CN206828595U - A kind of online pre-control device of pelletizing production technique - Google Patents
A kind of online pre-control device of pelletizing production technique Download PDFInfo
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- CN206828595U CN206828595U CN201720685888.6U CN201720685888U CN206828595U CN 206828595 U CN206828595 U CN 206828595U CN 201720685888 U CN201720685888 U CN 201720685888U CN 206828595 U CN206828595 U CN 206828595U
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Abstract
This application discloses a kind of online pre-control device of pelletizing production technique, described device includes：Industrial computer, some temperature measuring equipments, pressure gauge and the PLC system electrically connected respectively with the temperature measuring equipment, pressure gauge, wherein, the PLC system and industry control mechatronics；The temperature measuring equipment is separately positioned on drying grate, in divide in advance along pelletizing process flow direction inside rotary kiln some sections；Corresponding to the pressure gauge be separately positioned on that the drying grate divides along pelletizing process flow direction in advance some sections on the upside of grate, and corresponding to the drying grate divide in advance along pelletizing process flow direction some sections on the downside of grate, and the kiln hood and kiln tail of the rotary kiln.The utility model can quick and precisely judge ring formation of rotary kiln state and trend, in advance prevention or treatment ring formation, meet grate-kiln pelletizing process production Effec-tive Function demand.
Description
Technical field
It the utility model is related to grate kiln production pelletizing field, more particularly to a kind of pelletizing production technique is online
Pre-control device.
Background technology
It by iron ore concentrate, bentonite (such as bentonite) and water by machine-shaping is spherical material that the production process of pelletizing, which is,
Through high-temperature roasting by all evaporations and by Fe of the moisture in pelletizing3O4It is oxidized to Fe2O3, make up to certain physical property, change
Learn the process of the production target such as performance and shape need.Pelletizing production technique mainly has two kinds：Shaft furnace process and chain are combed
Machine-rotary kiln technology, wherein, grate kiln technique, can be very well because pellet quality that it is produced is good, intensity is high
The requirement for meeting large blast furnace production, and with to the strong adaptability of raw material, energy consumption and the advantages such as production cost is low, gradually into
For the main production of China's pellet production.
At present, as shown in figure 1, grate kiln technique mainly has three big equipment：Drying grate 01, rotary kiln 02 and ring
Cold 03, petticoat pipe 04 is integrally covered with drying grate 01, petticoat pipe 04 plays a part of sealed thermal insulating to drying grate 01；Drying grate 01
Both sides are respectively provided with bellows total pipeline 05, and the bellows total pipeline 05 is provided with some bellows；The bottom of drying grate 01 sets exhausting
Machine, drying grate 01 connect with air exhauster, and air exhauster connects with bellows；Drying grate 01 connects with the kiln tail of rotary kiln 02, rotary kiln
Kiln hood be provided with mobile burner 021.After the qualified green-ball that upper track technique makes enters drying grate 01, chain comb is evenly distributed on
In the grate of machine 01, be arranged on the air exhauster of the bottom of drying grate 01 and hot blast be pumped into drying grate 01, from top to bottom to green-ball enter
Row is dried and preheating, and the waste gas after drying and preheating imports bellows total pipeline and diffused through processing.When green-ball reaches certain intensity
And entering rotary kiln from rotary kiln during temperature, the flame that mobile burner 021 sprays carries out oxidizing roasting, roasting knot to green-ball
It is discharged into central cooler 03 after beam to cool down, so as to obtain pelletizing.Because rotary kiln is the high temperature oxidation roasting stage, green-ball is quick-fried in roasting process
The reason such as split and have powder accumulation on rotary kiln inwall, the long-term overbaking of these powder can solidify hardened formation ring formation.Mesh
Before, peep-hole generally is set in rotary kiln, artificial range estimation judges on rotary kiln inwall whether ring formation and to carry out PROCESS FOR TREATMENT.
But manually estimated by peep-hole judge on rotary kiln inwall whether ring formation method it is inaccurate, when finding back
When having ring formation on rotary kiln inwall, ring formation can only now shut down rotary kiln often than more serious, carry out taking off block processing, from
And substantially reduce the production efficiency of pelletizing.Therefore, there is an urgent need to a kind of online pre-control device, pelletizing production technique is carried out pre-
Control, prevent that ring formation is serious and production efficiency caused by stopping production processing reduces.
Utility model content
The utility model provides a kind of online pre-control device of pelletizing production technique, to solve above-mentioned technical problem.
