A blast furnace burdening system, method, device and computer readable storage medium

Abstract

The present application relates to a kind of blast furnace material speed calculation system, belong to intelligent metallurgy field, comprising: data acquisition module, for obtaining the material line depth when loading material, corresponding time and the weight data of material;Data preprocessing module is used to judge the validity of single or multiple measurement data, and the average value of the material line depth effective value of the current material to be laid is calculated, and the data is saved;Material descending speed calculation module is used to process and calculate according to the collected data, obtain the latest material descending speed;Storage module is used to store the collected data and calculated data.The present application also provides a kind of blast furnace material speed calculation method, equipment and computer readable storage medium.

Description

Technical Field

[0001] This invention belongs to the field of intelligent metallurgy and relates to a blast furnace charge rate calculation system, method, device and computer-readable storage medium. Background Technology

[0002] Blast furnace ironmaking is currently the most common smelting equipment in steelmaking processes. Raw materials and fuels are added from the top of the blast furnace and undergo a series of low-temperature and high-temperature physicochemical reactions within the furnace, ultimately transforming into three products: molten iron, gas, and blast furnace slag. Because the blast furnace operates under high temperature and pressure, direct observation is difficult. Currently, the reaction rate within the blast furnace is typically characterized by the number of batches of material added per hour. However, since the weight of each batch is adjustable, the number of batches added per hour is insufficient to represent the actual smelting speed. The material descent rate, on the other hand, already considers the influence of batch weight. Therefore, the descent rate of material within the blast furnace is a better indicator of the current chemical reaction rate or smelting intensity within the furnace. A faster descent rate indicates a faster reaction rate in the lower part of the blast furnace, which is more practically significant for production operations. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a blast furnace material rate calculation system, method, device and computer-readable storage medium to solve the problem that the existing material rate index has poor representativeness of the smelting speed in the blast furnace.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] In a first aspect, the present invention provides a blast furnace charge rate calculation system, comprising:

[0006] The data acquisition module is used to acquire data on the depth of the feed line, the corresponding time, and the weight of the material when it is loaded.

[0007] The data preprocessing module is used to determine the validity of one or more measurement data, calculate the average value of the effective value of the material line depth of the material to be laid, and save the data.

[0008] The material descent rate calculation module is used to process and calculate the collected data to obtain the latest material descent rate;

[0009] The storage module is used to store the collected data and the calculated data.

[0010] Furthermore, the data acquisition module includes a blast furnace charge depth measuring device, a timing device, and a weighing device; the blast furnace charge depth measuring device is used to obtain the charge depth at the furnace roar height position when various materials are charged into the blast furnace, and the timing device obtains the corresponding time data; the weighing device is used to weigh the materials before charging to obtain weight data.

[0011] Furthermore, the data preprocessing module calculates the effective average value of the material line depth based on multiple material line depth measuring devices at the top of the blast furnace, with each material line measuring device measuring the actual material line depth L. i ∈[s-α, s+α], otherwise not included in the mean, where s is the set material line depth value collected during this material laying, and α is the deviation threshold. The specific calculation method for the effective average value of the material line is as follows:

[0012]

[0013] In the formula, n is the number of effective material line depth data.

[0014] Furthermore, the material descent rate calculation module first calculates the theoretical material height of two adjacent batches of material a and material b:

[0015]

[0016]

[0017] Where m a m b ρ represents the weights of material a and material b, respectively; a ρ b , where are the bulk densities of material a and material b, respectively; S is the cross-sectional area of ​​the furnace stoker.

[0018] Then calculate the rate of descent of the furnace charge during the feeding of material a:

[0019]

[0020] Where L a and L b T represents the measured depth of the feed line before material a and material b are loaded, respectively. a and T b These are the corresponding depth measurement times.

[0021] Secondly, the present invention provides a method for calculating blast furnace charge rate, comprising the following steps:

[0022] Data on the height of the furnace roar and the corresponding time when various materials are charged into the blast furnace are obtained. The theoretical volume of the charged material is calculated based on the bulk density of the material, and the theoretical height at the furnace roar is calculated based on the cross-sectional area of ​​the furnace roar.

