CN107023823A - Air pollution control processes and system - Google Patents
Air pollution control processes and system Download PDFInfo
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- CN107023823A CN107023823A CN201610073419.9A CN201610073419A CN107023823A CN 107023823 A CN107023823 A CN 107023823A CN 201610073419 A CN201610073419 A CN 201610073419A CN 107023823 A CN107023823 A CN 107023823A
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- accelerator
- flue gas
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- temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
- F23B80/02—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for returning flue gases to the combustion chamber or to the combustion zone
Abstract
The invention discloses air pollution control processes, it includes：The combustion of fossil fuels in combustion zone, which results in the formation of the flue gas containing a certain amount of unoxidized organic constituentses, flue gas is entered in the combustion chamber of combustion zone downstream；A certain amount of accelerator is added in flue gas in a combustion chamber, the Quick Oxidation for promoting organic constituentses；Obtain at least one measured value related to flue gas；And the amount of accelerator is controlled according at least one measured value.Invention additionally discloses a kind of air pollution control system.
Description
Technical field
The present invention relates generally to air pollution control field, more particularly to a kind of air pollution control processes and
System.
Background technology
Increasingly serious with environmental pollution, the discharge of tail gas is by strict control.In burning process,
The burning of fuel can cause the generation of flue gas.Flue gas would generally contain a certain amount of air pollution composition, example
Such as nitrogen oxides (NOx), NOxIt is the important sources of air pollutants.NOxBe a class colorless and odorless but
It is the general name of the gas with high response, these gases contain different amounts of NO and NO2。
NOxFormed in combustion by two dominant mechanisms：Fuel type NOxAnd thermal NOx.Combustion
Material type NOxThe oxidation of elemental nitrogen (N) from the combination being present in fuel.Thermal NOxCome
From atmospheric nitrogen (N2) high-temperature oxydation.
More specifically, the N and oxygen (O by being organically combined in fuel2) reaction, in flame zone
Middle formation fuel type NOx.Determine fuel type NOxThe key variables of synthesis speed are the O in flame zone2Can
Obtain the chemical constitution of property, the N of fuel-bound amount and the material containing N.Fuel type NOxReaction can be with
Relatively low temperature (<1,100 DEG C) under occur.According to O in flame zone2Availability difference,
Compound containing N can react to form N2Or NOx.Work as O2Availability it is relatively low when, N2It is key reaction production
Thing.If substantial amounts of O2It can use, then the N of the fuel-bound of greater proportion changes into NOx。
On the contrary, by N2With O2Reaction between group, thermal NO is formed in thermal-flame areax。
Determine thermal NOxThe key variables of synthesis speed are temperature, O2And N2Availability and stop when
Between.Due to needing high activation energy, therefore, until flame temperature reaches 1,100 DEG C, thermal NOx's
Formation just becomes notable.
However, due to NOxAs criteria pollutant, sour gas and ozone precursors, so, NOx's
Discharge is typically undesirable, and effect on environment is big.
Therefore, how the discharge by reducing air pollution composition to the processing of flue gas will turn into industry combustion
A major challenge in burning system.
The content of the invention
One aspect of the present invention is to provide a kind of air pollution control processes.Methods described includes：
Combustion of fossil fuels in combustion zone, which results in the flue gas containing a certain amount of unoxidized organic constituentses
Formation, the flue gas entered in the combustion chamber of the combustion zone downstream；By one in the combustion chamber
Quantitative accelerator is added in the flue gas, the Quick Oxidation for promoting the organic constituentses, institute
Accelerator is stated with the temperature of the flue gas at the position of the smoke contacts at about 700 DEG C to about 1200 DEG C
In the range of, residence time of the accelerator with the flue gas in the combustion chamber is enough partly to aoxidize
The accelerator, so that increase the oxidation of the organic constituentses, also, the accelerator and the cigarette
The contact of gas occurs having O2In the presence of, also, O2Content is sufficiently high, so that described
Still there are some O in the flue gas after accelerator oxidation2；Obtain at least one related to the flue gas
Measured value；And the amount of the accelerator is controlled according at least one described measured value.
Another aspect of the present invention is to provide a kind of air pollution control system.The system includes combustion
Burning system, accelerator injection device, measurement apparatus and accelerator controller.The combustion system includes
Combustion zone and the combustion chamber positioned at the combustion zone downstream.The combustion system is used in the combustion zone
Combustion of fossil fuels, which results in the formation of the flue gas containing a certain amount of unoxidized organic constituentses.
The flue gas is entered in the combustion chamber.The accelerator injection device is used in the combustion chamber will
A certain amount of accelerator is added in the flue gas.The accelerator injection device is located in the combustion chamber
The temperature of the flue gas is at the position in the range of about 700 DEG C to about 1200 DEG C.The accelerator and institute
Stating residence time of the flue gas in the combustion chamber is enough partly to aoxidize the accelerator, so as to increase institute
State the oxidation of organic constituentses.A certain amount of accelerator is used to promote the quick of the organic constituentses
Oxidation.The measurement apparatus is used to obtain at least one measured value related to the flue gas.It is described to promote
Agent controller is used to control the amount of the accelerator according at least one described measured value.
Brief description of the drawings
When reading described in detail below referring to the drawings, these and other features of the invention, aspect and excellent
Point will become better understood, in the accompanying drawings, and identical element numbers are used to represent identical in whole accompanying drawings
Part, wherein：
Fig. 1 is showing according to the illustrated air pollution control system of the specific embodiment of the present invention
It is intended to；
Fig. 2 is the schematic accelerator controller of Fig. 1 according to the specific embodiment of the present invention
Schematic diagram；
Fig. 3 is the stream of the illustrated air groundwater pollution control according to the specific embodiment of the present invention
Cheng Tu；And
Fig. 4 is to illustrate how to control the amount of accelerator according at least one measured value related to flue gas
The flow chart of one embodiment.
Embodiment
To help those skilled in the art definitely to understand theme claimed of the invention, under
The embodiment of the present invention is described in detail with reference to accompanying drawing in face.Below to these embodiments
In detailed description, it is unnecessary to avoid that some known functions or construction are not described in detail this specification
Details and have influence on the present invention disclosure.
Unless otherwise defined, the claims and technical term used in the description or section are academic
Language should be the ordinary meaning that the personage with general technical ability is understood in the technical field of the invention.This
" first ", " second " and similar word used in specification and claims not table
Show any order, quantity or importance, and be used only to distinguish different parts." one " or
The similar words such as person " one " are not offered as quantity limitation, but represent there is at least one." comprising " or
The similar words such as person's " having " mean to appear in element before " comprising " or " having " or
Object, which is covered, appears in " comprising " or the element or object of " having " presented hereinafter and its equivalent member
Part, it is not excluded that other elements or object.The similar word such as " connection " or " connected " is not limited
Due to physics or machinery connection, but electrical connection can be included, either directly still
Indirectly.
Fig. 1 shows the illustrated air pollution control system according to the specific embodiment of the present invention
100 schematic diagram.As shown in figure 1, illustrated air pollution control system 100 can include burning system
System 1.Combustion system 1 can include, for example, utility boiler, waste incinerator and other static combustions
Burning system.Combustion system 1 can include combustion zone 11 and the combustion chamber 12 positioned at the downstream of combustion zone 11.
A kind of fossil fuel can be burned in the combustion zone 11 of combustion system 1, and which results in the formation of flue gas.
Flue gas may contain a certain amount of unoxidized organic constituentses, also, flue gas can enter burning
In the combustion chamber 12 of system 1.If however, these unoxidized organic constituentses are without any processing
And be directly discharged in air, then they will turn into air pollutants.
Therefore, in order to promote the destruction of fossil fuel, and the discharge of organic constituentses is reduced, the present invention
The air pollution control system 100 of embodiment can include accelerator injection device 2.Promote
A certain amount of accelerator can be added to flue gas by agent injection device 2 in the combustion chamber 12 of combustion system 1
In.A certain amount of accelerator can promote the Quick Oxidation of organic constituentses, and it is possible to which increasing has
The validity that machine thing component is burned.Accelerator can include, for example, hydrogen (H2), methane (CH4)、
Carbon monoxide (CO) or any paraffin hydrocarbon.Accelerator under low-level (several ppm) is discharged
It is entirely acceptable.As used in this article, term " ppm " refers to relative to flue gas volume
Hundred a ten thousandths.Although any suitable accelerator can be used, in order to which simplification will make below
Use H2It is used as a schematic example of accelerator.
The amount of used accelerator is preferably less than about 0.5 percentage by weight of flue gas, also, more
About 0.2 percentage by weight of preferably less than pending flue gas, because the use meeting of substantial amounts of accelerator
Cause the undesirable discharge of accelerator.The amount of used accelerator is preferably more than about the 0.01 of flue gas
Percentage by weight, so that it is guaranteed that the complete destruction of organic constituentses.These a small amount of accelerator can be enough
Force the complete oxidation of organic constituentses.
In combustion system 1, position (i.e. accelerator injection phase) place's cigarette of accelerator and smoke contacts
The temperature of gas is preferably more than about 700 DEG C.Since at a temperature of below about 700 DEG C, oxidation of organic compounds
Reaction time required for component is longer than what real system can be provided conveniently.Position is injected in accelerator
The temperature of the place's of putting flue gas is preferably less than about 1200 DEG C.Because greater than about 1200 DEG C of temperature, for note
Reaction time required for the complete consumption of the accelerator entered is shorter than incorporation time.In this case,
All flue gases are difficult the accelerator for fully contacting injection.In addition, in greater than about 1200 DEG C of temperature
Under, the unacceptable high evaporation that may result in each heavy metal species is significantly increased.Therefore, in the present invention
Embodiment combustion system 1 in, the temperature of flue gas can be preferred at accelerator injection phase
Ground is in the range of about 700 DEG C to about 1200 DEG C.
Therefore, accelerator injection device 2 is preferably located in the temperature of flue gas in combustion chamber 12 at about 700 DEG C
At position in the range of to about 1200 DEG C.
In combustion system 1, accelerator is enough partly oxygen with residence time of the flue gas in combustion chamber 12
Change accelerator, so as to increase the oxidation of organic constituentses.Accelerator and stop of the flue gas in combustion chamber 12
Time is preferably be sufficient such that essentially all of accelerator is oxidized.Because if essentially all of promote
Enter agent to be oxidized, then essentially all of organic constituentses can be also oxidized.
Moreover, accelerator, is preferably combined with carrying gas, is injected into flue gas, so that promoting
Enter agent to mix with flue gas.Carrying gas can include, for example, air, steam or the flue gas of circulation.
The air pollution control system 100 of the embodiment of the present invention can be used as a kind of enhanced choosing
Selecting property non-catalytic reduction (Enhanced Selective Non-Catalytic Reduction, ESNCR) system
To use.With continued reference to Fig. 1, the air pollution control system 100 of embodiment of the invention is gone back
Nitrogenous reagent injection device 5 can be included.Nitrogenous reagent can be injected into by nitrogenous reagent injection device 5
It is used for the reduction of nitrogen oxides in effluent in flue gas.Nitrogenous reagent can include, for example, ammonia or urea.
In this embodiment, ammonia (NH will be used3) it is used as a schematic example of nitrogenous reagent.
In order to strictly control to be injected into the amount of the accelerator in flue gas, embodiment of the invention
Air pollution control system 100 can also include measurement apparatus 3 and accelerator controller 4.Measurement apparatus 3
At least one measured value related to flue gas can be obtained.Accelerator controller 4 can according to this at least one
Individual measured value controls the amount of accelerator.
Hereinafter, Fig. 1 and Fig. 2 will be combined to be described in detail accelerator controller 4 is how to fill according to measurement
3 at least one measured value is put to control the amount of accelerator.
As shown in figure 1, in a detailed embodiment, measurement apparatus 3 of the invention can include ammonia
(NH3) analyzer 31.Ammonia analyzer 31 can measure the ammonia slip levels in flue gas
Fig. 2 shows showing according to the schematic accelerator controller 4 of the specific embodiment of the present invention
It is intended to.Reference picture 2, accelerator controller 4 can include feedback controller 41.Feedback controller 41 can
With by the ammonia slip levels measuredWith the escaping of ammonia limitIt is compared what is compared to obtain
As a result, also, according to the result of the comparison produce the flow indicating signal F of acceleratorP_O.Accelerator controls
Device 4 can be according to the flow indicating signal F of the accelerator of generationP_OTo control to promote agent flux.The present invention's
The air pollution control system 100 of embodiment can include (such as Fig. 1 of accelerator traffic manager 6
It is shown).Accelerator controller 4 can be controlled to adjust accelerator stream to accelerator traffic manager 6
Amount.
Referring back to Fig. 1, the measurement apparatus 3 of embodiment of the invention can also include temperature and pass
Sensor 32, carbon monoxide (CO) analyzer 33 and sulfur dioxide (SO2) in analyzer 34 at least
One device.Temperature sensor 32 can measure the temperature T of flue gas.CO analyzers 33 can measure cigarette
CO content Fs in gasCO。SO2Analyzer 34 can measure the SO in flue gas2ContentFor example,
In this embodiment, measurement apparatus 3 can include temperature sensor 32, the and of CO analyzers 33
SO2Analyzer 34.
With continued reference to Fig. 2, before the accelerator controller 4 of embodiment of the invention can also include
Present controller 42.Feedforward controller 42 can be according to the temperature T measured, the CO content Fs measuredCO
With the SO measured2ContentIn at least one parameter produce the flux modification signal of accelerator
FP_C.For example, in this embodiment, can be according to the temperature T measured, the CO measured
Content FCOAnd the SO measured2ContentTo produce the flux modification signal F of acceleratorP_C.Promote
Agent controller 4 can be according to the flow indicating signal F of acceleratorP_OWith the flux modification signal F of acceleratorP_C
To control to promote agent flux.
As an example, accelerator controller 4 can also include adder 43.Adder 43 can be with
By the flux modification signal F of acceleratorP_CIncrease to the flow indicating signal F of acceleratorP_OIn, so as to produce
Flow F after the correction of acceleratorP.Accelerator controller 4 can be after the correction according to accelerator
Flow FPTo control to promote agent flux.
It should be noted that the above is only the present invention measurement apparatus 3 and one of accelerator controller 4
Schematic example.However, the measurement apparatus 3 and accelerator controller 4 of the present invention are not limited thereto.
In fact, the measurement apparatus 3 of the present invention can include being used to measure the temperature T of flue gas temperature sensor
32nd, for measuring the CO content Fs in flue gasCOCO analyzers 33, for measuring the SO in flue gas2Contain
AmountSO2Analyzer 34, for measuring the ammonia slip levels in flue gasAmmonia analyzer 31,
Or any combination of them.Correspondingly, accelerator controller 4 can according to the temperature T measured,
The CO content Fs measuredCO, the SO that measures2ContentAnd the escaping of ammonia in the flue gas measured
LevelIn at least one parameter come control promote agent flux.
The air pollution control system 100 of the present invention can be according at least one measured value related to flue gas
Dynamically to adjust promotion agent flux.Therefore, air pollution control system 100 of the invention can be significantly
Ground reduces the discharge of organic constituentses.
When the air pollution control system 100 of the present invention is used as ESNCR systems, sky of the invention
Gas pollution control system 100 can maximize the reduction of nitrogen oxides, further, it is possible to by the escaping of ammonia water
It is flatMinimize, so as to reduce the discharge of organic constituentses.
The present invention can also provide a kind of air pollution control processes.Fig. 3 shows one according to the present invention
The flow chart of the illustrated air groundwater pollution control of embodiment.
As shown in figure 3, in step B31, fossil fuel can be burnt in combustion zone 11, this leads
The formation of flue gas is caused.Flue gas may contain a certain amount of unoxidized organic constituentses, also, cigarette
Gas can be entered in the combustion chamber 12 positioned at the downstream of combustion zone 11.
In step B32, a certain amount of accelerator can be added in flue gas in combustion chamber 12, used
In the Quick Oxidation for promoting organic constituentses.Contact of the accelerator with flue gas can occur having O2Exist
In the case of, also, O2Content is sufficiently high, so that still having one in flue gas after accelerator aoxidizes
A little O2.The temperature of flue gas is preferably at about 700 DEG C to about 1200 DEG C at the position of accelerator and smoke contacts
In the range of.Accelerator is enough partly oxidation accelerator with residence time of the flue gas in combustion chamber 12,
So as to increase the oxidation of organic constituentses.Accelerator, is preferably combined with carrying gas, is injected into cigarette
In gas.
In step B33, at least one measured value related to flue gas can be obtained.It is related to flue gas
At least one measured value can include, for example, in the temperature T for the flue gas measured, the flue gas measured
CO content FsCO, SO in the flue gas measured2ContentThe escaping of ammonia in the flue gas measured
LevelOr any combination of them.
In an optional embodiment, method of the invention can be with SNCR
(Selective Non-Catalytic Reduction, SNCR) technology is combined.Therefore, tool of the invention
The method of body embodiment can also include optional step B34 before step B33.Optionally walking
, can be by nitrogenous reagent, such as ammonia or urea in rapid B34, being injected into flue gas is used for nitrogen oxygen in flue gas
The reduction of compound.
In step B35, the amount of accelerator is controlled according at least one measured value.Preferably, may be used
It is about 0.5 percentage by weight less than flue gas so that the amount of accelerator to be controlled.It is further preferred that can be by
The amount control of accelerator is about 0.2 percentage by weight less than flue gas.Preferably, can be by accelerator
Amount control is about 0.01 percentage by weight more than flue gas.In the embodiment including step B34,
Can be by controlling to promote the ratio of agent flux and the nitrogenous reagent flow measured to control the amount of accelerator.
Fig. 4 show according to the specific embodiment of the present invention how according to it is related to flue gas at least
The step of amount of one measured value to control accelerator.In Fig. 4 step B41, flue gas can be measured
In ammonia slip levels
, can be by the ammonia slip levels measured in step B42With the escaping of ammonia limitEnter
Row compares, so as to obtain result of the comparison.
In step B43, the flow indicating signal F of accelerator can be produced according to the result of the comparisonP_O。
In step B44, the CO content Fs in the temperature T of flue gas, flue gas can be measuredCOIn flue gas
SO2ContentIn at least one parameter.
, can be according to the temperature T measured, the CO content Fs measured in step B45COAnd measurement
The SO gone out2ContentIn at least one parameter produce the flux modification signal F of acceleratorP_C。
, can be according to the flow indicating signal F of the accelerator produced in step B43 in step B46P_O
With the flux modification signal F of the accelerator produced in step B45P_CAfter correction to produce accelerator
Flow FP.For example, can be by the flux modification signal F of the accelerator produced in step B45P_CIncrease
It is added to the flow indicating signal F of the accelerator produced in step B43P_OIn, so as to produce accelerator
Flow F after correctionP。
, can be according to the flow F after the correction of the accelerator of generation in step B47PTo adjust rush
Enter agent flux, so that by the amount control of accelerator to desired value or in desired scope.
The method of the present invention can dynamically adjust promotion according at least one measured value related to flue gas
Agent flux.Therefore, method of the invention can greatly reduce the discharge of organic constituentses.
When the method for the present invention is applied in SNCR technologies, method of the invention can be by nitrogen oxides
Reduction is maximized, further, it is possible to by ammonia slip levelsMinimize, so as to reduce organic constituentses
Discharge.
Although being shown as work(according to the action of the air pollution control processes of the embodiment of the present invention
Energy block, it is still, dynamic between the order and each functional block of each functional block shown in Fig. 3 and Fig. 4
The separation of work is not intended to restricted.For example, each functional block can be executed in different order,
Also, with One function block be associated action can be combined with one or more other functional block or
Person can be subdivided into multiple functional blocks.
Although the present invention is described in detail with reference to specific embodiment, the skill of this area
Art personnel are appreciated that can be so that many modifications may be made and modification to the present invention.It is therefore contemplated that, power
All such modifications and modification for being intended to be covered in true spirit of the present invention and scope of sharp claim.
Claims (14)
1. a kind of air pollution control processes, it includes：
The combustion of fossil fuels in combustion zone, which results in contain a certain amount of unoxidized organic constituentses
Flue gas formation, the flue gas entered in the combustion chamber of the combustion zone downstream；
A certain amount of accelerator is added in the flue gas in the combustion chamber, for promoting described to have
The Quick Oxidation of machine thing component, the accelerator and the temperature of the flue gas at the position of the smoke contacts
In the range of about 700 DEG C to about 1200 DEG C, the accelerator is with the flue gas in the combustion chamber
Residence time is enough partly to aoxidize the accelerator, so that increase the oxidation of the organic constituentses, and
And, accelerator contact with the flue gas occurs having O2In the presence of, also, O2Content
It is sufficiently high, so that still having some O in the flue gas after the accelerator aoxidizes2；
Obtain at least one measured value related to the flue gas；And
The amount of the accelerator is controlled according at least one described measured value.
2. according to the method described in claim 1, wherein, obtain it is related to the flue gas it is described at least
One measured value includes：Measure the temperature, the CO contents in the measurement flue gas, measurement of the flue gas
SO in the flue gas2Ammonia slip levels or its any combinations in content, the measurement flue gas.
3. according to the method described in claim 1, it also includes：Nitrogenous reagent is injected into the flue gas
In be used for the nitrogen oxides in effluent reduction.
4. method according to claim 3, wherein, obtain it is related to the flue gas it is described at least
One measured value includes：The ammonia slip levels in the flue gas are measured, wherein, control the accelerator
Amount includes：
The ammonia slip levels measured and the escaping of ammonia limit are compared to obtain result of the comparison；
The flow indicating signal of the accelerator is produced according to the result of the comparison；And
Promotion agent flux is adjusted according to the flow indicating signal of the accelerator of the generation.
5. method according to claim 4, wherein, obtain it is related to the flue gas it is described at least
One measured value also includes：Measure the temperature, the CO contents in the flue gas and the cigarette of the flue gas
SO in gas2At least one parameter in content, also, wherein control the amount of the accelerator also to include：
According to the temperature measured, the CO contents measured and the SO measured2Content
In at least one described parameter produce the flux modification signal of the accelerator；
The flow that the flux modification signal of the accelerator increases to the accelerator is indicated into letter
In number, so that the flow signal after producing the correction of the accelerator；And
The promotion agent flux is adjusted according to the flow signal after the correction of the accelerator.
6. method according to claim 3, it also includes：Measurement is injected into containing in the flue gas
Nitrogen reagent flow, wherein, controlling the amount of the accelerator includes：Control promotes agent flux and the measurement
The ratio of the nitrogenous reagent flow gone out.
7. a kind of air pollution control system, it includes：
Combustion system, it includes combustion zone and the combustion chamber positioned at the combustion zone downstream, wherein, it is described
Combustion system is used for the combustion of fossil fuels in the combustion zone, and which results in do not aoxidized containing a certain amount of
Organic constituentses flue gas formation, the flue gas entered in the combustion chamber；
Accelerator injection device, it is used in the combustion chamber a certain amount of accelerator being added to described
In flue gas, wherein, the accelerator injection device is located at the temperature of flue gas described in the combustion chamber about
At position in the range of 700 DEG C to about 1200 DEG C, the accelerator is with the flue gas in the combustion chamber
In residence time be enough partly to aoxidize the accelerator, so as to increase the oxidation of the organic constituentses,
A certain amount of accelerator is used for the Quick Oxidation for promoting the organic constituentses；
Measurement apparatus, it is used to obtain at least one measured value related to the flue gas；And
Accelerator controller, it is used to control the amount of the accelerator according at least one described measured value.
8. system according to claim 7, wherein, the accelerator includes H2、CO、CH4、
Paraffin hydrocarbon or its combination.
9. system according to claim 7, wherein, the measurement apparatus includes being used to measure described
The temperature sensor of the temperature of flue gas, the CO analyzers for measuring the CO contents in the flue gas,
For measuring the SO in the flue gas2The SO of content2Analyzer, for measuring the escaping of ammonia in the flue gas
The ammonia analyzer or its any combinations of level.
10. system according to claim 7, it also includes：
Nitrogenous reagent injection device, it is used for nitrogenous reagent and is injected into the flue gas in the flue gas
The reduction of nitrogen oxides.
11. system according to claim 10, wherein, the measurement apparatus is used to measure the cigarette
Ammonia slip levels in gas, also, the accelerator controller includes：
Feedback controller, it is used to the ammonia slip levels measured and the escaping of ammonia limit being compared
To obtain result of the comparison, also, produce using the result of the comparison flow of the accelerator and refer to
Show signal,
Wherein, the accelerator controller according to the flow indicating signal of the accelerator of the generation come
Control promotes agent flux.
12. system according to claim 11, wherein, it is described that the measurement apparatus is additionally operable to measurement
The SO in CO contents and the flue gas in the temperature of flue gas, the flue gas2At least one ginseng in content
Measure, also, the accelerator controller also includes：
Feedforward controller, its be used for according to described in measure temperature, the CO contents measured and
The SO measured2At least one described parameter in content produces the flux modification of the accelerator
Signal,
Wherein, the accelerator controller is according to the flow indicating signal and the rush of the accelerator
Enter the flux modification signal of agent to control the promotion agent flux.
13. system according to claim 7, wherein, a certain amount of accelerator and carrying gas
With reference to being injected into the flue gas.
14. system according to claim 7, wherein, the accelerator controller will be described a certain amount of
Accelerator control in the range of about 0.01 to about the 0.5 of flue gas percentage by weight.
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| CN201610073419.9A CN107023823A (en) | 2016-02-02 | 2016-02-02 | Air pollution control processes and system |
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| CN201610073419.9A CN107023823A (en) | 2016-02-02 | 2016-02-02 | Air pollution control processes and system |
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| US20090277363A1 (en) * | 2008-05-07 | 2009-11-12 | Hitachi, Ltd. | Oxyfuel Boiler System and Method of Retrofit of Air Fired Boiler to Oxyfuel Boiler |
| CN101979846A (en) * | 2009-06-17 | 2011-02-23 | 通用汽车环球科技运作公司 | Exhaust gas treatment system including a lean NOx trap and two-way catalyst and method of using the same |
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