CN114262762A - Method, device, medium and equipment for adjusting bottom blowing flow of converter - Google Patents
Method, device, medium and equipment for adjusting bottom blowing flow of converter Download PDFInfo
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- CN114262762A CN114262762A CN202111270873.0A CN202111270873A CN114262762A CN 114262762 A CN114262762 A CN 114262762A CN 202111270873 A CN202111270873 A CN 202111270873A CN 114262762 A CN114262762 A CN 114262762A
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Abstract
The invention provides a method, a device, a medium and equipment for adjusting bottom blowing flow of a converter, wherein the method comprises the following steps: acquiring the thickness of the converter bottom of the converter based on a preset thickness measuring period; determining the erosion rate of the hearth lining bricks based on the hearth thickness; adjusting the flow of the bottom blowing main pipeline according to the erosion speed; in the smelting process, acquiring the carbon-oxygen deposit at the end point of the converter based on a preset smelting heat number, and adjusting the bottom blowing flow of each branch pipe in real time; therefore, the flow of the main pipeline is macroscopically adjusted (roughly adjusted) on the basis of the erosion speed, and then the bottom blowing flow of each branch pipe is adjusted in real time on the basis of carbon-oxygen deposition, which is equivalent to finely adjusting the bottom blowing flow, so that the bottom blowing flow of the converter can be accurately controlled, and the steel-making quality is ensured.
Description
Technical Field
The invention belongs to the technical field of converter smelting, and particularly relates to a method, a device, a medium and equipment for adjusting bottom blowing flow of a converter.
Background
At present, the combined blowing condition of the converter has very important significance for smelting key varieties in steel plants and reducing production cost.
After a converter is started up, the bottom blowing flow is easy to control to be larger, and the service life of the air brick is influenced due to overlarge bottom blowing flow; the bottom blowing flow is too small, which may cause the blockage of the air brick. The quality of the air brick has important influence on the quality of molten steel, so the control of bottom blowing flow is important to the steel-making quality.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a method, a device, a medium and equipment for adjusting the bottom blowing flow of a converter, which are used for solving the technical problem that the bottom blowing flow of the converter cannot be accurately controlled in the prior art, so that the steelmaking quality is influenced.
The invention provides a method for adjusting bottom blowing flow of a converter, which comprises the following steps:
acquiring the thickness of the converter bottom of the converter based on a preset thickness measuring period;
determining the erosion rate of the hearth lining bricks based on the hearth thickness;
adjusting the flow of the bottom blowing main pipeline according to the erosion speed;
and in the smelting process, the bottom blowing flow of each branch pipe is adjusted in real time based on the carbon-oxygen deposit at the end point of the converter obtained by the preset smelting number.
In the above solution, the determining the erosion rate of the hearth lining brick based on the hearth thickness includes:
determining the average value of the current furnace bottom thickness according to the thickness of each sampling point of the furnace bottom corresponding to the current thickness measurement;
determining the average value of the thickness of the last furnace bottom according to the thickness of each sampling point of the furnace bottom corresponding to the last thickness measurement at the current time;
determining the erosion speed v1 of the hearth lining brick in the current period according to the formula v1 ═ h1-h 2)/n; wherein, h1 is current stove bottom thickness average value, h2 is last stove bottom thickness average value, n is the converter smelting furnace number between current time thickness measuring moment and last time thickness measuring moment.
