CN108265142A - Coal Injection Rate at BF adjusting method and system - Google Patents
Coal Injection Rate at BF adjusting method and system Download PDFInfo
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- CN108265142A CN108265142A CN201810187416.7A CN201810187416A CN108265142A CN 108265142 A CN108265142 A CN 108265142A CN 201810187416 A CN201810187416 A CN 201810187416A CN 108265142 A CN108265142 A CN 108265142A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/007—Conditions of the cokes or characterised by the cokes used
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Abstract
The invention discloses a kind of Coal Injection Rate at BF adjusting methods and system, this method to include:The replacement ratio of coal injection is determined according to the calorific capacity of calorific capacity and coke before blast furnace air outlet of the coal injection before blast furnace air outlet；The potential economic value of coal injection is determined according to button water price lattice, the procurement price of coke and the replacement ratio of coal injection of coal injection；If the potential economic value of coal injection is more than the first default economic threshold, the coal ejection ratio being directed to when previous blast furnace process is turned up；If the potential economic value of coal injection is less than the second default economic threshold, turns down for when the coal ejection ratio of previous blast furnace process, more accurately coal powder blowing amount can be improved for blast furnace process by the present invention.
Description
Technical field
The present invention relates to blast furnace process field more particularly to Coal Injection Rate at BF adjusting method and systems.
Background technology
The molten iron production method of whole world steel plant is mainly blast-furnace iron-making method at present, blast furnace process produce liquid molten iron in addition to
Be exactly coke outside iron-bearing material, and the production of coke is other than the problem of resource increasingly scarcity, exactly coking process is to environment
High risks.Therefore, the task that the consumption of ton ferrocoke is domestic and international all ironmaking workers, half a century, using spray are reduced
It blows fuel instead part of coke and achieves very big achievement, China is for a long time always based on coal injection.But injection coal
Powder type is various, and the indexs such as chemical composition, calorific capacity, flammability, grindability are different.Coal chooses whether in blast fumance
Suitably, the indicator of costs of blast furnace is directly influenced, and injecting coal quantity is bigger, this influence is also bigger.
Evaluation for coal dust economy, at present existing method be only focusing only on coal dust chemical composition in itself, grindability,
In the indexs such as calorific capacity, flammability, therefore inaccuracy is determined to the potential economic value of injection coal, and then caused for blast furnace process
Coal ejection ratio it is inaccurate, harmful effect is caused to blast furnace process.
Invention content
The embodiment of the present invention solves blast furnace in the prior art by providing a kind of Coal Injection Rate at BF adjusting method and system
The technical issues of coal ejection ratio of smelting is inaccurate.
On the one hand, the present invention provides a kind of Coal Injection Rate at BF adjusting method by one embodiment of the invention, including:
It obtains when calorific capacity of the previous blast furnace process institute's coal injection before blast furnace air outlet and described works as previous blast furnace smelting
Calorific capacity of the coke used in refining before blast furnace air outlet；
According to calorific capacity and coke fever before blast furnace air outlet of the coal injection before blast furnace air outlet
Value determines the replacement ratio of the coal injection；
Obtain the button water price lattice of the coal injection and the procurement price of the coke；
According to the button water price lattice of the coal injection, the procurement price of the coke and the replacement ratio of the coal injection,
Determine the potential economic value of the coal injection；
Judge whether the potential economic value of the coal injection is more than the first default economic threshold, be directed to if so, being turned up
It is described when the coal ejection ratio of previous blast furnace process；
Judge whether the potential economic value of the coal injection is less than the described second default economic threshold, if so, turning down
For described when the coal ejection ratio of previous blast furnace process, wherein, it is pre- that the second default economic threshold is less than or equal to described first
If economic threshold.
Optionally, calorific capacity of the previous blast furnace process institute's coal injection before blast furnace air outlet is worked as in the acquisition, including：
Detect carbon content, ash content and the sulfur content of the coal injection；
Carbon content, ash content and sulfur content based on the coal injection calculate the coal injection according to equation below and exist
Calorific capacity before blast furnace air outlet：
Q1=a × C1-b×Ad1-n×S1；
Wherein, Q1For the calorific capacity of the coal injection, C1For the carbon content of the coal injection, Ad1For the injection coal
The content of ashes of powder, S1For the sulfur content of the coal injection, a is carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content system
Number.
Optionally, it is described to work as calorific capacity of the coke before blast furnace air outlet used in previous blast furnace process, including：
Detect carbon content, ash content and the sulfur content of the coke；
Carbon content, ash content and sulfur content based on the coke calculate the coke in blast furnace outlet air according to equation below
Calorific capacity before mouthful：
Q2=a × C2-b×Ad2-n×S2；
Wherein, Q2For the calorific capacity of the coke, C2For the carbon content of the coke, Ad2Ash content for the coke contains
Amount, S2For the sulfur content of the coke, a is carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content coefficient.
