CN209213925U - It is a kind of suitable for the low NOx drainage combustion chamber of synthesis gas and gas turbine engine systems - Google Patents
It is a kind of suitable for the low NOx drainage combustion chamber of synthesis gas and gas turbine engine systems Download PDFInfo
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- CN209213925U CN209213925U CN201821997937.0U CN201821997937U CN209213925U CN 209213925 U CN209213925 U CN 209213925U CN 201821997937 U CN201821997937 U CN 201821997937U CN 209213925 U CN209213925 U CN 209213925U
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- combustion chamber
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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
A kind of low NO suitable for synthesis gas provided by the utility modelxDischarge combustion chamber and gas turbine engine systems, the low heat value synthesis gas for entering combustion chamber body from first-stage burning device reduce flame temperature, reduce thermal NO in lean combustion zonal combustionxGeneration；From the second level, burner enters zonal combustion of the synthesis gas in slightly below chemically correct fuel of combustion chamber body, the burning that flue gas due to entering the region passes through the low heat value synthesis gas entered from first-stage burning device consumes a large amount of oxygen, its oxygen content substantially reduces, and generates NO when can reduce the zonal combustionxRate, and the mixed synthesis gas that the arrangement in the circumferential direction of second level burner can be more efficient be rich in oxygen flue gas, improve combustion stability and efficiency of combustion, reduce localized hyperthermia, be also beneficial to reduce thermal NOxGeneration；The utility model reduces NO while not influencing combustion stabilityxGeneration.
Description
Technical field
The utility model relates to technical field of gas turbine, in particular to a kind of low NO suitable for synthesis gasxDischarge combustion
Burn room and gas turbine engine systems.
Background technique
Gas turbine is the gas continuously to flow as the rotary vane type engine of working medium.Gas turbine by compressor,
Combustion chamber, the big main component of turbine etc. three composition.Compressor sucks air pressurized, while air themperature also correspondinglys increase, compression
Air is mixed and burned the gas for generating high temperature and pressure with fuel in the combustion chamber, enters back into turbine and turbine blade high speed is driven to revolve
Turn, to complete the process that the chemical energy of fuel is changed into useful work.In the combustion chamber, due to the high temperature that burning generates, meeting
Lead to a large amount of NOxIt generates, wherein most important NOxGeneration path is heating power type, i.e. N at a high temperature of being higher than 1500 DEG C2And O2Hair
Raw reaction, generating rate are mainly affected by temperature, in addition N2, O2Concentration and residence time etc. are to thermal NOxGeneration
There is certain influence.The promotion of gas turbine Brayton cycle efficiency, which relies primarily on, improves turbine entrance flue gas temperature, that is, mentions
High combustor exhaust temperature, however as the promotion of combustor exhaust temperature, combustion chamber mean temperature will also be greatly improved,
This will cause thermal NOxDischarge sharply increases.
Currently, the poor premixed combustion technology of dry type (Dry Low NO is widely used in gas turbine producerx, DLN) and reduce NOx
Discharge.DLN technology is uniformly premixed using excessive air with fuel, to reach homogenous combustion, eliminates the mode of localized hyperthermia
Reduce thermal NOxGeneration.Low-calorific-value gas turbine matched for integrated gasification combined cycle plants (IGCC), fuel are
Contain CO and H2Synthesis gas, both component combustion speed are inconsistent, be not suitable for premixed combustion, can only using diffusion combustion
Burning mode, therefore it is not available DLN technology.
Summary of the invention
The purpose of this utility model is to provide a kind of low NO suitable for synthesis gasxDischarge combustion chamber and gas turbine system
System, solves the matched low-calorific-value gas turbine of existing integrated gasification combined cycle plants, uncomfortable since its fuel is synthesis gas
For premixed combustion, cause in the combustion chamber temperature it is excessively high, and then generate a large amount of NOxThe problem of.
In order to achieve the above object, the technical solution adopted in the utility model is:
A kind of low NO suitable for synthesis gas provided by the utility modelxCombustion chamber, including combustion chamber body are discharged, it is described
Combustion chamber body is bottom opening, hollow structure with a closed top, wherein
The top of combustion chamber body inner cavity is along the circumferential direction evenly equipped with several first-stage burning devices, and its top is evenly equipped with
Several spray-holes；
First order fuel channel is provided in the inner cavity of first-stage burning device, one end connection of first order fuel channel is useful
In the mixer for mixing synthesis gas and vapor, the other end is communicated with the inner cavity of combustion chamber body；
Along the circumferential direction be evenly equipped with several second level burners on the side wall of combustion chamber body, second level burner it is interior
Second level fuel channel is provided in chamber, one end of the second level burning gallery is connected with synthesis gas pipeline, the other end and combustion
The inner cavity for burning room ontology communicates.
