CN104806995B - Method for optimizing boiler operation under condition of varied coal quality - Google Patents
Method for optimizing boiler operation under condition of varied coal quality Download PDFInfo
- Publication number
- CN104806995B CN104806995B CN201410219420.9A CN201410219420A CN104806995B CN 104806995 B CN104806995 B CN 104806995B CN 201410219420 A CN201410219420 A CN 201410219420A CN 104806995 B CN104806995 B CN 104806995B
- Authority
- CN
- China
- Prior art keywords
- boiler
- coal
- cfd
- simulation
- furnace
- 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.)
- Active
Links
- 239000003245 coal Substances 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004088 simulation Methods 0.000 claims abstract description 29
- 238000004364 calculation method Methods 0.000 claims abstract description 23
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 7
- 231100000719 pollutant Toxicity 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000011056 performance test Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 34
- 230000008859 change Effects 0.000 claims description 8
- 235000019504 cigarettes Nutrition 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 9
- 239000000779 smoke Substances 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 11
- 238000005457 optimization Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000010883 coal ash Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 239000002956 ash Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003947 neutron activation analysis Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Regulation And Control Of Combustion (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention relates to a method for optimizing boiler operation under the condition of varied coal quality. The method includes the steps: firstly, building a CFD (computational fluid dynamics) simulation and rear smoke channel thermal checking calculation coupling model: (1) acquiring key performance parameters of a certain coal type burnt by a certain coal burning boiler under a certain load based on performance test for the coal burning boiler; (2) performing CFD simulation for a boiler furnace under the same working condition according to test data acquired by the step (1), and building an accurate CFD calculation model; (3) finishing building the CFD simulation and rear smoke channel thermal checking calculation coupling model; secondly, inputting new coal quality and operation parameters to the built accurate CFD calculation model when the burnt coal quality or operation parameters of the boiler are changed, and performing an appropriate amount of simulation calculation and thermal calculation to obtain the generation condition of combustion and pollutants of the furnace and the temperature condition of a heated surface under new conditions, and accordingly selecting an optimal boiler operation mode. CFD simulation and rear smoke channel thermal checking calculation are coupled by the method capable of forecasting and guiding optimized boiler operation.
Description
Technical field
The present invention relates to a kind of method for instructing boiler optimization to run in the case of changeable for ature of coal, by by CFD numerical value
Simulation intercouples with boiler back end ductwork heating power calculation and check, obtains a kind of for instructing the boiler in the case of ature of coal is changeable
The method for optimizing operation.
Technical background
All it is all the time this using energy source structures shape China based on coal during the conventional energy resource of China is utilized
Based on coal, current coal is produced and disappeared in the primary energy of China for energy production structure, consumption structure and power supply architecture
More than 70% share has been accounted in expense, and has been expected in the period of considerably long, China power generation energy resource constitute will continue to keep with
General layout based on coal electricity.
Generally, for station boiler, its design coal or with design coal relatively is preferably used
Coal, to ensure that flameholding and each parameter run in normal range (NR).For many years, although thermal power generation occupies me always
The main status of state's supply of electric power, but the boiler of power plant overwhelming majority is unable to fuel design coal, because China's electricity coal resource
The equilibrium of supply and demand constantly change, the electricity coal supply of electricity power enterprise becomes more diversified, and due to the limitation of objective condition, power plant
The ature of coal bought cannot guarantee that long-term stability, cause electric ature of coal amount fluctuating range to increase, and ature of coal polytropy turns into fire
Electric industry more distinct issues.
It is the phenomenon of generally existing in China's thermal power industry because ature of coal is changeable, thus also brings boiler operatiopn
A series of problem in journey.In the design process of boiler, the selection of some important parameters, such as volume heat load, burning
Equal and design coal the Slagging Characteristics such as device region thermic load, Thermal load of cross-section have critically important relation.It is low according to design coal
Position caloric value and Slagging Characteristics determine after these parameters that the structure of boiler also determines substantially.When ature of coal changes, if with
The ature of coal performance difference of design coal is larger, and combustion position does not often reach optimum state to boiler in the process of running, influences pot
The efficiency and safety problem of stove.