[0023] The average descent speed of the material during the period from the current loading to the loading of the next material is calculated by taking the theoretical height of the loaded material, the material line depth when loading the current material, and the material line depth when loading the next material.

[0024] Furthermore, the effective average value of the material line is calculated based on multiple material line measuring devices at the top of the blast furnace, and the actual material line depth L is measured by each material line measuring device. i ∈[s-α, s+α], otherwise not included in the mean, where s is the set material line depth value collected during this material laying, and α is the deviation threshold. The specific calculation method for the effective average value of the material line is as follows:

[0025]

[0026] In the formula, n is the number of effective material line depth data.

[0027] Furthermore, first calculate the theoretical height of materials a and b in two adjacent batches:

[0028]

[0029]

[0030] Where m a m b ρ represents the weights of material a and material b, respectively; a ρ b , where are the bulk densities of material a and material b, respectively; S is the cross-sectional area of ​​the furnace stoker.

[0031] Then calculate the rate of descent of the furnace charge during the feeding of material a:

[0032]

[0033] Where L a and L b T represents the measured depth of the feed line before material a and material b are loaded, respectively. a and T b These are the corresponding depth measurement times.

[0034] In another aspect, the present invention provides a blast furnace feed rate calculation device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the calculation steps described above.

[0035] The fourth embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, performs the data acquisition and storage and calculation result storage as described above.

[0036] The beneficial effects of this invention are as follows: The blast furnace charge rate calculation system provided in this application takes into account the influence of the change in the batch weight of the blast furnace charge, and the use of the material descent rate value to characterize the reaction rate and smelting intensity in the blast furnace is more representative. In operation, the real-time material descent rate can be calculated more timely and sensitively, which is convenient for production operation management and realizes the stable and smooth operation of the blast furnace.

[0037] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0038] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0039] Figure 1 This is a block diagram of the blast furnace feed rate calculation system in an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram of the material descent process in the blast furnace in an embodiment of the present invention, wherein (a)-(c) correspond to multiple steps of the blast furnace material rate calculation method in sequence. Detailed Implementation

[0041] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0042] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0043] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0044] This invention provides a blast furnace burden rate calculation system, which employs the blast furnace burden rate calculation method described below, combined with... Figure 1 As shown, the system includes: a data acquisition module, used to acquire the material line depth, corresponding time, and material weight data when the material is loaded, and to save the data;

[0045] The data preprocessing module is used to determine the validity of measurement data from one or more material line depth measuring devices, calculate the average value of the valid material line depth of the material to be laid, and save the data.

[0046] The material descent speed calculation module is used to process and calculate the acquired material line depth, material weight, and data before material placement to obtain the latest material descent speed and save the data.

[0047] This system takes into account the impact of changes in the blast furnace charge weight and uses the material descent rate to characterize the reaction rate and smelting intensity within the blast furnace, which is more representative. During operation, the real-time material descent rate can be calculated more promptly and sensitively, facilitating production operation management and ensuring stable and smooth operation of the blast furnace.

[0048] Example 1

[0049] A method for calculating blast furnace charge rate, combined with Figure 2 As shown in (a)-(c), the steps include the following:

[0050] (1) Real-time data of process control parameters during blast furnace smelting are collected by PLC or other external data sources. Let the measured values ​​of the material line depth before coke loading be L. a1 =1.5m, L a2 =1.53m, L a3 = 2.2m, the corresponding depth measurement time is T a The measured depth of the feed line before ore loading is L. b1 =1.61m, L b2 =1.65m, L b3=1.52m, corresponding to the depth measurement time T b .