In the above-mentioned scheme, according to the flow of bottom-blowing trunk line is adjusted to erosion rate, include:
if the erosion speed is determined to be larger than the upper limit value of the target speed range, acquiring the type of the air brick;
if the type of the air brick is determined to be a porous plug type air supply MHP type air brick, reducing the flow of the main pipeline to 18-22 Nm3/h；
If the type of the air brick is determined to be double-circular-seam type air brick, reducing the flow of the main pipeline to 38-42 Nm3/h。
In the above-mentioned scheme, according to the flow of bottom-blowing trunk line is adjusted to erosion rate, include:
if the erosion speed is determined to be smaller than the lower limit value of the target speed range, acquiring the type of the air brick;
if the type of the air brick is determined to be MHP type air brick, increasing the flow of the main pipeline to 118-122 Nm3/h；
If the type of the air brick is determined to be double-circular-seam type air brick, increasing the flow of the main pipeline to 248-252 Nm3/h。
In the above scheme, the obtaining of the end point carbon oxygen deposit of the converter based on the preset smelting heat number and the real-time adjustment of the bottom blowing flow of each branch pipe comprise:
if the end point carbon oxygen deposit of the converter is determined to be larger than the preset upper limit value of the carbon oxygen deposit, gradually increasing the bottom blowing flow of each branch pipe according to the flow step length until the end point carbon oxygen deposit of the converter meets the preset carbon oxygen deposit range;
and if the carbon-oxygen volume of the converter is determined to be smaller than a preset carbon-oxygen volume lower limit value, gradually reducing the bottom blowing flow of each branch pipe according to the flow step length.
In the above scheme, the obtaining of the end point carbon oxygen deposit of the converter based on the preset smelting heat number and the real-time adjustment of the bottom blowing flow of each branch pipe comprise:
obtaining real-time flow and real-time pressure of a target branch pipe;
if the target branch pipe is determined to be blocked based on the real-time flow and the implementation pressure, adjusting the bottom blowing flow of the target branch pipe in real time based on a preset flow compensation coefficient; the target branch pipe is any one of all branch pipes.
The invention also provides a device for adjusting the bottom blowing flow of the converter, which comprises:
the acquisition unit is used for acquiring the thickness of the converter bottom of the converter based on a preset thickness measuring period;
a determining unit for determining the erosion rate of the hearth lining bricks based on the hearth thickness;
the first adjusting unit is used for adjusting the flow of the bottom blowing main pipeline according to the erosion speed;
and the second adjusting unit is used for acquiring the end point carbon oxygen deposit of the converter based on the preset smelting number in the smelting process and adjusting the bottom blowing flow of each branch pipe in real time.
In the foregoing solution, the determining unit is specifically configured to:
determining the average value of the current furnace bottom thickness according to the thickness of each sampling point of the furnace bottom corresponding to the current thickness measurement;
determining the average value of the thickness of the last furnace bottom according to the thickness of each sampling point of the furnace bottom corresponding to the last thickness measurement at the current time;
determining the erosion speed v1 of the hearth lining brick in the current period according to the formula v1 ═ h1-h 2)/n; wherein, h1 is current stove bottom thickness average value, h2 is last stove bottom thickness average value, n is the converter smelting furnace number between current time thickness measuring moment and last time thickness measuring moment.
The invention also provides a computer-readable storage medium, on which a computer program is stored which, when executed by a processor, implements the method of any one of the above.
The invention also provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of any one of the above when executing the program.
The invention provides a method, a device, a medium and equipment for adjusting bottom blowing flow of a converter, wherein the method comprises the following steps: acquiring the thickness of the converter bottom of the converter based on a preset thickness measuring period; determining the erosion rate of the hearth lining bricks based on the hearth thickness; adjusting the flow of the bottom blowing main pipeline according to the erosion speed; in the smelting process, acquiring the carbon-oxygen deposit at the end point of the converter based on a preset smelting heat number, and adjusting the bottom blowing flow of each branch pipe in real time; therefore, the flow of the main pipeline is macroscopically adjusted (roughly adjusted) on the basis of the erosion speed, and then the bottom blowing flow of each branch pipe is adjusted in real time on the basis of carbon-oxygen deposition, which is equivalent to finely adjusting the bottom blowing flow, so that the bottom blowing flow of the converter can be accurately controlled, and the steel-making quality is ensured.
