A converter gas generation and supply adjustment method and system based on coal gas tank position

By establishing a data acquisition system and predictive models, the output of the press and the steelmaking production time were optimized, solving the problem of full venting of converter gas holders and improving resource utilization and production safety.

CN117165738BActive Publication Date: 2025-10-17BAOSHAN IRON & STEEL CO LTD
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Patent Information

Application Number
CN202210589223.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-05-27
Publication Date
2025-10-17
Estimated Expiration
2042-05-27

AI Technical Summary

Technical Problem

In the process of converter steelmaking, there is a problem of high-calorific-value gas being released due to insufficient consumption by converter gas users and insufficient buffering capacity of gas holders and pipelines. Especially when the CO and O2 concentrations do not meet the standards in the early or late stages of blowing, some gas is burned and released, resulting in resource waste and safety hazards.

Method used

By establishing a data acquisition system, it is possible to predict whether the gas holder will be full within several future smelting cycles. When a full gas holder warning is issued, coupled calculations can be used to determine whether to increase the output of the compressor or postpone the steelmaking production time, thereby optimizing the gas supply regulation and avoiding the release of gas when the holder is full.

Benefits of technology

It enables the prediction and quantification of full-capacity gas release, reducing gas emissions and improving resource utilization and production safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a converter gas generation and supply adjusting method and system based on a coal gas tank position, and comprises the following steps: S1, establishing a data acquisition system to acquire data; S2, establishing characteristic curves of flue gas converter flow data and CO and O2 concentration data changing with blowing time; S3, based on the collected data and the characteristic curves, predicting whether the coal gas tank is full in future several smelting periods; and S4, if a full tank warning is received, coupling calculation is carried out, and the coupling results of the output increase amount and time of the pressurizing machine or the corresponding smelting period delay blowing time of the full tank diffusion or both are output. The application solves the problem of standard heat value coal gas tank full diffusion in the traditional converter coal gas recovery system.
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Description

TECHNICAL FIELD

[0001] The present application relates to the steel industry converter steelmaking process gas scheduling control, more particularly, to a kind of based on gas cabinet position converter gas generation and supply regulation method and system. BACKGROUND

[0002] The flue gas discharged from the converter is captured by the smoke hood, and part of the waste heat is recovered by vaporizing cooling flue and sprayed with water (steam). After dust removal, the flue gas is sent to the gas cabinet after being detected by the flue gas analyzer. The gas that does not meet the standard is burned and dispersed through the dispersion tower. Whether the gas meets the standard mainly considers the CO concentration and O2 concentration. During a blowing period of the converter, the CO concentration and O2 concentration in the converter flue gas change in stages. In the early stage of blowing, the CO concentration gradually increases from 0, and the O2 gradually decreases. In the middle stage of blowing, the CO concentration tends to be flat, and the O2 tends to 0. In the late stage of blowing, the CO concentration gradually decreases to 0, and the O2 concentration gradually increases. Considering safety and economy, there is a part of ultra-low heat value gas dispersion in the early or late stage of converter blowing.

[0003] The instantaneous generation of converter gas is large. Except for the converter flue gas that does not meet the standard of CO and O2 concentration in the early or late stage of blowing being burned and dispersed, due to insufficient consumption of converter gas users, insufficient buffer capacity of gas cabinet and gas pipe network, high heat value gas in the middle stage of blowing is often burned and dispersed through the dispersion tower. SUMMARY

[0004] In view of the above defects in the prior art, the purpose of the present application is to provide a kind of based on gas cabinet position converter gas generation and supply regulation method and system, solve the problem of standard heat value gas cabinet full dispersion in traditional converter gas recovery system.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] On the one hand, a kind of based on gas cabinet position converter gas generation and supply regulation method, comprising the following steps:

[0007] S1, a data acquisition system is established to collect data;

[0008] S2, a characteristic curve of the converter flue gas flow and the CO, O2 concentration changing with the blowing time is established;

[0009] S3, based on the collected data and the characteristic curve, whether the gas cabinet is full in the future several smelting periods is predicted;

[0010] S4, if the full tank warning is received, coupling calculation is carried out, and the output increase amount and time of the booster are output, or the corresponding blowing time of the full tank dispersion is delayed, or the coupling result of the two.

