CN107433131A - A kind of gas turbine denitration ammonia-gas spraying device and gas turbine - Google Patents
A kind of gas turbine denitration ammonia-gas spraying device and gas turbine Download PDFInfo
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- CN107433131A CN107433131A CN201710697093.1A CN201710697093A CN107433131A CN 107433131 A CN107433131 A CN 107433131A CN 201710697093 A CN201710697093 A CN 201710697093A CN 107433131 A CN107433131 A CN 107433131A
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- Prior art keywords
- pipe
- gas turbine
- spraying device
- input pipe
- gas
- 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.)
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000005507 spraying Methods 0.000 title claims abstract description 30
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 40
- 239000007921 spray Substances 0.000 claims description 22
- 230000008859 change Effects 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 30
- 239000007789 gas Substances 0.000 abstract description 29
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003546 flue gas Substances 0.000 abstract description 10
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 238000000889 atomisation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 7
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 208000032767 Device breakage Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Chimneys And Flues (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The present invention relates to a kind of gas turbine denitration ammonia-gas spraying device and gas turbine, out of stock ammonia-gas spraying device includes playpipe, atomized air tube and atomizer, and atomized air tube is set in outside playpipe and forms a toroidal cavity between injection pipe outer wall；The both ends of playpipe are respectively arrival end and the port of export, and the both ends of atomized air tube are respectively to block end and openend, and the port of export and openend are concordant and be connected with atomizer, and arrival end passes from closure end；Atomized air tube side wall offers the atomizing air inlets connected with toroidal cavity close to the position of the port of export.Ammoniacal liquor can be injected in the exhaust uptake of gas turbine by the present invention after atomization, after being sufficiently mixed with flue gas, it can fully be reacted with the nitrogen oxides in combustion turbine exhaustion flue, the concentration of nitrogen oxides effectively be reduced, so that combustion turbine exhaustion meets environmental requirement.
Description
Technical field
The present invention relates to gas turbine technology field, and in particular to a kind of gas turbine denitration ammonia-gas spraying device and combustion gas wheel
Machine.
Background technology
Beijing DB11/847-2011《Land-based gas turbine engine atmosphere pollutants emission standardses》Middle requirement, Beijing are existing
There is the NO in exhaust-heat boiler flue gas from 1 day July in 2014 for not installing equipment for denitrifying flue gas in gas turbinexDischarge capacity is less than
30mg/Nm3.NO in existing combustion engine flue gas dischargexMost of discharge capacity is not up to standard.
The content of the invention
The technical problems to be solved by the invention are in view of the shortcomings of the prior art, there is provided ammonia is sprayed in a kind of gas turbine denitration
Device and gas turbine.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of gas turbine denitration ammonia-gas spraying device, including spray
Penetrate pipe, atomized air tube and atomizer, the atomized air tube be set in the playpipe it is outer and with the injection pipe outer wall
Between form a toroidal cavity；The both ends of the playpipe are respectively arrival end and the port of export, the both ends of the atomized air tube
Respectively closure end and openend, the port of export and the openend are concordant and are connected with the atomizer, described
Arrival end passes from the closure end；The atomized air tube side wall offers and the annular close to the position of the port of export
The atomizing air inlets of cavity connection.
The beneficial effects of the invention are as follows：The present invention, can be by ammonia by setting playpipe, atomized air tube and atomizer
Water is injected in the exhaust uptake of gas turbine after atomization, and the dense of nitrogen oxides can be effectively reduced after being sufficiently mixed with flue gas
Degree；Reducing agent ammoniacal liquor can be transported in gas turbine tail flue and spray and nebulize by denitration ammonia-gas spraying device, can fully with
Nitrogen oxides in combustion turbine exhaustion flue is reacted, and effectively reduces the amount of nitrogen oxides in gas turbine, so as to
Combustion turbine exhaustion is set to meet environmental requirement.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, in addition to cooling air input pipe, the cooling air input pipe are set in outside the atomized air tube
Side simultaneously forms a cooling gap between the outer wall of the atomized air tube, and the cooling air input pipe side wall enters described in
The position at mouth end offers the cooling air intake being connected with the cooling gap.
It is using the above-mentioned further beneficial effect of scheme：, can be to atomized air tube by setting cooling air input pipe
And playpipe cools down, ammoniacal liquor can be avoided to gasify to form vapour lock because of high temperature in playpipe.
