CN205867981U - SNCR denitrification facility - Google Patents
SNCR denitrification facility Download PDFInfo
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- CN205867981U CN205867981U CN201620857182.9U CN201620857182U CN205867981U CN 205867981 U CN205867981 U CN 205867981U CN 201620857182 U CN201620857182 U CN 201620857182U CN 205867981 U CN205867981 U CN 205867981U
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- reducing agent
- storehouse
- sncr
- heat
- denitration device
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Abstract
The utility model discloses a SNCR denitrification facility, its technical scheme main points are including furnace and reductant bin, furnace includes the SNCR inlet zone of top and the combustion area that is located the below, the spray gun of being connected with the reductant bin is installed to the SNCR inlet zone, be connected with the heat exchange core between reductant bin and the spray gun, the furnace top is connected with the guide drainage tube that the flue gas passed the heat exchange core and carried out the heat exchange with the reductant after the denitration, the effect of environmental protection and energy saving has been reached.
Description
Technical field
This utility model relates to a kind of denitrating flue gas processing technology field, particularly to a kind of SNCR denitration device.
Background technology
Present stage, the main denitration technology of industrial boilers in China can be divided into two big classes, and one is burning optimization nitrogen oxides control
Technology processed；Two is gas denitrifying technology.The size of Industrial Boiler is smaller, mixed phase to being easier, the burner hearth of Industrial Boiler
Temperature is just in the Process window of SNCR, it is not necessary to big transformation space, can be by realizing the transformation of boiler, simultaneously
SNCR technology is relatively low due to cost, is the most more suitable for the NOX removing of existing Industrial Boiler.
SNCR technology, i.e. SNCR technology, be in 850 ~ 1150 DEG C of these temperature ranges of burner hearth, in nothing
Spraying into inside burner hearth by the amino such as NH3 or carbamide under the effect of catalyst, reducing agent optionally reduces in flue gas
NOX, its optimal reaction temperature is 900～1100 DEG C.Denitration efficiency can be controlled between 30 ~ 80%, is to apply more cigarette at present
One of gas denitration technology.NH3 is used to be mainly as reducing agent, the chemical equation of reduction NOX:
4NH3+4NO+O2→4N2+6H2O
4NH3+2NO+2O2→3N2+6H2O
8NH3+6NO→7N2+12H2O
And use carbamide as reducing agent reduction NOx main chemical reactions be:
(NH2)2CO→2NH2+CO
NH2+NO→N2+H2O
CO+NO→N2+CO2。
Existing SNCR denitration device, for improving the efficiency of denitration, is optimized technology before, and first room temperature is in advance
The reducing agents such as atomized ammonia solution or urea liquid, gasification of then heating；Final boost sprays into flue gas and produces the denitration reaction in source
In district so that it is be sufficiently mixed and haptoreaction with flue gas.Wherein, denitration reaction temperature is 800 ~ 950 DEG C.High-temperature gasification uses single
The mode that section or segmentation heat, when the mode using segmentation progressively to heat gasifies, temperature is more uniformly distributed stable.
But use extra heating system that reducing agent is heated, waste resource, improve production cost, also wave
Take resource.
Utility model content
The purpose of this utility model is to provide the SNCR denitration device of a kind of environmental protection and energy saving.
Above-mentioned technical purpose of the present utility model has the technical scheme that
A kind of SNCR denitration device, including burner hearth and reducing agent storage bin, burner hearth includes SNCR inlet zone and the position of top
In the combustion zone of lower section, SNCR inlet zone is provided with the spray gun being connected with reducing agent storage bin, reducing agent storage bin and spray gun it
Between connect and have a heat exchanging core, burner hearth top connect have guiding denitration after flue gas through heat exchanging core and carry out heat with reducing agent
The drainage tube of exchange.
By using such scheme, flue gas is guided by the flue gas entering drainage tube from burner hearth top with high temperature, drainage tube
Enter in heat exchanging core；In heat exchanging core, the flue gas of high temperature and the reducing agent of low temperature carry out conduction of heat, so make also
Former dose of high-temperature gasification, flue gas then lowers the temperature, and the energy so taken away flue gas recycles, and the heat reducing boiler dissipates
Lose, reached the effect of energy-saving and emission-reduction.
It is also preferred that the left heat exchanging core includes the laminate that some stackings connect, laminate has multiple duct and adjacent laminate
Duct square crossing is arranged, and duct is divided into into the recuperation of heat passage passed through for reducing agent and the heat dissipation channel passed through for flue gas.