[0051] (2) Based on the effective average value of the material line calculated by multiple material line measuring devices at the top of the blast furnace, the actual material line depth L measured by each material line measuring device is obtained. i ∈[s-α, s+α], otherwise not included in the mean, where s is the set material line depth value collected during this material laying, and s is the value when coke is loaded during this measurement. a =1.5, s b =1.6, α is the deviation threshold, usually α=0.2. The effective average value of the feed line when loading coke and ore is calculated as follows:

[0052]

[0053]

[0054] (3) The weights of the coke and ore loaded into the container are obtained from the weighing device, respectively m a =15000kg, m b =85000 kg, coke bulk density ρ a =500kg / m 3 ore bulk density ρ b =2000kg / m 3 The volume of material charged in this batch was calculated. Based on the furnace cross-sectional area S = 58.088 m²,... 2 The theoretical height of the material to be discharged in this batch is calculated as follows:

[0055]

[0056]

[0057] (4) The time T taken to place the coke this time b -T a =480s, then the calculation method for the average descent speed of the furnace charge during coke feeding is as follows:

[0058]

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A blast furnace charge rate calculation system, characterized in that: include: The data acquisition module is used to acquire data on the depth of the feed line, the corresponding time, and the weight of the material when it is loaded. The data preprocessing module is used to determine the validity of one or more measurement data, calculate the average value of the effective value of the material line depth of the material to be laid, and save the data. The material descent rate calculation module is used to process and calculate the collected data to obtain the latest material descent rate; The storage module is used to store the collected data and the calculated data; The data preprocessing module calculates the effective average value of the material line depth based on multiple material line depth measuring devices at the top of the blast furnace, with each material line measuring device measuring the actual material line depth. Otherwise, it will not be included in the mean, where s is the set material depth value collected during this fabric application. The specific calculation method for the effective average value of the material line, which serves as the deviation threshold, is as follows: In the formula, n is the number of effective material depth data; The material descent rate calculation module first calculates the theoretical height of materials a and b in two adjacent batches: in , These are the weights of material a and material b, respectively. , , where are the bulk densities of material a and material b, respectively; S is the cross-sectional area of ​​the furnace throat; Then calculate the rate of descent of the furnace charge during the feeding of material a: in and These are the measured depths of the feed line before material a and material b are loaded, respectively. and These are the corresponding depth measurement times.

2. The blast furnace charge rate calculation system according to claim 1, characterized in that: The data acquisition module includes a blast furnace charge depth measuring device, a timing device, and a weighing device. The blast furnace charge depth measuring device is used to obtain the height position of various materials at the furnace throat when they are charged into the blast furnace, which is taken as the charge depth, and the timing device obtains the corresponding time data. The weighing device is used to weigh the materials before charging to obtain weight data.

3. A method for calculating blast furnace charge rate, characterized in that: Includes the following steps: Data on the height of various materials at the throat and the corresponding time when they are charged into the blast furnace are obtained. The theoretical volume of the charged materials is calculated based on the bulk density of the materials, and the theoretical height at the throat is calculated based on the cross-sectional area of ​​the throat. The average descent speed of the material is calculated from the theoretical height of the loaded material, the depth of the material line when the material is loaded, and the depth of the material line when the next material is loaded. The effective average value of the material line is calculated based on multiple material line measuring devices at the top of the blast furnace, and the actual material line depth is measured by each material line measuring device. Otherwise, it will not be included in the mean, where s is the set material depth value collected during this fabric application. The specific calculation method for the effective average value of the material line, which serves as the deviation threshold, is as follows: In the formula, n is the number of effective material depth data; First, calculate the theoretical height of materials a and b in two adjacent batches: in , These are the weights of material a and material b, respectively. , , where are the bulk densities of material a and material b, respectively; S is the cross-sectional area of ​​the furnace throat; Then calculate the rate of descent of the furnace charge during the feeding of material a: in and These are the measured depths of the feed line before material a and material b are loaded, respectively. and These are the corresponding depth measurement times.

4. A blast furnace charge rate calculation device, characterized in that: include: The blast furnace feed rate calculation method as described in claim 3 is provided in the memory, the processor, and the computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the blast furnace feed rate calculation method as described in claim 3.

5. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements the data acquisition and storage, as well as the calculation result storage, in the blast furnace material rate calculation method as described in claim 3.

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