Further, the cooling air input pipe includes the first input pipe and the second input pipe, the cooling air intake
On first input pipe；One end of first input pipe is provided with first flange, and the other end is provided with second flange；It is described
One end of second input pipe is provided with the 3rd flange, and the first flange blocks the position phase at end with the atomized air tube close to it
Connection, the second flange are connected with the 3rd flange, and the other end of second input pipe is set close to the openend
Put；The atomizer stretches out from second input pipe.
It is using the above-mentioned further beneficial effect of scheme：It is dismantled and assembled by setting the first input pipe and the second input pipe.
Further, in addition to insulating tube and guide pipe, the heat-insulating cover be located at the outside of second input pipe and with
A heat-insulatied slit is formed between second input pipe, insulation material is filled with the heat-insulatied slit；
Described insulating tube one end is fixedly connected with described second input pipe one end, and the other end of the insulating tube is closure
End, the insulating tube side wall offer spout close to the position at the closure end, and one end of the guide pipe is set in described the
Two input pipes are on one end outer wall of the spout, and its other end is welded on the inwall of the spout after the guide pipe bending
On, the atomizer is located in the guide pipe and is correspondingly arranged with the spout.
It is using the above-mentioned further beneficial effect of scheme：By setting insulating tube and guide pipe, effectively isolation can be made outer
The high-temperature flue gas in portion, playpipe temperature is avoided to raise, it is liquid condition before ejection to keep ammoniacal liquor；Guide pipe can ensure to be atomized
The injection direction of shower nozzle.
Further, the guide pipe includes the guide section and positioning section of integrally connected, and the positioning section is set in described
It is slidably connected in two input sections and therewith, described guide section one end and described positioning section one end integrally connected, the guide section are another
One end is welded on the inwall of the spout, and side wall of the guide section close to insulating tube closure end is inclined-plane.
It is using the above-mentioned further beneficial effect of scheme：It is inclined-plane by setting guide section, avoids remaining in guide pipe
Ammoniacal liquor.
Further, in addition to thermocouple, the thermocouple are located in the cooling gap and are fixed on by multiple clips
In the atomized air tube, length direction of the thermocouple along the playpipe is laid.
It is using the above-mentioned further beneficial effect of scheme：By setting thermocouple, playpipe internal temperature can be carried out
Monitoring in real time.
Further, in addition to air compressor machine and ammoniacal liquor feedway, the openend of the atomized air tube and cooling air are defeated
The cooling air intake for entering pipe is connected with the air compressor machine respectively, the arrival end of the ammoniacal liquor feedway and the playpipe
It is connected.
It is using the above-mentioned further beneficial effect of scheme：It is convenient to atomized air tube and cooling by setting air compressor machine
Input air in air hose.
A kind of gas turbine, including multiple denitration ammonia-gas spraying devices as described above and exhaust casing, the side wall of the exhaust casing
On offer multiple mounting holes, spray gun sleeve pipe is welded with the mounting hole, described spray gun sleeve pipe one end is provided with the 4th flange, institute
The one end of spray gun sleeve pipe provided with the 4th flange is stated to be located on the outside of exhaust casing；The denitration ammonia-gas spraying device is plugged on the spray gun sleeve pipe
Interior, the 4th flange is connected with the lateral wall of the denitration ammonia-gas spraying device；The denitration ammonia-gas spraying device is provided with atomizer
One end be located in the exhaust casing.
The beneficial effects of the invention are as follows：The gas turbine of the present invention can be using as the ammoniacal liquor of reducing agent mist in liquid form
Sprayed into after change in the exhaust uptake of gas turbine, and be unlikely to be gasified before ammoniacal liquor sprays, and by setting multiple denitrations to spray
Ammonia device, can make the exhaust uptake of gas turbine each site flue gas with reducing agent is full and uniform mixes, be direct-injection ammonia
Reducing process reduces nitrogen oxides in effluent and provides reliable equipment guarantee.The gas turbine of the present invention can also change injection online
Pipe, playpipe can be extracted out and changed by emerged in operation emergency case, very convenient.
Further, in addition to bracing piece, one end of the bracing piece are welded on the inwall of the exhaust casing, other end weldering
It is connected on the outside at the insulating tube closure end.
It is using the above-mentioned further beneficial effect of scheme：By setting bracing piece, avoid because unit vibrations cause spray ammonia
Device fracture of root.