[0011] Preferably, in the step S1, the collected data comprises converter gas data, gas tank site data, pressurizing machine data and production plan data.

[0012] The converter gas data comprises converter gas flow data, CO concentration data, O2 concentration data and time data; and / or

[0013] The gas tank site data comprises gas tank capacity, gas tank site and time data; and / or

[0014] The pressurizing machine data comprises flow data and time data of each pressurizing machine; and / or

[0015] The production plan data comprises production plan of the converter corresponding to the converter gas tank, steel grade data.

[0016] Preferably, in the step S2, when the characteristic curve is established, the starting blowing time is taken as the blowing 0 time point, and the ending blowing is taken as the ending time point.

[0017] When the characteristic curve is established, the starting blowing time is taken as the blowing 0 time point, and the ending blowing is taken as the ending time point.

[0018] Preferably, in the step S3, the characteristic of the full gas tank is:

[0019] Q LDG ≥Q full -Q holder +Q com

[0020]

[0021]

[0022] In the above formula, n is the predicted furnace, Q LDG is the gas amount of the future n furnace reaching the recovery standard, Q full is the maximum capacity of the gas tank, Q holder is the gas tank site at the predicted time point, Q com is the pressurizing machine gas delivery amount of the future n furnace, q i (t) is the characteristic curve of the i furnace converter gas flow with the blowing time change; t i1 , t i2 is the CO concentration value of the standard gas corresponding to the starting and ending recovery time points of the characteristic curve, m is the number of running pressurizing machines, is the j pressurizing machine flow, t p is the time length from the predicted point to the gas stop recovery time point of the future n furnace.

[0023] Preferably, in the step S3, the calculation method of the full tank gas release amount is:

[0024] Q' = Q LDG -Q full +Q holder -Q com

[0025] In the above formula, Q' is the amount of gas released when the tank is full.

[0026] Preferably, in step S3, when the predicted remaining capacity of the gas tank is ≤ 1% to 3% of the maximum capacity of the gas tank, it is considered that the tank is full and an early warning is issued.

[0027] Preferably, in step S3, the future 1 to 5 smelting cycles are predicted.

[0028] The prediction interval time granularity is ≤ 1 blowing cycle.

[0029] One prediction is made before and after each smelting furnace charge.

[0030] Preferably, step S4 further comprises the following steps:

[0031] S41, receiving a gas tank full early warning;

[0032] S42, determining the execution mode according to the tank full gas release amount, the pressurizer data and the tank full occurrence furnace;

[0033] S43, coupling calculation output tank full processing mode;

[0034] S44, the calculation value is output to the execution unit, and the execution unit executes according to the instruction;

[0035] S45, repeating steps S41-S44 to update the instruction;

[0036] When gradually approaching the tank full occurrence furnace, the gas tank full early warning is removed, and step S46 is executed:

[0037] S46, execute according to the original production plan;

[0038] The execution of step S46 is only effective for delaying the start of blowing time of the tank full occurrence furnace;

[0039] During the execution of increasing the pressurizer output, the tank full early warning removal is still executed until the end of the execution time;

[0040] The command to increase the pressurizer output is completed 0-20 minutes before the start of blowing of the tank full release occurrence furnace.

[0041] Preferably, in step S4, the determination of the execution mode is determined according to the following principles:

[0042] The pressurizing machine still has surplus and can realize the full tank release. The full tank release occurs before the start of the blow of the furnace, and the time is 0-20 min. The surplus of the pressurizing machine is increased; and / or

[0043] The pressurizing machine has no surplus, and only the start time of the blow of the furnace is delayed; and / or

[0044] In other cases, the output of the pressurizing machine is increased and the start time of the blow of the furnace is delayed.