Optionally, it is described according to the button water price lattice of the coal injection, the procurement price of the coke and the injection coal
The replacement ratio of powder determines the potential economic value of the coal injection, specially：The injection coal is calculated according to formula is calculated as below
The potential economic value of powder：
Wherein, KcoalFor the potential economic value of the coal injection, PcoalThe button water price lattice of the coal injection, PcokeFor
The procurement price of the coke, Q1For the calorific capacity of the coal injection, Q2Calorific capacity for the coke.
Optionally, it is described that the coal ejection ratio for working as previous blast furnace process for described in is turned up, specially：
It determines to work as previous coal ejection ratio corresponding to the potential economic value of the coal injection based on the first predetermined linear relationship
Height-regulating amount, wherein, the first predetermined linear relationship linearly increases for coal ejection ratio height-regulating amount with the increase of potential economic value；
With described when previous coal ejection ratio height-regulating amount, for described when the coal ejection ratio of previous blast furnace process is turned up.
Optionally, it is described to turn down for the coal ejection ratio for working as previous blast furnace process, including：
It determines to work as previous coal ejection ratio corresponding to the potential economic value of the coal injection based on the second predetermined linear relationship
The amount of turning down, wherein, second linear relationship linearly increases for the coal ejection ratio amount of turning down with the reduction of potential economic value；
With described when the previous coal ejection ratio amount of turning down, for described when the coal ejection ratio of previous blast furnace process is turned down.
Optionally, the procurement price of the button water price lattice and the coke for obtaining the coal injection, including：
The procurement price of the coal injection and the procurement price of the coke are obtained from database；
Detect the water content of the coal injection；
The water content of procurement price and the coal injection based on the coal injection, according to calculating equation below
The button water price lattice of coal injection：
Pcoal=Pbuy÷(1-Mt)；
Wherein, PcoalThe button water price lattice of the coal injection, PbuyFor the procurement price of the coal injection, MtFor the spray
Blow the water content of coal dust.
On the other hand, the present invention provides a kind of Coal Injection Rate at BF regulating system by another embodiment, including:
Calorific capacity obtaining unit, for obtaining when fever of the previous blast furnace process institute's coal injection before blast furnace air outlet
It is worth and described when calorific capacity of the coke before blast furnace air outlet used in previous blast furnace process；
Replacement ratio determination unit, for being existed according to calorific capacity of the coal injection before blast furnace air outlet and the coke
Calorific capacity before blast furnace air outlet determines the replacement ratio of the coal injection；
Price obtaining unit, for obtaining the procurement price of the button water price lattice of the coal injection and the coke；
Economic value determination unit, for button water price lattice, the procurement price of the coke and the institute according to the coal injection
The replacement ratio of coal injection is stated, determines the potential economic value of the coal injection；
Unit is turned up in coal ejection ratio, and economic threshold is preset for judging whether the potential economic value of the coal injection is more than first
Value, if so, being turned up for the coal ejection ratio for working as previous blast furnace process；
Coal ejection ratio turns down unit, for judging whether the potential economic value of the coal injection is less than the described second default warp
Ji threshold value, if so, turn down for the coal ejection ratio for working as previous blast furnace process, wherein, the second default economic threshold is small
In or equal to the first default economic threshold.
Optionally, the calorific capacity obtaining unit, is specifically used for：
Detect carbon content, ash content and the sulfur content of the coal injection；
Carbon content, ash content and sulfur content based on the coal injection calculate the coal injection according to equation below and exist
Calorific capacity before blast furnace air outlet：
Q1=a × C1-b×Ad1-n×S1；
Wherein, Q1For the calorific capacity of the coal injection, C1For the carbon content of the coal injection, Ad1For the injection coal
The content of ashes of powder, S1For the sulfur content of the coal injection, a is carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content system
Number.
Optionally, the calorific capacity obtaining unit, also particularly useful for：
Detect carbon content, ash content and the sulfur content of the coke；
Carbon content, ash content and sulfur content based on the coke calculate the coke in blast furnace outlet air according to equation below
Calorific capacity before mouthful：
Q2=a × C2-b×Ad2-n×S2；
Wherein, Q2For the calorific capacity of the coke, C2For the carbon content of the coke, Ad2Ash content for the coke contains
Amount, S2For the sulfur content of the coke, a is carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content coefficient.
Optionally, the economic value determination unit, is specifically used for：The coal injection is calculated according to formula is calculated as below
Potential economic value：
Wherein, KcoalFor the potential economic value of the coal injection, PcoalThe button water price lattice of the coal injection, PcokeFor
The procurement price of the coke, Q1For the calorific capacity of the coal injection, Q2Calorific capacity for the coke.
Optionally, unit is turned up in the coal ejection ratio, specifically includes：
Height-regulating amount determination subelement, for determining the potential economic value of the coal injection based on the first predetermined linear relationship
Corresponding works as previous coal ejection ratio height-regulating amount, wherein, the first predetermined linear relationship is coal ejection ratio height-regulating amount with potential warp
The increase of Ji value and linearly increase；
Be turned up and perform subelement, for described when previous coal ejection ratio height-regulating amount, for described when previous blast furnace process
Coal ejection ratio is turned up.