Brief description of the drawings
Fig. 1 is the main structure diagram of the denitration ammonia-gas spraying device of the present invention；
Fig. 2 is Fig. 1 A-A faces diagram；
Fig. 3 is the mplifying structure schematic diagram in A portions in Fig. 2；
Fig. 4 is the mplifying structure schematic diagram in B portions in Fig. 2；
Fig. 5 is Fig. 1 B-B faces diagram；
Fig. 6 is Fig. 2 C-C faces diagram；
Fig. 7 is the dimensional structure diagram of the exhaust casing of the gas turbine of the present invention；
Fig. 8 is the axle side diagram of the exhaust casing of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, playpipe；2nd, atomized air tube；21st, toroidal cavity；22nd, atomizing air inlets；23rd, ring flange；3rd, atomization spray
Head；4th, cooling air input pipe；41st, cooling gap；42nd, the first input pipe；43rd, the second input pipe；44th, first flange；45th,
Two flanges；46th, the 3rd flange；47th, cooling air intake；5th, insulating tube；51st, spout；52nd, heat-insulatied slit；6th, guide pipe；61、
Guide section；62nd, positioning section；7th, thermocouple；71st, clip；8th, exhaust casing；81st, bracing piece；9th, spray gun sleeve pipe；91st, the 4th flange.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Embodiment 1
As shown in figs 1 to 6, a kind of gas turbine denitration ammonia-gas spraying device of the present embodiment, including playpipe 1, atomizing air
Pipe 2 and atomizer 3, the atomized air tube 2 are set in outside the playpipe 1 and formed between the outer wall of playpipe 1
One toroidal cavity 21；The both ends of the playpipe 1 are respectively arrival end and the port of export, and the both ends of the atomized air tube 2 are distinguished
For closure end and openend, the port of export and the openend are concordant and be connected with the atomizer 3, the entrance
End passes from the closure end；The side wall of atomized air tube 2 offers empty with the annular close to the position of the port of export
The atomizing air inlets 22 that chamber 21 connects.The atomized air tube 2 is vertically installed with ring flange 23, mist close to the position at closure end
Change the center that air hose 2 passes perpendicularly through the ring flange 23.
As shown in figs 1 to 6, the present embodiment also includes cooling air input pipe 4, and the cooling air input pipe 4 is set in
The outside of atomized air tube 2 simultaneously forms a cooling gap 41, the cooling air between the outer wall of the atomized air tube 2
The side wall of input pipe 4 offers the cooling air intake 47 being connected with the cooling gap 41 close to the position of the arrival end.
By setting cooling air input pipe, atomized air tube and playpipe can be cooled down, ammoniacal liquor can be avoided to spray
Gasify to form vapour lock because of high temperature in pipe.
As shown in Figures 2 and 3, the cooling air input pipe 4 includes the first input pipe 42 and the second input pipe 43, described
Cooling air intake 47 is located on first input pipe 42；One end of first input pipe 42 is provided with first flange 44, separately
One end is provided with second flange 45；One end of second input pipe 43 is provided with the 3rd flange 46, the first flange 44 with it is described
Atomized air tube 2 blocks the position at end close to it and is connected, i.e., is connected with the ring flange 23 in the atomized air tube 2 by bolt
Connect；The second flange 45 is connected with the 3rd flange 46 by bolt, and the other end of second input pipe 43 is close
The openend is set；The atomizer 3 stretches out from second input pipe 43.
As shown in figs 2-4, the present embodiment also includes insulating tube 5 and guide pipe 6, and the insulating tube 5 is set in described
The outside of two input pipes 43 simultaneously forms a heat-insulatied slit 52 between second input pipe 43, is filled in the heat-insulatied slit 52
There is insulation material；
As shown in figs 2-4, described one end of insulating tube 5 is fixedly connected with described one end of second input pipe 43, the insulation
The other end of pipe 5 is closure end, and the side wall of insulating tube 5 offers spout 51, the guiding close to the position at the closure end
One end of pipe 6 is set in second input pipe 43 on one end outer wall of the spout 51, after the guide pipe 6 is bent its
The other end is welded on the inwall of the spout 51, and the atomizer 3 is located in the guide pipe 6 and right with the spout 51
It should set.By setting insulating tube and guide pipe, the high-temperature flue gas effectively outside isolation can be made, avoid playpipe temperature from raising,
It is liquid condition before ejection to keep ammoniacal liquor；Guide pipe can ensure the injection direction of atomizer.
