CN103361454A - Data-filtering-based method for judging blast furnace hanging - Google Patents
Data-filtering-based method for judging blast furnace hanging Download PDFInfo
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Abstract
The invention discloses a data-filtering-based method for judging the blast furnace hanging, which comprises the following steps of: carrying out filtering data in the actual operation of a blast furnace by using a grading processing method; according to the blast furnace technology, establishing a primary rule base module for monitoring changes and fluctuations of single parameters of the blast furnace; establishing a secondary rule base module for monitoring joint changes and fluctuations of multiple parameters of the blast furnace; according to data monitoring and evaluation results, timely warning or correcting the abnormal conditions of the blast furnace; flexibly adjusting a primary rule base and a second rule base as required. The data of the primary rule base include a gauge rod, the descent speed of the gauge rod, the ratio of a hot air pressure to an air volume after normalization calculation, permeability indexes, the ratio of an average edge temperature value of cross-shaped four temperature measuring points to the top temperature of the furnace, the ratio of the average edge temperature value of the cross-shaped four temperature measuring points to the throat temperature of the furnace and furnace heat indexes; the data of the secondary rule base include alarm data outputted by the primary rule base. According to the method disclosed by the invention, the problems that traditional rule bases are inconvenient to modify, difficult to maintain, complicated in structure, fuzzy in conclusion and the like are solved, and the conditions of the blast furnace hanging are subjected to targeted monitoring, thereby providing the basis for the production operation of the blast furnace and achieving the aims of reducing the fluctuation of furnace conditions, guaranteeing the stability and the smoothness of the furnace conditions, improving the production efficiency of the blast furnace and reducing the energy consumption.
Description
Technical field
The present invention relates to blast furnace ironmaking monitoring field, the blast furnace hanging determination methods that especially a kind of based on data filters.
Background technology
Blast furnace ironmaking is collection physics, a chemical reaction and follows the high temperature that the solid-liquid-gas three phase of heat transfer, mass transfer changes mutually, continuous, complicated commercial run, therefore, the various parameters of high furnace interior and the feature of using the traditional detection means to obtain are all that isolate, single, the working order that can not fully truly reflect blast furnace reality, also just can't effectively instruct operations such as the cloth operation of blast furnace, pushing wind manipulation, breeze blowings.The blast furnace hanging refers in blast furnace production process and occurs extremely because Gas Flow moves, causes furnace charge air permeability to descend and cause furnace charge to stop a kind of severely subnormal working of a furnace of occur that descends.In the blast furnace actual mechanical process, determination methods is mainly that the material footage occurs stagnating according to 1 minutes and rising suddenly appears in hot-blast pressure at present.The harm of blast furnace hanging is very large, if can not early discovery, be easy to cause more serious furnace condition disorder.Therefore if judge that according to some observable data of blast furnace the hanging sign of blast furnace will contribute to the stable smooth operation of blast furnace in advance.Generally, Computer System for Some Blast Furnace directly gathers measuring instrument data in the blast furnace foundation automatization, then carries out the processing such as normalizing, noise reduction, then delivers in the Computer Database of blast furnace.Blast Furnace Expert System or intelligent control system, judge the blast furnace working order indirectly according to the parameter of monitoring, utilizes expert knowledge library and inference engine to estimate conditions of blast furnace, and the result of evaluation uses the interface display such as Eight-Diagram, histogram to the blast furnace operating person usually.The blast furnace operating person, according to the condition of production of prediction of result next stage of estimating, adjusts blast furnace production operation strategy.
[patent No. 95118361.3 blast furnace comprhensive deterministic systems] relate to a kind of system of according to blast furnace detection data, carrying out the judgement of blast furnace index, based on case library and conventional knowledge base, are analyzed relatively judgement.
[patent No. 200710012215.5 blast furnace production process control information intelligence systems] are to utilize Design of Inference Engine to make evaluation to the blast furnace working condition, utilize database technology design event table, in table, rule derives from parameter and proposes eigenwert, use case flip-flop toggle inference engine.
