CN105400915B - A kind of method and system of quantitative assessment top gas flow distribution - Google Patents
A kind of method and system of quantitative assessment top gas flow distribution Download PDFInfo
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- CN105400915B CN105400915B CN201511008241.1A CN201511008241A CN105400915B CN 105400915 B CN105400915 B CN 105400915B CN 201511008241 A CN201511008241 A CN 201511008241A CN 105400915 B CN105400915 B CN 105400915B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/006—Automatically controlling the process
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Abstract
The present invention provides a kind of method and system of quantitative assessment top gas flow distribution, and this method includes：Step one, the capture setting gas temperature of each measurement point, flow parameters on blast furnace roof；Step 2, the radial distribution model in furnace roof region is set up according to the quantity of measurement point and its radial distribution, determines the central area, intermediate region and fringe region of furnace roof region gas flow distribution；Step 3, the Gas Flow that the central area, intermediate region and fringe region of furnace roof region gas flow distribution are calculated respectively quantifies characterization parameter；Step 4, the Gas Flow according to obtained by each region quantifies the gas fluid distrbution evaluation number that characterization parameter calculates each region；Step 5, the blast furnace roof according to obtained by calculating carries out quantitative assessment in the gas fluid distrbution evaluation number in each region to gas fluid distrbution.The problem of blast furnace operating personnel judge stock gas stream radial distribution power according only to experience and furnace roof measurement data and brought is solved, so as to improve the level of blast furnace operating adjustment.
Description
Technical field
The present invention relates to aided control technology field in blast furnace ironmaking, more particularly to a kind of quantitative assessment blast furnace roof coal
The method and system of air flow method.
Background technology
Inside blast furnace, there is the round table-like black of many physical-chemical reactions until furnace roof is one from inlet horizontal line
Case, move toward one another is formed between the Gas Flow flowed up and the bed of material moved downward.In process of production, for coal gas in stove
Flow distribution is adjusted and controlled, and is the important content of blast furnace regular job.Whether gas stream in the stove distribution is smooth, reasonable, to height
Stove production efficiency has particularly important influence, meanwhile, it is also to improve pig iron production capacity, reduction fuel consumption, the extension life of the blast furnace
Key.If the control being distributed to gas stream in the stove is unreasonable, every production and technical indication of blast furnace will be greatly affected, so that
Stabilization, normal production are unable to maintain that, negative consequence will also result in prolonging campaign.
In modern blast furnace construction, in order to detect the distribution situation of Gas Flow in stove in time, furnace roof cross is usually mounted with
The temperature and speed measuring device such as thermometric and infrared photography, with reference to other detection means in shaft region, to carry out stock gas flow distribution
Monitoring.But, carry out all also being based only on section chief's experience and detection data during gas flow optimized in most of blast furnace operatings in practice
Rough qualitative judgement is carried out, lacks effective quantitative evaluation and overall merit means.Pass through integrated application furnace roof measurement apparatus
Detection data, carry out the quantitative assessment of top gas flow distribution, made preferably to combine itself and roof material distributing, air-supply
Relation between degree etc., is possible to provide more direct gas flow optimized and working of a furnace basis for estimation for blast furnace operating person, in blast furnace
Corresponding control parameter is determined in operation, stabilization and the direct motion of blast furnace operating is kept.
However, the evaluation method of existing blast furnace gas flow distribution is simple to be used as air-flow point using air velocity or gas flow
The Appreciation gist of cloth, do not take into full account each zoning Gas Flow to the contribution produced by stock gas overall heat level and
Influence, it is difficult to distribution situation that is true, reflecting stock gas stream exactly.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of quantitative assessment blast furnace roof coal
The method and system of air flow method are simple with air velocity or coal gas for solving gas fluid in blast furnace Evaluation on distribution in the prior art
Flow is used as air flow method Appreciation gist, it is impossible to the problem of really and accurately reacting furnace roof gas fluid distrbution.
In order to achieve the above objects and other related objects, the present invention provides a kind of quantitative assessment top gas flow distribution
Method, including：
Step one, the gas temperature parameter and gas speed parameter of capture setting each measurement point on the blast furnace roof；
Step 2, the radial distribution model in furnace roof region is set up according to the quantity of the measurement point and its radial distribution,
Determine the central area, intermediate region and fringe region of furnace roof region gas flow distribution；
Step 3, according to the gas temperature parameter and gas speed parameter of each measurement point, calculates furnace roof region coal gas respectively
The Gas Flow of the central area of distribution, intermediate region and fringe region quantifies characterization parameter；
Step 4, the gas fluid distrbution evaluation that the Gas Flow according to obtained by each region quantifies each region of characterization parameter calculating refers to
Number；
Step 5, blast furnace roof according to obtained by calculating each region gas fluid distrbution evaluation number, to the coal gas
Flow distribution carries out quantitative assessment.