Optionally, the coal ejection ratio turns down unit, specifically includes：
The amount of turning down determination subelement, for determining the potential economic value of the coal injection based on the second predetermined linear relationship
Corresponding works as the previous coal ejection ratio amount of turning down, wherein, second linear relationship is the coal ejection ratio amount of turning down with potential economic value
Reduction and linearly increase；
Turn down execution subelement, for described when the previous coal ejection ratio amount of turning down, for described when previous blast furnace process
Coal ejection ratio is turned down.
Optionally, the price obtaining unit, is specifically used for：
The procurement price of the coal injection and the procurement price of the coke are obtained from database；
Detect the water content of the coal injection；
The water content of procurement price and the coal injection based on the coal injection, according to calculating equation below
The button water price lattice of coal injection：
Pcoal=Pbuy÷(1-Mt)；
Wherein, PcoalThe button water price lattice of the coal injection, PbuyFor the procurement price of the coal injection, MtFor the spray
Blow the water content of coal dust.
The one or more technical solutions provided in the embodiment of the present invention, have at least the following technical effects or advantages：
Due to true according to calorific capacity and coke calorific capacity before blast furnace air outlet of the coal injection before blast furnace air outlet
Determine the replacement ratio of coal injection；It is true according to the replacement ratio of the button water price lattice of coal injection, the procurement price of coke and coal injection
Determine the potential economic value of coal injection；If the potential economic value of coal injection is more than the first default economic threshold, height-regulating is directed to
When the coal ejection ratio of previous blast furnace process；If the potential economic value of coal injection is less than the second default economic threshold, turns down and be directed to
It is described when the coal ejection ratio of previous blast furnace process, the second default economic threshold is less than or equal to the first default economic threshold, so as to build
It has found the substitutional relation between the used product-coke substituted of coal dust and coal dust, and has also been adopted with institute substitute products-coke
Price hook is purchased, so as to the economy of more accurate evaluation pulverized coal injection in blast furnace, and coal ejection ratio is adjusted with this, can be blast furnace
It smelts and improves more accurately coal powder blowing amount.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present invention, for this
For the those of ordinary skill of field, without creative efforts, others are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the flow chart of Coal Injection Rate at BF adjusting method provided in an embodiment of the present invention；
Fig. 2 is the Program modual graph of Coal Injection Rate at BF regulating system provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention solves blast furnace process in the prior art by providing a kind of Coal Injection Rate at BF adjusting method
The technical issues of coal ejection ratio is inaccurate.
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without creative efforts shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of Coal Injection Rate at BF adjusting method, applied to Coal Injection Rate at BF regulating system, including
Industrial computer and the carbon content detector being connect with industrial computer, grey sorting-detecting instrument, sulfur content detector and moisture inspection
Survey instrument.Refering to what is shown in Fig. 1, the Coal Injection Rate at BF adjusting method includes the following steps:
It performs step S101, obtain when calorific capacity of the previous blast furnace process institute's coal injection before blast furnace air outlet and current
Calorific capacity of the coke before blast furnace air outlet used in secondary blast furnace process.
Specifically, it can be obtained by the way that mode is implemented as follows when previous blast furnace process institute's coal injection is before blast furnace air outlet
Calorific capacity：
First, carbon content, ash content and the sulfur content of the coal injection are detected.
When in previous blast furnace ironmaking process, lasting detection when it is previous to the carbon content of blast furnace institute coal injection, ash content and
Sulfur content.
Specifically, can be that carbon content detector, grey sorting-detecting instrument and sulfur content inspection are provided with before blast furnace air outlet
Instrument is surveyed, by carbon content detector when being detected the carbon content of coal injection in previous blast furnace ironmaking process, detected by ash content
Instrument when in previous blast furnace ironmaking process detect coal injection ash content, by sulfur content detector when previous blast furnace ironmaking process
The sulfur content of middle detection coal injection, industry is sent to by the carbon content of the coal injection of each self-test, ash content and sulfur content
Computer equipment.
Can also be before previous blast furnace process, the carbon content of previous blast furnace process institute coal injection, ash are worked as in detection
Point and sulfur content.
Then, carbon content, ash content and sulfur content based on the coal injection calculate the injection coal according to equation below
Calorific capacity of the powder before blast furnace air outlet：
Q1=a × C1-b×Ad1-n×S1；
Wherein, Q1For the calorific capacity of the coal injection, C1For the carbon content of the coal injection, Ad1For the injection coal
The content of ashes of powder, S1For the sulfur content of the coal injection, a is carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content system
Number.
Specifically, the pulverized coal injection into blast furna for coming from carbon content detector is received by industrial computer equipment or processor
The carbon content of powder, the ash content for coming from grey sorting-detecting instrument and after coming from the sulfur content of sulfur content detector, calculate high
Calorific capacity of the stove coal injection before blast furnace air outlet.
Specifically, the fever before previous blast furnace process is used in blast furnace air outlet can be obtained by the way that mode is implemented as follows
Value：
Detect carbon content, ash content and the sulfur content of the coke；Carbon content, ash content and sulfur content based on the coke,
Calorific capacity of the coke before blast furnace air outlet is calculated according to equation below：
Q2=a × C2-b×Ad2-n×S2；
Wherein, Q2For the calorific capacity of the coke, C2For the carbon content of the coke, Ad2Ash content for the coke contains
Amount, S2For the sulfur content of the coke, a is carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content coefficient.
Before previous blast furnace process starts, detection is when the carbon content of coke, ash content and sulphur used in previous blast furnace process
Content.Specifically, it can be before previous blast furnace process starts, be examined by the carbon content set before blast furnace air outlet
It surveys instrument, grey sorting-detecting instrument and sulfur content detector or is integrated with while detects carbon content, the comprehensive detection of ash content and sulfur content
Equipment, detection obtain carbon content, ash content and the sulfur content of coke, will detect carbon content, ash content and the sulfur content of the coke obtained
It is sent to industrial computer equipment or processor.
It should be noted that carbon concentration coefficient, ash content coefficient and sulfur content coefficient are historical experience value, it had been embodied
Cheng Zhong, carbon concentration coefficient could be provided as any number in 8400-9400, and ash content coefficient could be provided as in 2700-2900
Any number, sulfur content coefficient could be provided as any number in 18000-22000.
After step slol, step S102 is then performed：According to fever of the coal injection before blast furnace air outlet
Value and calorific capacity of the coke before blast furnace air outlet determine the replacement ratio of the coal injection.
Specifically, it is calculated by industrial computer equipment or processor according to equation below when previous blast furnace process is blown
The replacement ratio of coal dust：
Wherein, replacement ratios of the R for coal injection, Q1For the calorific capacity of coal injection, Q2Calorific capacity for coke.
Then step S103 is performed：Obtain the button water price lattice of the coal injection and the procurement price of the coke.
Specifically, step S103 includes the following steps 1~3：
It performs step 1, the procurement price of the coal injection and the procurement price of the coke is obtained from database.Having
In body implementation process, Ke Yishi, industrial computer read from the database of industrial computer coal injection procurement price and
The procurement price of the coke.
Perform step 2：Detect the water content of the coal injection.
When in previous blast furnace ironmaking process, by being arranged on the moisture detector set on the Transfer pipe of coal injection
It continues to monitor when the water content of institute's coal injection in previous blast furnace ironmaking process.
It should be noted that do not have between steps 1 and 2 it is stringent perform sequence, may be performed simultaneously, can also be successively
The execution of sequence.
After steps 1 and 2 are completed, step 3, the procurement price based on the coal injection and the injection coal are performed
The water content of powder calculates the button water price lattice of the coal injection according to equation below：
Pcoal=Pbuy÷(1-Mt)；
Wherein, PcoalThe button water price lattice of the coal injection, PbuyFor the procurement price of the coal injection, MtFor the spray
Blow the water content of coal dust.
After step S101~S103 completions, step S104 is then performed：According to the button water price lattice of the coal injection,
The replacement ratio of the procurement price of the coke and the coal injection determines the potential economic value of the coal injection.
Specifically, by industrial computer according to the potential economic value that formula calculating coal injection is calculated as below：
Wherein, KcoalFor the potential economic value of the coal injection, PcoalThe button water price lattice of the coal injection, PcokeFor
The procurement price of the coke, Q1For the calorific capacity of the coal injection, Q2Calorific capacity for the coke.
For example, the potential economic value of identified each batch coal dust can be referred to shown in the following table 1：
The potential economic value of 1. coal dust of table
| Title | Ash content | Water content | Sulfur content | Carbon content | Calorific capacity | Procurement price | Detain water price lattice | Replacement ratio | Potential economic value |
| A coals | 7.87% | 15.00% | 0.35% | 69.0% | 5506J | 600 yuan/t | 706 yuan/t | 0.69 | 562 yuan/t |
| B coals | 11.56% | 8.00% | 0.95% | 81.5% | 7147J | 837 yuan/t | 910 yuan/t | 0.90 | 736 yuan/t |
| C coals | 10.83% | 6.96% | 0.39% | 80.1% | 7148J | 945 yuan/t | 1016 yuan/t | 0.90 | 630 yuan/t |
| D coals | 8.99% | 8.00% | 0.39% | 83.1% | 7482J | 927 yuan/t | 1008 yuan/t | 0.94 | 715 yuan/t |
| Mixture Density Networks | 9.39% | 0% | 0.49% | 75.2% | 6708J | - | 841 yuan/t | 0.84 | 703 yuan/t |
| Coke | 12.31% | 0.30% | 0.78% | 86.1% | 7939J | 1829 yuan/t | - | 1.00 | - |
After step s 104, step S105 and step S106 is then performed：
Step S105：Judge whether the potential economic value of the coal injection is more than the first default economic threshold, if so,
It is turned up for the coal ejection ratio for working as previous blast furnace process.