The utility model provides a kind of online pre-control device of pelletizing production technique, and described device includes：Industrial computer, some surveys
Warm device, pressure gauge and the PLC system electrically connected respectively with the temperature measuring equipment, pressure gauge, wherein,
The PLC system and industry control mechatronics；
If the temperature measuring equipment is separately positioned on drying grate, is divided in advance along pelletizing process flow direction inside rotary kiln
In dry section；
The pressure gauge is separately positioned on some sections of correspondences that the drying grate divides in advance along pelletizing process flow direction
Grate on the upside of, and corresponding to the drying grate divide in advance along pelletizing process flow direction some sections on the downside of grate, with
And the kiln hood and kiln tail of the rotary kiln.
Preferably, the temperature measuring equipment of the drying grate is separately positioned on drying grate and divided in advance along pelletizing process flow direction
The first dryer section, the second dryer section, the first preheating section and the second preheating section correspond on the drying grate inwall on the upside of grate.
Preferably, the temperature measuring equipment of the drying grate is separately positioned on drying grate and divided in advance along pelletizing process flow direction
The first dryer section, the second dryer section, the first preheating section and the second preheating section correspond on the drying grate inwall on the downside of grate.
Preferably, the pressure gauge of the rotary kiln is separately positioned on kiln hood and kiln tail and the drying grate interface.
Technical scheme provided by the utility model can include the following benefits：
The utility model provides a kind of online pre-control method of pelletizing production technique, and methods described includes：By drying grate and return
Rotary kiln is respectively divided into some sections, obtains the temperature and pressure of each section of the drying grate and rotary kiln, wherein, the drying grate is each
The pressure of section includes each section of petticoat pipe pressure and air port pressure；Calculate respectively drying grate and adjacent two sections of rotary kiln the temperature difference and
Each section of pressure difference of drying grate and rotary kiln pressure difference, wherein, described each section of pressure difference of drying grate is the petticoat pipe pressure and wind of each section of drying grate
The difference of mouth pressure, the rotary kiln pressure difference are the difference of the rotary kiln end and the pressure of kiln tail；Obtain all temperature difference and pressure difference
Logic judgment value corresponding to respectively；According to all logic judgment values, findings data is calculated, wherein, the findings data is for A and in advance
If the sum of products of the product and B of temperature difference weight and preset pressure weight, A is the logic judgment value sum of all temperature difference, and B is
The logic judgment value sum of all pressure differences；According to the findings data and all logic judgment values, adjustment pelletizing production work is prompted
Skill or cleaning ring formation.The online pre-control method of pelletizing production ring formation of rotary kiln that the utility model embodiment provides, by surveying online
The temperature and pressure of drying grate and each section of rotary kiln are measured, the temperature difference and drying grate for calculating drying grate and adjacent two sections of rotary kiln are each
Section pressure difference and rotary kiln pressure difference, according to logic of propositions judgment rule, calculating logic judgment value, and then calculate findings data, root
According to findings data, quick, accurate judgement ring formation of rotary kiln state and trend, and then adjustment pelletizing production technique prevents ring formation, when
During ring formation, ring formation is cleared up.This convenience can quick and precisely judge ring formation of rotary kiln state and trend, prevent in advance
It ring formation, can be handled when there is slight ring formation, take off block processing without stopping production, fundamentally solve ring formation of rotary kiln pre-control and ask
Topic, then meet grate-kiln pelletizing production Effec-tive Function demand.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
The utility model can be limited.
Brief description of the drawings
In order to illustrate more clearly of the technical solution of the utility model, below by the required accompanying drawing used in embodiment
It is briefly described, it should be apparent that, for those of ordinary skills, do not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation for grate kiln process equipment that prior art provides；
Fig. 2 is a kind of flow chart for online pre-control method of pelletizing production technique that the utility model embodiment provides；
Fig. 3 is a kind of thermometric, the pressure testing method flow chart that the utility model embodiment provides；
Fig. 4 is a kind of method flow diagram for acquisition logic judgment value that the utility model embodiment provides；
Fig. 5 is that a kind of plan structure for pelletizing production technique pre- prosecutor device online that the utility model embodiment provides is shown
It is intended to；
Fig. 6 is a kind of drying grate internal cross section structural representation that the utility model embodiment provides.
Embodiment
By taking the grate kiln of 600,000 tons of Laigang as an example, 600,000 tons of chain grate-rotary kilns are constructed and put into operation in June, 2009,
Production capacity is produces 600000 tons of pellets per year, and design feature is applied to magnetic iron ore and bloodstone, based on bloodstone.Produce pelletizing
Enter factory storage fine powder warehouse and stock ground (pouring into fine powder warehouse) with Iron concentrate, match somebody with somebody in use, being loaded by driving grab bucket from fine powder storehouse
Expect ore storage bin；Bentonite is with tank car Geldart-D particle to bentonite storehouse.By rational proportion, using automatic weight dispensing.Batch passes through
Drying mixes, then by moistening levigate mill after, pelletizing room blending bunker is transported to by rubber conveyer, it is raw by disc balling machine pelletizing
Ball warp yaw belt, big ball roll screen, the screening of bead roll screen；Underproof green-ball is sifted out, and returns to pelletizing；Qualified green-ball is equal
On even cloth to chain grate machine, after drying, preheating, enter through shoveling flitch, slipping hopper in rotary kiln, ring is discharged into after oxidized roasting
Cold is cooled down, and finished product screen screening is delivered to through sealing-tape machine after cooling, and the screenings less than 5mm is transported to as pellet screening by automobile
Stock ground is sintered, finished ball is transported to finished bin by belt and used for blast furnace.Further illustrate below in conjunction with the accompanying drawings of the present utility model
Embodiment.
