CN108954318B - Analysis system and analysis method for axial staged premixed combustion characteristics of gas fuel - Google Patents
Analysis system and analysis method for axial staged premixed combustion characteristics of gas fuel Download PDFInfo
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- CN108954318B CN108954318B CN201810993071.4A CN201810993071A CN108954318B CN 108954318 B CN108954318 B CN 108954318B CN 201810993071 A CN201810993071 A CN 201810993071A CN 108954318 B CN108954318 B CN 108954318B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D99/00—Subject matter not provided for in other groups of this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2208/00—Control devices associated with burners
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention discloses an analysis system and an analysis method for axial staged premixed combustion characteristics of gas fuel. Therefore, the on-site verification is not needed, and the research cost of axial staged premixed combustion is reduced. In addition, the analysis system of the axial grading premixing combustion characteristics of the gas fuel can analyze different fuels, and has wide application range. The analysis system of the present invention is used to analyze the axially staged premixed combustion characteristics of a gaseous fuel.
Description
Technical Field
The invention relates to the technical field of fuel combustion characteristic analysis, in particular to an analysis system and an analysis method for axial grading premixed combustion characteristics of gas fuel.
Background
The axial staged combustion technology is widely applied to the gas turbine, has obvious effect in the aspects of load range adjustment and emission reduction through field verification, and can be found from the structure of the gas turbine combustion chamber which adopts the axial staged technology at present, manufacturers pay great attention to the axial staged blending and determine the optimal secondary fuel/air distribution ratio and residence time, and the axial staged combustion characteristics are greatly influenced. However, the study of the axial staged combustion characteristics can only be performed on site, and the study cost is high.
Therefore, how to reduce the research cost of axial staged premixed combustion is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
In view of the above, the technical problem to be solved by the invention is how to reduce the research cost of axial staged premixed combustion, and therefore, the invention provides an analysis system and an analysis method for the axial staged premixed combustion characteristics of gas fuel.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an analysis system for axially staged premixed combustion characteristics of gaseous fuel, comprising:
a fuel inlet for introducing gaseous fuel;
an air inlet for introducing air;
an axial staged combustor having a primary combustion zone and a secondary combustion zone;
a primary fuel supply pipe in communication with the primary injection assembly of the primary combustion zone;
a secondary fuel supply pipe in communication with the secondary injection assembly of the secondary combustion zone;
a fuel distributor communicating the fuel access end with the primary and secondary fuel supply pipes, the fuel distributor being capable of regulating a primary fuel flow rate into the primary fuel supply pipe and a secondary fuel flow rate into the secondary fuel supply pipe;
a primary air supply duct in communication with the air inlet of the primary combustion zone;
a secondary air supply pipe in communication with the secondary fuel supply pipe;
an air distributor communicating the air inlet with the primary air supply pipe and the secondary air supply pipe, the air distributor being capable of regulating a primary air flow rate into the primary air supply pipe and a secondary air flow rate into the secondary air supply pipe;
a flue gas detector for detecting the content of pollutants in the flue gas discharged by the axial staged burner;
the flame acquisition instrument is used for acquiring a main combustion flame image of the main combustion zone and a secondary combustion flame image of the secondary combustion zone; and
the controller is used for receiving working condition parameters, and controlling the air distributor and the fuel distributor according to the working condition parameters so as to adjust the primary air flow rate, the secondary air flow rate, the primary fuel flow rate and the secondary fuel flow rate to be within corresponding thresholds; and obtaining the corresponding pollutant content, the main combustion flame image and the secondary combustion flame image under the working condition parameters.
Preferably, in the analysis system of gas fuel axial staged premixed combustion characteristics, the working condition parameters include: total equivalence ratio, secondary equivalence ratio, and secondary load ratio.
Preferably, in the analysis system of gas fuel axial staged premixed combustion characteristics, the secondary injection assembly comprises four nozzles, the working condition parameters further comprise the opening number of the nozzles, and the secondary injection assembly determines the opening or closing of the nozzles according to the working condition parameters.
