CN209612640U - A kind of denitrating system of multi-stage reacting device - Google Patents
A kind of denitrating system of multi-stage reacting device Download PDFInfo
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- CN209612640U CN209612640U CN201822264319.1U CN201822264319U CN209612640U CN 209612640 U CN209612640 U CN 209612640U CN 201822264319 U CN201822264319 U CN 201822264319U CN 209612640 U CN209612640 U CN 209612640U
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Abstract
The utility model relates to a kind of denitrating systems of multi-stage reacting device, 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.Tthe utility model 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 utility model relates to a kind of denitrating systems of multi-stage reacting device, belong to industrial waste gas purifying environmental protection and energy neck
Domain.
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.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide it is a kind of design rationally,
High efficient and reliable meets coal-fired plant flue gas NOxHigh denitration efficiency required by the even lower discharge of minimum discharge and underload fortune
The denitrating system of capable multi-stage reacting device.
The technical scheme in the invention for solving the above technical problem is: a kind of denitrating system of multi-stage reacting device,
It is characterized by comprising boiler, economizer, economizer hopper, one baffle door regulating device, level-ones to spray ammonia mixing arrangement, two
Grade baffle door regulating device, second level spray ammonia mixing arrangement, reductant supply system, level-one Benitration reactor, second level denitration reaction
Device, air preheater, dust-extraction unit, desulfurizer, three-level baffle door regulating device, level Four baffle door regulating device, plasma are de-
Nitre device and chimney；The boiler is connected to economizer, and the lower section of economizer, the economizer point is arranged in economizer hopper
It is not connected to level-one Benitration reactor, second level Benitration reactor, and level-one is set between economizer and level-one Benitration reactor
Baffle door regulating device and level-one spray ammonia mixing arrangement, and second level baffle door tune is arranged between economizer and second level Benitration reactor
Regulating device and second level spray ammonia mixing arrangement, and the reductant supply system is mixed with level-one spray ammonia mixing arrangement, second level spray ammonia respectively
It attaches together and sets connection, the level-one Benitration reactor and second level Benitration reactor are connected to air preheater, and air preheater, dust-extraction unit
It is sequentially communicated with desulfurizer, the desulfurizer is directly connect with chimney all the way, and the setting of level Four baffle door regulating device exists
Between the outlet of desulfurizer and the entrance of chimney, the desulfurizer another way is connected by plasma denitrification apparatus and chimney
It is logical, 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 described in the utility model are parallel arrangement.
One baffle door regulating device described in the utility model be arranged in level-one spray ammonia mixing arrangement entrance, described two
The entrance of second level spray ammonia mixing arrangement is arranged in grade baffle door regulating device.
The entrance of level-one Benitration reactor, the second level spray is arranged in level-one spray ammonia mixing arrangement described in the utility model
The entrance of second level Benitration reactor is arranged in ammonia mixing arrangement.
The size of level-one Benitration reactor described in the utility model is designed by 100% design exhaust gas volumn, and the second level is de-
The size of nitre reactor is 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 is opened, second level baffle door regulating device is closed, three-level baffle door regulating device is closed
Close and level Four baffle door regulating device open when, flue gas by one baffle door regulating device enter level-one spray ammonia mixing arrangement,
The ammonia sprayed in flue with level-one spray ammonia mixing arrangement enters level-one Benitration reactor after mixing, after denitration reaction
Flue gas enter air preheater, then be successively discharged into chimney after dust-extraction unit, desulfurizer and level Four baffle door regulating device；
When one baffle door regulating device is opened, second level baffle door regulating device is closed, three-level baffle door regulating device is opened
Open and level Four baffle door regulating device close when, flue gas by one baffle door regulating device enter level-one spray ammonia mixing arrangement,
The ammonia sprayed in flue with level-one spray ammonia mixing arrangement enters level-one Benitration reactor after mixing, after denitration reaction
Flue gas enter air preheater, then successively pass through dust-extraction unit, desulfurizer, three-level baffle door regulating device and plasma denitration
Chimney is discharged into after device；
When one baffle door regulating device is closed, second level baffle door regulating device is opened, three-level baffle door regulating device is closed
Close and level Four baffle door regulating device open when, flue gas by second level baffle door regulating device enter second level spray ammonia mixing arrangement,