Specifically, judge whether the potential economic value of the coal injection is more than first and presets economic threshold by industrial computer
Value, if so, industrial computer is turned up for the coal ejection ratio for working as previous blast furnace process.
It in specific implementation process, is performed by industrial computer, at least the following two kinds is turned up when previous blast furnace process
The embodiment of coal ejection ratio：
Embodiment one：Working as corresponding to the potential economic value of the coal injection, is determined based on the first predetermined linear relationship
Previous coal ejection ratio height-regulating amount, wherein, the first predetermined linear relationship is coal ejection ratio height-regulating amount with the increase of potential economic value
And linearly increase；With described when previous coal ejection ratio height-regulating amount, for described when the coal ejection ratio of previous blast furnace process is turned up.
Embodiment two：Industrial computer can be at least once turned up for the coal ejection ratio when previous blast furnace process,
Until it is turned up to coal ejection ratio preset value.
Embodiment three：Calculate the first warp between the potential economic value of the coal injection and the first default economic threshold
Ji difference value；Based on the coal ejection ratio height-regulating amount corresponding to the first difference value, for described when previous blast furnace process carries out height-regulating spray
Coal ratio.
Specifically, multiple height-regulating disparity ranges are provided with, it is each that disparity range and coal ejection ratio height-regulating amount is turned up one by one
It is corresponding, according to the height-regulating disparity range where the first economic disparities value, determine the coal ejection ratio corresponding to the first economic disparities value
Height-regulating amount, it is described when previous blast furnace process carries out height-regulating coal ejection ratio so as to be directed to.
Step S106, judge whether the potential economic value of the coal injection is less than the described second default economic threshold, such as
Fruit is turned down for the coal ejection ratio for working as previous blast furnace process, wherein, the second default economic threshold is less than or equal to institute
State the first default economic threshold.
Specifically, judge whether the potential economic value of the coal injection is less than the described second default warp by industrial computer
Ji threshold value, if so, turned down by industrial computer for the coal ejection ratio for working as previous blast furnace process, wherein, described second is pre-
If economic threshold is less than or equal to the described first default economic threshold
In specific implementation process, there is industrial computer execution, at least the following two kinds is used to turn down when previous blast furnace smelting
The embodiment of the coal ejection ratio of refining：
Embodiment one：Working as corresponding to the potential economic value of the coal injection, is determined based on the second predetermined linear relationship
The previous coal ejection ratio amount of turning down, wherein, second linear relationship for the coal ejection ratio amount of turning down with the reduction of potential economic value line
Property increase；With described when the previous coal ejection ratio amount of turning down, for described when the coal ejection ratio of previous blast furnace process is turned down.
Embodiment two：Can be directed to when the coal ejection ratio of previous blast furnace process be turned down at least once, up to turn down to
Coal ejection ratio preset value.
Embodiment three：Calculate the second warp between the potential economic value of the coal injection and the second default economic threshold
Ji difference value；Based on the coal ejection ratio amount of turning down corresponding to the second economic disparities value, for described when the progress of previous blast furnace process
Turn down coal ejection ratio.Specifically, be provided with it is multiple turn down disparity range, respectively turn down disparity range and the coal ejection ratio amount of turning down one by one
It is corresponding, disparity range is turned down according to where current difference value, determines that the coal ejection ratio corresponding to the second economic disparities value is turned down
Amount, it is described when previous blast furnace process turns down coal ejection ratio so as to be directed to.
Specifically, the second default economic threshold could be provided as 200 yuan.
Specifically, the first default economic threshold and the second default economic threshold can be 200 yuan.In another embodiment
In, step S105~S106 is specially：If it is judged that the potential economic value K of coal injectioncoal<200 yuan, control coal ejection ratio exists
0-100kg/t, if it is judged that the potential economic value of coal injection meets 200<Kcoal<700 yuan, control coal ejection ratio is in 100-
150kg/t, if it is judged that the potential economic value of coal injection meets Kcoal>700 yuan, control coal ejection ratio is in 150-250kg/t.
Based on same inventive concept, another embodiment of the present invention provides a kind of implementation Coal Injection Rate at BF of the present invention and adjusts
The Coal Injection Rate at BF regulating system of embodiment of the method, refering to what is shown in Fig. 2, the Coal Injection Rate at BF regulating system includes:
Calorific capacity obtaining unit 201, for obtaining when hair of the previous blast furnace process institute's coal injection before blast furnace air outlet
Calorific value and it is described work as calorific capacity of the coke before blast furnace air outlet used in previous blast furnace process；
Replacement ratio determination unit 202, for according to calorific capacity of the coal injection before blast furnace air outlet and the coke
Calorific capacity of the charcoal before blast furnace air outlet determines the replacement ratio of the coal injection；
Price obtaining unit 203, for obtaining the procurement price of the button water price lattice of the coal injection and the coke；
Economic value determination unit 204, for according to the coal injection button water price lattice, the procurement price of the coke and
The replacement ratio of the coal injection determines the potential economic value of the coal injection；
Unit 205 is turned up in coal ejection ratio, for judging whether the potential economic value of the coal injection is more than the first default warp
Ji threshold value, if so, being turned up for the coal ejection ratio for working as previous blast furnace process；
Coal ejection ratio turns down unit 206, for judging it is pre- whether the potential economic value of the coal injection is less than described second
If economic threshold, if so, turn down for the coal ejection ratio for working as previous blast furnace process, wherein, described second presets economic threshold
Value is less than or equal to the described first default economic threshold.
Optionally, the calorific capacity obtaining unit 201, is specifically used for：
Detect carbon content, ash content and the sulfur content of the coal injection；
Carbon content, ash content and sulfur content based on the coal injection calculate the coal injection according to equation below and exist
Calorific capacity before blast furnace air outlet：
Q1=a × C1-b×Ad1-n×S1；
Wherein, Q1For the calorific capacity of the coal injection, C1For the carbon content of the coal injection, Ad1For the injection coal
The content of ashes of powder, S1For the sulfur content of the coal injection, a is carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content system
Number.
Optionally, the calorific capacity obtaining unit 201, also particularly useful for：
Detect carbon content, ash content and the sulfur content of the coke；
Carbon content, ash content and sulfur content based on the coke calculate the coke in blast furnace outlet air according to equation below
Calorific capacity before mouthful：
Q2=a × C2-b×Ad2-n×S2；
Wherein, Q2For the calorific capacity of the coke, C2For the carbon content of the coke, Ad2Ash content for the coke contains
Amount, S2For the sulfur content of the coke, a is carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content coefficient.
Optionally, the economic value determination unit 204, is specifically used for：The injection coal is calculated according to formula is calculated as below
The potential economic value of powder：
Wherein, KcoalFor the potential economic value of the coal injection, PcoalThe button water price lattice of the coal injection, PcokeFor
The procurement price of the coke, Q1For the calorific capacity of the coal injection, Q2Calorific capacity for the coke.
Optionally, unit 205 is turned up in the coal ejection ratio, specifically includes：
Height-regulating amount determination subelement, for determining the potential economic value of the coal injection based on the first predetermined linear relationship
Corresponding works as previous coal ejection ratio height-regulating amount, wherein, the first predetermined linear relationship is coal ejection ratio height-regulating amount with potential warp
The increase of Ji value and linearly increase；
Be turned up and perform subelement, for described when previous coal ejection ratio height-regulating amount, for described when previous blast furnace process
Coal ejection ratio is turned up.
Optionally, the coal ejection ratio turns down unit 206, specifically includes：
The amount of turning down determination subelement, for determining the potential economic value of the coal injection based on the second predetermined linear relationship
Corresponding works as the previous coal ejection ratio amount of turning down, wherein, second linear relationship is the coal ejection ratio amount of turning down with potential economic value
Reduction and linearly increase；
Turn down execution subelement, for described when the previous coal ejection ratio amount of turning down, for described when previous blast furnace process
Coal ejection ratio is turned down.
Optionally, the price obtaining unit 203, is specifically used for：
The procurement price of the coal injection and the procurement price of the coke are obtained from database；
Detect the water content of the coal injection；
The water content of procurement price and the coal injection based on the coal injection, according to calculating equation below
The button water price lattice of coal injection：
Pcoal=Pbuy÷(1-Mt)；
Wherein, PcoalThe button water price lattice of the coal injection, PbuyFor the procurement price of the coal injection, MtFor the spray
Blow the water content of coal dust.
By the system that the present embodiment is introduced by implement the embodiment of the present invention in Coal Injection Rate at BF adjusting method used
System, so based on the Coal Injection Rate at BF adjusting method described in the embodiment of the present invention, those skilled in the art's energy
The specific embodiment and its various change form of the system of solution the present embodiment much of that, so how to be realized for the system herein
Method in the embodiment of the present invention is no longer discussed in detail.As long as those skilled in the art implement blast furnace in the embodiment of the present invention
System used by coal ejection ratio adjusting method belongs to the range of the invention to be protected.
