CN109603528A - A kind of denitrating system and its working method of multi-stage reacting device - Google Patents
A kind of denitrating system and its working method of multi-stage reacting device Download PDFInfo
- Publication number
- CN109603528A CN109603528A CN201811650908.1A CN201811650908A CN109603528A CN 109603528 A CN109603528 A CN 109603528A CN 201811650908 A CN201811650908 A CN 201811650908A CN 109603528 A CN109603528 A CN 109603528A
- Authority
- CN
- China
- Prior art keywords
- level
- regulating device
- baffle door
- door regulating
- mixing arrangement
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 270
- 230000001105 regulatory effect Effects 0.000 claims abstract description 160
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 135
- 239000007921 spray Substances 0.000 claims abstract description 101
- 239000003546 flue gas Substances 0.000 claims abstract description 49
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000000605 extraction Methods 0.000 claims abstract description 24
- 239000000779 smoke Substances 0.000 claims abstract description 20
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 239000003054 catalyst Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 2
- 208000028659 discharge Diseases 0.000 abstract 2
- 230000026676 system process Effects 0.000 abstract 1
- 235000019504 cigarettes Nutrition 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 5
- 239000012495 reaction gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- 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
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of denitrating system of multi-stage reacting device and its working methods, including boiler, economizer, economizer hopper, baffle door regulating device, spray ammonia mixing arrangement, reductant supply system, Benitration reactor, air preheater, dust-extraction unit, desulfurizer, plasma denitrification apparatus and chimney；Flue gas enters economizer after boiler discharge, through economizer hopper ash disposal, ammonia mixing arrangement is sprayed by one baffle door regulating device, second level baffle door regulating device, level-one spray ammonia mixing arrangement, second level, enter level-one Benitration reactor and second level Benitration reactor later, air preheater, dust-extraction unit, desulfurizer, three-level baffle door regulating device, level Four baffle door regulating device and plasma denitrification apparatus are sequentially entered again, are finally discharged into chimney.Present system process is simple, flexible operation, and denitration efficiency is high, and can solve causes denitration that can not put into operation because the low smoke temperature of unit load is low in turn results in NOxThe problems such as risk of discharge beyond standards, application prospect is extensive.
Description
Technical field
The present invention relates to a kind of denitrating system of multi-stage reacting device and its working methods, belong to industrial waste gas purifying environmental protection
And energy field.
Background technique
The advantages that SCR gas denitrifying technology is stablized with it, is efficient is by denitration engineering institute, overwhelming majority coal-fired power plant, China
Using general denitration efficiency can reach 80% or more.With carrying forward vigorously for coal-burning power plant, China minimum discharge transformation, it is desirable that NOx
Concentration of emission is not higher than 50mg/m3, the Ji gas neck that some areas such as Hebei province is put into effect does [2018] No. 156 texts and points out coal-burning power plant
Boiler for deeply emission reduction acceptance criteria is under conditions of benchmark oxygen content 6%, and discharged nitrous oxides concentration is referring to not higher than 30mg/
Nm3(W type flame hearth coal-fired electric generation furnace discharged nitrous oxides concentration is not higher than 50mg/Nm3), corresponding denitration efficiency is often wanted
It asks and reaches 90% or more even higher, only increasing ammonia spraying amount causes to improve denitration efficiency often along with the escaping of ammonia is exceeded
Ammonium hydrogen sulfate generates, larger to denitrification apparatus and the harm of upstream device safe and stable operation, and essence required by high denitration efficiency
It is higher to refine the practical control difficulty of flow field uniformity.Meanwhile generally facing that runing time is few, load in view of current coal-fired power plant
Low severe situation, it is contemplated that very long-term coal-burning power plant will remain in underrun situation from now on, thus bring load
Low smoke temperature is low to lead to that denitration can not put into operation or denitration efficiency is not caught up with, and eventually leads to environmentally friendly risk of exceeding criterion and greatly improves, influences to take off
The stability and reliability of nitre device operation.
In the prior art, CN105771646A discloses a kind of two-compartment reactor for SCR denitration, by de- at two
Co-walled plate connection, which is realized, between nitre reactor is arranged in juxtaposition to solve the problems, such as denitration plate vertical space deficiency, but only due to it
There is level-one ammonia-spraying grid, can not accomplish fining flow field uniformity required by high denitration efficiency, and such arrangement reactor bottom
Portion is easier dust stratification, in addition such arrangement of reactor, and when unit operation, two-compartment reactor must be run simultaneously, and work as unit
When underrun, the risk for causing denitrification apparatus that can not put into operation because smoke temperature is low not can avoid.
In the prior art, CN107694305A discloses a kind of concatenated SCR denitration system of two-stage reactor and its work
Method can be realized by the way that setting level-one before two-stage reactor series connection inverted U arrangement and every stage reactor is sprayed ammonia mixing arrangement
NOxEfficient removal and the dust stratification wear problem for avoiding traditional SCR denitration technology common, but due between two-stage series connection reactor only
Second reactor flow field is adjusted by setting deflector, and often the connected flue of two-stage reactor is shorter for such arrangement, it can not
Second reactor flow field is sufficiently optimized, in addition such reactor arranged in series, it must two-stage reaction when unit operation
Device runs simultaneously and when performing low-load running of machine set, and the risk for causing denitrification apparatus that can not put into operation because smoke temperature is low not can avoid yet.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide it is a kind of design rationally, efficiently
Reliably, meet coal-fired plant flue gas NOxHigh denitration efficiency required by the even lower discharge of minimum discharge and underrun
The denitrating system and its working method of multi-stage reacting device.