The ammonia sprayed in flue with second level spray ammonia mixing arrangement enters second level Benitration reactor after mixing, after denitration reaction
Flue gas enter air preheater, then be successively discharged into chimney after dust-extraction unit, desulfurizer and level Four baffle door regulating device；
When one baffle door regulating device is closed, second level baffle door regulating device is opened, three-level baffle door regulating device is opened
Open and level Four baffle door regulating device close when, flue gas by second level baffle door regulating device enter second level spray ammonia mixing arrangement,
The ammonia sprayed in flue with second level spray ammonia mixing arrangement enters second level Benitration reactor after mixing, after denitration reaction
Flue gas enter air preheater, then successively pass through dust-extraction unit, desulfurizer, three-level baffle door regulating device and plasma denitration
Chimney is discharged into after device；
When one baffle door regulating device is opened, second level baffle door regulating device is opened, three-level baffle door regulating device is closed
Close and level Four baffle door regulating device open when, part of smoke by one baffle door regulating device enter level-one spray ammonia mixing
Device, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement enter level-one Benitration reactor, another part after mixing
Flue 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
Ammonia mixing after enter second level Benitration reactor, the flue gas after denitration reaction enters air preheater, then successively by removing
Chimney is discharged into after dirt device, desulfurizer and level Four baffle door regulating device；
When one baffle door regulating device is opened, second level baffle door regulating device is opened, three-level baffle door regulating device is opened
Open and level Four baffle door regulating device close when, part of smoke by one baffle door regulating device enter level-one spray ammonia mixing
Device, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement enter level-one Benitration reactor, another part after mixing
Flue 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
Ammonia mixing after enter second level Benitration reactor, the flue gas after denitration reaction enters air preheater, then successively by removing
Chimney is discharged into after dirt 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 utility model passes through monitoring unit load, economizer exit exhaust gas volumn, flue-gas temperature, NOxConcentration, and it is empty pre-
Device entrance NOxConcentration, ammonia slip concentration and desulfurizer export NOxConcentration controls one baffle door regulating device, second level baffle
Door regulating device, the aperture of three-level baffle door regulating device and level Four baffle door regulating device, adjust and contain NOxFlue gas enters level-one
The ratio of Benitration reactor, second level Benitration reactor and plasma denitrification apparatus adjusts level-one spray ammonia mixing arrangement and second level
Ammonia spraying amount, the plasma denitrification apparatus electricity consumption of ammonia mixing arrangement are sprayed, level-one Benitration reactor, second level Benitration reactor are controlled
With the denitration efficiency of plasma denitrification apparatus.
It is 320-420 DEG C that level-one denitrating catalyst in level-one Benitration reactor described in the utility model, which is applicable in smoke temperature,；Institute
Stating the second level denitrating catalyst in second level Benitration reactor and being applicable in smoke temperature is 250-420 DEG C.
The entrance flue gas temperature of plasma denitrification apparatus described in the utility model is 100-140 DEG C；The plasma
The entrance NO of denitrification apparatusxThe concentration scope of application is 50-200mg/m3。
The utility model compared with prior art, has the following advantages that and effect: being pressed by two-stage Benitration reactor size
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 passed through controllable register
Door aperture, spray ammonia mixing arrangement ammonia spraying amount and plasma denitrification apparatus electricity consumption flexibly switching control can participate in denitration reaction
Benitration reactor and plasma denitrification apparatus are greatly improved existing denitration efficiency and meet coal-fired plant flue gas NOxUltralow row
It puts even lower emission request, and can be cut when unit load is low to lead to minimum lower than the denitrification apparatus spray ammonia temperature of flue-gas temperature
Second level Benitration reactor is shifted to, realizes that denitrification apparatus bringing normally into operation avoids NO by second level denitrating catalystxDischarge beyond standards.It compares
The prior art, the utility model have system flow simple, and flexible operation, strong operability, denitration efficiency is high, less energy consumption, at
This is low, and can solve and cause denitration that can not put into operation because the low smoke temperature of unit load is low in turn result in NOxThe risk problem of discharge beyond standards
The advantages that, application prospect is extensive.
Detailed description of the invention
Fig. 1 is the work structure diagram of level-one Benitration reactor in the utility model embodiment.
Fig. 2 is the work structure diagram of second level Benitration reactor in the utility model embodiment.
Fig. 3 is the overall structure diagram of the utility model embodiment.
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 utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
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
When 14 closings and the unlatching of level Four baffle door regulating device 15, flue gas, which enters level-one spray ammonia by one baffle door regulating device 4, to be mixed
It attaches together and sets 5, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement 5 enters level-one Benitration reactor 6 after mixing, and passes through
Flue gas after denitration reaction enters air preheater 11, then successively adjusts by dust-extraction unit 12, desulfurizer 13 and level Four baffle door
Chimney 17 is discharged into after device 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
When 14 unlatchings and the closing of level Four baffle door regulating device 15, flue gas, which enters level-one spray ammonia by one baffle door regulating device 4, to be mixed
It attaches together and sets 5, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement 5 enters level-one Benitration reactor 6 after mixing, and passes through
Flue gas after denitration reaction enters air preheater 11, then successively adjusts dress by dust-extraction unit 12, desulfurizer 13, three-level baffle door
Chimney 17 is discharged into after setting 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
When 14 closings and the unlatching of level Four baffle door regulating device 15, flue gas, which enters second level spray ammonia by second level baffle door regulating device 7, to be mixed
It attaches together and sets 8, the ammonia sprayed in flue with second level spray ammonia mixing arrangement 8 enters second level Benitration reactor 9 after mixing, and passes through
Flue gas after denitration reaction enters air preheater 11, then successively adjusts by dust-extraction unit 12, desulfurizer 13 and level Four baffle door
Chimney 17 is discharged into after device 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
When 14 unlatchings and the closing of level Four baffle door regulating device 15, flue gas, which enters second level spray ammonia by second level baffle door regulating device 7, to be mixed
It attaches together and sets 8, the ammonia sprayed in flue with second level spray ammonia mixing arrangement 8 enters second level Benitration reactor 9 after mixing, and passes through
Flue gas after denitration reaction enters air preheater 11, then successively adjusts dress by dust-extraction unit 12, desulfurizer 13, three-level baffle door
Chimney 17 is discharged into after setting 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
When 14 closings and the unlatching of level Four baffle door regulating device 15, part of smoke enters level-one by one baffle door regulating device 4
Ammonia mixing arrangement 5 is sprayed, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement 5 enters level-one Benitration reactor after mixing
6, another part flue gas enters second level by second level baffle door regulating device 7 and sprays ammonia mixing arrangement 8, sprays ammonia with second level in flue
Enter second level Benitration reactor 9 after the ammonia mixing that mixing arrangement 8 sprays, the flue gas after denitration reaction enters air preheater
11, then successively chimney 17 is discharged into after dust-extraction unit 12, desulfurizer 13 and level Four baffle door regulating 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
When 14 unlatchings and the closing of level Four baffle door regulating device 15, part of smoke enters level-one by one baffle door regulating device 4
Ammonia mixing arrangement 5 is sprayed, the ammonia sprayed in flue with level-one spray ammonia mixing arrangement 5 enters level-one Benitration reactor after mixing
6, another part flue gas enters second level by second level baffle door regulating device 7 and sprays ammonia mixing arrangement 8, sprays ammonia with second level in flue
Enter second level Benitration reactor 9 after the ammonia mixing that mixing arrangement 8 sprays, the flue gas after denitration reaction enters air preheater
11, then successively after dust-extraction unit 12, desulfurizer 13, three-level baffle door regulating device 14 and plasma denitrification apparatus 16
It is discharged into 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.
Although the utility model is disclosed as above with embodiment, its protection scope being not intended to limit the utility model,
Any technical staff for being familiar with this technology, it is made in the conception and scope for not departing from the utility model to change and retouch,
It all should belong to the protection range of the utility model.
Claims (5)
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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822264319.1U CN209612640U (en) | 2018-12-31 | 2018-12-31 | A kind of denitrating system of multi-stage reacting device |
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| CN201822264319.1U CN209612640U (en) | 2018-12-31 | 2018-12-31 | A kind of denitrating system of multi-stage reacting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603528A (en) * | 2018-12-31 | 2019-04-12 | 华电电力科学研究院有限公司 | A kind of denitrating system and its working method of multi-stage reacting device |
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2018
- 2018-12-31 CN CN201822264319.1U patent/CN209612640U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603528A (en) * | 2018-12-31 | 2019-04-12 | 华电电力科学研究院有限公司 | A kind of denitrating system and its working method of multi-stage reacting device |
| CN109603528B (en) * | 2018-12-31 | 2023-11-14 | 华电电力科学研究院有限公司 | Denitration system of multistage reaction device and working method thereof |
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