[0045] Preferably, when only the output of the pressurizing machine is increased, the amount of the increased output of the pressurizing machine and the time of the increased output are:

[0046]

[0047] t c ≤t j -t p

[0048] In the above formula, q′ c is the amount of the increased output of the pressurizing machine, t c is the time of the increased output of the pressurizing machine, t j is the time point when the blow of the furnace is started due to the full tank, and t p is the predicted time point; and / or

[0049] Preferably, q′ c is the cumulative value of the increased output of the single or multiple pressurizing machines, which needs to be distributed to the single pressurizing machine

[0050] Only the start time of the blow of the furnace is delayed, and the delay time needs to meet:

[0051] and / or

[0052] In the above formula, q c is the total output of the existing running pressurizing machine, and t d is the delay time length of the time point when the blow of the furnace is started due to the full tank;

[0053] The output of the pressurizing machine is increased and the start time of the blow of the furnace is delayed, and the amount of the increased output of the pressurizing machine and the delay time need to meet:

[0054]

[0055]

[0056] t c ≤t j -t p

[0057] In the above formula, q″ c is the amount of the increased output of the pressurizing machine, t is the maximum output of the pressurizing machine d t is the length of time delay when the furnace blow refining occurs due to the full tank c t is the length of time between the starting time point and the predicted time point when the furnace blow refining occurs due to the full tank j t is the starting time point when the furnace blow refining occurs due to the full tank p t is the predicted time point.

[0058] On the other hand, a converter gas generation and supply adjustment system based on the tank position of the converter gas tank comprises:

[0059] A data acquisition system is used to acquire the converter gas data, the tank position data of the converter gas tank, the data of the pressurizing machine and the production plan data;

[0060] A gas amount prediction unit is used to establish the characteristic curve of the converter gas flow and the change of CO / O2 in the converter gas with the blow refining time through the acquired converter gas data;

[0061] A tank position prediction unit is used to predict the gas amount in a period of time based on the tank position data of the converter gas tank, the data of the pressurizing machine and the production plan data in combination with the characteristic curve, and when the qualified gas amount is greater than the output of the pressurizing machine and the remaining capacity of the tank position, a full tank warning is issued;

[0062] A production optimization unit is used to perform coupling calculation based on the data acquisition system, the gas amount prediction unit and the tank position prediction unit, to determine the increase of the output of the pressurizing machine or the delay time of the steelmaking production or the coupling scheme of both, so as to eliminate the full tank diffusion.

[0063] The converter gas generation and supply adjustment system based on the tank position of the converter gas tank is used to perform the converter gas generation and supply adjustment method based on the tank position of the converter gas tank.

[0064] The converter gas generation and supply adjustment method and system based on the tank position of the converter gas tank have the following beneficial effects:

[0065] 1) The converter gas generation and supply adjustment method and system based on the tank position of the converter gas tank can predict the furnace refining information and the diffusion amount data when the full tank diffusion occurs;

[0066] 2) The converter gas generation and supply adjustment method and system based on the tank position of the converter gas tank can increase the output of the pressurizing machine or optimize the production schedule to reduce the gas diffusion caused by the full tank rejection. BRIEF DESCRIPTION OF DRAWINGS

[0067] Figure 1 is a specific execution path schematic diagram of the converter gas generation and supply adjustment method embodiment of the present application;

[0068] Figure 2 is a characteristic curve of the CO and O2 concentrations in the flue gas of a certain converter obtained in step S2 of the converter gas generation and supply adjustment method of the present application;

[0069] Figure 3 is Figure 2 the flow curve of the converter flue gas of a certain converter in a certain furnace campaign.

[0070] Figure 4 is a frame diagram of the converter gas generation and supply regulation system of the present application. DETAILED DESCRIPTION

[0071] In order to better understand the above technical solutions of the present application, the technical solutions of the present application are further described below in combination with the drawings and examples.