Preferably, in the analysis system of the above-mentioned gas fuel axial staged premixed combustion characteristics, the diameter of the nozzles is 1mm or 2mm, and four of the nozzles are arranged to intersect.
Preferably, in the analysis system of gas fuel axial staged premixed combustion characteristics, the fuel distributor comprises a first mass flow controller arranged on the primary fuel supply pipe and a second mass flow controller arranged on the secondary fuel supply pipe, wherein the range of the first mass flow controller is 0-200SLM, and the range of the second mass flow controller is 0-5SLM.
Preferably, in the analysis system of gas fuel axial staged premixed combustion characteristics, the fuel distributor further comprises a third mass flow controller arranged in parallel with the first mass flow controller, wherein the third mass flow controller has a measuring range of 0-37.5SLM.
Preferably, in the analysis system of gas fuel axial staged premixed combustion characteristics, the air distributor comprises a fourth mass flow controller arranged on the primary air supply pipe and a fifth mass flow controller arranged on the secondary air supply pipe, wherein the range of the fourth mass flow controller is 0-1000SLM, and the range of the fifth mass flow controller is 0-50SLM.
Preferably, in the analysis system for gas fuel axial staged premixed combustion characteristics, the fuel inlet end is further provided with a first switch valve, the primary fuel supply pipe is provided with a second switch valve, the secondary fuel supply pipe is provided with a third switch valve, and the air inlet end is further provided with a fourth switch valve.
The invention also discloses an analysis method of the axial staged premixed combustion characteristics of the gas fuel, which comprises the following steps:
docking the fuel with the fuel access terminal;
docking air with the air access terminal;
setting working condition parameters;
receiving working condition parameters, and controlling the air distributor and the fuel distributor according to the working condition parameters so as to adjust the primary air flow rate, the secondary air flow rate, the primary fuel flow rate and the secondary fuel flow rate to be within corresponding thresholds; and obtaining the corresponding pollutant content, the main combustion flame image and the secondary combustion flame image under the working condition parameters.
Preferably, in the method for analyzing the axial staged premixed combustion characteristics of a gaseous fuel, the contaminant content includes NO X Content and CO content.
According to the technical scheme, the analysis system of the axial grading premixed combustion characteristic of the gas fuel can obtain pollutant content, a main combustion flame image and a secondary combustion flame image under different working condition parameters, so that the axial grading premixed combustion characteristic is obtained. Therefore, the on-site verification is not needed, and the research cost of axial staged premixed combustion is reduced. In addition, the analysis system of the axial grading premixing combustion characteristics of the gas fuel can analyze different fuels, and has wide application range.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an analysis system for axially staged premixed combustion characteristics of gaseous fuel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an analysis system for axially staged premixed combustion characteristics of a further gaseous fuel in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of an analysis system for axially staged premixed combustion characteristics of a further gaseous fuel in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of an analysis system for axially staged premixed combustion characteristics of a further gaseous fuel according to embodiments of the present invention;
FIG. 5 is a schematic diagram of an analysis system for axially staged premixed combustion characteristics of a further gaseous fuel in accordance with an embodiment of the present invention;
in the figure, 101 is a fuel inlet, 102 is a primary fuel supply pipe, 103 is a secondary fuel supply pipe, 104 is an air inlet, 105 is a primary air supply pipe, 106 is a secondary air supply pipe, 200 is an axially staged burner, 300 is a fuel distributor, 301 is a first mass flow controller, 302 is a second mass flow controller, 303 is a third mass flow controller, 400 is an air distributor, 401 is a fourth mass flow controller, 402 is a fifth mass flow controller, 500 is a flue gas detector, 600 is a flame collector, 700 is a controller, 801 is a first switch valve, 802 is a second switch valve, 803 is a third switch valve, and 804 is a fourth switch valve.
