CN109751622A - A kind of compound soft catalytic combustion system - Google Patents

A kind of compound soft catalytic combustion system Download PDF

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Publication number
CN109751622A
CN109751622A CN201711071798.9A CN201711071798A CN109751622A CN 109751622 A CN109751622 A CN 109751622A CN 201711071798 A CN201711071798 A CN 201711071798A CN 109751622 A CN109751622 A CN 109751622A
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CN
China
Prior art keywords
catalytic
combustion
premixer
zone
catalytic combustion
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Pending
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CN201711071798.9A
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Chinese (zh)
Inventor
陈哲
苏雷涛
胡亚轩
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Guangdong Electric Power Science Research Institute Energy Technology Co Ltd
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Guangdong Electric Power Design Institute
Electric Power Research Institute of Guangdong Power Grid Co Ltd
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Priority to CN201711071798.9A priority Critical patent/CN109751622A/en
Publication of CN109751622A publication Critical patent/CN109751622A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The present invention relates to a kind of compound soft catalytic combustion systems, by pre-mix zone, catalytic combustion zone and three, gas-phase combustion area region composition, pre-mix zone includes premixer, it is connected to the starting fluid pipeline of premixer's import and the initial igniter of the pipeline Yu premixer junction is set, it is connected to the main fuel line at premixer rear portion, the rear end of pre-mix zone is arranged in catalytic combustion zone, including the catalytic combustor with premixer's connection, cordierite honeycomb catalytic reactor is equipped in the catalytic combustor, the secondary fuel pipeline being connected to catalytic combustor, the rear end of catalytic combustion zone is arranged in gas-phase combustion area, including the homogeneous combustion room with catalytic combustor connection.Compared with prior art, reliable performance of the present invention, high combustion efficiency, environmental pollution are small;The thermal acoustic oscillation phenomenon in gas-turbine combustion chamber can be effectively reduced or eliminated simultaneously using non-flaming combustion.

Description

A kind of compound soft catalytic combustion system
Technical field
It is specifically a kind of by stagewise catalysis burning and rear catalysis combustion the present invention relates to a kind of device of energy technology field Sintering is closed, and the soft burner of compound catalysis of gas turbine high-performance and low emission characteristic is combined.
Background technique
Gas turbine obtains increasingly wide as a kind of important heat-function conversion equipment in fields such as ship, power generation and chemical industry General application has irreplaceable role and status in national economy and national defense construction.Gas turbine cycle efficiency mentions Height relies primarily on the increase of combustor exhaust temperature, and paradoxically NO in combustion chamber therewithXDischarge also will be with exhaust The raising of temperature and increase, while the working environment of heavy duty gas turbine combustion chamber is very severe, has that thermic load is big, high temperature is high How the features such as fast, high excess air coefficient and flow field are complicated, therefore, guarantee to improve on the basis of the high burning efficiency of combustion chamber The key technology of gas turbine performance is not only the difficult point for needing to break through both at home and abroad, while also making combustion chamber in gas turbine field Successful application is faced with problems and challenge.
NO is reduced using catalytic combustion technology in a combustion chamberXDischarge be to be existed by William Pfefferle earliest It proposes within 1975, the states such as the subsequent U.S. and Japan, which have all actively developed, can be applied to different scale ground gas turbine combustion chamber Catalysis technique research.Catalyst operating temperature was higher than combustor exit fuel gas temperature at that time, thus caused catalyst Inactivation and burnout problems, limit the development of catalytic combustor.The nineties proposes catalysis combustion using the concept of fractional combustion room The design combined with premixed combustion is burnt, reduces catalyst operating temperature, it is therefore prevented that the high temperature deactivation and aging of catalyst.Really Fixed reasonable catalysis/rear catalysis-premixed combustion cell structure, and carry out relevant normal pressure, high pressure prototype and component experiment and survey Examination is always that various countries carry out catalysis-premix fractional combustion room research method.The Toshiba company of Japan and Tokyo electric power Company proposes a kind of concept of catalysis-premix fractional combustion room, and the full size for having carried out 1300 DEG C of grade combustion chambers jointly is normal Compacting is tested and the small scale High-Voltage Experimentation of catalyst.The advanced turbine system plan of U.S. Department of Energy is proposed using catalysis burning drop The plan of low emission, and experiment and theoretical research are implemented respectively in Solar and Siemens-Westinghouse Electric.Currently, catalysis- The feasibility of premix fractional combustion room concept has been approved that low emission characteristic has also attracted people by various countries' experimental study Attention.
The research country of catalysis burning is carried out for many years, the emphasis of research has focused largely on catalyst, catalytic channels In terms of the influence of characteristic and operating parameter to catalysis response characteristic.It is catalyzed research main body of the burn application in gas turbine field Now using the research of the catalysis burning miniature gas turbine technology of low calorie fuels.
Chinese patent CN103912896A discloses a kind of aero-engine catalysis-premix point of contaminant reducing discharge Grade combustion chamber and operation method.The combustion chamber is along engine shaft to the ring structure of arrangement, it include pre-burning, premix, catalysis, Secondary combustion and homogeneous reaction area.Using diffusion combustion method in preignition zone reacts part of fuel and air, premixes There are fuel nozzle and air nozzle to mix well with air fuel in area, realizes fuel-rich fuel and and pre-burning in pre-mix zone outlet The high temperature refrigerant in area carries out the temperature that mixing improves flammable mixture, and pre-mix zone outlet mixes in catalysis and secondary conbustion zone High temperature flammable mixture enter reaction zone and carry out reaction and further increase Temperature of Working, catalysis and secondary conbustion zone tail gas contain A large amount of combustible components make its with after the secondary airflow mixing sprayed by air nozzle homogeneous reaction area further react with Improve Temperature of Working.
Chinese patent CN103912896A and the patent of application have essence different, be first application not with the former to navigate Empty engine, the latter are gas turbine;The fuel followed by used is different, the former is fuel oil, and the latter is combustion gas;Followed by method Upper difference, the former is that the flammable mixture mixed enters catalytic combustion zone, secondary conbustion zone, homogeneous reaction area, and the latter is to add Enter primary fuel and enter catalytic combustion zone completely burned, temperature is controlled at 1000 DEG C and is being contrary hereinafter, secondary fuel is added Answer area's completely burned.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide it is a kind of will catalysis burning and Catalysis burning (gas phase reaction) combines afterwards, and the compound catalysis for combining gas turbine high-performance and low emission characteristic is soft Burner.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of compound soft catalytic combustion system, using the mode of hierarchical concept, by pre-mix zone, catalytic combustion zone and gas The region composition of phase combustion zone three realizes the high-efficiency cleaning burning of fuel in a combustion chamber.Can reduce in combustion product NOx and Hydrocarbons content, efficiency of combustion with higher, reduces pollutant load;It is effective using non-flaming combustion process simultaneously Reduce or eliminate the thermal acoustic oscillation phenomenon in combustion chamber.
The pre-mix zone include premixer, the starting fluid pipeline for being connected to premixer's import and setting the pipeline with The initial igniter of premixer junction, the main fuel line for being connected to premixer rear portion,
The rear end of pre-mix zone is arranged in the catalytic combustion zone, and including the catalytic combustor with premixer's connection, this is urged Change in combustion chamber the secondary fuel pipeline for being equipped with cordierite honeycomb catalytic reactor, being connected to catalytic combustor,
The rear end of catalytic combustion zone is arranged in the gas-phase combustion area, including the homogeneous combustion with catalytic combustor connection Room.
Premixer, catalytic combustor and the homogeneous combustion room is arranged in the inner casing of burner.
Shell is also arranged with outside the inner casing.
Air inlet runner is equipped between the inner casing and shell, which is connected with premixer.
The entrance of the air inlet runner is connected with compressor interface.
The catalyst loadings of the cordierite honeycomb catalytic reactor are 1765.7g/m3, voidage be 75.7%, channel wall thickness 0.1651mm.
The rear end of the homogeneous combustion room is connect by turbine interface with turbine.
The temperature range that catalytic combustor of the invention can carry out catalysis reaction is 450 DEG C~1000 DEG C, rear catalysis/gas phase The air temperature ranges that reaction zone enters turbine are 1000~1550 DEG C.
In the use of the present invention, inlet air flow of the compressor air between fractional combustion chamber enclosure and inner casing in startup stage Road passes through hole and enters premixer.Starting fluid pipeline is opened simultaneously, and the fuel and air for flowing into premixer are in initial igniter Effect is lower to burn, and heats to fractional combustion room, initiation temperature needed for making the temperature of catalytic combustor reach reaction. Catalytic combustor and homogeneous combustion room simultaneously can preheat the air in air inlet runner.Subsequent start-up fuel conduit closes It closes, main fuel line is opened, into stablizing combustion phases.After main fuel line is opened, fuel from fuel inlet and pre- The working medium of mixed room is mixed into the catalytic combustor of fractional combustion room, and catalysis combustion is carried out in cordierite honeycomb catalytic reactor Burn reaction.In catalyticing combustion process, the catalyst degradation activation energy of methane and oxygen, while catalyst surface fine-porous Medium has suction-operated, so that reactant molecule is enriched in surface and improves reaction rate, accelerates the progress of reaction.By urging Agent can make methane under the conditions of compared with low light-off temperature, flameless combustion occur, and oxygenolysis is CO2And H2O, while releasing big Calorimetric energy.The methane of not completely burned still remaining in catalytic combustor, into homogeneous combustion room completely burned.It is fired by catalysis Burning a large amount of thermal energy generated increases gas temperature quickly, and the methane of secondary fuel pipeline enters homogeneous combustion room along pipeline and occurs High-temperature oxydation reaction, and then completely burned.The high temperature and high pressure gas generated by fractional combustion room is entered saturating by turbine interface It is flat, push turbine acting.
Compared with prior art, the present invention uses the mode of hierarchical concept, proposes a kind of by catalysis burning and rear catalysis combustion It burns (gas phase reaction) to combine, combines the soft burning dress of compound catalysis of gas turbine high-performance and low emission characteristic It sets.Utilize three regions of the advanced gas turbine Multilevel combustion room: pre-mix zone, catalytic combustion zone, gas-phase combustion area (urge afterwards Change combustion zone), realize the high-efficiency cleaning burning of fuel in a combustion chamber.It can reduce NOx and hydrocarbon in combustion product Content, efficiency of combustion with higher, reduces pollutant load;It effectively reduces or eliminates using non-flaming combustion process simultaneously Thermal acoustic oscillation phenomenon in combustion chamber.
Major catalytic burning in combustion zone of the invention and rear catalysis are burnt (gas phase reaction), the two areas are no flame combustion It burns, without localized hyperthermia, therefore in combustion product, NOx is very low, and thermoacoustic reforming phenomena is seldom.Simultaneously combustion even and temperature compared with Height, therefore burn completely, hydrocarbons content is almost without high combustion efficiency.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
In figure, 1- starting fluid pipeline, 2- initial igniter, 3- shell, 4- inner casing, the premixer 5-, 6- main fuel line, 7- secondary fuel pipeline, 8- catalytic combustor, 9- homogeneous combustion room, 10- air inlet runner, 11- compressor interface, 12- turbine connect Mouthful.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention Protection scope.
Embodiment
A kind of compound soft catalytic combustion system, structure is as shown in Figure 1, the advanced gas turbine in the present embodiment divides Grade formula combustion chamber is made of pre-mix zone, catalytic combustion zone, gas-phase combustion area (rear catalytic combustion zone) three regions, comprising: starting Fuel conduit 1, initial igniter 2, shell 3, inner casing 4, premixer 5, main fuel line 6, secondary fuel pipeline 7, catalysis burning Room 8, homogeneous combustion room 9, air inlet runner 10, compressor interface 11, turbine interface 12.Wherein compressor interface 11 and air inlet runner 10 are connected, and air inlet runner 10 is connected between combustor outer casing 3 and inner casing 4, and with premixer 5, starting fluid pipeline 1 and master Fuel conduit 6 is connected with premixer 5 respectively, and catalytic combustor 8 is mainly made of cordierite honeycomb catalytic reactor, secondary combustion The temperature of fuel is improved by carrying out heat exchange with catalytic combustor 8 in expects pipe road 7, and is connected with homogeneous combustion room 9, homogeneous combustion room 9 are connected by turbine interface 12 with turbine.
The fuel that apparatus of the present invention use is methane, and the temperature range that catalytic combustor can carry out catalysis reaction is 450 DEG C ~1000 DEG C, the air temperature ranges that rear catalysis/gas phase reaction area enters turbine are 1000~1550 DEG C.
Air inlet runner 10 of the compressor air between fractional combustion chamber enclosure 3 and inner casing 4 passes through hole in startup stage Into premixer 5.Starting fluid pipeline 1 is opened simultaneously, and the fuel and air for flowing into premixer 5 are under the effect of initial igniter 2 It burns, fractional combustion room is heated, initiation temperature needed for making the temperature of catalytic combustor 8 reach reaction.Catalysis Combustion chamber 8 and homogeneous combustion room 9 simultaneously can preheat the air in air inlet runner 10.Subsequent start-up fuel conduit 1 closes It closes, main fuel line 6 is opened, into stablizing combustion phases.After main fuel line 6 is opened, fuel from fuel inlet with The working medium of premixer 5 is mixed into the catalytic combustor 8 of fractional combustion room, is urged in cordierite honeycomb catalytic reactor Change combustion reaction, the catalyst loadings of the cordierite honeycomb catalytic reactor used are 1765.7g/m3, voidage be 75.7%, channel wall thickness 0.1651mm.In catalyticing combustion process, the catalyst degradation activation energy of methane and oxygen, together When catalyst surface fine-porous medium have suction-operated, so that reactant molecule is enriched in surface and improve reaction rate, add The fast progress of reaction.It can make methane under the conditions of compared with low light-off temperature by catalyst, flameless combustion, and oxygenolysis occurs For CO2And H2O, while releasing a large amount of thermal energy.The methane of not completely burned still remaining in catalytic combustor 8, into homogeneous combustion 9 completely burned of room.Increase gas temperature quickly by a large amount of thermal energy that catalysis burning generates, the methane of secondary fuel pipeline 7 Enter homogeneous combustion room 9 along pipeline and high-temperature oxydation reaction, and then completely burned occurs.The high temperature generated by fractional combustion room is high Body of calming the anger enters turbine by turbine interface 12, pushes turbine acting.
The present embodiment can be used as heavy, medium-sized and miniature gas turbine catalytic combustor.Present apparatus reliable performance, burning High-efficient, pollution products are few, and combustion uniformity is good, and the thermal acoustic oscillation that can be effectively reduced or eliminate in gas-turbine combustion chamber is existing As different model gas turbine high-performance and low emission characteristic can be taken into account.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow Ring substantive content of the invention.

Claims (7)

1. a kind of compound soft catalytic combustion system, which is characterized in that the device is fired by pre-mix zone, catalytic combustion zone and gas phase Three, area region composition is burnt,
The pre-mix zone includes premixer, the starting fluid pipeline for being connected to premixer's import and setting in the pipeline and premix The initial igniter of room junction, the main fuel line for being connected to premixer rear portion,
The rear end of pre-mix zone is arranged in the catalytic combustion zone, including the catalytic combustor with premixer's connection, catalysis combustion The indoor secondary fuel pipeline for being equipped with cordierite honeycomb catalytic reactor, being connected to catalytic combustor is burnt,
The rear end of catalytic combustion zone is arranged in the gas-phase combustion area, including the homogeneous combustion room with catalytic combustor connection.
2. the compound soft catalytic combustion system of one kind according to claim 1, which is characterized in that the premixer, Catalytic combustor and homogeneous combustion room are arranged in the inner casing of burner.
3. the compound soft catalytic combustion system of one kind according to claim 2, which is characterized in that outside the inner casing also It is arranged with shell.
4. the compound soft catalytic combustion system of one kind according to claim 3, which is characterized in that the inner casing and outer Air inlet runner is equipped between shell, which is connected with premixer.
5. the compound soft catalytic combustion system of one kind according to claim 4, which is characterized in that the air inlet runner Entrance be connected with compressor interface.
6. the compound soft catalytic combustion system of one kind according to claim 1, which is characterized in that the cordierite bee The catalyst loadings of nest shape catalytic reactor are 1765.7g/m3, voidage 75.7%, channel wall thickness 0.1651mm.
7. the compound soft catalytic combustion system of one kind according to claim 1, which is characterized in that the homogeneous combustion The rear end of room is connect by turbine interface with turbine.
CN201711071798.9A 2017-11-03 2017-11-03 A kind of compound soft catalytic combustion system Pending CN109751622A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114110658A (en) * 2021-11-19 2022-03-01 上海交通大学 Hydrogen fuel staged flameless combustion method and combustion device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0561668U (en) * 1992-01-21 1993-08-13 東京電力株式会社 Gas turbine combustor
CN2878940Y (en) * 2006-01-18 2007-03-14 北京工业大学 Gas fuel catalytic burner
CN207648854U (en) * 2017-11-03 2018-07-24 广东电网有限责任公司电力科学研究院 A kind of soft homogeneous catalysis burner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0561668U (en) * 1992-01-21 1993-08-13 東京電力株式会社 Gas turbine combustor
CN2878940Y (en) * 2006-01-18 2007-03-14 北京工业大学 Gas fuel catalytic burner
CN207648854U (en) * 2017-11-03 2018-07-24 广东电网有限责任公司电力科学研究院 A kind of soft homogeneous catalysis burner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114110658A (en) * 2021-11-19 2022-03-01 上海交通大学 Hydrogen fuel staged flameless combustion method and combustion device

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