Another object of the present invention is to a kind of system of quantitative assessment top gas flow distribution, including：
Data acquisition module, suitable for passing through OPC technology, capture setting each measurement point in blast furnace roof temperature and speed measuring device
Measured gas temperature parameter and gas speed parameter；
Data memory module, suitable for by the gas temperature parameter of collection and gas speed parameter, database service is arrived in storage
Database on device, is further adapted for managing all data stored in database；
Data preprocessing module, suitable for based on expertise, rejecting in the gas temperature and gas speed gathered
Abnormal data, and combine the data progress completion of the historical data and neighboring area data of each measurement point to having rejected；
Model computation module, suitable for the gas temperature parameter and gas speed gathered according to blast furnace roof temperature and speed measuring device
Parameter and configuration parameter, calculate the Gas Flow quantization signifying ginseng of stock gas distribution center region, intermediate region and fringe region
Number, and based on calculate gained Gas Flow quantify characterization parameter correspondence calculate stock gas distribution center region, intermediate region and
The gas fluid distrbution evaluation number of fringe region；
Output control module, suitable for the output mode according to setting, extracts the furnace roof coal obtained by calculating from database
The gas fluid distrbution evaluation number of qi leel cloth central area, intermediate region and fringe region, correspondingly with cake chart, tendency chart or
The mode of Model Diagnosis is shown to gas fluid distrbution evaluation number.
As described above, the method and system of the quantitative assessment top gas flow distribution of the present invention, with following beneficial
Effect：
Gas temperature parameter and gas speed parameter of the invention by obtaining each measurement point on the blast furnace roof, according to
The quantity of measurement point and its radial distribution set up the radial distribution model in furnace roof region, and blast furnace is determined according to radial distribution model
Stock gas flow center, intermediate region and fringe region, calculate its Gas Flow quantization characterization parameter and are commented with gas fluid distrbution respectively
Valency index, so as to carry out quantitatively evaluating to top gas distribution, it is to avoid it is simple using air velocity or gas flow as
The drawbacks of air flow method Appreciation gist, solve blast furnace operating personnel and simply judge furnace roof according only to experience and furnace roof measurement data
Gas Flow radial distribution is strong and weak and the problem of bring, the problem of truely and accurately reacting furnace roof gas fluid distrbution, so as to improve
The level of blast furnace operating adjustment.
Brief description of the drawings
Fig. 1 is shown as the method flow diagram of the quantitative assessment top gas flow distribution of the present invention；
Fig. 2 is shown as the blast furnace roof cross temperature speed measuring device schematic diagram of the present invention；
Fig. 3 is shown as the system construction drawing of the quantitative assessment top gas flow distribution of the present invention；
The system interface that Fig. 4 is shown as the blast furnace quantitative assessment top gas flow distribution of the present invention shows sectional drawing；
Fig. 5 is shown as the system program flow chart of the quantitative assessment top gas flow distribution of the present invention.
Component label instructions
11 cantilever temperature and speed measuring bars
12 measurement points
13 central circular regions
14 annular sections
30 blast furnace production process
31 OPC communication interfaces
32 data acquisition modules
33 data memory modules
34 data preprocessing modules
35 model computation modules
36 output control modules
S1~S5 steps one are to step 5
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that, in the case where not conflicting, following examples and implementation
Feature in example can be mutually combined.
It should be noted that the diagram provided in following examples only illustrates the basic structure of the present invention in a schematic way
Think, then in schema only display with relevant component in the present invention rather than according to component count, shape and the size during actual implement
Draw, it is actual when implementing, and kenel, quantity and the ratio of each component can be a kind of random change, and its assembly layout kenel
It is likely more complexity.
Embodiment one
Referring to Fig. 1, the present invention provides a kind of method flow diagram of quantitative assessment top gas flow distribution, including：
In step S101, the gas temperature parameter and gas speed of capture setting each measurement point on the blast furnace roof
Parameter；
Wherein, temperature and speed measuring device is provided with the blast furnace roof, the temperature and speed measuring device is by one long and M roots
Short cantilever temperature and speed measuring bar composition (M+1 roots cantilever temperature and speed measuring bar altogether), blast furnace throat position by flange perpendicular to
Furnace throat side wall is provided with the cantilever temperature and speed measuring bar that M+1 roots are in equal angular direction, wherein, short cantilever temperature and speed measuring bar is provided with
N number of measurement point, long cantilever temperature and speed measuring bar is provided with N+1 measurement point, and M, N are the natural number less than 10.
