaining information on the batch iron content of the ore batch fed into the furnace after a change in coke load includes:

[0019] Obtain information on the batch weight of sintered ore in the furnace charge, the iron content of sintered ore in the furnace charge, the batch weight of pellets in the furnace charge, the iron content of pellets in the furnace charge, the batch weight of raw ore in the furnace charge, and the iron content of raw ore in the furnace charge.

[0020] Based on the batch weight information of sintered ore in the furnace feed, the iron content information of sintered ore in the furnace feed, the batch weight information of pellets in the furnace feed, the iron content information of pellets in the furnace feed, the batch weight information of raw ore in the furnace feed, and the iron content information of raw ore in the furnace feed, the batch iron content information of the ore batch in the furnace feed after the coke load changes is confirmed.

[0021] Secondly, this application provides a pulverized coal injection rate adjustment system, the pulverized coal injection rate adjustment system comprising:

[0022] The acquisition module is used to acquire information on the average number of batches of material fed per unit time, batch volume, volume between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres, and smelting cycle duration.

[0023] The pulverized coal thermal lag time calculation module determines the pulverized coal thermal lag time based on the average number of batches fed per unit time, batch volume information, and volume information between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres.

[0024] The pulverized coal injection adjustment start time confirmation module confirms the pulverized coal injection adjustment start time based on the pulverized coal thermal lag time, smelting cycle duration, and the first batch of furnace charge time after coke load changes.

[0025] In another exemplary embodiment of this application, the pulverized coal injection rate adjustment system further includes a pulverized coal injection rate confirmation module per unit time.

[0026] The acquisition module is also used to acquire the baseline fuel ratio information before the coke load changes, the batch weight information of coke entering the furnace after the coke load changes, the batch iron quantity information of the ore batch entering the furnace after the coke load changes, and the first batch furnace charge entry time information after the coke load changes.

[0027] The pulverized coal injection quantity confirmation module is used to confirm the pulverized coal injection quantity per unit time based on the baseline fuel ratio before the coke load changes, the batch weight of coke entering the furnace after the coke load changes, the batch iron quantity of ore entering the furnace after the coke load changes, and the average number of batches fed per hour.

[0028] In another aspect, this application also provides an electronic device, the electronic device comprising:

[0029] One or more processors;

[0030] A storage device for storing one or more programs, which, when executed by the one or more processors, cause the electronic device to implement the coal injection quantity adjustment method as described above.

[0031] In another aspect, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a computer's processor, causes the computer to perform the coal injection quantity adjustment method as described above.

[0032] The method, system, electronic equipment, and storage medium for adjusting the pulverized coal injection rate disclosed in this application have the following beneficial effects:

[0033] (1) This application comprehensively considers the average number of batches of material fed per unit time, batch volume information, volume information between the interface between the furnace body and the waist and the center line of the tuyeres, and smelting cycle duration information to determine the start time of pulverized coal injection adjustment, which improves the timeliness of the start time of pulverized coal injection adjustment. It can accurately calculate the start time of pulverized coal injection adjustment when the load of coke in the furnace changes, and can be used to guide blast furnace operators to adjust the furnace condition, avoiding furnace temperature fluctuations and fuel waste.

[0034] (2) This application comprehensively considers the baseline fuel ratio information before the coke load changes, the batch weight information of coke entering the furnace after the coke load changes, the batch iron amount information of the ore batch entering the furnace after the coke load changes, and the first batch furnace charge entering the furnace time information after the coke load changes to confirm the amount of coal injected per unit time. This improves the accuracy of coal injection adjustment per unit time and can be used to guide blast furnace operators to adjust the furnace condition, further avoiding furnace temperature fluctuations and fuel waste.

[0035] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0037] Figure 1 This is a flowchart illustrating a method for adjusting the pulverized coal injection rate, as shown in an exemplary embodiment of this application.

