CN106650245A - Method and device for calculating heat transfer coefficient of oxygen-enriched combustion hearth - Google Patents
Method and device for calculating heat transfer coefficient of oxygen-enriched combustion hearth Download PDFInfo
- Publication number
- CN106650245A CN106650245A CN201611128956.5A CN201611128956A CN106650245A CN 106650245 A CN106650245 A CN 106650245A CN 201611128956 A CN201611128956 A CN 201611128956A CN 106650245 A CN106650245 A CN 106650245A
- Authority
- CN
- China
- Prior art keywords
- burner hearth
- oxygen
- coefficient
- atmosphere
- radiative absorption
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Z—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS, NOT OTHERWISE PROVIDED FOR
- G16Z99/00—Subject matter not provided for in other main groups of this subclass
Abstract
The invention relates to the technical field of oxygen-enriched combustion and discloses a method and a device for calculating the heat transfer coefficient of an oxygen-enriched combustion hearth. The method comprises the following steps: correcting a triatomic gas radiation weakening coefficient Kr' under the atmosphere of air combustion, thereby acquiring the triatomic gas radiation weakening coefficient Kr under the atmosphere of oxygen-enriched combustion; calculating a hearth flame emissivity alpha on the basis of the triatomic gas radiation weakening coefficient Kr under the atmosphere of oxygen-enriched combustion; calculating heat absorption capacity Q of the hearth on the basis of the hearth flame emissivity alpha; calculating area H of heated area; calculating a logarithmic temperature difference Delta t; calculating the heat transfer coefficient K of the hearth on the basis of the heat absorption capacity Q of the hearth, the area H of heated area and the logarithmic temperature difference Delta t. According to the method and the device for calculating the heat transfer coefficient of the oxygen-enriched combustion hearth, provided by the invention, the heat transfer coefficient of the oxygen-enriched combustion hearth can be accurately calculated.
Description
Technical field
The present invention relates to oxygen-enriched combustion technology field, in particular it relates to a kind of heat transfer coefficient meter of the burner hearth of oxygen-enriched combusting
Calculate method and device.
Background technology
Oxygen-enriched combustion technology technically has good connection with existing power station combustion system.Oxygen-enriched combustion technology is not
The CO being only easy in recovered flue gas2, moreover it is possible to significantly reduce NO thereinx、SO2With it is granular material discharged.Oxygen-enriched combusting can be real
The integrative coordinated removing of existing pollutant, is that a kind of cleaning fire coal of nearly " zero " discharge utilizes technology, but oxygen-enriched combusting is simultaneously
There is also many problems：Due to the difference of the density of medium, specific heat, diffusion coefficient, radiation characteristic and exhaust gas volumn so that
Flow behavior, pulverized coal flame characteristic, combustion process, diabatic process under oxygen-enriched combusting atmosphere in stove etc. are sent out compared to conventional combustion
Very big change is given birth to.Therefore, the Heat Transfer in Furnace coefficient calculation method and step of the boiler under conventional air atmosphere is no longer fitted
In the calculating of oxygen-enriched combusting operating mode lower hearth heat transfer coefficient, needs are a kind of can be to the heat transfer coefficient of oxygen-enriched combusting operating mode lower hearth
The method and apparatus for being calculated.
The content of the invention
It is an object of the invention to provide the heat transfer coefficient computational methods and device of a kind of burner hearth of oxygen-enriched combusting, with solution
State the problems of the prior art.
To achieve these goals, the present invention provides a kind of heat transfer coefficient computational methods of the burner hearth of oxygen-enriched combusting, wherein,
The method includes：To three atomic gas radiative absorption coefficient K under air burning atmospherer' be modified and obtain oxygen-enriched combusting gas
Three atomic gas radiative absorption coefficient K under atmospherer；Based on three atomic gas radiative absorption coefficient K under oxygen-enriched combusting atmosphererMeter
Calculate furnace flame blackness α；The caloric receptivity Q of burner hearth is calculated based on the furnace flame blackness α；Calculate the area H of heating surface；Calculate
Logarithmic temperature difference △ t；And the area H and logarithmic temperature difference △ t based on the caloric receptivity Q of burner hearth, heating surface calculates the heat transfer system of burner hearth
Number K.