As shown in figure 4, the guide pipe 6 of the present embodiment includes the guide section 61 and positioning section 62 of integrally connected, it is described
Positioning section 62 is set on second input pipe 43 and is slidably connected therewith, described one end of guide section 61 and the positioning section 62
One end integrally connected, the other end of guide section 61 are welded on the inwall of the spout 51, and the guide section 61 is close to described
The side wall that insulating tube 5 blocks end is inclined-plane.Being slidably socketed for the input pipe 43 of positioning section 62 and second can facilitate the second input
Pipe 43 takes out and changed out of described insulating tube 5, is inclined-plane by setting guide section, avoids residual ammoniacal liquor in guide pipe.
As shown in figs 2-4, the present embodiment also includes thermocouple 7, and the thermocouple 7 is located in the cooling gap 41 simultaneously
It is fixed on by multiple clips 71 in the atomized air tube 2, length direction of the thermocouple 7 along the playpipe 1 is laid,
One end of the thermocouple 7 is set close to the spout 51, and the other end passes from the ring flange 23；By setting thermocouple,
Playpipe internal temperature can be monitored in real time.
The present embodiment also includes air compressor machine and ammoniacal liquor feedway, the openend of the atomized air tube 2 and cooling air
The cooling air intake 47 of input pipe 4 is connected with the air compressor machine respectively, the ammoniacal liquor feedway and the playpipe 1
Arrival end is connected.By setting air compressor machine, the convenient input air into atomized air tube and cooling air pipe.
Ammoniacal liquor can be injected to combustion by the application by setting playpipe, atomized air tube and atomizer after atomization
In the exhaust uptake of gas-turbine, the concentration of nitrogen oxides can be effectively reduced after being sufficiently mixed with flue gas；Denitration ammonia-gas spraying device can
Reducing agent ammoniacal liquor is transported in gas turbine tail flue and sprayed and is nebulized, can fully with combustion turbine exhaustion flue
Nitrogen oxides is reacted, and effectively reduces the amount of nitrogen oxides in gas turbine, so that combustion turbine exhaustion meets ring
Guaranteed request.
Embodiment 2
As shown in Figure 7 and Figure 8, a kind of gas turbine of the present embodiment, including multiple spray ammonia of denitration as described in Example 1
Device and exhaust casing 8, multiple mounting holes are offered in the side wall of the exhaust casing 8, spray gun sleeve pipe is welded with the mounting hole
9, described one end of spray gun sleeve pipe 9 is provided with the 4th flange 91, and one end that the spray gun sleeve pipe 9 is provided with the 4th flange 91 is located at exhaust casing
8 outsides；The denitration ammonia-gas spraying device is plugged in the spray gun sleeve pipe 9, the 4th flange 91 and the denitration ammonia-gas spraying device
Lateral wall be connected；One end that the denitration ammonia-gas spraying device is provided with atomizer 3 is located in the exhaust casing 8.Described 4th
Flange is specifically connected with the 3rd flange by bolt.The gas turbine of the present embodiment can be using as the ammoniacal liquor of reducing agent
Sprayed into after being atomized in liquid form in the exhaust uptake of gas turbine, and be unlikely to be gasified before ammoniacal liquor sprays, and by setting
Multiple denitration ammonia-gas spraying devices are put, the flue gas in each site of the exhaust uptake of gas turbine and reducing agent can be made full and uniform mixed
Close, reducing nitrogen oxides in effluent for direct-injection ammonia reducing process provides reliable equipment guarantee.The gas turbine of the present embodiment is also
Playpipe can be changed online, and playpipe can be extracted out and changed by emerged in operation emergency case, very convenient.
As shown in fig. 7, the present embodiment also includes bracing piece 81, one end of the bracing piece 81 is welded on the exhaust casing 8
Inwall on, the other end is welded on the outside that the insulating tube 5 blocks end.By setting bracing piece, avoid because unit vibrations are drawn
Play ammonia-gas spraying device fracture of root.Described bracing piece one end is directly welded on the inwall of the exhaust casing, the bracing piece it is another
One end is welded on the outside at the closure end of the insulating tube.When in use, can be directly by the if necessary to change playpipe
Two flanges and the 3rd flange are taken apart so that the first input pipe, atomized air tube and playpipe take out out of insulating tube.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (9)
1. a kind of gas turbine denitration ammonia-gas spraying device, it is characterised in that including playpipe, atomized air tube and atomizer, institute
Atomized air tube is stated to be set in outside the playpipe and form a toroidal cavity between the injection pipe outer wall；The playpipe
Both ends be respectively arrival end and the port of export, the both ends of the atomized air tube are respectively to block end and openend, the outlet
Hold and the openend is concordant and is connected with the atomizer, the arrival end passes from the closure end；The mist
Change air hose side wall and the atomizing air inlets connected with the toroidal cavity are offered close to the position of the port of export.