[0038] Figure 2 yes Figure 1 A flowchart of step S110 in the illustrated embodiment for obtaining batch volume information in an exemplary embodiment;

[0039] Figure 3 yes Figure 1 A flowchart of step S110 in the illustrated embodiment for obtaining smelting cycle duration information in an exemplary embodiment;

[0040] Figure 4 This is another exemplary flowchart illustrating a method for adjusting the pulverized coal injection rate in this application;

[0041] Figure 5 yes Figure 4A flowchart of an exemplary embodiment in which step S410 of the embodiment shown obtains the batch iron quantity information of the ore batch after the change of coke load.

[0042] Figure 6 This is a block diagram illustrating a pulverized coal injection rate adjustment system as shown in an exemplary embodiment of this application;

[0043] Figure 7 This is a block diagram illustrating a pulverized coal injection rate adjustment system, as shown in another exemplary embodiment of this application. Detailed Implementation

[0044] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed according to different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0045] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0046] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0047] Please see Figure 1 , Figure 1 This is a flowchart illustrating an exemplary embodiment of the pulverized coal injection rate adjustment method. This method is used to adjust the pulverized coal injection rate in a blast furnace, improve the accuracy of the pulverized coal injection rate adjustment start time, and thus avoid the technical problem of unstable furnace conditions caused by fluctuations in furnace heat.

[0048] like Figure 1 As shown in an exemplary embodiment of this application, the pulverized coal injection rate adjustment method includes at least steps S110, S120, and S130, which are described in detail below:

[0049] Step S110. Obtain information on the average number of batches of material fed per unit time, the volume of material per batch, the volume between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres, and the smelting cycle duration.

[0050] Specifically, the average number of batches fed per unit time can be obtained as follows: Collect the closing signal of the lower sealing valve of the furnace top charge hopper. When the lower sealing valve closes, it indicates that the charge has entered the blast furnace, recorded as 0.5 batches. Record the number of times the lower sealing valve closes within two adjacent hourly time intervals. Then, divide the number of times the lower sealing valve closes within two adjacent hourly time intervals by 2; this is the number of batches fed per unit time, in batches / hour. Collect the number of batches fed per unit time within a preset time period. Then, based on the number of batches fed per unit time within the preset time period, calculate the average number of batches fed per unit time within the preset time period, which is the number of batches fed per unit time, n, in batches / hour. The preset time period can be set manually and will not be elaborated here.

[0051] Specifically, the volume between the interface between the furnace body and the furnace waist and the center line plane of the tuyere can be obtained from the structural drawings of the blast furnace. Then, the volume between the interface between the furnace body and the furnace waist and the center line plane of the tuyere can be calculated using the dimensional information.

[0052] Step S120. Based on the average number of batches of material fed per unit time, the batch volume information, and the volume information between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres, confirm the thermal lag time of pulverized coal.

[0053] Specifically, the thermal hysteresis time of pulverized coal is calculated according to the following formula (I);

[0054] (I)

[0055] In equation (I), T is the thermal hysteresis time of pulverized coal, in hours; The volume is measured in cubic meters (m³) between the interface between the furnace body and the furnace waist and the centerline plane of the tuyeres. 3 ;, This refers to the volume of the batch material, in cubic meters (m³). 3 ; This represents the average number of batches fed per unit time, expressed in batches per hour.

[0056] Step S130. Based on the information of pulverized coal thermal lag time, smelting cycle duration and the first batch of furnace charge input time, confirm the start time of pulverized coal injection adjustment.

[0057] Specifically, the start time for pulverized coal injection adjustment is calculated according to formula (II):

[0058] T(II)

[0059] In formula (II), t0 is the start time for pulverized coal injection adjustment; t0 is the time when the first batch of furnace charge is fed into the furnace after the coke load change; t is the smelting cycle length in hours; T is the thermal lag time in hours.