Coking is the phenomenon of current power plant and industrial circle boiler generally existing, is used to judge whether coal is easy in China
The method of coking is the softening temperature of coal ash（ST）, Chinese scholar is according to 250 kinds of Slagging Characteristics statistics discoveries of coal ash：Work as coal
Grey ST>At 1390 DEG C, this coal is difficult slagging scorification；As coal ash ST<At 1260 DEG C, belong to clinker(ing) coal kind；When 1260 DEG C of coal ash<ST
<1390 DEG C, then belong to medium slagging scorification coal.If the coal that boiler is used differs larger with the ST of design coal, it is likely that
Cause the coke heavy of boiler, influence the safe operation of boiler.The low-load combustion-stabilizing of boiler be ature of coal it is changeable face another
Problem, when boiler fired coal off-design coal and when tending to using coal inferior, the coal powder ignition in boiler also return it is impacted, can
Can be accomplished by throwing the steady combustion of oil under load higher.
Ature of coal is changeable while influence, after coal off-design coal, boiler operating parameter can be produced on the efficiency of boiler
May have greatly changed, such as ature of coal low heat valve, moisture, the content of ash content are different from design coal can significantly
Influence the calculating fuel quantity and exhaust gas volumn of boiler, theoretical temperature combustion, furnace outlet gas temperature, the heating power of each heating surface to boiler
Parameter and exhaust gas temperature have a significant impact, and then can influence the efficiency of boiler.Research finds, when the total moisture of boiler fired coal
When raising 1%, boiler efficiency can reduce by 0.093%；When ash content increases by 1%, boiler efficiency can decline 0.097%.
Additionally, increasingly paying attention to the problem of environmental pollution that fossil fuel brings with people, general boiler producer can basis
The coal characteristics of design coal select burner, air distribution mode of boiler etc. in the hope of the sulphur that will be generated in fossil fuel combustion process
Oxide, nitrogen oxides are preferably minimized.The difference of the geological conditions of Formed age and coal-forming yet with coal, Coal rank
Sulphur composition and combustion process in fuel type NOx generation amount also have larger difference.Under the changeable situation of ature of coal, only just
Really the upper and lower pivot angle of burner or air distribution of adjustment boiler could preferably control the generation of pollutant.
As can be seen here, the changeable problem brought of boiler fired coal is tackled using certain measure is very necessary, state
Inside and outside scholar has carried out substantial amounts of research to this.CFBB（CFB）Be exactly under the changeable present situation of ature of coal
Arrive quick development, CFB has coal adaptability strong, and temperature is relatively low in burner hearth, the advantages of NOx generation amount is few, and can be with
Desulfurizing agent is added to realize desulfuration in furnace in stove, but the CFB boiler of Large Copacity high parameter is also less at present, more than 600MW's
Unit is still based on coal-powder boiler.
Ature of coal on-line analysis technology is, by the on-line analysis to coal content and characteristic and diagnosis, to realize coal and boiler
The Dynamic Coupling of burning, improves the economy and security of boiler operatiopn, realizes the situation of change according to ature of coal, and it is appropriate to carry out
Firing optimization.It can not only be such that boiler controller system is run under optimal operating mode, effectively improve boiler controller system efficiency, reduce and generate electricity
Coal consumption, the putting into operation of steady combustion, soot blower simultaneously for boiler at low load, the adjustment of fineness of pulverized coal, the raising of coal-grinding engine efficiency and
Realize that optimization operation all has positive directive significance.On-line analysis technology main at present has：Low-energyγ-ray anti-scattering method,
Energetic gamma rays annihilation radiation method, dual energy gamma ray through transmission technique, Neutron activation analysiss, near infrared technology etc..Ature of coal is online
Although analytical technology can instruct the operation of boiler, make boiler being optimal effect more difficult.
The effective measures of the another kind reply changeable problem of ature of coal are to improve as-fired coal matter by coal blending.Because China is bad
The ratio that the storage capacity of matter coal accounts for coal total amount is very big, for the power plant of some burning inferior coals, in order to improve the performance of burning coal
Often adulterate some good coals in colm.The Power Coal Blending Technique of China begins to development, technology from the eighties in last century
On it is also more ripe, but because the ature of coal that power plant uses has unstability, how suitably to be matched somebody with somebody according to boiler performance selection
Coal ratio is also to be developed.
Also there is scholar and studied with numerical simulation software the operation conditions of boiler, as a result show the method pair of numerical simulation
It is a kind of critically important measure in instructing the optimization of boiler to run, but only with the afterbody of the method for boiler of numerical simulation
Flue surface parameter fails to obtain more clearly to describe, the fluid properties of each heating surface, flue gas temperature for operations staff
Degree is also important operational factor.
As fully visible, it is a common problem that China's thermal power industry faces that ature of coal is changeable, how in ature of coal
Instructed under conditions of changeable boiler operatiopn being optimal be problem demanding prompt solution.
