CN109231857A - A kind of limekiln fire coal adaptive regulation method and system - Google Patents
A kind of limekiln fire coal adaptive regulation method and system Download PDFInfo
- Publication number
- CN109231857A CN109231857A CN201811242930.2A CN201811242930A CN109231857A CN 109231857 A CN109231857 A CN 109231857A CN 201811242930 A CN201811242930 A CN 201811242930A CN 109231857 A CN109231857 A CN 109231857A
- Authority
- CN
- China
- Prior art keywords
- branch
- fingers
- pulverized coal
- coal flow
- distributor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/12—Preheating, burning calcining or cooling in shaft or vertical furnaces
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Feeding And Controlling Fuel (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The application discloses a kind of limekiln fire coal adaptive regulation method and system, and the method includes step S1: monitoring the pulverized coal flow of each branch in the pulverized coal flow and distributor of main pipe rail；Step S2: each branch in the distributor is divided into set of fingers A and set of fingers B, and the set of fingers A and the set of fingers B are initialized；Step S3: the maximum value Qmax of each branch pulverized coal flow Qa in dynamic lookup set of fingers A, record maximum value Qmax corresponds to the number k of branch；Step S4: synchronizing the pulverized coal flow Qb for turning down each branch in set of fingers B, so that the pulverized coal flow Qak for the branch that number is k increases, until Qak=Qb；Step S5: the branch for numbering as k is moved in set of fingers B from set of fingers A；Step S6: circulation step S3 to S5, until the pulverized coal flow of all branches is equal in distributor, automatic adjusument process terminates.The application can have found in time and eliminate the problem of coal powder distribation unevenness, realize the accuracy controlling of kiln temperature.
Description
Technical field
This application involves limekiln technical field more particularly to a kind of limekiln fire coal adaptive regulation method and systems.
Background technique
Limekiln be by lime stone in kiln thorax high-temperature calcination to generate the mechanical shaft furnace of industrial quick lime.Limestone calcination
Decomposing and generating the reaction of quick lime and carbon dioxide is the typical endothermic reaction, needs to absorb amount of heat.To guarantee lime stone
Decomposition reaction is gone on smoothly, and generally requires and lime stone is heated to 1100 DEG C in limekiln, if temperature is excessively high, material
Surface layer quick lime can superfuse crystallization, reduce product activation grade；If temperature is too low, material core is decomposed not exclusively, reduces product
Calcium oxide content.Therefore, it during calcined limestone, needs to guarantee each accurate heat supply of position material in kiln, makes each in kiln
Locate material thermally equivalent.
Fig. 1 is the schematic diagram of existing limekiln coal supply system, which includes pulverized coal bin 1, coal powder metering scale 2, total
Pipeline 3, conveying fan 4, distributor 5 and spray gun 8.Pulverized coal particle in pulverized coal bin 1 is fallen after the weight calculation of lower section coal powder metering scale 2
Enter main pipe rail 3, is sent into the distributor 5 in downstream by conveying fan 4 by pneumatic conveying.Along axis for axis symmetry cloth on distributor 5
Several discharge branches 6 are equipped with, the end of each discharge branch 6 is connect with spray gun 8 respectively, between distributor 5 and spray gun 8
Export branch road be equipped with manual modulation valve 7, be uniformly sent into each branch after distributing from the allocated device 5 of coal dust that main pipe rail 3 conveys
Spray gun 8, and limekiln thorax is admitted to by spray gun 8.Fig. 2 is existing limekiln coal powder distribation schematic diagram, detailed process are as follows:
Firstly, final product quality on observation kiln bottom exit face, there are the regions of lime raw burn and lime burning on record exit face respectively；It is logical
After the method projected straight up, the corresponding target spray gun in raw burn region and burning region on burning zone section is found out；Most
Afterwards, it empirically adjusts target spray gun and corresponds to the manual modulation valve in export branch road, tune up the aperture that raw burn region corresponds to valve,
The aperture that burning region corresponds to valve is turned down, to realize the control and regulation to temperature field in limekiln.
However, this coal-fired distribution control method has following defects that first, the prior art pushes away kiln by the way that product quality is counter
Interior heat supply situation, distribution condition of the obtained coal dust between each spray gun have very big uncertainty, while having very tight
The hysteresis quality of weight.For lime stone from heating and calcining to finished product is formed from the discharge of kiln thorax, centre is general to undergo a hour, lime about more than 10
Uneven heating of the stone at burning zone can not reflect at once on finished product lime quality, be easy to appear when there is unusual service condition
Serious product quality problem and energy consumption problem.
Second, belong to from distributor 5 to the corresponding branch of each spray gun 8 and be connected in parallel, when the resistance of a wherein branch road
When changing, the pulverized coal flow of remaining branch spray gun 8 can all change therewith.In this case, by controlling single valve
It is difficult to realize to adjust pulverized coal flow distribution, it is necessary to the mode for taking all branch pipe valve synchronous coordinations to adjust, and existing skill
Art adjusts distribution of the coal dust between each spray gun 8 by manual modulation valve 7, and each operation valve behind the door, can not obtain tune in time
Coal powder distribation situation after section, therefore which valve is adjusted, it is typical open loop control that how much adjust, which all can only by virtue of experience operate,
System, is unable to complete the accurate control to coal powder distribation, not can guarantee kiln thorax even distribution heating.
