WO2024060289A1

WO2024060289A1 - Method for automatically adjusting furnace temperature of blast furnace, terminal device, and storage medium

Info

Publication number: WO2024060289A1
Application number: PCT/CN2022/122629
Authority: WO
Inventors: 李鹏; 吴映江; 徐永斌
Original assignee: 中冶南方工程技术有限公司
Priority date: 2022-09-21
Filing date: 2022-09-29
Publication date: 2024-03-28
Also published as: CN115509274A

Abstract

The present invention relates to a method for automatically adjusting the furnace temperature of a blast furnace, a terminal device, and a storage medium. The method comprises: S1: acquiring production operation data of a blast furnace; S2: predicting operation parameters on the basis of the production operation data, and predicting the furnace temperature according to prediction results of the operation parameters; S3: performing adjustment calculation according to the prediction results of the furnace temperature, so as to determine an adjustment mode and an adjustment amount; S4: sending, to blast furnace controllers, the adjustment mode and the adjustment amount obtained by means of adjustment calculation, so that the blast furnace controllers adjust the blast furnace according to the received adjustment mode and adjustment amount. According to the present invention, an accurate and efficient control method is provided for automatically adjusting the furnace temperature of a blast furnace, which is an effective means for intelligent and efficient production of the blast furnace.

Description

A blast furnace temperature automatic adjustment method, terminal equipment and storage medium

Technical field

The invention relates to the field of blast furnace ironmaking, and in particular to an automatic adjustment method for blast furnace temperature, terminal equipment and storage media.

Background technique

Furnace temperature is an important state parameter in the blast furnace production process. If the furnace temperature is too high, it will lead to an increase in the coke ratio, reduce the life of the furnace lining, and also affect the air permeability of the blast furnace; while if the furnace temperature is too low, it will lead to insufficient heat in the furnace. It may even cause operating accidents such as furnace cooling. To this end, a variety of furnace temperature prediction models have been developed at home and abroad to judge furnace temperature changes in advance in order to ensure the stability of the furnace temperature.

The furnace temperature prediction model provides a basis for the regulation of furnace temperature. However, at present, furnace temperature adjustment is still carried out by operators based on experience. The effect of adjustment depends largely on the operator's experience and is highly uncertain.

Contents of the invention

In order to solve the above problems, the present invention proposes a blast furnace temperature automatic adjustment method, terminal equipment and storage medium.

The specific plans are as follows:

A blast furnace temperature automatic adjustment method includes the following steps:

S1: Collect blast furnace production operation data;

S2: Predict operating parameters based on production operation data, and predict furnace temperature based on operating parameter prediction results;

S3: Perform adjustment calculations based on the furnace temperature prediction results to determine the adjustment method and amount;

S4: Send the adjustment method and adjustment amount calculated by the adjustment to each blast furnace controller, so that the blast furnace controller adjusts the blast furnace according to the received adjustment method and adjustment amount.

Further, step S1 also includes preprocessing the collected data. The preprocessing includes filtering of air temperature, blast humidity, air volume, coal injection volume, oxygen enrichment volume, top gas composition, molten iron temperature, and cooling stave temperature. and average processing.

Further, the operating parameters include furnace heat index, blanking speed, melting loss reaction carbon amount and slag shedding index.

Further, the adjustment methods include adjusting air temperature, humidity, coal injection, load and additional coke.

Furthermore, during the adjustment process, first determine whether the first adjustment method can keep the furnace temperature change within a certain range; if it can, use the first adjustment method for adjustment; if not, calculate based on the first adjustment method and combine it with the next adjustment method, and so on.

Furthermore, when the furnace temperature changes to cool, the adjustment calculation is performed in the order of air temperature, humidity, coal injection, load, and additional coke; when the furnace temperature changes to hot, the adjustment calculation is performed in the order of coal injection, load, humidity, and air temperature. Adjustment calculations.

Furthermore, the air temperature shall not exceed 50 degrees Celsius each time; the humidity shall not exceed 3 g/cubic meter each time; and the pulverized coal shall not exceed 4 tons/hour each time.

Further, step S5 is included: storing the furnace temperature prediction results, adjustment calculation results, adjustment actions and corresponding furnace temperature changes.

A blast furnace temperature automatic adjustment terminal device, including a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the embodiment of the present invention is implemented. The steps of the above method.