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 schematic flow chart of a method for adjusting the bottom blowing flow of a converter according to an embodiment of the present invention;
FIG. 2 is a schematic view of furnace bottom thickness measurement data provided by an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an apparatus for adjusting bottom-blowing flow of a converter according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a computer device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
In order to solve the technical problem that the converter bottom blowing flow cannot be accurately controlled in the prior art, and further the steel smelting quality is influenced, the invention provides a method, a device, a medium and equipment for adjusting the converter bottom blowing flow.
In order to better understand the technical solutions, the technical solutions of the embodiments of the present specification are described in detail below with reference to the drawings and specific embodiments, and it should be understood that specific features of the embodiments and embodiments of the present specification are detailed descriptions of the technical solutions of the embodiments of the present specification, and are not limited to the technical solutions of the embodiments of the present specification, and the technical features of the embodiments and embodiments of the present specification may be combined with each other without conflict.
The embodiment provides a method for adjusting bottom blowing flow of a converter, as shown in fig. 1, the method mainly comprises the following steps:
s110, acquiring the thickness of the converter bottom of the converter based on a preset thickness measuring period;
in the embodiment, when a new converter is started from the converter, the thickness of the converter bottom is measured based on a preset thickness measuring period; wherein, the stove bottom includes: the furnace comprises a front furnace bottom, a rear furnace bottom, a central furnace bottom, a left furnace bottom, a right furnace bottom and the like; the thickness measuring period can be one week, half month, one month and the like, and can be set based on actual requirements.
It is worth noting that when the thickness of the furnace lining is measured, the thickness of each sampling point of the furnace bottom is measured, and the thickness corresponding to each sampling point of the furnace bottom is obtained. In this embodiment, the thickness measurement data obtained after measuring the thickness of a certain furnace may be specifically as shown in fig. 2. As can be seen from FIG. 2, the maximum thickness of the furnace bottom is 1413mm, the minimum thickness is 806mm, and the average thickness of each sampling point is 1011 mm.
S111, determining the erosion speed of the hearth lining brick based on the hearth thickness;
after the furnace bottom thickness is obtained, the erosion speed of the furnace bottom lining bricks can be determined based on the furnace bottom thickness.
In an alternative embodiment, determining the erosion rate of the hearth lining bricks based on the hearth thickness comprises:
determining the average value of the current furnace bottom thickness according to the thickness of each sampling point of the furnace bottom corresponding to the current thickness measurement;
determining the average value of the thickness of the last furnace bottom according to the thickness of each sampling point of the furnace bottom corresponding to the last thickness measurement at the current time;
determining the erosion speed v1 of the hearth lining brick in the current period according to the formula v1 ═ h1-h 2)/n; wherein h1 is the average value of the current furnace bottom thickness, h2 is the average value of the previous furnace bottom thickness, and n is the number of the converter smelting furnaces between the current thickness measuring time and the previous thickness measuring time.
Thus, after each thickness measurement, the erosion rate of the outgoing bottom lining brick can be determined.
It should be noted that, during the use of the converter, since the fettling increases at the later stage of the converter smelting, especially the thickness measurement value of the converter bottom may be affected shortly after the fettling, when the smelting heat of the converter reaches the preset heat, the method further includes:
and correcting the erosion rate of the lining brick at the bottom of the furnace.
Specifically, in the later stage of converter smelting (generally, the later stage of the converter smelting is called as the smelting stage when the converter is smelted in 4900-5000 furnaces in this embodiment, and the later stage of smelting can be determined according to the actual situation of the converter smelting in a specific application), the erosion speed v2 of the lining brick at the bottom of the converter in the current period can be determined based on v2 ═ h3-h 4/n, h3 is the lowest value of the current thickness of the bottom of the converter, h2 is the lowest value of the thickness of the last bottom of the converter, and n is the number of the converter smelting furnaces between the current thickness measuring time and the last thickness measuring time.
In the later stage of converter smelting, in order to ensure the operation safety of the converter, the flow of the air brick is reduced by referring to the minimum value of the thickness of the furnace bottom and the erosion speed of the bottom lining brick of the converter so as to reduce the potential safety hazard of operation.
In the embodiment, when the thickness of the furnace lining is measured, the number of the visible air bricks can be monitored in real time, and the number of the visible air bricks is uploaded to the industrial personal computer and displayed on a human-computer interface so that workers can check the number of the visible air bricks in time. If the number of the current visible air bricks is less than the number of the preset air bricks, the situation that some air bricks are blocked is shown, and the working condition can be adjusted in time by the staff. Such as controlling the increase of the bottom blowing flow of the branch pipe corresponding to the blocked air brick, and the like.
S112, adjusting the flow of the bottom blowing main pipeline according to the erosion speed;
after the erosion speed of the furnace bottom lining brick is determined, the flow of the bottom blowing main pipeline can be adjusted according to the erosion speed.
In an alternative embodiment, the adjusting of the flow rate of the main bottom-blowing pipe according to the erosion rate comprises:
if the erosion speed is determined to be larger than the upper limit value of the target speed range, acquiring the type of the air brick;
if the type of the air brick is determined to be a porous plug type air supply (MHP) air brick, reducing the flow of the main pipeline to 18-22 Nm3H, preferably 20Nm3/h。
If the type of the air brick is determined to be double-circular-seam type air brick, reducing the flow of the main pipeline to 38-42 Nm3H, preferably 40Nm3/h。
Specifically, because the bottom-blowing flow rates required by different types of air bricks are different, if the erosion speed is determined to be greater than the upper limit value of the target speed range, the type of the air brick needs to be acquired, and then the corresponding bottom-blowing flow rate is reduced according to the type of the air brick.
In an alternative embodiment, the adjusting of the flow rate of the main bottom-blowing pipe according to the erosion rate comprises:
if the erosion speed is determined to be smaller than the lower limit value of the target speed range, acquiring the type of the air brick;
if the type of the air brick is determined to be MHP type air brick, increasing the flow of the main pipeline to 118-122 Nm3/h；
If the type of the air brick is determined to be double-circular-seam type air brick, the flow of the main pipeline is increased to 248-252 Nm3/h。
Specifically, because the bottom-blowing flow rates required by different types of air bricks are different, if the erosion speed is determined to be greater than the lower limit value of the target speed range, the type of the air brick needs to be acquired, and then the corresponding bottom-blowing flow rate is increased according to the type of the air brick.
After each thickness measurement, the method is equivalent to that the bottom blowing flow of the main pipeline is macroscopically adjusted (roughly adjusted) based on the erosion speed, so that the control precision of the bottom blowing flow is ensured.
It should be noted that, the specific parameters related to the main pipe flow may be adjusted based on actual situations, and are not limited herein.
S113, in the smelting process, the bottom blowing flow of each branch pipe is adjusted in real time based on the preset smelting heat to obtain the end point carbon oxygen deposit of the converter.
But the gas flows into each branch pipe after coming out of the main pipeline, and each branch pipe correspondingly blows to one air brick. In practical application, the working conditions of each branch pipe are different (some branch pipes may be blocked, and some branch pipes are smooth), so that in the smelting process, the bottom blowing flow of each branch pipe is adjusted in real time based on the preset smelting number to obtain the carbon-oxygen deposit at the end point of the converter.
In an alternative embodiment, the method for acquiring the end point carbon-oxygen volume of the converter based on the preset smelting number of the smelting furnace and adjusting the bottom blowing flow of each branch pipe in real time comprises the following steps:
if the end point carbon-oxygen volume of the converter is determined to be larger than the preset upper limit value of the carbon-oxygen volume, gradually increasing the bottom blowing flow of each branch pipe according to the flow step length;
and if the carbon-oxygen volume of the converter is determined to be smaller than the preset carbon-oxygen volume lower limit value, gradually reducing the bottom blowing flow of each branch pipe according to the flow step length until the carbon-oxygen volume at the end point of the converter meets the preset carbon-oxygen volume range.
Wherein, this embodiment can carry out the detection of carbon oxygen product once at every 5 heats of interval, and the flow step length can be 8 ~ 12Nm3H; preferably 10Nm3H is used as the reference value. The predetermined carbon oxygen product range may be 0.0018-0.0028, the upper limit value of the carbon oxygen product may be 0.0028, and the lower limit value of the carbon oxygen product may beAnd was 0.0018.
In an alternative embodiment, the method for acquiring the end point carbon-oxygen volume of the converter based on the preset smelting number of the smelting furnace and adjusting the bottom blowing flow of each branch pipe in real time comprises the following steps:
obtaining real-time flow and real-time pressure of a target branch pipe;
if the target branch pipe is determined to be blocked based on the real-time flow and the real-time pressure, adjusting the bottom blowing flow of the target branch pipe in real time based on a preset flow compensation coefficient; the target branch is any of all the branches.
Specifically, because each branch pipe corresponds to one air brick, the actual operation condition of each branch pipe is different, for example, some branch pipes are normally operated, some branch pipes are slightly blocked, and some branch pipes are severely blocked. Therefore, the embodiment can obtain the real-time flow and the real-time pressure of the target branch pipe; and if the target branch pipe is determined to be blocked based on the real-time flow and the real-time pressure, adjusting the bottom blowing flow of the target branch pipe in real time based on a preset flow compensation coefficient.
In an alternative embodiment, determining that the target branch pipe is blocked based on the real-time flow and the real-time pressure comprises:
if the real-time flow is lower than the preset reference flow value and the real-time pressure is lower than the preset reference pressure value, the target branch pipe is blocked; the reference flow value and the reference pressure value may be set based on the actual condition of each converter, and are not limited herein.
And when the target branch pipe is determined to be blocked, adjusting the bottom blowing flow of the target branch pipe in real time based on a preset flow compensation coefficient, and increasing the bottom blowing flow of the target flow. The flow compensation coefficient can be 0.1-0.5, and can be set based on actual conditions in actual application, which is not limited herein.
For example, when the target branch pipe has a bottom-blowing flow rate set value of 80Nm3At/h, if the compensation coefficient is 0.1, the bottom-blowing flow rate of the target branch pipe can be adjusted to 80Nm3/h。
This allows the bottom-blowing flows of the individual branch lines to be individually adjusted on the basis of the actual operating conditions of each branch line.
The bottom blowing flow of each branch pipe is adjusted in real time based on carbon-oxygen deposition and the actual operation condition of each branch pipe, which is equivalent to fine adjustment of the bottom blowing flow, so that the bottom blowing flow of the converter can be accurately controlled, and the steel smelting quantity is further ensured.
Based on the same inventive concept, the present embodiment further provides a device for adjusting the bottom blowing flow of a converter, as shown in fig. 3, the device includes:
the obtaining unit 31 is configured to obtain a furnace bottom thickness of the converter based on a preset thickness measurement period;
a determination unit 32 for determining an erosion rate of the hearth lining bricks based on the hearth thickness;
the first adjusting unit 33 is used for adjusting the flow of the bottom blowing main pipeline according to the erosion speed;
and the second adjusting unit 34 is used for acquiring the carbon-oxygen deposit at the end point of the converter based on the preset smelting number in the smelting process and adjusting the bottom blowing flow of each branch pipe in real time.
In an alternative embodiment, the determining unit 32 is specifically configured to:
determining the average value of the current furnace bottom thickness according to the thickness of each sampling point of the furnace bottom corresponding to the current thickness measurement;
determining the average value of the thickness of the last furnace bottom according to the thickness of each sampling point of the furnace bottom corresponding to the last thickness measurement at the current time;
determining the erosion speed v1 of the hearth lining brick in the current period according to the formula v1 ═ h1-h 2)/n; wherein, h1 is current stove bottom thickness average value, h2 is last stove bottom thickness average value, the converter smelting furnace number between n current time of thickness measurement and the last time of thickness measurement.
The device may be a computer, a server, or other equipment having a computing or storage function. The device may be a stand-alone server, and is not limited herein.
Since the apparatus described in the embodiment of the present invention is an apparatus used for implementing the method in the embodiment of the present invention, a person skilled in the art can understand the specific structure and the modification of the apparatus based on the method described in the embodiment of the present invention, and thus the detailed description is omitted here. All devices adopted by the method of the embodiment of the invention belong to the protection scope of the invention.
Based on the same inventive concept, the present embodiment further provides a computer apparatus 500, as shown in fig. 5, including a memory 510, a processor 520, and a computer program 511 stored in the memory 510 and running on the processor 520, where the processor 520 executes the computer program 511 to implement the following steps:
acquiring the thickness of the converter bottom of the converter based on a preset thickness measuring period;
determining the erosion rate of the hearth lining bricks based on the hearth thickness;
adjusting the flow of the bottom blowing main pipeline according to the erosion speed;
and in the smelting process, the bottom blowing flow of each branch pipe is adjusted in real time based on the carbon-oxygen deposit at the end point of the converter obtained by the preset smelting number.
In particular embodiments, any of the foregoing embodiments may be implemented when processor 520 executes computer program 511.
Since the computer device described in this embodiment is a device used for implementing the method for adjusting the bottom blowing flow rate of the converter according to the embodiment of the present application, a person skilled in the art can understand a specific implementation manner of the computer device of this embodiment and various variations thereof based on the methods described in the foregoing embodiments of the present application, and therefore, how to implement the method in this embodiment by the server is not described in detail herein. The equipment used by those skilled in the art to implement the methods in the embodiments of the present application is within the scope of the present application.
Based on the same inventive concept, the present embodiment provides a computer-readable storage medium 500, as shown in fig. 5, on which a computer program 511 is stored, the computer program 511 implementing the following steps when being executed by a processor:
acquiring the thickness of the converter bottom of the converter based on a preset thickness measuring period;
determining the erosion rate of the hearth lining bricks based on the hearth thickness;
adjusting the flow of the bottom blowing main pipeline according to the erosion speed;
and in the smelting process, the bottom blowing flow of each branch pipe is adjusted in real time based on the carbon-oxygen deposit at the end point of the converter obtained by the preset smelting number.
In a specific implementation, the computer program 611, when executed by a processor, may implement any of the embodiments described above.
The method, the device, the medium and the equipment for adjusting the bottom blowing flow of the converter, provided by the invention, have the beneficial effects that at least:
the invention provides a method, a device, a medium and equipment for adjusting bottom blowing flow of a converter, wherein the method comprises the following steps: acquiring the thickness of the converter bottom of the converter based on a preset thickness measuring period; determining the erosion rate of the hearth lining bricks based on the hearth thickness; adjusting the flow of the bottom blowing main pipeline according to the erosion speed; in the smelting process, acquiring the carbon-oxygen deposit at the end point of the converter based on a preset smelting heat number, and adjusting the bottom blowing flow of each branch pipe in real time; therefore, the flow of the main pipeline is macroscopically adjusted (roughly adjusted) on the basis of the erosion speed, and then the bottom blowing flow of each branch pipe is adjusted in real time on the basis of carbon-oxygen deposition, which is equivalent to finely adjusting the bottom blowing flow, so that the bottom blowing flow of the converter can be accurately controlled, and the steel-making quality is ensured.
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 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.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. A method of adjusting the bottom blowing flow of a rotary kiln, the method comprising:
acquiring the thickness of the converter bottom of the converter based on a preset thickness measuring period;
determining the erosion rate of the hearth lining bricks based on the hearth thickness;
adjusting the flow of the bottom blowing main pipeline according to the erosion speed;
and in the smelting process, the bottom blowing flow of each branch pipe is adjusted in real time based on the carbon-oxygen deposit at the end point of the converter obtained by the preset smelting number.