Preferably, using following formula to three atomic gas radiative absorption coefficient K under air burning atmospherer' repaiied
Just obtaining three atomic gas radiative absorption coefficient K under oxygen-enriched combusting atmospherer：
Kr=Kr'-Δ K, wherein,
WhereinFor the partial pressure of vapor,For CO2Partial pressure, F be Net long wave radiation thickness degree.
Preferably, furnace flame blackness α is calculated by following formula：
α=1-e-KPS,
KPS=A × (Kr* γ+Kh*μ+KC*C1*C2) × S,
Wherein, the KPS be the total attraction of combustion product, KrFor three atomic gas radiation falloff system under oxygen-enriched combusting atmosphere
Number；γ is three atomic gas volume shares in flue gas；KhFor soot particle radiative absorption coefficient；μ is quality flying dust concentration；KCFor carbon granules
Radiative absorption coefficient；C1、C2For dimensionless parameter；A is coefficient；S is the radiating layer effective thickness of burner hearth.
Preferably, soot particle radiative absorption coefficient K is calculated by following formulah：
Wherein dhFor grey particle effective diameter, GgFor flue gas mass, VgFor flue gas volume, TOFor flue gas temperature at furnace outlet
Degree.
It is preferably based on the caloric receptivity Q of burner hearth, the area H and logarithmic temperature difference △ t of heating surface and calculates stove by following formula
The mean heat transfer coefficient K of thorax：
Present invention also offers a kind of heat transfer coefficient computing device of the burner hearth of oxygen-enriched combusting, wherein, the device includes：Repair
Positive module, for three atomic gas radiative absorption coefficient K under air burning atmospherer' be modified and obtain oxygen-enriched combusting gas
Three atomic gas radiative absorption coefficient K under atmospherer；First computing module, for based on three atom gas under oxygen-enriched combusting atmosphere
Body radiative absorption coefficient KrCalculate furnace flame blackness α；Second computing module, for being calculated based on the furnace flame blackness α
The caloric receptivity Q of burner hearth；3rd computing module, for calculating the area H of heating surface；4th computing module, for calculating logarithm temperature
Difference △ t；And the 5th computing module, for the area H and logarithmic temperature difference △ t calculating stoves based on the caloric receptivity Q of burner hearth, heating surface
The Coefficient K of thorax.
Preferably, the correcting module utilizes following formula to three atomic gas radiation falloff systems under air burning atmosphere
Number Kr' it is modified the three atomic gas radiative absorption coefficient K obtained under oxygen-enriched combusting atmospherer：
Kr=Kr'-Δ K, wherein,
WhereinFor the partial pressure of vapor,For CO2Partial pressure, F be Net long wave radiation thickness degree.
Preferably, first computing module calculates furnace flame blackness α by following formula：
α=1-e-KPS,
KPS=A × (Kr* γ+Kh*μ+KC*C1*C2) × S,
Wherein, the KPS be the total attraction of combustion product, KrFor three atomic gas radiation falloff system under oxygen-enriched combusting atmosphere
Number；γ is three atomic gas volume shares in flue gas；KhFor soot particle radiative absorption coefficient；μ is quality flying dust concentration；KCFor carbon granules
Radiative absorption coefficient；C1、C2For dimensionless parameter；A is coefficient；S is the radiating layer effective thickness of burner hearth.
Preferably, soot particle radiative absorption coefficient K is calculated by following formulah：
Wherein dhFor grey particle effective diameter, GgFor flue gas mass, VgFor flue gas volume, TOFor flue gas temperature at furnace outlet
Degree.
Preferably, the 5th computing module is led to based on the area H and logarithmic temperature difference △ t of the caloric receptivity Q of burner hearth, heating surface
Cross the mean heat transfer coefficient K that following formula calculate burner hearth：
By above-mentioned technical proposal, three atomic gas radiative absorption coefficients under air burning atmosphere can be modified
Three atomic gas radiative absorption coefficients under to obtain oxygen-enriched combusting atmosphere, such that it is able to be based on the oxygen-enriched combusting atmosphere under three
Atomic gas radiative absorption coefficient calculates furnace flame blackness, and then is accurately calculated the heat transfer system under oxygen-enriched combusting atmosphere
Number.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the flow process of the heat transfer coefficient computational methods of the burner hearth of the oxygen-enriched combusting according to one embodiment of the present invention
Figure；
Fig. 2 is that the heat transfer coefficient of the burner hearth of the oxygen-enriched combusting according to one embodiment of the present invention changes with total partial pressure of oxygen
Schematic diagram；And
Fig. 3 is the square frame of the heat transfer coefficient computing device of the burner hearth of the oxygen-enriched combusting according to one embodiment of the present invention
Figure.
Description of reference numerals
The computing module of 1 correcting module, 2 first computing module 3 second
The computing module of 4 the 3rd the 4th computing module 6 of computing module 5 the 5th
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
Fig. 1 is the flow process of the heat transfer coefficient computational methods of the burner hearth of the oxygen-enriched combusting according to one embodiment of the present invention
Figure.
As shown in figure 1, the heat transfer coefficient computational methods bag of the burner hearth of the oxygen-enriched combusting of one embodiment of the present invention offer
Include：
S100, to three atomic gas radiative absorption coefficient K under air burning atmospherer' be modified and obtain oxygen-enriched combusting
Three atomic gas radiative absorption coefficient K under atmospherer；
S102, based on three atomic gas radiative absorption coefficient K under oxygen-enriched combusting atmosphererCalculate furnace flame blackness α；
S104, based on the furnace flame blackness α caloric receptivity Q of burner hearth is calculated；
S106, calculates the area H of heating surface；
S108, calculating logarithmic temperature difference △ t；And
S110, the area H and logarithmic temperature difference △ t based on the caloric receptivity Q of burner hearth, heating surface calculates the Coefficient K of burner hearth.
By above-mentioned technical proposal, three atomic gas radiative absorption coefficients under air burning atmosphere can be modified
Three atomic gas radiative absorption coefficients under to obtain oxygen-enriched combusting atmosphere, such that it is able to be based on the oxygen-enriched combusting atmosphere under three
Atomic gas radiative absorption coefficient calculates furnace flame blackness, and then is accurately calculated the heat transfer system under oxygen-enriched combusting atmosphere
Number.
Wherein, with regard to the meter of logarithmic temperature difference △ t in the calculating of the area H of heating surface in step S106 and step S108
Calculate, can be to be calculated using existing mode in prior art, the present invention is not defined to this.
For example, based on heating surface inlet water temperature, heating surface exit water temperature, heating surface input gas temperature and can receive
Hot face exit gas temperature calculating logarithmic temperature difference △ t.
According to one embodiment of the present invention, the three atomic gas radiation under air burning atmosphere is subtracted using following formula
Weak COEFFICIENT Kr' it is modified the three atomic gas radiative absorption coefficient K obtained under oxygen-enriched combusting atmospherer：
Kr=Kr'-Δ K, wherein,
WhereinFor the partial pressure (unit is MPa) of vapor,For CO2Partial pressure (unit is MPa), F be effective spoke
Penetrate thickness degree (unit is cm).
In oxygen-enriched combusting (O2/CO2Under endless form) CO in flue gas2Volume ratio has a very large change, therefore is calculating
CO is must take into during three atomic gas radiative absorption coefficients2And H2O light belts partly overlap brought impact.By above-mentioned formula
The amendment to three atomic gas radiative absorption coefficients under air burning atmosphere can be realized, can be by CO2Volume ratio becomes
Change brought impact to take into account such that it is able to accurately calculate the heat transfer coefficient under oxygen-enriched combusting atmosphere.
According to one embodiment of the present invention, furnace flame blackness α can be calculated by following formula：
α=1-e-KPS,
KPS=A × (Kr* γ+Kh*μ+KC*C1*C2) × S,
Wherein, the KPS be the total attraction of combustion product, KrFor three atomic gas radiation falloff system under oxygen-enriched combusting atmosphere
Number；γ is three atomic gas volume shares in flue gas；KhFor soot particle radiative absorption coefficient；μ is quality flying dust concentration；KCFor carbon granules
Radiative absorption coefficient；C1、C2For dimensionless parameter；A is coefficient；S is the radiating layer effective thickness of burner hearth, and wherein A can be normal
Number.
According to one embodiment of the present invention, soot particle radiative absorption coefficient K can be calculated by following formulah：
Wherein dhFor grey particle effective diameter, GgFor flue gas mass, VgFor flue gas volume, TOFor flue gas temperature at furnace outlet
Degree.
The density of flue gas generally lies in a geostationary level under air burning atmosphere, so being related to smoke density
Generally by density as constant in formula.But in O2/CO2The great variety of flue gas composition volume ratio causes cigarette under endless form
The density of gas there occurs sizable change, therefore the density of flue gas cannot function as constant to calculate.Calculated by above-mentioned formula
Soot particle radiative absorption coefficient Kh, the change of the density of flue gas caused by the change of flue gas composition volume ratio can be taken into account.
According to one embodiment of the present invention, caloric receptivity Q, the area H of heating surface and logarithmic temperature difference of burner hearth can be based on
△ t calculate the mean heat transfer coefficient K of burner hearth by following formula：
Wherein, the unit of the caloric receptivity Q of burner hearth is W；The unit of the area H of heating surface is m2；The unit of logarithmic temperature difference △ t
For DEG C.
Fig. 2 is that the heat transfer coefficient of the burner hearth of the oxygen-enriched combusting according to one embodiment of the present invention changes with total partial pressure of oxygen
Schematic diagram.
As shown in Fig. 2 being calculated Heat Transfer in Furnace coefficient using the computational methods described in above-mentioned embodiment of the invention
As the increase of total partial pressure of oxygen gradually increases.
Specifically, in during dry circulation, the heat transfer coefficient of burner hearth is about 112W/m when total partial pressure of oxygen is 21%2·K；Total oxygen
The heat transfer coefficient of burner hearth is about 115W/m when partial pressure is 26%2·K；The heat transfer coefficient of burner hearth is about when total partial pressure of oxygen is 35%
121W/m2·K.During wet circulation, the heat transfer coefficient of burner hearth is about 108W/m when total partial pressure of oxygen is 21%2·K；Total partial pressure of oxygen
For 26% when burner hearth heat transfer coefficient be about 115W/m2·K；The heat transfer coefficient of burner hearth is about 126W/m during total partial pressure of oxygen 35%2·
K。
The content of the above-mentioned embodiment description of the present invention is primarily directed to and air atmosphere lower hearth heat in prior art
Where power computational methods difference, with regard to removing stove in heat Balance Calculation step, heating surface calculation procedure and burner hearth thermodynamic computing
Calculation procedure beyond thorax flame blackness can adopt consistent with air atmosphere lower hearth thermal calculation method in prior art
Method and step.It is not right below only to these step simple example explanations consistent with prior art in order to not obscure the present invention
It is described in detail.
For example, heat Balance Calculation can include under air atmosphere in prior art：
Calculate boiler input heat QPP, calculate thermal cycle flue gas enthalpy HRK, the smoke evacuation enthalpy determined under exhaust gas temperature,
Calculate flue gas loss (having deducted recoverys), determine boiler radiation loss and heat loss due to sensible heat in slag, with counter balancing method calculating boiler
The thermal efficiency, calculate boiler working substance effectively utilizes heat, determine boiler oil consumption of calorie and calculated fuel consumption.
For example, the calculating step in prior art in air atmosphere lower hearth thermodynamic computing in addition to furnace flame blackness
Suddenly can include：
The heat and calculating brought into hot blast are calculated according to the hot blast temperature for assuming with every kilogram of fuel having into burner hearth
Effect heat, and try to achieve adiabatic combustion temperature, calculated in flame according to the form and arrangement of fuel type and combustion apparatus
Heart position parameter M, the average thermal effective coefficient of furnace heating surface, estimation furnace outlet cigarette are determined according to furnace heating surface architectural characteristic
Temperature degree simultaneously calculates burner hearth flue gas mean heat capacity, calculates furnace outlet gas temperature and check furnace outlet gas temperature error, calculates stove
The heat exchange of radiation heating-surface in thorax thermal parameter (such as furnace volume heat release rate, section thermic load, wall thermic load), burner hearth is calculated
(such as pendant superheater, furnace roof pipe).
For example, heating surface is calculated and can included under air atmosphere in prior art：
Obtain heating surface import cigarette temperature and cigarette enthalpy and look into the flue gas share (ratio) for taking corresponding enthalpy, hypothesis heating surface flue
And flue gas is to the thermal discharge of heating surface and calculates the gentle cigarette enthalpy of outlet cigarette on this basis, determine heating surface rate-of flow (wherein,
For superheater can determine according to water spray position and injection flow rate), determine according to balance heat transfer the medium outlet temperature of heating surface
With enthalpy, calculating heating surface heat transfer coefficient, calculating heating surface heat transfer temperature and pressure, calculating heating surface heat output, check heat output error.
Fig. 3 is the square frame of the heat transfer coefficient computing device of the burner hearth of the oxygen-enriched combusting according to one embodiment of the present invention
Figure.
As shown in figure 3, the heat transfer coefficient computing device bag of the burner hearth of the oxygen-enriched combusting of one embodiment of the present invention offer
Include：Correcting module 1, for three atomic gas radiative absorption coefficient K under air burning atmospherer' be modified and obtain oxygen-enriched
Three atomic gas radiative absorption coefficient K under combustion atmospherer；First computing module 2, for based on three under oxygen-enriched combusting atmosphere
Atomic gas radiative absorption coefficient KrCalculate furnace flame blackness α；Second computing module 3, for black based on the furnace flame
Degree α calculates the caloric receptivity Q of burner hearth；3rd computing module 4, for calculating the area H of heating surface；4th computing module 5, based on
Calculate logarithmic temperature difference △ t；And the 5th computing module 6, for caloric receptivity Q, the area H of heating surface and logarithmic temperature difference based on burner hearth
△ t calculate the Coefficient K of burner hearth.
By above-mentioned technical proposal, three atomic gas radiative absorption coefficients under air burning atmosphere can be modified
Three atomic gas radiative absorption coefficients under to obtain oxygen-enriched combusting atmosphere, such that it is able to be based on the oxygen-enriched combusting atmosphere under three
Atomic gas radiative absorption coefficient calculates furnace flame blackness, and then is accurately calculated the heat transfer system under oxygen-enriched combusting atmosphere
Number.
According to one embodiment of the present invention, the correcting module 1 is using following formula to three under air burning atmosphere
Atomic gas radiative absorption coefficient Kr' it is modified the three atomic gas radiative absorption coefficient K obtained under oxygen-enriched combusting atmospherer：
Kr=Kr'-Δ K, wherein,
WhereinFor the partial pressure (unit is MPa) of vapor,For CO2Partial pressure (unit is MPa), F be effective spoke
Penetrate thickness degree (unit is cm).
According to one embodiment of the present invention, first computing module 2 calculates furnace flame blackness by following formula
α：
α=1-e-KPS,
KPS=A × (Kr* γ+Kh*μ+KC*C1*C2) × S,
Wherein, the KPS be the total attraction of combustion product, KrFor three atomic gas radiation falloff system under oxygen-enriched combusting atmosphere
Number；γ is three atomic gas volume shares in flue gas；KhFor soot particle radiative absorption coefficient；μ is quality flying dust concentration；KCFor carbon granules
Radiative absorption coefficient；C1、C2For dimensionless parameter；A is coefficient；S is the radiating layer effective thickness of burner hearth, and wherein A can be normal
Number.
According to one embodiment of the present invention, soot particle radiative absorption coefficient K can be calculated by following formulah：
Wherein dhFor grey particle effective diameter, GgFor flue gas mass, VgFor flue gas volume, TOFor flue gas temperature at furnace outlet
Degree.
According to one embodiment of the present invention, caloric receptivity Q, the face of heating surface of the 5th computing module 6 based on burner hearth
Product H and logarithmic temperature difference △ t calculates the mean heat transfer coefficient K of burner hearth by following formula：
The above-mentioned device of the present invention is corresponding with above-mentioned method, for the specific descriptions of device be referred to previously with regard to
The description of method, the present invention is repeated no more.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, various letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy is no longer separately illustrated.
Additionally, can also be combined between a variety of embodiments of the present invention, as long as it is without prejudice to this
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of heat transfer coefficient computational methods of the burner hearth of oxygen-enriched combusting, wherein, the method includes：
To three atomic gas radiative absorption coefficient K under air burning atmospherer' it is modified three obtained under oxygen-enriched combusting atmosphere
Atomic gas radiative absorption coefficient Kr；
Based on three atomic gas radiative absorption coefficient K under oxygen-enriched combusting atmosphererCalculate furnace flame blackness α；
The caloric receptivity Q of burner hearth is calculated based on the furnace flame blackness α；
Calculate the area H of heating surface；
Calculating logarithmic temperature difference △ t；And
Area H and logarithmic temperature difference △ t based on the caloric receptivity Q of burner hearth, heating surface calculates the Coefficient K of burner hearth.
2. method according to claim 1, wherein, using following formula to three atomic gas spokes under air burning atmosphere
Penetrate attenuation coefficient Kr' it is modified the three atomic gas radiative absorption coefficient K obtained under oxygen-enriched combusting atmospherer：
Kr=Kr'-Δ K, wherein,
WhereinFor the partial pressure of vapor,For CO2Partial pressure, F be Net long wave radiation thickness degree.
3. method according to claim 2, wherein, calculate furnace flame blackness α by following formula：
α=1-e-KPS,
KPS=A × (Kr* γ+Kh*μ+KC*C1*C2) × S,
Wherein, the KPS be the total attraction of combustion product, KrFor three atomic gas radiative absorption coefficients under oxygen-enriched combusting atmosphere；γ
For three atomic gas volume share in flue gas；KhFor soot particle radiative absorption coefficient；μ is quality flying dust concentration；KCSubtract for carbon granules radiation
Weak pattern number；C1、C2For dimensionless parameter；A is coefficient；S is the radiating layer effective thickness of burner hearth.
4. method according to claim 3, wherein, calculate soot particle radiative absorption coefficient K by following formulah：
Wherein dhFor grey particle effective diameter, GgFor flue gas mass, VgFor flue gas volume, TOFor flue-gas temperature at furnace outlet.
5. the method according to any one of claim 1-4, wherein, based on the caloric receptivity Q of burner hearth, the area H of heating surface
With the mean heat transfer coefficient K that logarithmic temperature difference △ t calculate burner hearth by following formula：
6. a kind of heat transfer coefficient computing device of the burner hearth of oxygen-enriched combusting, wherein, the device includes：
Correcting module, for three atomic gas radiative absorption coefficient K under air burning atmospherer' be modified and obtain oxygen-enriched combustion
Burn three atomic gas radiative absorption coefficient K under atmospherer；
First computing module, for based on three atomic gas radiative absorption coefficient K under oxygen-enriched combusting atmosphererCalculate furnace flame
Blackness α；
Second computing module, for calculating the caloric receptivity Q of burner hearth based on the furnace flame blackness α；
3rd computing module, for calculating the area H of heating surface；
4th computing module, for calculating logarithmic temperature difference △ t；And
5th computing module, for calculating the biography of burner hearth based on the area H and logarithmic temperature difference △ t of the caloric receptivity Q of burner hearth, heating surface
Hot COEFFICIENT K.
7. device according to claim 6, wherein, the correcting module is using following formula under air burning atmosphere
Three atomic gas radiative absorption coefficient Kr' it is modified the three atomic gas radiative absorption coefficient K obtained under oxygen-enriched combusting atmospherer：
Kr=Kr'-Δ K, wherein,
WhereinFor the partial pressure of vapor,For CO2Partial pressure, F be Net long wave radiation thickness degree.
8. device according to claim 7, wherein, it is black that first computing module calculates furnace flame by following formula
Degree α：
α=1-e-KPS,
KPS=A × (Kr* γ+Kh*μ+KC*C1*C2) × S,
Wherein, the KPS be the total attraction of combustion product, KrFor three atomic gas radiative absorption coefficients under oxygen-enriched combusting atmosphere；γ
For three atomic gas volume share in flue gas；KhFor soot particle radiative absorption coefficient；μ is quality flying dust concentration；KCSubtract for carbon granules radiation
Weak pattern number；C1、C2For dimensionless parameter；A is coefficient；S is the radiating layer effective thickness of burner hearth.
9. device according to claim 8, wherein, calculate soot particle radiative absorption coefficient K by following formulah：
Wherein dhFor grey particle effective diameter, GgFor flue gas mass, VgFor flue gas volume, TOFor flue-gas temperature at furnace outlet.
10. the device according to any one of claim 6-9, wherein, heat absorption of the 5th computing module based on burner hearth
Amount Q, the area H and logarithmic temperature difference △ t of heating surface calculate the mean heat transfer coefficient K of burner hearth by following formula：
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611128956.5A CN106650245A (en) | 2016-12-09 | 2016-12-09 | Method and device for calculating heat transfer coefficient of oxygen-enriched combustion hearth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611128956.5A CN106650245A (en) | 2016-12-09 | 2016-12-09 | Method and device for calculating heat transfer coefficient of oxygen-enriched combustion hearth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106650245A true CN106650245A (en) | 2017-05-10 |
Family
ID=58824056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611128956.5A Pending CN106650245A (en) | 2016-12-09 | 2016-12-09 | Method and device for calculating heat transfer coefficient of oxygen-enriched combustion hearth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106650245A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107506549A (en) * | 2017-08-22 | 2017-12-22 | 广东电网有限责任公司电力科学研究院 | A kind of oxygen-enriched combustion boiler radiant heat transfer thermal calculation method and device |
| CN114238841A (en) * | 2021-12-22 | 2022-03-25 | 西安交通大学 | Method for calculating heat transfer coefficient of combustion area of incinerator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120241677A1 (en) * | 2009-06-09 | 2012-09-27 | Sundrop Fuels, Inc. | Various methods and apparatuses for a radiant-heat driven chemical reactor |
