CN208703909U - A kind of PNCR boiler smoke abatement equipment - Google Patents
A kind of PNCR boiler smoke abatement equipment Download PDFInfo
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- CN208703909U CN208703909U CN201821178384.6U CN201821178384U CN208703909U CN 208703909 U CN208703909 U CN 208703909U CN 201821178384 U CN201821178384 U CN 201821178384U CN 208703909 U CN208703909 U CN 208703909U
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- reducing agent
- boiler
- pipeline
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- input terminal
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- 239000000779 smoke Substances 0.000 title claims abstract description 61
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 243
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 88
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 88
- 238000002156 mixing Methods 0.000 claims abstract description 61
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003546 flue gas Substances 0.000 claims abstract description 29
- 239000000571 coke Substances 0.000 claims abstract description 28
- 239000000428 dust Substances 0.000 claims abstract description 28
- 238000009792 diffusion process Methods 0.000 claims description 46
- 238000002485 combustion reaction Methods 0.000 claims description 26
- 239000008187 granular material Substances 0.000 claims description 25
- 238000005273 aeration Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000006477 desulfuration reaction Methods 0.000 claims description 6
- 230000023556 desulfurization Effects 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 15
- 239000000203 mixture Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 241001212038 Arcola Species 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
A kind of PNCR boiler smoke abatement equipment, it is related to industrial furnace denitrating flue gas field.The utility model technical issues that need to address are that the reducing agent in existing out of stock system is unable to fully a variety of situations that the coke utilized, in flying dust generates waste with the discharge of flue gas.Remaining carbon capture device is separately connected remaining carbon self-unloading pipe, on boiler induced-draft fan, and the output end of boiler induced-draft fan is connected with the input terminal of neat stress pipeline, and the output end of neat stress pipeline is connected with the input terminal of conveying fan；The input terminal of reducing agent mixing bunker is connected to the output end of remaining carbon self-unloading pipe and reducing agent loads on the output end of pipeline, the output end of reducing agent mixing bunker is connected with the reducing agent input terminal of reducing agent injector, the neat stress input terminal of reducing agent injector is connected with the output end of conveying fan, the reducing agent output end of reducing agent injector is connected with the input terminal of reducing agent Pneumatic conveying pipeline, and the output end of reducing agent Pneumatic conveying pipeline is connected with boiler furnace.
Description
Technical field
The utility model relates to industrial furnace denitrating flue gas field more particularly to a kind of PNCR boiler smoke abatement equipments.
Background technique
Denitration, which refers to the process of, removes denitrification in combustion product gases.To prevent from generating excessive nitrogen in boiler after coal combustion
Oxide contaminant environment should carry out denitration process to flue gas.It is existing with the continuous improvement of smoke pollution of boiler object discharge standard
There are more and more limitations in gas denitrifying technology.The reducing agent in out of stock system in the currently known field can not
It makes full use of, the coke in flying dust generates a variety of situations of waste with the discharge of flue gas.
Utility model content
The utility model technical issues that need to address are: the reducing agent in existing out of stock system is unable to fully utilize, fly
Coke in ash generates a variety of situations of waste with the discharge of flue gas.And then it provides a kind of with capture coke granule dress
Set and make the clean-burning PNCR boiler smoke abatement equipment of reducing agent.
The utility model to solve above-mentioned technical problem the technical solution adopted is that: the described PNCR boiler smoke improvement is set
Standby includes: boiler furnace, boiler induced-draft fan, neat stress pipeline, conveying fan, reducing agent filling pipeline, reducing agent injector
With reducing agent Pneumatic conveying pipeline；It is characterized by: the PNCR boiler smoke abatement equipment further include remaining carbon capture device, it is remaining
Carbon self-unloading pipe and reducing agent mixing bunker；
The input terminal of remaining carbon capture device is connected at the smoke outlet of boiler, the coke granule output end connection of remaining carbon capture device
On the input terminal of remaining carbon self-unloading pipe, the flue gas output end of remaining carbon capture device is connected on the input terminal of boiler induced-draft fan, boiler
The output end of air-introduced machine is connected with the input terminal of neat stress pipeline, the output end of neat stress pipeline and the input terminal of conveying fan
It is connected；The input terminal of reducing agent mixing bunker is connected to the output of the output end and reducing agent filling pipeline of remaining carbon self-unloading pipe
On end, the output end of reducing agent mixing bunker is connected with the reducing agent input terminal of reducing agent injector, reducing agent injector it is net
Flue gas input terminal is connected with the output end of conveying fan, the reducing agent output end and reducing agent pneumatic conveying of reducing agent injector
The input terminal of pipeline is connected, and the output end of reducing agent Pneumatic conveying pipeline is connected with boiler furnace.