Above two patents all are based on expert knowledge library, due to blast furnace complicacy, polytropy at present, are difficult to set up unalterable general expert knowledge library, even have, also are difficult to adapt to other blast furnaces.Expertise is to be based upon blast furnace Data Detection point less, under the prerequisite that data are unreliable and mechanism is unclear, be unsuitable for the modern blast furnace check point many, the reliable present situation of data.This is exactly the undesirable reason of sorts of systems result of use of introduction and domestic-developed in fact.
[patent No. CN1403593 method of utilizing intelligent control system to control blast-furnace smelting] utilizes intelligent control system to control blast furnace process, build local area network at iron work, realize iron manufacturing process real time information sampling and automatic transmitting function, utilize the intelligent control software module, follow the tracks of the operation of blast furnace data variation, then export diagnostic result.The method relates generally to technology such as controlling model and control strategy, and the effective filtration and the usage data filter method that do not relate to the blast furnace data judge the blast furnace hanging.
Summary of the invention
The blast furnace hanging determination methods that the object of the present invention is to provide a kind of based on data to filter, adopt hierarchical processing method, data in the blast furnace actual motion are implemented to filter, effective monitoring blast furnace data variation and fluctuation, the judgement blast furnace occurs that the hanging possibility provides foundation.
Another object of the present invention is to safeguard that by rule solving in the past rule base revises the problems such as inconvenience (needing the expert to participate in revising), difficult in maintenance, complex structure, conclusion is fuzzy.And then reached the fluctuation of the minimizing working of a furnace, and guarantee working of a furnace stable smooth operation, improve blast furnace production efficiency, reduce the purpose of energy consumption.
A further object of the present invention is in conjunction with the characteristics of blast furnace production technique, first-order rule library module, secondary rule base module parameter to be set, only overcome and stagnate judgement blast furnace hanging with the material chi, and rise suddenly with hot-blast pressure, and lack the existing defect of associated real data judgement blast furnace " hanging ".
The objective of the invention is by following process implementation, the blast furnace hanging determination methods that a kind of based on data filters, is characterized in that comprising and set up digital sampling and processing, first-order rule library module, secondary rule base module, output module and regular maintenance module as a result.The data in first-order rule storehouse are and material chi and material chi lowering speed correlation parameter and correlation parameter thresholding, comprise that hot-blast pressure, air quantity, hot-blast pressure and air quantity ratio, permeability index, throat temperature, furnace throat temperature, cross temperature four point edge temperature, cross temperature four point edge temperature-averaging values and throat temperature ratio, cross temperature four point edge temperature-averaging values and furnace throat temperature ratio, molten iron [Si] content, stove heat number, the ore deposit after normalization method is calculated criticize heavy and coke (per) charge anharmonic ratio value, the interior coke quantity of adding of smelting cycle; Each parameter that secondary rule base data are the output of first-order rule storehouse surpasses the thresholding alert data.By the first-order rule library module, the data in the blast furnace actual motion of data collecting module collected are implemented to filter the monitoring one-parameter variation of blast furnace and fluctuation.By common variation and the fluctuation of secondary rule base module monitors blast furnace multiparameter.When the one-parameter data do not meet the alarm limit of first-order rule regulation, its data are filtered out by the first-order rule storehouse automatically, when the one-parameter data meet the alarm limit of first-order rule regulation, according to first-order rule, through output module trigger alarm or direct intervention blast furnace operating as a result, the data that simultaneously will meet first-order rule alarm limit trigger alarm are sent into the secondary rule base and are processed.When the multiparameter data of sending into the secondary rule base not during the alarm limit of meeting tier 2 rule predetermining, its data are filtered out by the secondary rule base automatically, when the alarm limit of the multiparameter data meeting tier 2 rule predetermining of sending into the secondary rule base, according to the secondary rule through output module trigger alarm as a result.
1. digital sampling and processing
Raw data is provided by on-the-spot two-level computer system server, is the sequence data of one group of fixed cycle.The sampling interval provided according to the first-order rule storehouse is stored by minimum sampling interval field data.In order not miss maximum value and the minimum value in sampling interval, every some data record average (as master data), maximum value and minimum value simultaneously.Can use one of them or be used in combination according to processing requirement, raw data stores in database standby.