| CN103984868A (en) * | 2014-05-21 | 2014-08-13 | 华中科技大学 | Method for acquiring thermal performance of oxygen-enriched combustion boiler |
-
2016
- 2016-12-09 CN CN201611128956.5A patent/CN106650245A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120241677A1 (en) * | 2009-06-09 | 2012-09-27 | Sundrop Fuels, Inc. | Various methods and apparatuses for a radiant-heat driven chemical reactor |
| CN103984868A (en) * | 2014-05-21 | 2014-08-13 | 华中科技大学 | Method for acquiring thermal performance of oxygen-enriched combustion boiler |
Non-Patent Citations (5)
| Title |
|---|
| 余畅: "《基于图像处理技术的煤/煤气混烧的火焰黑度检测与分析》", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
| 姜志伟 等: "《循环流化床锅炉吸热量在线预测模型》", 《华中科技大学学报(自然科学版)》 * |
| 朱海跃: "《富氧燃烧锅炉热力性能与设计方法研究》", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
| 王鹏 等: "《基于修正辐射模型的富氧燃烧传热对比分析》", 《电站系统工程》 * |
| 秦裕琨: "《炉内传热》", 31 July 1981 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107506549A (en) * | 2017-08-22 | 2017-12-22 | 广东电网有限责任公司电力科学研究院 | A kind of oxygen-enriched combustion boiler radiant heat transfer thermal calculation method and device |
| CN114238841A (en) * | 2021-12-22 | 2022-03-25 | 西安交通大学 | Method for calculating heat transfer coefficient of combustion area of incinerator |
| CN114238841B (en) * | 2021-12-22 | 2024-02-23 | 西安交通大学 | Method for calculating heat transfer coefficient of combustion area of incinerator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106352320B (en) | A kind of furnace of power-plant boilers slagging sectional real-time soft measuring method | |
| CN107421116A (en) | A kind of energy-saving, environmental protection boiler with preheating | |
| CN205783767U (en) | A kind of fume afterheat high efficiente callback utilizes boiler | |
| CN106123339B (en) | A kind of condensing vacuum boiler | |
| CN106650245A (en) | Method and device for calculating heat transfer coefficient of oxygen-enriched combustion hearth | |
| CN107741091A (en) | A kind of energy-saving environmental-protection boiler with flue gas efficient process function | |
| ITMI20090709A1 (en) | METHOD AND APPARATUS FOR IMPROVING THE EFFICIENCY OF A HEAT GENERATOR FOR INDUSTRIAL OR DOMESTIC USE | |
| CN209445339U (en) | A kind of energy-saving and environment-friendly exhaust gas electricity generation boiler | |
| CN207894017U (en) | A kind of boiler of environmental protection and energy saving | |
| CN106650219A (en) | Oxygen-enriched combustion pulverized coal boiler heat balance calculation method | |
| CN108800141A (en) | A kind of burning heat-exchange system of garbage processing procedure | |
| CN2814148Y (en) | Coal and gas combustion two-purpose ultraconducting heat pipe steam generator | |
| CN206055643U (en) | A kind of organic waste liquid burning device | |
| CN106934167A (en) | A kind of 600MW oxygen-enriched combustion boilers numerical simulation method and device | |
| CN105066434B (en) | Direct contact type waste heat recovery normal pressure all-in-one oven | |
| CN108397903A (en) | A kind of energy-saving, environmental protection boiler applied to hotel | |
| CN206755243U (en) | Efficient energy-saving smokeless heat supply stove | |
| CN207661791U (en) | Etch-proof residual heat from boiler fume recovery system | |
| CN208042506U (en) | A kind of boiler plant of burner hearth heat convolution heating | |
| CN101338891A (en) | Far infrared hot pipe type vapor and water dual-purpose heating stove and method of use thereof | |
| CN205909336U (en) | Oxygen heating system and oxygen boosting that oxygen boosting fires stew pot stove fire stew pot stove | |
| CN112880204B (en) | Method for protecting smoke side smoke screen of boiler | |
| CN208075311U (en) | A kind of ultralow nitrogen discharged gas fired-boiler of expanding type burner hearth | |
| CN207661782U (en) | Energy saving and environment friendly waste incineration and generating electricity device | |
| CN108645025B (en) | Gas hot-blast stove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
|
| RJ01 | Rejection of invention patent application after publication |