The utility model embodiment provides a kind of online pre-control method of pelletizing production technique, as shown in Fig. 2 methods described bag
Include：
Step S100：Drying grate and rotary kiln are respectively divided into some sections, obtain each section of the drying grate and rotary kiln
Temperature and pressure.
In the utility model embodiment, the pressure of each section of the drying grate includes each section of petticoat pipe pressure and air port pressure
By force.
In a kind of possible embodiment, as shown in figure 3, step S100 embodiment includes：
Step S110：The drying grate is divided into the first dryer section, the second dryer section, the first preheating section and the second preheating
Four sections of section, the rotary kiln is divided into kiln tail, kiln and three sections of kiln hood.
In specific implementation process, can along pelletizing process flow direction by the drying grate be divided into the first dryer section,
Second dryer section, the first preheating section and the second preheating section, rotary kiln is divided into kiln tail, kiln and kiln hood, wherein, it is described along ball
Group's technological process direction is from drying grate to rotary kiln direction.
Step S120：First dryer section, the second dryer section, the first preheating section, the second preheating section, kiln are measured respectively
In tail, kiln and the temperature of kiln hood and first dryer section, the second dryer section, the first preheating section, each section of the second preheating section
Petticoat pipe pressure and air port pressure, and the pressure of the kiln tail and kiln hood.
In specific implementation process, first dryer section, the second dryer section, the first preheating section, the second preheating section, kiln
Represented successively with T1, T2, T3, T4, T5, T6, T7 with the temperature of kiln hood in tail, kiln, the first dryer section, the second dryer section,
One preheating section, the petticoat pipe pressure of each section of the second preheating section represents with PY1, PY2, PY3, PY4 successively, the first dryer section, second
Dryer section, the first preheating section, the air port pressure of each section of the second preheating section represents with PF1, PF2, PF3, PF4 successively, kiln tail and
The pressure of kiln hood is represented with PH1 and PH2 respectively.
It is above-mentioned that drying grate is divided into the first dryer section, the second dryer section, the first preheating section, the second preheating section, it will turn round
Kiln is divided into kiln tail, kiln and kiln hood is preferably segmented method, and in specific implementation process, user can be according to actual conditions point
It is other that some sections are divided into drying grate and rotary kiln, it is not specifically limited herein.
Step S200：Drying grate and each section of pressure difference of the temperature difference and drying grate of adjacent two sections of rotary kiln and revolution are calculated respectively
Furnace pressure is poor.
In the utility model embodiment, described each section of pressure difference of drying grate is pressed for the petticoat pipe pressure of each section of drying grate with air port
Strong difference, the rotary kiln pressure difference are the difference of the rotary kiln end and the pressure of kiln tail.
In specific implementation process, when the drying grate is divided into the first dryer section, along pelletizing process flow direction
Two dryer sections, the first preheating section and the second preheating section, rotary kiln is divided into kiln tail, kiln and in the case of kiln hood, drying grate
Two sections adjacent with rotary kiln of the temperature difference includes：Dry temperature difference T1, drying and preheating temperature difference T2, preheating temperature difference T3, kiln tail temperature
Temperature difference T5 and kiln hood temperature difference T6 in poor Δ T4, kiln, wherein, it is T2-T1 to dry temperature difference T1；Drying and preheating temperature difference T2
For T3-T2, preheating temperature difference T3 is T4-T3, and kiln tail temperature difference T4 is T5-T4, and temperature difference T5 is T6-T5 in kiln, the kiln hood temperature difference
For T7-T6；Each section of pressure difference of drying grate and rotary kiln pressure difference include：First dryer section pressure differential deltap P1, the second dryer section pressure differential deltap P2,
First preheating section pressure differential deltap P3, the second preheating section pressure differential deltap P4 and rotary kiln pressure differential deltap P5, wherein, Δ P1=PY1-PF1, Δ P2
=PY2-PF2, Δ P3=PY3-PF3, Δ P4=PY4-PF4, Δ P5=PH1-PH2.
Step S300：Obtain logic judgment value corresponding to all temperature difference and pressure difference difference.