[0060] In related technologies, blast furnace operators typically adjust the pulverized coal injection rate based on experience, estimating the pulverized coal thermal lag time. However, due to variations in operational experience and furnace operating conditions, the start time of pulverized coal injection adjustments is often inaccurate, leading to fluctuations in furnace temperature and affecting furnace stability. After analyzing the aforementioned solutions, the inventors comprehensively considered factors such as the average number of batches charged per unit time, batch volume information, the volume information between the interface between the furnace body and the furnace waist and the tuyeres centerline, and the smelting cycle duration. This improved the timeliness of the pulverized coal injection rate adjustment start time, allowing for precise calculation of the adjustment start time when the coke load of the feed material changes. This, in turn, guides blast furnace operators in adjusting furnace conditions, avoiding temperature fluctuations and fuel waste.

[0061] Please see Figure 2 , Figure 2 yes Figure 1 The flowchart of step S110, obtaining batch volume information, in the illustrated embodiment is shown in an exemplary embodiment.

[0062] like Figure 2 As shown in an exemplary embodiment of this application, the process of obtaining batch volume information includes steps S210 and S220, which are described in detail below:

[0063] Step S210. Obtain the batch weight information of sintered ore in the furnace charge, the bulk density information of sintered ore in the furnace charge, the batch weight information of pellets in the furnace charge, the bulk density information of pellets in the furnace charge, the batch weight information of raw ore in the furnace charge, the bulk density information of raw ore in the furnace charge, the batch weight information of coke in the furnace charge, and the bulk density information of coke in the furnace charge.

[0064] Step S220. Based on the batch weight information of sintered ore in the furnace charge, the bulk density information of sintered ore in the furnace charge, the batch weight information of pellets in the furnace charge, the bulk density information of pellets in the furnace charge, the batch weight information of raw ore in the furnace charge, the bulk density information of raw ore in the furnace charge, the batch weight information of coke in the furnace charge, and the bulk density information of coke in the furnace charge, confirm the batch volume information.

[0065] Specifically, the batch volume is calculated according to formula (III):

[0066] (III)

[0067] In equation (III), V 批 This refers to the volume of the batch material, in cubic meters (m³). 3 / batch; The weight of sintered ore in the furnace charge is expressed in tons per batch. The bulk density of the sinter in the furnace charge is expressed in t / m³. 3 ; This refers to the batch weight of pellets in the furnace feed, in tons per batch. The bulk density of the pellets in the furnace charge is expressed in t / m³. 3 ; The weight of raw ore in the furnace charge is expressed in tons per batch. The bulk density of the raw ore in the furnace charge is expressed in t / m³. 3 ; This refers to the batch weight of coke in the furnace feed, in tons per batch. The bulk density of coke in the furnace charge is expressed in t / m³. 3 .

[0068] Please see Figure 3 , Figure 3 for Figure 1 The flowchart of step S110, obtaining smelting cycle information, in the illustrated embodiment is shown in an exemplary embodiment.

[0069] like Figure 3 As shown in an exemplary embodiment of this application, the process of obtaining smelting cycle duration information includes steps S310 and S320, which are described in detail below:

[0070] Step S310. Obtain the volume information between the material line plane and the tuyere centerline plane, the batch material volume information, and the compression ratio information of the furnace charge in the blast furnace;

[0071] Specifically, the volume information between the material line plane and the tuyere centerline plane can be obtained from the structural drawings of the blast furnace, and then the volume between the material line plane and the tuyere centerline plane can be calculated using the dimensional information.

[0072] Information on the compression ratio of the furnace charge within the blast furnace can be obtained by consulting books and other materials.

[0073] Step S320. Based on the volume information between the material line plane and the tuyere centerline plane, the batch material volume information, the compression rate information of the furnace charge in the blast furnace, and the average number of batches of charge per unit time, confirm the smelting cycle duration information.

[0074] Specifically, the smelting cycle length is calculated using formula (IV):

[0075] (IV)

[0076] In equation (IV), t is the smelting cycle time in hours; The volume between the material line plane and the air outlet centerline plane, in meters. 3; This refers to the compression ratio of the furnace charge within the blast furnace. This represents the average number of batches fed per unit time, expressed in batches per hour.

[0077] Please see Figure 4 The method for adjusting the pulverized coal injection rate in this application also includes steps S410 and S420, which are described in detail below:

[0078] Step S410. Obtain the baseline fuel ratio information before the coke load changes, the batch weight information of coke fed into the furnace after the coke load changes, the batch iron quantity information of the ore batch fed into the furnace after the coke load changes, and the furnace feeding time information of the first batch of furnace charge after the coke load changes.