Detailed Description
The invention aims at providing an analysis system and an analysis method for the axial staged premixed combustion characteristics of gas fuel so as to reduce the research cost of the axial staged premixed combustion.
Furthermore, the embodiments shown below do not limit the summary of the invention described in the claims. The whole contents of the constitution shown in the following examples are not limited to the solution of the invention described in the claims.
Referring to fig. 1 to 5, an analysis system for axially staged premixed combustion characteristics of a gaseous fuel according to the present invention includes: a fuel inlet 101, an air inlet 104, an axially staged burner 200, a primary fuel supply pipe 102, a secondary fuel supply pipe 103, a fuel distributor 300, a primary air supply pipe 105, a secondary air supply pipe 106, an air distributor 400, a flue gas detector 500, a flame arrestor 600 and a controller 700. Wherein:
a fuel access port 101 for introducing a gaseous fuel, the fuel directly interfacing with the fuel access port 101 to provide fuel to the overall system;
an air access end 104 for introducing air, the air directly interfacing with the air access end 104 to provide air for the overall system;
an axial staged combustor 200 having a primary combustion zone and a secondary combustion zone; the main combustion area and the secondary combustion area respectively adopt quartz glass tubes with the length of 300mm, wherein the burner of the main combustion area adopts lean premixed combustion, and the secondary combustion area also adopts premixed combustion. The injection assembly of the secondary combustion zone comprises four nozzles which can be respectively controlled to be closed, wherein the diameter of the secondary nozzle is 1mm or 2mm, and the arrangement mode is crossed.
A primary fuel supply pipe 102 communicating with the primary injection assembly of the main combustion zone for introducing fuel into the primary injection assembly of the main combustion zone for combustion therein;
a secondary fuel supply pipe 103 communicating with the secondary injection assembly of the secondary combustion zone for introducing fuel into the secondary injection assembly of the secondary combustion zone for combustion therein; in the embodiment of the present invention, the secondary fuel supply pipe 103 is a rubber pipe, and the pipe length is long, so that the secondary fuel/air premixed gas is uniformly mixed before being injected into the secondary combustion zone.
A fuel distributor 300 communicating the fuel inlet 101 with the primary fuel supply pipe 102 and the secondary fuel supply pipe 103, the fuel distributor 300 being capable of regulating the primary fuel flow into the primary fuel supply pipe 102 and the secondary fuel flow into the secondary fuel supply pipe 103; there are many structures capable of realizing fuel distribution to the primary fuel supply pipe 102 and the secondary fuel supply pipe 103, and the present invention is not described with emphasis, and in order to achieve precise control, in this embodiment of the present invention, the fuel distributor 300 further includes a first mass flow controller 301 disposed on the primary fuel supply pipe 102 and a second mass flow controller 302 disposed on the secondary fuel supply pipe 103, where the range of the first mass flow controller 301 is 0-200SLM, the precision is 1% full range, and the range of the second mass flow controller 302 is 0-5SLM.
In addition, to accommodate different operating conditions, the fuel dispenser 300 further includes a third mass flow controller 303 disposed in parallel with the first mass flow controller 301, wherein the third mass flow controller has a range of 0-37.5SLM. When the span of the second mass flow controller 302 is exceeded under the operating conditions, the controller selects the third mass flow controller 303 to regulate the flow to the secondary fuel supply 103.