Summary of the invention
The application provides a kind of limekiln fire coal adaptive regulation method and system, can not accurately be controlled with solving the prior art
The problem of coal dust evenly distributes in limekiln processed.
In a first aspect, the application provides a kind of limekiln fire coal adaptive regulation method, which comprises
Step S1: the pulverized coal flow of each branch in the pulverized coal flow and distributor of main pipe rail is monitored；
Step S2: each branch in the distributor is divided into set of fingers A and set of fingers B, and to the branch collection
The A and set of fingers B is closed to be initialized；
Step S3: the maximum value Qmax of each branch pulverized coal flow Qa in set of fingers A described in dynamic lookup, record is described most
Big value Qmax corresponds to the number k of branch；
Step S4: synchronizing the pulverized coal flow Qb for turning down each branch in the set of fingers B, so that the branch that number is k
Pulverized coal flow Qak increases, until Qak=Qb；
Step S5: the branch for numbering as k is moved in the set of fingers B from the set of fingers A；
Step S6: circulation step S3 to step S5, until the pulverized coal flow of all branches is equal in the distributor, it is adaptive
Adjustment process is answered to terminate.
Further, the step S2 includes:
From all branches in the distributor, the maximum value Qmax1 of pulverized coal flow is found out, and records the maximum
Value Qmax1 corresponds to the number k1 of branch；
The branch for numbering as k1 is added to the set of fingers B, and by all branches in addition to number k1 be added to
The set of fingers A.
Optionally, the method also includes:
When finding out the maximum value Qmax1 of pulverized coal flow, the number of number k1 and the N articles branch is replaced, so that most
It is N that big value Qmax1, which corresponds to the number of branch, and the number of former the N articles branch is k1, wherein is included in the N distributor
Branch sum；
When finding out the maximum value Qmax of pulverized coal flow Qa, number k and the number of the M articles branch are replaced, made
Obtaining maximum value Qmax and corresponding to the number of branch is M, and the number of former the M articles branch is k, wherein M is included in set of fingers A
Branch number, M be less than or equal to N-1.
Optionally, when the branch for numbering as k is moved to the set of fingers B from the set of fingers A, to the branch
The branch number M that set A is included is updated, so that M=M-1；
When the automatic adjusument process enters next circulation, when finding out each branch coal dust in the set of fingers A
The maximum value Qmax number k for corresponding to branch is replaced into updated M value by the maximum value Qmax of flow Qa.
Optionally, the step S6 includes:
Whether the branch number M for judging that the set of fingers A is included is equal to zero；
If the branch number M that the set of fingers A is included is equal to zero, the coal dust of all branches in the distributor
Flow is equal and is equal to mean value flow Qave, and controlling the automatic adjusument process terminates；Wherein Qave=Qt/N, Qt general pipeline
The pulverized coal flow on road.
Optionally, the step S6 includes:
When the branch for numbering as k is moved to the set of fingers B from the set of fingers A, to the set of fingers B institute
The branch number Z for including is updated, so that Z=Z+1；
Whether the branch number Z for judging that the set of fingers B is included is equal to N；
If the branch number Z that the set of fingers B is included is equal to N, the coal dust of all branches in the distributor
Flow is equal and is equal to mean value flow Qave, and controlling the automatic adjusument process terminates；Wherein Qave=Qt/N, Qt general pipeline
The pulverized coal flow on road.
Second aspect, the application provide a kind of limekiln fire coal self-adaption regulation system, the system comprises pulverized coal bin, set
Set the coal powder metering scale in the pulverized coal bin bottom, main pipe rail and the general pipeline for receiving the pulverized coal bin discharge material
The conveying fan of road one end connection and the distributor being connected to the main pipe rail other end；Along central axes on the distributor
Axial symmetry is evenly arranged the branch of several parallel connections, and each branch road is respectively equipped with regulating valve, the end point of each branch
It She You spray gun, which is characterized in that each branch road further respectively has branch flowmeter for pipe, and the main pipe rail is equipped with general pipeline stream
Meter, the system also includes control unit, described control unit is configured as executing following program steps:
Step S1: the pulverized coal flow of the main pipe rail and the pulverized coal flow of each branch are monitored；
Step S2: each branch in the distributor is divided into set of fingers A and set of fingers B, and to the branch collection
The A and set of fingers B is closed to be initialized；
Step S3: dynamic lookup goes out the maximum value Qmax of each branch pulverized coal flow Qa in the set of fingers A, described in record
Maximum value Qmax corresponds to the number k of branch；
Step S4: synchronizing the aperture for turning down each branch regulating valve in the set of fingers B, so that in the set of fingers B
The pulverized coal flow Qb of each branch, which is synchronized, to be turned down, and the pulverized coal flow Qak for the branch that number is k increases, until Qak=Qb；
Step S5: then the branch for numbering as k is moved in the set of fingers B from the set of fingers A；
Step S6: circulation step S3 to step S5, until the pulverized coal flow of all branches is equal in the distributor, it is adaptive
Adjustment process is answered to terminate.