The content of the invention
The purpose of the present invention is that a kind of method for optimizing boiler operatiopn in the case of changeable for ature of coal of offer, its be by
CFD simulate and boiler back end ductwork heating power calculation and check be coupled it is a kind of can predict and guide boiler optimization run side
Method.
The technical scheme is that：A kind of method for optimizing boiler operatiopn in the case of changeable for ature of coal, its step is：
The first step：Set up CFD simulation coupled tail flue heating power calculation and check models：Its method includes
（1）, on the basis of performance test is carried out to certain coal-burning boiler, obtain burning of the boiler under certain load
The critical performance parameters of coal；
The critical performance parameters include：Furnace exit temperature, the NOx emission of furnace outlet, boiler each heating surface enter
Export cigarette temperature, flow and import and export vapor (steam) temperature, flow etc.；
（2）, be that experimental data according to obtained by the first step carries out CFD simulations to the boiler furnace under same operating mode, it is determined that
The parameter for carrying out setting adjustment is needed in CFD simulations, until reaching for same load same coal simulation effect and experiment value
Untill coincideing preferably, that is, ensure CFD numerical simulation results with error of test data within 5%.
The main analog result of the CFD includes：Furnace flame center, the temperature field of furnace outlet, furnace outlet
NOx generation amount；
（3）, according to CFD simulations on the premise of it is determined that furnace outlet gas temperature and known boilers heating surface are arranged, carry out pot
The heating power calculation and check of the burner hearth downstream heating surface of stove, while constantly adjustment setting heat transfer parameter, until being heated that heating power is checked
Face import and export cigarette temperature is with the value error measured by experiment within 5%；Completion is set up CFD simulation coupled tail flue heating power and is checked
Computation model；
Second step：When boiler burning coal or operational factor change, only need to be in the base of existing CFD result of calculations
New ature of coal and operational factor is input on plinth, the life of the burning and pollutant of New Terms lower hearth is obtained by carrying out appropriate calculating
Into situation namely furnace outlet gas temperature and NOx discharge；So as to predict the running status of boiler, by being simulated in CFD in change
Become wind powder proportioning, burner to swing up and down to observe boiler operation situation, achieve flameholding and pollutant emission and closing
In the range of reason, and then select optimal Boiler Operation.
Beneficial effects of the present invention are：The inventive method has coupled burner hearth CFD burning numerical computations and boiler tail convection current
The respective advantage of heating surface Calculation of Heat Transfer, when more accurate can change ature of coal parameter and operational factor with relatively quick prediction
The running status of boiler, and then optimal Boiler Operation is selected, while realizing the economy and the feature of environmental protection of boiler.
Boiler operatiopn state is predicted under the conditions of the inventive method is changeable to ature of coal, and guiding the optimization of boiler to run has weight
Meaning is wanted, its advantage is summarized as follows：
1. proposed on the basis of this method is tested based on boiler performance, under conditions of ature of coal is changeable, can be quick,
Accurately the running status of prediction boiler, and guides the optimization of boiler to run；
2. this method is by the way of CFD numerical simulation coupled tail flue heating power calculation and checks, for computer
Hardware configuration is less demanding, simple and easy to apply；
This method overcomes heating power calculation and check cannot accurately determine furnace outlet gas temperature and NOx emission and CFD numerical value
Calculating cannot accurately calculate the shortcoming of convection heating surface heat-transfer character, and the CFD numerical computations and downstream convective of hearth combustion are received
The Calculation of Heat Transfer in hot face is combined, such that it is able to accurately more quickly predict exhaust gas temperature, boiler efficiency and pollutant
Discharge, so as to realize ature of coal it is changeable under the conditions of boiler optimization operation.
Brief description of the drawings
Fig. 1 is that embodiment of the present invention CFD simulation coupled tail flues are checked the foundation of Thermodynamic calculating model and use process
Schematic flow diagram.
Specific embodiment
Be below with the π formulas stove of one 330MW of certain power plant as Application Example can with reference to accompanying drawing 1 referring to：This boiler is entering
In the row overhaul stage, in order to reduce exhaust gas temperature and desuperheating water of superheater amount, part low temperature superheater heating surface is reduced, increased province
Coal device heating surface.Based on the boiler performance test before and after this boiler overhaul, transported using optimization boiler proposed by the present invention
Capable method, this method is verified by contrasting the boiler operating parameter before and after overhaul.