By using such scheme, utilize recuperation of heat passage and the heat dissipation channel of interlaced setting, increase recuperation of heat
Passage and the contact area of heat dissipation channel, improve the efficiency of conduction of heat, reduces thermal loss, further up to energy-conservation effect
Really.
It is also preferred that the left recuperation of heat passage is vertically arranged and lower end is connected with reducing agent storage bin, heat dissipation channel is horizontally disposed with.
By using such scheme, reducing agent enters from bottom to up and carries out heat exchange in recuperation of heat passage, it is ensured that reducing agent
Time enough is stopped, so that reducing agent contacts fully with high-temperature flue gas, it is ensured that conduction of heat in heat exchanging core
Effect.
It is also preferred that the left laminate includes central layer and is fixed in the panel of central layer both sides, central layer cross section becomes wavy, position, duct
Between central layer and adjacent panel.
By using such scheme, the space between panel is separated into multiple duct by wavy central layer, the most adjacent
Recuperation of heat passage and heat dissipation channel only have panel to be separated, it is ensured that while effectively carrying out heat exchange, after denitration
Flue gas will not contact with each other with reducing agent, thus ensure that the purity of reducing agent, and then ensure that reducing agent and flue gas in burner hearth
Fully reaction.
It is also preferred that the left the outer sheathed ventilation storehouse of heat exchanging core, ventilation storehouse is connected with dividing plate in heat exchanging core surrounding and separates
Become spraying of being connected with spray gun storehouse is connected with reducing agent storage bin prepares the heat accumulation storehouse that is connected with drainage tube, storehouse and with outward
The discharge storehouse that boundary connects.
By using such scheme, utilize and be divided into tetrameric ventilation storehouse by dividing plate, make drainage tube one pipe dissipate with multiple
Heat pipe connects, gas uniform distribution in heat exchanging core.
It is also preferred that the left heat exchanging core quantity is multiple and is successively set on drainage tube.
By using such scheme, by multiple heat exchanging cores, reducing agent is progressively heated up, the ammonia being i.e. atomized
Aqueous solution or urea liquid first carry out heat exchange with the middle temperature flue gas discharged, and the high-temperature flue gas with discharge carries out heat friendship the most again
Changing, the mode using segmentation progressively to heat gasifies, and the reducing agent temperature heated can be made more uniform, it is ensured that burner hearth
Interior flue gas fully reacts with reducing agent.
It is also preferred that the left spray gun is provided with multiple and is distributed in layer by layer in combustion zone.
By using such scheme, utilize the spray gun arranged layer by layer that flue gas is carried out jet, it is ensured that flue gas enters with reducing agent
Row contacts fully, so that the complete denitration of flue gas.
It is also preferred that the left be connected automatic regulating valve between injection storehouse and spray gun.
By using such scheme, different according to flue gas concentration in operating power size in burner hearth, i.e. burner hearth, it is automatically adjusted
The flow of valve regulation ejecting gun, thus ensure that reducing machine fully reacts with flue gas, prevent from too much causing because of reducing agent waste or because of
Reducing agent is very few and causes denitrating flue gas incomplete.
It is also preferred that the left the affixed promising spray gun in ventilation storehouse provides the air compressor of pressure.
By using such scheme, the air compressor reducing agent to having gasified is utilized to carry out supercharging and be uniformly ejected into
In SNCR inlet zone, thus ensure that denitration reaction is uniformly carried out.
It is also preferred that the left burner hearth top board is connected with pendant superheater.
By using such scheme, pendant superheater will enter the flue gas of heat exchanging core and carry out preliminary heat exchange, reduce
The temperature of high-temperature flue gas, while making flue-gas temperature be suitable to gasify reducing agent, will not remain too high heat and cause work
The waste of industry boiler energy.
In sum, this utility model has the advantages that and utilizes the flue gas generation heat ammonia to being atomized molten
Liquid or urea liquid carry out high-temperature gasification, it is achieved environment protection energy-saving efficient；Gasification modeization uses the mode that single hop or segmentation heat
, the ammonia spirit being atomized or urea liquid first carry out heat exchange with the middle temperature flue gas discharged, the most again with the height discharged
Temperature flue gas carries out heat exchange, and the temperature that can make the ammonia heated is more uniform.
Accompanying drawing explanation
Fig. 1 is SNCR denitration device connection diagram in embodiment 1；
Fig. 2 is heat exchanging core structural representation；
Fig. 3 is SNCR denitration device connection diagram in embodiment 2.
In figure, 1, burner hearth；11, SNCR inlet zone；111, spray gun；12, combustion zone；2, reducing agent storage bin；3, heat exchange
Core body；31, laminate；311, central layer；312, panel；314, recuperation of heat passage；315, heat dissipation channel；4, drainage tube；5, ventilation storehouse；
51, dividing plate；52, injection storehouse；521, air compressor；53, preparation storehouse；54, heat accumulation storehouse；55, storehouse is discharged；6, pendant superheater；
7, automatic regulating valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.The most identical parts are with identical accompanying drawing
Labelling represents.It should be noted that the word "front", "rear" used in describing below, "left", "right", "up" and "down" refer to
Being the direction in accompanying drawing, word " bottom surface " and " end face ", " interior " and " outward " refer respectively to towards or away from particular elements geometry
The direction at center.
Embodiment 1: as depicted in figs. 1 and 2, a kind of SNCR denitration device, including the burner hearth 1 being rectangle, burner hearth 1 includes
The SNCR inlet zone 11 of top and the combustion zone 12 being positioned at lower section；In the combustion zone 12 of lower section, burner hearth 1 burning coal etc. produces
Amount of heat also produces flue gas；And in SNCR inlet zone 11 up, burner hearth 1 is provided with multilamellar spray gun 111；At every layer
In, spray gun 111 is radially even to be distributed in burner hearth 1, the reducing agent that reducing agent room temperature is atomized and will gasify in advance by spray gun 111
Uniformly being injected in SNCR inlet zone 11, reducing agent reacts with the NOX in flue gas, thus the flue gas passed through carries out denitration, and
And on each spray gun 111, it is respectively connected with automatic regulating valve 7, the flow of regulation injection.
The high-temperature gasification of reducing agent is carried out in the ventilation storehouse 5 becoming cuboid, is welded with into rectangular in ventilation center, storehouse 5
The heat exchanging core 3 of body shape, heat exchanging core 3 is formed by some laminates 31 stacking, and laminate 31 includes central layer 311 and panel 312,
Central layer 311 cross section becomes wavy and panel 312 cross section rectangularity, and panel 312 is positioned at central layer 311 both sides solid with central layer 311
Connect, thus the space between panel 312 is separated into multiple not connected duct, the panel 312 of adjacent laminate 31 by central layer 311
One piece of panel 312 can be shared, and the central layer 311 of adjacent laminate 31 is arranged in a crossed manner, makes the duct stroke directions phase of adjacent laminate 31
The most vertical, thus duct is divided into the recuperation of heat passage 314 passed through for reducing agent and the heat dissipation channel 315 passed through for high-temperature gas,
And recuperation of heat passage 314 is vertically arranged and heat dissipation channel 315 is horizontally disposed with.
Ventilation storehouse 5 is provided with four dividing plates 51 in heat exchanging core 3 surrounding, and dividing plate 51 one end is welded on the one of ventilation storehouse 5
On the long limit of bar, and the other end is welded on the adjacent long limit of heat exchanging core 3, and heat exchanging core 3 width with ventilation storehouse 5 in
Chamber width is equal and is welded to each other, thus storehouse 5 inner chamber of taking a breath is divided into four not the most mutually by heat exchanging core 3 and dividing plate 51
The bin of connection, but non-conterminous bin passing hole channel is interconnected.The gas-tight silo of bottom is preparation storehouse 53,53 times, preparation storehouse
Side wall surface is connected with reducing agent storage bin 2 by pipeline；Accordingly, the gas-tight silo of the top is injection storehouse 52, and injection storehouse 52 leads to
Cross air compressor 521 to be connected with spray gun 111；The gas-tight silo in left side is heat accumulation storehouse 54, and heat accumulation storehouse 54 is by drainage tube 4 and burner hearth
The top of 1 connects, thus after utilizing denitration, the preheating of flue gas makes reducing agent heat；And the gas-tight silo on right side is for discharging storehouse 55, will
Complete the flue gas discharge Industrial Boiler of denitration and cooling, carry out follow-up sulfuration, dedusting etc. and process.
Burner hearth 1 top board is also equipped with pendant superheater 6, and then carries out the flue gas entering sluice way lowering the temperature for the first time, enters
One step prevents the energy to run off.
Utilize flue gas to take the heat ammonia spirit to being atomized out of or urea liquid carries out high-temperature gasification, it is achieved environmental protection and energy saving
Efficiently.
Embodiment 2: as it is shown on figure 3, be with implementing 1 difference, ventilation storehouse 5 quantity of band heat exchanging core 3 is two
Individual and be successively set on drainage tube 4, adjacent ventilation storehouse 5 is also equipped with radiator.
