CN206215015U - Sncr denitration system - Google Patents
Sncr denitration system Download PDFInfo
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- CN206215015U CN206215015U CN201621261657.4U CN201621261657U CN206215015U CN 206215015 U CN206215015 U CN 206215015U CN 201621261657 U CN201621261657 U CN 201621261657U CN 206215015 U CN206215015 U CN 206215015U
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- reducing agent
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- supply line
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Abstract
The utility model provides a kind of SNCR denitration system.The SNCR denitration system includes denitration reaction device, reducing agent supply line and evaporator, and reducing agent import is provided with denitration reaction device；Reducing agent supply line is connected with reducing agent import；Evaporator is arranged on reducing agent supply line.In above-mentioned SNCR denitration system, evaporator is provided with reducing agent supply line, the reducing agent of liquid can be evaporated to form gaseous state using evaporator.Reducing agent is sprayed into a gaseous form, because volume is increased dramatically, can improve the mixed effect of reducing agent and flue gas, while the time of contact of reducing agent and flue gas can also be extended, is conducive to improving the denitration efficiency to flue gas.Additionally, reducing agent is sprayed into a gaseous form, also solve flue dust and liquid reducing agent and the unstable problem of denitration efficiency easily is caused to spray gun abrasion.In a word, using above-mentioned SNCR denitration system, the denitration efficiency of flue gas can be greatly improved, and maintains the stability of denitration.
Description
Technical field
The utility model is related to SNCR denitration technical field, in particular to a kind of SNCR denitration system.
Background technology
The industrial production nitrogen oxide emission of the industries such as China's coal fired power generation, steel, cement is huge, oneself turn into be only second to
The atmosphere pollution of sulfur dioxide, acid rain problem, air quality problems, atmosphere ozone layer destroying are increasingly protruded.It is Chinese at present
Turn into the big Acid Rain Zone in third place in the world after Europe and North America, so as to the sustainable development to China's economy causes serious ring
Border pressure.
SNCR is a kind of NOx control technologies of mature.Existing SNCR denitration technology, i.e. SNCR
(Selective Non-Catalytic Reduction, hereinafter abbreviated as SNCR) technology, is a kind of without catalyst, 850
Within the temperature range of~1100 DEG C, amino reductive (such as ammoniacal liquor, urea liquid etc.) is atomized into using the spray gun of specific pattern
Drop is injected directly into burner hearth or cyclone separator, and the NOx in flue gas is reduced the cleaning denitration skill of removing, generation nitrogen and water
Art.
However, liquid reducing agent is entered in burner hearth or cyclone separator by the way of lance ejection, in the process,
Denitration efficiency is easily influenceed by spray gun atomizing effect.Meanwhile, the abrasion of reducing agent and flue dust to spray gun will also result in spray gun mist
Change effect reduction and then influence denitration efficiency.
For these reasons, it is necessary to which a kind of denitration efficiency stabilization and out of stock efficiency SNCR denitration system higher are provided.
Utility model content
Main purpose of the present utility model is to provide a kind of SNCR denitration system, with solve in the prior art by liquid also
Former agent when denitrating flue gas are participated in by the way of lance ejection, the problem that out of stock efficiency is unstable, denitration efficiency is relatively low for existing.
To achieve these goals, the utility model provides a kind of SNCR denitration system, and it includes：Denitration reaction is filled
Put, reducing agent import is provided with denitration reaction device；Reducing agent supply line, reducing agent supply line and reducing agent import phase
Even；And evaporator, evaporator is arranged on reducing agent supply line.
Further, offgas outlet is additionally provided with denitration reaction device, SNCR denitration system also includes：Back-end ductwork,
Back-end ductwork is connected with offgas outlet.
Further, evaporator is arranged in back-end ductwork.
Further, SNCR denitration system also includes：Reducing agent storage tank, reducing agent storage tank and reducing agent supply line phase
Even.
Further, SNCR denitration system also includes：Measuring pump, measuring pump is arranged on reducing agent supply line, and meter
Amount pump is located between reducing agent storage tank and evaporator.
Further, denitration reaction device is boiler or cyclone separator.
Further, reducing agent import is multiple, and multiple reducing agent imports are connected with reducing agent supply line.
Further, multiple reducing agent imports are from top to bottom arranged on the sidepiece of denitration reaction device.
Using the technical solution of the utility model, there is provided a kind of SNCR denitration system, it includes denitration reaction device, also
Former agent supply line and evaporator, wherein, reducing agent import is provided with denitration reaction device；Reducing agent supply line with also
Former agent import is connected；Evaporator is arranged on reducing agent supply line.