2. first-order rule library module
Set up the first-order rule storehouse according to the requirement of technique needs or secondary rule base.As according to the technique needs, record certain one-parameter sampling interval, the retardation time with respect to current molten iron, high alarm setting 1, high alarm setting 2, low alarm limit 2, low alarm limit 1 etc.Regular record is kept at database backup, can by furnace superintendent, be safeguarded according to the blast furnace operating mode.Secondary rule base input parameter is the Output rusults in first-order rule storehouse for another example, just need to set up the first-order rule storehouse according to the requirement of secondary rule base.Adopt first-order rule module monitors one-parameter data, when the one-parameter data meet the alarm limit alarm that first-order rule is stipulated.The blast furnace operating personnel can, by adjusting one-parameter correction conditions of blast furnace, also can carry out closed-loop control to one-parameter, the direct intervention blast furnace operating.
3. secondary rule base module
On the basis of first-order rule, according to the technique between certain several one-parameter, secondary rule base (operational stage rule base) is set up in contact.When certain several one-parameter data meets alert if separately, they have met again secondary rule base defined terms simultaneously, can be according to secondary rule base trigger alarm or blast furnace operating.If only there are several one-parameters to meet alert if separately, when the meeting tier 2 rule base is irregular, screen-picture and audible alarm also are failure to actuate, but go to the first-order rule storehouse, carry out respective handling.
4. output module as a result
According to the result of determination to different pieces of information and feature, classification sends on the screen of terminal of operation department or master control room.While only needing to remind the blast furnace operating personnel as result of determination, only need be according to the judgement situation, alarming result is shown to computer screen with the form of picture.When as very urgent as result of determination, can be according to practical situation, alarming result is being shown to computer screen simultaneously with the form of picture, the blast furnace operating of taking measures rapidly to intervene, avoid blast furnace fluctuation or abnormal.
5. regular maintenance module
At first first-order rule and secondary rule set up basic rule base by the iron-smelting process expert according to production technology principle.In use, furnace superintendent can according to State of Blast Furnace labour and raw material condition be modified and the parameter increase and decrease.
The method of the present invention to blast furnace the data stage treatment, data in the blast furnace actual motion are implemented to filter, extract the delta data that steady direct motion impacts to blast furnace, according to the blast furnace technology situation, formulate the first-order rule library module, the monitoring one-parameter variation of blast furnace and fluctuation.Formulate secondary rule base module, variation and the fluctuation of monitoring blast furnace multiparameter, according to the monitoring evaluation result to data, the unusual condition of early warning in time or correction blast furnace.Furnace superintendent can be adjusted first-order rule storehouse and secondary rule base as required flexibly, has solved in the past rule base and has revised the problems such as inconvenience (needing the expert to participate in revising), difficult in maintenance, complex structure, conclusion is fuzzy.Also reached the fluctuation of the minimizing working of a furnace and energy consumption, improved blast furnace production efficiency, guaranteed the purpose of working of a furnace stable smooth operation simultaneously.
The present invention makes the materials footage comprehensively judge the blast furnace generation hanging fact and the trend that the generation hanging is arranged according to the parameter such as, material chi lowering speed, hot-blast pressure and ratio data, stove heat number, permeability index, cross temperature four point edge temperature-averaging values and throat temperature ratio, cross temperature four point edge temperature-averaging values and the furnace throat temperature ratio of air quantity after normalization method is calculated or index.Can implement filter the data in the blast furnace actual motion, facilitate the alteration ruler storehouse, effective monitoring blast furnace data variation and fluctuation, particularly monitor the situation of blast furnace hanging, for the blast furnace production operation provides foundation.Thereby reached the fluctuation of the minimizing working of a furnace and energy consumption, improved blast furnace production efficiency, guaranteed the purpose of working of a furnace stable smooth operation.
The accompanying drawing explanation
Accompanying drawing 1 blast furnace data monitoring module diagram;
Accompanying drawing 2 first-order rule data declaration schematic diagram;
Accompanying drawing 3 one-levels and secondary rule relation schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, the invention provides the blast furnace hanging determination methods that a kind of based on data filters, the system of employing comprises sets up digital sampling and processing, first-order rule library module, secondary rule base module, output module and regular maintenance module as a result.