[0072] In combination with Figure 1 the drawings, the present application provides a converter gas generation and supply regulation method based on the gas tank position, which comprises the following steps:

[0073] S1, establishing a data acquisition system to acquire data;

[0074] S2, establishing characteristic curves of the converter flue gas flow and the CO and O2 concentrations changing with the blowing time;

[0075] S3, based on the acquired data and the characteristic curves, predicting whether the gas tank is full in the future several smelting periods;

[0076] S4, if the tank full warning is received, performing coupling calculation to output the output increase amount and time of the pressurizing machine or the coupling result of the tank full diffusion corresponding to the delayed blowing time of the furnace campaign or both.

[0077] In step S1, the acquired data includes converter gas data, gas tank position data, pressurizing machine data and production plan data.

[0078] In step S1, each item of data is pulled from the existing system, and the contained data is shown in Table 1 as follows:

[0079] Table 1

[0080] Gas data <![CDATA[历史炉次的煤气流量、CO浓度、O2浓度随时间变化的数据等;]]> Tank position data Gas tank number, gas tank capacity upper and lower limits, current gas tank position value, etc. Pressurizer data Pressurizer number, pressurizer flow rate, etc. Production plan data Production plan, steel grade, converter information, etc.

[0081] In step S2, the characteristic curves are updated once a week, and are obtained by piecewise fitting after averaging the latest 100 furnace campaigns of each converter.

[0082] In step S2, the 0 time point is taken as the starting point of each blowing when the CO concentration changes sharply, and the end time point is taken as the time when the CO concentration approaches 0.

[0083] As Figure 2 is the characteristic curve of the CO and O2 concentrations in the flue gas of a certain converter of a certain steel plant obtained according to step S2.

[0084] As Figure 3is the flow curve of a certain converter gas in a certain steel plant, because the gas flow tends to be constant, the model takes a constant value for calculation.

[0085] In step S3, the future 1-5 furnace production plan data, the current gas tank value and the total flow data of the pressurizing machine and the characteristic curve are combined to calculate whether the tank is full in the future 1-5 furnace smelting period. The calculation model is:

[0086] Q LDG ≥Q full -Q holder +Q com

[0087]

[0088]

[0089] In the above formula, n is the predicted furnace, Q LDG is the gas amount of the future n furnace reaching the recovery standard, Q full is the maximum capacity of the gas tank, Q holder is the gas tank value at the prediction time point, Q com is the future n furnace pressurizing machine gas delivery amount, q i (t) is the characteristic curve of the converter gas flow changing with blowing time of i furnace, which is a constant value in this embodiment; t i1 , t i2 is the start and end recovery time point corresponding to the characteristic curve of the standard gas CO concentration value, m is the number of running pressurizing machines, is the j pressurizing machine flow, t p is the time length from the prediction point to the future n furnace gas stop recovery time point.

[0090] In step S3, the calculation method of the tank full gas release amount is:

[0091] Q'=Q LDG -Q full +Q holder -Q com

[0092] In the above formula, Q' is the tank full gas release amount.

[0093] The return value in step S3 is the furnace corresponding to the occurrence of tank full.

[0094] In step S3, only the future 1-5 smelting periods are predicted; preferably, the gas prediction unit prediction interval time granularity is ≤1 blowing period; the gas prediction unit is predicted before and after charging of each smelting furnace.

[0095] In step S4, the gas recovery optimization unit is specifically:

[0096] S41, receiving a gas tank full pre-warning;

[0097] S42, determining the execution mode according to the tank full gas emission amount, the pressurizing machine data and the tank full occurrence furnace period (only increasing the pressurizing machine output, only delaying the tank full occurrence furnace period start blowing time, simultaneously increasing the pressurizing machine output and delaying the tank full occurrence furnace period start blowing time);

[0098] S43, coupling calculation output tank full processing mode;

[0099] S44, the calculation value is output to the execution unit, and the execution unit executes according to the instruction;

[0100] S45, repeatedly executing S41-S44, updating the instruction.

