CN109086949A - Blast furnace gas occurrence quantity and its calorific value prediction technique based on the variation of coal gas composition - Google Patents
Blast furnace gas occurrence quantity and its calorific value prediction technique based on the variation of coal gas composition Download PDFInfo
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- 239000003034 coal gas Substances 0.000 title claims abstract description 45
- 239000000203 mixture Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 116
- 239000001301 oxygen Substances 0.000 claims abstract description 27
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims abstract description 9
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 239000003245 coal Substances 0.000 claims description 33
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 238000012937 correction Methods 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 9
- 230000007774 longterm Effects 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 3
- 239000012159 carrier gas Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000611 regression analysis Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000000714 time series forecasting Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Abstract
The present invention provides a kind of blast furnace gas occurrence quantity and its calorific value prediction technique based on the variation of coal gas composition, gas composition analyzer is set after gas gravity dust arrester for blast furnace or bag-type dust collector, by carrying out on-line analysis to the top gas composition in blast furnace production process, simultaneously with blast furnace gas composition and blast furnace air amount, Rich Oxygen Amount is primary variables, on the basis of N2 EQUILIBRIUM CALCULATION FOR PROCESS value in blast furnace air and coal gas, the blast furnace gas occurrence quantity and its calorific value of gas generated in look-ahead iron-making production, (>=95%) blast furnace gas occurrence quantity and its calorific value of gas can be predicted in high precision by this method, to realize that enterprise's coal gas dynamically optimized scheduling and downstream blast furnace coal gas user have established technical foundation to the detection of calorific value of gas and application；To the release of enterprise's coal gas zero is realized, downstream coal gas user regulates and controls air-fuel ratio online to play a significant role.
Description
Technical field
The present invention relates to technical field of steel production, in particular to a kind of blast furnace gas based on the variation of coal gas composition occurs
Amount and its calorific value prediction technique.
Background technique
Coal gas is the mostly important secondary energy sources of iron and steel enterprise, is " blood circulation " system that iron and steel enterprise depends on for existence,
The height of coal gas utilization efficiency directly determines the level of iron and steel enterprise's using energy source, accomplishes that " zero release " is each steel enterprise
The final goal of industry gas pipe.The basis for realizing the release of coal gas zero is exactly the dynamic equilibrium scheduling of coal gas, guarantees each period
The occurrence quantity of coal gas is consistent with usage amount.The purpose of gas balance scheduling, is exactly the coal gas that coal gas occurs in future time period
Amount and user's consumption predict, by adjusting coal gas generating apparatus and using equipment (containing buffering equipment) operating parameter,
Realize the balance of future time period coal gas.But since the factor for influencing coal resource is numerous and extremely complex, prediction result is difficult
To reach the required required precision of coal gas dynamic balancing scheduling.
Coal gas prediction generally uses two methods.First is that time series forecasting, it is the foundation principle of continuity, only full
The assumed condition of foot " being in this way, being in the future also so in the past ", could predict its future with historical data, once this hypothesis
Condition is invalid, and often deviation is larger for prediction result.Second is that causality predicted method, it is former according to " causality " prediction
Reason, the only preceding topic condition of " reason determination result " are set up, could (function closes by the deterministic dependence established between correlated variables
System) or uncertainty relationship (correlativity, such as data regression analysis, artificial neural network method) predict its future；But
Due to the predicted impact factor of blast furnace gas occurrence quantity and its calorific value it is numerous (such as: ratio of putting coke into furnace, coal ejection ratio, nut coke ratio, hot wind
Temperature, the blow rate required, oxygen enrichment percentage, blast furnace operating etc.), and correlativity is unintelligible, incomplete, the data inaccuracy of acquisition data etc., makes
It is difficult to meet production actual needs at precision of prediction.There is shortcoming in two kinds of prediction techniques, solve up for further investigation.This hair
Bright patent uses based on " cause and effect " Relationship Prediction, takes into account time series, catches analysis of blast furnace gas ingredient and its blast furnace air amount, richness
The big influence factor of oxygen rate three, establishes blast furnace gas occurrence quantity and its calorific value prediction model, can high-precision forecast future blast furnace gas
Occurrence quantity and its calorific value, to realize that industrial application establishes technical foundation.