1. digital sampling and processing
Raw data is provided by on-the-spot second computer, is the data sequence of one group of fixed cycle.The sampling interval provided according to the first-order rule storehouse is stored by minimum sampling interval field data.In order not miss maximum value and the minimum value in sampling interval, filter out smooth operation of furnace is not had to influential data, in data cell, every some data only retain average (as master data), maximum value and minimum value, according to processing requirement, can use one of them or be used in combination.Raw data stores in database standby, and take and expect chi lowering speed and material chi data instance: the sampling interval provided according to the first-order rule storehouse is 5 seconds, records the material chi lowering speed of every 5 seconds and expects that footage is according to standby as some data.
2. first-order rule library module
Set up the first-order rule storehouse according to the requirement of technique needs or secondary rule base.As according to the technique needs, record retardation time that certain one-parameter sampling interval, parameter exert an influence with respect to current molten iron [Si] content, parameter high alarm setting 1, parameter high alarm setting 2, parameter low alarm limit 2, parameter low alarm limit 1 etc.Regular record is kept at database backup, can by furnace superintendent, be safeguarded according to the blast furnace operating mode.Secondary rule base input parameter is the Output rusults in first-order rule storehouse for another example, just need to set up the first-order rule storehouse according to the requirement of secondary rule base.
The physics with respect to other data points action time lags behind to the time point of blast furnace effect to refer to a certain data retardation time.For example: the impact with respect to air quantity on [Si] content in current molten iron, current material loading data are on the about smelting cycle (7～8 hours) that lags behind of the impact of [Si] content in current molten iron, i.e. time of 4 sampling interval, according to sometime the section combustion intensity, smelting cycle is relatively-stationary (referring to Fig. 2).
Hot-blast pressure and air quantity to blast furnace action time in 10 minutes, hot-blast pressure and air quantity are the sync direction variation under normal circumstances, if occur that within continuous two sampling periods hot-blast pressure is the increase mode and changes, and air quantity is on a declining curve, think and possess the hanging of appearance probability, but because hot-blast pressure and air quantity are not same quantitative series certificates, must calculate through normalization method, (i) hot-blast pressure is become with the air quantity normalizing, 1] data between, then calculate hot-blast pressure and air quantity ratio, calculating hot-blast pressure and air quantity ratio as single parameter, calculated continuously each sampling period hot-blast pressure and air quantity ratio in 1 minute, get its moving average, setup parameter high alarm setting 1, parameter high alarm setting 2, regular record is kept at database backup, can safeguard alarming value by furnace superintendent according to the blast furnace operating mode.If continuous 2 cycles meet alert if, in parameter input secondary rule base.
Permeability index to blast furnace action time in 1 minute, if occur within continuous two sampling periods, descend, think and possess the hanging of appearance probability, setup parameter low alarm limit 2, parameter low alarm limit 1 etc., regular record is kept at database backup, can safeguard alarming value by furnace superintendent according to the blast furnace operating mode.If continuous 2 cycles meet alert if, in parameter input secondary rule base.
Throat temperature, furnace throat temperature, cross temperature four point edge temperature to blast furnace action time in 1 minute, three parameters are all the time sync direction and change, but rate of change is variant, wherein the soonest, secondly cross temperature four point edge temperature variation are furnace throat temperature, next is throat temperature again.If three parameters ascendant trend all occurs in continuous two sampling periods, calculated continuously cross temperature four point edge temperature-averaging values and throat temperature ratio and cross temperature four point edge temperature-averaging values and furnace throat temperature ratio in 1 minute, get its moving average, when cross temperature four point edge temperature-averaging values and throat temperature ratio are greater than 0.8, cross temperature four point edge temperature-averaging values and furnace throat temperature ratio are greater than 1.5 and think to possess the hanging of appearance probability simultaneously, the concrete high alarm setting 1 of setup parameter, parameter high alarm setting 2 etc., regular record is kept at database backup, can safeguard alarming value by furnace superintendent according to the blast furnace operating mode.If continuous 2 cycles meet alert if, in parameter input secondary rule base.
The stove heat number is by the local heat balance calculation result data, within every 1 hour, calculate 1 time, if this index is less than 0.75, think and possess the hanging of appearance probability, the concrete low alarm limit 2 of setup parameter, parameter low alarm limit 1 etc., regular record is kept at database backup, can safeguard alarming value by furnace superintendent according to the blast furnace operating mode.If continuous 2 cycles meet alert if, in parameter input secondary rule base.
Heavy and coke (per) charge tuple are criticized according to being a smelting cycle (7～8 hours) to blast furnace action time in ore deposit, there is no fixed sample period, data gathering is as triggering according to actual cloth " switch " signal, normal cloth is sequentially that then 1 batch of ore is 1 coke charge charcoal, if there is 2 coke charge charcoals, the 2nd coke charge charcoal is regarded as additional coke.Additional coke quantity is done cumulative calculation by early stage (0～2.8 hour), mid-term (2.9～5.6 hours) and later stage (5.7～8.0 hours), if the interior ore deposit of normal cloth order is criticized and heavyly with coke (per) charge anharmonic ratio value, is less than 4.5, and additional coke is arranged, think and possess the hanging of appearance probability.Do the concrete high alarm setting 1 of setup parameter, parameter high alarm setting 2, parameter high alarm setting 3, parameter low alarm limit 3, parameter low alarm limit 2, parameter low alarm limit 1 etc. by early stage, mid-term and later stage and additional coke quantity, regular record is kept at database backup, can safeguard alarming value by furnace superintendent according to the blast furnace operating mode.If there is alarming value, in parameter input secondary rule base.
Adopt first-order rule module monitors one-parameter data, the one-parameter data are implemented to filter, when the one-parameter data do not meet the alarm limit of first-order rule regulation, its data are filtered out by the first-order rule storehouse automatically, be not fed in the secondary rule base, when the one-parameter data meet the alarm limit of first-order rule regulation, can report to the police or send into the secondary rule base and be processed.
With material chi data instance, sampling interval (5 seconds), retardation time (0 second), high alarm setting I (0.5m), high alarm setting II (0.3m), low alarm limit II (0m), low alarm limit I (0m).The material chi lowering speed of take is example, sampling interval (5 seconds), retardation time (0 second), high alarm setting I (0.004m/s), high alarm setting II (0.002m/s), low alarm limit II (0m/s), low alarm limit I (0m/s).Adopt the rule in the first-order rule storehouse to monitor the one-parameter data, the alarm limit exceeded is separately reported to the police.The blast furnace operating personnel can carry out closed loop management by adjusting the one-parameter data, and the direct intervention blast furnace operating, revise conditions of blast furnace.In this example, can formulate first-order rule as follows: when material footage certificate meets one of following condition: higher than 0.3m or higher than 0.5m, output module produces screen-picture and the warning of sounding as a result; When material chi lowering speed meets one of following condition: lower than 0.004m/s or lower than 0.002m/s, output module produces screen-picture and the warning of sounding as a result, then the alert data value is transported to secondary rule base module.The actual value of supposing the material chi is that the actual value of 0.25m or material chi lowering speed is 0.01m/s, and its data, in rational scope, can not meet the first-order rule storehouse, so these data are filtered out by the first-order rule storehouse, it is not processed.
Hot-blast pressure and the air quantity ratio data after normalization method is calculated of take is example, and when ratio data surpasses 1.1 or 1.2, output module produces screen-picture and the warning of sounding as a result, then the alert data value is transported to secondary rule base module.The assumed calculation value is 1.0, and its data, in rational scope, can not meet the first-order rule storehouse, so these data are filtered out by the first-order rule storehouse, it is not processed.
Take the stove heat number as example, and when exponent data, lower than 0.75 or lower than 0.65, output module produces screen-picture and the warning of sounding as a result, then the alert data value is transported to secondary rule base module.If exponent data is 0.76, its data, in rational scope, can not meet the first-order rule storehouse, so these data are filtered out by the first-order rule storehouse, it are not processed.
Take permeability index as example, and when index, lower than 28 or lower than 25, output module produces screen-picture and the warning of sounding as a result, then the alert data value is transported to secondary rule base module.If exponent data is 30, its data, in rational scope, can not meet the first-order rule storehouse, so these data are filtered out by the first-order rule storehouse, it are not processed.
Take cross temperature four point edge temperature-averaging values and throat temperature ratio and cross temperature four point edge temperature-averaging values and furnace throat temperature ratio is example, if cross temperature four point edge temperature-averaging values and throat temperature ratio are higher than 0.80 or higher than 0.85, cross temperature four point edge temperature-averaging values and furnace throat temperature ratio are higher than 1.50 or higher than 1.65 simultaneously, output module produces screen-picture and the warning of sounding as a result, then the alert data value is transported to secondary rule base module.If cross temperature four point edge temperature-averaging values and throat temperature ratio are 0.82, but cross temperature four point edge temperature-averaging values and furnace throat temperature ratio are 1.45, its data are still thought in rational scope, can not meet the first-order rule storehouse, therefore these data are filtered out by the first-order rule storehouse, it are not processed.
3. secondary rule base module
On the basis of first-order rule, according to the technique between certain several one-parameter, secondary rule base (operational stage rule base) is set up in contact.In other words, while only having blast furnace data to meet alert if, can not judge the working of a furnace of blast furnace fully, need one group of blast furnace data to satisfy condition simultaneously and just can think that the blast furnace abnormal fluctuates.Therefore, can set up the secondary rule base according to the blast furnace practical situation, when the satisfied alert if separately of certain several one-parameter data, they have met again secondary rule base defined terms simultaneously, can be according to secondary rule base trigger alarm or blast furnace operating (referring to Fig. 3).For example blast furnace " hanging " state secondary rule needs supplemental characteristic that material chi, material chi lowering speed are arranged.When the material footage, when meeting high alarm setting 2, and material chi lowering speed can form " hanging " state of secondary rule while also meeting high alarm setting 2 simultaneously.In this example, when expecting that footage is according to according to the secondary rule, meeting following condition: material footage certificate is higher than 0.3m (high alarm setting 2), while expecting the chi lowering speed lower than 0.002m/s (high alarm setting 2), and output module produces screen-picture and audible alarm as a result.If a plurality of one-parameters in the rule defined in the secondary rule base all do not meet alert if separately, when the meeting tier 2 rule base is irregular, the secondary rule base filters out its information, think that it is on not impact of blast furnace, screen-picture and audible alarm also are failure to actuate, but go back to the first-order rule storehouse, carry out respective handling.In this example, if the material footage is according to according to the secondary rule definition being: the material footage according to higher than 0.3m (high alarm setting 2), material chi lowering speed lower than 0.002m/s (high alarm setting 2).If the material footage according to higher than 0.3m (high alarm setting 2), material chi lowering speed higher than 0.002m/s (high alarm setting 1), the secondary rule base filters out its information, think that it is on not impact of blast furnace, screen-picture and audible alarm also are failure to actuate, but go back to the first-order rule storehouse, carry out respective handling.
4. output module as a result
According to the result of determination to different pieces of information and feature, classification sends on the screen of terminal of operation department or master control room.While only needing to remind the blast furnace operating personnel as result of determination, only need be according to the judgement situation, alarming result is shown to computer screen with the form of picture; When as very urgent as result of determination, can be according to practical situation, when alarming result being shown to computer screen with the form of picture and sounding and report to the police, the blast furnace operating of taking measures rapidly to intervene, avoid blast furnace fluctuation or abnormal, while such as the actual value when material chi or continuous two batch material chi data difference, reaching the bound of setting, can change burden distribution system or properly distributed Gas Flow by closed loop topworks, stablize conditions of blast furnace.
5. rules administration module
At first first-order rule and secondary rule set up basic rule base by the expert of iron-smelting process according to production technology principle, and in use, furnace superintendent can according to State of Blast Furnace labour and raw material condition be modified and the parameter increase and decrease.Such as the recent coke quality of blast furnace is bad, both can be using M40 as parameter of measurement: sampling interval (30 minutes), retardation time (120～180 minutes), low alarm limit 2 (80%), low alarm limit 1 (78%); Using M10 also as parameter of measurement: sampling interval (30 minutes), retardation time (120～180 minutes), high alarm setting 1 (7.0%), high alarm setting 2 (7.2%).By that analogy, just can constantly adjust and substantial rule base.
Claims (7)
1. the blast furnace hanging determination methods that a based on data filters, is characterized in that comprising and set up digital sampling and processing, first-order rule library module, secondary rule base module, output module and regular maintenance module as a result; The data in first-order rule storehouse are and material chi and material chi lowering speed correlation parameter and correlation parameter thresholding, comprise that hot-blast pressure, air quantity, hot-blast pressure and air quantity ratio, permeability index, throat temperature, furnace throat temperature, cross temperature four point edge temperature, cross temperature four point edge temperature-averaging values and throat temperature ratio, cross temperature four point edge temperature-averaging values and furnace throat temperature ratio, molten iron [Si] content, stove heat number, the ore deposit after normalization method is calculated criticize heavy and coke (per) charge anharmonic ratio value, the interior coke quantity of adding of smelting cycle simultaneously; Each parameter that secondary rule base data are the output of first-order rule storehouse surpasses the thresholding alert data; By the first-order rule library module, the data in the blast furnace actual motion of data collecting module collected are implemented to filter the monitoring one-parameter variation of blast furnace and fluctuation; By common variation and the fluctuation of secondary rule base module monitors blast furnace multiparameter; When the one-parameter data do not meet the alarm limit of first-order rule regulation, its data are filtered out by the first-order rule storehouse automatically, when the one-parameter data meet the alarm limit of first-order rule regulation, according to first-order rule, through output module trigger alarm or direct intervention blast furnace operating as a result, the data that simultaneously will meet first-order rule alarm limit trigger alarm are sent into the secondary rule base and are processed; When the multiparameter data of sending into the secondary rule base not during the alarm limit of meeting tier 2 rule predetermining, its data are filtered out by the secondary rule base automatically, when the alarm limit of the multiparameter data meeting tier 2 rule predetermining of sending into the secondary rule base, according to the secondary rule through output module trigger alarm as a result.
2. the blast furnace hanging determination methods that based on data according to claim 1 filters, it is characterized in that the data in the blast furnace actual motion are provided by on-the-spot second computer, it is the sequence data of one group of fixed cycle, the sampling interval provided according to the first-order rule storehouse is stored by minimum sampling interval above-mentioned data, every some data record average, maximum value and minimum value simultaneously, use one of them or be used in combination according to processing requirement, the data of collection store in database.
3. the blast furnace hanging determination methods that based on data according to claim 1 filters, it is characterized in that described first-order rule storehouse is to set up according to the requirement of technique needs or secondary rule base, according to the technique needs, record parameter sampling interval, the retardation time with respect to current molten iron, alarm limit, wherein alarm limit divides one, two two-stages, every grade is divided upper or lower limit according to its effect, and regular record is kept in database; According to the requirement of secondary rule base, the input parameter that the secondary rule base is needed, as first-order rule storehouse Output rusults, is back-calculated to obtain the first-order rule storehouse rule corresponding according to secondary rule base required input parameter.
4. the blast furnace hanging determination methods that based on data according to claim 1 filters is characterized in that described secondary rule base is on the basis of first-order rule, and according to the technique between two or more one-parameters, contact is set up; When two or more one-parameter data meet alert if separately, they have met again secondary rule base defined terms simultaneously, can be according to secondary rule base trigger alarm or blast furnace operating; If only there are several one-parameters to meet alert if separately, when the meeting tier 2 rule base is irregular, screen-picture and audible alarm also are failure to actuate, but according to the rule in first-order rule storehouse, it are carried out to respective handling.
5. the blast furnace hanging determination methods that based on data according to claim 1 filters, it is characterized in that according to the result of determination to different pieces of information and feature, comprise the result drawn according to first-order rule storehouse and secondary rule base, classification sends on the screen of terminal of operation department or master control room.
6. the blast furnace hanging determination methods that based on data according to claim 1 filters, it is characterized in that at first first-order rule storehouse and secondary rule base set up according to production technology principle, in use, according to State of Blast Furnace labour and raw material condition, modify and the parameter increase and decrease.
7. the blast furnace hanging determination methods that based on data according to claim 1 filters, is characterized in that expecting that footage is according to comprise sampling interval 5 seconds, 0 second retardation time, high alarm setting I0.5m, high alarm setting II0.3m, low alarm limit II0m, low alarm limit I0m; Material chi lowering speed comprises sampling interval 5 seconds, 0 second retardation time, high alarm setting I0.004m/s, high alarm setting II0.002m/s, low alarm limit II0m, low alarm limit I 0m; Hot-blast pressure and the air quantity ratio data computation period after normalization method is calculated 1 minute, high alarm setting I1.1, high alarm setting II1.2; Stove heat number computation period 1 hour, low alarm limit II0.65, low alarm limit I0.75; Permeability index computation period 1 minute, low alarm limit II25, low alarm limit I28; Cross temperature four point edge temperature-averaging values and 1 minute throat temperature ratio calculation cycle, high alarm setting I0.80, high alarm setting II0.85; Cross temperature four point edge temperature-averaging values and 1 minute furnace throat temperature ratio calculation cycle, high alarm setting I1.50, high alarm setting II1.65.When material footage certificate, higher than 0.3m or higher than 0.5m, output module produces screen-picture and the warning of sounding as a result; When material chi lowering speed, lower than 0.004m/s or lower than 0.002m/s, output module produces screen-picture and the warning of sounding as a result; When hot-blast pressure and air quantity, the ratio after normalization method is calculated is higher than 1.1 or higher than 1.2, and output module produces screen-picture and the warning of sounding as a result; When the stove heat number, lower than 0.75 or lower than 0.65, output module produces screen-picture and the warning of sounding as a result; When permeability index, lower than 25 or lower than 28, output module produces screen-picture and the warning of sounding as a result; When cross temperature four point edge temperature-averaging values and throat temperature ratio higher than 0.80 or higher than 0.85, cross temperature four point edge temperature-averaging values and furnace throat temperature ratio are higher than 1.50 or higher than 1.65 simultaneously, output module produces screen-picture and the warning of sounding as a result, then, the alert data value is transported to secondary rule base module.
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| CN201210089565.2A CN103361454B (en) | 2012-03-30 | 2012-03-30 | Data-filtering-based method for judging blast furnace hanging |
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| CN109306385A (en) * | 2018-10-29 | 2019-02-05 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of blast furnace top pressure stabilizing control system and its control method |
| CN110991772A (en) * | 2019-12-27 | 2020-04-10 | 安徽工业大学 | Efficient furnace protection method for predicting final slag viscosity model of converter |
| CN111210599A (en) * | 2019-12-11 | 2020-05-29 | 南京连易智能科技有限公司 | Chemical industry index early warning method and system, electronic equipment and storage medium |
| CN112111618A (en) * | 2020-09-22 | 2020-12-22 | 攀钢集团研究院有限公司 | Blast furnace burden descending uniformity judgment and early warning method and system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306385A (en) * | 2018-10-29 | 2019-02-05 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of blast furnace top pressure stabilizing control system and its control method |
| CN111210599A (en) * | 2019-12-11 | 2020-05-29 | 南京连易智能科技有限公司 | Chemical industry index early warning method and system, electronic equipment and storage medium |
| CN110991772A (en) * | 2019-12-27 | 2020-04-10 | 安徽工业大学 | Efficient furnace protection method for predicting final slag viscosity model of converter |
| CN110991772B (en) * | 2019-12-27 | 2023-04-18 | 安徽工业大学 | Efficient furnace protection method for predicting final slag viscosity model of converter |
| CN112111618A (en) * | 2020-09-22 | 2020-12-22 | 攀钢集团研究院有限公司 | Blast furnace burden descending uniformity judgment and early warning method and system |
| CN112111618B (en) * | 2020-09-22 | 2022-06-03 | 攀钢集团研究院有限公司 | Blast furnace burden descending uniformity judgment and early warning method and system |
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