A primary air supply pipe 105 communicating with an air inlet of the main combustion zone for supplying air to the main combustion zone;
a secondary air supply pipe 106 communicating with the secondary fuel supply pipe 103 for premixing with the fuel in the secondary fuel supply pipe 103; it is within the scope of the present invention to provide a conduit that allows air to be introduced into the secondary fuel supply pipe 103. In the embodiment of the invention, the secondary air supply pipe 106 is a rubber pipe, and the length of the pipe is long, so that the air and the fuel can be uniformly mixed before entering the secondary injection assembly of the secondary combustion zone;
an air distributor 400 communicating the air inlet 104 with the primary air supply duct 105 and the secondary air supply duct 106, the air distributor 400 being capable of regulating the primary air flow into the primary air supply duct 105 and the secondary air flow into the secondary air supply duct 106. There are many structures that can achieve air distribution to different ducts, the present invention is not specifically described, and in order to achieve accurate control, the air distributor 400 in the embodiment of the present invention includes a fourth mass flow controller 401 disposed on the primary air supply pipe 105 and a fifth mass flow controller 402 disposed on the secondary air supply pipe 106, where the fourth mass flow controller 401 has a range of 0-1000SLM and the fifth mass flow controller 402 has a range of 0-50SLM.
The flue gas detector 500 is used for detecting the pollutant content in the flue gas discharged by the axial staged burner 200. In a normal state, the smoke detector 500Including flue gas sampling probe and flue gas analyzer, wherein, sampling probe is used for taking a sample to the flue gas, and flue gas analyzer is used for the O in the analysis flue gas 2 CO, NO and NO 2 In the embodiment of the invention, the sampling probe is arranged at the outlet of the secondary combustion zone, the sampling hole is opposite to the incoming flow direction of the smoke, the sampling probe introduces the smoke into the smoke analyzer, and the O in the smoke is analyzed 2 CO, NO and NO 2 Content of O 2 The measurement accuracy is +/-0.2%, and CO, NO and NO 2 The measurement accuracy of (2) is + -5% measured value. When the smoke component is actually measured, the smoke component data is calculated and averaged within a period of time after the smoke component is stable, so as to obtain the smoke component and NO under the working condition x the/CO emission data have all been converted to a dry oxygen concentration of 15% at the national standard requirements (@ 15% o 2).
The flame collector 600 is used for collecting a main combustion flame image of the main combustion zone and a secondary combustion flame image of the secondary combustion zone. To obtain the heat release intensity of the flame under different combustion conditions, it was also tested to obtain an OH (OH chemical autofluorescence) profile, indicating that the position of the main reaction zone is higher with a stronger OH signal indicating a higher local heat release rate and lower with a weaker OH signal indicating a lower heat release rate. The OH test is obtained by combining an ICCD (enhanced CCD) camera with BP308/10 narrow-band filter plate measurement, the shutter speed of the ICCD is 600000ns, the delay time value is 5ns, the measurement in the pulse width of each pulse is ensured, the flame form can be accurately captured, and the interference of the noise wave is reduced. The image is processed by methods such as Average (AVG) and Root Mean Square (RMS) after background noise correction.
The controller 700 receives the operating condition parameters, and controls the air distributor 400 and the fuel distributor 300 according to the operating condition parameters to adjust the primary air flow, the secondary air flow, the primary fuel flow and the secondary fuel flow within the corresponding threshold values; and obtaining the corresponding pollutant content, the main combustion flame image and the secondary combustion flame image under the working condition parameters. The working condition parameters include: total equivalence ratio, secondary equivalence ratio, and secondary duty ratio; the pollutant content includes: NO (NO) X Content and CO content.
By adopting the analysis system for the axial grading premixing combustion characteristics of the gas fuel, the pollutant content, the main combustion flame image and the secondary combustion flame image under different working condition parameters can be obtained, so that the axial grading premixing combustion characteristics can be obtained. Therefore, the on-site verification is not needed, and the research cost of axial staged premixed combustion is reduced. In addition, the analysis system of the axial grading premixing combustion characteristics of the gas fuel can analyze different fuels, and has wide application range. The analysis system of the present invention is used to analyze the axially staged premixed combustion characteristics of a gaseous fuel.
In order to further expand the application range of the analysis system, the secondary injection assembly in the secondary combustion zone comprises four nozzles, the working condition parameters also comprise the opening quantity of the nozzles, and the secondary injection assembly determines the opening or closing of the nozzles according to the working condition parameters. The diameter of the nozzles is 1mm or 2mm, and four nozzles are arranged in a crossed manner.
The following natural gas was replaced with 99.9% methane fuel, with fuel and air inlet temperatures at ambient:
based on the simulation results of the fuel axial classification according to the Chemkin zero-dimensional analysis of the different equivalence ratios of the secondary premixed gas, the fact that the increase of the secondary equivalence ratio is favorable for reducing NOx emission is found, the working condition that the secondary equivalence ratio is 5 is selected, experimental research of different secondary load ratios is carried out, and considering that the length of secondary flame cannot be too long, the secondary nozzle structure when the secondary equivalence ratio is 5 is arranged to be 2 secondary nozzles, and the diameter is 2mm. Changing the secondary load ratio to 5% and 10%, researching combustion characteristics at different adiabatic flame temperatures by changing the total equivalence ratio for the same secondary load ratio, wherein when the secondary load ratio is 5%, the secondary fuel flow is smaller, the second mass flow controller 302 is controlled by using a Bronkhorst thermal mass flow meter/controller with higher precision, the precision is +/-0.8% reading + -0.2% full range, and the range is 0-5SLM; when the secondary load of the fuel is 10%, the third mass flow controller 303 is adopted, and the measuring range is 0-50SLM thermal mass flowmeter, and the precision is 1% of the full measuring range;
in order to control the secondary load ratio of the fuel to be unchanged by using the Bronkhorst thermal mass flowmeter with higher precision, considering that the secondary load ratio exceeds the Bronkhorst range when being larger, different secondary premixed gas equivalent ratio experimental researches are carried out when the secondary load ratio is selected to be 5%. The secondary equivalence ratio is divided into lean combustion and rich combustion, and in order to avoid the influence of different adiabatic flame temperatures of the secondary premixed gas on the NOx/CO emission of the fuel axial staged combustion, two equivalence ratios with the same adiabatic flame temperature near the equivalence ratio 1 are selected for research, wherein the two equivalence ratios are respectively 0.8 and 1.25. The NOx/CO emissions for the same fuel secondary load ratio and secondary equivalence ratio at different flame temperatures were measured by varying the total equivalence ratio.
In consideration of the secondary fuel measurement accuracy, the research of different fuel staged injection structures is carried out when the secondary load proportion is selected to be 5%. The different fuel graded injection structures are divided into a secondary injection mode and a secondary nozzle diameter, wherein the secondary injection mode is respectively 4 nozzle cross jet flows and 2 nozzle opposite jet flows, and the secondary nozzle diameter is respectively 1mm and 2mm.
The combustion characteristic influence study of the fuel axial grading mainly examines flame structure and pollutant emission, focuses on pollutant emission, and compares and analyzes the axial fuel grading combustion advantage with the traditional lean premixed combustion.
Table one: correspondence table for different working condition parameters of fuel axial staged combustion
Under the action of the analysis system, the pollutant content under different working condition parameters is finally obtained, and the pollutant content is shown in a second table:
and (II) table: pollutant content meter corresponding to different working condition parameters of fuel axial staged combustion
For convenience of control, the fuel access end is further provided with a first switching valve 801, the primary fuel supply pipe is provided with a second switching valve 802, the secondary fuel supply pipe is provided with a third switching valve 803, and the air access end is further provided with a fourth switching valve 804. The on-off section of the fuel introduction at the fuel access end can be controlled by providing the first switching valve 801; the opening and closing of the fuel introduction on the primary fuel supply pipe can be directly controlled by providing the second switching valve 802; the opening and closing of the fuel introduction on the secondary fuel supply pipe can be directly controlled by providing the third switching valve 803. The on/off of air introduced into the air inlet can be directly controlled by providing the fourth on/off valve 804.