The temperature and speed measuring device is the how short cantilever temperature and speed measuring bar composition of a length, is surveyed relative to overall cross temperature
Speed variator, is more favorable for installing and safeguards；Meanwhile, the cantilever temperature and speed measuring bar in equal angular direction is set so that whole cantilever
Temperature and speed measuring bar is in uniform height and level, improves gathered data accuracy, and long cantilever temperature and speed measuring bar is close high
Stove furnace roof center is set to center measurement point.
Specifically, on the measurement point, the cantilever temperature and speed measuring bar installed in M+1 roots in equal angular direction, and every
On cantilever temperature and speed measuring bar numbering be all J measurement point it is equal with the radial distance of center measurement point, wherein, J=1,2 ... ...
N；
The center measurement point, for the measurement of close blast furnace center set on long cantilever temperature and speed measuring bar
Point；
The measurement point is respectively mounted armoured thermocouple and coal gas and tested the speed galvanic couple, and measurement gas temperature and coal gas are corresponded to respectively
Flow parameters.
In the present embodiment, multi-point data acquisition is carried out by temperature and speed measuring device, can reach to blast furnace throat Gas Flow
Radial direction parameter distribution more fully measures the purpose with control.
In step s 102, the radial distribution in furnace roof region is set up according to the quantity of the measurement point and its radial distribution
Model, determines the central area, intermediate region and fringe region of furnace roof region gas flow distribution；
Wherein, the radial distribution model, blast furnace throat is divided into in furnace roof temperature and speed measuring device by radial direction
Heart measurement point is a central circular and N number of annular section in the center of circle；
The central circular and annular section, wherein, outermost layer annular section edge position is by blast furnace throat
Internal diameter determines, central circular and remaining annular section edge position then between adjacent measurement points where annulus circle
Annulus is determined where ring centroid of section；
Annulus where the ring cross-section center of gravity, is place annulus between the radially adjacent two groups of measurement points of blast furnace throat
Annulus determined by centroid of section radius.
In the present embodiment, by the way that blast furnace roof is divided into multiple regions, it can reach the coal gas flow horizontal to each region
Carry out the purpose that subregion is individually calculated.
In step s 103, according to the gas temperature parameter and gas speed parameter of each measurement point, furnace roof area is calculated respectively
The Gas Flow of the central area of domain gas flow distribution, intermediate region and fringe region quantifies characterization parameter；
Wherein, stock gas distribution center region, intermediate region, fringe region Gas Flow quantify characterization parameter, point
Q is not expressed as itCenter、QIt is middle、QEdge, calculated by below equation：
Wherein, Z represents " " center ", " centre ", " edge " respectively；
The region gas temperature, all measurement point gas temperature measured values included in region are by pretreatment with calculating
Art average computation and obtain；
The region gas speed, all measurement point gas velocity measured values or calculated value pass through pre- included in region
Processing is calculated and obtained with arithmetic average；
The furnace top gas temperature, is calculated by stock gas tedge measured temperature by pretreatment with arithmetic average
Arrive；
The stock gas flow velocity, is determined according to the ratio of furnace top coal quantity and furnace throat area；
The furnace top coal quantity, is calculated by gas flowrate in bosh × (1+r), and wherein r is to be chemically reacted by State of Blast Furnace
Process influences, and furnace top coal quantity is compared to the increased percentage of gas flowrate in bosh.
The quantizing characterization parameter central area Q of stock gas can be calculated by above-mentioned formulaCenter, intermediate region QIt is middle, edge
Region QEdge。
In the present embodiment, stock gas distribution center region, intermediate region, fringe region Gas Flow quantify characterization parameter
It can calculate and obtain, characterization parameter is quantified by calculating Gas Flow, can reach and gas fluid distrbution level progress subregion is quantified
The purpose of calculating.
In step S104, the Gas Flow according to obtained by each region quantifies the gas fluid distrbution that characterization parameter calculates each region
Evaluation number；
Wherein, stock gas distribution center region, intermediate region, fringe region gas fluid distrbution evaluation number, point
I is not expressed as itCenter、IIt is middle、IEdge, calculated by below equation：
IZ=QZ/(QCenter+QIt is middle+QEdge)
Wherein, Z represents " " center ", " centre ", " edge " respectively.
In the present embodiment, the accurate gas fluid distrbution evaluation number for calculating regional, can reach to gas fluid distrbution
Each region relative level carries out the purpose of quantitatively evaluating.
In step S105, blast furnace roof according to obtained by calculating each region gas fluid distrbution evaluation number, to institute
State gas fluid distrbution and carry out quantitative assessment.