2. The method of claim 1, wherein said determining a rate of erosion of a hearth lining brick based on said hearth thickness comprises:
determining the average value of the current furnace bottom thickness according to the thickness of each sampling point of the furnace bottom corresponding to the current thickness measurement;
determining the average value of the thickness of the last furnace bottom according to the thickness of each sampling point of the furnace bottom corresponding to the last thickness measurement at the current time;
determining the erosion speed v1 of the hearth lining brick in the current period according to the formula v1 ═ h1-h 2)/n; wherein, h1 is current stove bottom thickness average value, h2 is last stove bottom thickness average value, n is the converter smelting furnace number between current time thickness measuring moment and last time thickness measuring moment.
3. The method of claim 1, wherein said adjusting the flow of the main bottom-blowing pipe based on said erosion rate comprises:
if the erosion speed is determined to be larger than the upper limit value of the target speed range, acquiring the type of the air brick;
if the type of the air brick is determined to be a porous plug type air supply MHP type air brick, reducing the flow of the main pipeline to 18-22 Nm3/h；
If the type of the air brick is determined to be double-circular-seam type air brick, reducing the flow of the main pipeline to 38-42 Nm3/h。
4. The method of claim 1, wherein said adjusting the flow of the main bottom-blowing pipe based on said erosion rate comprises:
if the erosion speed is determined to be smaller than the lower limit value of the target speed range, acquiring the type of the air brick;
if the type of the air brick is determined to be MHP type air brick, increasing the flow of the main pipeline to 118-122 Nm3/h；
If the type of the air brick is determined to be double-circular-seam type air brick, increasing the flow of the main pipeline to 248-252 Nm3/h。
5. The method of claim 1, wherein the obtaining of the converter end point carbon-oxygen deposit based on the preset smelting heat number and the real-time adjustment of the bottom blowing flow of each branch pipe comprise:
if the end point carbon oxygen deposit of the converter is determined to be larger than the preset upper limit value of the carbon oxygen deposit, gradually increasing the bottom blowing flow of each branch pipe according to the flow step length until the end point carbon oxygen deposit of the converter meets the preset carbon oxygen deposit range;
and if the carbon-oxygen volume of the converter is determined to be smaller than a preset carbon-oxygen volume lower limit value, gradually reducing the bottom blowing flow of each branch pipe according to the flow step length.
6. The method of claim 1, wherein the obtaining of the converter end point carbon-oxygen deposit based on the preset smelting heat number and the real-time adjustment of the bottom blowing flow of each branch pipe comprise:
obtaining real-time flow and real-time pressure of a target branch pipe;
if the target branch pipe is determined to be blocked based on the real-time flow and the implementation pressure, adjusting the bottom blowing flow of the target branch pipe in real time based on a preset flow compensation coefficient; the target branch pipe is any one of all branch pipes.
7. An apparatus for regulating the bottom-blowing flow of a converter, said apparatus comprising:
the acquisition unit is used for acquiring the thickness of the converter bottom of the converter based on a preset thickness measuring period;
a determining unit for determining the erosion rate of the hearth lining bricks based on the hearth thickness;
the first adjusting unit is used for adjusting the flow of the bottom blowing main pipeline according to the erosion speed;
and the second adjusting unit is used for acquiring the carbon-oxygen deposit at the end point of the converter based on the preset smelting number in the smelting process and adjusting the bottom blowing flow of each branch pipe in real time.
8. The apparatus of claim 7, wherein the determination unit is specifically configured to:
determining the average value of the current furnace bottom thickness according to the thickness of each sampling point of the furnace bottom corresponding to the current thickness measurement;
determining the average value of the thickness of the last furnace bottom according to the thickness of each sampling point of the furnace bottom corresponding to the last thickness measurement at the current time;
determining the erosion speed v1 of the hearth lining brick in the current period according to the formula v1 ═ h1-h 2)/n; wherein, h1 is current stove bottom thickness average value, h2 is last stove bottom thickness average value, n is the converter smelting furnace number between current time thickness measuring moment and last time thickness measuring moment.
9. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the method of any one of claims 1 to 6.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1 to 6 when executing the program.
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