The invention also discloses an analysis method of the axial staged premixed combustion characteristics of the gas fuel, which comprises the following steps:
docking the fuel with the fuel access terminal;
docking air with the air access terminal;
setting working condition parameters; according to the invention, working condition parameters can be set according to experience so as to obtain favorable experimental data.
Receiving working condition parameters, and controlling the air distributor and the fuel distributor according to the working condition parameters so as to adjust the primary air flow rate, the secondary air flow rate, the primary fuel flow rate and the secondary fuel flow rate to be within corresponding thresholds; and obtaining the corresponding pollutant content, the main combustion flame image and the secondary combustion flame image under the working condition parameters.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. An analysis system for the axially staged premixed combustion characteristics of a gaseous fuel, comprising:
a fuel inlet for introducing gaseous fuel;
an air inlet for introducing air;
an axial staged combustor having a primary combustion zone and a secondary combustion zone;
a primary fuel supply pipe in communication with the primary injection assembly of the primary combustion zone;
a secondary fuel supply pipe in communication with the secondary injection assembly of the secondary combustion zone; the fuel access end is also provided with a first switch valve, the primary fuel supply pipe is provided with a second switch valve, the secondary fuel supply pipe is provided with a third switch valve, and the air access end is also provided with a fourth switch valve;
a fuel distributor communicating the fuel access end with the primary and secondary fuel supply pipes, the fuel distributor being capable of regulating a primary fuel flow rate into the primary fuel supply pipe and a secondary fuel flow rate into the secondary fuel supply pipe;
a primary air supply duct in communication with the air inlet of the primary combustion zone;
a secondary air supply pipe in communication with the secondary fuel supply pipe;
an air distributor communicating the air inlet with the primary air supply pipe and the secondary air supply pipe, the air distributor being capable of regulating a primary air flow rate into the primary air supply pipe and a secondary air flow rate into the secondary air supply pipe;
a flue gas detector for detecting the content of pollutants in the flue gas discharged by the axial staged burner;
the flame acquisition instrument is used for acquiring a main combustion flame image of the main combustion zone and a secondary combustion flame image of the secondary combustion zone; and
the controller is used for receiving working condition parameters, and controlling the air distributor and the fuel distributor according to the working condition parameters so as to adjust the primary air flow rate, the secondary air flow rate, the primary fuel flow rate and the secondary fuel flow rate to be within corresponding thresholds; the corresponding pollutant content, the main combustion flame image and the secondary combustion flame image under the working condition parameters are obtained; the working condition parameters comprise: total equivalence ratio, secondary equivalence ratio, and secondary load ratio.
2. The system for analyzing the axial staged premixed combustion characteristics of gaseous fuel of claim 1, wherein said secondary injection assembly comprises four nozzles, said operating parameters further comprise the number of nozzles open, and said secondary injection assembly determines whether a nozzle is open or closed based on said operating parameters.
3. The system for analyzing the axial staged premixed combustion characteristics of gaseous fuel according to claim 2, wherein said nozzles have a diameter of 1mm or 2mm, four of said nozzles being arranged crosswise.
4. The system for analyzing the axially staged premixed combustion characteristics of gaseous fuel of claim 3, wherein said fuel dispenser comprises a first mass flow controller disposed on said primary fuel supply pipe and a second mass flow controller disposed on said secondary fuel supply pipe, wherein said first mass flow controller has a range of 0 to 200SLM and said second mass flow controller has a range of 0 to 5SLM.
5. The system for analyzing axially staged premixed combustion characteristics of gaseous fuel of claim 4, wherein said fuel dispenser further comprises a third mass flow controller disposed in parallel with said first mass flow controller, wherein said third mass flow controller has a range of 0-37.5SLM.
6. The system for analyzing axially staged premixed combustion characteristics of gaseous fuel of claim 5, wherein said air distributor comprises a fourth mass flow controller disposed on said primary air supply pipe and a fifth mass flow controller disposed on said secondary air supply pipe, wherein said fourth mass flow controller has a range of 0-1000SLM and said fifth mass flow controller has a range of 0-50SLM.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100280A (en) * | 1985-01-25 | 1986-07-30 | 杜马克无限公司路德维希·卡路萨公司 | Burner and employed nozzle that flammable flow media is used |
| CA2223394A1 (en) * | 1995-06-06 | 1996-12-12 | The North American Manufacturing Company | Method and apparatus for controlling staged combustion systems |
| CN1352369A (en) * | 2001-11-07 | 2002-06-05 | 华中科技大学 | Optimized control method of combustion in multiple fire nozzle hearth of boiler |
| CN1687639A (en) * | 2005-03-24 | 2005-10-26 | 华中科技大学 | Main burner equipment with adjustable outer rotational flow and inner direct flow |
| CN101629719A (en) * | 2008-07-17 | 2010-01-20 | 通用电气公司 | Coanda injection system for axially staged low emission combustors |
| CN101726004A (en) * | 2008-10-20 | 2010-06-09 | 通用电气公司 | Staged combustion systems and methods |
| CN101749728A (en) * | 2008-12-19 | 2010-06-23 | J.埃贝斯佩歇合资公司 | Vehicle combustor |
| CN105627304A (en) * | 2016-01-27 | 2016-06-01 | 北京泷涛环境科技有限公司 | Strong-swirling-flow fuel staging ultra-low-nitrogen gas burner |
| CN106461227A (en) * | 2014-06-26 | 2017-02-22 | 西门子能源公司 | Axial stage combustion system with exhaust gas recirculation |
| CN107687651A (en) * | 2017-07-24 | 2018-02-13 | 西北工业大学 | A kind of axially staged oil-poor directly mixed low pollution combustor |
| CN209263030U (en) * | 2018-08-29 | 2019-08-16 | 国电环境保护研究院有限公司 | The analysis system of the axially staged premixed combustion characteristic of gaseous fuel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9920927B2 (en) * | 2013-08-13 | 2018-03-20 | Haul-All Equipment Ltd. | Low NOx burner |
-
2018
- 2018-08-29 CN CN201810993071.4A patent/CN108954318B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100280A (en) * | 1985-01-25 | 1986-07-30 | 杜马克无限公司路德维希·卡路萨公司 | Burner and employed nozzle that flammable flow media is used |
| CA2223394A1 (en) * | 1995-06-06 | 1996-12-12 | The North American Manufacturing Company | Method and apparatus for controlling staged combustion systems |
| CN1352369A (en) * | 2001-11-07 | 2002-06-05 | 华中科技大学 | Optimized control method of combustion in multiple fire nozzle hearth of boiler |
| CN1687639A (en) * | 2005-03-24 | 2005-10-26 | 华中科技大学 | Main burner equipment with adjustable outer rotational flow and inner direct flow |
| CN101629719A (en) * | 2008-07-17 | 2010-01-20 | 通用电气公司 | Coanda injection system for axially staged low emission combustors |
| CN101726004A (en) * | 2008-10-20 | 2010-06-09 | 通用电气公司 | Staged combustion systems and methods |
| CN101749728A (en) * | 2008-12-19 | 2010-06-23 | J.埃贝斯佩歇合资公司 | Vehicle combustor |
| CN106461227A (en) * | 2014-06-26 | 2017-02-22 | 西门子能源公司 | Axial stage combustion system with exhaust gas recirculation |
| CN105627304A (en) * | 2016-01-27 | 2016-06-01 | 北京泷涛环境科技有限公司 | Strong-swirling-flow fuel staging ultra-low-nitrogen gas burner |
| CN107687651A (en) * | 2017-07-24 | 2018-02-13 | 西北工业大学 | A kind of axially staged oil-poor directly mixed low pollution combustor |
| CN209263030U (en) * | 2018-08-29 | 2019-08-16 | 国电环境保护研究院有限公司 | The analysis system of the axially staged premixed combustion characteristic of gaseous fuel |
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