Preferably, the outside of combustion chamber body be provided with its be in arranged in concentric circles bearing shell, bearing shell it is interior
The vertical passageway of compressed air, bearing shell top inner wall and combustion chamber sheet are formed between side wall and the lateral wall of combustion chamber body
The horizontal channel of compressed air is formed between the top exterior walls of body, vertical passageway is communicated with horizontal channel.
Preferably, several air ducts, several described air duct edges are provided in the inner cavity of first-stage burning device
The circumferencial direction of first order fuel channel is uniformly distributed, and the circular configuration and first order fuel channel formed is in arranged in concentric circles；
One end of air duct is communicated with compressed air line, and the other end is communicated with the inner cavity of combustion chamber body.
Preferably, the end that air duct and first order fuel channel are passed through inner cavity one end of combustion chamber body is provided with
Cyclone.
Preferably, it is provided with a Secondary Air entrance below each second level burner, Secondary Air entrance is provided with combustion
On the side wall for burning room ontology, one end of Secondary Air entrance is communicated with compressed air line, the inner cavity of the other end and combustion chamber body
It communicates.
Preferably, regulating valve is provided on Secondary Air entrance.
Preferably, the end that second level fuel channel enters combustion chamber body one end is provided with cyclone.
Preferably, the normal direction of the axis of second level burner and second level burner in combustion chamber body inner sidewall opening
Between be provided with 10-25 ° of angle.
Preferably, the normal direction of the axis of second level burner and second level burner in combustion chamber body inner sidewall opening
Between angle be 18 °.
A kind of low NO suitable for synthesis gasxThe gas turbine engine systems of discharge, the gas turbine engine systems include combustion chamber sheet
Body, wherein the vertical passageway on combustion chamber body is connected with compressor, and the exhaust outlet of combustion chamber body is connected with turbine, described
Turbine is connect with compressor and generator respectively by axis.
Compared with prior art, the utility model has the beneficial effects that
A kind of low NO suitable for synthesis gas provided by the utility modelxCombustion chamber is discharged, partially synthetic gas injection water steams
Gas realizes the classification of fuel value, then hierarchical arrangement and reasonable fuel by burner, compressed air distribution burning
Chamber interior forms the combustion zone of different characteristics, specifically:
The low heat value synthesis gas for entering combustion chamber body from first-stage burning device reduces flame temperature in lean combustion zonal combustion
Degree, reduces thermal NOxGeneration；
From the second level, burner enters zonal combustion of the synthesis gas in slightly below chemically correct fuel of combustion chamber body, due to
The burning that flue gas into the region passes through the low heat value synthesis gas entered from first-stage burning device consumes a large amount of oxygen, oxygen
Content substantially reduces, and generates NO when can reduce the zonal combustionxRate, and second level burner is in the circumferential direction
The mixed synthesis gas that arrangement can be more efficient and the flue gas rich in oxygen, improve combustion stability and efficiency of combustion, drop
Di Liao localized hyperthermia is also beneficial to reduce the generation of thermal NO x；The utility model while not influencing combustion stability,
Reduce NOxGeneration.
Further, the high eddy flow that the cyclone of first-stage burning device end setting is formed, can generate certain reflux, mention
Synthesis gas has been risen in the residence time in the region, has facilitated the completely burned of synthesis gas.
Further, the high eddy flow that the cyclone of second level burner tip setting is formed, can generate certain reflux, mention
Synthesis gas has been risen in the residence time in the region, and has also improved CO and H in synthesis gas2Equal reducibility gas are to NOxReduction
Effect.
Further, the incident angle of second level burner and the gas cyclone direction phase formed by first-stage burning device
Instead, the mixing for facilitating the synthesis gas and the flue gas rich in oxygen that enhance to come in from second level burner, improves combustion stability
And efficiency of combustion, localized hyperthermia, while the region for making full use of oxygen concentration low are reduced, to reduce NOxGenerating rate.
Further, a certain amount of compressed air is introduced to combustion chamber body by Secondary Air entrance, it can be by whole combustions
Expect end of reaction, ultimately form high temperature and high pressure gas, does work into turbine expansion, the chemical energy of fuel is changed into turbine blade
The mechanical energy of rotation, drive shaft rotation, while driving compressor and generator, and it is defeated that some mechanical can be changed into electric energy by generator
Out.
Detailed description of the invention
Fig. 1 is the low NO suitable for synthesis gasxDischarge combustion chamber and gas turbine engine systems；
Fig. 2 is first-stage burning device arrangement schematic diagram；
Fig. 3 is second level burner arrangement schematic diagram；
Fig. 4 is Secondary Air entrance arrangement schematic diagram；
Fig. 5 is first-stage burning device schematic diagram；
Fig. 6 is planar velocity distribution where the burner of the second level；
Wherein, 11, first-stage burning device 12, second level burner 13, bearing shell 14, vertical passageway 15, compression
Air horizontal channel 16, heat-barrier material 17, Secondary Air entrance 18, synthesis gas and vapor mixer 20, air 21, pressure
Synthesis gas 25, combustion chamber high temperature are vented 26, turbine exhaust after contracting air 22, synthesis gas 23, vapor 24, water filling steam
30, compressor 31, combustion chamber 32, turbine 33, generator 34, axis 41, air duct 42, primary fuel channel 43, two
Grade fuel channel.
Specific embodiment
With reference to the accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of low NO suitable for synthesis gas provided by the utility modelxDischarge combustion chamber, including burning
Room ontology 31, the combustion chamber body 31 are bottom opening, hollow structure with a closed top, the inner sidewall of combustion chamber body 31
On be provided with thermal insulation layer 16, top is along the circumferential direction evenly equipped with several first-stage burning devices 11, meanwhile, combustion chamber body 31
Top be evenly equipped with several spray-holes.
The outside of combustion chamber body 31 is provided with the bearing shell 13 of circle arrangement concentric with it, the inner sidewall of bearing shell 13
Vertical passageway 14, top inner wall and the combustion chamber body 31 of bearing shell 13 are formed between the lateral wall of combustion chamber body 31
Horizontal channel 15 is formed between top exterior walls, vertical passageway 14 is communicated with horizontal channel 15.
As shown in Figures 2 to 5, first-stage burning device 11 is provided with eight, and circumferentially structure is evenly arranged on combustion chamber body 31
Top, and the distance in each first-stage burning device 11 to the 31 top center of circle of combustion chamber body is equal.
The first order fuel channel 42 of tubular structure, first order fuel channel are provided in the inner cavity of first-stage burning device 11
Its circumferencial direction of 42 outer lateral edge is evenly equipped with several air ducts 41, the circular configuration that several described air ducts 41 are formed
It is arranged with the circular shape concentric of first order fuel channel 42.
Several air inlets are offered on the side wall of first-stage burning device 11, the air inlet is for being connected to air duct 41
It is communicated with the free end of horizontal channel 15, the air duct 41 with the inner cavity of combustion chamber body 31.
One end end that air duct 41 and first order fuel channel 42 enter combustion chamber body 31 is provided with cyclone,
It is dynamic to generate high eddy flow, recirculating zone is formed to stablize flame.
Several second level burners 12, second level burner are along the circumferential direction evenly equipped on the side wall of combustion chamber body 31
12 are provided with eight, are evenly arranged on the side wall of combustion chamber body 31, and its end for entering combustion chamber body 31 and the normal direction at
Certain angle, 10-25 ° of angular range, preferably 18 °.
It is provided with the fuel channel of tubular structure in the inner cavity of the second level burner 12, enters combustion chamber body 31
One end end be provided with cyclone, it is dynamic to generate high eddy flow, form recirculating zone to stablize flame.
The lower section of each second level burner 12 is provided with a Secondary Air entrance 17, and Secondary Air entrance 17 is provided with burning
On the side wall of room ontology 31.
It is provided with regulating valve on Secondary Air entrance 17, passes through Secondary Air entrance 17 into combustion chamber body 31 for adjusting
21 flow of compressed air.
The open end of combustion chamber body 31 is throat structure, connects anisodiametric 31 He of combustion chamber body as changeover portion
Turbine 32.
The fuel point two-stage of combustion chamber body 31 enters, and first order fuel is through the mixed injection vapor of mixer 18
23 synthesis gas 24 enters combustion chamber body 31 from 11 internal Ll fuel channel 42 of first-stage burning device；Second level fuel
Then it is the synthesis gas 22 of unimplanted vapor, enters combustion chamber body 31 from 12 internal fuel passage of second level burner.
The primary process air of combustion chamber body 31 is also classified into two-stage, respectively from 11 internal air passageway of first-stage burning device
41 and Secondary Air entrance 17 enter combustion chamber body 31, the import of vertical passageway 14 is connected with compressor 30, combustion chamber body 31
Outlet connection 32 entrance of turbine, the outlet of turbine 32 can be directly discharged into atmosphere, can also enter waste heat boiler.The connection pressure of axis 34
Mechanism of qi 30, turbine 32, generator 33.
Working principle:
The arrogant aspiration of compressor 30, which enters air 20, becomes compressed air 21 by pressurization, and compressed air 21 flows through vertical passageway
14 pairs of combustion chamber bodies 31 play certain cooling effect, then by horizontal channel 15 through 11 inner air of first-stage burning device
Channel 41 is entered in a manner of eddy flow inside combustion chamber body 31.Fuel synthesis gas 22 divides for two-way, enters mixer 18 all the way
It being mixed with vapor 23, vapor and synthesis gas mass flow ratio are 0.4-0.6, preferably 0.55.Synthesis after filling the water steam
Gas 24 is entered inside combustion chamber body 31 through 11 internal Ll fuel channel 42 of first-stage burning device in a manner of eddy flow.Separately
Synthesis gas 22 is directly injected by 12 internal fuel passage of second level burner high speed then without mixer 18 all the way outside
Inside combustion chamber body 31, road synthesis throughput accounts for sum total into the 0-0.3 of throughput.Synthesis gas 24 and mistake after filling the water steam
It measures compressed air 21 to be mixed and burned, since the synthesis gas 24 after water filling steam is low compared with calorific value before not infusing and air capacity is much higher than
Amount needed for its completely burned, it is low when the maximum temperature of burning is compared with the syngas combustion for not filling the water steam, and then reduce heating power
Type NOxFormation, and burn consume oxygen, in the gas formed after burning oxygen content reduce.From second level burner 12
Although the synthesis gas 22 of entrance, due to being not injected into vapor and calorific value is higher, its position for entering combustion chamber body 31 is low
In first-stage burning device 11, the burning for the fuel that the oxygen content in flue gas is entered due to first-stage burning device 11 at this time and drop
It is low.As shown in fig. 6, burner 12 incident angle in the second level is contrary with the gas cyclone formed by first-stage burning device 11,
The mixing for helping to enhance the synthesis gas and the flue gas rich in oxygen come in from second level burner 12, improve combustion stability and
Efficiency of combustion reduces localized hyperthermia, while the region for making full use of oxygen concentration low, to reduce NOxGenerating rate.In addition
Due to containing CO, H in synthesis gas2Equal reducibility gas, the NO generated for the fuel combustion entered from first-stage burning device 11x
Certain reduction can be played.The cyclone that the end that second level burner 12 enters combustion chamber body 31 is arranged will form one
Fixed reflux promotes synthesis gas in the residence time in the region to promote burning complete.Finally by being arranged in combustion chamber body
The Secondary Air entrance 17 of 31 vertical wall surface lower parts introduces a certain amount of compressed air to combustion chamber body 31, and whole fuel are anti-
It should finish, ultimately form high temperature and high pressure gas 25.The exhaust combustion chamber 25 of high temperature and pressure expansion work in turbine 32, by fuel
Chemical energy be changed into the mechanical energy of turbine blade rotation, drive shaft 34 rotates, while driving compressor 30 and generator 33, send out
Some mechanical can be changed into power output by motor 33.
In the case where total air is certain, the adjusting valve regulation Secondary Air stream of the configuration of Secondary Air entrance 17 can be passed through
Amount, and then adjust and enter the compressed air require of combustion chamber body 31 from first-stage burning device 11 to adapt to the change of fuel element
Change, control first-stage burning device 11 enters the compressed air require and whole syngas combustion required air quantities of combustion chamber body 31
The ratio between 0.96-0.99.
Claims (10)
1. a kind of low NO suitable for synthesis gasxDischarge combustion chamber, which is characterized in that including combustion chamber body (31), the burning
Room ontology (31) is bottom opening, hollow structure with a closed top, wherein
The top of combustion chamber body (31) inner cavity is along the circumferential direction evenly equipped with several first-stage burning devices (11), and its top is
It is furnished with several spray-holes；
It is provided in the inner cavity of first-stage burning device (11) first order fuel channel (42), one end of first order fuel channel (42)
It is connected with the mixer (18) for mixing synthesis gas and vapor, the inner cavity phase of the other end and combustion chamber body (31)
It is logical；
Several second level burners (12), second level burner are along the circumferential direction evenly equipped on the side wall of combustion chamber body (31)
(12) second level fuel channel is provided in inner cavity, one end of the second level burning gallery is connected with synthesis gas pipeline, separately
One end is communicated with the inner cavity of combustion chamber body (31).
2. a kind of low NO suitable for synthesis gas according to claim 1xDischarge combustion chamber, which is characterized in that combustion chamber sheet
The outside of body (31) is provided with the bearing shell (13) with it in arranged in concentric circles, the inner sidewall of bearing shell (13) and combustion chamber
The vertical passageway (14) of compressed air, bearing shell (13) top inner wall and combustion chamber sheet are formed between the lateral wall of ontology (31)
The horizontal channel (15) of compressed air, vertical passageway (14) and horizontal channel (15) phase are formed between the top exterior walls of body (31)
It is logical.
3. a kind of low NO suitable for synthesis gas according to claim 1xDischarge combustion chamber, which is characterized in that first order combustion
Several air ducts (41) are provided in the inner cavity of burner (11), several described air ducts (41) are logical along first order fuel
The circumferencial direction in road (42) is uniformly distributed, and the circular configuration formed and first order fuel channel (42) are in arranged in concentric circles；
One end of air duct (41) is communicated with compressed air line, and the other end is communicated with the inner cavity of combustion chamber body (31).
4. a kind of low NO suitable for synthesis gas according to claim 3xDischarge combustion chamber, which is characterized in that air duct
(41) and the end of first order fuel channel (42) inner cavity one end for being passed through combustion chamber body (31) is provided with cyclone.
5. a kind of low NO suitable for synthesis gas according to claim 1xDischarge combustion chamber, which is characterized in that each second
It is provided with a Secondary Air entrance (17) below grade burner (12), Secondary Air entrance (17) is provided with combustion chamber body (31)
Side wall on, one end of Secondary Air entrance (17) is communicated with compressed air line, the inner cavity of the other end and combustion chamber body (31)
It communicates.
6. a kind of low NO suitable for synthesis gas according to claim 5xDischarge combustion chamber, which is characterized in that Secondary Air enters
Regulating valve is provided on mouth (17).
7. a kind of low NO suitable for synthesis gas according to claim 5xDischarge combustion chamber, which is characterized in that second level combustion
The end that material channel enters combustion chamber body (31) one end is provided with cyclone.
8. a kind of low NO suitable for synthesis gas described in any one of -7 according to claim 1xCombustion chamber is discharged, feature exists
In, second level burner (12) axis and second level burner (12) combustion chamber body (31) inner sidewall opening normal direction
Between be provided with 10-25 ° of angle.
9. a kind of low NO suitable for synthesis gas according to claim 8xDischarge combustion chamber, which is characterized in that second level combustion
Angle of the axis and second level burner (12) of burner (12) between the normal direction of combustion chamber body (31) inner sidewall opening
It is 18 °.
10. a kind of low NO suitable for synthesis gasxThe gas turbine engine systems of discharge, which is characterized in that the gas turbine engine systems include
Combustion chamber body (31) of any of claims 1-9, wherein the vertical passageway (14) on combustion chamber body (31) is even
It is connected to compressor (30), the exhaust outlet of combustion chamber body (31) is connected with turbine (32), and the turbine (32) passes through axis (34) point
It is not connect with compressor (30) and generator (33).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821997937.0U CN209213925U (en) | 2018-11-28 | 2018-11-28 | It is a kind of suitable for the low NOx drainage combustion chamber of synthesis gas and gas turbine engine systems |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821997937.0U CN209213925U (en) | 2018-11-28 | 2018-11-28 | It is a kind of suitable for the low NOx drainage combustion chamber of synthesis gas and gas turbine engine systems |
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| Publication Number | Publication Date |
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| CN209213925U true CN209213925U (en) | 2019-08-06 |
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ID=67462324
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214506A (en) * | 2022-02-21 | 2022-03-22 | 山西太钢不锈钢精密带钢有限公司 | Low-nitrogen combustion method for vertical annealing furnace |
-
2018
- 2018-11-28 CN CN201821997937.0U patent/CN209213925U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214506A (en) * | 2022-02-21 | 2022-03-22 | 山西太钢不锈钢精密带钢有限公司 | Low-nitrogen combustion method for vertical annealing furnace |
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