Preferably, the PNCR boiler smoke abatement equipment further include: remaining carbon storage silo, remaining carbon bucket level-sensing device, remaining carbon
Discharge valve and remaining carbon measure discharge valve；The coke granule exit of remaining carbon capture device is arranged in remaining carbon storage silo；Remaining carbon discharge valve
It is successively set on the output end of remaining carbon storage silo with remaining carbon metering discharge valve；Coke granule passes through remaining carbon discharge valve and remaining carbon meter
Amount discharge valve is quantitatively transported in reducing agent mixing bunker；Remaining carbon bucket level-sensing device is arranged in remaining carbon storage silo.
Preferably, the PNCR boiler smoke abatement equipment further include: reducing agent storage warehouse, reducing agent discharge valve and also
Former agent metering screw conveyer；Reducing agent storage warehouse loads pipeline with reducing agent respectively and reductant metering screw conveyor is connected
It connects, reducing agent discharge valve is arranged between the output end of reducing agent storage warehouse and the input terminal of reductant metering screw conveyor
On pipeline, the output end of reductant metering screw conveyor is connected with the input terminal of reducing agent mixing bunker；Reducing agent storage warehouse
In reducing agent be quantitatively transported in reducing agent mixing bunker by reducing agent discharge valve and reductant metering screw conveyor.
Preferably, the PNCR boiler smoke abatement equipment further includes desulphurization plant；Desulphurization plant input terminal is connected to
On boiler induced-draft fan output end, desulphurization plant output end connects the input terminal of neat stress pipeline, and the flue gas of desulfurization passes through neat stress
Pipeline and conveying fan as enhanced reducing agent carrier by reducing agent Pneumatic conveying pipeline together with enhanced reducing agent
It is transported in boiler combustion room.
Preferably, the PNCR boiler smoke abatement equipment further includes boiler dust remover, reducing agent storehouse deduster and removes
Dirt exhaust valve；The input terminal of boiler dust remover is connected on remaining carbon capture device flue gas output end, and the output end of boiler dust remover connects
It connects on the input terminal of boiler induced-draft fan, reducing agent storehouse deduster is connected to the upper end of reducing agent storage warehouse, the setting of dedusting exhaust valve
On the channel that reducing agent storehouse deduster is connected with neat stress pipeline；Dust in reducing agent is removed by reducing agent storehouse deduster
Dirt, and be discharged in neat stress pipeline by dedusting exhaust valve, the opening and closing of reducing agent storehouse deduster is controlled by dedusting exhaust valve；Pot
The flue gas being discharged in furnace is entered in boiler dust remover by remaining carbon capture device to be dusted.
Preferably, the PNCR boiler smoke abatement equipment further includes mixing bunker metering discharge valve, mixing bunker discharge valve
With mixing bunker blender, mixing bunker discharge valve and mixing bunker measure the output end that discharge valve is successively set on reducing agent mixing bunker
On, enhanced reducing agent, which measures discharge valve weight feed into reducing agent injector by mixing bunker discharge valve and mixing bunker, to be enhanced
Type reducing agent；Mixing bunker blender is arranged in reducing agent mixing bunker, coke granule and reducing agent powder shape is sufficiently stirred
At enhanced reducing agent.
Preferably, the PNCR boiler smoke abatement equipment further includes the first distributor, the second distributor, eddy flow diffusion
Distributor, branch's shut-off valve and cold smoke valve, the input terminal of the first distributor are connected to the output end of reducing agent Pneumatic conveying pipeline
On, the output end of the first distributor is connected on the input terminal of the second distributor, and the output end of the second distributor is connected to eddy flow
On diffusion profile device, eddy flow diffusion profile device is arranged on the inner wall of boiler furnace, and the setting of branch's shut-off valve is in the second distribution
On the pipeline that device is connected with eddy flow diffusion profile device；Enhanced reducing agent is cut by the first distributor, the second distributor, branch
Only valve and eddy flow diffusion profile device are sent in boiler combustion room, are arranged on the pipeline between boiler induced-draft fan and desulphurization plant
One cold smoke pipeline, cold smoke pipeline are extend into boiler combustion room, and pipeline opening is arranged in around eddy flow diffusion profile device, cold smoke valve
It is arranged in the pipeline opening of cold smoke pipeline.
Preferably, the eddy flow diffusion profile device further includes eddy flow shell and swirl vane；Swirl vane setting is being revolved
It flows in shell, the nozzle of eddy flow shell is set as horn shape.
Preferably, the PNCR boiler smoke abatement equipment further includes that air pipe line, air filter and threeway are adjusted
Valve；The air filter is arranged in the suction side of air pipe line, where air pipe line, neat stress pipeline and conveying fan
Pipeline is connected to three port parts of three-way control valve.
Preferably, the PNCR boiler smoke abatement equipment further include: the first distributor and lowest level twice aeration mouth；
Enhanced reducing agent is imported into lowest level twice aeration mouth by the first distributor.
The beneficial effects of the utility model are: the coke granule in boiler fly ash is trapped by the way that remaining carbon capture device is arranged
It arrives, is conveyed in back boiler by reducing agent Pneumatic conveying pipeline, make unburned fuel full combustion in boiler combustion room, improve
Boiler combustion service efficiency plays the role of fuel-saving；Coke granule has the function of reducing agent, directly adds in reducing agent
Carbon can form enhanced reducing agent, while can increase the reaction temperature in boiler, reach the optimum activity temperature of reducing agent,
Reducing agent can be made to be fully used, improve denitration efficiency in this way, the utility model is arranged remaining carbon capture device and catches
It catches coke granule to be applied directly to form enhanced reducing agent in reducing agent, reduces the step for individually increasing carbon before using reducing agent
Suddenly, and the effect for saving reducing agent is also functioned to, coke granule and reducing agent are heated in boiler combustion Indoor Combustion, improve pot
Temperature in furnace, active temperature needed for reaching reducing agent；The setting of eddy flow diffusion profile device is conducive to point for improving reducing agent
Cloth uniformity makes reducing agent sufficiently in conjunction with nitrogen oxides, reduces reducing agent excess coefficient, saves the usage amount of reducing agent,
Nitrogen oxides can also be made sufficiently to be reduced, make the discharge amount of nitrogen oxides that can absolutely reach discharge standard.
Detailed description of the invention
Fig. 1 is the overall structure diagram of PNCR boiler smoke abatement equipment；
Fig. 2 is boiler furnace 1, boiler dust remover 7, boiler induced-draft fan 8, the first distributor 28, the in the utility model
The schematic top plan view that two distributors 29, eddy flow diffusion profile device 30, branch's shut-off valve 31 and cold smoke valve 32 are used in combination；
Fig. 3 is the structural schematic diagram of eddy flow diffusion profile device 30；
Fig. 4 is the schematic diagram that the utility model is applied to the small-sized pulverized-coal fired boiler of horizontally disposed turbulent burner 38；
Fig. 5 is the schematic diagram that the utility model is applied to the small-sized pulverized-coal fired boiler of vertically disposed turbulent burner 38；
Fig. 6 is the schematic diagram that the utility model is applied to circulating fluidized bed boiler.
Specific embodiment
Below with reference to the accompanying drawings and specific embodiments further illustrating the technical solution of the utility model includes:
Specific embodiment 1: illustrate present embodiment in conjunction with Fig. 1,4,5, PNCR boiler smoke described in present embodiment
Abatement equipment include boiler furnace 1, boiler induced-draft fan 8, neat stress pipeline 10, conveying fan 20, reducing agent load pipeline 14,
Reducing agent injector 23 and reducing agent Pneumatic conveying pipeline 27；It is characterized by: the PNCR boiler smoke abatement equipment is also
Including remaining carbon capture device 3, remaining carbon self-unloading pipe 26 and reducing agent mixing bunker 21；
The input terminal of remaining carbon capture device 3 is connected at the smoke outlet of boiler, and the coke granule output end of remaining carbon capture device 3 connects
It connects on the input terminal of remaining carbon self-unloading pipe 26, the flue gas output end of remaining carbon capture device 3 is connected to the input terminal of boiler induced-draft fan 8
On, the output end of boiler induced-draft fan 8 is connected with the input terminal of neat stress pipeline 10, the output end of neat stress pipeline 10 and conveying
The input terminal of blower 20 is connected；The input terminal of reducing agent mixing bunker 21 is connected to the output end of remaining carbon self-unloading pipe 26 and goes back
Former agent loads on the output end of pipeline 14, the output end of reducing agent mixing bunker 21 and the reducing agent input terminal of reducing agent injector 23
It is connected, the neat stress input terminal of reducing agent injector 23 is connected with the output end of conveying fan 20, reducing agent injector 23
Reducing agent output end be connected with the input terminal of reducing agent Pneumatic conveying pipeline 27, the output of reducing agent Pneumatic conveying pipeline 27
End is connected with boiler furnace.
The coke granule in boiler fly ash is trapped by the way that remaining carbon capture device 3 is arranged, passes through reducing agent pneumatic carrier
Road 27 conveys in back boiler, makes unburned fuel full combustion in boiler combustion room, improves boiler combustion service efficiency, rises
To fuel-saving effect；Coke granule has the function of reducing agent, directly carbon is added to form enhanced reducing agent in reducing agent,
The reaction temperature in boiler combustion room can be increased, reach the optimum activity temperature of reducing agent, improve denitration in this way
Efficiency, the utility model are arranged remaining 3 capture coke granule of carbon capture device and are applied directly to form enhanced reducing agent in reducing agent, subtract
The step of increasing carbon before using reducing agent is lacked, and has also functioned to the effect for saving reducing agent, coke granule and reducing agent exist
Boiler combustion Indoor Combustion heats, and improves the temperature in boiler, active temperature needed for reaching reducing agent；
Boiler induced-draft fan 8, reducing agent injector 23, reducing agent conveying fan 20, reducing agent injector 23 and remaining carbon capture
Device 3 is driven by a motor respectively.