The mode that segmentation heats, the ammonia spirit being atomized or the urea liquid middle temperature flue gas first with discharge is used to carry out heat
Exchange, the high-temperature flue gas with discharge carries out heat exchange the most again, and the temperature that can make the ammonia heated is more uniform.
This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model
The present embodiment can be made after reading this specification by field technique personnel as required does not has the amendment of creative contribution, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (10)
1. a SNCR denitration device, including burner hearth (1) and reducing agent storage bin (2), burner hearth (1) includes the SNCR injection of top
District (11) and be positioned at lower section combustion zone (12), SNCR inlet zone (11) is provided with the spray gun being connected with reducing agent storage bin (2)
(111), it is characterised in that: being connected between reducing agent storage bin (2) with spray gun (111) and have heat exchanging core (3), burner hearth (1) pushes up
End connection has and guides flue gas after denitration through heat exchanging core (3) thus to carry out the drainage tube (4) of heat exchange with reducing agent.
SNCR denitration device the most according to claim 1, it is characterised in that: heat exchanging core (3) includes some stackings even
The laminate (31) connect, laminate (31) has the duct square crossing of multiple duct and adjacent laminate (31) and arranges, and duct is divided into confession
Recuperation of heat passage (314) that reducing agent passes through and the heat dissipation channel (315) passed through for flue gas.
SNCR denitration device the most according to claim 2, it is characterised in that: recuperation of heat passage (314) be vertically arranged and under
End is connected with reducing agent storage bin (2), and heat dissipation channel (315) is horizontally disposed with.
SNCR denitration device the most according to claim 2, it is characterised in that: laminate (31) includes central layer (311) and consolidates
Being connected to the panel (312) of central layer (311) both sides, central layer (311) cross section becomes wavy, and duct is positioned at central layer (311) with adjacent
Panel (312) between.
SNCR denitration device the most according to claim 4, it is characterised in that: heat exchanging core (3) the most sheathed ventilation storehouse
(5), ventilation storehouse (5) is connected with dividing plate (51) in heat exchanging core (3) surrounding, and ventilation storehouse (5) is separated into and sprays by dividing plate (51)
The storage that the preparation storehouse (53) that the injection storehouse (52) that rifle (111) connects is connected with reducing agent storage bin (2) is connected with drainage tube (4)
Hot storehouse (54) and the discharge storehouse (55) being connected with the external world.
SNCR denitration device the most according to claim 5, it is characterised in that: heat exchanging core (3) quantity is multiple and depends on
Secondary it is arranged on drainage tube (4).
SNCR denitration device the most according to claim 4, it is characterised in that: spray gun (111) is provided with multiple and divides layer by layer
Cloth is in combustion zone (12).
SNCR denitration device the most according to claim 7, it is characterised in that: connect between injection storehouse (52) and spray gun (111)
Connect automatic regulating valve (7).
SNCR denitration device the most according to claim 8, it is characterised in that: ventilation storehouse (5) affixed promising spray gun (111)
The air compressor (521) of pressure is provided.
SNCR denitration device the most according to claim 1, it is characterised in that: burner hearth (1) top board is connected with pendant superheater
(6)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620857182.9U CN205867981U (en) | 2016-08-09 | 2016-08-09 | SNCR denitrification facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620857182.9U CN205867981U (en) | 2016-08-09 | 2016-08-09 | SNCR denitrification facility |
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| Publication Number | Publication Date |
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| CN205867981U true CN205867981U (en) | 2017-01-11 |
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ID=57702778
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620857182.9U Active CN205867981U (en) | 2016-08-09 | 2016-08-09 | SNCR denitrification facility |
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| CN (1) | CN205867981U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110801728A (en) * | 2019-10-18 | 2020-02-18 | 苏州巨鼎环保科技有限公司 | SNCR denitration reaction tower device and system |
| CN112240560A (en) * | 2019-07-30 | 2021-01-19 | 青岛诺瑞尔节能环保科技有限公司 | Energy-saving SNCR (selective non-catalytic reduction) denitration device and denitration method |
-
2016
- 2016-08-09 CN CN201620857182.9U patent/CN205867981U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240560A (en) * | 2019-07-30 | 2021-01-19 | 青岛诺瑞尔节能环保科技有限公司 | Energy-saving SNCR (selective non-catalytic reduction) denitration device and denitration method |
| CN110801728A (en) * | 2019-10-18 | 2020-02-18 | 苏州巨鼎环保科技有限公司 | SNCR denitration reaction tower device and system |
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