A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method described above in an embodiment of the present invention are implemented.

The present invention adopts the above technical solution to provide an accurate and efficient control method for the automatic adjustment of blast furnace temperature, and is an effective means for intelligent and efficient production of blast furnaces.

Description of the drawings

Figure 1 shows a flow chart of Embodiment 1 of the present invention.

Detailed ways

To further explain various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, and are mainly used to illustrate the embodiments, and can be used to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these contents, those of ordinary skill in the art will be able to understand other possible implementations and advantages of the present invention.

The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

Example 1:

An embodiment of the present invention provides a method for automatically adjusting blast furnace temperature, as shown in Figure 1. The method includes the following steps:

S1: Collect blast furnace production operation data.

The production operation data collected in this embodiment include air temperature, blast humidity, air volume, cloth information (weight, type, specific gravity), furnace charge composition, coal injection amount, oxygen enrichment amount, injection material composition, top gas composition, Molten iron temperature, cooling stave temperature, etc.

This embodiment also includes preprocessing of the collected data. The preprocessing includes filtering and averaging of wind temperature, blast humidity, air volume, coal injection volume, oxygen enrichment volume, top gas composition, molten iron temperature, and cooling stave temperature. deal with.

S2: Predict operating parameters based on production operation data, and predict furnace temperature based on operating parameter prediction results.

In this embodiment, the operating parameters include furnace heat index, blanking speed, melting loss reaction carbon amount, slag shedding index, etc.

The furnace temperature prediction method can use any of fuzzy logic, neural network, regression model, and time series, and is not limited here.

S3: Perform adjustment calculations based on the furnace temperature prediction results to determine the adjustment method and amount.

Adjustment is based on the changes in furnace temperature in the furnace temperature forecast results, using a certain adjustment method and amount to keep the adjusted furnace temperature changes within a certain range. In this embodiment, the adjustment methods include adjusting air temperature, humidity, coal injection, load, additional coke, etc. During the adjustment process, first determine whether the first adjustment method can keep the furnace temperature change within a certain range; if it can, use the first adjustment method to adjust; if not, use the first adjustment method to adjust , calculated in combination with the next adjustment method, and so on. Specifically, when the furnace temperature changes to cool, the adjustment calculation is performed in the order of air temperature, humidity, coal injection, load, and additional coke, and the adjusted furnace temperature change is predicted; when the furnace temperature changes to hot, the adjustment calculation is performed according to the order of coal injection, coal injection, and additional coke. The load, humidity and air temperature are sequentially adjusted and calculated to predict the furnace temperature change after adjustment.

Furthermore, the adjustment amounts of all adjustment methods are subject to operational restrictions. Specifically, the air temperature shall not exceed 50°C each time; the humidity shall not exceed 3g/m ³ each time; and the pulverized coal shall not exceed 4t/h each time.

S4: Send the adjustment method and adjustment amount calculated by the adjustment to each blast furnace controller (such as a PLC controller), so that the blast furnace controller adjusts the blast furnace according to the received adjustment method and adjustment amount.

Further, this embodiment also includes step S5: storing the furnace temperature prediction results, adjustment calculation results, adjustment actions and corresponding furnace temperature changes. The storage method is preferably a structured data table (such as a database, a function application (table, etc.), through the structured data table, the historical information of automatic furnace temperature adjustment can be easily queried, and data can be easily called to optimize the automatic furnace temperature adjustment.

Embodiments of the present invention can predict the changes in furnace temperature of a blast furnace in real time, perform adjustment calculations based on the prediction results, and send the calculation results to the blast furnace controller for adjustment, thereby realizing automatic adjustment of the furnace temperature.

Example 2:

The present invention also provides a blast furnace temperature automatic adjustment terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps in the above-mentioned method embodiment of the first embodiment of the present invention when executing the computer program.

Further, as an executable solution, the blast furnace temperature automatic adjustment terminal device can be a computing device such as a desktop computer, notebook, PDA, cloud server, etc. The blast furnace temperature automatic adjustment terminal device may include, but is not limited to, a processor and a memory. Those skilled in the art can understand that the above-mentioned composition and structure of the blast furnace temperature automatic adjustment terminal equipment is only an example of the blast furnace temperature automatic adjustment terminal equipment, and does not constitute a limitation on the blast furnace temperature automatic adjustment terminal equipment, and may include more than the above. or fewer components, or a combination of certain components, or different components. For example, the blast furnace temperature automatic adjustment terminal device may also include input and output devices, network access devices, buses, etc., which are not covered by the embodiment of the present invention. limited.

Further, as an executable solution, the so-called processor can be a central processing unit (Central Processing Unit, CPU), or other general-purpose processor, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit ( Application Specific Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general processor can be a microprocessor or the processor can be any conventional processor, etc. The processor is the control center of the blast furnace temperature automatic adjustment terminal equipment and uses various interfaces and lines to connect the entire blast furnace. The temperature automatically adjusts various parts of the terminal equipment.

The memory may be used to store the computer program and/or module, and the processor implements the blast furnace by running or executing the computer program and/or module stored in the memory, and calling data stored in the memory. Various functions of the furnace temperature automatic adjustment terminal equipment. The memory may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system and at least one application required for a function; the stored data area may store data created based on the use of the mobile phone, etc. In addition, the memory can include high-speed random access memory, and can also include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card , Flash Card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above method in the embodiment of the present invention are implemented.

If the integrated modules/units of the blast furnace temperature automatic adjustment terminal equipment are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the present invention can implement all or part of the processes in the methods of the above embodiments, and can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can be stored in a computer-readable storage medium. When the program is executed by the processor, the steps of each of the above method embodiments can be implemented. Wherein, the computer program includes computer program code, which may be in the form of source code, object code, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording media, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory) , random access memory (RAM, Random Access Memory) and software distribution media, etc.

Although the invention has been specifically shown and described in conjunction with preferred embodiments, it will be apparent to those skilled in the art that the invention can be modified in form and detail without departing from the spirit and scope of the invention as defined by the appended claims. Various changes are made within the scope of the present invention.

Claims

A blast furnace temperature automatic adjustment method, characterized by including the following steps:

S1: Collect blast furnace production operation data;

S2: Predict operating parameters based on production operation data, and predict furnace temperature based on operating parameter prediction results;

S3: Perform adjustment calculations based on the furnace temperature prediction results to determine the adjustment method and amount;

S4: Send the adjustment method and adjustment amount calculated by the adjustment to each blast furnace controller, so that the blast furnace controller adjusts the blast furnace according to the received adjustment method and adjustment amount.
The blast furnace temperature automatic adjustment method according to claim 1, characterized in that: step S1 also includes preprocessing the collected data, and the preprocessing includes air temperature, blast humidity, air volume, coal injection volume, oxygen enrichment The amount, top gas composition, molten iron temperature, cooling stave temperature filtration and averaging processing.
The blast furnace temperature automatic adjustment method according to claim 1, characterized in that the operating parameters include furnace heat index, blanking speed, melting loss reaction carbon amount and slag skin shedding index.
The blast furnace temperature automatic adjustment method according to claim 1, characterized in that the adjustment method includes adjusting air temperature, humidity, coal injection, load and additional coke.
The blast furnace temperature automatic adjustment method according to claim 1, characterized in that: during the adjustment process, it is first judged whether the first adjustment method can keep the furnace temperature change within a certain range; if it can, the first adjustment method is used Adjust according to the adjustment method; if not, calculate based on the first adjustment method combined with the next adjustment method.
The blast furnace temperature automatic adjustment method according to claim 4, characterized in that: when the furnace temperature changes to cool, the adjustment calculation is performed in the order of air temperature, humidity, coal injection, load, and additional coke; when the furnace temperature changes to cool When it is hot, the adjustment calculation is performed in the order of coal injection, load, humidity and air temperature.
The automatic blast furnace temperature adjustment method according to claim 1 is characterized in that: the wind temperature is adjusted by no more than 50 degrees Celsius each time; the humidity is adjusted by no more than 3 grams/cubic meter each time; and the coal powder is adjusted by no more than 4 tons/hour each time.
The blast furnace temperature automatic adjustment method according to claim 1, further comprising step S5: storing the furnace temperature prediction results, adjustment calculation results, adjustment actions and corresponding furnace temperature changes.
A blast furnace temperature automatic adjustment terminal device, characterized by: including a processor, a memory, and a computer program stored in the memory and running on the processor. When the processor executes the computer program, the following is implemented: The steps of the method according to any one of claims 1 to 8.
A computer-readable storage medium stores a computer program, which is characterized in that: when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.