Summary of the invention
In order to solve the problems, such as described in background technique, the present invention provides a kind of blast furnace gas hair based on the variation of coal gas composition
Raw amount and its calorific value prediction technique, using blast furnace gas composition and blast furnace air amount, Rich Oxygen Amount as primary variables, with blast furnace air with
In coal gas on the basis of N2 EQUILIBRIUM CALCULATION FOR PROCESS value, the blast furnace gas occurrence quantity and its coal gas generated in look-ahead iron-making production is warm
Value, to realize that iron and steel enterprise's dynamic coal gas Optimized Operation provides technical support.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of blast furnace gas occurrence quantity and its calorific value prediction technique based on the variation of coal gas composition, includes the following steps:
Step 1: gas composition analyzer is arranged after gas gravity dust arrester for blast furnace or bag-type dust collector, by right
Top gas composition in blast furnace production process carries out on-line analysis, including N2, CO, H2, CH4 gas in analysis coal gas
Volumn concentration, wherein N2 percentage composition NM；
Step 2: determining blast furnace air amount VG, Rich Oxygen Amount VO2And Coal Injection Amount into BF Mf；
Step 3: coal resource prediction model calculates:
(1) single seat blast furnace gas prediction of emergence size model are as follows:
Vf(t)=[NG(t)/NM(t)]×[KVG(t)+V O2(t)+Vn2(t)] the t ∈ production status moment
Vf(t)=0 t ∈ damping down or blowing out state moment
Wherein: Vn2(t)=Mf (t)/a
In formula: VfIt (t) is the blast furnace gas occurrence quantity (m under t moment blast fumance or damping down operating condition3/min)；
NGIt (t) is the nitrogen percentage composition in blast furnace air under t moment blast fumance working condition；
NMIt (t) is the nitrogen percentage composition in t moment blast furnace gas；
K is the blast furnace air quantity correction coefficient under the conditions of blast furnace difference production status, wherein (0.7~1.0) K=；
VGIt (t) is the blow rate required (m under t moment blast fumance working condition3/min)；
VO2It (t) is the Rich Oxygen Amount (m under t moment blast fumance working condition3/min)；
Vn2It (t) is nitrogen amount (m entrained by the carrier gas of t moment pulverized coal injection3/min)；
Mf (t) is t moment Coal Injection Amount into BF (kg/min)；
A is that t moment pulverized coal injection conveys solid-gas ratio (30~40kg/m3)；
Wherein: NG(t)=[0.79 × VG(t)+Vn2(t)]/[VG(t)+VO2(t)+Vn2(t)]；
(2) Building N blast furnace gas prediction of emergence size model are as follows:
In formula: VfzIt (t) is the total coal resource (m of t moment n seat height furnace3/min)；
Vf(t)IFor t moment the i-th seat height producer gas occurrence quantity (m3/min)；
Step 4: the calculating of blast furnace gas calorific value prediction model includes:
(1) single seat blast furnace gas calorific value prediction model are as follows:
QD(t)=126.44VCO(t)+107.94VH2(t)+359.06VCH4(t)
In formula: QDIt (t) is t moment blast furnace gas calorific value (Kj/Nm3)；
VCO(t)、VH2(t)、VCH4It (t) is respectively CO, H in t moment blast furnace gas2、CH4Gas volume percentage composition (%)；
(2) calorific value prediction model after the grid-connected mixing of Building N blast furnace gas are as follows:
In formula: QhIt (t) is calorific value (Kj/ after the grid-connected mixing of n seat height producer gasNm3)；
Vf(t)iFor t moment the i-th seat height producer gas occurrence quantity (m3/min)；
VfzIt (t) is the total coal resource (m of t moment n seat height furnace3/min)；
QD(t)iFor i-th blast furnace gas calorific value (Kj/ of t momentNm3)。
The prediction technique includes long-term forecast and short-term forecast；
(1) long-term forecast described in is according to the production plan of blast furnace, Plant maintenance plan in time span of forecast, determines that blast furnace is raw
Operating condition and blast furnace air amount and gas composition progress tentative prediction according to first 24 hours are produced, at this point, in the step two
Blast furnace air amount VG, Rich Oxygen Amount VO2And Coal Injection Amount into BF Mf (calculates the N2 amount V carried by solid-gas ration2) according to the production meter of blast furnace
Table is drawn to provide；
(2) short-term forecast described in is the blast furnace air amount V detected according to real-time onlineG, Rich Oxygen Amount VO2And pulverized coal injection
The prediction result that amount Mf is obtained；The N2 amount V carried is calculated by solid-gas ration2；
(3) according to the collected blast furnace air amount of previous cycle in short-term forecast (t-1, t period), Rich Oxygen Amount, coal gas at
The data divided carry out dynamic corrections to long-term forecast value, form the final prediction of next predetermined period (t, t+1 period).
It is demarcated based on the historical data changed to blast furnace difference operating condition, blast furnace air amount and its coal gas composition, described in determination
Blast fumance working condition under blast furnace air quantity correction coefficient K, blast furnace difference operating condition includes: that nominal situation and hot-blast stove change
Furnace, checking, multiple wind, damping down operating condition.
Compared with prior art, the beneficial effects of the present invention are:
1, this patent provides the calculating and prediction technique of a kind of blast furnace gas occurrence quantity and its calorific value of gas.With blast furnace coal
Gas composition and blast furnace air amount, Rich Oxygen Amount are that primary variables is passed through on the basis of N2 EQUILIBRIUM CALCULATION FOR PROCESS value in blast furnace air and coal gas
This method (>=95%) can predict blast furnace gas occurrence quantity and its calorific value of gas in high precision, to realize enterprise's coal gas dynamic optimization tune
Degree and downstream blast furnace coal gas user have established technical foundation to the detection and application of calorific value of gas；Realization enterprise's coal gas zero is put
It dissipates, downstream coal gas user regulates and controls air-fuel ratio online to play a significant role.
2, the flow-through orifice penalty coefficient of the amendment acquisition blast furnace gas amount of actually occurring, makes blast furnace gas occurrence quantity model meter
Calculation value is consistent with actually detected value.
Detailed description of the invention
Fig. 1 is blast furnace system structure chart of the invention.
In figure: 1- blast furnace, 2- coal gas down-comer, 3- gravitational precipitator, 4- bag-type dust collector, the analysis of 5- gas composition
Instrument, 6-TRT generating set, 7- bypass valve group, the total gas flow orifice plate of 8-, 9- gaspipe network flow-through orifice, 10- gas fluid in blast furnace
Orifice, 11- blast furnace gas pipeline network, 12- gas regulator, 13- hot-blast stove, 14- combustion fan, 15- air control valve, 16-
Chimney valve, 17- chimney, 18- electric blower, 19- air mass flow orifice plate, 20- oxygen pipe network, 21- oxygen flow orifice plate, 22-
Cold blast sliding valve, 23- hot-blast valve, 24- cold wind charge valve, 25- cold flow orifice plate, the big lock of 26- cold wind, 27- gas stop valve 1,28-
Gas stop valve 2,29- bleeding valve, 30- air blower diffusion valve, 31- exhaust valve, 32- ash-valve 1,33- ash-valve 2,34- spray
Coal flowmeter.
Specific embodiment
Specific embodiment provided by the invention is described in detail below in conjunction with attached drawing.
As shown in Figure 1, the blast furnace gas that blast furnace (1) occurs, enters gravitational precipitator (3) through raw coke oven gas down-comer (2), warp
After bag filter (4) refined dedusting, by gas composition analyzer (5), into TRT generating set (6) or valve group (7) are bypassed,
After total gas flow orifice plate (8), blast furnace gas pipeline network (11) is sent to by gas flow orifice plate (9) respectively and passes through coal gas
Blast furnace gas is sent into hot-blast stove (13) by gas regulator (12) by flow-through orifice (10)；In main combustion period, air is by combustion-supporting
Blower (14) is sent into hot-blast stove (13) through air control valve (15), and burning waste gas enters chimney (17) through chimney valve (16)；It is sending
Wind phase, the cold air that electric blower (18) generates are passed through through air mass flow orifice plate (19) with the oxygen that oxygen pipe network (20) are sent into
Oxygen flow orifice plate (21) mixes afterwards, is sent into hot-blast stove (13) through cold blast sliding valve (22), the hot wind after preheating is sent through hot-blast valve (23)
Enter blast furnace (1)；Cold wind charge valve (24) are opened changing the furnace period and (switching on air from main combustion period), inflate cold wind through flow-through orifice
(25) hot-blast stove (13) is inflated, when furnace pressure and regulation pressure balance, turns off cold wind charge valve (24), opens
Cold blast sliding valve (22) enters on air.
A kind of blast furnace gas occurrence quantity and its calorific value prediction technique based on the variation of coal gas composition, includes the following steps:
Step 1: gas composition analyzer is arranged after gas gravity dust arrester for blast furnace or bag-type dust collector, by right
Top gas composition in blast furnace production process carries out on-line analysis, including N2, CO, H2, CH4 gas in analysis coal gas
Volumn concentration, wherein N2 percentage composition NM；
Step 2: determining blast furnace air amount VG, Rich Oxygen Amount VO2And Coal Injection Amount into BF Mf；
Step 3: coal resource prediction model calculates:
(1) single seat blast furnace gas prediction of emergence size model are as follows:
Vf(t)=[NG(t)/NM(t)]×[KVG(t)+VO2(t)+Vn2(t)] the t ∈ production status moment
Vf(t)=0 t ∈ damping down or blowing out state moment
Wherein: Vn2(t)=Mf (t)/a
In formula: VfIt (t) is the blast furnace gas occurrence quantity (m under t moment blast fumance or damping down operating condition3/min)；
NGIt (t) is the nitrogen percentage composition in blast furnace air under t moment blast fumance working condition；
NMIt (t) is the nitrogen percentage composition in t moment blast furnace gas；
K is the blast furnace air quantity correction coefficient under the conditions of blast furnace difference production status, wherein (0.7~1.0) K=；
VGIt (t) is the blow rate required (m under t moment blast fumance working condition3/min)；
VO2It (t) is the Rich Oxygen Amount (m under t moment blast fumance working condition3/min)；
Vn2It (t) is nitrogen amount (m entrained by the carrier gas of t moment pulverized coal injection3/min)；
Mf (t) is t moment Coal Injection Amount into BF (kg/min)；
A is that t moment pulverized coal injection conveys solid-gas ratio (30~40kg/m3)；
Wherein: NG(t)=[0.79 × VG(t)+Vn2(t)]/[VG(t)+VO2(t)+Vn2(t)]；
(2) Building N blast furnace gas prediction of emergence size model are as follows:
In formula: VfzIt (t) is the total coal resource (m of t moment n seat height furnace3/min)；
Vf(t)IFor t moment the i-th seat height producer gas occurrence quantity (m3/min)；
Step 4: the calculating of blast furnace gas calorific value prediction model includes:
(1) single seat blast furnace gas calorific value prediction model are as follows:
QD(t)=126.44VCO(t)+107.94VH2(t)+359.06VCH4(t)
In formula: QDIt (t) is t moment blast furnace gas calorific value (Kj/Nm3)；
VCO(t)、VH2(t)、VCH4It (t) is respectively CO, H in t moment blast furnace gas2、CH4Gas volume percentage composition (%)；
(2) calorific value prediction model after the grid-connected mixing of Building N blast furnace gas are as follows:
In formula: QhIt (t) is calorific value (Kj/ after the grid-connected mixing of n seat height producer gasNm3)；
Vf(t)iFor t moment the i-th seat height producer gas occurrence quantity (m3/min)；
VfzIt (t) is the total coal resource (m of t moment n seat height furnace3/min)；
QD(t)iFor i-th blast furnace gas calorific value (Kj/ of t momentNm3)。
The prediction technique includes long-term forecast and short-term forecast；
(1) long-term forecast described in is according to the production plan of blast furnace, Plant maintenance plan in time span of forecast, determines that blast furnace is raw
Operating condition and blast furnace air amount and gas composition progress tentative prediction according to first 24 hours are produced, at this point, in the step two
Blast furnace air amount VG, Rich Oxygen Amount VO2And Coal Injection Amount into BF Mf (calculates the N2 amount V carried by solid-gas ration2) according to the production meter of blast furnace
Table is drawn to provide；
(2) short-term forecast described in is previous cycle (t-1, t period) the blast furnace air amount V detected according to real-time onlineG、
Rich Oxygen Amount VO2And Coal Injection Amount into BF Mf (calculates the N2 amount V carried by solid-gas ration2) prediction result that obtains.
(3) according to the collected blast furnace air amount of previous cycle in short-term forecast (t-1, t period), Rich Oxygen Amount, coal gas at
The data divided carry out dynamic corrections to long-term forecast value, form the final prediction of next predetermined period (t, t+1 period).
It is demarcated based on the historical data changed to blast furnace difference operating condition, blast furnace air amount and its coal gas composition, described in determination
Blast fumance working condition under blast furnace air quantity correction coefficient K, blast furnace difference operating condition includes: that nominal situation and hot-blast stove change
Furnace, checking, multiple wind, damping down operating condition.
In Fig. 1, gas composition analyzer (5) is used to carry out the top gas composition in blast furnace production process online
Analysis；Total gas flow orifice plate (8) is used for the total coal resource of on-line measurement, and air mass flow orifice plate (19) is high for on-line measurement
The furnace blow rate required, oxygen flow orifice plate (21) is for measuring Rich Oxygen Amount, and cold flow orifice plate (25) is for measuring cold flow.In heat
Wind furnace switchs to the changing during furnace operate of air-supply by burning, need to be from the practical blow rate required of blast furnace to the part cold blast rate of hot-blast stove inflation
Middle deduction.Coal powder injection flowmeter (34) is for measuring Coal Injection Amount into BF.
Above embodiments are implemented under the premise of the technical scheme of the present invention, give detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to the above embodiments.Method therefor is such as without spy in above-described embodiment
Not mentionleting alone bright is conventional method.
Claims (3)
1. a kind of blast furnace gas occurrence quantity and its calorific value prediction technique based on the variation of coal gas composition, which is characterized in that including such as
Lower step:
Step 1: gas composition analyzer is arranged after gas gravity dust arrester for blast furnace or bag-type dust collector, by blast furnace
Top gas composition in production process carries out on-line analysis, the body including N2, CO, H2, CH4 gas in analysis coal gas
Percentage composition is accumulated, wherein N2 percentage composition NM；
Step 2: determining blast furnace air amount VG, Rich Oxygen Amount VO2And Coal Injection Amount into BF Mf；
Step 3: coal resource prediction model calculates:
(1) single seat blast furnace gas prediction of emergence size model are as follows:
Vf(t)=[NG(t)/NM(t)]×[KVG(t)+VO2(t)+Vn2(t)] the t ∈ production status moment
Vf(t)=0 t ∈ damping down or blowing out state moment
Wherein: Vn2(t)=Mf (t)/a
In formula: VfIt (t) is the blast furnace gas occurrence quantity (m under t moment blast fumance or damping down operating condition3/min)；
NGIt (t) is the nitrogen percentage composition in blast furnace air under t moment blast fumance working condition；
NMIt (t) is the nitrogen percentage composition in t moment blast furnace gas；
K is the blast furnace air quantity correction coefficient under the conditions of blast furnace difference production status, wherein K=0.7~1.0；
VGIt (t) is the blow rate required (m under t moment blast fumance working condition3/min)；
VO2It (t) is the Rich Oxygen Amount (m under t moment blast fumance working condition3/min)；
Vn2It (t) is nitrogen amount (m entrained by the carrier gas of t moment pulverized coal injection3/min)；
Mf (t) is t moment Coal Injection Amount into BF (kg/min)；
A is that t moment pulverized coal injection conveys solid-gas ratio (30~40kg/m3)；
Wherein: NG(t)=[0.79 × VG(t)+Vn2(t)]/[VG(t)+VO2(t)+Vn2(t)]；
(2) Building N blast furnace gas prediction of emergence size model are as follows:
In formula: VfzIt (t) is the total coal resource (m of t moment n seat height furnace3/min)；
Vf(t)IFor t moment the i-th seat height producer gas occurrence quantity (m3/min)；
Step 4: the calculating of blast furnace gas calorific value prediction model includes:
(1) single seat blast furnace gas calorific value prediction model are as follows:
QD(t)=126.44VCO(t)+107.94VH2(t)+359.06VCH4(t)
In formula: QDIt (t) is t moment blast furnace gas calorific value (Kj/Nm3)；
VCO(t)、VH2(t)、VCH4It (t) is respectively CO, H in t moment blast furnace gas2、CH4Gas volume percentage composition (%)；
(2) calorific value prediction model after the grid-connected mixing of Building N blast furnace gas are as follows:
In formula: QhIt (t) is calorific value (Kj/ after the grid-connected mixing of n seat height producer gasNm3)；
Vf(t)iFor t moment the i-th seat height producer gas occurrence quantity (m3/min)；
VfzIt (t) is the total coal resource (m of t moment n seat height furnace3/min)；
QD(t)iFor i-th blast furnace gas calorific value (Kj/ of t momentNm3)。
2. a kind of blast furnace gas occurrence quantity and its calorific value prediction side based on the variation of coal gas composition according to claim 1
Method, which is characterized in that the prediction technique includes long-term forecast and short-term forecast；
(1) long-term forecast described in is according to the production plan of blast furnace in time span of forecast, Plant maintenance plan, determines blast fumance work
Condition and blast furnace air amount according to first 24 hours and gas composition carry out tentative prediction, at this point, the blast furnace in the step two
Blow rate required VG, Rich Oxygen Amount VO2And Coal Injection Amount into BF Mf is provided according to the manufacturing plan sheet of blast furnace；
(2) short-term forecast described in is the blast furnace air amount V detected according to real-time onlineG, Rich Oxygen Amount VO2And Coal Injection Amount into BF Mf
The prediction result obtained；
(3) according to the collected blast furnace air amount of previous cycle in short-term forecast, Rich Oxygen Amount, the data of gas composition to long-term pre-
Measured value carries out dynamic corrections, forms the final prediction of next predetermined period.
3. a kind of blast furnace gas occurrence quantity and its calorific value prediction side based on the variation of coal gas composition according to claim 1
Method, which is characterized in that based on the historical data calibration changed to blast furnace difference operating condition, blast furnace air amount and its coal gas composition, really
Blast furnace air quantity correction coefficient K under the fixed blast fumance working condition, blast furnace difference operating condition includes: nominal situation and heat
Wind furnace changes furnace, checking, multiple wind, damping down operating condition.
Priority Applications (1)
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