The application have it is following the utility model has the advantages that when carrying out coal powder distribation, the pulverized coal flow of real-time monitoring main pipe rail and
The pulverized coal flow of each branch in distributor, to find that coal dust distributes non-uniform situation between each spray gun in time, and by certainly
The problem that adjustment process eliminates coal powder distribation unevenness is adapted to, specifically, during automatic adjusument, each branch quilt in distributor
It is divided into set of fingers A and set of fingers B, after initialization process, finds out pulverized coal flow to dynamic circulation from set of fingers A
The corresponding branch of maximum value records its number k, and synchronizes the pulverized coal flow Qb for turning down each branch in set of fingers B, works as number
When being equal to Qb for the pulverized coal flow Qak of the branch of k, the coal powder injection flow for the branch that number is k is deleveled, then will number the branch for k
Road is transferred in set of fingers B from set of fingers A, and so on, each branch in set of fingers A is leveled one by one, into
And the distributed area of each branch pulverized coal flow numerical value is compressed, it is final to realize that coal dust in each branch mean allocation, realizes limekiln
The accuracy controlling of interior temperature, conducive to the steady production in limekiln.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing limekiln coal supply system；
Fig. 2 is existing limekiln coal powder distribation schematic diagram；
Fig. 3 is a kind of limekiln fire coal adaptive regulation method flow chart shown in the embodiment of the present application one；
Fig. 4 is the limekiln fire coal adaptive regulation method including specific initialization step shown in the embodiment of the present application one
Flow chart；
Fig. 5 is a kind of limekiln fire coal adaptive regulation method flow chart shown in the embodiment of the present application two；
Fig. 6 is a kind of limekiln fire coal adaptive regulation method flow chart shown in the embodiment of the present application three；
Fig. 7 is a kind of structural representation of limekiln fire coal adaptive regulation method system shown in the embodiment of the present application four
Figure.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with attached drawing, it is right
Technical solution in the embodiment of the present application is clearly and completely described.
Based on coal supply system structure in limekiln shown in FIG. 1, in the embodiment of the present application one, as shown in figure 3, providing
A kind of limekiln fire coal adaptive regulation method, which comprises
Step S1: the pulverized coal flow of each branch in the pulverized coal flow and distributor of main pipe rail is monitored.
Total flowmeter for pipe can be installed on main pipe rail, to detect the pulverized coal flow of main pipe rail；Simultaneously in distributor Nei Gezhi
Corresponding branch flowmeter for pipe is respectively set in road, the pulverized coal flow for being distributed in each branch of real-time detection.When all branch pipes
When the detection data of flowmeter is all consistent, illustrate that the coal dust of each spray gun distribution is uniform, whereas if at least there is a branch
It is different from the pulverized coal flow of other branches, then there is the non-uniform problem of coal powder distribation, at this time, it may be necessary to start automatic adjusument
Journey realizes the accurate control of lime kiln temperature to eliminate coal powder distribation unevenness.
Specifically, the automatic adjusument process includes:
Step S2: each branch in the distributor is divided into set of fingers A and set of fingers B, and to the branch collection
The A and set of fingers B is closed to be initialized.
In the present embodiment, each branch curb distributor central axes axial symmetry is in parallel, is evenly arranged, and is needed in advance in distributor
Each branch be numbered, and guarantee the continuity of number, for example the quantity of general branch is 16 in distributor, then can be by
The sequence number consecutively of clockwise/counterclockwise be 1,2,3 ... 16, and in systems storage number it is corresponding between branch pass
System.The element that set of fingers A and set of fingers B are included is the number of branch.
Step S3: the maximum value Qmax of each branch pulverized coal flow Qa in set of fingers A described in dynamic lookup, record is described most
Big value Qmax corresponds to the number k of branch.After branch k is recorded, the pulverized coal flow to branch k is subjected to leveling processing, it is specific to join
According to step S4 and step S5.
Step S4: synchronizing the pulverized coal flow Qb for turning down each branch in the set of fingers B, so that the branch that number is k
Pulverized coal flow Qak increases, until Qak=Qb.All branches included in set of fingers B, while by their pulverized coal flow
It turns down, and flux change velocity should be consistent, guarantees each branch pulverized coal flow phase in set of fingers B at any time
Deng to realize the synchronous adjustment of each branch in set of fingers B.In the present embodiment, it can be opened by adjusting the regulating valve of branch road
Degree, to control the pulverized coal flow variation of each branch.
Step S5: the branch for numbering as k is moved in the set of fingers B from the set of fingers A.When number is k's
It after branch pulverized coal flow is deleveled, needs to transfer them in set of fingers B, so as to subsequent other branch with set of fingers B
Road is adjusted synchronously, i.e. set of fingers A and set of fingers B are dynamic changes.
Step S6: circulation step S3 to step S5, until the pulverized coal flow of all branches is equal in the distributor, it is adaptive
Adjustment process is answered to terminate.By circulation step S3 to step S5, the pulverized coal flow of all branches can be leveled one by one, when all
When the pulverized coal flow on road is equal, illustrating the coal powder distribation flow of each branch, automatic adjusument is uniform, can stop adaptive
Adjustment process.
By taking distributor includes 16 parallel branches as an example, it is assumed that a certain moment, set of fingers A dynamically change and is 1,3,
4,6,7,8,10,12 }, set of fingers B is { 2,5,9,11,13,14,15,16 }, and in all branches of set of fingers A, system is looked into
It finds out its pulverized coal flow of branch Qa3 that number is 3 to be maximized, i.e. Qmax=Qa3 then records maximum value Qmax and corresponds to branch
Number is 3.The pulverized coal flow Qb for turning down the branch that number is 2,5,9,11,13,14,15 and 16 is synchronized, due to the coal of main pipe rail
Powder flow is relative constant, therefore in set of fingers B when the pulverized coal flow reduction of each branch, correspondingly, the branch that number is 3
The pulverized coal flow Qa3 on road will increase, until the branch pulverized coal flow that number is 3 is deleveled, and is then 3 by number when Qa3=Qb
Branch moved in set of fingers B from set of fingers A, then updated set of fingers A be { Isosorbide-5-Nitrae, 6,7,8,10,12 }, branch
Set B be { 2,3,5,9,11,13,14,15,16 }, and so on, when remaining branch in set of fingers A pulverized coal flow by by
After a leveling, then the pulverized coal flow of all branches (number 1-16) is equal in distributor, and then compresses each branch pulverized coal flow number
The distributed area of value, it is final to realize that coal dust in each branch mean allocation, realizes the accuracy controlling of lime kiln temperature, is conducive to stone
The steady production of ash furnace.
In the initial time of automatic adjusument process starting, with branch complete or collected works, such as 1,2,3,4,5,6,7,8,9,
10,11,12,13,14,15,16 }, need to initialize set of fingers A and set of fingers B, further, such as Fig. 4 institute
Show, in the embodiment of the present application one, the step S2 includes:
Step S201: from all branches in the distributor, the maximum value Qmax1 of pulverized coal flow is found out, and is remembered
Record the number k1 that the maximum value Qmax1 corresponds to branch；
Step S202: the branch for numbering as k1 is added to the set of fingers B, and by all in addition to number k1
Road is added to the set of fingers A.
Here false in the initial time of automatic adjusument process starting still by taking distributor includes 16 parallel branches as an example
It is located in each branch that number is 1 to 16, its pulverized coal flow of number is 13 branch is maximum value, then maximum when recording initial
The number that value Qmax1 corresponds to branch is 13.It is incited somebody to action from complete or collected works { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 }
13 are added into set of fingers B, i.e. set of fingers B is { 13 }, then remaining element constitutes set of fingers A in complete or collected works, that is, props up
Road set A is { 1,2,3,4,5,6,7,8,9,10,11,12,14,15,16 }.Then step S3 and subsequent step are executed, it is false
If in all branches of set of fingers A, system searching goes out to number its pulverized coal flow of the branch Qa for being 1010It is maximized, i.e. Qmax
=Qa10, then recording maximum value Qmax and corresponding to the number of branch is 10.The pulverized coal flow Qb for the branch that number is 13 is turned down, until
Qa10When=Qb, the branch pulverized coal flow that number is 10 is deleveled, and the branch that number is 10 is then moved to branch from set of fingers A
In the set B of road, then updated set of fingers A is { 1,2,3,4,5,6,7,8,9,11,12,14,15,16 }, and set of fingers B is
{ 10,13 }, and so on, after the pulverized coal flow of remaining branch in set of fingers A is leveled one by one, then all in distributor
The pulverized coal flow on road (number 1-16) is equal, and then compresses the distributed area of each branch pulverized coal flow numerical value, finally realizes coal dust
In each branch mean allocation, the accuracy controlling of lime kiln temperature is realized, conducive to the steady production in limekiln.
As shown in figure 5, the limekiln fire coal that the embodiment of the present application two provides is certainly on the basis of one the method for embodiment
It adapts in adjusting method, the step S202 includes:
Step S2021: the number of number k1 and the N articles branch is replaced, so that maximum value Qmax1 corresponds to the number of branch
Number for N, former the N articles branch is k1, wherein N is total by the branch for including in distributor, thus the k1 that system is recorded
Replace with N.
Step S2022: the branch for numbering as N is added to the set of fingers B, and by all in addition to number N
Road is added into the set of fingers A.
By taking distributor includes 16 parallel branches as an example, i.e. N=16, in the initial time of automatic adjusument process starting,
Assuming that in each branch that number is 1 to 16, its pulverized coal flow of number is 13 branch is maximum value, then records initial time
The number that maximum value Qmax1 corresponds to branch is 13, and the maximum value Qmax1 of record is corresponded to branch number at this time and is replaced with by 13
16, the branch that former number is 16 is replaced with 13, from complete or collected works { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 }
Middle to be added 16 into set of fingers B, i.e. set of fingers B is { 16 }, then remaining element constitutes set of fingers A in complete or collected works,
That is set of fingers A is { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 }.
Then it executes:
Step S3: the maximum value Qmax of each branch pulverized coal flow Qa in set of fingers A described in dynamic lookup, record is described most
Big value Qmax corresponds to the number k of branch.
Step S301: number k and the number of the M articles branch are replaced, so that maximum value Qmax corresponds to the volume of branch
It number is M, the number of former the M articles branch is k, wherein M is branch number included in set of fingers A, and M is less than or equal to N-
1。
Step S401: synchronizing the pulverized coal flow Qb for turning down each branch in the set of fingers B, so that the branch that number is M
Pulverized coal flow QaMIncrease, until QaM=Qb.
Step S501: the branch for numbering as M is moved in the set of fingers B from the set of fingers A.
According to precedent, after initialization, set of fingers A is { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 }, branch
Road set B is { 16 }, at this point, branch number M=15 included in set of fingers A.Then in dynamic lookup out branch set A
The branch that number is 8, pulverized coal flow Qa8For maximum value, i.e. Qmax=Qa10, then the volume that maximum value Qmax corresponds to branch is recorded
Number it is 8, the maximum value Qmax of record correspond into branch number at this time and replaces with 15 by 8, the former branch for being 15 of numbering is replaced with
8.The pulverized coal flow Qb for turning down the branch that current number is 16 is synchronized, so that the pulverized coal flow Qa for the branch that number is 1515Increase,
Whether two bypass flows for judging that number is 15 and 16 are equal, work as Qa15When=Qb, the branch pulverized coal flow that number is 15 is adjusted
It is flat, then number 15 is moved in set of fingers B from set of fingers A, then set of fingers A variation be 1,2,3,4,5,6,7,
8,9,10,11,12,13,14 }, set of fingers B is { 15,16 }.
After step S501, the method also includes step S7: the branch number M for being included to the set of fingers A is carried out
It updates, so that M=M-1.When automatic adjusument process enters next circulation, when finding out each branch coal dust in set of fingers A
The maximum value Qmax of flow Qa, the number k of branch are replaced into updated M value.
When will number 15 be moved to set of fingers B from set of fingers A after, assignment again in other words is updated to M value,
Make M=14, when automatic adjusument process enters next circulation, it is assumed that number is 12 in dynamic lookup out branch set A
Branch, pulverized coal flow Qa12For maximum value, i.e. Qmax=Qa12, then the maximum value Qmax of record is corresponded into branch number by 12
Updated M value 14 is replaced with, the branch number that former number is 14 is replaced with 12.Synchronize the branch for turning down that number is 15 and 16
Pulverized coal flow Qb, judge number be 14,15 and 16 three branch pulverized coal flows it is whether equal, work as Qa14When=Qb, number is
14 branch pulverized coal flow is deleveled, and is then moved to number 14 in set of fingers B from set of fingers A, then set of fingers A becomes
It turns to { 1,2,3,4,5,6,7,8,9,10,11,12,13 }, set of fingers B is { 14,15,16 }, then M value is updated to 13.It is this
Mode can make the element in set of fingers A and set of fingers B be ordered and continuously, when number k is turned by set of fingers A
After moving to set of fingers B, the maximum number in set of fingers A is the value of subsequent cycle M.
After executing the step S7, step S6 is executed, step S6 includes: here
Whether step S601, the branch number M for judging that the set of fingers A is included are equal to zero.
If the branch number M that set of fingers A is included is equal to zero, illustrate set of fingers A for empty set, in set of fingers A
Each branch leveled and finished, then the pulverized coal flow of all branches is equal in distributor and is equal to mean value flow Qave, control
Automatic adjusument process terminates；Wherein Qave=Qt/N, Qt are the pulverized coal flow of main pipe rail, and N is by the interior branch for including of distributor
Road sum.
If the branch number M that set of fingers A is included is greater than zero, illustrates that coal powder distribation is not yet thoroughly uniform, then return
Step S3 continues to execute subsequent each step, until M is equal to zero, automatic adjusument process terminates.
As shown in fig. 6, in the limekiln fire coal adaptive regulation method that the embodiment of the present application three provides, with two institute of embodiment
It states unlike method, after executing the step S7, executes step S6, step S6 includes: here
Step S602: the branch number Z for being included to the set of fingers B is updated, so that Z=Z+1.Alternatively, by
In the number of branches summation of set of fingers A and set of fingers B be N, can also be according to Z=N-M, to calculate the value for obtaining Z.
Step S603: whether the branch number Z for judging that the set of fingers B is included is equal to N；
If the branch number Z that the set of fingers B is included is equal to N, i.e. set of fingers B is complete or collected works, and set of fingers A is
Empty set illustrates that all branches in set of fingers A have leveled and finishes, then in the distributor all branches pulverized coal flow phase
Deng and be equal to mean value flow Qave, controlling the automatic adjusument process terminates；Wherein Qave=Qt/N, Qt are the coal of main pipe rail
Powder flow.
If the branch number Z that the set of fingers B is included is less than N, illustrates that coal powder distribation is not yet thoroughly uniform, then return
Step S3 is returned, subsequent each step is continued to execute, until Z is equal to N, automatic adjusument process terminates.
It should be noted that in the above various embodiments, element that set of fingers A and set of fingers B are included can be according to
Ascending or descending order arrangement, set specific configuration are not limited to described in each embodiment of the application.In addition, branch shown in embodiment
Number is number, and in practical applications, the other forms such as letter also may be selected in number.