One or more embodiment provided in an embodiment of the present invention, at least has the following technical effect that or advantage：
Due to true according to calorific capacity and coke calorific capacity before blast furnace air outlet of the coal injection before blast furnace air outlet
Determine the replacement ratio of coal injection；It is true according to the replacement ratio of the button water price lattice of coal injection, the procurement price of coke and coal injection
Determine the potential economic value of coal injection；If the potential economic value of coal injection is more than the first default economic threshold, height-regulating is directed to
When the coal ejection ratio of previous blast furnace process；If the potential economic value of coal injection is less than the second default economic threshold, turns down and be directed to
When the coal ejection ratio of previous blast furnace process, the second default economic threshold is less than or equal to the first default economic threshold, so as to establish
Substitutional relation between the used product-coke substituted of coal dust and coal dust, and the purchasing price also with institute substitute products-coke
Lattice are linked up with, and so as to the economy of more accurate evaluation pulverized coal injection in blast furnace, and determine that coal ejection ratio provides as blast furnace process
Qualitative foundation can be that blast furnace process improves more accurately coal powder blowing amount so as to accurately adjust coal ejection ratio.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then additional changes and modifications may be made to these embodiments.So appended claims be intended to be construed to include it is excellent
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of Coal Injection Rate at BF adjusting method, which is characterized in that including:
It obtains when calorific capacity of the previous blast furnace process institute's coal injection before blast furnace air outlet and described works as previous blast furnace process institute
With calorific capacity of the coke before blast furnace air outlet；
According to calorific capacity and coke calorific capacity before blast furnace air outlet of the coal injection before blast furnace air outlet, really
The replacement ratio of the fixed coal injection；
Obtain the button water price lattice of the coal injection and the procurement price of the coke；
According to the button water price lattice of the coal injection, the procurement price of the coke and the replacement ratio of the coal injection, determine
The potential economic value of the coal injection；
Judge whether the potential economic value of the coal injection is more than the first default economic threshold, if so, being turned up for described
When the coal ejection ratio of previous blast furnace process；
Judge whether the potential economic value of the coal injection is less than the described second default economic threshold, be directed to if so, turning down
It is described when the coal ejection ratio of previous blast furnace process, wherein, the second default economic threshold is less than or equal to the described first default warp
Ji threshold value.
2. Coal Injection Rate at BF adjusting method as described in claim 1, which is characterized in that previous blast furnace process institute is worked as in the acquisition
Calorific capacity of the coal injection before blast furnace air outlet, including：
Detect carbon content, ash content and the sulfur content of the coal injection；
Carbon content, ash content and sulfur content based on the coal injection calculate the coal injection in blast furnace according to equation below
Calorific capacity before air outlet：
Q1=a × C1-b×Ad1-n×S1；
Wherein, Q1For the calorific capacity of the coal injection, C1For the carbon content of the coal injection, Ad1For the coal injection
Content of ashes, S1For the sulfur content of the coal injection, a is carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content coefficient.
3. Coal Injection Rate at BF adjusting method as claimed in claim 2, which is characterized in that described when burnt used in previous blast furnace process
Calorific capacity of the charcoal before blast furnace air outlet, including：
Detect carbon content, ash content and the sulfur content of the coke；
Carbon content, ash content and sulfur content based on the coke calculate the coke before blast furnace air outlet according to equation below
Calorific capacity：
Q2=a × C2-b×Ad2-n×S2；
Wherein, Q2For the calorific capacity of the coke, C2For the carbon content of the coke, Ad2For the content of ashes of the coke, S2For
The sulfur content of the coke, a are carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content coefficient.
4. Coal Injection Rate at BF adjusting method as claimed in claim 3, which is characterized in that the button according to the coal injection
The replacement ratio of water price lattice, the procurement price of the coke and the coal injection determines the potential economic value of the coal injection,
Specially：According to the potential economic value that the formula calculating coal injection is calculated as below：
Wherein, KcoalFor the potential economic value of the coal injection, PcoalThe button water price lattice of the coal injection, PcokeIt is described
The procurement price of coke, Q1For the calorific capacity of the coal injection, Q2Calorific capacity for the coke.
5. the Coal Injection Rate at BF adjusting method as described in any one of claim 1-4, which is characterized in that described to be turned up for institute
The coal ejection ratio when previous blast furnace process is stated, specially：
Determine that the previous coal ejection ratio of working as corresponding to the potential economic value of the coal injection is turned up based on the first predetermined linear relationship
Amount, wherein, the first predetermined linear relationship linearly increases for coal ejection ratio height-regulating amount with the increase of potential economic value；
With described when previous coal ejection ratio height-regulating amount, for described when the coal ejection ratio of previous blast furnace process is turned up.
6. the Coal Injection Rate at BF adjusting method as described in any one of claim 1-4, which is characterized in that described to turn down for institute
The coal ejection ratio when previous blast furnace process is stated, including：
Based on the second predetermined linear relationship determine corresponding to the potential economic value of the coal injection when previous coal ejection ratio is turned down
Amount, wherein, second linear relationship linearly increases for the coal ejection ratio amount of turning down with the reduction of potential economic value；
With described when the previous coal ejection ratio amount of turning down, for described when the coal ejection ratio of previous blast furnace process is turned down.
7. the Coal Injection Rate at BF adjusting method as described in any one of claim 1-4, which is characterized in that described to obtain the spray
The button water price lattice of coal dust and the procurement price of the coke are blown, including：
The procurement price of the coal injection and the procurement price of the coke are obtained from database；
Detect the water content of the coal injection；
The water content of procurement price and the coal injection based on the coal injection calculates the injection according to equation below
The button water price lattice of coal dust：
Pcoal=Pbuy÷(1-Mt)；
Wherein, PcoalThe button water price lattice of the coal injection, PbuyFor the procurement price of the coal injection, MtFor the injection coal
The water content of powder.
8. a kind of Coal Injection Rate at BF regulating system, which is characterized in that including:
Calorific capacity obtaining unit, for obtaining when calorific capacity of the previous blast furnace process institute's coal injection before blast furnace air outlet and
It is described to work as calorific capacity of the coke before blast furnace air outlet used in previous blast furnace process；
Replacement ratio determination unit, for according to calorific capacity of the coal injection before blast furnace air outlet and the coke in blast furnace
Calorific capacity before air outlet determines the replacement ratio of the coal injection；
Price obtaining unit, for obtaining the procurement price of the button water price lattice of the coal injection and the coke；
Economic value determination unit, for button water price lattice, the procurement price of the coke and the spray according to the coal injection
The replacement ratio of coal dust is blown, determines the potential economic value of the coal injection；
Unit is turned up in coal ejection ratio, for judging whether the potential economic value of the coal injection is more than the first default economic threshold,
If so, it is turned up for the coal ejection ratio for working as previous blast furnace process；
Coal ejection ratio turns down unit, and economic threshold is preset for judging whether the potential economic value of the coal injection is less than described second
Value, if so, turn down for the coal ejection ratio for working as previous blast furnace process, wherein, the second default economic threshold be less than or
Equal to the described first default economic threshold.
9. Coal Injection Rate at BF regulating system as claimed in claim 8, which is characterized in that the calorific capacity obtaining unit, specifically
For：
Detect carbon content, ash content and the sulfur content of the coal injection；
Carbon content, ash content and sulfur content based on the coal injection calculate the coal injection in blast furnace according to equation below
Calorific capacity before air outlet：
Q1=a × C1-b×Ad1-n×S1；
Wherein, Q1For the calorific capacity of the coal injection, C1For the carbon content of the coal injection, Ad1For the coal injection
Content of ashes, S1For the sulfur content of the coal injection, a is carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content coefficient.
10. Coal Injection Rate at BF regulating system as claimed in claim 8, which is characterized in that the calorific capacity obtaining unit also has
Body is used for：
Detect carbon content, ash content and the sulfur content of the coke；
Carbon content, ash content and sulfur content based on the coke calculate the coke before blast furnace air outlet according to equation below
Calorific capacity：
Q2=a × C2-b×Ad2-n×S2；
Wherein, Q2For the calorific capacity of the coke, C2For the carbon content of the coke, Ad2For the content of ashes of the coke, S2For
The sulfur content of the coke, a are carbon concentration coefficient, and b is ash content coefficient, and n is sulfur content coefficient.
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| CN110592298A (en) * | 2019-09-09 | 2019-12-20 | 新兴铸管股份有限公司 | Method for measuring and calculating coal injection ratio of blast furnace under certain smelting conditions and coal injection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040035467A (en) * | 2002-10-22 | 2004-04-29 | 주식회사 포스코 | Estimation method of the replacement ratio during the pulverized coal injection operation |
| CN103952503A (en) * | 2014-05-15 | 2014-07-30 | 北京科技大学 | Establishment method of blast-furnace injected pulverized coal cost performance evaluation model |
| CN104152613A (en) * | 2014-08-26 | 2014-11-19 | 四川德胜集团钒钛有限公司 | Comparative method and system of coke metallurgical effect |
| CN104915746A (en) * | 2014-10-21 | 2015-09-16 | 安波 | Purchase before ironmaking and molten iron cost integration management system |
| CN107609207A (en) * | 2017-07-24 | 2018-01-19 | 山西太钢不锈钢股份有限公司 | The computational methods of calorific capacity of the coal dust in blast furnace |
-
2018
- 2018-03-07 CN CN201810187416.7A patent/CN108265142B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040035467A (en) * | 2002-10-22 | 2004-04-29 | 주식회사 포스코 | Estimation method of the replacement ratio during the pulverized coal injection operation |
| CN103952503A (en) * | 2014-05-15 | 2014-07-30 | 北京科技大学 | Establishment method of blast-furnace injected pulverized coal cost performance evaluation model |
| CN104152613A (en) * | 2014-08-26 | 2014-11-19 | 四川德胜集团钒钛有限公司 | Comparative method and system of coke metallurgical effect |
| CN104915746A (en) * | 2014-10-21 | 2015-09-16 | 安波 | Purchase before ironmaking and molten iron cost integration management system |
| CN107609207A (en) * | 2017-07-24 | 2018-01-19 | 山西太钢不锈钢股份有限公司 | The computational methods of calorific capacity of the coal dust in blast furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592298A (en) * | 2019-09-09 | 2019-12-20 | 新兴铸管股份有限公司 | Method for measuring and calculating coal injection ratio of blast furnace under certain smelting conditions and coal injection method |
| CN110592298B (en) * | 2019-09-09 | 2021-07-13 | 新兴铸管股份有限公司 | Method for measuring and calculating coal injection ratio of blast furnace under certain smelting conditions and coal injection method |
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