CN113065222B

CN113065222B - Method and device for evaluating state of hearth

Info

Publication number: CN113065222B
Application number: CN202110193418.9A
Authority: CN
Inventors: 陈令坤; 刘栋梁; 鲁婷; 李昕
Original assignee: Wuhan Iron and Steel Co Ltd
Current assignee: Wuhan Iron and Steel Co Ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2023-03-24
Anticipated expiration: 2041-02-20
Also published as: CN113065222A

Abstract

The invention discloses a method and a device for evaluating a hearth state, relates to the technical field of smelting, and mainly aims to solve the problem that the timeliness of an evaluation result is poor in the existing hearth state evaluation process. The method comprises the following steps: acquiring in-cylinder information of a hearth and acquiring charge level parameters, wherein the in-cylinder information comprises index parameters for analyzing the state of the hearth, and the charge level parameters are acquired in real time and are used for representing the distribution condition of the charge level after being distributed through the furnace top; determining dead charge column information in the hearth according to the charge level parameters, wherein the dead charge column information is used for representing the distribution condition and the change state of the dead charge columns; and evaluating the hearth state of the hearth according to the dead charge column information and the in-hearth information. The method is used for the process of evaluating the state of the hearth.

Description

Method and device for evaluating state of hearth

Technical Field

The invention relates to the technical field of smelting, in particular to a method and a device for evaluating the state of a hearth.

Background

Conventionally, in the iron and steel smelting process, the hearth state of a blast furnace plays a significant role in iron making production. The hearth state of the blast furnace not only affects the stable operation in the smelting process, but also affects the service life of the blast furnace. Therefore, it can be said that the hearth state is one of the important factors for determining whether the blast furnace production can achieve the goals of high efficiency, high quality, low consumption, long life, and the like.

At present, in the process of determining the state of a hearth, the existing hearth state evaluation mode is often obtained by analyzing data after the hearth operates for a period of time, that is, conventional hearth state evaluation needs some characteristic phenomena after the hearth operates to reversely deduce and backtrack the hearth state before the hearth operates. However, in practical application, the existing furnace hearth state evaluation process often has hysteresis, so that the existing evaluation method has the problem of poor timeliness when the furnace hearth state is evaluated.

Disclosure of Invention

In view of the above problems, the present invention provides a method and an apparatus for evaluating a hearth condition, and mainly aims to solve the problem of poor timeliness in the evaluation process in the current hearth condition evaluation.

In order to solve the above technical problem, in a first aspect, the present invention provides a method for evaluating a state of a hearth, the method comprising:

acquiring in-cylinder information of a hearth and acquiring charge level parameters, wherein the in-cylinder information comprises index parameters for analyzing the state of the hearth, and the charge level parameters are acquired in real time and are used for representing the distribution condition of the charge level after being distributed through the furnace top;

determining dead charge column information in the hearth according to the charge level parameters, wherein the dead charge column information is used for representing the distribution condition and the change state of the dead charge columns;

and evaluating the hearth state of the hearth according to the dead charge column information and the in-hearth information.

Optionally, the acquiring in-cylinder information of the hearth includes:

acquiring in-cylinder information of the hearth according to a preset frequency through a preset sensor, wherein the in-cylinder information comprises in-cylinder real-time information of a plurality of moments corresponding to preset time intervals and a variation value between in-cylinder real-time information of different moments, and the variation value is a difference value of two times of in-cylinder real-time information between adjacent moments;

wherein the in-cylinder real-time information comprises: coke thermal strength, iron tap tapping difference, furnace bottom center temperature, wind speed, residual slag amount in a hearth, residual iron amount in the hearth, input heat, blanking index, slag peel falling index, carbon consumption in a melting loss reaction and coal gas utilization rate.

Optionally, the charge level parameters include a charge level shape and a charge dropping speed;

the acquiring of the charge level parameters comprises the following steps:

acquiring charge level distribution information through a preset monitoring radar, wherein the preset monitoring radar is monitoring equipment preset on the furnace top, and the charge level distribution information comprises a preset number of distribution points and data corresponding to each distribution point;

determining the shape of the charge level according to the charge level distribution information;

and calculating the charge dropping speed according to the charge level shape.

Optionally, the dead material column information includes a dead material column distribution range and a dead material column updating speed;

the determining dead charge column information in the hearth according to the charge level parameters comprises the following steps:

determining the distribution range of the dead material columns according to the shape of the charge level, wherein the distribution range of the dead material columns is used for representing the distribution condition of the dead material columns;

and determining the updating speed of the dead charge column according to the falling speed of the furnace burden, wherein the updating speed of the dead charge column is used for representing the change state of the dead charge column.

Optionally, after the estimating of the hearth state of the hearth according to the dead charge column information and the in-hearth information, the method further includes:

determining a target material distribution scheme according to the dead material column information and the in-cylinder information, wherein the target material distribution scheme comprises a first material distribution scheme, a second material distribution scheme and a third material distribution scheme; the first material distribution scheme is used for representing and maintaining previous material distribution operation, and the second material distribution scheme and the third material distribution scheme are used for representing and adjusting previous material distribution operation.

Optionally, determining a target material distribution scheme according to the dead material column information and the in-cylinder information includes:

when the updating speed of the dead material column is greater than a first threshold value, the gas utilization rate in the in-cylinder information is determined to be lower than a preset gas utilization rate, and the center temperature of the furnace bottom is greater than a preset furnace temperature, the target material distribution scheme is determined to be the second material distribution scheme, wherein the second material distribution scheme is used for transferring coke to the edge of the blast furnace and the middle ring belt;

when the updating speed of the dead stock column is less than a second threshold value and the tapping difference value of the taphole in the in-cylinder information is greater than a preset tapping difference threshold value, determining that the target material distribution scheme is the third material distribution scheme, wherein the second threshold value is less than the first threshold value, and the third material distribution scheme is used for changing the material distribution precision and reducing convenience for a blast furnace and material distribution of an intermediate ring belt;

when the dead stock pillar distribution range and the dead stock pillar updating speed are within the target range, determining that the target material distribution scheme is the first material distribution scheme, wherein the target range is determined according to the first threshold and the second threshold.

Optionally, after the target material distribution scheme is determined according to the dead material column information and the in-cylinder information, the method further includes:

and controlling automatic material distribution equipment of the hearth, and executing material distribution operation according to the target material distribution scheme.

In a second aspect, an embodiment of the present invention further provides an apparatus for evaluating a state of a hearth, including:

the system comprises an acquisition unit, a data processing unit and a data processing unit, wherein the acquisition unit is used for acquiring in-cylinder information of a hearth and acquiring charge level parameters, the in-cylinder information comprises index parameters for analyzing the state of the hearth, and the charge level parameters are acquired in real time and are used for representing the distribution condition of the charge level after the charge is distributed on the furnace top;

the first determining unit is used for determining dead charge column information in the hearth according to the charge level parameters, wherein the dead charge column information is used for representing the distribution condition and the change state of the dead charge column;

and the evaluation unit is used for evaluating the hearth state of the hearth according to the dead charge column information and the in-hearth information.

Optionally, the obtaining unit includes:

the acquisition module is used for acquiring in-cylinder information of the furnace cylinder through a preset sensor according to a preset frequency, wherein the in-cylinder information comprises in-cylinder real-time information of a plurality of moments corresponding to preset time intervals and a variation value between in-cylinder real-time information of different moments, and the variation value is a difference value of two times of in-cylinder real-time information between adjacent moments;

the acquisition unit includes:

the acquisition module is used for acquiring charge level distribution information through a preset monitoring radar, wherein the preset monitoring radar is monitoring equipment preset on the furnace top, and the charge level distribution information comprises a preset number of distribution points and data corresponding to each distribution point;

the determining module is used for determining the shape of the charge level according to the charge level distribution information;

and the calculating module is used for calculating the falling speed of the furnace burden according to the charge level shape.

the first determination unit includes:

the first determining module is used for determining the dead material column distribution range according to the charge level shape, and the dead material column distribution range is used for representing the distribution condition of the dead material columns;

and the second determining module is used for determining the updating speed of the dead charge column according to the falling speed of the furnace burden, and the updating speed of the dead charge column is used for representing the change state of the dead charge column.

Optionally, the apparatus further comprises:

a second determining unit, configured to determine a target material distribution scheme according to the dead charge column information and the in-cylinder information, where the target material distribution scheme includes a first material distribution scheme, a second material distribution scheme, and a third material distribution scheme; the first material distribution scheme is used for representing and maintaining previous material distribution operation, and the second material distribution scheme and the third material distribution scheme are used for representing and adjusting previous material distribution operation.

Optionally, the second determining unit includes:

the first determining module is used for determining that the target material distribution scheme is the second material distribution scheme when the updating speed of the dead material column is greater than a first threshold value, the gas utilization rate in the in-cylinder information is lower than a preset gas utilization rate, and the center temperature of the furnace bottom is greater than a preset furnace temperature, wherein the second material distribution scheme is used for transferring coke to the edge of the blast furnace and an intermediate ring belt;

the second determining module is used for determining that the target material distribution scheme is the third material distribution scheme when the updating speed of the dead material column is smaller than a second threshold and the tapping difference value of the taphole in the in-cylinder information is larger than a preset tapping difference threshold, wherein the second threshold is smaller than the first threshold, and the third material distribution scheme is used for changing material distribution precision and reducing convenience for a blast furnace and material distribution of an intermediate ring;

a third determining module, configured to determine that the target material distribution scheme is the first material distribution scheme when the dead material column distribution range and the dead material column update speed are within the target range, where the target range is determined according to the first threshold and the second threshold.

Optionally, the apparatus further comprises:

and the control unit is used for controlling the automatic material distribution equipment of the hearth and executing material distribution operation according to the target material distribution scheme.

In order to achieve the above object, according to a third aspect of the present invention, there is provided a storage medium including a stored program, wherein the program is executed to control an apparatus in which the storage medium is located to perform the above described method for hearth state estimation.

In order to achieve the above object, according to a fourth aspect of the present invention, there is provided an apparatus comprising at least one processor, and at least one memory connected with the processor, a bus; the processor and the memory complete mutual communication through the bus; the processor is used for calling the program instructions in the memory and executing the method for evaluating the state of the hearth.

According to the technical scheme, the method and the device for evaluating the state of the hearth provided by the invention have the advantages that the problem of poor timeliness in the evaluation process during the existing hearth state evaluation is solved, the in-hearth information of the hearth is obtained, and the charge level parameter is obtained, wherein the in-hearth information comprises an index parameter for analyzing the state of the hearth, and the charge level parameter is obtained in real time and is used for representing the distribution condition of the charge level after the charge level is distributed on the furnace top; then, determining dead charge column information in the hearth according to the charge level parameters, wherein the dead charge column information is used for representing the distribution condition and the change state of the dead charge columns; and finally, evaluating the hearth state of the hearth according to the dead charge column information and the in-hearth information, thereby realizing the function of evaluating the hearth state. In the scheme, because the charge level parameters are obtained in real time in the process, the dead charge column information obtained based on the charge level parameters can be determined to be real-time data, and then when the state of the furnace hearth is estimated based on the dead charge column information and the in-hearth information, the estimation is carried out according to the data detected in real time, so that the real-time property of the estimation effect is ensured, and the problem of poor timeliness caused by reversely pushing the state of the furnace hearth before the operation for a period of time in the estimation in the prior art is solved. Meanwhile, compared with the existing hearth state evaluation, the method can determine the burden surface distribution condition after material distribution in real time through the burden surface parameters, so that dead charge column information capable of reflecting the real-time state of a dead charge column can be obtained on the basis, the real-time state of the dead charge column can be combined in the hearth state evaluation process, the evaluation basis of the evaluation process is richer, and the accuracy of the evaluation effect is further ensured.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a flow chart of a method for evaluating the state of a hearth according to an embodiment of the present invention;

FIG. 2 is a block diagram illustrating a device for evaluating the status of a hearth according to an embodiment of the present invention;

FIG. 3 is a block diagram of another apparatus for evaluating the status of a hearth according to an embodiment of the present invention;

fig. 4 shows a block diagram of the components of an apparatus for hearth condition evaluation according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In order to solve the problem of poor timeliness in the current state evaluation of the hearth, an embodiment of the present invention provides a method for evaluating a hearth state, as shown in fig. 1, the method includes:

101. and acquiring in-cylinder information of the hearth and acquiring charge level parameters.

The in-cylinder information comprises index parameters for analyzing the state of the furnace cylinder, and the material level parameters are acquired in real time and used for representing the distribution condition of the material level after the material is distributed on the furnace top.

In this step, the in-cylinder information may be understood as various information capable of representing some internal parameters in the cylinder, such as coke heat intensity, taphole tapping difference, furnace bottom center temperature, wind speed, and the like. The coke thermal strength can be obtained according to batches, and the information such as the furnace bottom center temperature and the wind speed can be changed at any time in the operating process of the furnace hearth, so that the coke thermal strength can be obtained and updated at any time. Here, the manner and frequency of acquiring the in-cylinder information are not particularly limited, and may be selected based on the type and property of each type of information. In addition, in this step, because the charge level parameters actually represent the charge level distribution condition after the charge is distributed in the hearth, and the distribution condition changes with the charge distribution mode each time and the operation state in the hearth, the charge level parameters can be acquired from the inside of the hearth in real time through the preset detection device.

102. And determining the information of dead charge columns in the hearth according to the charge level parameters.

And the dead material column information is used for representing the distribution condition and the change state of the dead material column.

During smelting by using a blast furnace, a phenomenon of dead stock columns often occurs, wherein the dead stock columns are coke stock columns which are basically immobile in the center of a blast furnace hearth in the blast furnace iron-making process. I.e. in the centre of the hearth outside the range of the combustion zone, there is a lower part immersed in the liquid iron slag and an upper tip projecting into the conical column of coke in the belly region of the furnace. It is called "dead column" because of its extremely slow consumption and renewal speed. The state of the dead column can therefore be reflected laterally from the tapping position.

In this step, the reason for the formation of the dead material column is a product formed during smelting in the hearth of the blast furnace after the material is distributed by the user, so that the dead material column state in the hearth can be determined based on the charge level parameters in this step, that is, the dead material column information is determined based on the charge level parameters. In this embodiment, the dead charge column information mainly represents a dead charge column distribution condition and a change state, so as to lay a foundation for subsequently evaluating the state of the hearth based on the dead charge column information.

103. And evaluating the hearth state of the hearth according to the dead charge column information and the in-hearth information.

After the dead charge column information is determined in the foregoing step 102, based on the in-cylinder information obtained in step 101, in this step, a comprehensive evaluation may be performed based on the dead charge column information and the in-cylinder information, so as to obtain a hearth state. Compared with the prior art, the dead charge column information can reflect the running state of the hearth from the angle of the residues in the hearth, and compared with the prior art that the hearth state is reversely deduced through the reflection phenomenon after the hearth runs for a period of time, the dead charge column information can be more integrated to analyze the dead charge column condition on the basis of higher timeliness, so that the evaluation result is more accurate.