Specific embodiment 2: illustrate present embodiment in conjunction with Fig. 1,4,5, PNCR boiler smoke described in present embodiment
Abatement equipment further includes remaining carbon storage silo 39, remaining carbon bucket level-sensing device 4, remaining carbon discharge valve 5 and remaining carbon metering discharge valve 6；Remaining carbon is deposited
The coke granule exit of remaining carbon capture device 3 is arranged in warehouse 39；Remaining carbon discharge valve 5 and remaining carbon metering discharge valve 6 are set gradually
On the output end of remaining carbon storage silo 39；Coke granule measures discharge valve 6 by remaining carbon discharge valve 5 and remaining carbon and is quantitatively transported to also
In former agent mixing bunker 21；Remaining carbon bucket level-sensing device 4 is arranged in remaining carbon storage silo 39.
Remaining carbon discharge valve 5, remaining carbon metering discharge valve 6 and remaining carbon bucket level-sensing device 4 are driven by a motor respectively.
Other compositions and connection type are same as the specific embodiment one.
Specific embodiment 3: illustrate present embodiment in conjunction with Fig. 1,4,5, PNCR boiler smoke described in present embodiment
Abatement equipment further includes reducing agent storage warehouse 13, reducing agent discharge valve 15 and reductant metering screw conveyor 16；Reducing agent storage
Storage 13 loads pipeline 14 with reducing agent respectively and reductant metering screw conveyor 16 is connected, and reducing agent discharge valve 15 is set
It sets on the pipeline between the output end of reducing agent storage warehouse 13 and the input terminal of reductant metering screw conveyor 16, reducing agent
The output end of metering screw conveyer 16 is connected with the input terminal of reducing agent mixing bunker 21；Going back in reducing agent storage warehouse 13
Former agent is quantitatively transported in reducing agent mixing bunker 21 by reducing agent discharge valve 15 and reductant metering screw conveyor 16.
It can be quantified by setting reducing agent storage warehouse 13 and reductant metering screw conveyor 16 to reducing agent mixing bunker
Middle increase reducing agent, by the setting of specific embodiment two, the ratio of adjusting coke granule and reducing agent that can be proportional.
Other compositions and connection type are identical with embodiment two.
Specific embodiment 4: illustrate present embodiment in conjunction with Fig. 1,4,5, PNCR boiler smoke described in present embodiment
Abatement equipment further includes desulphurization plant 9；9 input terminal of desulphurization plant is connected on 8 output end of boiler induced-draft fan, and desulphurization plant 9 is defeated
Outlet connects the input terminal of neat stress pipeline 10, and the flue gas of desulfurization is by neat stress pipeline 10 and conveying fan 20 as enhanced
The carrier of reducing agent is transported in boiler furnace 1 by reducing agent Pneumatic conveying pipeline 27 together with enhanced reducing agent.
The sulfide in flue gas can be removed by the way that desulphurization plant 9 is arranged, have the function that purifying smoke.
Other compositions and connection type are identical as specific embodiment one, two or three.
Specific embodiment 5: illustrate present embodiment in conjunction with Fig. 1,4,5, PNCR boiler smoke described in present embodiment
Abatement equipment further includes boiler dust remover 7, reducing agent storehouse deduster 11 and dedusting exhaust valve 12；The input terminal of boiler dust remover 7
It is connected on remaining 3 flue gas output end of carbon capture device, on the input terminal of the output end connection boiler induced-draft fan 8 of boiler dust remover 7, also
Former agent storehouse deduster 11 is connected to the upper end of reducing agent storage warehouse 13, the setting of dedusting exhaust valve 12 reducing agent storehouse deduster 11 with
On the channel that neat stress pipeline 10 is connected；Dust in reducing agent passes through dedusting by 11 dedusting of reducing agent storehouse deduster
Exhaust valve 12 is discharged in neat stress pipeline 10, and the opening and closing of reducing agent storehouse deduster 11 is controlled by dedusting exhaust valve 12；In boiler
The flue gas of discharge is entered in boiler dust remover 7 by remaining carbon capture device 3 and is dusted.
The dust in pot inner flue gas of the stove is removed by setting boiler dust remover 7, prevents the dust blocking in the flue gas of convolution
Pipeline is suspended to formation dirt in boiler, and reducing agent conveys gas using neat stress after dedusting, is conducive to improve low nitrogen burning
Emission reduction efficiency and boiler combustion efficiency.
The dust generated when loading reducing agent to reducing agent storage warehouse 13 is carried out by setting reducing agent storehouse deduster 11
Dedusting, reducing agent storehouse deduster 11 incude deduster using Self-operated pressure, and multiple groups are arranged in reducing agent storehouse deduster 11, lead to
The group number of pressure maintenance device control starting in self-operated type storehouse is crossed, structure is simple, material is single, equipment cost is low, operating cost
Low, the whole opening and closing of reducing agent storehouse deduster 11 is controlled by dedusting exhaust valve 12, will be flown up by dedusting exhaust valve 12
Reducing agent is discharged in neat stress pipeline 10, and setting in this way is played the role of saving reducing agent, reducing agent powder zero leakage.
Other compositions and connection type are identical as specific embodiment four.
Specific embodiment 6: illustrate present embodiment in conjunction with Fig. 1,4,5, PNCR boiler smoke described in present embodiment
Abatement equipment further includes mixing bunker metering discharge valve 22, mixing bunker discharge valve 24 and mixing bunker blender 25, mixing bunker discharge valve
24 are successively set on the output end of reducing agent mixing bunker 21 with mixing bunker metering discharge valve 22, and enhanced reducing agent passes through mixing
Storehouse discharge valve 24 and mixing bunker measure the enhanced reducing agent of weight feed into reducing agent injector 23 of discharge valve 22；Mixing bunker stirs
It mixes device 25 to be arranged in reducing agent mixing bunker 21, forms enhanced reduction coke granule and reducing agent powder is sufficiently stirred
Agent.
Measure that discharge valve 22 is quantitative to supply reducing agent into reducing agent injector 23 by setting mixing bunker, it is enhanced also
Former agent supply amount is according to boiler load and NOXThe data such as concentration are determined by computation model, are adjusted by PLC control system 36 mixed
The revolving speed for closing storehouse metering discharge valve 22 is realized.
STRENGTH ON COKE particle and reducing agent powder are sufficiently stirred mixing bunker blender 25 driven by the motor, pass through this
The setting of sample can be enhanced penetration power of the reducing agent in furnace, improve reducing agent distributing homogeneity, expand reducing agent active temperature
Section, raising boiler efficiency etc..
Remaining carbon discharge valve 5, reducing agent discharge valve 15 and mixing bunker discharge valve 24 make in long-term starting, stopping and maintenance
With.
Other compositions and connection type are identical as specific embodiment four or five.
Specific embodiment 7: illustrate present embodiment in conjunction with Fig. 1 to Fig. 3, PNCR boiler smoke described in present embodiment
Gas abatement equipment further include: the first distributor 28, the second distributor 29, eddy flow diffusion profile device 30, branch's shut-off valve 31 and cold
The input terminal of cigarette valve 32, the first distributor 28 is connected on the output end of reducing agent Pneumatic conveying pipeline 27, the first distributor 28
Output end be connected on the input terminal of the second distributor 29, the output end of the second distributor 29 is connected to eddy flow diffusion profile device
On 30, eddy flow diffusion profile device 30 is arranged on the inner wall of boiler furnace 1, and branch's shut-off valve 31 is arranged in the second distributor 29
On the pipeline being connected with eddy flow diffusion profile device 30；Enhanced reducing agent passes through the first distributor 28, the second distributor 29, divides
Branch shut-off valve 31 and eddy flow diffusion profile device 30 are sent in the burner hearth of boiler furnace 1, in boiler induced-draft fan 8 and desulphurization plant
One cold smoke pipeline is set on the pipeline between 9, and cold smoke pipeline is extend into boiler combustion room, and pipeline opening setting is in eddy flow diffusion point
Around cloth device 30, cold smoke valve 32 is arranged in the pipeline opening of cold smoke pipeline.
Eddy flow diffusion profile device 30 is set on the inner wall of boiler furnace 1, and enhanced reducing agent passes through reducing agent strength
Transfer pipeline 27 is flowed through to the first distributor 28, and the first distributor 28 is connected respectively to two second point by two strip transmission line roads
On orchestration 29, enhanced reducing agent divides using the second distributor 29 for several strip transmission line roads, defeated using a plurality of conveying circuit
Enhanced reducing agent is sent, an eddy flow diffusion profile device 30 is set on the end on every strip transmission line road, finally by more Zhi Xuanliu
Enhanced reducing agent is sent into burner hearth by diffusion profile device 30 occurs denitration reaction with flue gas, by NOXIt is reduced into N2Discharge.
More eddy flow diffusion profile devices 30 are distributed at left and right sides of boiler, on every 30 front-end pipelines of eddy flow diffusion profile device
Branch's shut-off valve 31 is all set, branch's shut-off valve 31 can be it is electronic, hydraulic, pneumatic either manually；Branch cuts
Only valve 31 controls the operation of eddy flow diffusion profile device 30, and eddy flow diffusion profile device 30, which can be run simultaneously, send enhanced reducing agent
Enter in the combustion chamber of boiler, can also be different step operation；According to boiler load, NOXThe computation models such as concentration and temperature transmitter 2
Data by PLC control system 36 or manually control the usage quantity and combination of eddy flow diffusion profile device 30；Every
The all mating cold smoke valve 32 of eddy flow diffusion profile device 30 is opened when eddy flow diffusion profile device 30 stops launching enhanced reducing agent
Corresponding cold smoke valve 32 prevents 30 scaling loss of eddy flow diffusion profile device or deformation with cold smoke air cooling eddy flow diffusion profile device 30.
Eddy flow diffusion profile device 30 is arranged at left and right sides of boiler, is conducive to penetrate flue gas, and more eddy flows diffusions point are arranged
Cloth device 30, load adaptability improve；The distribution mode of eddy flow diffusion profile device 30 is adjusted according to the position of turbulent burner 38
It is whole.
On arcola of the furnace depth size less than 3m, eddy flow diffusion profile device 30 can also only in boiler front wall or
It is arranged on wall afterwards.
Other compositions and connection type are identical as specific embodiment six.
Specific embodiment 8: embodiment is described with reference to Fig. 3, eddy flow diffusion profile device 30 described in present embodiment
It further include eddy flow shell 33 and swirl vane 34；Swirl vane 34 is arranged in eddy flow shell 33, the nozzle of eddy flow shell 33
It is set as horn shape.
The diffusion angle α range of tubaeform diffusing opening is 20 °~120 °.
Other compositions and connection type are identical as specific embodiment seven.
Specific embodiment 9: embodiment is described with reference to Fig. 1, PNCR boiler smoke described in present embodiment is administered
Equipment further includes air pipe line 17, air filter 18 and three-way control valve 19；The air filter 18 is arranged in air
In the suction side of pipeline 17, air pipe line 17, neat stress pipeline 10 and 20 place pipeline of conveying fan are connected to threeway tune
Save three port parts of valve 19.
Reducing agent conveys gas in addition to the neat stress after boiler dust remover 7 is also by air pipe line 17 and air mistake
The ratio of the cold air that filter 18 conveys, neat stress and cold air passes through the threeway on 20 inlet duct of reducing agent conveying fan
Regulating valve 19 controls, and conveying gas carries enhanced reducing agent after the pressurization of conveying fan 20 in reducing agent injector 23
It is transported in boiler by reducing agent Pneumatic conveying pipeline 27.
Flue gas can generate low temperature condition in the case where boiler is compound or in the case that coal quality is inferior, flue gas can condensed water
Pearl, if only convey to reducing agent with flue gas will lead to powdered reducing agent agglomeration and pipeline is caused to be blocked, if only
Air is selected to will increase the content of oxygen in boiler, amount of nitrogen oxides increases, can solve by air to the proportional mixing of flue gas
It has determined this problem.
Other compositions and connection type are identical as specific embodiment eight.
Specific embodiment 10: PNCR boiler smoke described in embodiment is described with reference to Fig.6, present embodiment is administered
Equipment further includes the first distributor 28 and lowest level twice aeration mouth 37；Enhanced reducing agent is imported by the first distributor 28
In lowest level twice aeration mouth 37.
Lowest level twice aeration mouth 37 is several, and the first distributor 28 divides for corresponding several strip transmission line roads, increasing
Strong type reducing agent is imported into lowest level twice aeration mouth 37 by the first distributor 28, and enhanced reducing agent is with entering most
It is out of stock with reaction of nitrogen oxides in the air delivery to boiler of lower layer's twice aeration mouth 37.
Other compositions and connection type are identical as specific embodiment six.
Working principle: in conjunction with shown in Fig. 1 to Fig. 6: flying dust in the utility model boiler combustion room by remaining carbon capture device,
Boiler dust remover 7, boiler induced-draft fan 8, desulphurization plant 9, neat stress pipeline 10, three-way control valve 19, conveying fan 20, reducing agent
Injector 23 and reducing agent Pneumatic conveying pipeline 27, the first distributor 28 are finally transported in boiler combustion room, in transmission process
In remaining carbon capture device by flying dust coke granule trap, remaining flying dust is dusted by boiler dust remover, by desulfurization
Equipment 9 carries out desulfurization and ultimately forms neat stress, and the air that neat stress and the conveying of air pipe line 17 are come in is mixed to form enhanced go back
The carrier of former agent；The coke granule that remaining carbon capture device traps is unloaded by remaining carbon storage silo 39, remaining carbon discharge valve 5, the metering of remaining carbon
Material valve 6 and remaining carbon self-unloading pipe 26 are quantitatively transported in reducing agent mixing bunker 21；Reducing agent loads pipeline 14, reduction by reducing agent
Agent storage warehouse 13, reducing agent discharge valve 15 and reductant metering screw conveyor 16 are quantitatively transported in reducing agent mixing bunker 21,
Coke granule in reducing agent mixing bunker 21 is stirred with reducing agent powder by mixing bunker blender 25, mixed enhancing
Type reducing agent measures discharge valve 22 eventually by mixing bunker and mixing bunker discharge valve 24 is dosed on reducing agent injector 23,
Enhanced reducing agent is transported in boiler combustion room with mixed type neat stress along reducing agent Pneumatic conveying pipeline 27, conveying
Enhanced reducing agent can be delivered directly in boiler combustion room by the first distributor 28 and lowest level twice aeration mouth 37；?
It can be transported in boiler combustion room by the first distributor 28, the second distributor 29 and eddy flow diffusion profile device 30, second
Branch's shut-off valve 31 is set on the conveyance conduit between distributor 29 and eddy flow diffusion profile device 30, can control eddy flow diffusion point
The out of stock processing of the quantity of cloth device, combination and specific position.Cold smoke valve carries out at cooling eddy flow diffusion profile device 30
Reason.Wherein the distribution mode of eddy flow diffusion profile device 30 is adjusted according to the position of combustion apparatus 38.
Claims (10)
1. a kind of PNCR boiler smoke abatement equipment, comprising: boiler furnace (1), boiler induced-draft fan (8), neat stress pipeline
(10), conveying fan (20), reducing agent load pipeline (14), reducing agent injector (23) and reducing agent Pneumatic conveying pipeline
(27)；It is characterized by: the PNCR boiler smoke abatement equipment further includes remaining carbon capture device (3), remaining carbon self-unloading pipe (26)
With reducing agent mixing bunker (21)；
The input terminal of remaining carbon capture device (3) is connected at the smoke outlet of boiler, and the coke granule output end of remaining carbon capture device (3) connects
It connects on the input terminal of remaining carbon self-unloading pipe (26), the flue gas output end of remaining carbon capture device (3) is connected to the defeated of boiler induced-draft fan (8)
Enter on end, the output end of boiler induced-draft fan (8) is connected with the input terminal of neat stress pipeline (10), neat stress pipeline (10) it is defeated
Outlet is connected with the input terminal of conveying fan (20)；The input terminal of reducing agent mixing bunker (21) is connected to remaining carbon self-unloading pipe
(26) output end and reducing agent loads on the output end of pipeline (14), and the output end and reducing agent of reducing agent mixing bunker (21) spray
The reducing agent input terminal of emitter (23) is connected, and the neat stress input terminal of reducing agent injector (23) is defeated with conveying fan (20)
Outlet is connected, and the reducing agent output end of reducing agent injector (23) is connected with the input terminal of reducing agent Pneumatic conveying pipeline (27)
It connects, the output end of reducing agent Pneumatic conveying pipeline (27) is connected with boiler furnace.
2. PNCR boiler smoke abatement equipment according to claim 1, it is characterised in that: it further includes remaining carbon storage silo
(39), remaining carbon bucket level-sensing device (4), remaining carbon discharge valve (5) and remaining carbon metering discharge valve (6)；Remaining carbon storage silo (39) is arranged remaining
The coke granule exit of carbon capture device (3)；Remaining carbon discharge valve (5) and remaining carbon metering discharge valve (6) are successively set on remaining carbon and deposit
On the output end of warehouse (39)；Coke granule is quantitatively transported to reduction by remaining carbon discharge valve (5) and remaining carbon metering discharge valve (6)
In agent mixing bunker (21)；Remaining carbon bucket level-sensing device (4) is arranged in remaining carbon storage silo (39).
3. PNCR boiler smoke abatement equipment according to claim 2, it is characterised in that: it further includes reducing agent storage warehouse
(13), reducing agent discharge valve (15) and reductant metering screw conveyor (16)；Reducing agent storage warehouse (13) respectively with reducing agent
It loads pipeline (14) to be connected with reductant metering screw conveyor (16), reducing agent discharge valve (15) setting is stored in reducing agent
On pipeline between the output end in storehouse (13) and the input terminal of reductant metering screw conveyor (16), reductant metering spiral transferring
The output end of machine (16) and the input terminal of reducing agent mixing bunker (21) is sent to be connected；Reducing agent in reducing agent storage warehouse (13) is logical
It crosses reducing agent discharge valve (15) and reductant metering screw conveyor (16) is quantitatively transported in reducing agent mixing bunker (21).
4. PNCR boiler smoke abatement equipment according to claim 1,2 or 3, it is characterised in that: it further includes that desulfurization is set
Standby (9)；Desulphurization plant (9) input terminal is connected on boiler induced-draft fan (8) output end, and desulphurization plant (9) output end connects net cigarette
The flue gas of the input terminal of air pipe (10), desulfurization is used as enhanced reducing agent by neat stress pipeline (10) and conveying fan (20)
Carrier by reducing agent Pneumatic conveying pipeline (27) boiler furnace (1) to be transported to enhanced reducing agent together with interior.
5. PNCR boiler smoke abatement equipment according to claim 4, it is characterised in that: it further includes boiler dust remover
(7), reducing agent storehouse deduster (11) and dedusting exhaust valve (12)；The input terminal of boiler dust remover (7) is connected to remaining carbon capture device
(3) on flue gas output end, on the input terminal of output end connection boiler induced-draft fan (8) of boiler dust remover (7), the dedusting of reducing agent storehouse
Device (11) is connected to the upper end of reducing agent storage warehouse (13), and dedusting exhaust valve (12) setting is in reducing agent storehouse deduster (11) and only
On the channel that flue gas pipeline (10) is connected；Dust in reducing agent is passed through and is removed by reducing agent storehouse deduster (11) dedusting
Dirt exhaust valve (12) is discharged in neat stress pipeline (10), and the opening and closing of reducing agent storehouse deduster (11) is controlled by dedusting exhaust valve (12)
System；The flue gas being discharged in boiler is entered in boiler dust remover (7) by remaining carbon capture device (3) and is dusted.
6. PNCR boiler smoke abatement equipment according to claim 5, it is characterised in that: it further includes that mixing bunker metering is unloaded
Expect that valve (22), mixing bunker discharge valve (24) and mixing bunker blender (25), mixing bunker discharge valve (24) and mixing bunker measure discharging
Valve (22) is successively set on the output end of reducing agent mixing bunker (21), enhanced reducing agent by mixing bunker discharge valve (24) with
Mixing bunker measures discharge valve (22) enhanced reducing agent of weight feed in reducing agent injector (23)；Mixing bunker blender (25)
Setting forms enhanced reducing agent in reducing agent mixing bunker (21), coke granule and reducing agent powder is sufficiently stirred.
7. PNCR boiler smoke abatement equipment according to claim 6, it is characterised in that: it further include: the first distributor
(28), the second distributor (29), eddy flow diffusion profile device (30), branch's shut-off valve (31) and cold smoke valve (32), the first distributor
(28) input terminal is connected on the output end of reducing agent Pneumatic conveying pipeline (27), the output end connection of the first distributor (28)
On the input terminal of the second distributor (29), the output end of the second distributor (29) is connected on eddy flow diffusion profile device (30),
Eddy flow diffusion profile device (30) is arranged on the inner wall of boiler furnace (1), and branch's shut-off valve (31) is arranged in the second distributor
(29) on the pipeline being connected with eddy flow diffusion profile device (30)；Enhanced reducing agent passes through the first distributor (28), second point
Orchestration (29), branch's shut-off valve (31) and eddy flow diffusion profile device (30) are sent in boiler furnace (1), in boiler induced-draft fan
(8) a cold smoke pipeline is set on the pipeline between desulphurization plant (9), cold smoke pipeline is extend into boiler combustion room, pipeline opening
It is arranged around eddy flow diffusion profile device (30), cold smoke valve (32) is arranged in the pipeline opening of cold smoke pipeline.
8. PNCR boiler smoke abatement equipment according to claim 7, it is characterised in that: eddy flow diffusion profile device (30) is also
Including eddy flow shell (33) and swirl vane (34)；Swirl vane (34) setting is in eddy flow shell (33), eddy flow shell (33)
Nozzle be set as horn shape.
9. PNCR boiler smoke abatement equipment according to claim 8, it is characterised in that: it further includes air pipe line
(17), air filter (18) and three-way control valve (19)；The air filter (18) is arranged in air pipe line (17)
In suction side, air pipe line (17), neat stress pipeline (10) and pipeline where conveying fan (20) are connected to threeway adjusting
Three port parts of valve (19).
10. PNCR boiler smoke abatement equipment according to claim 6, it is characterised in that: it further includes the first distributor
(28) and lowest level twice aeration mouth (37)；Enhanced reducing agent is imported into lowest level twice aeration by the first distributor (28)
In mouth (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821178384.6U CN208703909U (en) | 2018-07-24 | 2018-07-24 | A kind of PNCR boiler smoke abatement equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821178384.6U CN208703909U (en) | 2018-07-24 | 2018-07-24 | A kind of PNCR boiler smoke abatement equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208703909U true CN208703909U (en) | 2019-04-05 |
Family
ID=65939190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821178384.6U Withdrawn - After Issue CN208703909U (en) | 2018-07-24 | 2018-07-24 | A kind of PNCR boiler smoke abatement equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208703909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679596A (en) * | 2018-07-24 | 2018-10-19 | 宁波国电龙高科环境工程技术有限公司 | A kind of PNCR boiler smokes abatement equipment |
-
2018
- 2018-07-24 CN CN201821178384.6U patent/CN208703909U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679596A (en) * | 2018-07-24 | 2018-10-19 | 宁波国电龙高科环境工程技术有限公司 | A kind of PNCR boiler smokes abatement equipment |
| CN108679596B (en) * | 2018-07-24 | 2024-03-08 | 宁波国电龙高科环境工程技术有限公司 | PNCR boiler flue gas treatment equipment |
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