[0079] Step S420. Based on the baseline fuel ratio before the coke load changes, the batch weight of coke entering the furnace after the coke load changes, the batch iron content of ore entering the furnace after the coke load changes, and the average number of batches fed per unit time, determine the amount of pulverized coal injected per unit time.

[0080] Specifically, the amount of coal injected per unit time is calculated according to formula (V):

[0081] (V)

[0082] In equation (V), The amount of coal injected per unit time, expressed in t / h; This is the baseline fuel ratio before the coke load changes, in kg / t. This refers to the batch weight of coke entering the furnace after changes in coke load, in t / batch. This represents the batch iron content of the ore batch entering the furnace after the coke load change, in t / batch; This represents the average number of batches fed per unit time, expressed in batches per hour.

[0083] This application comprehensively considers the baseline fuel ratio information before the coke load changes, the batch weight information of coke fed into the furnace after the coke load changes, the batch iron content information of the ore batch fed into the furnace after the coke load changes, and the first batch of furnace charge feeding time information after the coke load changes, to confirm the amount of pulverized coal injected per unit time. This improves the accuracy of adjusting the amount of pulverized coal injected per unit time and can be used to guide blast furnace operators in adjusting the furnace conditions, further avoiding furnace temperature fluctuations and fuel waste.

[0084] Please see Figure 5 , Figure 5 for Figure 4 The flowchart in step S410 of the embodiment shown illustrates the process of obtaining the batch iron quantity information of the ore batch entering the furnace after the change in coke load.

[0085] like Figure 5As shown in an exemplary embodiment of this application, the process of obtaining the batch iron content information of the ore batch fed into the furnace after the coke load changes includes steps S510 and S520, which are described in detail below:

[0086] Step S510. Obtain the batch weight information of sintered ore in the furnace charge, the iron content information of sintered ore in the furnace charge, the batch weight information of pellets in the furnace charge, the iron content information of pellets in the furnace charge, the batch weight information of raw ore in the furnace charge, and the iron content information of raw ore in the furnace charge.

[0087] Step S520. Based on the batch weight information of sintered ore in the furnace charge, the iron content information of sintered ore in the furnace charge, the batch weight information of pellets in the furnace charge, the iron content information of pellets in the furnace charge, the batch weight information of raw ore in the furnace charge, and the iron content information of raw ore in the furnace charge, confirm the batch iron content information of the ore batch after the coke load changes.

[0088] Specifically, the batch iron content of the ore batch entering the furnace after the coke load changes can be calculated using formula (VI):

[0089] (VI);

[0090] In formula (VI), This represents the batch iron content of the ore batch entering the furnace after the coke load change, in t / batch; The weight of sintered ore in the furnace charge is expressed in tons per batch. The iron content of the sinter in the furnace feed is expressed as % (%). The batch weight of pellets in the furnace feed, in t / batch; Iron content of pellets in the furnace feed, in percentages (%) The batch weight of raw ore in the furnace charge, in t / batch; The iron content of the sintered ore in the furnace feed is expressed in units of %.

[0091] Figure 6 This is a block diagram illustrating a pulverized coal injection rate adjustment system 600, as shown in an exemplary embodiment of this application.

[0092] like Figure 6 As shown, in an exemplary embodiment of this application, the pulverized coal injection quantity adjustment system 600 includes an acquisition module 610, a pulverized coal thermal hysteresis duration calculation module 620, and a pulverized coal injection adjustment start time confirmation module 630.

[0093] The acquisition module 610 is used to acquire the average number of batches of material fed per unit time, batch volume information, volume information between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres, and smelting cycle duration information.

[0094] The pulverized coal thermal lag time calculation module 620 determines the pulverized coal thermal lag time based on the average number of batches fed per unit time, batch volume information, and volume information between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres.