Technical solution used by the present invention solves the above problems is: a kind of denitrating system of multi-stage reacting device, special
Sign is: including boiler, economizer, economizer hopper, one baffle door regulating device, level-one spray ammonia mixing arrangement, second level gear
Plate door regulating device, second level spray ammonia mixing arrangement, reductant supply system, level-one Benitration reactor, second level Benitration reactor, sky
Pre- device, dust-extraction unit, desulfurizer, three-level baffle door regulating device, level Four baffle door regulating device, plasma denitrification apparatus
And chimney；The boiler is connected to economizer, and economizer hopper is arranged in the lower section of economizer, and the economizer is respectively with one
Grade Benitration reactor, the connection of second level Benitration reactor, and one baffle door is set between economizer and level-one Benitration reactor
Regulating device and level-one spray ammonia mixing arrangement, and second level baffle door regulating device is arranged between economizer and second level Benitration reactor
Ammonia mixing arrangement is sprayed with second level, the reductant supply system sprays ammonia mixing arrangement with level-one spray ammonia mixing arrangement, second level respectively
Connection, the level-one Benitration reactor and second level Benitration reactor are connected to air preheater, and air preheater, dust-extraction unit and desulfurization
Device is sequentially communicated, and the desulfurizer is directly connect with chimney all the way, and the setting of level Four baffle door regulating device is filled in desulfurization
Between the entrance of the outlet and chimney set, the desulfurizer another way is connected to by plasma denitrification apparatus with chimney, and
The setting of three-level baffle door regulating device is between desulfurizer outlet and plasma denitrification apparatus entrance.
Level-one Benitration reactor and second level Benitration reactor of the present invention are parallel arrangement.
The entrance of level-one spray ammonia mixing arrangement, the second level gear is arranged in one baffle door regulating device of the present invention
The entrance of second level spray ammonia mixing arrangement is arranged in plate door regulating device.
The entrance of level-one Benitration reactor is arranged in level-one spray ammonia mixing arrangement of the present invention, and the second level spray ammonia is mixed
Attach together the entrance installed in second level Benitration reactor.
The size of level-one Benitration reactor of the present invention is designed by 100% design exhaust gas volumn, and the second level denitration is anti-
The size of device is answered to be designed by 100% design exhaust gas volumn.
A kind of working method of the denitrating system of multi-stage reacting device, it is characterised in that: the working method is as follows: flue gas
After boiler discharge, economizer is initially entered, through economizer hopper ash disposal；
When one baffle door regulating device open, second level baffle door regulating device close, three-level baffle door regulating device close and
When level Four baffle door regulating device is opened, flue gas enters level-one spray ammonia mixing arrangement by one baffle door regulating device, in cigarette
The ammonia sprayed in road with level-one spray ammonia mixing arrangement enters level-one Benitration reactor after mixing, the cigarette after denitration reaction
Gas enters air preheater, then is successively discharged into chimney after dust-extraction unit, desulfurizer and level Four baffle door regulating device；
When one baffle door regulating device open, second level baffle door regulating device close, three-level baffle door regulating device open and
When level Four baffle door regulating device is closed, flue gas enters level-one spray ammonia mixing arrangement by one baffle door regulating device, in cigarette
The ammonia sprayed in road with level-one spray ammonia mixing arrangement enters level-one Benitration reactor after mixing, the cigarette after denitration reaction
Gas enters air preheater, then successively passes through dust-extraction unit, desulfurizer, three-level baffle door regulating device and plasma denitrification apparatus
After be discharged into chimney；
When one baffle door regulating device close, second level baffle door regulating device open, three-level baffle door regulating device close and
When level Four baffle door regulating device is opened, flue gas enters second level spray ammonia mixing arrangement by second level baffle door regulating device, in cigarette
The ammonia sprayed in road with second level spray ammonia mixing arrangement enters second level Benitration reactor after mixing, the cigarette after denitration reaction
Gas enters air preheater, then is successively discharged into chimney after dust-extraction unit, desulfurizer and level Four baffle door regulating device；
When one baffle door regulating device close, second level baffle door regulating device open, three-level baffle door regulating device open and
When level Four baffle door regulating device is closed, flue gas enters second level spray ammonia mixing arrangement by second level baffle door regulating device, in cigarette
The ammonia sprayed in road with second level spray ammonia mixing arrangement enters second level Benitration reactor after mixing, the cigarette after denitration reaction
Gas enters air preheater, then successively passes through dust-extraction unit, desulfurizer, three-level baffle door regulating device and plasma denitrification apparatus
After be discharged into chimney；
When one baffle door regulating device open, second level baffle door regulating device open, three-level baffle door regulating device close and
When level Four baffle door regulating device is opened, part of smoke enters level-one spray ammonia mixing dress by one baffle door regulating device
It sets, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement enters level-one Benitration reactor, another part cigarette after mixing
Gas enters second level spray ammonia mixing arrangement by second level baffle door regulating device, sprays in flue with second level spray ammonia mixing arrangement
Enter second level Benitration reactor after ammonia mixing, the flue gas after denitration reaction enters air preheater, then successively passes through dedusting
Chimney is discharged into after device, desulfurizer and level Four baffle door regulating device；
When one baffle door regulating device open, second level baffle door regulating device open, three-level baffle door regulating device open and
When level Four baffle door regulating device is closed, part of smoke enters level-one spray ammonia mixing dress by one baffle door regulating device
It sets, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement enters level-one Benitration reactor, another part cigarette after mixing
Gas enters second level spray ammonia mixing arrangement by second level baffle door regulating device, sprays in flue with second level spray ammonia mixing arrangement
Enter second level Benitration reactor after ammonia mixing, the flue gas after denitration reaction enters air preheater, then successively passes through dedusting
Chimney is discharged into after device, desulfurizer, three-level baffle door regulating device and plasma denitrification apparatus.
Wherein, the ammonia of level-one spray ammonia mixing arrangement and second level spray ammonia mixing arrangement is provided by reductant supply system.
The present invention passes through monitoring unit load, economizer exit exhaust gas volumn, flue-gas temperature, NOxConcentration and air preheater enter
Mouth NOxConcentration, ammonia slip concentration and desulfurizer export NOxConcentration controls one baffle door regulating device, second level baffle door tune
The aperture of regulating device, three-level baffle door regulating device and level Four baffle door regulating device adjusts and contains NOxFlue gas enters level-one denitration
The ratio of reactor, second level Benitration reactor and plasma denitrification apparatus, adjusts level-one spray ammonia mixing arrangement and second level sprays ammonia
Ammonia spraying amount, the plasma denitrification apparatus electricity consumption of mixing arrangement control level-one Benitration reactor, second level Benitration reactor and wait
The denitration efficiency of gas ions denitrification apparatus.
It is 320-420 DEG C that level-one denitrating catalyst in level-one Benitration reactor of the present invention, which is applicable in smoke temperature,；Described two
It is 250-420 DEG C that second level denitrating catalyst in grade Benitration reactor, which is applicable in smoke temperature,.
The entrance flue gas temperature of plasma denitrification apparatus of the present invention is 100-140 DEG C；The plasma denitration
The entrance NO of devicexThe concentration scope of application is 50-200mg/m3。
Compared with prior art, the present invention having the following advantages that and effect: by two-stage Benitration reactor size by 100%
Design exhaust gas volumn design is arranged in juxtaposition, and is able to satisfy the requirement of exhaust gas volumn under the various load conditions of boiler, is opened by controllable register door
Degree, spray ammonia mixing arrangement ammonia spraying amount and plasma denitrification apparatus electricity consumption can flexibly switching control participate in denitration reaction denitration
Reactor and plasma denitrification apparatus are greatly improved existing denitration efficiency and meet coal-fired plant flue gas NOxMinimum discharge is very
To more low emission requirement, and can switch to when unit load is low to lead to flue-gas temperature lower than the minimum spray ammonia temperature of denitrification apparatus
Second level Benitration reactor realizes that denitrification apparatus bringing normally into operation avoids NO by second level denitrating catalystxDischarge beyond standards.Compared to existing
Technology, the present invention have system flow simple, and flexible operation, strong operability, denitration efficiency is high, and less energy consumption is at low cost, and energy
Solve causes denitration that can not put into operation because the low smoke temperature of unit load is low in turn results in NOxIt the advantages that risk problem of discharge beyond standards, answers
It is extensive with prospect.
Detailed description of the invention
Fig. 1 is the work structure diagram of level-one Benitration reactor in the embodiment of the present invention.
Fig. 2 is the work structure diagram of second level Benitration reactor in the embodiment of the present invention.
Fig. 3 is the overall structure diagram of the embodiment of the present invention.
In figure: boiler 1, economizer 2, economizer hopper 3, one baffle door regulating device 4, level-one spray ammonia mixing arrangement 5,
Level-one Benitration reactor 6, second level baffle door regulating device 7, second level spray ammonia mixing arrangement 8, second level Benitration reactor 9, reducing agent
Supply system 10, air preheater 11, dust-extraction unit 12, desulfurizer 13, three-level baffle door regulating device 14, level Four baffle door are adjusted
Device 15, plasma denitrification apparatus 16, chimney 17.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to Fig. 1 to Fig. 3, the denitrating system of the multi-stage reacting device in the present embodiment, including boiler 1, economizer 2, save
Coal device ash bucket 3, one baffle door regulating device 4, level-one spray ammonia mixing arrangement 5, second level baffle door regulating device 7, second level spray ammonia
Mixing arrangement 8, reductant supply system 10, level-one Benitration reactor 6, second level Benitration reactor 9, air preheater 11, dust-extraction unit
12, desulfurizer 13, three-level baffle door regulating device 14, level Four baffle door regulating device 15,16 and of plasma denitrification apparatus
Chimney 17.
Boiler 1 is connected to economizer 2, and economizer hopper 3 is arranged in the lower section of economizer 2, economizer 2 respectively with level-one
Benitration reactor 6, second level Benitration reactor 9 are connected to, and one baffle are arranged between economizer 2 and level-one Benitration reactor 6
Door regulating device 4 and level-one spray ammonia mixing arrangement 5, and second level baffle door tune is arranged between economizer 2 and second level Benitration reactor 9
Regulating device 7 and second level spray ammonia mixing arrangement 8, and reductant supply system 10 is mixed with level-one spray ammonia mixing arrangement 5, second level spray ammonia respectively
It attaches together and sets 8 connections, level-one Benitration reactor 6 and second level Benitration reactor 9 are connected to air preheater 11, and air preheater 11, dedusting
Device 12 and desulfurizer 13 are sequentially communicated, and 13 1 tunnel of desulfurizer is directly connect with chimney 17, and level Four baffle door adjusts dress
It sets between the outlet that 15 are arranged in desulfurizer 13 and the entrance of chimney 17,13 another way of desulfurizer passes through plasma denitration
Device 16 is connected to chimney 17, and the setting of three-level baffle door regulating device 14 is in the outlet of desulfurizer 13 and plasma denitration dress
It sets between 16 entrances.