[0101] When gradually approaching the tank full occurrence furnace period, the gas tank full pre-warning is released, and S46 operation is executed:

[0102] S46, executing according to the original production plan.

[0103] The execution of step S46 is only effective for the operation of delaying the tank full occurrence furnace period start blowing time.

[0104] During the execution of increasing the pressurizing machine output, the tank full pre-warning release is still executed until the execution time ends.

[0105] The increase of pressurizing force output command is completed 0-20 min before the tank full emission occurrence furnace period blowing starts.

[0106] In step S4, the determination of the execution mode is determined according to the following principles:

[0107] The pressurizing machine still has surplus and can realize that the tank full emission is eliminated before the tank full emission occurrence furnace period blowing starts 0-20 min, only increasing the pressurizing machine output;

[0108] The pressurizing machine has no surplus, only delaying the tank full occurrence furnace period start blowing time;

[0109] In other cases, simultaneously increase the pressurizing machine output and delay the tank full occurrence furnace period start blowing time.

[0110] When only increasing the pressurizing machine output, the pressurizing machine output increase amount is:

[0111]

[0112] t c ≤t j -t p

[0113] In the above formula, q′ c is the pressurizing machine output increase amount, t cTo increase the pressurizing machine output time, t j To delay the time point of the start of the blowing of the furnace batch when the tank is full, t p is the predicted time point; and / or

[0114] Preferably, q′ c is the output increment value of the single or multiple pressurizing machines, which is distributed to the single pressurizing machine in implementation

[0115] Only the start blowing time of the furnace batch when the tank is full is delayed, and the delay time needs to satisfy:

[0116] and / or

[0117] In the above formula, q c is the total output of the existing running pressurizing machine, t d is the delay time length of the blowing time point of the furnace batch when the tank is full;

[0118] The pressurizing machine output is increased and the start blowing time of the furnace batch when the tank is full is delayed, and the increased output and the delay time need to satisfy:

[0119]

[0120]

[0121] t c ≤t j -t p

[0122] In the above formula, q″ c is the increased output of the pressurizing machine, is the maximum output of the pressurizing machine, t d is the delay time length of the blowing time point of the furnace batch when the tank is full, t c is the time length of the blowing start time point of the furnace batch when the tank is full and the predicted time point, t j is the blowing start time point of the furnace batch when the tank is full, t p is the predicted time point.

[0123] The increased output time of the pressurizing machine and the delayed time of the start blowing of the furnace batch when the tank is full consider a certain surplus.

[0124] When the tank is full which is not predicted by the coal gas recovery control system, it is directly released; when the tank position approaches the lower limit value, the above execution command is exited, and the tank position protection operation is performed.

[0125] Reference is also made to Figure 1, is the specific implementation path of the embodiment. First, the tank position prediction unit performs gas tank position prediction. If no tank full situation occurs in the future, the default program is executed, and the predetermined situation or the current situation is continued to be executed. If a tank full situation occurs, the production optimization unit performs coupling calculation. First, the execution mode is calculated, the execution parameters are output after the execution mode is confirmed, and the information is sent to the execution unit for execution. During the execution process, the tank position data is continuously monitored. If a sudden tank full (or a critical value is reached) occurs, the recovery is stopped, and the excess gas is released. If it does not occur, regardless of whether it is until the execution command ends.

[0126] In combination with Figure 4 As shown in the drawings, the present application also provides a converter gas generation and supply adjustment system based on the capacity of the gas tank to execute the converter gas generation and supply adjustment method based on the capacity of the gas tank, which comprises a data acquisition system, a gas quantity prediction unit, a tank position prediction unit, and a production optimization unit. By predicting the occurrence of the tank full furnace and the time point in advance, and re-optimizing the steelmaking production plan or increasing the output of the booster to free up the gas tank capacity, the problem of standard heat value gas tank full release in the traditional converter gas recovery system is solved. The specific implementation is as follows:

[0127] The data acquisition system is used to acquire converter gas (converter flue gas) data, gas tank data, booster data, and production plan data. The gas data includes converter gas flow data, CO concentration data, O2 concentration data, and time data; the tank position data includes gas tank capacity, gas tank position, and time data; the booster data includes the flow data of each booster and the time data; and the production plan data includes the production plan of the converter corresponding to the converter gas tank, steel grade data, etc.

[0128] The gas quantity prediction unit is established by the converter gas data collected to establish the characteristic curve of the converter gas flow, the CO / O2 in the converter gas, and the blowing time. The characteristic curve is established by segment fitting based on the average of the last 100-200 furnace data; the characteristic curve can be established for each converter; the characteristic curve can be established for each converter and each steel grade; and the characteristic curve has a self-updating iteration function and a manual correction function.

[0129] The tank position prediction unit is based on the gas tank position data, the booster data, and the production plan data in combination with the characteristic curve to predict the gas quantity within a period of time. When the standard gas quantity is greater than the output quantity of the booster and the remaining capacity of the gas tank, a tank full warning is issued.

[0130] The tank position prediction unit can also calculate the tank full gas release quantity.

[0131] The production optimization unit is a coupling calculation based on the data acquisition system data, the tank position prediction unit, and the gas quantity prediction unit to determine the increase in the output of the booster or the delay time of the steelmaking production or the coupling scheme of both to realize the elimination of the tank full release.

[0132] Those skilled in the art will recognize that the above-described embodiments are merely illustrative of the application and should not be considered limiting. Variations and modifications of the embodiments disclosed herein can be made based on the description set forth herein, without departing from the scope and spirit of the application.

Claims

1. A method for generating and supplying converter gas based on a gas cabinet, characterized in that: The following steps are involved: S1. Establish a data acquisition system to collect data. In step S1, the collected data include converter gas data, gas tank location data, pressurizer data and production plan data. The converter gas data includes converter gas flow data, CO concentration data, O2 concentration data and time data; The gas tank position data includes gas tank capacity, gas tank position and time data; The compressor data includes flow data and time data of each compressor; The production plan data includes the production plan and steel grade data of the converter corresponding to the converter gas holder; S2. Establish the characteristic curve of converter flue gas flow rate and CO and O2 concentration changes with blowing time. In step S2, when the characteristic curve is established, the time when blowing starts is taken as blowing time point 0, and the time when blowing ends is taken as the end time point; When establishing the characteristic curve, the time point when the CO concentration begins to change sharply after the start of blowing is taken as the zero time point, and the time point when the CO concentration approaches 0 is taken as the end time point; S3. Based on the collected data and characteristic curves, predict whether the gas tank will be full in the next few smelting cycles. In step S3, the characteristics for determining whether the gas tank is full are: Q LDG ≥Q full -Q holder +Q com In the above formula, n is the predicted heat, Q LDG Q is the amount of gas that reaches the recovery standard for the next n furnaces. full is the maximum capacity of the gas tank, Q holder To predict the gas tank level at a certain time point, Q com The amount of gas delivered to the future n-batch pressurizer, q i (t) is the characteristic curve of converter gas flow rate changing with blowing time for heat i; t i1 , t i2 is the CO concentration value of the standard gas corresponding to the start and end recovery time points of the characteristic curve, m is the number of operating compressors, is the flow rate of the compressor, t p The time from the prediction point to the point where the gas recovery of the nth furnace is stopped in the future; S4. If a cabinet full warning is received, a coupling calculation is performed to output the increase in press output and time, or the delayed blowing time of the corresponding furnace due to cabinet full release, or the coupling result of the two.

2. The method for generating and supplying converter gas based on a gas cabinet according to claim 1, characterized in that: In step S3, the method for calculating the amount of gas released when the cabinet is full is: Q'=Q LDG -Q full +Q holder -Q com In the above formula, Q' is the amount of gas released when the cabinet is full.