[0095] The pulverized coal injection adjustment start time confirmation module 630 confirms the pulverized coal injection adjustment start time based on the pulverized coal thermal lag time, smelting cycle duration, and the first batch of furnace charge time after the coke load change.

[0096] In this embodiment, the pulverized coal injection adjustment system 600 is essentially equipped with several modules to execute the methods described in the above embodiments, so as to achieve precise control of the pulverized coal injection adjustment start time.

[0097] Figure 7 This is a block diagram illustrating a pulverized coal injection quantity adjustment system 700, as shown in another exemplary embodiment of this application.

[0098] like Figure 7 As shown, in another exemplary embodiment of this application, the pulverized coal injection quantity adjustment system 700 further includes a pulverized coal injection quantity confirmation module 740 per unit time.

[0099] The acquisition module 710 is used to acquire the average number of batches of material fed per unit time, batch volume information, volume information between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres, smelting cycle duration information, baseline fuel ratio information before the coke load changes, batch weight information of coke fed into the furnace after the coke load changes, batch weight information of sintered ore in the furnace charge, iron content information of sintered ore in the furnace charge, batch weight information of pellets in the furnace charge, iron content information of pellets in the furnace charge, batch weight information of raw ore in the furnace charge, iron content information of raw ore in the furnace charge, and the first batch of furnace charge feeding time information after the coke load changes. It is also used to confirm the batch iron content information of the batch of ore fed into the furnace after the coke load changes based on the batch weight information of sintered ore in the furnace charge, the batch weight information of sintered ore in the furnace charge, the batch weight information of pellets in the furnace charge, the batch weight information of raw ore in the furnace charge, and the iron content information of raw ore in the furnace charge.

[0100] The pulverized coal thermal lag time calculation module 720 is used to determine the pulverized coal thermal lag time based on the average number of batches fed per unit time, batch volume information, and volume information between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres.

[0101] The pulverized coal injection adjustment start time confirmation module 730 is used to confirm the pulverized coal injection adjustment start time based on the pulverized coal thermal lag time, smelting cycle time information, and the first batch of furnace charge input time information after coke load changes.

[0102] The pulverized coal injection quantity confirmation module 740 is used to confirm the pulverized coal injection quantity per unit time based on the baseline fuel ratio before the coke load changes, the batch weight of coke entering the furnace after the coke load changes, the batch iron quantity of ore entering the furnace after the coke load changes, and the average number of batches fed per hour.

[0103] This application also provides an electronic device, including: a processor; and a memory for storing one or more programs, which, when executed by one or more processors, cause the electronic device to implement the coal injection quantity adjustment method provided in the above embodiments.

[0104] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a computer's processor, causes the computer to perform the coal injection rate adjustment method as described above. This computer-readable storage medium may be included in the electronic device described in the above embodiments, or it may exist independently and not assembled into the electronic device.

[0105] This application also provides a computer program product or computer program that includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the coal injection rate adjustment method provided in the various embodiments described above.

[0106] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0107] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0108] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0109] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A method for adjusting pulverized coal injection rate, characterized in that, The method includes: The system acquires the average number of batches of materials fed per unit time, batch volume information, volume information between the interface between the furnace body and the furnace waist and the center line of the tuyeres, smelting cycle duration information, baseline fuel ratio information before the coke load changes, batch weight information of coke fed into the furnace after the coke load changes, batch weight information of sintered ore in the furnace charge, iron content information of sintered ore in the furnace charge, batch weight information of pellets in the furnace charge, iron content information of pellets in the furnace charge, batch weight information of raw ore in the furnace charge, iron content information of raw ore in the furnace charge, and the furnace charge time information of the first batch of furnace charge after the coke load changes. Based on the average number of batches fed per unit time, batch volume information, and volume information between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres, the thermal lag time of pulverized coal is determined. Based on the information on the thermal lag time of pulverized coal, the duration of the smelting cycle, and the time of the first batch of furnace charge after the change in coke load, the start time of pulverized coal injection adjustment is confirmed. Based on the batch weight information of sintered ore in the furnace charge, the iron content information of sintered ore in the furnace charge, the batch weight information of pellets in the furnace charge, the iron content information of pellets in the furnace charge, the batch weight information of raw ore in the furnace charge, and the iron content information of raw ore in the furnace charge, the batch iron content information of the ore batch in the furnace after the coke load changes is confirmed. Based on the baseline fuel ratio before the coke load changes, the batch weight of coke fed into the furnace after the coke load changes, the batch iron content of ore fed into the furnace after the coke load changes, and the average number of batches fed per unit time, the pulverized coal injection rate per unit time is determined.