Logic judgment value corresponding to all temperature difference and the pressure difference difference obtained in obtaining step S200.
In a kind of possible embodiment, as shown in figure 4, step S300 embodiment, including：
Step S310：The percentage that all temperature difference exceed corresponding fiducial temperature threshold value respectively is calculated respectively, is calculated respectively
Described each section of pressure difference of drying grate exceeds the percentage of default drying grate threshold pressure differential, and the rotary kiln pressure difference is beyond presetting back
The percentage of rotary kiln threshold pressure differential.
In a kind of possible application scenarios, each section of temperature will control respectively when being such as calcined Magnetite Pellets：First is dry
Dry section (200 DEG C~300 DEG C), the second dryer section (350 DEG C~450 DEG C), the first preheating section (550 DEG C~650 DEG C), the second preheating
(1150~1250 DEG C) and kiln hood (1000~1100 DEG C) in section (850 DEG C~950 DEG C), kiln tail (1000~1100 DEG C), kiln.
It can be 150 DEG C to dry and dry temperature difference threshold Y1 is preset corresponding to temperature difference T1, preset corresponding to drying and preheating temperature difference T2 dry
Dry fiducial temperature threshold value Y2 can be 200 DEG C, and it can be 300 DEG C that preheating temperature difference threshold Y3 is preset corresponding to preheating temperature difference T3,
It can be 150 DEG C that kiln tail temperature difference threshold Y4 is preset corresponding to kiln tail temperature difference T4, preset kiln medium temperature in kiln corresponding to temperature difference T5
Poor threshold value Y5 can be 150 DEG C, and it can be -150 DEG C that kiln hood temperature difference threshold Y6 is preset corresponding to kiln hood temperature difference T6.Default chain is combed
Machine threshold pressure differential Y7 can be -1.5kPa, and it can be -300 kPa to preset rotary kiln threshold pressure differential Y8.
In specific implementation process, it is any that user can set Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8 according to actual conditions
Numerical value, it is not specifically limited herein.
Dry temperature difference T1 is beyond the default percentage B1 for drying temperature difference threshold Y1
The percentage B1 that drying and preheating temperature difference T2 exceeds default drying and preheating temperature difference threshold Y2 is
Preheating temperature difference T3 exceeds the default percentage B3 for preheating temperature difference threshold Y3
The percentage B4 that kiln tail temperature difference T4 exceeds default kiln tail temperature difference threshold Y4 is
Temperature difference T5 temperature difference threshold Y5 percentage B5 in default kiln are in kiln
The percentage B6 that kiln hood temperature difference T6 exceeds default kiln hood temperature difference threshold Y6 is
The percentage B7 that first dryer section pressure difference exceeds default drying grate threshold pressure differential Y7 is
The percentage B8 that second dryer section pressure differential deltap P2 exceeds default drying grate threshold pressure differential Y7 is
The percentage B9 that first preheating section pressure differential deltap P3 exceeds default drying grate threshold pressure differential Y7 is
The percentage B10 that second preheating section pressure differential deltap P4 exceeds default drying grate threshold pressure differential Y7 is
The percentage B11 that rotary kiln pressure differential deltap P5 exceeds default rotary kiln threshold pressure differential Y8 is
Step S320：According to preset percentage judgment rule and all percentages, all temperature difference and pressure difference are obtained
The logic judgment value corresponding to respectively.
It is described according to preset percentage judgment rule and the percentage in a kind of possible embodiment, obtain
The logic judgment value, including：
Step S321：If the percentage in the first preset percentage scope, the temperature difference corresponding to the percentage or
The logic judgment value of pressure difference is 0.
In specific implementation process, first preset percentage may range from 0, when above-mentioned B1, B2, B3, B4, B5,
When percentage is 0 in B6, B7, B8, B9, B10, B11, the logic judgment value of its corresponding temperature difference or pressure difference is 0.
Step S322：If the percentage in the second preset percentage scope, the temperature difference corresponding to the percentage or
The logic judgment value of pressure difference is 1.
In specific implementation process, the second preset percentage may range from (0,5%], as above-mentioned B1 into B11 percentage
Than may range from the second preset percentage (0,5%] when, the logic judgment value of its corresponding temperature difference or pressure difference is 1.
Step S323：If the percentage in the 3rd preset percentage scope, the temperature difference corresponding to the percentage or
The logic judgment value of pressure difference is 5.
In specific implementation process, the 3rd preset percentage may range from (5%, 10%], when above-mentioned B1 is into B11 hundred
Point than may range from the 3rd preset percentage (5%, 10%] when, the logic judgment value of its corresponding temperature difference or pressure difference is 5.
Step S324：If the percentage in the 4th preset percentage scope, the temperature difference corresponding to the percentage or
The logic judgment value of pressure difference is 9.
In specific implementation process, the 4th preset percentage may range from (10%, 30%], when above-mentioned B1 is into B11
Percentage may range from the 4th preset percentage (10%, 30%] when, the logic judgment value of its corresponding temperature difference or pressure difference
For 9.
Step S325：If the percentage in the 5th preset percentage scope, the temperature difference corresponding to the percentage or
The logic judgment value of pressure difference is 50.
In specific implementation process, the 5th preset percentage may range from [130%, ∞), when above-mentioned B1 is into B11 hundred
Point than may range from the 5th preset percentage [130%, ∞) when, the logic judgment value of its corresponding temperature difference or pressure difference is
50。
Certainly, in specific implementation process, above-mentioned first preset percentage scope, the second preset percentage scope, the 3rd
Preset percentage scope, the 4th preset percentage scope and the 5th preset percentage scope are preference data scope, Yong Huke
The first preset percentage scope, the second preset percentage scope, the 3rd preset percentage scope, the 4th are set according to actual conditions
Preset percentage scope and the 5th preset percentage scope are any range, are not specifically limited herein.
Step S400：According to all logic judgment values, findings data is calculated.
In the utility model embodiment, the findings data is A and fiducial temperature weight product and B and default pressure
The sum of products of poor weight, A are the logic judgment value sum of all temperature difference, and B is the logic judgment value sum of all pressure differences.
In specific implementation process, when the drying grate is divided into the first dryer section, along pelletizing process flow direction
Two dryer sections, the first preheating section and the second preheating section, rotary kiln is divided into kiln tail, kiln and during kiln hood, findings data A
× W1+B × W2, wherein, A=L1+L2+L3+L4+L5+L6, B=L7+L8+L9+L10+L11, W1 is fiducial temperature weight, W2
For preset pressure weight, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10 and L11 respectively are dry temperature difference T1, done
Temperature difference T5, kiln hood temperature difference T6, the first dryer section in dry preheating temperature difference T2, preheating temperature difference T3, kiln tail temperature difference T4, kiln
Pressure differential deltap P1, the second dryer section pressure differential deltap P2, the first preheating section pressure differential deltap P3, the second preheating section pressure differential deltap P4 and rotary kiln pressure difference
Logic judgment value corresponding to Δ P5.
In a kind of application scenarios, when being calcined Magnetite Pellets, fiducial temperature weight can be 3, preset pressure weight
Can be 5；When being calcined hematite pellets, fiducial temperature weight can be that 4, preset pressure weight can be 6.Certainly, having
In body implementation process, fiducial temperature weight can be that 3, preset pressure weight can be 5 default temperature when being roasting Magnetite Pellets
The preference data of poor weight and preset pressure weight, fiducial temperature weight can be 4, preset pressure weight can be 6 be roasting
The preference data of fiducial temperature weight and preset pressure weight during hematite pellets, user can set default according to actual conditions
Temperature difference weight and preset pressure weight are arbitrary data, are not specifically limited herein.
Step S500：According to the findings data and all logic judgment values, adjustment pelletizing production technique or cleaning are prompted
Ring formation.
In a kind of possible embodiment, step S500 embodiment, including：
Step S510：The logic judgment maximum of drying grate and the logic judgment maximum of rotary kiln are obtained respectively.
In specific implementation process, the logic judgment value of all temperature difference of contrast drying grate and pressure difference, patrolling for drying grate is obtained
Collect and judge maximum；All temperature difference of rotary kiln and the logic judgment value of pressure difference are contrasted, obtains the logic judgment maximum of rotary kiln.
Step S520：If the findings data is zero, prompt technique normal.
In specific implementation process, if the findings data that step S400 is calculated is zero, industrial computer prompting technique is normal.
Step S530：If the findings data in default minimum deviation range, determines the logic judgment of the drying grate
Higher value in maximum and the logic judgment maximum of rotary kiln.
In specific implementation process, preset minimum deviation range can be (0,10], when findings data (0,10] when, it is right
Than the logic judgment maximum of drying grate and the logic judgment maximum of rotary kiln, the higher value in both is obtained.
Step S540：If the higher value is the logic judgment maximum of the drying grate, raising green-ball is prompted to fall by force.
If the higher value obtained in step S530 is the logic judgment maximum of the drying grate, drying grate section ginseng is identified as
Number is abnormal, then prompting raising green-ball falls by force, prevents that the reason such as green pellet cracking causes powder in rotary kiln inwall heap in roasting process
Product forms ring formation.
In specific implementation process, all green-ball raw materials are mixed in blending bunker, and circle is fed by belt feeder batcher
Disk pelletizer, pelletizer rotation, compound are rolled in disk through balling-up of dripping, regulation amount of water, regulation discharge quantity, increase swelling
Soil can improve green-ball with dosage and fall by force.
Step S550：If the higher value is the logic judgment maximum of the rotary kiln, cloth material reducing is prompted to improve
Fall strong.
If the higher value obtained in step S530 is the logic judgment maximum of the rotary kiln, rotary kiln parameter is identified as
Abnormal, then prompting prompting cloth material reducing improves strong, i.e., improves by way of cloth material reducing strong.In specific implementation process
In, cloth material reducing measure includes reducing amount of water, discharge quantity, reduces disc balling machine and opens number.
Step S560：If the findings data, compared with little deviation scope, is prompted to pull flame circle and cloth clearly to subtract default
Material raising falls by force.
In specific implementation process, it is default may range from compared with little deviation (10,50], when findings data (10,50] when,
It is abnormal to be identified as grate kiln end parameter, prompts to pull clear enclose of flame to improve strong, i.e. one side drawing with cloth material reducing
Dynamic scafing ring formation of rotary kiln, green-ball is on the other hand improved by cloth material reducing and fallen by force, prevents green-ball in follow-up roasting process
The reasons such as explosion cause powder to accumulate to form ring formation in rotary kiln inwall.
Step S570：If the findings data, in default relatively large deviation scope, prompting pulls flame strength to enclose and subtract clearly
Wind material reducing improves strong.
In specific implementation process, default relatively large deviation may range from (50,100], when findings data (50,100]
When, it is abnormal to be identified as grate kiln end parameter, prompt to pull the clear circle of flame strength and checking material reducing improve it is strong, i.e.,
On the one hand pull flame strength to remove rotary kiln inwall ring formation, green-ball is on the other hand improved by way of checking material reducing and is fallen by force.
In the utility model embodiment, the clear circle of flame strength is pulled its flame point is come and gone at ring formation position to pull mobile burner
Pull, ring formation is colded and heat succeed each other interaction, and then ftracture and come off, reach the purpose strongly enclosed clearly.
Step S580：If the findings data is stopped material and drawn in default very big deviation range, progress alarm and prompting blowing-out
The clear circle of flame strength of getting angry.
In specific implementation process, very big deviation range (100, ∞) is preset, when findings data is in default very big deviation model
Enclose, then carry out alarm and prompting blowing-out stops material and pulls the clear circle of flame strength.
The online pre-control method of pelletizing production ring formation of rotary kiln that the utility model embodiment provides, including：By drying grate and
Rotary kiln is respectively divided into some sections, obtains the temperature and pressure of each section of the drying grate and rotary kiln, wherein, the drying grate
Each section of pressure includes each section of petticoat pipe pressure and air port pressure；Calculate respectively the temperature difference of drying grate and adjacent two sections of rotary kiln with
And each section of pressure difference of drying grate and rotary kiln pressure difference, wherein, described each section of pressure difference of drying grate for each section of drying grate petticoat pipe pressure with
The difference of air port pressure, the rotary kiln pressure difference are the difference of the rotary kiln end and the pressure of kiln tail；Obtain all temperature difference and pressure
The not corresponding logic judgment value of difference；According to all logic judgment values, calculate findings data, wherein, the findings data be A with
The product and B of fiducial temperature weight and the sum of products of preset pressure weight, A are the logic judgment value sum of all temperature difference, B
For the logic judgment value sum of all pressure differences；According to the findings data and all logic judgment values, adjustment pelletizing production is prompted
Technique or cleaning ring formation.By the temperature and pressure of each section of on-line measurement drying grate and rotary kiln, drying grate and rotary kiln are calculated
Adjacent two sections each section of pressure difference of the temperature difference and drying grate and rotary kiln pressure difference, according to logic of propositions judgment rule, calculating logic is sentenced
Disconnected value, by reasonable weight COMPREHENSIVE CALCULATING, and then calculates findings data, according to findings data, quick, accurate judgement rotary kiln
Ring formation state and trend, reasonable Pre-control measures are proposed, and then prevent ring formation, when judging ring formation, ring formation carried out clear
Reason.This convenience can quick and precisely judge ring formation of rotary kiln state and trend, prevent ring formation in advance, can enter when there is slight ring formation
Row processing, block processing is taken off without stopping production, reply processing in time eliminates revolution formation rings in a kiln, fundamentally solves ring formation of rotary kiln
Pre-control problem, then meet grate-kiln pelletizing production Effec-tive Function demand.
Based on identical technical scheme, the utility model embodiment also provides a kind of pelletizing production technique online pre-control dress
Put, such as Fig. 5 and Fig. 6, described device includes：Industrial computer 9, some temperature measuring equipments, pressure gauge and respectively with the temperature measuring equipment,
The PCL systems 8 of pressure gauge electrical connection, the PLC system electrically connect with industrial computer 9, wherein,
The temperature measuring equipment is separately positioned on drying grate 01, divided in advance along pelletizing process flow direction inside rotary kiln 02
Some sections in.In a kind of application scenarios, along pelletizing process flow direction, by drying grate 01 be divided into the first dryer section 1,
Second dryer section 2, the first preheating section 3 and the second preheating section 4, rotary kiln 02 is divided into kiln tail 5, kiln 6 and kiln hood 7.
In the first possible embodiment, the first dryer section 1, the second dryer section 2, the first preheating section 3 and the second preheating
First temperature measuring equipment 11, the second temperature measuring equipment the 21, the 3rd are set respectively on the inwall of drying grate 01 of the corresponding upside of grate 011 of section 4
The temperature measuring equipment 41 of temperature measuring equipment 31 and the 4th, wherein, the first temperature measuring equipment 11, the second temperature measuring equipment 21, the 3rd temperature measuring equipment 31
It is respectively used to measure the first dryer section 1, the second dryer section 2, the first preheating section 3 and the second preheating section 4 with the 4th temperature measuring equipment 41
Petticoat pipe temperature.
In kiln tail 5, kiln 6 and kiln hood 7 corresponding to set on the inwall of rotary kiln 02 the 5th temperature measuring equipment the 51, the 6th to survey respectively
The warm temperature measuring equipment 71 of device 61 and the 7th, the 5th temperature measuring equipment 51, the 6th temperature measuring equipment 61 and the 7th temperature measuring equipment 71 are surveyed respectively
Measure kiln tail 5,6 and the temperature of kiln hood 7 in kiln.
In second of possible embodiment, the first temperature measuring equipment 11, the second temperature measuring equipment 21, the 3rd temperature measuring equipment 31
The first dryer section 1, the second dryer section 2, the first preheating section 3 and the second preheating section can be separately positioned on the 4th temperature measuring equipment 41
On the inwall of drying grate 01 of the 4 corresponding downsides of grate 011, for being respectively used to measure the first dryer section 1, the second dryer section 2, first
The box temperature of the preheating section 4 of preheating section 3 and second.
In the utility model embodiment, all temperature measuring equipments include thermocouple temperature measurer, and all thermocouple temperature measurers will be surveyed
The temperature of amount is sent to industrial computer 9 by PLC system 8, and industrial computer 9 analyzes and processes to the data of acquisition.
The upside of grate 011 corresponding to drying grate 01 divide in advance along pelletizing process flow direction some sections, and it is described
The downside of grate 011 corresponding to drying grate divide in advance along pelletizing process flow direction some sections, and the rotary kiln 02
Kiln hood 7 and kiln tail 5 respectively set a pressure gauge.
In specific implementation process, drying grate 01 is divided into the first dryer section 1, in advance along pelletizing process flow direction
When two dryer sections 2, the first preheating section 3 and the second preheating section 4, corresponding to the first dryer section 1 on the upside drying grate inwall of grate 011
First pressure meter 12 is set, second pressure meter 13 is set corresponding to first dryer section 1 on the downside side drying grate inwall of grate 011,
First pressure meter 12 is used for the petticoat pipe pressure for measuring the first dryer section 1, and second pressure meter 13 is used for the wind for measuring the first dryer section 1
Mouth pressure；The 3rd pressure gauge 22 of setting, the second dryer section 2 are right on the upside drying grate inwall of grate 011 corresponding to second dryer section 2
4th pressure gauge 23 is set on the downside side drying grate inwall of grate 011 answered, and the 3rd pressure gauge 22 is used to measure the second dryer section 2
Petticoat pipe pressure, the 4th pressure gauge 23 be used for measure the second dryer section 2 air port pressure；Grate 011 corresponding to first preheating section 3
5th pressure gauge 32 is set on the drying grate inwall of upside, set corresponding to the first preheating section 3 on the downside side drying grate inwall of grate 011
The 6th pressure gauge 33 is put, the 5th pressure gauge 32 is used for the petticoat pipe pressure for measuring the first preheating section 3, and the 6th pressure gauge 33 is used to measure
The air port pressure of first preheating section 3；7th pressure gauge is set corresponding to the second preheating section 4 on the upside drying grate inwall of grate 011
42, the 8th pressure gauge 43 is set corresponding to second preheating section 4 on the downside side drying grate inwall of grate 011, and the 7th pressure gauge 42 is used
In the petticoat pipe pressure for measuring the second preheating section 4, the 8th pressure gauge 43 is used for the air port pressure for measuring the second preheating section 4.
In specific implementation process, the pressure gauge of the rotary kiln 02 is separately positioned on kiln hood 7 and kiln tail 5 and the chain
Corresponding to the interface of comb machine 01 on the inwall of rotary kiln 02.
The pressure of all manometries is also sent to industrial computer 9 by PLC system 8.Industrial computer 9 receives institute online
After having temperature data and pressure data, all data are analyzed and processed, obtain findings data, and propose according to findings data
Technique adjustment is prompted, and suggestion content is shown to staff by PLC system.
The online pre-control device of a kind of pelletizing production technique that the utility model embodiment provides, including industrial computer, some surveys
Warm device, pressure gauge and the PLC system electrically connected respectively with the temperature measuring equipment, pressure gauge, wherein, the PLC system with
Industry control mechatronics；The temperature measuring equipment is separately positioned on drying grate, drawn in advance along pelletizing process flow direction inside rotary kiln
In some sections divided；The pressure gauge is separately positioned on some sections that the drying grate divides in advance along pelletizing process flow direction
On the upside of corresponding grate, and under grate corresponding to the drying grate divide in advance along pelletizing process flow direction some sections
Side, and the kiln hood and kiln tail of the rotary kiln.The online pre-control device of pelletizing production technique that the utility model embodiment provides,
The temperature measuring equipment and pressure gauge for being arranged on drying grate and each section of rotary kiln send out the temperature of on-line monitoring and pressure by PLC system
Industrial computer is given, industrial computer carries out calculating drying grate and each section of pressure difference of the temperature difference and drying grate of adjacent two sections of rotary kiln and revolution
Furnace pressure is poor, by analysis, quick, accurate judgement ring formation of rotary kiln state and trend, proposes reasonable Pre-control measures, fundamentally solves
Determine ring formation of rotary kiln pre-control problem, then met grate-kiln pelletizing production Effec-tive Function demand.
In this specification between each embodiment identical similar part mutually referring to.Especially for pelletizing production
For the online pre-control device embodiment of technique, because it is substantially similar to embodiment of the method, so description is fairly simple, it is related
Part is referring to the explanation in embodiment of the method.
Those skilled in the art will readily occur to this practicality after considering specification and putting into practice the disclosure of utility model here
New other embodiments.The application is intended to any modification, purposes or adaptations of the present utility model, these
Modification, purposes or adaptations follow general principle of the present utility model and including undocumented skills of the utility model
Common knowledge or conventional techniques in art field.Description and embodiments be considered only as it is exemplary, it is of the present utility model
True scope and spirit are pointed out by following claim.
Above-described the utility model embodiment does not form the restriction to scope of protection of the utility model.
Claims (4)
1. a kind of online pre-control device of pelletizing production technique, it is characterised in that described device includes：Industrial computer, some thermometrics dress
Put, pressure gauge and the PLC system electrically connected respectively with the temperature measuring equipment, pressure gauge, wherein,
The PLC system and industry control mechatronics；
The temperature measuring equipment be separately positioned on drying grate, some sections divided in advance along pelletizing process flow direction inside rotary kiln
In；
Comb corresponding to the pressure gauge be separately positioned on that the drying grate divides along pelletizing process flow direction in advance some sections
Bed upside, and corresponding to the drying grate divide in advance along pelletizing process flow direction some sections on the downside of grate, Yi Jisuo
State the kiln hood and kiln tail of rotary kiln.
2. device as claimed in claim 1, it is characterised in that the temperature measuring equipment of the drying grate is separately positioned on drying grate edge
The corresponding comb of the first dryer section, the second dryer section, the first preheating section and the second preheating section that pelletizing process flow direction divides in advance
On the drying grate inwall of bed upside.
3. device as claimed in claim 1, it is characterised in that the temperature measuring equipment of the drying grate is separately positioned on drying grate edge
The corresponding comb of the first dryer section, the second dryer section, the first preheating section and the second preheating section that pelletizing process flow direction divides in advance
On the drying grate inwall of bed downside.
4. device as claimed in claim 1, it is characterised in that the pressure gauge of the rotary kiln is separately positioned on kiln hood and kiln
Tail and the drying grate interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720685888.6U CN206828595U (en) | 2017-06-13 | 2017-06-13 | A kind of online pre-control device of pelletizing production technique |
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| CN201720685888.6U CN206828595U (en) | 2017-06-13 | 2017-06-13 | A kind of online pre-control device of pelletizing production technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106987710A (en) * | 2017-06-13 | 2017-07-28 | 山东钢铁股份有限公司 | A kind of online pre-control method of pelletizing production technique and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106987710A (en) * | 2017-06-13 | 2017-07-28 | 山东钢铁股份有限公司 | A kind of online pre-control method of pelletizing production technique and device |
| CN106987710B (en) * | 2017-06-13 | 2018-09-25 | 山东钢铁股份有限公司 | A kind of online pre-control method of pelletizing production technique and device |
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