In the present embodiment, level-one Benitration reactor 6 and second level Benitration reactor 9 are parallel arrangement.
In the present embodiment, the entrance of level-one spray ammonia mixing arrangement 5, second level gear is arranged in one baffle door regulating device 4
The entrance of second level spray ammonia mixing arrangement 8 is arranged in plate door regulating device 7.
In the present embodiment, the entrance of level-one Benitration reactor 6 is arranged in level-one spray ammonia mixing arrangement 5, and it is mixed that second level sprays ammonia
It attaches together and sets 8 entrances that second level Benitration reactor 9 is set.
In the present embodiment, the size of level-one Benitration reactor 6 is designed by 100% design exhaust gas volumn, second level denitration reaction
The size of device 9 is designed by 100% design exhaust gas volumn.
The working method of the denitrating system of multi-stage reacting device is as follows: flue gas initially enters economizer after the discharge of boiler 1
2, through 3 ash disposal of economizer hopper；
When one baffle door regulating device 4 is opened, second level baffle door regulating device 7 is closed, three-level baffle door regulating device 14 is closed
Close and level Four baffle door regulating device 15 open when, flue gas by one baffle door regulating device 4 enter level-one spray ammonia mixing dress
5 are set, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement 5 enters level-one Benitration reactor 6 after mixing, by denitration
Flue gas after reaction enters air preheater 11, then successively passes through dust-extraction unit 12, desulfurizer 13 and level Four baffle door regulating device
Chimney 17 is discharged into after 15；
When one baffle door regulating device 4 is opened, second level baffle door regulating device 7 is closed, three-level baffle door regulating device 14 is opened
Open and level Four baffle door regulating device 15 close when, flue gas by one baffle door regulating device 4 enter level-one spray ammonia mixing dress
5 are set, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement 5 enters level-one Benitration reactor 6 after mixing, by denitration
Flue gas after reaction enters air preheater 11, then successively passes through dust-extraction unit 12, desulfurizer 13, three-level baffle door regulating device 14
With chimney 17 is discharged into after plasma denitrification apparatus 16；
When one baffle door regulating device 4 is closed, second level baffle door regulating device 7 is opened, three-level baffle door regulating device 14 is closed
Close and level Four baffle door regulating device 15 open when, flue gas by second level baffle door regulating device 7 enter second level spray ammonia mixing dress
8 are set, the ammonia sprayed in flue with second level spray ammonia mixing arrangement 8 enters second level Benitration reactor 9 after mixing, by denitration
Flue gas after reaction enters air preheater 11, then successively passes through dust-extraction unit 12, desulfurizer 13 and level Four baffle door regulating device
Chimney 17 is discharged into after 15；
When one baffle door regulating device 4 is closed, second level baffle door regulating device 7 is opened, three-level baffle door regulating device 14 is opened
Open and level Four baffle door regulating device 15 close when, flue gas by second level baffle door regulating device 7 enter second level spray ammonia mixing dress
8 are set, the ammonia sprayed in flue with second level spray ammonia mixing arrangement 8 enters second level Benitration reactor 9 after mixing, by denitration
Flue gas after reaction enters air preheater 11, then successively passes through dust-extraction unit 12, desulfurizer 13, three-level baffle door regulating device 14
With chimney 17 is discharged into after plasma denitrification apparatus 16；
When one baffle door regulating device 4 is opened, second level baffle door regulating device 7 is opened, three-level baffle door regulating device 14 is closed
Close and level Four baffle door regulating device 15 open when, part of smoke by one baffle door regulating device 4 enter level-one spray ammonia
Mixing arrangement 5, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement 5 enter level-one Benitration reactor 6 after mixing, separately
Part of smoke enters second level by second level baffle door regulating device 7 and sprays ammonia mixing arrangement 8, mixes in flue with second level spray ammonia
Entering second level Benitration reactor 9 after the ammonia mixing that device 8 sprays, the flue gas after denitration reaction enters air preheater 11,
Chimney 17 successively is discharged into after dust-extraction unit 12, desulfurizer 13 and level Four baffle door regulating device 15 again；
When one baffle door regulating device 4 is opened, second level baffle door regulating device 7 is opened, three-level baffle door regulating device 14 is opened
Open and level Four baffle door regulating device 15 close when, part of smoke by one baffle door regulating device 4 enter level-one spray ammonia
Mixing arrangement 5, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement 5 enter level-one Benitration reactor 6 after mixing, separately
Part of smoke enters second level by second level baffle door regulating device 7 and sprays ammonia mixing arrangement 8, mixes in flue with second level spray ammonia
Entering second level Benitration reactor 9 after the ammonia mixing that device 8 sprays, the flue gas after denitration reaction enters air preheater 11,
Successively pass through dust-extraction unit 12,16 heel row of desulfurizer 13, three-level baffle door regulating device 14 and plasma denitrification apparatus again
Enter chimney 17.
Level-one sprays ammonia mixing arrangement 5 and the ammonia of second level spray ammonia mixing arrangement 8 is provided by reductant supply system 10.
By monitoring unit load, 2 exiting flue gas amount of economizer, flue-gas temperature, NOx11 entrance of concentration and air preheater
NOxConcentration, ammonia slip concentration and desulfurizer 13 export NOxConcentration controls one baffle door regulating device 4, second level baffle door tune
The aperture of regulating device 7, three-level baffle door regulating device 14 and level Four baffle door regulating device 15 adjusts and contains NOxFlue gas enters one
The ratio of grade Benitration reactor 6, second level Benitration reactor 9 and plasma denitrification apparatus 16 adjusts level-one and sprays ammonia mixing arrangement 5
With ammonia spraying amount, 16 electricity consumption of plasma denitrification apparatus of second level spray ammonia mixing arrangement 8, level-one Benitration reactor 6, second level are controlled
The denitration efficiency of Benitration reactor 9 and plasma denitrification apparatus 16.
It is 320-420 DEG C that level-one denitrating catalyst in level-one Benitration reactor 6, which is applicable in smoke temperature,；Second level Benitration reactor 9
In second level denitrating catalyst be applicable in smoke temperature be 250-420 DEG C.
The entrance flue gas temperature of plasma denitrification apparatus 16 is 100-140 DEG C；The entrance of plasma denitrification apparatus 16
NOxThe concentration scope of application is 50-200mg/m3。
Denitrating catalyst pattern, volume and the arrangement number of plies can be calculated according to flue gas condition and performance requirement and be determined.
It by two-stage Benitration reactor and the organic parallel connection of plasma denitrification apparatus 16, not only independently of each other, but also cooperates, leads to
It crosses two-stage Benitration reactor size to be arranged in juxtaposition by 100% design exhaust gas volumn design, is able to satisfy cigarette under the various load conditions of boiler 1
The requirement of tolerance, can spirit by controllable register door aperture, spray ammonia mixing arrangement ammonia spraying amount and 16 electricity consumption of plasma denitrification apparatus
Switching control living participates in the Benitration reactor and plasma denitrification apparatus 16 of denitration reaction, is greatly improved existing denitration efficiency
Meet coal-fired plant flue gas NOxThe even lower emission request of minimum discharge, and cause flue-gas temperature to be lower than when unit load is low
It can switch to second level Benitration reactor 9 when 13 minimum spray ammonia temperature of denitrification apparatus, denitration dress realized by second level denitrating catalyst
13 bringing normally into operation are set, NO is avoidedxDischarge beyond standards.Compared with prior art, the present embodiment has system flow simple, flexible operation,
Strong operability, denitration efficiency is high, and less energy consumption is at low cost, and can solve causes denitration that can not throw because the low smoke temperature of unit load is low
Fortune in turn results in NOxThe advantages that risk problem of discharge beyond standards, application prospect is extensive.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology changes and retouches made without departing from the spirit and scope of the invention, should belong to this hair
Bright protection scope.
Claims (10)
1. a kind of denitrating system of multi-stage reacting device, it is characterised in that: including boiler (1), economizer (2), economizer hopper
(3), one baffle door regulating device (4), level-one spray ammonia mixing arrangement (5), second level baffle door regulating device (7), second level spray ammonia
Mixing arrangement (8), reductant supply system (10), level-one Benitration reactor (6), second level Benitration reactor (9), air preheater
(11), dust-extraction unit (12), desulfurizer (13), three-level baffle door regulating device (14), level Four baffle door regulating device (15),
Plasma denitrification apparatus (16) and chimney (17)；The boiler (1) is connected to economizer (2), and economizer hopper (3) is arranged
In the lower section of economizer (2), the economizer (2) is connected to level-one Benitration reactor (6), second level Benitration reactor (9) respectively,
And one baffle door regulating device (4) and level-one spray ammonia mixing dress are set between economizer (2) and level-one Benitration reactor (6)
(5) are set, second level baffle door regulating device (7) are set between economizer (2) and second level Benitration reactor (9) and second level spray ammonia is mixed
It attaches together and sets (8), the reductant supply system (10) sprays ammonia mixing arrangement (8) with level-one spray ammonia mixing arrangement (5), second level respectively
Connection, the level-one Benitration reactor (6) and second level Benitration reactor (9) are connected to air preheater (11), and air preheater (11),
Dust-extraction unit (12) and desulfurizer (13) are sequentially communicated, and the desulfurizer (13) directly connect with chimney (17) all the way, and
Level Four baffle door regulating device (15) is arranged between the outlet of desulfurizer (13) and the entrance of chimney (17), the desulfurization dress
It sets (13) another way to be connected to by plasma denitrification apparatus (16) with chimney (17), and three-level baffle door regulating device (14) is set
It sets between desulfurizer (13) outlet and plasma denitrification apparatus (16) entrance.
2. the denitrating system of multi-stage reacting device according to claim 1, it is characterised in that: the level-one Benitration reactor
(6) and second level Benitration reactor (9) is parallel arrangement.
3. the denitrating system of multi-stage reacting device according to claim 1, it is characterised in that: the one baffle door is adjusted
Device (4) setting is in the entrance of level-one spray ammonia mixing arrangement (5), and second level baffle door regulating device (7) setting is in second level
Spray the entrance of ammonia mixing arrangement (8).
4. the denitrating system of multi-stage reacting device according to claim 1, it is characterised in that: the level-one spray ammonia mixing dress
(5) setting is set in the entrance of level-one Benitration reactor (6), second level spray ammonia mixing arrangement (8) setting is anti-in second level denitration
Answer the entrance of device (9).
5. the denitrating system of multi-stage reacting device according to claim 1, it is characterised in that: the level-one Benitration reactor
(6) size is designed by 100% design exhaust gas volumn, and the size of the second level Benitration reactor (9) is by 100% design exhaust gas volumn
It is designed.