According to the method for evaluating the state of the hearth, provided by the embodiment, for the problem that the timeliness is poor in the evaluation process in the existing hearth state evaluation, the hearth information of the hearth is obtained, and the charge level parameter is obtained, wherein the hearth information comprises an index parameter for analyzing the hearth state, and the charge level parameter is obtained in real time and is used for representing the distribution condition of the charge level after the charge is distributed on the furnace top; then, determining dead charge column information in the hearth according to the charge level parameters, wherein the dead charge column information is used for representing the distribution condition and the change state of the dead charge columns; and finally, evaluating the hearth state of the hearth according to the dead charge column information and the in-hearth information, thereby realizing the function of evaluating the hearth state. In the scheme, because the charge level parameters are obtained in real time in the process, the dead charge column information obtained based on the charge level parameters can be determined to be real-time data, and then when the state of the furnace hearth is estimated based on the dead charge column information and the in-hearth information, the estimation is carried out according to the data detected in real time, so that the real-time property of the estimation effect is ensured, and the problem of poor timeliness caused by reversely pushing the state of the furnace hearth before the operation for a period of time in the estimation in the prior art is solved. Meanwhile, compared with the existing hearth state evaluation, the method can determine the burden surface distribution condition after material distribution in real time through the burden surface parameters, so that dead charge column information capable of reflecting the real-time state of a dead charge column can be obtained on the basis, the real-time state of the dead charge column can be combined in the hearth state evaluation process, the evaluation basis of the evaluation process is richer, and the accuracy of the evaluation effect is further ensured.

Further, in some embodiments, in the foregoing example step 101, acquiring in-hearth information of the hearth may specifically include, when executed:

acquiring in-hearth information of the hearth according to a preset frequency through a preset sensor; ,

Since the conventional analysis of the state of the hearth is mainly performed in combination with the phenomena caused by several factors among eight factors, such as hearth bottom permeability, blast, balance of iron and slag, furnace temperature, slag system, blanking, furnace type, chemical reaction, and the like. In the embodiment of the present invention, each index corresponding to the above-mentioned multiple factors may be obtained, for example, information such as coke heat intensity, furnace temperature, wind speed, wind temperature, residual slag amount in the furnace hearth, and the like is obtained as in-hearth information for subsequent analysis, which may be specifically shown in table 1.

TABLE 1

In addition, since many pieces of information in the above information are changed in real time, in order to further ensure timeliness of data and facilitate subsequent backtracking of the problem cause, in this embodiment, the in-cylinder information may include in-cylinder real-time information at a plurality of times corresponding to a preset time interval and a change value between in-cylinder real-time information at different times, where the change value is a difference value between two pieces of in-cylinder real-time information between adjacent times.

For example, the specific implementation may be: the Data are stored in the database (Data 1) in real time, and the frequency for evaluating, processing, judging and sampling and calculating the state of the blast furnace hearth can be set to be 15 min/time. Then, the variation of each Data in the database (Data 1) is calculated based on the average value of the parameters, and the variation width, frequency and deviation of each key Data are determined and stored in the database (Data 2). Finally, the post-variable of the parameter is reduced by the pre-variable, the relative change value of each key parameter in the database (Data 1) is calculated and stored in the database (Data 3). So that Data at different times can be saved in Data1, and then Data after a period of time is saved in Data2, and the variation saved in Data3 is calculated.

Therefore, the various information is obtained to be used as the in-cylinder information, so that the analysis and evaluation can be carried out by combining various different parameters when the state of the furnace cylinder is subsequently evaluated, and the accuracy of an analysis result is ensured. Meanwhile, the frequency of each kind of information is acquired at a certain time interval, corresponding information values at different moments are recorded, and change values are recorded, so that specific data can be analyzed according to in-cylinder information after the furnace hearth state is determined subsequently, and backtracking analysis of causes of different furnace hearth states is facilitated.

Further, in some embodiments, since the burden surface condition after distributing may affect the condition of the dead burden column, and the condition of the dead burden column may reflect the state of the hearth from the side surface, in this embodiment, a burden surface parameter needs to be determined so as to determine the condition of the dead burden column in the following step, specifically, the burden surface parameter may include a burden surface shape and a burden dropping speed;

in step 101 of the foregoing embodiment, when the charge level parameter is obtained, the method may specifically include:

and calculating the falling speed of the furnace burden according to the shape of the charge level.

When specifically executed, the process may be as follows:

firstly, the charge level shape measurement data after each distribution is obtained through a preset monitoring radar, 30 distribution points can be set for monitoring in the specific monitoring process, and the specific numerical value of each distribution point is obtained. The preset monitoring radar can be a charge level scanning radar arranged on the furnace top.

Subsequently, after the measurement data of the charge level shape are acquired, the dot data need to be shaped, and the charge level shape can be determined by considering factors such as the speed, charge level deformation and airflow influence during material distribution. The specific determination process may be determined according to an existing calculation method, and is not limited herein.

And finally, calculating the current furnace charge falling speed by combining the material surface conditions of the front and the back material distribution, specifically calculating for 1 time during each material distribution, and simultaneously storing the blanking speed distribution and the corresponding material surface shape in a Data4 database for subsequent reference analysis.

The charge level distribution information is obtained through the preset monitoring radar, and after the charge level shape is determined on the basis, the falling speed of the furnace burden is determined according to the charge level shape, so that the functions of determining the charge level shape and determining the falling speed of the furnace burden based on the charge level distribution information are realized, and a foundation is laid for determining the dead charge column information based on the charge level parameters including the charge level shape and the falling speed of the furnace burden.

Further, in some embodiments, the dead charge column information capable of reflecting the state of the hearth mainly includes a dead charge column distribution condition and a dead charge column update condition, and therefore in this embodiment, the dead charge column information may include a dead charge column distribution range and a dead charge column update speed;

based on this, in the foregoing embodiment, the determining dead charge column information in the hearth according to the charge level parameter may include, when executed:

firstly, determining the distribution range of the dead material columns according to the shape of the charge level, wherein the distribution range of the dead material columns is used for representing the distribution condition of the dead material columns;

and then determining the updating speed of the dead charge column according to the falling speed of the furnace burden, wherein the updating speed of the dead charge column is used for representing the change state of the dead charge column.

Specifically, the determining manner of the dead charge distribution range and the dead charge updating speed in this embodiment may be:

based on the foregoing example, the state of the blast furnace hearth can be evaluated by using the Data in the database (Data 4), only the material discharge speed close to the center of the blast furnace is used as a sample for processing, and considering that the update cycle of the blast furnace hearth is generally 15 days, the material distribution Data of 15 days is adopted for judgment, and the identification characteristics include two items, one item is the material discharge speed of the central area of the blast furnace (namely the dead material column update speed), the other item is the range of the area with large material discharge speed change of the central area of the blast furnace (dead material column distribution range), the identification type is recorded in the database (DM _ lnner _ Pro is used for representing the dead material column distribution range, and DM _ Desent is used for representing the dead material column update four degrees), and the Data in the databases DM _ lnner _ Pro and DM _ Desent reflect the change process of the important phenomenon (dead material column) of the blast furnace hearth.

In this embodiment, the dead-pillar update speed may be set to several gears as needed, wherein 7 gears may be included in the following example.

Here, the speed of the feeding speed of the central area of the blast furnace can be recognized by the pattern recognition technology, and 7 types can be classified according to the speed of the feeding speed of the central area, as shown in table 2.

TABLE 2

Meanwhile, the range of the area (dead charge column distribution range) with large change of the blanking speed in the blast furnace center area is identified, and the range can be divided into 6 gears, as shown in table 3.

TABLE 3

The distribution range of the dead burden columns is determined according to the charge surface shape, the updating speed of the dead burden columns is determined according to the charge falling speed, the specific states of the dead burden columns can be guaranteed, and therefore the condition of the hearth is guaranteed to provide evaluation basis according to the dead burden column information.

Further, after the dead charge column information and the in-hearth information are acquired, the hearth state determination can be realized based on the following modes, as shown in table 4:

TABLE 4

Of course, in a specific evaluation process, the score may be scored based on the weight of each of the different parameters, so as to obtain a comprehensive score as an evaluation result, and of course, the evaluation may be performed in other existing evaluation manners, which is not limited herein.

Further, in some embodiments, after determining the hearth status, it may actually need to perform adjustment of the burden distribution operation based on different hearth statuses, and therefore, in the foregoing embodiment, after the step 103 evaluates the hearth status of the hearth according to the dead charge column information and the in-hearth information, the method may further include:

and determining a target material distribution scheme according to the dead material column information and the in-cylinder information.

The target cloth scheme comprises a first cloth scheme, a second cloth scheme and a third cloth scheme; the first material distribution scheme is used for representing and maintaining previous material distribution operation, and the second material distribution scheme and the third material distribution scheme are used for representing and adjusting previous material distribution operation.

Therefore, the target material distribution scheme is determined through the dead material column information and the in-cylinder information, the operation mode of subsequent material distribution can be determined based on the specific parameters of the furnace cylinder, and the first material distribution scheme for maintaining the previous material distribution operation, the second material distribution scheme for adjusting the previous material distribution operation and the third material distribution scheme are included, so that whether the material distribution mode needs to be adjusted subsequently or not can be determined based on different dead material column information and in-cylinder information, and a foundation is laid for adjusting the state of the furnace cylinder based on the change of the material distribution mode subsequently.

Further, in some embodiments, in the foregoing example, determining a target material distribution scheme according to the dead material column information and the in-cylinder information may be performed, and the performing may include:

Specifically, the execution may be: and if the distribution range DM _ Inner _ Pro of the dead material columns is more than or equal to 50cm and the updating speed DM _ Desent of the dead material columns is more than or equal to 2.3mm/s, maintaining the current material distribution system, namely executing the first material distribution scheme.

When DM _ Defent is more than or equal to 5mm/s, if the blanking speed of the central area is gradually increased, the consumption of dead columns is increased, the center is unblocked, if the utilization ratio of coal gas is lower and CO _ CO2 is less than or equal to 45%, and under the condition that the furnace temperature TQ is more than or equal to 2300MJ/t.hm, a second material distribution operation is executed, namely coke is transferred to the edge and the middle ring zone of the blast furnace, and the matrix is changed into the matrix

Gradually aggravating the center, improving the utilization rate of coal gas and improving the indexes of the blast furnace.

When DM _ Desent is less than or equal to 1.5mm/s, the central blanking speed is gradually reduced in the production process, the middle tends to be accumulated, meanwhile, if a furnace hearth dead stock column is deteriorated, the air permeability is poor, and the tapping difference value HMT of an iron notch is more than or equal to 250 tons, the consumption speed of the dead stock column is reduced, and in this case, a third material distribution scheme can be executed, namely, the blanking precision is stabilized within the acceptable range of the furnace condition, the proper coke adding amount of the center of the blast furnace is ensured, the edge and middle ring belt material distribution is changed, and the matrix is changed into a matrix

And the edge air flow is inhibited through the cloth, so that the dead material column is gradually dredged, and the consumption of the dead material column is accelerated.

From this, through confirming first cloth scheme, second cloth scheme and third cloth scheme as the target cloth scheme, can ensure to confirm subsequent cloth scheme according to different dead stock column information and jar interior information, then ensure to adjust the effect of cloth according to actual conditions on the whole to ensure the stability of hearth state.

Further, in some embodiments, after the determining a target material distribution scheme according to the dead charge column information and the in-cylinder information, the method further includes:

Thus, after the target material distribution scheme is determined, material distribution is carried out through automatic material distribution equipment, such as a programmable automatic material distribution program of a PLC (programmable logic controller), so that the automatic proceeding of material distribution operation is ensured, and the problem of complex operation caused by manual operation is avoided.

Further, as an implementation of the method shown in fig. 1, an embodiment of the present invention further provides a device for evaluating a state of a hearth, which is used for implementing the method shown in fig. 1. The embodiment of the apparatus corresponds to the embodiment of the method, and for convenience of reading, details in the embodiment of the apparatus are not repeated one by one, but it should be clear that the apparatus in the embodiment can correspondingly implement all the contents in the embodiment of the method. As shown in fig. 2, the apparatus includes:

the acquisition unit 21 may be configured to acquire in-cylinder information of a hearth and acquire charge level parameters, where the in-cylinder information includes index parameters that may be used to analyze a state of the hearth, and the charge level parameters are acquired in real time and may be used to characterize a distribution condition of a charge level after material distribution into the hearth;

the first determining unit 22 may be configured to determine dead charge column information in the hearth according to the charge level parameter acquired by the acquiring unit 21, where the dead charge column information may be used to represent a distribution situation and a change state of the dead charge column;

the evaluation unit 23 may be configured to evaluate the hearth state of the hearth according to the dead charge column information determined by the first determination unit 22 and the in-hearth information acquired by the acquisition unit 21.

Further, as shown in fig. 3, the obtaining unit 21 includes:

the acquisition module 211 may be configured to acquire in-cylinder information of the furnace cylinder through a preset sensor according to a preset frequency, where the in-cylinder information includes in-cylinder real-time information at multiple times corresponding to a preset time interval and a variation value between in-cylinder real-time information at different times, and the variation value is a difference between two times of in-cylinder real-time information between adjacent times;

wherein the in-cylinder real-time information includes: coke thermal strength, iron tap tapping difference, furnace bottom center temperature, wind speed, residual slag amount in a hearth, residual iron amount in the hearth, input heat, blanking index, slag peel falling index, carbon consumption in a melting loss reaction and coal gas utilization rate.

Further, as shown in fig. 3, the charge level parameters include the charge level shape and the charge dropping speed;

the acquisition unit 21 includes:

the acquisition module 212 may be configured to acquire charge level distribution information through a preset monitoring radar, where the preset monitoring radar is a monitoring device preset on the furnace top, and the charge level distribution information includes a preset number of distribution points and data corresponding to each distribution point;

a determining module 213, configured to determine the charge level shape according to the charge level distribution information acquired by the acquiring module 212;

the calculating module 214 may be configured to calculate the charge dropping speed according to the charge level shape determined by the determining module 213.

Further, as shown in fig. 3, the dead charge column information includes a dead charge column distribution range and a dead charge column update speed;

the first determination unit 22 includes:

the first determining module 221, configured to determine the dead charge column distribution range according to the charge level shape, where the dead charge column distribution range may be used to represent a distribution condition of the dead charge column;

the second determining module 222 may be configured to determine an update speed of the dead charge column according to the falling speed of the furnace burden, where the update speed of the dead charge column may be used to characterize a change state of the dead charge column.

Further, as shown in fig. 3, the apparatus further includes:

the second determining unit 24 may be configured to determine a target material distribution scheme according to the dead charge column information determined by the first determining unit 22 and the in-cylinder information acquired by the acquiring unit 21, where the target material distribution scheme includes a first material distribution scheme, a second material distribution scheme, and a third material distribution scheme; the first material distribution scheme can be used for representing and maintaining the previous material distribution operation, and the second material distribution scheme and the third material distribution scheme can be used for representing and adjusting the previous material distribution operation.

Further, as shown in fig. 3, the second determination unit 24 includes:

the first determining module 241 may be configured to determine that the target material distribution scheme is the second material distribution scheme when the dead charge column update speed is greater than a first threshold, it is determined that the gas utilization rate in the in-cylinder information is lower than a preset gas utilization rate, and the furnace bottom center temperature is greater than a preset furnace temperature, where the second material distribution scheme may be used to transfer coke to the edge of the blast furnace and the middle ring belt;

a second determining module 242, configured to determine that the target material distribution scheme is the third material distribution scheme when the dead stock column update speed is less than a second threshold and the taphole tapping difference value in the in-cylinder information is greater than a preset tapping difference threshold, where the second threshold is less than the first threshold, and the third material distribution scheme may be used to change material distribution accuracy and reduce convenience for a blast furnace and material distribution in an intermediate zone;

the third determining module 243 may be configured to determine that the target material distribution scheme is the first material distribution scheme when the dead charge column distribution range and the dead charge column update speed are within the target range, where the target range is determined according to the first threshold and the second threshold.

Further, as shown in fig. 3, the apparatus further includes:

and the control unit 25 may be configured to control an automatic material distribution device of the hearth, and perform a material distribution operation according to the target material distribution scheme determined by the second determination unit 24.

By means of the technical scheme, the embodiment of the invention provides a method and a device for evaluating the state of a hearth, and for the problem that the timeliness is poor in the evaluation process in the existing hearth state evaluation, the method and the device provided by the invention have the advantages that the hearth information of the hearth is obtained, and the charge level parameters are obtained, wherein the hearth information comprises index parameters for analyzing the state of the hearth, and the charge level parameters are obtained in real time and are used for representing the distribution condition of the charge level after the charge is distributed on the top of a furnace; then, determining dead charge column information in the hearth according to the charge level parameters, wherein the dead charge column information is used for representing the distribution condition and the change state of the dead charge columns; and finally, evaluating the hearth state of the hearth according to the dead charge column information and the in-hearth information, thereby realizing the function of evaluating the hearth state. In the scheme, because the charge level parameters are obtained in real time in the process, the dead charge column information obtained based on the charge level parameters can be determined to be real-time data, and then when the state of the furnace hearth is estimated based on the dead charge column information and the in-hearth information, the estimation is carried out according to the data detected in real time, so that the real-time property of the estimation effect is ensured, and the problem of poor timeliness caused by reversely pushing the state of the furnace hearth before the operation for a period of time in the estimation in the prior art is solved. Meanwhile, compared with the existing hearth state evaluation, the method can determine the burden surface distribution condition after material distribution in real time through the burden surface parameters, so that dead charge column information capable of reflecting the real-time state of a dead charge column can be obtained on the basis, the real-time state of the dead charge column can be combined in the hearth state evaluation process, the evaluation basis of the evaluation process is richer, and the accuracy of the evaluation effect is further ensured.

The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. One or more than one inner core can be arranged, and the timeliness of the furnace hearth state evaluation effect is improved by adjusting the inner core parameters.

An embodiment of the present invention provides a storage medium having a program stored thereon, which when executed by a processor, implements the method for hearth state evaluation.

The embodiment of the invention provides a processor, which is used for running a program, wherein the program is run to execute the method for evaluating the state of the hearth.

An embodiment of the present invention provides an apparatus 40, as shown in fig. 4, the apparatus includes at least one processor 401, and at least one memory 402 and a bus 403 connected to the processor; the processor 401 and the memory 402 complete communication with each other through the bus 403; the processor 401 is configured to call program instructions in the memory to perform the above-described method for hearth condition evaluation.

The device herein may be a server, a PC, a PAD, a mobile phone, etc.

The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device:

Further, the acquiring in-cylinder information of the hearth includes:

acquiring in-cylinder information of the furnace cylinder through a preset sensor according to a preset frequency, wherein the in-cylinder information comprises in-cylinder real-time information of multiple moments corresponding to a preset time interval and a variation value between in-cylinder real-time information of different moments, and the variation value is a difference value of two times of in-cylinder real-time information between adjacent moments;

Further, the charge level parameters comprise the charge level shape and the charge falling speed;

the step of acquiring the charge level parameters comprises the following steps:

Further, the dead material column information comprises a dead material column distribution range and a dead material column updating speed;

the determining dead charge column information in the hearth according to the charge level parameters comprises:

Further, after the estimating the hearth state of the hearth according to the dead charge column information and the in-hearth information, the method further comprises:

Further, according to the dead material column information and the in-cylinder information, determining a target material distribution scheme comprises:

when the updating speed of the dead material column is smaller than a second threshold value and the tapping difference value of the taphole in the in-cylinder information is larger than a preset tapping difference threshold value, determining that the target material distribution scheme is the third material distribution scheme, wherein the second threshold value is smaller than the first threshold value, and the third material distribution scheme is used for changing the material distribution precision and reducing the convenience of a blast furnace and the material distribution of a middle ring belt;

Further, after the target material distribution scheme is determined according to the dead material column information and the in-cylinder information, the method further includes:

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a device includes one or more processors (CPUs), memory, and a bus. The device may also include input/output interfaces, network interfaces, and the like.

The memory may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip. The memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A method of hearth condition assessment, comprising:

acquiring in-cylinder information of a hearth and acquiring charge level parameters, wherein the in-cylinder information comprises index parameters for analyzing the state of the hearth, and the charge level parameters are acquired in real time and are used for representing the distribution condition of the charge level after the charge is distributed on the furnace top;

determining dead material column information in the hearth according to the charge level parameters, wherein the dead material column information is used for representing the distribution condition and the change state of the dead material columns;

evaluating the hearth state of the hearth according to the dead charge column information and the in-hearth information;

wherein, the in-cylinder information of acquireing the crucible includes:

wherein the in-cylinder real-time information comprises: coke thermal strength, iron notch tapping difference, furnace bottom center temperature, wind speed, residual slag amount in a hearth, residual iron amount in the hearth, input heat, blanking index, slag crust shedding index, carbon consumption in solution loss reaction and coal gas utilization rate;

wherein the charge level parameters comprise the charge level shape and the falling speed of the furnace burden;

wherein, the acquiring charge level parameters comprises:

calculating the falling speed of the furnace burden according to the shape of the charge level;

the dead material column information comprises a dead material column distribution range and a dead material column updating speed;

wherein, the determining dead charge column information in the hearth according to the charge level parameters comprises:

determining the updating speed of the dead charge column according to the falling speed of the furnace burden, wherein the updating speed of the dead charge column is used for representing the change state of the dead charge column;

wherein after the evaluating a hearth state of the hearth according to the dead charge column information and the in-hearth information, the method further comprises:

determining a target material distribution scheme according to the dead material column information and the in-cylinder information, wherein the target material distribution scheme comprises a first material distribution scheme, a second material distribution scheme and a third material distribution scheme; the first material distribution scheme is used for representing and maintaining the previous material distribution operation, and the second material distribution scheme and the third material distribution scheme are used for representing and adjusting the previous material distribution operation;

wherein, according to the dead material column information and the in-cylinder information, determining a target material distribution scheme comprises:

when the dead material column distribution range and the dead material column updating speed are within a target range, determining that the target material distribution scheme is the first material distribution scheme, wherein the target range is determined according to the first threshold and the second threshold.

2. The method of claim 1, wherein after determining a target material distribution scheme based on the dead charge column information and the in-cylinder information, the method further comprises:

3. An apparatus for evaluating a state of a hearth, comprising:

the system comprises an acquisition unit, a data processing unit and a data processing unit, wherein the acquisition unit is used for acquiring in-cylinder information of a hearth and acquiring charge level parameters, the in-cylinder information comprises index parameters used for analyzing the state of the hearth, and the charge level parameters are acquired in real time and used for representing the distribution condition of the charge level after the charge is distributed through the furnace top;

the determining unit is used for determining dead charge column information in the hearth according to the charge level parameters, wherein the dead charge column information is used for representing the distribution condition and the change state of the dead charge columns;

the evaluation unit is used for evaluating the hearth state of the hearth according to the dead charge column information and the in-hearth information;

wherein, the in-cylinder information of acquireing the crucible includes:

wherein the in-cylinder real-time information includes: coke thermal strength, iron notch tapping difference, furnace bottom center temperature, wind speed, residual slag amount in a hearth, residual iron amount in the hearth, input heat, blanking index, slag crust shedding index, carbon consumption in solution loss reaction and coal gas utilization rate;

wherein, the acquiring charge level parameters comprises:

determining a target material distribution scheme according to the dead material column information and the in-cylinder information, wherein the target material distribution scheme comprises a first material distribution scheme, a second material distribution scheme and a third material distribution scheme; the first cloth scheme is used for representing and maintaining the previous cloth operation, and the second cloth scheme and the third cloth scheme are used for representing and adjusting the previous cloth operation;

and when the dead stock pillar distribution range and the dead stock pillar updating speed are within a target range, determining that the target material distribution scheme is the first material distribution scheme, wherein the target range is determined according to the first threshold and the second threshold.

4. A storage medium, characterized in that the storage medium comprises a stored program, wherein the program, when executed, controls an apparatus in which the storage medium is located to perform the method for hearth condition assessment according to any one of claims 1 to 2.

5. An apparatus comprising at least one processor, and at least one memory, bus connected to the processor; the processor and the memory complete mutual communication through the bus; the processor is used for calling the program instructions in the memory and executing the method for evaluating the state of the furnace hearth according to any one of the claims 1 to 2.