The above-mentioned SNCR denitration system that the utility model is provided, using reducing agent supply line to being carried in denitration reaction device
For reducing agent, make its with denitration reaction device in smoke contacts and carry out denitration reaction.And, above-mentioned SNCR denitration system
In, evaporator being provided with reducing agent supply line, the reducing agent of liquid can be evaporated to form gaseous state using evaporator.Also
Former agent is sprayed into a gaseous form, because volume is increased dramatically, the mixed effect of reducing agent and flue gas can be improved, while can also
Enough extend the time of contact of reducing agent and flue gas, reason of both the above is conducive to improving the denitration efficiency to flue gas.This
Outward, reducing agent is sprayed into a gaseous form, also efficiently solves original SNCR denitration system flue dust and liquid reducing agent easily to spray
Rifle abrasion causes the unstable problem of denitration efficiency indirectly.In a word, the above-mentioned SNCR denitration system for being provided using the utility model,
The denitration efficiency of flue gas can be greatly improved, and maintains the stability of denitration efficiency.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing being further understood to of the present utility model, this practicality
New schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In the accompanying drawings：
Fig. 1 shows the SNCR denitration system schematic diagram according to a kind of embodiment of the present utility model.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, denitration reaction device；101st, reducing agent import；102nd, offgas outlet；20th, reducing agent supply line；30th, evaporate
Device；40th, back-end ductwork；50th, reducing agent storage tank；60th, measuring pump.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The application is described in further detail below in conjunction with specific embodiment, these embodiments are it is not intended that limit this
Apply for scope required for protection.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.The description only actually at least one exemplary embodiment is illustrative below, never as to this practicality
New and its application or any limitation for using.Based on the embodiment in the utility model, those of ordinary skill in the art are not having
There is the every other embodiment made and being obtained under the premise of creative work, belong to the scope of the utility model protection.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step for otherwise illustrating in these embodiments
Scope of the present utility model is not limited up to formula and numerical value.Simultaneously, it should be appreciated that each shown in accompanying drawing for the ease of description
The size of individual part is not to be drawn according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as awarding
Weigh a part for specification.In all examples shown here and discussion, any occurrence should be construed as merely example
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：It is similar
Label and letter similar terms is represented in following accompanying drawing, therefore, once be defined in a certain Xiang Yi accompanying drawing, then with
It need not be further discussed in accompanying drawing afterwards.
In description of the present utility model, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " laterally,
Vertically, vertically, level " and the indicated orientation such as " top, bottom " or position relationship be normally based on orientation shown in the drawings or position
Relation is put, description the utility model is for only for ease of and is simplified description, in the case where opposite explanation is not made, these nouns of locality
Do not indicate that and imply that the device or element of meaning there must be specific orientation or with specific azimuth configuration and operation, because
This is it is not intended that limitation to the utility model protection domain；The noun of locality " inside and outside " refers to the wheel relative to each part in itself
Wide is inside and outside.
For the ease of description, space relative terms can be used herein, such as " ... on ", " ... sidepiece ",
" in ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation levied.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.If for example, the device in accompanying drawing is squeezed, be described as " in other devices
To be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
As described by the utility model background section, liquid reducing agent is used into lance ejection in the prior art
Mode enter in burner hearth or cyclone separator, in the process, denitration efficiency is easily influenceed by spray gun atomizing effect.Together
When, the abrasion of reducing agent and flue dust on spray gun will also result in the reduction of spray gun atomizing effect and then influence denitration efficiency.In a word, by liquid
State reducing agent has that out of stock efficiency is unstable, denitration efficiency is relatively low asks when denitrating flue gas are participated in by the way of lance ejection
Topic.
In order to solve this problem, the utility model provides a kind of SNCR denitration system, as shown in figure 1, its denitration is anti-
Device 10, reducing agent supply line 20 and evaporator 30 are answered, reducing agent import 101 is provided with denitration reaction device 10；Also
Former agent supply line 20 is connected with reducing agent import 101；Evaporator 30 is arranged on reducing agent supply line 20.
The above-mentioned SNCR denitration system that the utility model is provided, using reducing agent supply line 20 to denitration reaction device 10
Middle offer reducing agent, makes it with smoke contacts and carries out denitration reaction.And, in above-mentioned SNCR denitration system, supplied in reducing agent
Answer and evaporator 30 is provided with pipeline 20, the reducing agent of liquid can be evaporated to form gaseous state using evaporator 30.Reducing agent with
Gaseous form is sprayed into, and because volume is increased dramatically, the mixed effect of reducing agent and flue gas can be improved, while can also extend
The time of contact of reducing agent and flue gas, reason of both the above is conducive to improving the denitration efficiency to flue gas.Additionally, reduction
Agent is sprayed into a gaseous form, also efficiently solves original SNCR denitration system flue dust and liquid reducing agent easily between spray gun abrasion
Connect the problem for causing denitration efficiency unstable.In a word, the above-mentioned SNCR denitration system for being provided using the utility model, can be significantly
The denitration efficiency of flue gas is improved, and maintains the stability of denitration efficiency.
The above-mentioned SNCR denitration system that the utility model is provided, as long as setting evaporator on reducing agent supply line 20
30, it becomes possible to be that reducing agent enters denitration reaction device 10 in gaseous state, so as to effectively improve the denitration efficiency of flue gas, and have it
There is stability higher.In a kind of preferred embodiment, as shown in figure 1, be additionally provided with tail gas on denitration reaction device 10 going out
Mouth 102, SNCR denitration system also includes：Back-end ductwork 40, back-end ductwork 40 is connected with offgas outlet 102.Using offgas outlet
102, the tail gas after denitration reaction can be introduced back-end ductwork 40, so as to discharge air or enter follow-up treatment process.
In a kind of preferred embodiment, as shown in figure 1, evaporator 30 is arranged in back-end ductwork 40.It is anti-by denitration
Ying Hou, the offgas outlet 102 of denitration reaction device 10 understands discharge temperature treatment tail gas higher, and evaporator 30 is arranged on into afterbody
In flue 40, then evaporator 30 can be heated using these high-temperature tail gas, gaseous state is converted into provide liquid reducing agent
Heat needed for reducing agent, effective use of energy sources, reducing energy consumption saves processing cost.
In a kind of preferred embodiment, as shown in figure 1, SNCR denitration system also includes：Reducing agent storage tank 50, reducing agent
Storage tank 50 is connected with reducing agent supply line 20.Reducing agent storage tank 50 is set, can be reducing agent supply line 20, denitration reaction
Device 10 stably provides reducing agent.Specifically, what is supplied in reducing agent storage tank 50 can be any reduction commonly used in the art
Agent solution, such as ammoniacal liquor, urea liquid etc..Preferably, what is supplied in reducing agent storage tank 50 is ammoniacal liquor, ammoniacal liquor have in itself compared with
Good volatile performance, when being heated to it using evaporator 30, gasification efficiency is higher, so as to be conducive to further reducing energy
Consumption, saves processing cost.
In a kind of preferred embodiment, as shown in figure 1, SNCR denitration system also includes：Measuring pump 60, measuring pump 60 sets
Put on reducing agent supply line 20, and measuring pump 60 is located between reducing agent storage tank 50 and evaporator 30.Measuring pump 60 is set,
The flow of reducing agent can be conveniently controlled, is adjusted with reference to the processing speed of flue gas.
In a kind of preferred embodiment, as shown in figure 1, denitration reaction device 10 is boiler or cyclone separator.
In a kind of preferred embodiment, as shown in figure 1, reducing agent import 101 is multiple, multiple reducing agent imports 101
It is connected with reducing agent supply line 20.Multiple reducing agents import 101 is set.Gaseous reducing agent can be made more abundant with flue gas
Ground contact, so as to further improve the denitration efficiency of flue gas.Such as, reducing agent import 101 can be two, even more many.More
Preferably, multiple nozzles are provided with each reducing agent import 101, it is gaseous also using the super different directions spraying of multiple nozzles
Former agent, so can further improve the penetrating homogeneity of reducing agent, make its more fully with smoke contacts.
In a kind of preferred embodiment, as shown in figure 1, multiple reducing agent import 101 to be from top to bottom arranged on denitration anti-
Answer the sidepiece of device 10.Multiple reducing agent imports 101 are from top to bottom set, is conducive to making gaseous reducing agent more equably enter
Enter denitration reaction device 10, so as to more fully be contacted with flue gas, further to improve the denitration efficiency of flue gas.
Certainly, multiple reducing agent imports 101 can also be such as, not shown in the utility model by other arrangement modes
A kind of implementation method in, multiple reducing agent imports 101 along denitration reaction device 10 axially spaced-apart set, and it is two neighboring also
The distance between former agent import 101 is equal.
Furthermore it is preferred that be provided with spray gun at the reducing agent import 101 of above-mentioned denitration reaction device 10, the spray gun and reducing agent
Supply line 20.
As can be seen from the above description, the utility model the above embodiments realize following technique effect：
The above-mentioned SNCR denitration system that the utility model is provided, using reducing agent supply line 20 to denitration reaction device 10
Middle offer reducing agent, makes it with smoke contacts and carries out denitration reaction.And, in above-mentioned SNCR denitration system, supplied in reducing agent
Answer and evaporator 30 is provided with pipeline 20, the reducing agent of liquid can be evaporated to form gaseous state using evaporator 30.Reducing agent with
Gaseous form is sprayed into, and because volume is increased dramatically, the mixed effect of reducing agent and flue gas can be improved, while can also extend
The time of contact of reducing agent and flue gas, reason of both the above is conducive to improving the denitration efficiency to flue gas.Additionally, reduction
Agent is sprayed into a gaseous form, also efficiently solves original SNCR denitration system flue dust and liquid reducing agent easily between spray gun abrasion
Connect the problem for causing denitration efficiency unstable.In a word, the above-mentioned SNCR denitration system for being provided using the utility model, can be significantly
The denitration efficiency of flue gas is improved, and maintains the stability of denitration efficiency.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (8)
1. a kind of SNCR denitration system, it is characterised in that including：
Denitration reaction device (10), reducing agent import (101) is provided with the denitration reaction device (10)；
Reducing agent supply line (20), the reducing agent supply line (20) is connected with the reducing agent import (101)；Evaporator
(30), the evaporator (30) is arranged on the reducing agent supply line (20).
2. SNCR denitration system according to claim 1, it is characterised in that also set up on the denitration reaction device (10)
There is offgas outlet (102), the SNCR denitration system also includes：Back-end ductwork (40), the back-end ductwork (40) and the tail
Gas outlet (102) is connected.
3. SNCR denitration system according to claim 2, it is characterised in that the evaporator (30) is arranged on the afterbody
In flue (40).
4. SNCR denitration system according to any one of claim 1 to 3, it is characterised in that the SNCR denitration system
Also include：Reducing agent storage tank (50), the reducing agent storage tank (50) is connected with the reducing agent supply line (20).
5. SNCR denitration system according to claim 4, it is characterised in that the SNCR denitration system also includes：Metering
Pump (60), the measuring pump (60) is arranged on the reducing agent supply line (20), and the measuring pump (60) is positioned at described
Between reducing agent storage tank (50) and the evaporator (30).
6. SNCR denitration system according to any one of claim 1 to 3, it is characterised in that the denitration reaction device
(10) it is boiler or cyclone separator.
7. SNCR denitration system according to any one of claim 1 to 3, it is characterised in that the reducing agent import
(101) it is multiple, multiple reducing agent imports (101) are connected with the reducing agent supply line (20).
8. SNCR denitration system according to claim 7, it is characterised in that multiple reducing agent imports (101) are by upper
The sidepiece of the denitration reaction device (10) is arranged under.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621261657.4U CN206215015U (en) | 2016-11-23 | 2016-11-23 | Sncr denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621261657.4U CN206215015U (en) | 2016-11-23 | 2016-11-23 | Sncr denitration system |
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| Publication Number | Publication Date |
|---|---|
| CN206215015U true CN206215015U (en) | 2017-06-06 |
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ID=58791289
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621261657.4U Active CN206215015U (en) | 2016-11-23 | 2016-11-23 | Sncr denitration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107789984A (en) * | 2017-10-30 | 2018-03-13 | 清华大学 | The denitrating system and method for a kind of gas turbine |
-
2016
- 2016-11-23 CN CN201621261657.4U patent/CN206215015U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107789984A (en) * | 2017-10-30 | 2018-03-13 | 清华大学 | The denitrating system and method for a kind of gas turbine |
| CN107789984B (en) * | 2017-10-30 | 2019-09-20 | 清华大学 | A kind of denitrating system and method for gas turbine |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181218 Address after: 252000 No. 8 Mudanjiang Road, Liaocheng Economic Development Zone, Shandong Province Patentee after: CRYSTAL WATER AND BLUE SKY ENVIRONMENTAL ENGINEERING CO., LTD. Address before: 252000 Mudanjiang Road, Liaocheng Economic Development Zone, Shandong 8 Patentee before: CRYSTAL WATER AND BLUE SKY ENVIRONMENTAL PROTECTION GROUP CO., LTD. |