The first step, boiler performance test is carried out for this boiler, and 100%BRL bears before overhaul and after overhaul to obtain boiler
The operation characteristic of certain coal that burns under lotus, including：Combustion characteristics in boiler furnace, the NOx emission value of furnace outlet, burner hearth
Outlet temperature, the import and export cigarette temperature of each heating surface of boiler, flow and imports and exports vapor (steam) temperature, flow etc., is shown in Table 1；
Thermal parameter before and after certain power plant 330MW boiler overhauls of table 1.
Second step, experimental data according to early stage carries out CFD simulations, determines the ginseng for needing in CFD simulations to be adjusted
Number（Such as thermal NO x, the arrange parameter of fuel type NOx）, until reaching for same load same coal simulation effect and reality
Test untill value coincide preferably, then CFD is completed to the simulation of burner hearth part, the available analog result under 300MW loads
Including：1070 DEG C of furnace outlet gas temperature, furnace flame center, burner region NOx concentration 780ppm (mg/m), burner hearth
Outlet gas temperature windage, furnace outlet NOx concentration is 756ppm（mg/m³）.
On the premise of 3rd step, the furnace outlet gas temperature simulated according to CFD and known boilers heating surface are arranged, boiler is carried out
Heating power calculation and check in the case where load is tested, tube wall ash fouling coefficient ε, thermal effective coefficient ψ, the amendment also to each heating surface of this process
Coefficient φ etc. is constantly finely tuned, and surface error is heated within 5% until what heating power was checked, then be the heating power of completion back-end ductwork
Calculate, available result is：Each heating surface working medium out temperature, smoke entrance temperature, table 2 is in 220MW loads
Under the result of the test done and the Comparative result obtained using this method；
The test data of table 2. certain boiler of power plant under 220MW is contrasted with CFD result of calculations
4th step, when boiler fired coal changes, ature of coal is changed in CFD simulations and back-end ductwork heating power calculation and check
Parameter can just predict the running status of boiler, can by being simulated in CFD in change wind powder proportioning, burner and swing up and down
Boiler operation situation is observed in measure, and then selects optimal Boiler Operation, while realizing the economy and the feature of environmental protection of boiler.
Claims (1)
1. a kind of method for optimizing boiler operatiopn in the case of changeable for ature of coal, its step is：
The first step：Set up CFD simulation coupled tail flue heating power calculation and check models：Its method includes
（1）, on the basis of performance test is carried out to certain coal-burning boiler, obtain burning coal of the boiler under certain load
Critical performance parameters；
The critical performance parameters include：Furnace exit temperature, the NOx emission value of furnace outlet, the turnover of each heating surface of boiler
Mouth cigarette temperature, flow and import and export vapor (steam) temperature, flow；
（2）, be according to（1）Experimental data obtained by step carries out CFD simulations to the boiler furnace under same operating mode, determines CFD
The parameter for carrying out setting adjustment is needed in simulation, is coincide with experiment value for the same coal simulation effect of same load until reaching
Untill preferably, that is, ensure CFD numerical simulation results with error of test data within 5%；
The main analog result of the CFD includes：Furnace flame center, the temperature field of furnace outlet, furnace outlet NOx lifes
Cheng Liang；
（3）, according to CFD simulations on the premise of it is determined that furnace outlet gas temperature and known boilers heating surface are arranged, carry out boiler
The heating power calculation and check of burner hearth downstream heating surface, while constantly adjustment setting heat transfer parameter, until the heating surface that heating power is checked enters
Outlet cigarette temperature is with the value error measured by experiment within 5%；CFD simulation coupled tail flue heating power calculation and checks are set up in completion
Model；
Second step：When boiler burning coal or operational factor change, only need to be on the basis of existing CFD result of calculations
Input new ature of coal and operational factor, obtain the generation feelings of the burning and pollutant of New Terms lower hearth by carrying out appropriate calculating
Condition namely furnace outlet gas temperature and NOx discharge；So as to predict the running status of boiler, by being simulated in CFD in change wind
Powder proportioning, burner swing up and down to observe boiler operation situation, achieve flameholding and pollutant emission in reasonable model
In enclosing, and then select optimal Boiler Operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410219420.9A CN104806995B (en) | 2014-05-23 | 2014-05-23 | Method for optimizing boiler operation under condition of varied coal quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410219420.9A CN104806995B (en) | 2014-05-23 | 2014-05-23 | Method for optimizing boiler operation under condition of varied coal quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104806995A CN104806995A (en) | 2015-07-29 |