As shown in fig. 7, the embodiment of the present application four, which provides a kind of the application, provides a kind of limekiln fire coal automatic adjusument system
System the system comprises pulverized coal bin 1, is arranged in 1 bottom of pulverized coal bin for realizing the limekiln fire coal adaptive regulation method
Coal powder metering scale 2, for receive pulverized coal bin 1 be discharged material main pipe rail 3, connect with 3 one end of main pipe rail conveying fan 4,
And the distributor 5 being connected to 3 other end of main pipe rail；Along central axes, axial symmetry is evenly arranged several parallel connections on distributor 5
Branch 6 is respectively equipped with regulating valve 7 on each branch 6, and the end of each branch 6 is respectively equipped with spray gun 8, further respectively has on each branch 6
Branch flowmeter for pipe 10, main pipe rail 3 are equipped with total flowmeter for pipe 9.
The system also includes control unit, described control unit is configured as executing following program steps:
Step S1: the pulverized coal flow of the main pipe rail and the pulverized coal flow of each branch are monitored；
Step S2: each branch in the distributor is divided into set of fingers A and set of fingers B, and to the branch collection
The A and set of fingers B is closed to be initialized；
Step S3: dynamic lookup goes out the maximum value Qmax of each branch pulverized coal flow Qa in the set of fingers A, described in record
Maximum value Qmax corresponds to the number k of branch；
Step S4: synchronizing the aperture for turning down each branch regulating valve in the set of fingers B, so that in the set of fingers B
The pulverized coal flow Qb of each branch, which is synchronized, to be turned down, and the pulverized coal flow Qak for the branch that number is k increases, until Qak=Qb；
Step S5: then the branch for numbering as k is moved in the set of fingers B from the set of fingers A；
Step S6: circulation step S3 to step S5, until the pulverized coal flow of all branches is equal in the distributor, it is adaptive
Adjustment process is answered to terminate.
In addition, described control unit can be further configured to execute each method described in embodiment two and embodiment three
Step, details are not described herein for the present embodiment.
The material that pulverized coal bin 1 is discharged into main pipe rail 3, is opened conveying fan 4, is led to after the weighing of coal powder metering scale 2
It crosses wind-force the coal dust in main pipe rail 3 is delivered in distributor 5, coal dust, which enters after the distribution of distributor 5 through each branch 6, to be sprayed
In rifle 8, in the process, the pulverized coal flow Qt of total 9 real-time detection main pipe rail 3 of flowmeter for pipe, 10 real-time detection of branch flowmeter for pipe
The pulverized coal flow of corresponding branch starts automatic adjusument process, passes through control to find the non-uniform problem of coal powder distribation in time
The regulation of unit processed, it is ensured that each branch coal powder distribation is uniform, enables the uniform coal powder injection of each spray gun 8.Optionally, each branch
It can be connected by hose between 6 and spray gun 8, the flow control valve of electronic type may be selected in regulating valve 7, in order to which system is automatic and essence
True ground control valve aperture to accurately control the pulverized coal flow of each branch, and is not necessarily to manual hand manipulation, improves system
Working efficiency and reliability.
From the above technical scheme, fire coal adaptive regulation method in limekiln provided by the present application and system are carrying out
When coal powder distribation, the pulverized coal flow of each branch in the pulverized coal flow and distributor of real-time monitoring main pipe rail, to find coal in time
Powder distributes non-uniform situation between each spray gun, and the problem of coal powder distribation unevenness, tool are eliminated by automatic adjusument process
Body, during automatic adjusument, each branch is divided into set of fingers A and set of fingers B, initialization process in distributor
Afterwards, the corresponding branch of pulverized coal flow maximum value is found out to dynamic circulation from set of fingers A, records its number k, and synchronous
The pulverized coal flow Qb for turning down each branch in set of fingers B, when the pulverized coal flow Qak for the branch that number is k is equal to Qb, number is
The coal powder injection flow of the branch of k is deleveled, then is transferred to the branch for numbering as k in set of fingers B from set of fingers A, with such
It pushes away, each branch in set of fingers A is leveled one by one, and then compress the distributed area of each branch pulverized coal flow numerical value, most
Realize that coal dust in each branch mean allocation, realizes the accuracy controlling of lime kiln temperature, conducive to the steady production in limekiln eventually.
It is involved that those skilled in the art can be understood that the technology in the embodiment of the present application can add by software
And each entity device and device realize.In the specific implementation, the application also provides a kind of computer storage medium, wherein
The computer storage medium can be stored with program, which may include the coal-fired adaptive tune in limekiln provided by the present application when executing
Step some or all of in each embodiment of section method and system.The storage medium can be magnetic disk, CD, read-only storage
Memory body (English: read-only memory, referred to as: ROM) or random access memory (English: random access
Memory, referred to as: RAM) etc..
Same and similar part reference mutually between each embodiment in this specification.
Above-described the application embodiment is not intended to limit the scope of the present invention..
Claims (7)
1. a kind of limekiln fire coal adaptive regulation method, which is characterized in that the described method includes:
Step S1: the pulverized coal flow of each branch in the pulverized coal flow and distributor of main pipe rail is monitored；
Step S2: being divided into set of fingers A and set of fingers B for each branch in the distributor, and to the set of fingers A and
The set of fingers B is initialized；
Step S3: the maximum value Qmax of each branch pulverized coal flow Qa in set of fingers A described in dynamic lookup records the maximum value
Qmax corresponds to the number k of branch；
Step S4: synchronizing the pulverized coal flow Qb for turning down each branch in the set of fingers B, so that the coal dust for the branch that number is k
Flow Qak increases, until Qak=Qb；
Step S5: the branch for numbering as k is moved in the set of fingers B from the set of fingers A；
Step S6: circulation step S3 to step S5, until the pulverized coal flow of all branches is equal in the distributor, it is adaptive to adjust
Section process terminates.
2. the method according to claim 1, wherein the step S2 includes:
From all branches in the distributor, the maximum value Qmax1 of pulverized coal flow is found out, and records the maximum value
Qmax1 corresponds to the number k1 of branch；
The branch for numbering as k1 is added to the set of fingers B, and all branches in addition to number k1 are added to described
Set of fingers A.
3. according to the method described in claim 2, it is characterized in that, the method also includes:
When finding out the maximum value Qmax1 of pulverized coal flow, the number of number k1 and the N articles branch is replaced, so that maximum value
The number that Qmax1 corresponds to branch is N, and the number of former the N articles branch is k1, wherein N is by the interior branch for including of the distributor
Sum；
When finding out the maximum value Qmax of pulverized coal flow Qa, number k and the number of the M articles branch are replaced, so that most
It is M that big value Qmax, which corresponds to the number of branch, and the number of former the M articles branch is k, wherein M is branch included in set of fingers A
Road number, M are less than or equal to N-1.
4. according to the method described in claim 3, it is characterized in that, the method also includes:
When the branch for numbering as k is moved to the set of fingers B from the set of fingers A, included to the set of fingers A
Branch number M be updated so that M=M-1；
When the automatic adjusument process enters next circulation, when finding out each branch pulverized coal flow in the set of fingers A
The maximum value Qmax of Qa, the number k of branch are replaced into updated M value.
5. the method according to claim 3 or 4 is characterized in that, the step S6 includes:
Whether the branch number M for judging that the set of fingers A is included is equal to zero；
If the branch number M that the set of fingers A is included is equal to zero, the pulverized coal flow of all branches in the distributor
It is equal and be equal to mean value flow Qave, controlling the automatic adjusument process terminates；Wherein Qave=Qt/N, Qt are main pipe rail
Pulverized coal flow.
6. the method according to claim 3 or 4, which is characterized in that the step S6 includes:
When the branch for numbering as k is moved to the set of fingers B from the set of fingers A, included to the set of fingers B
Branch number Z be updated so that Z=Z+1；
Whether the branch number Z for judging that the set of fingers B is included is equal to N；
If the branch number Z that the set of fingers B is included is equal to N, the pulverized coal flow of all branches in the distributor
It is equal and be equal to mean value flow Qave, controlling the automatic adjusument process terminates；Wherein Qave=Qt/N, Qt are main pipe rail
Pulverized coal flow.
7. the system comprises pulverized coal bin, the pulverized coal bin bottom is arranged in a kind of limekiln fire coal self-adaption regulation system
Coal powder metering scale, the main pipe rail for receiving pulverized coal bin discharge material, the conveying fan being connect with described main pipe rail one end,
And the distributor being connected to the main pipe rail other end；If along central axes, axial symmetry has been evenly arranged dry doubling on the distributor
The branch of connection, each branch road are respectively equipped with regulating valve, and the end of each branch is respectively equipped with spray gun, which is characterized in that
Each branch road further respectively has branch flowmeter for pipe, and the main pipe rail is equipped with total flowmeter for pipe, and the system also includes controls
Unit processed, described control unit are configured as executing following program steps:
Step S1: the pulverized coal flow of the main pipe rail and the pulverized coal flow of each branch are monitored；
Step S2: being divided into set of fingers A and set of fingers B for each branch in the distributor, and to the set of fingers A and
The set of fingers B is initialized；
Step S3: dynamic lookup goes out the maximum value Qmax of each branch pulverized coal flow Qa in the set of fingers A, records the maximum
Value Qmax corresponds to the number k of branch；
Step S4: synchronizing the aperture for turning down each branch regulating valve in the set of fingers B, so that each in the set of fingers B
The pulverized coal flow Qb on road, which is synchronized, to be turned down, and the pulverized coal flow Qak for the branch that number is k increases, until Qak=Qb；
Step S5: then the branch for numbering as k is moved in the set of fingers B from the set of fingers A；
Step S6: circulation step S3 to step S5, until the pulverized coal flow of all branches is equal in the distributor, it is adaptive to adjust
Section process terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242930.2A CN109231857B (en) | 2018-10-24 | 2018-10-24 | Self-adaptive adjustment method and system for lime kiln fuel coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242930.2A CN109231857B (en) | 2018-10-24 | 2018-10-24 | Self-adaptive adjustment method and system for lime kiln fuel coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109231857A true CN109231857A (en) | 2019-01-18 |
| CN109231857B CN109231857B (en) | 2021-03-05 |
Family
ID=65081773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811242930.2A Active CN109231857B (en) | 2018-10-24 | 2018-10-24 | Self-adaptive adjustment method and system for lime kiln fuel coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109231857B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1330813C (en) * | 1988-05-24 | 1994-07-19 | Raymond Keeheum Kim | Pulverized coal flow controller |
| CN102661613A (en) * | 2012-05-10 | 2012-09-12 | 北京华电天仁电力控制技术有限公司 | Air and powder dynamic balancing method based on on-line measurement of coal powder distribution |
| CN102853447A (en) * | 2012-05-09 | 2013-01-02 | 北京华电天仁电力控制技术有限公司 | On-line coal powder pipeline wind-powder leveling method |
| CN103034251A (en) * | 2012-12-05 | 2013-04-10 | 卓旦春 | Debugging method of static balance valve |
| EP2623861A1 (en) * | 2010-09-30 | 2013-08-07 | Babcock-Hitachi Kabushiki Kaisha | Combustion system and method for operating same |
| CN103555872A (en) * | 2013-10-18 | 2014-02-05 | 南京钢铁股份有限公司 | Full automatic control method and system of blast furnace injection system |
| CN103822223A (en) * | 2014-03-13 | 2014-05-28 | 青岛立宇科技开发有限公司 | Control system and method thereof for realizing uniform pulverized coal distribution for direct firing pulverizing system |
| CN103939939A (en) * | 2014-03-13 | 2014-07-23 | 青岛立宇科技开发有限公司 | Digitized combustion control and optimization method and system for pulverized coal boiler |
-
2018
- 2018-10-24 CN CN201811242930.2A patent/CN109231857B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1330813C (en) * | 1988-05-24 | 1994-07-19 | Raymond Keeheum Kim | Pulverized coal flow controller |
| EP2623861A1 (en) * | 2010-09-30 | 2013-08-07 | Babcock-Hitachi Kabushiki Kaisha | Combustion system and method for operating same |
| CN102853447A (en) * | 2012-05-09 | 2013-01-02 | 北京华电天仁电力控制技术有限公司 | On-line coal powder pipeline wind-powder leveling method |
| CN102661613A (en) * | 2012-05-10 | 2012-09-12 | 北京华电天仁电力控制技术有限公司 | Air and powder dynamic balancing method based on on-line measurement of coal powder distribution |
| CN103034251A (en) * | 2012-12-05 | 2013-04-10 | 卓旦春 | Debugging method of static balance valve |
| CN103555872A (en) * | 2013-10-18 | 2014-02-05 | 南京钢铁股份有限公司 | Full automatic control method and system of blast furnace injection system |
| CN103822223A (en) * | 2014-03-13 | 2014-05-28 | 青岛立宇科技开发有限公司 | Control system and method thereof for realizing uniform pulverized coal distribution for direct firing pulverizing system |
| CN103939939A (en) * | 2014-03-13 | 2014-07-23 | 青岛立宇科技开发有限公司 | Digitized combustion control and optimization method and system for pulverized coal boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109231857B (en) | 2021-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108672025B (en) | A kind of multi-state optimal decoupling control method of steel ball coal-grinding pulverized coal preparation system | |
| CN102735050B (en) | Method of setting temperature of continuous heating furnace and method of controlling furnace temperature | |
| CN103981308A (en) | New charging method of schreyerite smelting blast furnace | |
| CN104133945A (en) | Method for controlling radial ore to coke ratio in blast furnace burden distribution process | |
| CN109231857A (en) | A kind of limekiln fire coal adaptive regulation method and system | |
| AU2014326102A1 (en) | Method for operating cement production facility | |
| CN101870561B (en) | Large automatic shaft lime kiln | |
| CN110128040A (en) | A kind of change system of scale consumption ardealite anhydrite powder | |
| CN103408393A (en) | Polyvinyl chloride loop route production method | |
| CN105330178B (en) | A kind of method that production active lime is transformed using cement producing line | |
| CN202119234U (en) | Digitalized fully-automatic fireproof material drying oven | |
| CN109046021A (en) | A kind of SCR system of strong adaptive ability accurately sprays ammonia control method | |
| CN102264870A (en) | Material withdrawal apparatus and methods of regulating material inventory in one or more units | |
| CN102317479B (en) | Method and system for adjusting the flow rate of charge material in a charging process of a shaft furnace | |
| CN102901093A (en) | Double-way controllable material returning valve for circulating fluidized bed boiler | |
| CN105293572A (en) | Continuous slag returning system for low-temperature chlorination furnace | |
| CA1047765A (en) | Control of vertical heat treating vessels | |
| CN108662906B (en) | A kind of vertical cooling machine flow controlling method of air and device | |
| CN102648377A (en) | Metering system, dense phase conveying system and method for supplying bulk material in powder form | |
| CN103073203A (en) | Sleeve kiln energy consumption monitoring system and control method thereof | |
| CN215102891U (en) | Waste heat recycling system for II type anhydrous gypsum powder production line | |
| CN113149487B (en) | Gypsum calcining device and calcining system | |
| CN108168314A (en) | For the blanking transport system of powder calcining | |
| CN204265646U (en) | A kind of Large Lime kiln kiln top rotary distributing device | |
| US3884621A (en) | Control of vertical heat treating vessels |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |