A method, apparatus, electronic device and storage medium for controlling the firing of a hot blast stove.

Abstract

This invention discloses a hot blast stove firing control method, device, electronic equipment, and storage medium. When the hot blast stove delivers air, the method acquires the target blast temperature and the initial blast temperature of the current hot blast stove air supply. After the mixing valve opens, it detects the temperature of the mixed air after the cold air in the cold air duct mixes with the air supplied from the hot blast stove. Based on the target blast temperature and the mixed air temperature, it adjusts the opening of the mixing valve to ensure that the temperature difference between the adjusted mixed air temperature and the target blast temperature is within a preset temperature difference range. This ensures that the opening of the mixing valve is adapted to the amount of blast gas and air supplied to the furnace after the current blast. Furthermore, the amount of blast gas and air supplied to the furnace after the current blast is delivered is controlled according to the opening of the mixing valve. The amount of blast gas and air supplied is inversely proportional to the opening of the mixing valve. The opening of the mixing valve reflects the temperature of the blast air supplied to the furnace after the current blast is delivered, and the amount of blast gas and air supplied to the furnace after the current blast can be adjusted according to the opening of the mixing valve to ensure the required blast temperature.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hot blast stove firing control, and particularly relates to a hot blast stove firing control method and device, electronic equipment and a storage medium. BACKGROUND

[0002] Hot blast stove firing is a process of burning gas, and the cost of burning gas accounts for about 1.5-3.5% of the cost of molten iron. The automatic hot blast stove firing system mainly optimizes the burning of gas according to the dome temperature and waste gas temperature set according to the process requirements, that is, to burn the stove well and ensure a certain air temperature sending capacity. However, the value lies in the effective acquisition of the hot blast stove air temperature by the blast furnace, that is, under the condition that the hot blast stove gas energy consumption remains unchanged, the higher the blast furnace air temperature used, the more economical it is; or under the condition that the blast furnace air temperature used remains unchanged, the lower the hot blast stove gas energy consumption, the more economical it is.

[0003] However, in the constant air temperature operation of a large blast furnace, the effective acquisition of the hot blast stove air temperature is not the air temperature of the mixed regulating valve full closing and the hot blast stove full sending, but a certain air temperature level in the pre-sending, middle-sending and post-sending stages, and the mixed air regulating capacity also needs to be ensured to have a certain space for improvement. However, the existing equipment of the automatic hot blast stove firing and the blast furnace air temperature regulation are independent of each other, and it is difficult to meet the economic requirements. SUMMARY

[0004] The present application provides a hot blast stove firing control method to solve the problem of hot blast stove firing control.

[0005] In the first aspect, the present application provides a hot blast stove firing control method, a plurality of hot blast stoves are arranged in parallel, and the plurality of hot blast stoves are connected with a blast furnace through a hot blast pipeline, the hot blast pipeline is also connected with a cold blast pipeline, when a mixed air valve on the cold blast pipeline is opened, the cold blast in the cold blast pipeline and the air sent by the hot blast stove are mixed and then sent to the blast furnace, and the hot blast stove firing control method comprises the following steps.

[0006] When the hot blast stove sends air, the target air temperature of the blast furnace and the initial air temperature of the current hot blast stove sending are acquired;

[0007] After the mixed air valve is opened, the mixed air temperature of the mixed air of the cold blast in the cold blast pipeline and the air sent by the hot blast stove is detected;

[0008] Based on the target air temperature and the mixed air temperature, the opening degree of the mixed air valve is adjusted, so that the temperature difference between the adjusted mixed air temperature and the target air temperature is within a preset temperature difference range;

[0009] The amount of burning gas and the amount of air after the current stove is sent according to the opening degree of the mixed air valve, and the amount of burning gas and the amount of air are inversely proportional to the size of the opening degree of the mixed air valve.