3. The method for generating and regulating converter gas based on a gas tank according to claim 2, characterized in that: In step S3, when the predicted remaining capacity of the gas tank is ≤ 1% to 3% of the maximum capacity of the gas tank, the tank is considered full and a full tank warning is issued.

4. The method for generating and regulating converter gas based on a gas cabinet according to claim 1, characterized in that: In step S3, predicting the next 1 to 5 smelting cycles; The prediction interval time particle size is ≤ 1 blowing cycle; A prediction is made before and after charging each smelting heat.

5. The method for generating and supplying converter gas based on a gas cabinet according to claim 3, characterized in that: The step S4 further comprises the following steps: S41, receiving a gas tank full warning; S42. Determine the execution mode based on the amount of gas released when the cabinet is full, the compressor data, and the number of times the cabinet is full; S43, coupling calculation output cabinet full processing method; S44, the calculated value is output to the execution unit, and the execution unit executes according to the instruction; S45, repeat steps S41 to S44, update the instruction, When the gas tank is approaching full, the gas tank full warning is lifted and step S46 is executed: S46. Execute according to the original production plan; The execution of step S46 is only effective for delaying the start of blowing operation when the cabinet is full; During the period of increasing the compressor output, the cabinet full warning will continue to be lifted until the execution time ends; The command to increase the pressure output is completed 0 to 20 minutes before the start of the furnace blowing when the cabinet is fully discharged.

6. The method for generating and supplying converter gas based on a gas cabinet according to claim 5, characterized in that: In step S4, the execution mode is determined according to the following principles: The compressor still has spare capacity and can achieve cabinet full release. The cabinet full release is eliminated 0 to 20 minutes before the start of the furnace blowing, and only the compressor output is increased; and / or The compressor has no spare capacity, which only delays the start of blowing when the tank is full; and / or In other cases, increase the compressor output and delay the start of blowing when the cabinet is full.

7. The method for generating and regulating converter gas based on a gas tank according to claim 5, characterized in that: When only the compressor output is increased, the compressor output increases by: t c ≤t j -t p In the above formula, q' c Increase the output of the press, t c To increase the compressor output time, t j t is the time when blowing starts when the cabinet is full and rejected. p is the prediction time point, q' c The incremental cumulative value of the output of a single or multiple compressors, which must be allocated to a single compressor during implementation; and / or Only the blowing start time of the furnace with full tank is postponed. The postponement time must meet the following requirements: In the above formula, q c The total output power of the existing operating compressor, t d The length of time for delaying the blowing time of the furnace when the tank is full; and / or At the same time, increase the output of the compressor and postpone the start of blowing when the cabinet is full. The increase in compressor output and the postponement time must meet the following requirements: t c ≤t j -t p In the above formula, q” c Increase the output of the compressor. is the maximum output of the compressor, t d The delay time length of the furnace blowing when the cabinet is full, t c The time interval between the start time of blowing and the predicted time of the furnace where the cabinet is full and rejected is t j t is the time when blowing starts when the cabinet is full and rejected. p The prediction time point.

8. A converter gas generation and supply regulation system based on a gas cabinet, characterized in that: include: Data acquisition system, used to collect converter gas data, gas tank position data, compressor data and production plan data; The gas volume prediction unit uses the collected converter gas data to establish the converter gas flow rate and the characteristic curve of CO / O2 in the converter gas changing with blowing time; The gas tank capacity prediction unit uses gas tank capacity data, compressor data, and production plan data combined with characteristic curves to predict gas volume over a period of time. When the qualified gas volume exceeds the compressor output and the remaining capacity of the gas tank, a full tank warning is issued. The production optimization unit performs coupled calculations based on the data acquisition system, the gas volume prediction unit, and the cabinet position prediction unit to determine the increase in compressor output or the delay time for steelmaking production, or a coupled solution of the two, thereby eliminating cabinet fullness and release. The gas tank-based converter gas generation and supply regulation system is used to execute the gas tank-based converter gas generation and supply regulation method according to any one of claims 1 to 7.

Citation Information

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