By presetting top gas flow distribution central area, intermediate region and the management threshold value of fringe region,
Real-time result of calculation to gas fluid distrbution is evaluated, output top gas flow distribution central area, intermediate region, fringe region coal
Air flow method evaluation number, operating personnel grasp according to default management threshold value and real-time gas fluid distrbution evaluation number to blast furnace
It is adjusted, the stability of conditions of blast furnace can be improved, and improve the gas utilization rate of blast fumance.
Embodiment two
Blast furnace roof region, including furnace throat cross temperature speed measuring device is installed and Gas Flow passes the bed of material upwardly through area
Domain, as shown in Fig. 2 being the blast furnace roof cross temperature speed measuring device schematic diagram of the present invention.
In certain iron-smelter 4800m3On blast furnace, furnace roof position furnace throat region is provided with cross temperature speed measuring device, includes
Measurement bar 11, i.e., short (total four) the cantilever temperature and speed measuring bar of one length three, four, blast furnace throat position, measurement bar is in 90 ° of directions
By flange right angle setting, northeast, the southeast, southwest, northwest four direction are respectively at.Measurement point is provided with each measurement bar
12,6 measurement points are respectively arranged with cantilever temperature and speed measuring bar three short, are radially numbered from outside to inside successively along blast furnace throat
Be expressed as 1,2,3 ..., 6；7 measurement points are provided with cantilever temperature and speed measuring bar another long, along blast furnace throat radially from outer
Be represented by 1 successively to interior numbering, 2,3 ..., the 6,7, the 7th measurement point position be blast furnace throat radial center.At four
In mutually perpendicular direction, numbering is J footpath of four measurement points with blast furnace throat center measurement point (measurement point that numbering is 7)
To apart from equal, J=1,2 ..., 6.
Embodiment three
Top gas flow distribution method detail flowchart is evaluated for embodiment is a certain amount of, it is specifically included：
Step one, the gas temperature parameter and gas speed parameter of capture setting each measurement point on the blast furnace roof；
Wherein, the gas temperature, is obtained by the armoured thermocouple measurement on each measurement point position, in four phases
In mutual vertical direction, four groups of gas temperature measured values are expressed as：TNE,1、TNE,2、…、TNE,6、T7；TSE,1、TSE,2、…、
TSE,6；TSW,1、TSW,2、…、TSW,6；TNW,1、TNW,2、…、TNW,6.The unit of each gas temperature measured value is DEG C, wherein, T7For
The gas temperature of center measurement point.
The gas speed, according to parameters such as solid-gas heat flow equation, thickness of feed layer and the gas flow rates of each measurement point position
Between functional relation calculate obtain, in four mutually perpendicular directions, four groups of calculated values are expressed as：vNE,1、vNE,2、…、
vNE,6、v7；vSE,1、vSE,2、…、vSE,6；vSW,1、vSW,2、…、vSW,6；vNW,1、vNW,2、…、vNW,6.Each gas speed calculated value
Unit is m/s.Wherein, v7Centered on measurement point gas speed.
Step 2, the radial distribution model in furnace roof region is set up according to the quantity of the measurement point and its radial distribution,
Determine the central area, intermediate region and fringe region of furnace roof region gas flow distribution；
The radial distribution model, one is divided into cross temperature speed measuring device center by blast furnace throat by radial direction
1 central circular (in such as Fig. 2 13) and 6 annular sections of the measurement point for the center of circle (14 in such as Fig. 2).
The central circular and annular section, wherein, outermost layer annular section edge position is by blast furnace throat
Internal diameter determines, central circular and remaining annular section edge position then between adjacent measurement points where annulus circle
Annulus is determined where ring centroid of section.
Annulus where the ring cross-section center of gravity, is place annulus between the radially adjacent two groups of measurement points of blast furnace throat
Annulus determined by centroid of section radius.
The central area of the stock gas distribution, by central circular C7With close to one of the central circular
Annular section C6Composition.The fringe region of the stock gas distribution, by two ring-types positioned at blast furnace throat outermost radial outside
Region C1And C2Composition.The intermediate region of the stock gas distribution, by positioned at stock gas distribution center region and fringe region
Between remaining annular section constituted, including annular section C3、C4And C5。
Step 3, calculates the Gas Flow of the central area, intermediate region and fringe region of furnace roof region gas flow distribution respectively
Quantization signifying parameter；
Stock gas distribution center region, intermediate region, fringe region Gas Flow quantify characterization parameter, represent respectively
For QCenter、QIt is middle、QEdge, calculated by below equation：
Wherein, Z represents " " center ", " centre ", " edge " respectively.