[0010] In a second aspect, the present application provides a hot blast stove burning control device, comprising:

[0011] An initial blast temperature acquisition module is configured to acquire a target blast temperature of the blast furnace and an initial blast temperature of the current hot blast stove blast when the hot blast stove is blowing;

[0012] A mixed blast temperature detection module is configured to detect a mixed blast temperature of the cold blast mixed with the blast blown out by the hot blast stove in the cold blast pipeline after the mixed blast valve is opened;

[0013] A mixed blast valve opening degree adjustment module is configured to adjust the opening degree of the mixed blast valve based on the target blast temperature and the mixed blast temperature, so that the temperature difference between the adjusted mixed blast temperature and the target blast temperature is within a preset temperature difference range;

[0014] A resource adjustment module is configured to control the amount of blast furnace gas and air in the current blast furnace after blowing according to the opening degree of the mixed blast valve, and the amount of blast furnace gas and air is inversely proportional to the size of the opening degree of the mixed blast valve.

[0015] In a third aspect, the present application provides an electronic device, comprising:

[0016] at least one processor; and

[0017] a memory connected to the at least one processor in communication; wherein,

[0018] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the hot blast stove burning control method of the first aspect of the present application.

[0019] In a fourth aspect, the present application provides a computer readable storage medium, which stores computer instructions for enabling a processor to execute the hot blast stove burning control method of the first aspect of the present application when executed.

[0020] The hot blast stove burning control method provided by the embodiment of the present application, a plurality of hot blast stoves are arranged in parallel, and the plurality of hot blast stoves are connected with a blast furnace through hot blast pipes, the hot blast pipes are also connected with cold blast pipes, when a cold blast valve on the cold blast pipes is opened, cold blast in the cold blast pipes is mixed with blast sent out by the hot blast stoves and then sent into the blast furnace, the hot blast stove burning control method comprises the following steps: obtaining a target blast temperature of the blast furnace and an initial blast temperature of current blast sent by the hot blast stove when the hot blast stove sends blast; detecting a mixed blast temperature after the cold blast in the cold blast pipes is mixed with the blast sent out by the hot blast stove after the cold blast valve is opened; and adjusting an opening degree of the cold blast valve based on the target blast temperature and the mixed blast temperature, so that a temperature difference between the adjusted mixed blast temperature and the target blast temperature is within a preset temperature difference range. The opening degree of the cold blast valve can be adapted to blast furnace gas quantity and air quantity of a blast furnace after blast is sent in a current blast furnace, that is, the mixed blast temperature can meet the blast temperature demand of the blast furnace. The blast furnace gas quantity and the air quantity of the blast furnace after blast is sent in the current blast furnace are controlled according to the opening degree of the cold blast valve, and the blast furnace gas quantity and the air quantity are inversely proportional to the opening degree of the cold blast valve. The opening degree of the cold blast valve reflects the blast temperature of blast sent out by the blast furnace after blast is sent in the current blast furnace, that is, the heat degree of blast sent by the blast furnace after blast is sent in the current blast furnace, the greater the opening degree, the higher the heat degree of blast sent by the blast furnace after blast is sent in the current blast furnace, and the smaller the opening degree, the lower the heat degree of blast sent by the blast furnace after blast is sent in the current blast furnace. Therefore, the blast furnace gas quantity and the air quantity of the blast furnace after blast is sent in the current blast furnace can be adjusted according to the opening degree of the cold blast valve, so as to guarantee the blast quality and the blast temperature demand.

[0021] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a flow chart of a hot blast stove burning control method provided by the first embodiment of the present application;

[0024] Figure 2 is a schematic diagram of a blast furnace hot blast stove connection relationship provided by the first embodiment of the present application;

[0025] Figure 3 is a structural schematic diagram of a hot blast stove burning control device provided by the second embodiment of the present application;

[0026] Figure 4 is a structural schematic diagram of an electronic device provided by the third embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0028] Embodiment one

[0029] Figure 1 A flow chart of a hot blast stove burning control method provided by the present embodiment, the present embodiment can be applied to the case of automatic control of economic burning of a blast furnace hot blast stove, the method can be executed by a hot blast stove burning control device, the hot blast stove burning control device can be realized in the form of hardware and / or software, and the hot blast stove burning control device can be configured in an electronic device. As shown in the figure, a plurality of hot blast stoves 1 are arranged in parallel, and the plurality of hot blast stoves 1 are connected with a blast furnace 5 through hot blast pipes 2, the hot blast pipes 2 are also connected with cold blast pipes 3, when a cold blast valve 4 on the cold blast pipes 3 is opened, the cold blast in the cold blast pipes 3 is mixed with the blast sent out by the hot blast stoves 1 and then sent into the blast furnace 5. Among them, the cold blast in the cold blast pipes 3 is from a blast fan 6. Figure 2

[0030] As shown in the figure, the hot blast stove burning control method comprises: Figure 1

[0031] S101, obtaining the target blast temperature of the blast furnace and the initial blast temperature of the current hot blast stove blast when the hot blast stove sends blast.

[0032] The blast furnace hot blast stove is one of the main supporting equipment of the blast furnace in the iron mill, the supply and demand relationship between the blast furnace hot blast stove and the blast furnace for iron making, the blast furnace hot blast stove is a kind of heat accumulator type heat exchanger, which can give the corresponding temperature of the warm blast for the effective actual operation of the blast furnace for iron making, the exhaust capacity should be sufficient, and the supply should be continuous. Therefore, each blast furnace for iron making usually needs to be equipped with 3-4 hot blast stoves, so as to facilitate the heating and blast replacement. The function of the hot blast stove is to continuously provide high-temperature hot blast of 1000 degrees or more for the blast furnace.

[0033] The target blast temperature of the blast furnace can be a pre-set value or a fixed value. The initial blast temperature of the current hot blast stove blast can be detected at the hot blast pipe, as shown in the figure, a first temperature sensor 7 is arranged on the hot blast pipe 2, which can be used to detect the blast temperature of the hot blast sent out by the hot blast stove. Figure 2

[0034] S102, detecting the mixed blast temperature of the cold blast in the cold blast pipe and the blast sent out by the hot blast stove after mixing.​​​

[0035] Since the temperature delivered by the hot blast stove is generally higher than the hot blast temperature required by the blast furnace, i.e. higher than the target blast temperature, a certain amount of cold air needs to be mixed in through the mixing valve to reduce the temperature to the target blast temperature.

[0036] like Figure 2 As shown, in the initial stage of hot blast stove 1, the mixing valve 4 on the cold blast duct 3 can be opened to a small degree. At this time, the cold air in the cold blast duct 3 and the hot air in the hot blast duct 2 are mixed and then introduced into the blast furnace 5. A second temperature sensor 8 is also installed on the hot blast duct 2 after mixing to detect the temperature of the mixed air.

[0037] S103. Adjust the opening of the mixing valve based on the target air temperature and the mixed air temperature so that the temperature difference between the adjusted mixed air temperature and the target air temperature is within the preset temperature difference range.

[0038] When the temperature difference between the mixed blast temperature and the target blast temperature is outside the preset range, it indicates that the current mixed blast temperature does not meet the blast furnace requirements, meaning the mixed blast temperature is either too high or too low compared to the target blast temperature. In this case, the opening of the mixing valve needs to be adjusted. If the mixed blast temperature is too high, the opening of the mixing valve should be increased to increase the cold air flow and lower the mixed blast temperature; if the mixed blast temperature is too low, the opening of the mixing valve should be decreased to reduce the cold air flow and raise the mixed blast temperature.

[0039] In an optional embodiment, adjusting the opening of the mixing valve based on the target air temperature and the mixed air temperature includes: calculating the temperature difference between the target air temperature and the mixed air temperature; determining whether the temperature difference is within a preset temperature difference range; if not, adjusting the opening of the mixing valve based on the temperature difference to obtain the adjusted opening, controlling the mixing valve to open at the adjusted opening, detecting the temperature of the mixed air after mixing the cold air in the cold air duct and the air delivered from the hot air furnace, and returning to the step of calculating the temperature difference between the target air temperature and the mixed air temperature; if yes, determining that the adjustment of the opening of the mixing valve is complete.

[0040] S104. Control the amount of combustion gas and air in the furnace after the air is supplied in the current furnace according to the opening degree of the mixing valve.

[0041] Among them, the amount of furnace gas and air is inversely proportional to the opening degree of the mixing valve.

[0042] The opening degree of the mixing valve reflects the temperature of the air sent out by the furnace after the air is supplied in the current furnace, that is, it reflects the heat level of the air sent out by the furnace after the air is supplied.

[0043] The greater the opening degree of the air mixing valve, the higher the heat of the air supply in the post-air supply row of the furnace, and more cold air needs to be mixed to reduce the air temperature, so the adjustability of the coal quantity and air quantity of the post-air supply row of the furnace is higher. At this time, the coal quantity and air quantity of the post-air supply row of the furnace can be reduced to reduce the air supply temperature of the hot blast stove, save the coal quantity and air quantity of the post-air supply row of the furnace, and improve the economy of the post-air supply row of the furnace.

[0044] The smaller the opening degree of the air mixing valve, the lower the heat of the air supply in the post-air supply row of the furnace, and even if the opening degree of the air mixing valve is further reduced, the air mixing temperature may not be greatly increased, so the adjustability of the coal quantity and air quantity of the post-air supply row of the furnace is lower. At this time, the coal quantity and air quantity of the post-air supply row of the furnace can be increased to increase the air supply temperature of the hot blast stove. Therefore, the coal quantity and air quantity of the post-air supply row of the furnace can be adjusted according to the opening degree of the air mixing valve to ensure the air supply quality and air supply temperature requirements.

[0045] In an optional embodiment, the coal quantity and air quantity of the post-air supply row of the furnace in the current furnace are controlled according to the opening degree of the air mixing valve, including: determining whether the opening degree of the air mixing valve is greater than a preset opening degree; if yes, increasing the coal quantity and air quantity of the post-air supply row of the furnace in the current furnace by a preset first amplitude; and if no, reducing the coal quantity and air quantity of the post-air supply row of the furnace in the current furnace by a preset second amplitude. The preset first amplitude can be equal to or different from the preset second amplitude, and the present application does not limit this.

[0046] The preset opening degree can be a value within 10-20%.

[0047] The hot blast stove furnace control method provided by the embodiment of the present application, when the hot blast stove is air supplied, obtains the target air temperature of the blast furnace and the initial air temperature of the current hot blast stove air supply; after the air mixing valve is opened, the mixed air temperature of the cold air in the cold air pipeline and the air mixed by the hot blast stove is detected; the opening degree of the air mixing valve is adjusted based on the target air temperature and the mixed air temperature, so that the temperature difference between the adjusted mixed air temperature and the target air temperature is within a preset temperature difference range. The opening degree of the air mixing valve can be adapted to the coal quantity and air quantity of the post-air supply row of the furnace in the current furnace, so that the mixed air temperature can meet the air temperature requirements of the blast furnace. The coal quantity and air quantity of the post-air supply row of the furnace in the current furnace are controlled according to the opening degree of the air mixing valve, and the coal quantity and air quantity are inversely proportional to the opening degree of the air mixing valve. The opening degree of the air mixing valve reflects the air temperature of the air supplied by the post-air supply row of the furnace in the current furnace, that is, reflects the heat degree of the air supplied by the post-air supply row of the furnace in the current furnace. The greater the opening degree, the higher the heat of the air supplied by the post-air supply row of the furnace in the current furnace, and the smaller the opening degree, the lower the heat of the air supplied by the post-air supply row of the furnace in the current furnace. Therefore, the coal quantity and air quantity of the post-air supply row of the furnace can be adjusted according to the opening degree of the air mixing valve to ensure the air supply quality and air supply temperature requirements.

[0048] In an optional embodiment, the hot blast stove burning control further comprises: obtaining the burning heat storage parameters of the pre-blast stove stored in the automatic burning system during the pre-blast stove individual blast period, the burning heat storage parameters including the burning gas amount, the burning air amount, the dome temperature and the waste gas temperature; generating the blast temperature demand curve in the preset gradient period after the individual blast starts according to the burning heat storage parameters; determining the blast temperature in the gradient period after the individual blast starts according to the blast temperature demand curve; and adjusting the opening degree of the blast mixing valve based on the blast temperature corresponding to each target time period and the target blast temperature in the gradient period. The opening degree of the blast mixing valve can be adapted to the blast temperature of the pre-blast stove, and the frequent adjustment of the blast mixing valve can be avoided to affect the blast mixing temperature of the blast furnace.

[0049] Exemplarily, the gradient period can be 1, 2, 3 or 4 hours after the individual blast starts. After the opening degree of the blast mixing valve is set, the burning gas amount and the air amount of the pre-blast stove can also be adjusted, and the specific adjustment process is similar to that of the burning gas amount and the air amount of S104. For details, refer to S104, which is not described here.

[0050] In addition, the heat efficiency of the hot blast stove can also be calculated according to the burning heat storage parameters.

[0051] In an optional embodiment, the hot blast stove burning control further comprises: adjusting the opening degree of the cold blast adjusting valve connected to the post-blast stove in a preset first opening degree range and adjusting the opening degree of the cold blast adjusting valve connected to the pre-blast stove in a preset second opening degree range when the blast mixing valve is fully closed, and the value in the preset first opening degree range is greater than the value in the preset second opening degree range.

[0052] As shown in Figure 2 The cold blast adjusting valve 9 is installed on the cold blast branch pipe before the cold blast enters the hot blast stove 1. During the hot blast stove burning period, the cold blast adjusting valve is closed to separate the hot blast stove from the cold blast, so that it is closed more tightly to ensure the smooth operation of the hot blast stove. In actual application, a butterfly valve (cold blast adjusting valve) capable of being automatically opened or closed to a certain extent is generally arranged at the cold blast port. The control mode is that when the high-temperature air of the hot blast stove is about to exceed the set temperature (the target blast temperature of the blast furnace), the cold blast adjusting valve is automatically opened, and when the high-temperature air decreases to the allowable temperature range, the cold blast adjusting valve is automatically closed.

[0053] Because the air supply capacity of each hot blast stove is different, in order to fully utilize the heat resources of each hot blast stove and meet the air temperature requirement of the blast furnace, a larger part of the blast furnace blast air volume can be allocated to the blast air stove in the later stage of blast air supply and with sufficient heat storage, and a smaller part of the blast furnace blast air volume can be allocated to the blast air stove in the earlier stage of blast air supply and with less heat storage, so as to improve the air temperature of the two hot blast stoves at the same time and play the role of air distribution. In an optional example, the first opening range is 85-90%, and the second opening range is 20-30%. After the opening of the cold air regulating valve of the blast air stove in the later stage of blast air supply and the blast air stove in the earlier stage of blast air supply is adjusted within the above opening range, the amount of stove gas and air of the hot blast stove can also be adjusted. The specific adjustment process is similar to that of the amount of stove gas and air in S104, and can be referred to in S104, which is not described here.

[0054] Embodiment two

[0055] Figure 3 A structural schematic diagram of a hot blast stove burning control device provided for embodiment two of the present application is shown in the figure. Figure 3 As shown in the figure, the hot blast stove burning control device comprises:

[0056] An initial air temperature acquisition module 301 is configured to acquire the target air temperature of the blast furnace and the initial air temperature of the current hot blast stove during blast air supply of the hot blast stove;

[0057] A mixed air temperature detection module 302 is configured to detect the mixed air temperature of the mixed air of the cold air in the cold air pipeline and the air supplied by the hot blast stove after the mixed air valve is opened;

[0058] A mixed air valve opening adjustment module 303 is configured to adjust the opening of the mixed air valve based on the target air temperature and the mixed air temperature, so that the temperature difference between the adjusted mixed air temperature and the target air temperature is within a preset temperature difference range;

[0059] A resource adjustment module 304 is configured to control the amount of stove gas and air in the blast air stove in the later stage of blast air supply according to the opening of the mixed air valve, and the amount of stove gas and air is inversely proportional to the size of the opening of the mixed air valve.

[0060] In an optional embodiment, the mixed air valve opening adjustment module 303 comprises:

[0061] A temperature difference value calculation submodule is configured to calculate the temperature difference value between the target air temperature and the mixed air temperature;

[0062] A temperature difference value judgment submodule is configured to judge whether the temperature difference value is within a preset temperature difference range;

[0063] If yes, the content executed by the opening adjustment completion submodule is executed, and if no, the content executed by the opening adjustment submodule is executed.

[0064] an opening degree adjustment submodule, configured to adjust the opening degree of the air mixing valve based on the temperature difference value, to obtain an adjusted opening degree, control the air mixing valve to open at the adjusted opening degree, and detect the mixed air temperature after the cold air in the cold air pipeline mixes with the air delivered by the hot blast stove, and return to execute the content executed by the temperature difference value calculation submodule;

[0065] an opening degree adjustment completion submodule, configured to determine that the opening degree adjustment of the air mixing valve is completed.

[0066] In an optional embodiment, the resource adjustment module 304 comprises:

[0067] an air mixing valve opening degree judgment submodule, configured to determine whether the opening degree of the air mixing valve is greater than a preset opening degree; if yes, execute the content executed by the first adjustment submodule, and if not, execute the content executed by the second adjustment submodule.

[0068] the first adjustment submodule, configured to increase the amount of furnace gas and the amount of air for the furnace after the air delivery in the current furnace firing by a preset first amplitude;

[0069] the second adjustment submodule, configured to decrease the amount of furnace gas and the amount of air for the furnace after the air delivery in the current furnace firing by a preset second amplitude.

[0070] In an optional embodiment, the preset opening degree is 20%.

[0071] In an optional embodiment, the hot blast stove firing control device further comprises:

[0072] a firing heat storage parameter acquisition module, configured to acquire a firing heat storage parameter of the furnace before air delivery in the automatic firing system during the period of air delivery alone in the furnace, the firing heat storage parameter comprising the amount of furnace gas, the amount of air, the dome temperature, and the exhaust gas temperature;

[0073] an air temperature demand curve module, configured to generate an air temperature demand curve in a preset gradient time period after the start of air delivery alone according to the firing heat storage parameter;

[0074] a delivery air temperature determination module, configured to determine the delivery air temperature in the gradient time period after the start of air delivery alone according to the air temperature demand curve;

[0075] an air mixing valve opening degree setting module, configured to adjust the opening degree of the air mixing valve based on the delivery air temperature corresponding to each target time period in the gradient time period and the target air temperature for the target time period.

[0076] In an optional embodiment, each hot blast stove is connected to a cold air pipeline through a cold air regulating valve, and the hot blast stove firing control device further comprises:

[0077] The cold air regulating valve setting module is configured to adjust the opening degree of the cold air regulating valve connected to the post-air supply furnace in a preset first opening degree range when the air mixing valve is fully closed, and to adjust the opening degree of the cold air regulating valve connected to the pre-air supply furnace in a preset second opening degree range, wherein the value in the preset first opening degree range is greater than the value in the preset second opening degree range.

[0078] In an optional embodiment, the preset first opening degree range is 85-90%, and the preset second opening degree range is 20-30%.

[0079] The hot blast furnace burning control device provided by the embodiments of the present application can perform the hot blast furnace burning control method provided by any of the embodiments of the present application, and has the corresponding function modules and beneficial effects of the execution method.

[0080] Embodiment three

[0081] Figure 4 A structural schematic diagram of an electronic device 40 that can be used to implement embodiments of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smart phones, wearable devices (e.g., headsets, glasses, watches, etc.), and other similar computing devices. The components shown here, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit the implementations of the present application described and / or claimed in this document.

[0082] As shown in Figure 4 The electronic device 40 includes at least one processor 41, and a memory, such as a read-only memory (ROM) 42, a random access memory (RAM) 43, etc., which is communicatively connected to the at least one processor 41, wherein the memory stores a computer program that can be executed by the at least one processor. The processor 41 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 42 or the computer program loaded from the storage unit 48 into the random access memory (RAM) 43. In the RAM 43, various programs and data required for the operation of the electronic device 40 can also be stored. The processor 41, the ROM 42, and the RAM 43 are connected to each other through a bus 44. An input / output (I / O) interface 45 is also connected to the bus 44.

[0083] A plurality of components in the electronic device 40 are connected to the I / O interface 45, including: an input unit 46, such as a keyboard, a mouse, etc.; an output unit 47, such as various types of displays, speakers, etc.; a storage unit 48, such as a magnetic disk, an optical disk, etc.; and a communication unit 49, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 49 allows the electronic device 40 to exchange information / data with other devices through a computer network, such as the Internet, and / or various telecommunication networks.

[0084] The processor 41 can be various general and / or special purpose processing components with processing and computing capabilities. Some examples of the processor 41 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 41 performs various methods and processes described above, such as the hot stove firing control method.

[0085] In some embodiments, the hot stove firing control method can be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 48. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 40 via the ROM 42 and / or the communication unit 49. When the computer program is loaded onto the RAM 43 and executed by the processor 41, one or more steps of the hot stove firing control method described above can be performed. Alternatively, in other embodiments, the processor 41 can be configured to perform the hot stove firing control method by any other appropriate means, such as by means of firmware.

[0086] Various implementations of the systems and techniques described above can be realized in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a complex programmable logic device (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0087] Computer programs for implementing the methods of the present application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer program, when executed, can cause instructions defined in the flow charts and / or block diagrams to be implemented. The computer program can be executed entirely on a machine, partially on a machine, partially on a machine as a stand-alone software package and partially on a remote machine or entirely on a remote machine or server.

[0088] In the context of the present application, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer-readable storage medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of a machine-readable storage medium will include one or more lines of a program of instructions in a transitory signal, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0089] To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0090] The systems and techniques described herein can be implemented in a computing system that includes a back end component, e.g., as a data server, or that includes a middleware component, e.g., an application server, or that includes a front end component, e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described herein, or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication, e.g., a communication network. Examples of communication networks include a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0091] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. A server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service.

[0092] It should be understood that the various forms of flow shown above can be re-ordered, added to, or deleted from without departing from the scope of the present disclosure. For example, the steps recited in the present disclosure can be executed in parallel, executed in series, or executed in different orders, as long as the desired results of the technical solutions of the present disclosure can be achieved, and the present disclosure is not limited herein.

[0093] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for controlling the operation of hot blast stoves, a plurality of hot blast stoves being arranged in parallel and each being connected to a blast furnace via a hot blast duct, the hot blast duct being connected to a cold blast duct, cold blast air in the cold blast duct being mixed with hot blast air delivered by the hot blast stoves and being delivered to the blast furnace when a blast mixing valve in the cold blast duct is open, characterized in that The method comprises the following steps: obtaining a target blast temperature of a blast furnace and an initial blast temperature of current blast of a hot blast stove when the hot blast stove is blowing; detecting a mixed blast temperature of mixed blast of cold blast in a cold blast pipeline and blast blown by the hot blast stove after the blast valve is opened; adjusting the opening degree of the blast valve based on the target blast temperature and the mixed blast temperature, so that the temperature difference between the adjusted mixed blast temperature and the target blast temperature is within a preset temperature difference range; controlling the blast furnace gas quantity and the air quantity of the post-blast furnace after the current blast furnace is blown according to the opening degree of the blast valve, and the blast furnace gas quantity and the air quantity are inversely proportional to the opening degree of the blast valve; obtaining blast storage parameters of the post-blast furnace in the automatic blast furnace system before the blast, including blast furnace gas quantity, blast furnace air quantity, dome temperature and waste gas temperature; generating a blast temperature demand curve in a preset gradient time period after the start of the individual blast according to the blast storage parameters; determining the blast temperature in the gradient time period after the start of the individual blast according to the blast temperature demand curve; for each target time period in the gradient time period, adjusting the opening degree of the blast valve based on the blast temperature corresponding to the target time period and the target blast temperature.

2. The method of claim 1, wherein, The method further comprises the following steps: calculating the temperature difference between the target blast temperature and the mixed blast temperature; determining whether the temperature difference is within a preset temperature difference range; if not, adjusting the opening degree of the blast valve based on the temperature difference to obtain an adjusted opening degree, controlling the blast valve to open at the adjusted opening degree, detecting the mixed blast temperature of mixed blast of cold blast in a cold blast pipeline and blast blown by the hot blast stove after the blast valve is opened, and returning to the step of calculating the temperature difference between the target blast temperature and the mixed blast temperature; if yes, determining that the opening degree adjustment of the blast valve is completed.

3. The method of claim 1, wherein, The method further comprises the following steps: determining whether the opening degree of the blast valve is greater than a preset opening degree; if yes, increasing the blast furnace gas quantity and the air quantity of the post-blast furnace after the current blast furnace is blown by a preset first amplitude; if not, decreasing the blast furnace gas quantity and the air quantity of the post-blast furnace after the current blast furnace is blown by a preset second amplitude.

4. The method of claim 3, wherein, The preset opening degree is 20%.

5. The method according to any one of claims 1 to 4, wherein Each hot blast stove is connected to a cold blast pipeline through a cold blast regulating valve, and the method further comprises the following steps: when the blast valve is fully closed, adjusting the opening degree of the cold blast regulating valve connected to the post-blast furnace in a preset first opening degree range, and adjusting the opening degree of the cold blast regulating valve connected to the pre-blast furnace in a preset second opening degree range, wherein the value in the preset first opening degree range is greater than the value in the preset second opening degree range.

6. The method of claim 5, wherein, The preset first opening degree range is 85-90%, and the preset second opening degree range is 20-30%.

7. A hot-blast stove firing control device, characterized in that The method comprises the following steps: an initial blast temperature obtaining module, configured to obtain a target blast temperature of a blast furnace and an initial blast temperature of current blast of a hot blast stove when the hot blast stove is blowing; a mixed blast temperature detecting module, configured to detect a mixed blast temperature of mixed blast of cold blast in a cold blast pipeline and blast blown by the hot blast stove after the blast valve is opened; The mixed air valve opening degree adjusting module is configured to adjust the opening degree of the mixed air valve based on the target air temperature and the mixed air temperature, so that a temperature difference between the adjusted mixed air temperature and the target air temperature is within a preset temperature difference range. The resource adjusting module is configured to control the amount of furnace gas and air for the next heating furnace based on the opening degree of the mixed air valve, and the amount of furnace gas and air is inversely proportional to the opening degree of the mixed air valve. The furnace heat storage parameter acquisition module is configured to acquire the furnace heat storage parameters of the pre-heating furnace stored in the automatic furnace heating system during the pre-heating furnace individual air supply, and the furnace heat storage parameters include the amount of furnace gas, the amount of furnace air, the dome temperature and the exhaust gas temperature. The air temperature demand curve module is configured to generate an air temperature demand curve in a preset gradient time period after the start of the individual air supply based on the furnace heat storage parameters. The air supply temperature determination module is configured to determine the air supply temperature in the gradient time period after the start of the individual air supply based on the air temperature demand curve. The mixed air valve opening degree setting module is configured to adjust the opening degree of the mixed air valve based on the target air temperature and the air supply temperature corresponding to each target time period in the gradient time period.

8. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the hot blast furnace heating control method of any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for enabling the processor to execute the hot blast furnace heating control method of any one of claims 1-6 when executed.

Images