| CN104806995B true CN104806995B (en) | 2017-05-17 |
Family
ID=53692065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410219420.9A Active CN104806995B (en) | 2014-05-23 | 2014-05-23 | Method for optimizing boiler operation under condition of varied coal quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806995B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL3473927T3 (en) * | 2017-10-19 | 2023-05-08 | General Electric Company | Method for operating a steam generation system |
| CN111222685B (en) * | 2019-11-21 | 2022-07-08 | 江苏方天电力技术有限公司 | Boiler wide-load NOx emission concentration prediction method based on model migration |
| CN113074459A (en) * | 2021-03-11 | 2021-07-06 | 国家能源集团新能源技术研究院有限公司 | Boiler control optimization method and system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593914A (en) * | 1979-01-12 | 1980-07-16 | Toshiba Corp | Temperature controller for fluid of boiler |
| CN1164950C (en) * | 2002-03-15 | 2004-09-01 | 山东中实股份有限公司 | Real-time monitor method and device for coal quality of boiler in electric power station |
| JP4993560B2 (en) * | 2006-05-24 | 2012-08-08 | 中国電力株式会社 | Coal type switching method and system for coal fired boiler |
| CN101788155A (en) * | 2010-01-22 | 2010-07-28 | 云南电力试验研究院(集团)有限公司 | Control method for coordination and automatic power generation of coal quality self-adaptive thermal power generating unit |
| CN103345213B (en) * | 2013-06-09 | 2015-09-02 | 华电电力科学研究院 | Fire coal management under the changeable condition of fossil-fired unit ature of coal and combustion strategies optimization method |
-
2014
- 2014-05-23 CN CN201410219420.9A patent/CN104806995B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104806995A (en) | 2015-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Madejski | Numerical study of a large-scale pulverized coal-fired boiler operation using CFD modeling based on the probability density function method | |
| Park et al. | Numerical and experimental investigations on the gas temperature deviation in a large scale, advanced low NOx, tangentially fired pulverized coal boiler | |
| Park et al. | Coupled fluid dynamics and whole plant simulation of coal combustion in a tangentially-fired boiler | |
| Madejski et al. | Calculation methods of steam boiler operation factors under varying operating conditions with the use of computational thermodynamic modeling | |
| CN202101268U (en) | Boiler furnace temperature field distribution control system | |
| CN105276563B (en) | A kind of furnace outlet gas temperature flexible measurement method based on the real-time slagging scorification situation of burner hearth | |
| Yu et al. | Numerical investigation of combustion optimization in a tangential firing boiler considering steam tube overheating | |
| CN105181926A (en) | Heat-balance-based soft sensing method for fire coal calorific value of coal-gas boiler realizing blending combustion of pulverized coal | |
| Jiang et al. | Optimization of separated overfire air to reduce NOX emissions under combustion stability for the retrofit of a 500 MW tangentially pulverized coal boiler | |
| Zhao et al. | Coal-fired utility boiler modelling for advanced economical low-NOx combustion controller design | |
| Yin et al. | Dynamic performance and control strategy modification for coal-fired power unit under coal quality variation | |
| Wang et al. | Mechanism modeling of optimal excess air coefficient for operating in coal fired boiler | |
| CN104806995B (en) | Method for optimizing boiler operation under condition of varied coal quality | |
| Fan et al. | Steam temperature regulation characteristics in a flexible ultra-supercritical boiler with a double reheat cycle based on a cell model | |
| CN106153361A (en) | A kind of steam generator system energy consumption Intelligence Diagnosis and Potentials method and system | |
| Hernik et al. | Numerical research on the impact of changes in the configuration and the location of the over fire air nozzles on the combustion process in the ultra-supercritical BP 680 boiler | |
| Zhou et al. | Numerical analysis and modified thermodynamic calculation methods for the furnace in the 1000 MW supercritical CO2 coal-fired boiler | |
| CN110298502A (en) | Based on the boiler optimum oxygen calculation method that efficiency is optimal | |
| Mo et al. | Analysis on influencing factors and improvement of thermal efficiency of bagasse boilers based on performance test data | |
| Spitz et al. | Firing a sub-bituminous coal in pulverized coal boilers configured for bituminous coals | |
| Hernik et al. | Numerical research of combustion with a minimum boiler load | |
| Song et al. | Effect of stoichiometric ratio of fuel-rich flow on combustion characteristics in a down-fired boiler | |
| Roslyakov et al. | Development of a computer model of a fire-tube hot water boiler, its verification and use in the design process | |
| Wei et al. | Experimental study and simulation analysis of heat and deformation in the water walls of an opposed firing boiler under flexible operating conditions | |
| Wang et al. | Probing of operation economy for coal-fired unit under low loads with two fixed boundary conditions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |