CN109682220A - It is sintered the air quantity controller of cooling equipment - Google Patents
It is sintered the air quantity controller of cooling equipment Download PDFInfo
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- CN109682220A CN109682220A CN201810014653.3A CN201810014653A CN109682220A CN 109682220 A CN109682220 A CN 109682220A CN 201810014653 A CN201810014653 A CN 201810014653A CN 109682220 A CN109682220 A CN 109682220A
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- ore removal
- node
- temperature
- sinter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0056—Regulation involving cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The present invention relates to the air quantity controller for being sintered cooling equipment, improves the homogenization of ore removal temperature and be sintered the energy-saving effect of cooling equipment.The air quantity controller (4) for being sintered cooling equipment has composition below.Predict that ore removal temperature computation portion (4c) will be divided in tank with the node virtual of same volume, when tank rotates 1 node amount, just real data based on input data calculates the Current Temperatures for being located at the sinter of each node, and it is prediction ore removal temperature the case where being moved to out mine mouth positioned at the sinter of each node that following based on the input data predicted, which is changed with time come calculation assumption,.Evaluation ore removal temperature computation portion (4d) averagely calculates the evaluation ore removal temperature for estimating the air quantity of air supply device (1b) by the prediction ore removal temperature to the sinter for being located at each node.Wind Coverage Calculation portion (4e) calculates to evaluate the air quantity of mine temperature required air supply device consistent with ore removal target temperature.
Description
Technical field
The present invention relates to the air quantity controllers for being sintered cooling equipment.More particularly to it is suitable in the control of sintering process
The air quantity controller of the Boiler pressure control of the tempering air supplied to the cooling equipment for keeping sinter cooling.
Background technique
The sintered production line for including cooling equipment is illustrated referring to Fig.1.Fig. 1 is that the equipment of sintered production line is constituted
Figure.It launches to agglomerating plant 2 by raw material made of coke and iron ore cooperation.Agglomerating plant 2 is by igniter to the raw material
Igniting, and air is sent into aggravate to burn, the sinter 2a after generating sintering solidification.Air Temperature of the thermometer 2c to back segment bellows
Degree is measured.Cooling equipment 1 has: being supplied to and is held by the storage of the sinter 2a of the high temperature after the sintering solidification of agglomerating plant 2
The device 1c and air supply device 1b that tempering air is supplied to the sinter 1a being supplied in tank 1c.The burning supplied
Knot mine 1a goes out mine mouth ore removal after cooled equipment 1 is cooled to desired temperature, from lower part.Ore removal temperature is by thermometer 3a
Measurement.Sinter after ore removal is carried by conveyer belt 3 to upstream devices such as blast furnaces.
The temperature slippage of sinter 1a in cooling equipment 1 is filled by the residence time in tank 1c and from air-supply
The air quantity for setting 1b feeding determines.Residence time in tank 1c is by the height for the sinter being deposited in tank 1c
The rotation speed of (horizontal (level)), tank 1c determine.In addition, the rotation speed of tank 1c is by upstream device
Output determines.On the other hand, air supply device 1b is operated mostly with constant rotational speeds, by changing throttle opening, to adjust
The air quantity being sent into tank.But in recent years in order to cut down the energy consumption of air supply device 1b, not by based on air door
Adjustment, and converter (inverter) is applied, the rotation speed of air supply device 1b is reduced, energy conservation is achieved in.
In the Boiler pressure control of the cooling equipment of such sintered production line, there is also disclosed in following patent documents
Motion.In patent document 1, by the way that the feedback control in the output for going out the thermometer being arranged near mine mouth of cooling equipment is utilized
System, adjusts the rotation speed of air supply device.Also, the agglomerating plant to mine temperature to cooler to mine is indicated based on being utilized
Back segment bellows air themperature and indicate high from the sinter in the tank to the cooling residence time of mine to ore removal
The mathematical model of degree and cooler rotation speed etc. corrects throttle opening, to adjust the air quantity being sent into tank.
But sinter is needing the cooled time close to two hours, the rotation of the air supply device of this period to mine to ore removal
Speed and because air quantity variation caused by throttle opening acts on whole sinters in tank.Therefore, by such as specially
The control method of sharp document 1 is based only upon the measured value on specific opportunity and air quantity adjusted like that, to complete in tank
The sinter in portion not necessarily becomes effective air quantity.
Citation
Patent document
Patent document 1: Japanese Unexamined Patent Publication 11-236629 bulletin
In order to solve such project, it is contemplated that the node in tank with same volume is come virtual grate, and needle
Prediction ore removal temperature is calculated separately to the sinter for being located at each node, is determined using predicting the highest sinter of ore removal temperature as object
The air quantity of air supply device is determined so that ore removal temperature is lower than the method for the ore removal target temperature upper limit.However, in the control method, when
When only a node in tank is mixed with the sinter of high temperature, the entire phase in cooler is stranded in the sinter
Between, the air quantity of air supply device is adjusted much.Therefore, other sinter supercooling, the energy consumption for reducing air supply device are cut down
Effect.Also, due to that can be heated, melt again in the blast furnace of sinter downstream equipment, so leading to overcooled sintering
Energy consumption of the mine in blast furnace also increases.
Which either above-mentioned control method, can not all determine suitable air quantity, that is, for the sintering in tank
Mine integrally controls to keep ore removal temperature when ore removal consistent with target temperature as far as possible and keep the energy consumption of air supply device the smallest
Air quantity.
Summary of the invention
The present invention is proposed to solve project as described above, it is intended that providing one kind can be realized out
The air quantity controller of the homogenization of mine temperature and the cooling equipment of the sintering for improving energy-saving effect.
The air quantity controller for the cooling equipment of sintering that embodiments of the present invention are related in order to achieve the above purpose and
It constitutes as described below.
Be sintered cooling equipment to have: tank has the sintering for being supplied to and obtaining after the agglomerating plant heating by upstream
The mine mouth out of the feed port of mine and device discharge sinter downstream is simultaneously circumferentially rotatable；Air supply device, to tank
Supply tempering air；And ore removal machine, sinter is clawed from above-mentioned mine mouth out along with the rotation of above-mentioned tank.
The air quantity controller for being sintered cooling equipment has input data collection portion, input data variation prediction portion, prediction
Ore removal temperature computation portion, evaluation ore removal temperature computation portion and Wind Coverage Calculation portion.
It includes data related with the sinter in tank and the wind with air supply device that input data collection portion, which is directed to,
The input data of related data is measured, real data is collected." data related with the sinter in tank " for example including
The height of sinter in tank, the cooler rotation speed of tank, the sinter supplied to tank are given
Mine temperature-related-magnitude.To mine temperature-related-magnitude other than the sinter that supplies to tank is to mine temperature, it is also possible to
The value relevant to mine temperature is given such as air themperature of back segment bellows of agglomerating plant.In addition, " related with the air quantity of air supply device
Data " are also possible to drive the motor rotation speed of the driving machine of air supply device other than the air quantity of air supply device.
Following the changing with time of input data variation prediction portion prediction input data.
Predict that ore removal temperature computation portion will be divided in tank with the node virtual of same volume, whenever tank revolves
Turn 1 node amount, just based on the real data being collected by input data collection portion, calculates working as the sinter for being located at each node
Preceding temperature.Also, predict future of the ore removal temperature computation portion based on the input data predicted by input data variation prediction portion
Change with time, come calculation assumption be located at each node sinter be moved to out mine mouth in the case where prediction ore removal temperature
Degree.
Evaluation ore removal temperature computation portion calculates the average of the prediction ore removal temperature based on the sinter for being located at each node and obtains
The evaluation ore removal temperature arrived.
Wind Coverage Calculation portion calculates to evaluate the heat-resisting of mine temperature and the device (such as conveyer belt 3 of Fig. 1) than downstream
The high ore removal target temperature of temperature unanimously required for air supply device air quantity.
In this way, according to the average evaluation ore removal temperature of the prediction ore removal temperature based on each node is calculated, and make to evaluate
Mine temperature and the consistent Boiler pressure control of ore removal target temperature can prevent other big due to the sinter of high temperature node
The case where sinter of most nodes is over cooled.
Optimizing evaluation ore removal temperature computation portion is to assign big to the node of mine mouth side out compared with the node of feed port side
The mode of weight carries out hamming to the prediction ore removal temperature for the sinter for being located at each node, thus carrys out Calculation Estimation ore removal temperature
Degree.
In this way, the air volume meter of the node by reduction feed port side high a possibility that influenced on following operation change
The considerations of calculation, paid the utmost attention to calculating and the air volume meter of the evaluation ore removal temperature of the sinter of the node of mine mouth side out
It calculates, is able to carry out the optimal Wind Coverage Calculation for more meeting practical operation.
Invention effect
According to the air quantity controller of the cooling equipment of the sintering of the present invention constituted as described above, can be realized out
The homogenization of mine temperature and the raising of energy-saving effect.
Detailed description of the invention
Fig. 1 is the equipment composition figure of sintered production line.
Fig. 2 is the concept map of cooling equipment.
Fig. 3 is the figure for being illustrated to the process until the sinter to ore removal being supplied to.
Fig. 4 is the figure for indicating an example of node division for tank.
Fig. 5 is the figure being illustrated for the method to the temperature information for managing the sinter in cooling equipment.
Fig. 6 is the block diagram of air quantity controller.
Fig. 7 is for the figure being illustrated for the temperature model for calculating the total losses heat of each node.
Fig. 8 is the figure being illustrated for the calculating to the node temperature for having used difierence equation.
Fig. 9 is the flow chart for the routine program (routine) that air quantity controller executes.
Figure 10 is the concept map for indicating the hardware configuration example of processing circuit possessed by air quantity controller.
Figure 11 is one of the weight setting for Calculation Estimation ore removal temperature for being related to embodiments of the present invention 2
The figure that a example is illustrated.
The explanation of appended drawing reference
1- cools down equipment；1a- sinter (in tank)；1b- air supply device；1c- tank；1d- ore removal machine；2-
Agglomerating plant；2a- sinter (agglomerating plant)；2c- thermometer；3- conveyer belt；3a- thermometer；4- air quantity controller；4a-
Input data collection portion；4b- input data variation prediction portion；4c- predicts ore removal temperature computation portion；4d- evaluates ore removal thermometer
Calculation portion；4e- Wind Coverage Calculation portion；4f- exports determination section；91- processor；92- memory；93- hardware.
Specific embodiment
Hereinafter, embodiments of the present invention are described in detail referring to attached drawing.Wherein, the element shared in each figure is assigned
Give identical appended drawing reference and the repetitive description thereof will be omitted.
Embodiment 1
(composition of cooling equipment)
The basic composition for the sintered production line in system that embodiments of the present invention 1 are related to is identical as above-mentioned Fig. 1.It is cold
But equipment 1 (being sintered cooling equipment) is to cool down to the sinter for being sintered the high temperature after the sintering of equipment 2 solidifies, and pass out to
Equipment for the conveyer belt 3 that downstream equipment is carried.Referring to Fig. 2, the composition of cooling equipment 1 shown in FIG. 1 is illustrated.
Cooling equipment 1 has air supply device 1b, tank 1c, ore removal machine 1d.
The air-supply that air supply device 1b is arranged via the inside of tank 1c cylindric shown in the longitudinal section view in Fig. 2
Pipe supplies tempering air to tank 1c.Air supply device 1b has driving machine and convertor device, the motor rotation of driving machine
Rotary speed is transformed the control of device device.The tempering air being sent into from air supply device 1b is cooling by the sinter in tank 1c
To the heat resisting temperature of conveyer belt 3 (Fig. 1).
Tank 1c is circumferentially rotatable as shown in the top view of Fig. 2.The upper opening of tank 1c, as being supplied to
The feed port of sinter after being heated by the agglomerating plant 2 of upstream functions.The side lower local openings of tank 1c,
The mine mouth that goes out as device (conveyer belt 3 etc.) discharge sinter downstream functions.
The mine mouth that goes out that ore removal machine 1d is inserted into tank 1c is taken off along with the rotation of tank 1c from mine mouth out
Sinter after cooling out.
In addition, cooling equipment 1 (tank 1c) adjusts yield by adjusting cooler rotation speed, it can be ensured that
In cooler horizontal (height of the sinter in tank 1c).
Next, being illustrated referring to Fig. 3 to the process until the sinter to ore removal being supplied to.Added by agglomerating plant 2
Sinter after heat is put into ((A) of Fig. 3) from the top of tank 1c.The sinter 1a and tank 1c mono- being supplied to
It rises circumferentially moved.In addition, according to the circumferential rotation of tank 1c, the sinter first supplied is successively taken off by ore removal machine 1d
Out, also, sinter 1a to the lower direction of tank 1c slowly moves ((B) of Fig. 3).Moreover, sinter 1a is being reached
When the lower part of tank 1c, the ore removal ((C) of Fig. 3) and being clawed by ore removal machine 1d.
Operationally, lacking, because resting caused by maintenance as long as no material, then sinter is succeedingly supplied, is gone out
Mine.During this period, cooling equipment 1 makes cooler rotation speed from downstream side because of horizontal control in yield limitation or cooler
Degree variation.Therefore, from the non-constant to the time until mine to ore removal of sinter.
In the present embodiment, position, Temperature Distribution and the temperature history record of the sinter in tank 1c are managed
(Cooling History record).The position of sinter and temperature in tank 1c with short transverse according to circumferentially virtually drawing
The node unit of the same volume divided is managed.Using the sinter for being included in each node as sintering ore cluster, burnt to manage
Tie position and the temperature of ore cluster.
Fig. 4 is the figure for indicating an example of node division of tank 1c.With same volume in tank 1c
Node is by virtual grate.In the example in fig. 4, tank 1c is circumferentially divided into 12 divisions, in short transverse quilt
It is divided into n division.Tank 1c is circumferentially rotated 1 node amount (1 division) to be known as moving 1 tracking.
Fig. 5 is the figure that the method being managed for the temperature information to the sinter in cooling equipment 1 is illustrated.?
In Fig. 5, using the appended drawing reference of direction of rotation j and short transverse i, the position of each node is indicated.The position of node refer to from
Position in the case where the external observation of tank 1c, the sinter positioned at node [i] [j] are moved to section after 1 tracking
Point [i] [j+1].For each node [i] [j], calculated Current Temperatures T is recordedp[i] [j] and the sintering for being assumed to the node
The predicted temperature for the case where mine (sintering ore cluster) is moved to out mine mouth predicts ore removal temperature TO[i][j]。
(air quantity controller)
Fig. 6 is the block diagram of air quantity controller.Every movement 1 tracking just executes the input data in air quantity controller 4
Collection portion 4a, input data variation prediction portion 4b, prediction ore removal temperature computation portion 4c, evaluation ore removal temperature computation portion 4d, air quantity
It is managed everywhere in calculation part 4e, output determination section 4f.
It includes data related with the sinter in tank 1c and and air supply device that input data collection portion 4a, which is directed to,
The input data of the related data of the air quantity of 1b collects real data (current value).It is " related with the sinter in tank 1c
Data " height for example including the sinter in tank 1c, the cooler rotation speed of tank 1c, hold to storage
The sinter of device 1c supply gives mine temperature-related-magnitude.To mine temperature-related-magnitude in addition to the sinter that is supplied to tank 1c
Other than mine temperature, be also possible to air themperature of back segment bellows of agglomerating plant 2 etc. to give mine temperature relevant value.In addition,
" data related with the air quantity of air supply device " are also possible to drive air supply device 1b's other than the air quantity of air supply device 1b
The motor rotation speed of driving machine.Collected real data is whenever 1 tracking of tank 1c advance just will be during this period
Sample the value of obtained value equalization.
Input data variation prediction portion 4b is above-mentioned to predict based on the real data being collected by input data collection portion 4a
The following of input data change with time.Specifically, the whole sintering currently put aside in prediction tank 1c
The variation of input data until mine to ore removal.For example, there is a kind of current value by being assumed to respective real data that can prolong
The method for continuing to be predicted.In addition, (being omitted by using the operating conditions of the agglomerating plant 2 (Fig. 1) of upstream, upstream device
Diagram) the data of operating conditions be modified, can be improved the precision of prediction of the variation until ore removal.
Predict ore removal temperature computation portion 4c based on the process (process) predicted by input data variation prediction portion 4b
Variation prediction, to calculate the prediction ore removal temperature of whole sinters in tank 1c.
Predict that ore removal temperature computation portion 4c will be divided in tank 1c with the node virtual of same volume, whenever storage holds
When device 1c rotates 1 node amount, just based on the real data being collected by input data collection portion 4a, calculates and be located at each node
The Current Temperatures of sinter.Also, predict ore removal temperature computation portion 4c based on being predicted by input data variation prediction portion 4b
The following of input data is changed with time, and calculation assumption is the case where being moved to out mine mouth positioned at the sinter of each node
Predict ore removal temperature.
Specifically, prediction ore removal temperature computation portion 4c use is drawn in view of because of heat loss caused by cross-ventilation, because of watering
The heat loss risen, the aftermentioned temperature determined by radiation-induced heat loss and the heat loss caused by heat transfer between node
Model is spent, to calculate the Current Temperatures (mean temperature in node) of each node.In addition, using the temperature model, calculating is located at
Temperature change until the sinter to ore removal of each node.
< temperature model >
Next, to temperature used in the above-mentioned temperature computation for predicting the node unit in ore removal temperature computation portion 4c
Model is illustrated.Fig. 7 is for the figure being illustrated for the temperature model for calculating the total losses heat of each node.Unit
The summation Σ Q of the hot-fluid of node is indicated by following formula (1).
[numerical expression 1]
∑ Q=Qair+Qwater+Qrad+Qcon (1)
Wherein,
Qair: because of hot-fluid caused by the convection current to air
Qwater: because of hot-fluid caused by the convection current to cooling water
Qrad: because of radiation-induced hot-fluid
Qcon: because of hot-fluid caused by the heat transfer between node
In formula (1), because of hot-fluid Q caused by the convection current to airairIt is indicated by following formula (2).
[numerical expression 2]
Qair=ha·Ssinter·(Tnode-Tair) (2)
Wherein,
ha: the cooling heat transfer coefficient of air
Ssinter: agglomerate surface product
Tnode: node temperature
Tair: atmospheric temperature
In formula (2), the cooling heat transfer coefficient h of airaIt is indicated by following formula (3).
[numerical expression 3]
ha=Nu λ/D (3)
Wherein,
Nu=2+0.6Re0.5·Pr0.333
Re=ρ vD/ μ
Pr=Cp μ/λ
λ: pyroconductivity (air)
D: the diameter of sinter
ρ: density (air)
μ: viscosity (air)
Cp: specific heat (air)
V: wind speed
V=W/Sd
W: air quantity
Sd: mouth blown sectional area
In formula (1), because of hot-fluid Q caused by the convection current to cooling waterwaterIt is indicated by following formula (4).
[numerical expression 4]
Wherein,
Cvw: heat of evaporation
ρw: the quality (every 1mol) of water
Cpw: the specific heat of water
Tw: the temperature of water
Flw: watering amount
In formula (1), because of radiation-induced hot-fluid QradIt is indicated by following formula (5).
[numerical expression 5]
Qrad=ε σ Srad·(Tnode 4-Tair 4) (5)
Wherein,
ε: radiance
σ: Stefan boltzmann's coefficients
Srad: swept area
Tnode: node temperature
Tair: atmospheric temperature
In formula (5), swept area SradIt is indicated by following formula (6).
[numerical expression 6]
Srad=2 π nh·(Lin+Lout) (6)
Wherein,
nh: height of node
Lin: rotary inside diameter radius
Lout: rotation outer diameter radius
In formula (1), because of hot-fluid Q caused by the heat transfer between nodeconIt is indicated by following formula (7).
[numerical expression 7]
Wherein,
K: pyroconductivity
Si→i-1: surface area between node
Ti,Ti-1: sinter temperature
D: euclidean distance between node pair
Aftermentioned formula (9) will be substituted by the total losses heat Σ Q for each node that formula (1) indicates, the node temperature at each node
Degree is indicated as difierence equation (8).
[numerical expression 8]
Tpj=Tpj-1-ΔTpj-1 (8)
Wherein,
Tpj: node temperature
P: the grid numbering of short transverse
J: the grid numbering of direction of rotation
ΔTpj: the temperature of reduction during 1/12 rotation the time it takes Δ t
In formula (8), the temperature Δ T of reduction during 1/12 rotation the time it takes Δ tpjIt is indicated by following formula (9).
[numerical expression 9]
Wherein,
ρ: sintering mineral density
C: specific heat
V: the volume of node
Fig. 8 is the figure being illustrated for the calculating to the node temperature for having used difierence equation (8).It is shown in Fig. 8
Example in, the grid numbering of direction of rotation is from adding 1 (after Δ t second) after 1/12 rotation, and node temperature is from T31Variation is T32。
Node temperature T32According to difierence equation (8) by T32=T31Δ T31It indicates.Predict that ore removal temperature computation portion 4c is pressed as tracking
Every 1/12 rotation on opportunity, calculates the Current Temperatures for being located at the sinter of each node.Also, predict ore removal temperature computation portion 4c meter
The sinter that calculation is located at each node is moved to out prediction ore removal temperature when mine mouth.
It is continued to explain back to Fig. 6.Evaluate prediction of the ore removal temperature computation portion 4d based on the sinter for being located at each node
The average computation of ore removal temperature evaluates ore removal temperature (formula (10)).Evaluating ore removal temperature is for determining that air supply device 1b's is suitable
Air quantity index.
[numerical expression 10]
Wherein,
EvXT: evaluation ore removal temperature
XT [j] [i]: positioned at circumferencial direction divides j, short transverse divides the prediction ore removal temperature of the sinter in the node of i
Degree
NK: short transverse divides number
NP: circumferencial direction divides number
NZ: there is no the number of nodes of the sinter of computing object
Wind Coverage Calculation portion 4e calculates to evaluate the resistance to of mine temperature and the device (such as conveyer belt 3 of Fig. 1) than downstream
The high ore removal target temperature of hot temperature unanimously required for air supply device 1b air quantity.Wind Coverage Calculation portion 4e calculates to make to evaluate
Ore removal temperature and the difference of ore removal target temperature are air quantity required for 0.Also have altered air quantity condition, to calculate prediction ore removal repeatedly
Method of the temperature (and evaluation ore removal temperature) until discovery evaluation ore removal temperature and the consistent air quantity of ore removal target temperature,
But by seeking influence coefficient of the evaluation ore removal temperature relative to air quantity variable quantity as described below, can be avoided it is huge repeatedly
Temperature computation.
Fig. 9 is the flow chart for the routine program that air quantity controller 4 executes.This routine program is executed by every 1 tracking.?
In step 5a, the air quantity condition of prediction ore removal temperature of the 4e setting in Wind Coverage Calculation portion for calculating each node.It is calculated in first time
Different air quantity is set in second of calculating.It is set for the first time by current air volume (the now air quantity of the air supply device 1b in tracking)
The air quantity condition slightly reduced sets current air volume in second of calculating.
Then, in step 5b, prediction ore removal temperature computation portion 4c calculates the prediction ore removal temperature of each node, evaluates ore removal
Temperature computation portion 4d evaluates ore removal temperature according to the prediction ore removal temperature computation of all nodes using formula (10).
If terminated for the first time with second of calculating, the processing of 5d is set up and entered step to the condition of step 5c.
In step 5d, Wind Coverage Calculation portion 4e carrys out Calculation Estimation ore removal temperature relative to air quantity variable quantity using following formula (11)
Influence coefficient.
[numerical expression 11]
Wherein,
θ XY/ θ W: coefficient is influenced
EvXT (1): the evaluation ore removal temperature calculated for the first time
EvXT (2): the second evaluation ore removal temperature calculated
Next, Wind Coverage Calculation portion 4e uses following formula (12), according to calculated with current air volume condition in step 5e
The second assessment ore removal temperature and target ore removal temperature difference and influence coefficient, calculate air quantity variable quantity.
[numerical expression 12]
Wherein,
Δ W: air quantity variable quantity
Ore removal target temperature
The sum of current air quantity and air quantity variable quantity are calculated by Wind Coverage Calculation portion 4e is used as necessary air quantity.
The output determination section 4f of Fig. 6 determines to realize by Wind Coverage Calculation portion 4e calculated air quantity (current air quantity and air quantity
The sum of variable quantity) air supply device 1b motor rotation speed.Air supply device 1b is controlled based on determining.
(effect)
As described above, the air quantity controller 4 being related to according to the present embodiment, can be in tank 1c
Sinter integrally by ore removal when the control of ore removal temperature at consistent with ore removal target temperature as far as possible, also, realize energy consumption most
Smallization.
(variation)
However, tank 1c circumferentially to have been carried out to 12 divisions, but not limited to this, as long as more in Fig. 4
A division.In addition, the point is also the same in the following embodiments.
In addition, the type of cooling of the cooler in the system of above-mentioned embodiment is from air supply device 1b to tank
What 1c was blown into tempering air is blown into formula, and but not limited to this.The type of cooling of cooler is also possible to from tank 1c
The introducing-type of cooling used air is imported to air supply device 1b.In addition, the point is also the same in the following embodiments.
In addition, in the system of above-mentioned embodiment, used include because of watering caused by heat loss temperature model,
In the case where the water filling carried out not over Water spray nozzle, the temperature of heat loss caused by eliminating because of watering also can be used
Model.In addition, the point is also the same in the following embodiments.
(hardware configuration example)
Figure 10 is the concept map for indicating the hardware configuration example of processing circuit possessed by above-mentioned air quantity controller 4.Fig. 6
Air quantity controller 4 in each portion indicate a part of function, each function realized by processing circuit.As a mode, place
Reason circuit at least has a processor 91 and at least one processor 92.Alternatively, processing circuit at least has one
A dedicated hardware 93.
In the case where processing circuit has processor 91 and memory 92, each function passes through software, firmware or software
Combination with firmware is realized.At least one party of software and firmware is described as program.At least one party's quilt of software and firmware
It is stored in memory 92.Processor 91 is by reading the program stored in memory 92 and execution, to realize each function.
In the case where processing circuit has dedicated hardware 93, processing circuit is, for example, single circuit, compound circuit, journey
The processor of sequence or by these combine obtained from circuit.Each function is realized by processing circuit.
Embodiment 2
Next, 1 pair of embodiments of the present invention 2 is illustrated referring to Fig.1.In above-mentioned embodiment 1, it will be located at
The prediction ore removal temperature of the sinter of each node averagely calculates evaluating for the air quantity for estimating above-mentioned air supply device merely
Mine temperature.That is, comparably treating each node in Calculation Estimation ore removal temperature.However, if in view of following operation change
Possibility, then it is believed that being located at the precision of the prediction ore removal temperature of the sinter of upper layer node and between the ore removal of lower level node
Close sinter is compared, and precision is lower.On the other hand, since the sinter for being located at lower level node is close between ore removal, so can recognize
It is influenced caused by ore removal temperature greatly for the air quantity of current air supply device 1b.
In consideration of it, the evaluation ore removal temperature computation portion 4d that is related to of embodiment 2 is compared with the node of feed port side to ore removal
The node of mouth side assigns big weight to carry out hamming to the prediction ore removal temperature for the sinter for being located at each node, and calculating is commented
Valence ore removal temperature.
Due to the structure of the cooling equipment 1 other than the calculating of the evaluation ore removal temperature carried out by evaluation ore removal temperature computation portion 4d
At, movement it is identical as embodiment 1, so omitting the description.
Figure 11 be for embodiments of the present invention 2 be related in order to Calculation Estimation ore removal temperature weight setting one
The figure that a example is illustrated.As noted previously, as it is believed that nearer it is to the node of mine mouth out then because of temperature caused by air quantity
The influence changed to ore removal temperature is bigger, so weight setting also increases the node of lower part.
In the example of Figure 11, the weight setting of the node of short transverse is divided into 3 stages, is divided into undermost node
Number is 6 nodes, and the number of nodes of middle layer is 6 nodes more than it and node in addition to this.The power of lowest level node
It resets and is set to 0.7, the weight setting of middle layer node is 0.3, and the weight setting of upper layer node is 0.0.In this way to tank
Each node sets weight in 1c carrys out Calculation Estimation ore removal temperature using following formula (13).
[numerical expression 13]
Wherein,
EvXT: evaluation ore removal temperature
XT [j] [i]: in circumferencial direction divides j, short transverse divides the prediction ore removal temperature of the sinter in the node of i
Degree
The height number of nodes that each weight divides
α1,α2: the setting weight that each weight divides
NP: circumferencial direction divides number
There is no the number of nodes of the sinter of computing object in the division of each weight
The evaluation ore removal temperature computation portion 4d that embodiment 2 is related to replaces above-mentioned formula in Calculation Estimation ore removal temperature
(1) formula (13) are used.Also, Wind Coverage Calculation portion 4e will be by the calculated evaluation ore removal temperature applications of formula (13) in formula
(11), formula (12) calculates air quantity variable quantity.
As described above, the air quantity controller 4 being related to according to the present embodiment, by reducing to following operation
The considerations of Wind Coverage Calculation of the high upper layer node of a possibility that variation is influenced, carries out having paid the utmost attention to the node close to mine mouth is gone out
Sinter evaluation ore removal temperature calculating and Wind Coverage Calculation, thus, it is possible to more be met the optimal of practical operation
Wind Coverage Calculation.
More than, embodiments of the present invention are illustrated, but the present invention is not limited to above-mentioned embodiment, energy
It is enough to carry out various modifications in the range for not departing from purport of the invention and implement.
Claims (2)
1. a kind of air quantity controller for being sintered cooling equipment, has:
Tank, with the feed port for being supplied to the sinter obtained after the agglomerating plant heating by upstream and downstream
The mine mouth out of device discharge sinter is simultaneously circumferentially rotatable；Air supply device supplies tempering air to tank；And ore removal
Machine claws sinter from above-mentioned mine mouth out along with the rotation of above-mentioned tank, which is characterized in that
The air quantity controller of the cooling equipment of above-mentioned sintering has:
Input data collection portion, for include data related with the sinter in above-mentioned tank and with above-mentioned air supply device
The related data of air quantity including input data, collect real data；
Input data variation prediction portion predicts that the following of above-mentioned input data is changed with time；
Ore removal temperature computation portion is predicted, with the node of same volume by virtual grate in above-mentioned tank, whenever above-mentioned storage
When container rotates 1 node amount, based on the above-mentioned real data being collected by above-mentioned input data collection portion, calculates and be located at each node
Sinter Current Temperatures, also, not according to the above-mentioned input data predicted by above-mentioned input data variation prediction portion
That comes changes with time, the prediction ore removal temperature in the case where being moved to above-mentioned mine mouth out to the sinter that hypothesis is located at each node
Degree is calculated；
Ore removal temperature computation portion, Calculation Estimation ore removal temperature are evaluated, which is based on the sintering for being located at each node
The prediction ore removal temperature of mine it is average obtained from temperature；And
Wind Coverage Calculation portion calculates for above-mentioned evaluation ore removal temperature required above-mentioned air supply device consistent with ore removal target temperature
Air quantity, the ore removal target temperature is higher than the heat resisting temperature of the device in above-mentioned downstream.
2. the air quantity controller according to claim 1 for being sintered cooling equipment, which is characterized in that
Above-mentioned evaluation ore removal temperature computation portion is to assign the node of above-mentioned mine mouth side out compared with the node of above-mentioned feed port side
The mode of big weight carries out hamming to the prediction ore removal temperature for the sinter for being located at each node, thus calculates upper commentary
Valence ore removal temperature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2017202009A JP6866822B2 (en) | 2017-10-18 | 2017-10-18 | Air volume control device for sintered cooler equipment |
| JP2017-202009 | 2017-10-18 |
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| CN113549778A (en) * | 2021-05-28 | 2021-10-26 | 包头市新达茂稀土有限公司 | Roasted ore cold leaching process for improving rare earth recovery rate |
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| JPH11236629A (en) * | 1998-02-23 | 1999-08-31 | Nippon Steel Corp | Method for controlling blasting quantity of cooler for sintered ore |
| CN103014329A (en) * | 2012-12-27 | 2013-04-03 | 中冶长天国际工程有限责任公司 | Control method of annular cooling air blower |
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| CN113549778A (en) * | 2021-05-28 | 2021-10-26 | 包头市新达茂稀土有限公司 | Roasted ore cold leaching process for improving rare earth recovery rate |
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| CN109682220B (en) | 2020-04-14 |
| JP6866822B2 (en) | 2021-04-28 |
| JP2019073781A (en) | 2019-05-16 |
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