2. a kind of gas turbine denitration ammonia-gas spraying device according to claim 1, it is characterised in that also inputted including cooling air
Pipe, the cooling air input pipe are set on the outside of the atomized air tube and formed between the outer wall of the atomized air tube
One cooling gap, the cooling air input pipe side wall offers close to the position of the arrival end to be connected with the cooling gap
Logical cooling air intake.
A kind of 3. gas turbine denitration ammonia-gas spraying device according to claim 2, it is characterised in that the cooling air input pipe
Including the first input pipe and the second input pipe, the cooling air intake is located on first input pipe；First input
One end of pipe is provided with first flange, and the other end is provided with second flange；One end of second input pipe is provided with the 3rd flange, described
First flange blocks the position at end close to it with the atomized air tube and is connected, the second flange and the 3rd flange phase
Connection, the other end of second input pipe are set close to the openend；The atomizer is stretched from second input pipe
Go out.
4. a kind of gas turbine denitration ammonia-gas spraying device according to claim 3, it is characterised in that also including insulating tube and guiding
Pipe, the heat-insulating cover are located at the outside of second input pipe and form a heat-insulatied slit between second input pipe,
Insulation material is filled with the heat-insulatied slit；
Described insulating tube one end is fixedly connected with described second input pipe one end, and the other end of the insulating tube is to block end, institute
State insulating tube side wall and offer spout close to the position at the closure end, one end of the guide pipe is set in second input
Pipe is on one end outer wall of the spout, and its other end is welded on the inwall of the spout after the guide pipe bending, institute
Atomizer is stated to be located in the guide pipe and be correspondingly arranged with the spout.
5. a kind of gas turbine denitration ammonia-gas spraying device according to claim 4, it is characterised in that the guide pipe includes one
The guide section and positioning section of connection, the positioning section are set in second input section and are slidably connected therewith, the guiding
Duan Yiduan and described positioning section one end integrally connected, the guide section other end is welded on the inwall of the spout, described to lead
Side wall to the close insulating tube closure end of section is inclined-plane.
6. according to a kind of any one of claim 2 to 5 gas turbine denitration ammonia-gas spraying device, it is characterised in that also include heat
Galvanic couple, the thermocouple are located in the cooling gap and are fixed on by multiple clips in the atomized air tube, the heat
Length direction of the galvanic couple along the playpipe is laid.
7. according to a kind of any one of claim 2 to 5 gas turbine denitration ammonia-gas spraying device, it is characterised in that also include sky
Press and ammoniacal liquor feedway, the openend of the atomized air tube and the cooling air intake of cooling air input pipe respectively with
The air compressor machine is connected, and the ammoniacal liquor feedway is connected with the arrival end of the playpipe.
8. a kind of gas turbine, it is characterised in that including multiple denitration ammonia-gas spraying devices as described in any one of claim 1 to 7
And exhaust casing, multiple mounting holes are offered in the side wall of the exhaust casing, and spray gun sleeve pipe, the spray are welded with the mounting hole
Holster pipe one end is provided with the 4th flange, and one end that the spray gun sleeve pipe is provided with the 4th flange is located on the outside of exhaust casing；The denitration
Ammonia-gas spraying device is plugged in the spray gun sleeve pipe, and the 4th flange is connected with the lateral wall of the denitration ammonia-gas spraying device；Institute
The one end of denitration ammonia-gas spraying device provided with atomizer is stated to be located in the exhaust casing.
9. a kind of gas turbine according to claim 8, it is characterised in that also including bracing piece, one end of the bracing piece
It is welded on the inwall of the exhaust casing, the other end is welded on the outside at the insulating tube closure end.
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| CN207221706U (en) * | 2017-08-15 | 2018-04-13 | 北京京丰燃气发电有限责任公司 | A kind of gas turbine denitration ammonia-gas spraying device and gas turbine |
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| JP2010054083A (en) * | 2008-08-26 | 2010-03-11 | Babcock Hitachi Kk | Denitration device |
| CN103657385A (en) * | 2012-09-10 | 2014-03-26 | 杨建华 | Double-atomization spray gun for SNCR (selective non-catalytic reduction) denitration system |
| CN104056542A (en) * | 2014-06-09 | 2014-09-24 | 广西壮族自治区建筑材料科学研究设计院 | SNCR (selective non-catalytic reduction) denitration method and SNCR denitration device |
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| CN107433131B (en) | 2024-03-19 |
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