The furnace top coal quantity, is calculated by gas flowrate in bosh × (1+r).Wherein, r is to be chemically reacted by State of Blast Furnace
Process influences, and furnace top coal quantity is compared to the increased percentage of gas flowrate in bosh；Gas flowrate in bosh is calculated by following formula：
VBG=1.21 × hot blast air quantity+2 × oxygen-enriched flow+(44.8 × air blast hygroscopic water × total hot blast air quantity)/18000
+ (22.4 × injecting coal quantity × coal dust hydrogen content)/12000
Wherein, the parameter such as hot blast air quantity, oxygen-enriched flow, air blast hygroscopic water, total hot blast air quantity, injecting coal quantity, coal dust hydrogen content is equal
To understand parameter by high furnace control system, the unit of gas flowrate in bosh is Nm3/min；The unit of air quantity is Nm3/min；It is oxygen-enriched
The unit of amount is Nm3/min；The unit of humidity is g/Nm3；The unit of injecting coal quantity is kg/h；The unit of coal dust hydrogen content is %.
Step 4, the gas fluid distrbution evaluation that the Gas Flow according to obtained by each region quantifies each region of characterization parameter calculating refers to
Number；
Step 5, blast furnace roof according to obtained by calculating each region gas fluid distrbution evaluation number, to the coal gas
Flow distribution carries out quantitative assessment.
The present embodiment focus on description embodiment one in not deployed ins and outs, the step identical with embodiment one
Details is not repeated one by one herein.
Example IV
The system is programmed using C Plus Plus, and picture is HMI (man-machine interface)；Blast furnace production process 30 is directed to, is passed through
Applied respectively in server and client based on OPC (OLE for being used for process control) mechanics of communication (OPC communication interfaces 31), it is real
When obtain the basic data of blast furnace, and institute's gathered data is stored by database, the database is Oracle11G, is stored
Data, model calculating parameter, the intermediate data in calculating process and result data of the instrument to collect obtained from blast furnace etc..Its
In, the systemic software development uses the kits of Microsoft Visual Studio 2010, specifically referring to Fig. 3, being this
Invention provides a kind of system construction drawing of quantitative assessment top gas flow distribution, including：
Data acquisition module 32, suitable for by OPC technology, capture setting is respectively measured in blast furnace roof temperature and speed measuring device
The measured gas temperature parameter of point and gas speed parameter；
Wherein, in furnace roof cross temperature speed measuring device, the survey constituted comprising the cantilever temperature and speed measuring bar by a three short length
Warm speed measuring device, is installed in 90 ° of directions by flange in four, blast furnace throat position cantilever temperature and speed measuring bar, is respectively at east
North, the southeast, southwest, northwest four direction.Cantilever temperature and speed measuring bar every short is provided with 6 measurement points, long cantilever thermometric
7 measurement points are provided with velocity rod, in four mutually perpendicular directions, numbering is J four measurement points and blast furnace throat
The radial distance of center measurement point (measurement point that numbering is 7) is equal, J=1,2 ..., 6.The collection of data utilizes safety and stability
OPC communications protocol, it is ensured that can in time and stably obtain blast fumance scene sensing data.Data acquisition when
Between be spaced demand calculated according to blast fumance on-site actual situations and model, and with the internal memory processing function of application server,
Using the statistical average that measurement point in this 5 minutes was asked for every 5 minutes.
Data memory module 33, suitable for by the gas temperature parameter of collection and gas speed parameter, storage to database takes
The database being engaged on device, is further adapted for managing all data stored in database；
Data storage control module is used to store the data collected, the pipe of the main storage and parameter for completing data
Reason.In the present embodiment, by data storage control module by data collecting module collected to blast furnace roof cross temperature test the speed
Each measurement point gas temperature data of device and gas speed correlation computations parameter, storage to the Oracle numbers on database server
According in storehouse, and the Various types of data that has been stored in database is responsible for, facilitates output control module to carry out real-time calling.
In the present embodiment, by OPC agreements, server directly obtains required blast furnace roof ten from blast fumance scene
The corresponding data of word temperature and speed measuring device, meanwhile, data server sets up corresponding oracle database to collection, calculating
Corresponding data is stored；Form accurate, stable real-time data acquisition mechanism and safe and reliable data storage mechanism.
Data preprocessing module 34, suitable for based on expertise, rejecting in the gas temperature and gas speed gathered
Abnormal data, and combine the historical data and neighboring area data of each measurement point completion carried out to the data rejected；
, it is necessary to be pre-processed to data after the collection of completion data and the storage of data, to ensure that model calculates institute
Using the legitimacy of data, the result of the data influence for being unlikely to make detection device abnormal to Continuous plus.In data prediction
In module, based on expertise, the abnormal data in the gas temperature and gas speed of collection point collection is rejected, meanwhile,
The dealing of abnormal data based on statistics rule is carried out with reference to the historical data and neighboring area data of collection point, it is flat according to hot-fluid
The principle that weighs completes screening and completion to the temperature samples data of collection, the pretreatment of complete paired data.
In the present embodiment, the data (gas temperature and gas speed) of collection are subjected to abnormity removing, screening and completion
Deng pretreatment so that the data of collection will not cause the data of collection relative to more accurate because of the failure of measurement point devices
It is abnormal.
Model computation module 35, suitable for the gas temperature parameter and Gas Flow gathered according to blast furnace roof temperature and speed measuring device
Fast parameter and configuration parameter, calculate the Gas Flow quantization signifying of stock gas distribution center region, intermediate region and fringe region
Parameter, and quantify characterization parameter correspondence calculating stock gas distribution center region, intermediate region based on gained Gas Flow is calculated
With the gas fluid distrbution evaluation number of fringe region；
The method that model computation module uses quantitative assessment top gas flow distribution involved in the present invention, according to number
Data after Data preprocess, with reference to the configuring condition and configuration parameter of blast furnace roof cross temperature speed measuring device, calculate furnace roof
The Gas Flow of gas flow distribution central area, intermediate region and fringe region quantifies characterization parameter, further based on this result of calculation
Calculate the gas fluid distrbution evaluation number of stock gas distribution center region, intermediate region and fringe region, and by result of calculation
Store in the oracle database on database server.
Output control module 36, suitable for the output mode according to setting, extracts the furnace roof obtained by calculating from database
The gas fluid distrbution evaluation number of gas flow distribution central area, intermediate region and fringe region, correspondingly with cake chart, tendency chart
Or the mode of Model Diagnosis is shown to gas fluid distrbution evaluation number.
As shown in figure 4, the system interface for the blast furnace quantitative assessment top gas flow distribution of the present invention shows sectional drawing,
Output control module is used for the HMI display pictures that programming realization model is applied, and the furnace roof obtained by calculating is extracted from database
The gas fluid distrbution evaluation number of gas flow distribution central area, intermediate region and fringe region, and the display by user to output
Pattern is controlled by.Real-time top gas flow distribution is quantitatively commented in forms such as cake chart, tendency chart, Model Diagnosis outputs
Valency result is shown.
In the present embodiment, using HMI menu display functions, the stock gas point obtained by calculating is extracted from database
The gas fluid distrbution evaluation number of cloth central area, intermediate region and fringe region, it is defeated with cake chart, tendency chart, Model Diagnosis
The form such as go out and shown to calculating gained top gas flow distribution quantitative assessment result in real time, and distribution situation is provided
Variation tendency is shown, realizes Real time displaying and the monitoring of top gas flow distribution situation.
Embodiment five
Referring to Fig. 5, being shown as the system program flow chart of the quantitative assessment top gas flow distribution of the present invention；Bag
Include：
Data acquisition module, gas temperature of the capture setting in blast furnace roof temperature and speed measuring device measured by each measurement point
Parameter and gas speed parameter；
Data memory module, stores the gas temperature parameter and the number on gas speed parameter to database server of collection
According to storehouse, meanwhile, all data stored in management database；
Judge whether it is abnormal data that corresponding gas temperature parameter is stored in database with gas speed parameter, when described
When gas temperature parameter exceeds default expertise data with gas speed parameter, then judge the data of collection as abnormal number
According to；Log-on data pretreatment module, based on expertise, rejects the gas temperature parameter and gas speed of collection point collection
Abnormal data in parameter, meanwhile, carried out with reference to the historical data and neighboring area data of collection point based on statistics rule
Dealing of abnormal data, screening and completion to the temperature samples data of collection, complete paired data are completed according to hot-fluid equilibrium principle
Pretreatment, carry out next step.
When the gas temperature parameter and gas speed parameter are without departing from default expertise data, then collection is judged
The data be normal data, carry out next step.
Model computation module, suitable for the gas temperature parameter and gas speed gathered according to blast furnace roof temperature and speed measuring device
Parameter and configuration parameter, calculate the Gas Flow quantization signifying ginseng of stock gas distribution center region, intermediate region and fringe region
Number, and based on calculate gained Gas Flow quantify characterization parameter correspondence calculate stock gas distribution center region, intermediate region and
The gas fluid distrbution evaluation number of fringe region；
Output control module, suitable for the output mode according to setting, extracts the furnace roof coal obtained by calculating from database
The gas fluid distrbution evaluation number of qi leel cloth central area, intermediate region and fringe region, correspondingly with cake chart, tendency chart or
The mode of Model Diagnosis is shown to gas fluid distrbution evaluation number.
In summary, the present invention is joined by obtaining the gas temperature of each measurement point and gas speed on the blast furnace roof
Number, the radial distribution model in furnace roof region is set up according to the quantity of measurement point and its radial distribution, according to radial distribution model
Top gas flow center, intermediate region and fringe region are determined, its Gas Flow is calculated respectively and quantifies characterization parameter and coal gas
Flow distribution evaluation number, so as to carry out quantitatively evaluating to top gas distribution, it is to avoid simple with air velocity or coal gas
The drawbacks of flow is as air flow method Appreciation gist, solves blast furnace operating personnel simple according only to experience and furnace roof measurement data
The problem of judging stock gas stream radial distribution strong and weak and bring, truely and accurately reacts furnace roof gas fluid distrbution situation, so that
Improve blast furnace operating adjustment level.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial
Value.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (8)
1. a kind of method of quantitative assessment top gas flow distribution, it is characterised in that including：
Step one, the gas temperature parameter and gas speed parameter of capture setting each measurement point on the blast furnace roof；
Step 2, the radial distribution model in furnace roof region is set up according to the quantity of the measurement point and its radial distribution, it is determined that
Central area, intermediate region and the fringe region of furnace roof region gas flow distribution；
Step 3, according to the gas temperature parameter and gas speed parameter of each measurement point, calculates furnace roof region gas flow distribution respectively
Central area, the Gas Flow of intermediate region and fringe region quantify characterization parameter；
Step 4, the Gas Flow according to obtained by each region quantifies the gas fluid distrbution evaluation number that characterization parameter calculates each region；
Step 5, blast furnace roof according to obtained by calculating each region gas fluid distrbution evaluation number, to the coal gas flow point
Cloth carries out quantitative assessment.
2. the method for quantitative assessment top gas flow distribution according to claim 1, it is characterised in that the step
One specific steps, including：
Temperature and speed measuring device is provided with the blast furnace roof, the temperature and speed measuring device is by the one long and short cantilever of M roots
Temperature and speed measuring bar is constituted, and M+1 roots are provided with equal angular direction perpendicular to furnace throat side wall by flange at blast furnace throat position
Cantilever temperature and speed measuring bar, wherein, short cantilever temperature and speed measuring bar is provided with N number of measurement point, and long cantilever temperature and speed measuring bar is provided with N
+ 1 measurement point, M, N are the natural number less than 10.
3. the method for quantitative assessment top gas flow distribution according to claim 2, it is characterised in that including：
On the measurement point, the cantilever temperature and speed measuring bar installed in M+1 roots in equal angular direction, and every cantilever temperature and speed measuring
On bar numbering be all J measurement point it is equal with the radial distance of center measurement point, wherein, J=1,2 ... ... N；
The center measurement point, for the measurement point of close blast furnace center set on long cantilever temperature and speed measuring bar；
The measurement point is respectively mounted armoured thermocouple and coal gas and tested the speed galvanic couple, and measurement gas temperature parameter and coal gas are corresponded to respectively
Flow parameters.
4. the method for quantitative assessment top gas flow distribution according to claim 1, it is characterised in that the step
Two specific steps, including：
The radial distribution model, by blast furnace throat by radial direction be divided into using furnace roof temperature and speed measuring device center measurement point as
One central circular in the center of circle and N number of annular section；
The central circular and annular section, wherein, outermost layer annular section edge position is by blast furnace throat internal diameter
It is determined that, the ring cross-section of central circular and remaining annular section edge position annulus where between adjacent measurement points
Annulus is determined where center of gravity；
Annulus where the ring cross-section center of gravity, is the section of place annulus between the radially adjacent two groups of measurement points of blast furnace throat
Annulus determined by radius of gravity center.
5. the method for quantitative assessment top gas flow distribution according to claim 4, it is characterised in that including：
The central area of the stock gas distribution, by central circular and several ring-types close to the central circular
Region is constituted, and the region gross area accounts for the 10% of the furnace throat section gross area；
The fringe region of the stock gas distribution, is made up of several annular sections positioned at blast furnace throat outermost radial outside,
The region gross area accounts for the 30% of the furnace throat section gross area；
The intermediate region of the stock gas distribution, by remaining between stock gas distribution center region and fringe region
Annular section is constituted, and the region gross area accounts for the 60% of the furnace throat section gross area.
6. the method for quantitative assessment top gas flow distribution according to claim 1, it is characterised in that the step
Three specifically include：
Stock gas distribution center region, intermediate region, fringe region Gas Flow quantify characterization parameter, are expressed as
QCenter、QIt is middle、QEdge, calculated by below equation：
Wherein, Z represents " " center ", " centre ", " edge " respectively；
The region gas temperature, all measurement point gas temperature measured values included in region are put down by pretreatment with arithmetic
Calculate and obtain；
The region gas speed, all measurement point gas velocity measured values or calculated value included in region pass through pretreatment
Calculate and obtain with arithmetic average；
The furnace top gas temperature, is calculated with arithmetic average by pretreatment by stock gas tedge measured temperature and obtained；
The stock gas flow velocity, is determined according to the ratio of furnace top coal quantity and furnace throat area；
The furnace top coal quantity, is calculated by gas flowrate in bosh × (1+r), and wherein r is by chemical reaction process in State of Blast Furnace
Influence, furnace top coal quantity is compared to the increased percentage of gas flowrate in bosh.
7. the method for quantitative assessment top gas flow distribution according to claim 1, it is characterised in that the step
Four specifically include：
Stock gas distribution center region, intermediate region, fringe region gas fluid distrbution evaluation number, are expressed as
ICenter、IIt is middle、IEdge, calculated by below equation：
IZ=QZ/(QCenter+QIt is middle+QEdge)
Wherein, Z represents " " center ", " centre ", " edge " respectively.
8. a kind of system of quantitative assessment top gas flow distribution, it is characterised in that including：
Data acquisition module, suitable for by OPC technology, capture setting each measurement point in blast furnace roof temperature and speed measuring device is surveyed
The gas temperature parameter obtained and gas speed parameter；
Data memory module, suitable for storing the gas temperature parameter of collection and gas speed parameter onto database server
Database, be further adapted for managing all data for storing in database；
Data preprocessing module, suitable for based on expertise, rejecting the exception in the gas temperature and gas speed of collection
Data, and combine the data progress completion of the historical data and neighboring area data of each measurement point to having rejected；
Model computation module, suitable for gas temperature parameter and the gas speed parameter gathered according to blast furnace roof temperature and speed measuring device
And configuration parameter, the Gas Flow quantization characterization parameter of stock gas distribution center region, intermediate region and fringe region is calculated, with
And quantify characterization parameter correspondence calculating stock gas distribution center region, intermediate region and marginal zone based on gained Gas Flow is calculated
The gas fluid distrbution evaluation number in domain；
Output control module, suitable for the output mode according to setting, extracts the stock gas point obtained by calculating from database
The gas fluid distrbution evaluation number of cloth central area, intermediate region and fringe region, correspondingly with cake chart, tendency chart or model
The mode of diagnosis is shown to gas fluid distrbution evaluation number.
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| CN105950806B (en) * | 2016-05-17 | 2017-12-12 | 中南大学 | A kind of method and device for being used to determine the low soot region in blast furnace roof |
| CN105986048A (en) * | 2016-07-27 | 2016-10-05 | 山西太钢不锈钢股份有限公司 | Blast furnace riser temperature detection method |
| CN108396085A (en) * | 2017-02-05 | 2018-08-14 | 鞍钢股份有限公司 | Method for calculating furnace waist gas quantity index in blast furnace production process |
| CN107515999B (en) * | 2017-10-13 | 2019-01-01 | 中南大学 | A method of for determining the movement of top gas stream and Dust distribution |
| CN108896197A (en) * | 2018-05-22 | 2018-11-27 | 安徽瑞鑫自动化仪表有限公司 | A kind of intelligent thermometric regulator control system under hot environment |
| CN109022650B (en) * | 2018-09-29 | 2020-06-16 | 武汉钢铁有限公司 | Method for identifying distribution of upper gas flow of blast furnace |
| CN110752042B (en) * | 2019-10-16 | 2022-03-11 | 广东韶钢松山股份有限公司 | Blast furnace hearth state determination method and device and electronic equipment |
| CN112798814B (en) * | 2019-11-14 | 2023-09-01 | 广州汽车集团股份有限公司 | Wind speed distribution testing method and system |
| CN110760633A (en) * | 2019-11-26 | 2020-02-07 | 中冶赛迪重庆信息技术有限公司 | Method and device for controlling distribution of air flow in blast furnace, storage medium and electronic terminal |
| CN114154787A (en) * | 2021-10-26 | 2022-03-08 | 中冶南方工程技术有限公司 | Blast furnace condition on-line evaluation system |
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| JPH09287008A (en) * | 1996-04-19 | 1997-11-04 | Nippon Steel Corp | Method for estimating distribution of layer thickness of charged material, in blast furnace |
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| KR101193749B1 (en) * | 2010-07-29 | 2012-10-22 | 인하대학교 산학협력단 | method for anlyzing gas flow of blast furnace |
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