CN208097812U - A kind of equipment for denitrifying flue gas - Google Patents
A kind of equipment for denitrifying flue gas Download PDFInfo
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- CN208097812U CN208097812U CN201820283231.1U CN201820283231U CN208097812U CN 208097812 U CN208097812 U CN 208097812U CN 201820283231 U CN201820283231 U CN 201820283231U CN 208097812 U CN208097812 U CN 208097812U
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- flue
- gas
- flue gas
- equipment
- ammonia
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 239000003546 flue gas Substances 0.000 title claims abstract description 89
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 118
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000005507 spraying Methods 0.000 claims abstract description 55
- 239000007789 gas Substances 0.000 claims abstract description 54
- 238000012806 monitoring device Methods 0.000 claims abstract description 49
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 23
- 239000001301 oxygen Substances 0.000 claims description 23
- 229910052760 oxygen Inorganic materials 0.000 claims description 23
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 9
- 235000019504 cigarettes Nutrition 0.000 claims description 7
- 230000004044 response Effects 0.000 abstract description 8
- 229910021529 ammonia Inorganic materials 0.000 description 43
- 239000000243 solution Substances 0.000 description 19
- 239000007921 spray Substances 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000002803 fossil fuel Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 208000028659 discharge Diseases 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model relates to denitrating flue gas field more particularly to a kind of equipment for denitrifying flue gas.Equipment for denitrifying flue gas includes the preceding vertical well gas flue set gradually along flow of flue gas direction and rear pass, it is disposed with ammonia-gas spraying device and SCR reactor along flow of flue gas direction in the rear pass, the inlet of the preceding vertical well gas flue is provided with the first nitrous oxides concentration monitoring device for monitoring the nitrogen oxides in effluent concentration flowed out from burner hearth.Pass through the entry position of vertical well gas flue before being arranged in the first nitrous oxides concentration monitoring device in the utility model, so that the first nitrous oxides concentration monitoring device is after monitoring nitrous oxides concentration variation, nitrogen oxides needs first to flow in preceding vertical well gas flue, then it gets at ammonia-gas spraying device, the response time is provided for ammonia-gas spraying device can be adjusted in real time, avoids the exceeded phenomenon of discharged nitrous oxides.
Description
Technical field
The utility model relates to denitrating flue gas field more particularly to a kind of equipment for denitrifying flue gas.
Background technique
Fossil fuel has greatly facilitated the development of human society as the important energy, but the utilization of fossil fuel
Cause a series of environmental problem.Since fossil fuel can generate nitrogen oxides in combustion, and nitrogen oxides conduct
The main reason of acid rain and photochemical fog causes many influences to human society, therefore to harmful after combustion of fossil fuel
Gas is treated as society or even State-level focus of attention, and primary discharge source of the thermal power plant as nitrogen oxides,
Receive the strict supervision that more becomes.Wherein on September 12nd, 2014, what National Development and Reform Committee, Chinese Ministry of Environmental Protection and Bureau of Energy issued jointly《Coal
Electric energy-saving and emission-reduction upgrading and transformation action plan (2014-2020)》It is explicitly pointed out in (hair changes the energy [2014] 2093) new
Build unit and need to basically reach gas turbine group emission limit, i.e., in the case where benchmark oxygen content 6%, flue dust, sulfur dioxide and
Nitrogen oxides should control respectively in 10mg/m3、35mg/m3And 50mg/m3In the range of.
Thermal power plant is mainly in such a way that low nitrogen oxide burning technology and gas denitrifying technology combine in the prior art
Control the discharge of nitrogen oxides.Wherein gas denitrifying technology mainly uses selective catalytic reduction（SCR）, reduction in SCR
Agent mainly uses ammonia, and ammonia mainly passes through urea pyrolysis legal system ammonia, hydrolysis of urea legal system ammonia and liquefied ammonia and evaporates ammonia three processed
Kind method is prepared.Above-mentioned three kinds of ammonia methods processed are the simplest with liquefied ammonia evaporation Ammonia Process, and the reaction time is also the rapidest,
The supply of liquefied ammonia is transported by liquefied ammonia tank vehicle, and the pressure energy generated using liquefied ammonia tank vehicle and discharging compressor operation is by liquefied ammonia by tank car
It inputs in liquefied ammonia groove tank, then the liquefied ammonia in liquefied ammonia groove tank is transported in liquefied ammonia storage tank by discharging compressor and is evaporated to ammonia
Gas is sent to ammonia-gas spraying device after the diluent air finally blasted with dilution air mixes in ammonia/air mixer.
As shown in Figure 1, gas denitrifying technology in the prior art in flue by arranging that ammonia-spraying grid 1 and SCR react
Device 2 sprays into ammonia into flue using ammonia-spraying grid 1, and the nitrogen oxides in the ammonia and flue of penetrating is in SCR reactor 2
The catalytic reduction reaction that selectivity occurs, generates free of contamination nitrogen and water, SCR reactor 2 is mounted on economizer 3 and air is pre-
Between hot device 4, the entrance of SCR reactor 2 is disposed with the SCR for monitoring nitrous oxides concentration, flue gas oxygen content, flue-gas temperature
Entrance measuring point 5, the outlet of SCR reactor 2 are disposed with oxygen-containing for monitoring the nitrous oxides concentration after catalytic reduction reaction, flue gas
The outlet the SCR measuring point 6 of amount, flue-gas temperature, this outer portion SCR system are also respectively equipped in the inlet and outlet of SCR reactor 2
Import flue gas flow measuring point 7 and exiting flue gas flow measuring point 8.Before above-mentioned SCR inlet measuring point 5 is typically mounted at ammonia-spraying grid
End, after SCR inlet measuring point 5 monitors that nitrogen oxides in effluent concentration changes, due to the complexity of ammonia preparation process,
Ammonia-gas spraying device needs certain instruction response time, and the ammonia spraying amount of ammonia-spraying grid cannot be adjusted immediately, in this period
Flue gas ammonia nitrogen ratio will be in de-synchronization state, and then cause the nitrogen oxides in flue that cannot cause nitrogen by sufficiently catalytic reduction
Oxide emissions it is exceeded.
Utility model content
The purpose of this utility model is to provide a kind of equipment for denitrifying flue gas, for solving SCR reactor in the prior art
The nitrogen oxides point layout of entrance is in the front end of ammonia-spraying grid, when the nitrous oxides concentration in flue changes, due to
Ammonia-gas spraying device has certain response time, and of short duration imbalance is caused nitrogen oxide emission super by the flue gas ammonia nitrogen ratio in flue
Target technical problem.
To achieve the above object, the equipment for denitrifying flue gas of the utility model adopts the following technical scheme that：
Technical solution 1：Equipment for denitrifying flue gas include the preceding vertical well gas flue set gradually along flow of flue gas direction and after
Flue, the rear pass is interior to be disposed with ammonia-gas spraying device and SCR reactor, the preceding vertical shaft cigarette along flow of flue gas direction
The inlet in road is provided with the first nitrous oxides concentration monitoring for monitoring the nitrogen oxides in effluent concentration flowed out from burner hearth
Device.
Beneficial effect：In the prior art for after monitoring furnace outlet, the first nitrogen oxides before ammonia-gas spraying device it is dense
Degree monitoring device is arranged in the front position of ammonia-gas spraying device, the first nitrous oxides concentration monitoring device at a distance from ammonia-gas spraying device compared with
Closely, since ammonia-gas spraying device has certain response time after being connected to instruction, it will appear of short duration ammonia nitrogen molar ratio in flue and lose
The phenomenon that tune.Pass through the entrance position of vertical well gas flue before being arranged in the first nitrous oxides concentration monitoring device in the utility model
It sets, so that the first nitrous oxides concentration monitoring device is after monitoring nitrous oxides concentration variation, nitrogen oxides needs first preceding
Flowing, then gets at ammonia-gas spraying device, provides the response time for that can adjust in real time ammonia-gas spraying device, keep away in vertical well gas flue
The exceeded phenomenon of discharged nitrous oxides is exempted from.
Technical solution 2：On the basis of technical solution 1, the rear pass includes arranged parallel with preceding vertical well gas flue
Vertical well gas flue after vertical well gas flue and second after one, preceding vertical well gas flue are connected to vertical well gas flue bottom correspondence after first, erect after first
It is interconnected at the top of vertical well gas flue after well flue and second, the ammonia-gas spraying device setting is after first in vertical well gas flue, SCR reaction
Device setting is after second in vertical well gas flue.After first after vertical well gas flue and second arrangement of vertical well gas flue facilitate ammonia-gas spraying device and
The installation of SCR reactor.
Technical solution 3：On the basis of technical solution 2, vertical well gas flue passes through top after vertical well gas flue and second after first
Lateral flue connection.The setting of top transverse direction flue is so that ammonia and nitrogen oxides can be abundant before entering SCR reactor
Mixing avoids ammonia and nitrogen oxides since reaction caused by mixing unevenly is insufficient, further avoids nitrogen oxides
Discharge beyond standards.
Technical solution 4：On the basis of technical solution 2, the equipment for denitrifying flue gas further includes for monitoring furnace outlet
Later, before ammonia-gas spraying device in flue oxygen concentration the first oxygen concentration monitoring device, first oxygen concentration monitoring dress
It sets before being arranged at the entry position of flue vertical shaft.Oxygen monitoring can monitor the content of oxygen in flue, when needing to adjust cigarette
The air capacity sprayed into can be adjusted by ammonia-gas spraying device when oxygen content in road, the first oxygen concentration monitoring device also is disposed on
Flue hoistway entrance position makes monitoring device simplify arrangement on the whole, is conducive to installing concentratedly for monitoring device.
Technical solution 5：On the basis of technical solution 2, the equipment for denitrifying flue gas further includes for monitoring furnace outlet
Later, before ammonia-gas spraying device in flue temperature the first temperature monitoring device, first temperature monitoring device is arranged in preceding cigarette
At the entry position of road vertical shaft.The arrangement for simplifying whole monitoring device is conducive to installing concentratedly for monitoring device.
Technical solution 6：On the basis of any one of technical solution 1-5, the equipment for denitrifying flue gas further includes for supervising
Survey the second nitrous oxides concentration monitoring device of the nitrous oxides concentration in catalytic reduction reaction rear pass in SCR reactor, institute
State the rear side that the second nitrous oxides concentration monitoring device is arranged in SCR reactor.To the nitrogen oxides after catalytic reduction reaction into
Row monitoring, it is ensured that amount of nitrogen oxides is within defined discharge standard.
Technical solution 7：On the basis of technical solution 6, the second oxygen concentration there also is provided on rear side of the SCR reactor
Monitoring device and second temperature monitoring device.To after catalytic reduction reaction oxygen and temperature be monitored and can fully understand
Specific situation in flue, adjusts in time when to be abnormal in flue.
Technical solution 8：On the basis of any one of technical solution 1-5, the equipment for denitrifying flue gas further includes that setting exists
The first flue gas flow monitoring device at SCR reactor inlet.The flue gas of monitoring can be passed through by the monitoring of the first flue gas flow
The product of the nitrous oxides concentration of flow and SCR inlet obtains the flow of nitrogen oxides, in conjunction with SCR design efficiency data meter
Corresponding ammonia spraying amount is calculated, to control the straying quatity of ammonia.
Technical solution 9：On the basis of any one of technical solution 1-5, the equipment for denitrifying flue gas further includes that setting exists
Second flue gas flow monitoring device of SCR reactor exit.Second flue gas flow monitoring device is arranged such that cigarette after reaction
Situation in road can be fully understood, convenient adjustment in time.
Technical solution 10：On the basis of any one of technical solution 1-5, along flow of flue gas side in the preceding vertical well gas flue
Economizer is equipped with to the downstream in the first nitrous oxides concentration monitoring device.Economizer is used to absorb the heat in flue gas,
Energy loss is reduced, energy utilization rate is improved.
Detailed description of the invention
Fig. 1 is each point layout mode figure of equipment for denitrifying flue gas in the prior art；
Fig. 2 is each point layout mode figure of the embodiment 1 of the equipment for denitrifying flue gas of the utility model；
Fig. 3 is the schematic diagram of ammonia-spraying grid in Fig. 2；
In figure：1- ammonia-spraying grid, 2-SCR reactor, 3- economizer, 4- air preheater, 5-SCR entrance measuring point, 6-SCR
Measuring point is exported, 7- import flue gas flow measuring point, 8- exiting flue gas flow measuring point, 9- boiler, 10-, which sprays ammonia, to be responsible for, and 11- sprays ammonia branch
It manages, 12- regulating valve, 13- flow measuring point, vertical well gas flue before 14-, vertical well gas flue after 15- first, lateral flue at the top of 16-, 17-
Vertical well gas flue after second.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
The specific embodiment 1 of the equipment for denitrifying flue gas of the utility model：
As shown in Fig. 2, the equipment for denitrifying flue gas in the utility model includes before being sequentially arranged along flow of flue gas direction
Vertical well gas flue 17 after vertical well gas flue 15, top transverse direction flue 16 and second after vertical well gas flue 14, first, wherein vertical shaft after first
Vertical well gas flue 17 constitutes the rear pass after flue 15, top transverse direction flue 16 and second, wherein vertical well gas flue 15 after first
It is inside disposed with ammonia-gas spraying device, is disposed with SCR reactor 2 after second in vertical well gas flue 17.The equipment for denitrifying flue gas of the utility model
It further include SCR inlet measuring point 5, the outlet SCR measuring point 6, import flue gas flow measuring point 7 and exiting flue gas flow measuring point 8.Wherein
SCR inlet measuring point 5 is disposed with the first nitrous oxides concentration monitoring device, the first oxygen concentration monitoring device and the first temperature prison
Device is surveyed, the outlet SCR measuring point 6 is disposed with the second nitrous oxides concentration monitoring device, the second oxygen concentration monitoring device and the
Two temperature monitoring device, import flue gas flow measuring point 7 are disposed with for measuring the first flue gas flow before entering SCR generator
Monitoring device, exiting flue gas flow measuring point 8 are disposed with for measuring the second flue gas flow monitoring dress after flowing out SCR generator
It sets.
SCR inlet measuring point 5 is arranged at 14 entry position of preceding vertical well gas flue on rear side of furnace outlet, wherein after furnace outlet
Economizer 3 is disposed in the preceding vertical well gas flue 14 of side, SCR inlet measuring point 5 is arranged in the front side of economizer 3.First flue gas flow
Monitoring device is arranged in the front side of SCR generator, and the second flue gas flow monitoring device is arranged in the rear side of SCR generator.SCR goes out
Mouthful measuring point 6 be arranged in the rear side of the second flue gas flow monitoring device, 4 front side of air preheater position at.
In use, fossil fuel generates a large amount of nitrogen oxides after burning in boiler 9, nitrogen oxides is flowed through on boiler 9
When portion region, due to the supplement of burnout degree, nitrogen oxides will continue to generate 9 upper area of boiler.When burning generation in flue
After flue gas flows out furnace outlet, the stabilization nitrogen oxides of oxygen content does not continue to generate in the reduction and flue due to temperature,
Ingredient in flue gas is in relatively steady state, and the of the SCR inlet measuring point 5 before being arranged at 14 entry position of vertical well gas flue
One nitrous oxides concentration monitoring device will accurately detect the concentration of nitrogen oxides in flue, simultaneously because SCR inlet is surveyed
Point 5 there also is provided the first oxygen concentration monitoring device and the first temperature monitoring device, at preceding 14 entry position of vertical well gas flue
The oxygen content and temperature of flue gas also can be accurately measured in flue, and above-mentioned measurement result, which can timely feedback, gives spray ammonia dress
It sets, ammonia-gas spraying device is arranged in 3 rear side of economizer, and ammonia-gas spraying device includes ammonia-spraying grid 1, and ammonia-spraying grid 1 is arranged in 3 rear side of economizer
First after in vertical well gas flue 15, ammonia-gas spraying device sprays into ammonia into flue by ammonia-spraying grid 1, when ammonia-gas spraying device receives
When the instruction that SCR inlet measuring point 5 is fed back, ammonia-gas spraying device needs certain response time, for different ammonia preparation processes,
The time of response is also different, evaporates Ammonia Process using liquefied ammonia in the present embodiment, and the response time of ammonia-gas spraying device takes around
4.5s or so, the flue gas for flowing through SCR inlet measuring point 5 at this time will continue to flow into economizer 3, then using ammonia-spraying grid 1, due to
It is separated with certain mounting distance between SCR inlet measuring point 5 and ammonia-spraying grid 1, provides sound for the timely adjustment of ammonia-gas spraying device
Between seasonable, by taking 600MW unit as an example, for boiler 9 under rated load, flue gas flow to ammonia-spraying grid 1 about from SCR inlet measuring point 5
8s is needed, when boiler 9 is under 50% load, due to the reduction of exhaust gas volumn and flue-gas temperature, flue gas flow to spray from SCR inlet measuring point 5
Ammonia grid 1 takes around 16s, and the mounting distance between above-mentioned SCR inlet measuring point 5 and ammonia-spraying grid 1 meets ammonia-gas spraying device and rings
Requirement between seasonable.
The lateral flue 16 in top is first flowed through by the flue gas of ammonia-spraying grid 1, then proceedes to vertical well gas flue 17 after flowing to second,
SCR reactor 2 is equipped with after second in vertical well gas flue 17, the front side of SCR reactor 2 is equipped with the first flue gas flow monitoring device, stream
Nitrogen oxides and ammonia hair of the flue gas of vertical well gas flue 17 in SCR reactor 2 under the action of catalyst, in flue gas after to second
Raw catalytic reduction reaction, generates free of contamination nitrogen and water, to achieve the purpose that remove nitrogen oxides.Wherein the first flue gas stream
The purpose of amount monitoring device is used to measure the flue gas flow of 2 inlet of SCR reactor, then surveys flue gas flow and SCR inlet
The nitrous oxides concentration that point 5 is measured is multiplied to obtain the flow of nitrogen oxides, calculates corresponding spray ammonia in conjunction with SCR design efficiency
Amount finally controls the ammonia spraying amount of spray nitrogen system premised on the ammonia spraying amount of above-mentioned calculating.From SCR reactor 2 flow out flue gas according to
Secondary to flow through exiting flue gas flow measuring point 8 and the outlet SCR measuring point 6, wherein exiting flue gas flow measuring point 8 is measured SCR reactor 2 and is gone out
The flue gas flow at mouthful place, SCR export measuring point 6 measure respectively the nitrous oxides concentration in 2 exit of SCR reactor, oxygen content and
Temperature.
Ammonia-spraying grid in the present embodiment is as shown in figure 3, ammonia-spraying grid includes spray ammonia supervisor 10 and spray ammonia branch pipe 11, spray ammonia branch
Pipe 11 is equipped with regulating valve 12 and flow measuring point 13, can be by adjusting each spray ammonia branch for the variation for adapting to nitrous oxides concentration
Regulating valve 12 on pipe 11 adjusts the ammonia spraying amount in each region of ammonia-spraying grid.
In other embodiments：First oxygen concentration monitoring device of SCR inlet measuring point and the first temperature monitoring device
It can be arranged at other flue positions between SCR inlet measuring point and ammonia-spraying grid.
Claims (10)
1. equipment for denitrifying flue gas, including the preceding vertical well gas flue set gradually along flow of flue gas direction and rear pass, after described
Ammonia-gas spraying device and SCR reactor are disposed with along flow of flue gas direction in flue, it is characterised in that：The preceding vertical shaft cigarette
The inlet in road is provided with the first nitrous oxides concentration monitoring for monitoring the nitrogen oxides in effluent concentration flowed out from burner hearth
Device.
2. equipment for denitrifying flue gas according to claim 1, it is characterised in that：The rear pass include with preceding vertical well gas flue simultaneously
Vertical well gas flue after vertical well gas flue and second after the first of row arrangement, vertical well gas flue bottom is corresponding after preceding vertical well gas flue and first connects
It is logical, it is interconnected at the top of vertical well gas flue after vertical well gas flue and second after first, vertical shaft cigarette is arranged after first in the ammonia-gas spraying device
In road, the setting of SCR reactor is after second in vertical well gas flue.
3. equipment for denitrifying flue gas according to claim 2, it is characterised in that：Vertical shaft cigarette after vertical well gas flue and second after first
Road is connected to by top transverse direction flue.
4. equipment for denitrifying flue gas according to claim 2, it is characterised in that：The equipment for denitrifying flue gas further includes for supervising
Control furnace outlet after, before ammonia-gas spraying device in flue oxygen concentration the first oxygen concentration monitoring device, first oxygen
Before concentration monitoring device is arranged at the entry position of flue vertical shaft.
5. equipment for denitrifying flue gas according to claim 2, it is characterised in that：The equipment for denitrifying flue gas further includes for supervising
Control furnace outlet after, before ammonia-gas spraying device in flue temperature the first temperature monitoring device, first temperature monitoring device
Before being arranged at the entry position of flue vertical shaft.
6. equipment for denitrifying flue gas according to any one of claims 1-5, it is characterised in that：The equipment for denitrifying flue gas is also
Including the second nitrous oxides concentration prison for monitoring the nitrous oxides concentration in catalytic reduction reaction rear pass in SCR reactor
Device is surveyed, the second nitrous oxides concentration monitoring device is arranged in the rear side of SCR reactor.
7. equipment for denitrifying flue gas according to claim 6, it is characterised in that：It there also is provided on rear side of the SCR reactor
Second oxygen concentration monitoring device and second temperature monitoring device.
8. equipment for denitrifying flue gas according to any one of claims 1-5, it is characterised in that：The equipment for denitrifying flue gas is also
Including the first flue gas flow monitoring device at SCR reactor inlet is arranged in.
9. equipment for denitrifying flue gas according to any one of claims 1-5, it is characterised in that：The equipment for denitrifying flue gas is also
The second flue gas flow monitoring device including SCR reactor exit is arranged in.
10. equipment for denitrifying flue gas according to any one of claims 1-5, it is characterised in that：In the preceding vertical well gas flue
Economizer is equipped in the downstream of the first nitrous oxides concentration monitoring device along flow of flue gas direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820283231.1U CN208097812U (en) | 2018-02-28 | 2018-02-28 | A kind of equipment for denitrifying flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820283231.1U CN208097812U (en) | 2018-02-28 | 2018-02-28 | A kind of equipment for denitrifying flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208097812U true CN208097812U (en) | 2018-11-16 |
Family
ID=64124885
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820283231.1U Active CN208097812U (en) | 2018-02-28 | 2018-02-28 | A kind of equipment for denitrifying flue gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603492A (en) * | 2019-01-28 | 2019-04-12 | 烟台龙源电力技术股份有限公司 | Boiler separator and boiler |
| CN112892209A (en) * | 2021-01-25 | 2021-06-04 | 山东戈尔环境科技有限公司 | Ammonia spraying control system |
| CN114699889A (en) * | 2022-04-19 | 2022-07-05 | 东方电气集团东方锅炉股份有限公司 | SCR denitration system capable of accurately controlling ammonia injection amount |
-
2018
- 2018-02-28 CN CN201820283231.1U patent/CN208097812U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603492A (en) * | 2019-01-28 | 2019-04-12 | 烟台龙源电力技术股份有限公司 | Boiler separator and boiler |
| CN112892209A (en) * | 2021-01-25 | 2021-06-04 | 山东戈尔环境科技有限公司 | Ammonia spraying control system |
| CN114699889A (en) * | 2022-04-19 | 2022-07-05 | 东方电气集团东方锅炉股份有限公司 | SCR denitration system capable of accurately controlling ammonia injection amount |
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