2. The method for adjusting the pulverized coal injection rate according to claim 1, characterized in that, Obtaining batch volume information includes: Obtain information on the batch weight of sintered ore in the furnace charge, the bulk density of sintered ore in the furnace charge, the batch weight of pellets in the furnace charge, the bulk density of pellets in the furnace charge, the batch weight of raw ore in the furnace charge, the bulk density of raw ore in the furnace charge, the batch weight of coke in the furnace charge, and the bulk density of coke in the furnace charge. Based on the batch weight information of sintered ore in the furnace charge, the bulk density information of sintered ore in the furnace charge, the batch weight information of pellets in the furnace charge, the bulk density information of pellets in the furnace charge, the batch weight information of raw ore in the furnace charge, the bulk density information of raw ore in the furnace charge, the batch weight information of coke in the furnace charge, and the bulk density information of coke in the furnace charge, the batch volume information of the furnace charge is confirmed.

3. The method for adjusting the pulverized coal injection rate according to claim 1, characterized in that, Information on the duration of the smelting cycle includes: Acquire the volume information between the material line plane and the tuyere centerline plane, the batch material volume information, and the compression ratio information of the furnace charge in the blast furnace; Based on the volume information between the material line plane and the tuyere centerline plane, the batch material volume information, the compression rate information of the furnace charge in the blast furnace, and the average number of batches of charge per unit time, the smelting cycle duration information is confirmed.

4. A pulverized coal injection rate adjustment system, characterized in that, The system includes: The acquisition module is used to acquire the average number of batches of materials fed per unit time, batch volume information, volume information between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres, smelting cycle duration information, baseline fuel ratio information before the coke load changes, batch weight information of coke fed into the furnace after the coke load changes, batch weight information of sintered ore in the furnace charge, iron content information of sintered ore in the furnace charge, batch weight information of pellets in the furnace charge, iron content information of pellets in the furnace charge, batch weight information of raw ore in the furnace charge, iron content information of raw ore in the furnace charge, and the first batch of furnace charge time information after the coke load changes. It is also used to confirm the batch iron content information of the batch of ore fed into the furnace after the coke load changes based on the batch weight information of sintered ore in the furnace charge, the batch weight information of sintered ore in the furnace charge, the batch weight information of pellets in the furnace charge, the batch weight information of raw ore in the furnace charge, and the iron content information of raw ore in the furnace charge. The pulverized coal thermal lag time calculation module determines the pulverized coal thermal lag time based on the average number of batches fed per unit time, batch volume information, and volume information between the interface between the furnace body and the furnace waist and the center line plane of the tuyeres. The pulverized coal injection adjustment start time confirmation module confirms the pulverized coal injection adjustment start time based on the pulverized coal thermal lag time, smelting cycle duration, and the first batch of furnace charge time after coke load changes. The pulverized coal injection quantity confirmation module confirms the pulverized coal injection quantity per unit time based on the baseline fuel ratio before the coke load changes, the batch weight of coke entering the furnace after the coke load changes, the batch iron content of ore entering the furnace after the coke load changes, and the average number of batches of material fed per unit time.

5. An electronic device, characterized in that, The electronic device includes: One or more processors; A storage device for storing one or more programs, which, when executed by the one or more processors, cause the electronic device to implement the coal injection quantity adjustment method as described in any one of claims 1-3.

6. A computer-readable storage medium, characterized in that, It stores a computer program, which, when executed by the computer's processor, causes the computer to perform the coal injection quantity adjustment method as described in any one of claims 1-3.

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