6. a kind of working method of the denitrating system of multi-stage reacting device according to any one of claims 1 to 5, feature
Be: the working method is as follows: after flue gas is discharged from boiler (1), initially entering economizer (2), removes through economizer hopper (3)
Ash；
When one baffle door regulating device (4) is opened, second level baffle door regulating device (7) is closed, three-level baffle door regulating device
(14) close and level Four baffle door regulating device (15) open when, flue gas by one baffle door regulating device (4) enter level-one
It sprays ammonia mixing arrangement (5), it is anti-that the ammonia sprayed in flue with level-one spray ammonia mixing arrangement (5) enters level-one denitration after mixing
It answers device (6), the flue gas after denitration reaction enters air preheater (11), then successively passes through dust-extraction unit (12), desulfurizer
(13) and after level Four baffle door regulating device (15) it is discharged into chimney (17)；
When one baffle door regulating device (4) is opened, second level baffle door regulating device (7) is closed, three-level baffle door regulating device
(14) open and level Four baffle door regulating device (15) close when, flue gas by one baffle door regulating device (4) enter level-one
It sprays ammonia mixing arrangement (5), it is anti-that the ammonia sprayed in flue with level-one spray ammonia mixing arrangement (5) enters level-one denitration after mixing
It answers device (6), the flue gas after denitration reaction enters air preheater (11), then successively passes through dust-extraction unit (12), desulfurizer
(13), chimney (17) are discharged into after three-level baffle door regulating device (14) and plasma denitrification apparatus (16)；
When one baffle door regulating device (4) is closed, second level baffle door regulating device (7) is opened, three-level baffle door regulating device
(14) close and level Four baffle door regulating device (15) open when, flue gas by second level baffle door regulating device (7) enter second level
It sprays ammonia mixing arrangement (8), it is anti-that the ammonia sprayed in flue with second level spray ammonia mixing arrangement (8) enters second level denitration after mixing
It answers device (9), the flue gas after denitration reaction enters air preheater (11), then successively passes through dust-extraction unit (12), desulfurizer
(13) and after level Four baffle door regulating device (15) it is discharged into chimney (17)；
When one baffle door regulating device (4) is closed, second level baffle door regulating device (7) is opened, three-level baffle door regulating device
(14) open and level Four baffle door regulating device (15) close when, flue gas by second level baffle door regulating device (7) enter second level
It sprays ammonia mixing arrangement (8), it is anti-that the ammonia sprayed in flue with second level spray ammonia mixing arrangement (8) enters second level denitration after mixing
It answers device (9), the flue gas after denitration reaction enters air preheater (11), then successively passes through dust-extraction unit (12), desulfurizer
(13), chimney (17) are discharged into after three-level baffle door regulating device (14) and plasma denitrification apparatus (16)；
When one baffle door regulating device (4) is opened, second level baffle door regulating device (7) is opened, three-level baffle door regulating device
(14) close and level Four baffle door regulating device (15) open when, part of smoke by one baffle door regulating device (4) into
Enter level-one spray ammonia mixing arrangement (5), the ammonia sprayed in flue with level-one spray ammonia mixing arrangement (5) enters level-one after mixing
Benitration reactor (6), another part flue gas enter second level spray ammonia mixing arrangement (8) by second level baffle door regulating device (7),
The ammonia sprayed in flue with second level spray ammonia mixing arrangement (8) enters second level Benitration reactor (9) after mixing, anti-by denitration
Flue gas after answering enters air preheater (11), then successively adjusts by dust-extraction unit (12), desulfurizer (13) and level Four baffle door
Chimney (17) are discharged into after device (15)；
When one baffle door regulating device (4) is opened, second level baffle door regulating device (7) is opened, three-level baffle door regulating device
(14) open and level Four baffle door regulating device (15) close when, part of smoke by one baffle door regulating device (4) into
Enter level-one spray ammonia mixing arrangement (5), the ammonia sprayed in flue with level-one spray ammonia mixing arrangement (5) enters level-one after mixing
Benitration reactor (6), another part flue gas enter second level spray ammonia mixing arrangement (8) by second level baffle door regulating device (7),
The ammonia sprayed in flue with second level spray ammonia mixing arrangement (8) enters second level Benitration reactor (9) after mixing, anti-by denitration
Flue gas after answering enters air preheater (11), then successively adjusts dress by dust-extraction unit (12), desulfurizer (13), three-level baffle door
Chimney (17) are discharged into after setting (14) and plasma denitrification apparatus (16).
7. the working method of the denitrating system of multi-stage reacting device according to claim 6, it is characterised in that: level-one sprays ammonia
Mixing arrangement (5) and the ammonia of second level spray ammonia mixing arrangement (8) are provided by reductant supply system (10).
8. the working method of the denitrating system of multi-stage reacting device according to claim 6, it is characterised in that: pass through monitoring
Unit load, economizer (2) exiting flue gas amount, flue-gas temperature, NOxConcentration and air preheater (11) entrance NOxConcentration, the escaping of ammonia
Concentration and desulfurizer (13) export NOxConcentration controls one baffle door regulating device (4), second level baffle door regulating device
(7), the aperture of three-level baffle door regulating device (14) and level Four baffle door regulating device (15) adjusts and contains NOxFlue gas enters one
It is mixed to adjust level-one spray ammonia for the ratio of grade Benitration reactor (6), second level Benitration reactor (9) and plasma denitrification apparatus (16)
Ammonia spraying amount, plasma denitrification apparatus (16) electricity consumption for setting (5) and second level spray ammonia mixing arrangement (8) are attached together, control level-one is de-
The denitration efficiency of nitre reactor (6), second level Benitration reactor (9) and plasma denitrification apparatus (16).
9. the working method of the denitrating system of multi-stage reacting device according to claim 8, it is characterised in that: the level-one
It is 320-420 DEG C that level-one denitrating catalyst in Benitration reactor (6), which is applicable in smoke temperature,；In the second level Benitration reactor (9)
It is 250-420 DEG C that second level denitrating catalyst, which is applicable in smoke temperature,.
10. the working method of the denitrating system of multi-stage reacting device according to claim 8, it is characterised in that: described etc.
The entrance flue gas temperature of gas ions denitrification apparatus (16) is 100-140 DEG C；The entrance NO of the plasma denitrification apparatus (16)x
The concentration scope of application is 50-200mg/m3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650908.1A CN109603528B (en) | 2018-12-31 | 2018-12-31 | Denitration system of multistage reaction device and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650908.1A CN109603528B (en) | 2018-12-31 | 2018-12-31 | Denitration system of multistage reaction device and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109603528A true CN109603528A (en) | 2019-04-12 |
| CN109603528B CN109603528B (en) | 2023-11-14 |
Family
ID=66015971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811650908.1A Active CN109603528B (en) | 2018-12-31 | 2018-12-31 | Denitration system of multistage reaction device and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109603528B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102159A (en) * | 2019-05-21 | 2019-08-09 | 成都首创环境工程有限公司 | The dry type removal device and dry type minimizing technology of harmful substance in exhaust gas |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2045300A1 (en) * | 1990-06-25 | 1991-12-26 | Toshihiko Imamoto | Apparatus for treating exhaust gas |
| CN1772347A (en) * | 2005-10-28 | 2006-05-17 | 东南大学 | Adsorption-low temperature plasma synchronized desulfuring and denitrifying apparatus and method |
| CN104437082A (en) * | 2014-12-11 | 2015-03-25 | 中国华能集团清洁能源技术研究院有限公司 | Ultra-clean discharge system and method for fluidized bed boiler |
| JP2015096732A (en) * | 2015-01-05 | 2015-05-21 | 三菱重工業株式会社 | Exhaust gas denitration system, vessel mounted with the same and control method for the same |
| CN205055814U (en) * | 2015-08-14 | 2016-03-02 | 中国神华能源股份有限公司 | A SCR deNOx systems and boiler combustion system that is used for oxygen boosting to burn and air burning |
| CN205055819U (en) * | 2015-10-19 | 2016-03-02 | 上海盛剑环境***科技有限公司 | Flue gas denitration SCR system |
| CN205361063U (en) * | 2016-02-04 | 2016-07-06 | 南通天蓝环保能源成套设备有限公司 | Low temperature SCR reactor deNOx systems that connects in parallel |
| CN105921015A (en) * | 2016-07-04 | 2016-09-07 | 青岛双瑞海洋环境工程股份有限公司 | Soot blowing system of denitrification reactor |
| KR101669598B1 (en) * | 2015-12-02 | 2016-10-26 | 한국남동발전 주식회사 | Cascade control method using IDF outlet NOx analyzer for De-NOx process |
| CN206064161U (en) * | 2016-08-24 | 2017-04-05 | 中电环保股份有限公司 | A kind of middle low-temperature denitration of flue gas device |
| CN106621804A (en) * | 2016-11-15 | 2017-05-10 | 国家电网公司 | Fume ammonia injection mixing device and SCR (selective catalytic reduction) fume denitrification system |
| CN206355834U (en) * | 2016-12-29 | 2017-07-28 | 北京汉唐环保科技股份有限公司 | A kind of device of low-temperature flue gas desulfurization and denitrification integral |
| CN107638803A (en) * | 2017-09-22 | 2018-01-30 | 华电电力科学研究院 | A kind of system and its operation method of twin furnace synthetic operation full load denitration |
| CN107935084A (en) * | 2017-12-13 | 2018-04-20 | 华电电力科学研究院 | A kind of the desulfurization wastewater Zero discharging system and method for the wide load denitration of cooperative achievement |
| CN108211791A (en) * | 2018-02-26 | 2018-06-29 | 山东大学 | A kind of dual chamber modularization alternating denitrating system and method for denitration |
| CN208161340U (en) * | 2018-04-03 | 2018-11-30 | 中国电力工程顾问集团华北电力设计院有限公司 | Full load denitration is realized by removing SO3 and improves the device of boiler efficiency |
| CN209612640U (en) * | 2018-12-31 | 2019-11-12 | 华电电力科学研究院有限公司 | A kind of denitrating system of multi-stage reacting device |
-
2018
- 2018-12-31 CN CN201811650908.1A patent/CN109603528B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2045300A1 (en) * | 1990-06-25 | 1991-12-26 | Toshihiko Imamoto | Apparatus for treating exhaust gas |
| CN1772347A (en) * | 2005-10-28 | 2006-05-17 | 东南大学 | Adsorption-low temperature plasma synchronized desulfuring and denitrifying apparatus and method |
| CN104437082A (en) * | 2014-12-11 | 2015-03-25 | 中国华能集团清洁能源技术研究院有限公司 | Ultra-clean discharge system and method for fluidized bed boiler |
| JP2015096732A (en) * | 2015-01-05 | 2015-05-21 | 三菱重工業株式会社 | Exhaust gas denitration system, vessel mounted with the same and control method for the same |
| CN205055814U (en) * | 2015-08-14 | 2016-03-02 | 中国神华能源股份有限公司 | A SCR deNOx systems and boiler combustion system that is used for oxygen boosting to burn and air burning |
| CN205055819U (en) * | 2015-10-19 | 2016-03-02 | 上海盛剑环境***科技有限公司 | Flue gas denitration SCR system |
| KR101669598B1 (en) * | 2015-12-02 | 2016-10-26 | 한국남동발전 주식회사 | Cascade control method using IDF outlet NOx analyzer for De-NOx process |
| CN205361063U (en) * | 2016-02-04 | 2016-07-06 | 南通天蓝环保能源成套设备有限公司 | Low temperature SCR reactor deNOx systems that connects in parallel |
| CN105921015A (en) * | 2016-07-04 | 2016-09-07 | 青岛双瑞海洋环境工程股份有限公司 | Soot blowing system of denitrification reactor |
| CN206064161U (en) * | 2016-08-24 | 2017-04-05 | 中电环保股份有限公司 | A kind of middle low-temperature denitration of flue gas device |
| CN106621804A (en) * | 2016-11-15 | 2017-05-10 | 国家电网公司 | Fume ammonia injection mixing device and SCR (selective catalytic reduction) fume denitrification system |
| CN206355834U (en) * | 2016-12-29 | 2017-07-28 | 北京汉唐环保科技股份有限公司 | A kind of device of low-temperature flue gas desulfurization and denitrification integral |
| CN107638803A (en) * | 2017-09-22 | 2018-01-30 | 华电电力科学研究院 | A kind of system and its operation method of twin furnace synthetic operation full load denitration |
| CN107935084A (en) * | 2017-12-13 | 2018-04-20 | 华电电力科学研究院 | A kind of the desulfurization wastewater Zero discharging system and method for the wide load denitration of cooperative achievement |
| CN108211791A (en) * | 2018-02-26 | 2018-06-29 | 山东大学 | A kind of dual chamber modularization alternating denitrating system and method for denitration |
| CN208161340U (en) * | 2018-04-03 | 2018-11-30 | 中国电力工程顾问集团华北电力设计院有限公司 | Full load denitration is realized by removing SO3 and improves the device of boiler efficiency |
| CN209612640U (en) * | 2018-12-31 | 2019-11-12 | 华电电力科学研究院有限公司 | A kind of denitrating system of multi-stage reacting device |
Non-Patent Citations (2)
| Title |
|---|
| 苗强;: "脱硝技术的现状及展望", 洁净煤技术, no. 02 * |
| 赵大周;李允超;郑文广;何胜;: "660MW机组SCR喷氨策略的模拟研究", 热能动力工程, no. 08 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102159A (en) * | 2019-05-21 | 2019-08-09 | 成都首创环境工程有限公司 | The dry type removal device and dry type minimizing technology of harmful substance in exhaust gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109603528B (en) | 2023-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109794146B (en) | Grate-rotary kiln SNCR/SCR denitration and active coke desulfurization combined system and process | |
| CN103263828A (en) | Fume gas denitration system of coal-fired boiler based on SNCR (Selective Non-catalytic Reduction) and SCR (Selective Catalytic Reduction) combination method | |
| CN106996572A (en) | Solve the flue gas recirculation structure and method of SCR denitration underrun dust stratification abrasion | |
| CN204724003U (en) | The cleaning system of denitration of boiler smoke | |
| CN203648364U (en) | Coal-fired boiler flue gas denitration system | |
| CN107935084A (en) | A kind of the desulfurization wastewater Zero discharging system and method for the wide load denitration of cooperative achievement | |
| CN209612640U (en) | A kind of denitrating system of multi-stage reacting device | |
| CN212492330U (en) | Active coke combined desulfurization and denitrification system based on pre-oxidation | |
| CN109603528A (en) | A kind of denitrating system and its working method of multi-stage reacting device | |
| CN103405991A (en) | Energy-efficient comprehensive desulfurization and purification system and method for active coke of different flue gases | |
| CN111701413A (en) | Near-zero emission system and process suitable for circulating fluidized bed boiler | |
| CN210473607U (en) | Full-load SCR denitration system of coal-fired boiler | |
| CN205216583U (en) | Full operating mode SCR denitration treatment system | |
| CN208382176U (en) | A kind of flue gas recirculation system | |
| CN209530549U (en) | A kind of SCR denitration system of two-stage reactor parallel running | |
| CN211069654U (en) | Two-stage ammonia injection combined denitration system | |
| CN203281209U (en) | Flue gas denitration system by adopting SNCR and SCR combination method for coal-fired boiler | |
| CN2892253Y (en) | Flue denitrator setting under boiler coal saver of spraying ammine grid | |
| CN213348376U (en) | High-efficient SNCR deNOx systems of biomass boiler | |
| CN110115916A (en) | The tapping equipment and technique of gas boiler flue gas | |
| CN202983514U (en) | Integrated SCR-SNCR (silicon controlled rectifier-selective non-catalytic reduction) combined denitration system | |
| CN205860063U (en) | Smoke eliminator and be provided with the chain-grate boiler of this device | |
| CN211936335U (en) | CFB boiler degree of depth peak regulation compound adjustable SNCR deNOx systems | |
| CN109589789A (en) | A kind of SCR denitration system and its working method of two-stage reactor parallel running | |
| CN212039849U (en) | Pellet flue gas denitration treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |