CN109569217A - Lotus root closes oxidation NO cooperation-removal combined pollutant device and removal methods - Google Patents
Lotus root closes oxidation NO cooperation-removal combined pollutant device and removal methods Download PDFInfo
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- CN109569217A CN109569217A CN201811558855.0A CN201811558855A CN109569217A CN 109569217 A CN109569217 A CN 109569217A CN 201811558855 A CN201811558855 A CN 201811558855A CN 109569217 A CN109569217 A CN 109569217A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
- B01D53/323—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
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- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The present invention relates to fume treatment auxiliary technical fields more particularly to a kind of lotus root to close oxidation NO cooperation-removal combined pollutant device and removal methods.A kind of lotus root conjunction oxidation NO cooperation-removal combined pollutant device, including the exhaust gas generator for preliminary denitration, electric precipitator and desulfurization module for dedusting, wherein: further including the plasma reactor for aoxidizing NO, electric precipitator includes electric precipitator ontology, efficient power, first plasma power supply and the first discharge part, first discharge part is set in electric precipitator ontology, efficient power and the first plasma power supply, which are set on electric precipitator ontology and respectively with the first discharge part, to be connected, exhaust gas generator is connected with the first input end of electric precipitator ontology, plasma reactor is connected with the first output end of electric precipitator ontology, desulfurization module is connected with plasma reactor.The present invention is by the setting to electric precipitator, plasma reactor and desulfurization module, to remove the NO and Elemental Mercury in flue gas, prevents it from polluting atmosphere.
Description
Technical field
The present invention relates to fume treatment auxiliary technical fields more particularly to a kind of lotus root to close oxidation NO cooperation-removal combined pollution
Object device and removal methods.
Background technique
Thermoelectricity, metallurgy, biomass can generate flue gas after burning, and can contain a large amount of sour gas SO in this flue gasX
And NOXIt is expelled directly out if not handling, it will cause air pollutions, endanger environment.
Equipment in existing market passes through electric precipitator mostly and generates electric field of the same race to be dusted to flue gas, and will be through removing
Flue gas after dirt, which is directly discharged into desulfurization module, removes sulfur-containing oxide, is finally discharged.In the process, not to containing in flue gas
Some lower valency nitrogen oxides carry out, thus are discharged into the flue gas in atmosphere the low price nitrogen oxidation still containing pollution atmospheric environment
Object.
Summary of the invention
Atmospheric environment is directly discharged into order to solve the nitrogen oxides of flue gas middle or low price state in the related technology to which pollution is big
The technical issues of gas, the embodiment of the invention provides a kind of lotus roots to close oxidation NO cooperation-removal combined pollutant device and removing side
Method, its object is to the nitrogen oxides by the nitrogen oxides of the lower valency in flue gas at high-valence state, in order to be passed through
Collaboration is removed from flue gas.
In a first aspect, the present invention provides a kind of lotus roots to close oxidation NO cooperation-removal combined pollutant device, including for just
Walk exhaust gas generator, the electric precipitator and desulfurization module for dedusting of denitration, in which: further include the plasma for aoxidizing NO
Reactor, electric precipitator include electric precipitator ontology, efficient power, the first plasma power supply and the first discharge part, the first electric discharge
Portion is set in electric precipitator ontology, and efficient power and the first plasma power supply are set on electric precipitator ontology and respectively with
One discharge part is connected, and exhaust gas generator is connected with the first input end of electric precipitator ontology, plasma reactor and electric precipitator
First output end of ontology is connected, and desulfurization module is connected with plasma reactor.
Strong electrical field is initially formed using efficient power by electric precipitator, thus it is charged to dust particles with high-effective dust-removing, then
It, will by the first plasma power supply to the flue gas progress streamer-discahrge after dedusting to ionize the free radical for providing strong oxidizing property
The nitrogen oxides of lower valency in flue gas are at the nitrogen oxides and mercury oxidation of high-valence state at mercury ion；Pass through equity again
The setting of ion reactor, it is ensured that the lower valency nitrogen oxides in flue gas is substantially oxidized, and is finally cooperateed with cigarette with desulfurization module
High-valence state nitrogen oxides, mercury ion and sulfur-containing oxide removal in gas, to realize the purpose of purifying smoke, avoid flue gas
The nitrogen oxides pollution atmosphere of middle or low price state；In addition, can be carried out to flue gas tentatively de- by the setting to exhaust gas generator
The nitrogen oxides of flue gas middle or low price state is reduced into nitrogen by exhaust gas generator, at the beginning of reducing exhaust gas generator exports by nitre
The concentration of beginning nitrogen oxides.
Optionally, the first discharge part includes the first discharge electrode and the second discharge electrode, the first discharge electrode and the second discharge electrode edge
First input end to the first output end is set in turn in electric precipitator ontology, and efficient power is connected with the first discharge electrode, and first
Plasma power supply is connected with the second discharge electrode.
By the setting to the first discharge electrode, power convenient for efficient power to the first discharge electrode, in the first discharge electrode shape
At strong electrical field, so that the dust particles in flue gas are charged, convenient for being removed；By the setting to the second discharge electrode, just
It powers in the first plasma power supply to the second discharge electrode, so as to streamer-discahrge be generated around the second discharge electrode, thus by flue gas point
Son ionizes out a large amount of free radicals with strong oxidizing property, free radical reacted with the nitrogen oxides of flue gas middle or low price state and mercury with by its
It is oxidized to high-valence state nitrogen oxides and mercury ion, is removed consequently facilitating being cooperateed with desulfurization module.
Optionally, the first discharge electrode and the second discharge electrode are set gradually along first input end to the first output end.
By the way that the first discharge electrode is closed on first input end setting, successively pass through after entering in electric precipitator in order to flue gas
The electric field that the strong electrical field and the second discharge electrode that first discharge electrode is formed are formed is prevented pair with first removing the dust particles in flue gas
When flue gas middle or low price state nitrogen oxides, due to the abrasion of dust particles, interference cause to aoxidize it is insufficient.
Optionally, efficient power is high frequency electric source；Alternatively, efficient power is the pulse power；Alternatively, efficient power is three-phase
Power supply.
By the selection to efficient power, convenient for being formed about stable strong electrical field in electric precipitator first input end, with
Sufficiently make dust charged, consequently facilitating dust is removed, improves efficiency of dust collection.
Optionally, plasma reactor includes reactor body, the second plasma power supply and the second discharge part, reactor sheet
Second input terminal of body is connected with the first output end of electric precipitator ontology, the second output terminal and desulfurization module of reactor body
It is connected, the second discharge part is set in reactor body, and the second plasma power supply is connected with the second discharge part.
It is powered by the second plasma power supply to the second discharge part, so as to be ionized out around the second power supply a large amount of with work
NO at the nitrogen oxides of high-valence state, i.e., is aoxidized the nitrogen oxides of lower valency by the free radical material of property, free radical material
At NO2、N2O3、N2O4、N2O5Deng, and the flue gas containing high-valence state nitrogen oxides is input to desulfurization module and cooperation-removal.
Optionally, desulfurization module includes desulfurization ontology, for absorbing after electric precipitator and plasma reactor oxidation
The lye circulated sprinkling device of high-valence state nitrogen oxides and high efficiency demister for trapping the particulate matters such as aerosol, on desulfurization ontology
Equipped with third input terminal and third output end, third input terminal is connected with plasma reactor, lye circulated sprinkling device and efficiently
Demister is all set in desulfurization body interior, and third output end, high efficiency demister, lye circulated sprinkling device and third input terminal
It is set gradually from top to bottom along desulfurization ontology.
Can be diffused up since flue gas enters in desulfurization ontology, by third input terminal, lye circulated sprinkling device, efficiently
Demister and third output end are set gradually from lower to upper, are sufficiently sprayed in order to be input to the intrinsic flue gas of desulfurization
Leaching to remove high-valence state nitrogen oxides and the mercury ion in flue gas, then by the dispersion generated by spray and is suspended in flue gas
The aerosol particles such as dust little particle or drop fine particle are removed by high efficiency demister.
Optionally, it is connected between exhaust gas generator and first input end by original flue gas cool-down heat exchanger, desulfurization module
Third output end is connected with neat stress temperature rise heat exchanger, is connected with and follows between former flue gas cool-down heat exchanger and neat stress temperature rise heat exchanger
Ring pump.
By former flue gas cool-down heat exchanger by near the flue gas cool-down after preliminary denitration to condensation point, so that flue gas includes
Some sulfuric acid vapors condense and are attracted to dust surface, are efficiently removed after inputting electric precipitator with flue gas；It will be through desulfurization group
Part treated flue gas by neat stress temperature rise heat exchanger to be heated to gas, to accelerate the diffusion of flue gas, convenient for by flue gas
Discharge.
Second aspect, it is special the present invention provides the removal methods that a kind of lotus root closes oxidation NO cooperation-removal combined pollutant
Sign is, is applied to close in oxidation NO cooperation-removal combined pollutant device such as above-mentioned lotus root, removal methods include: exhaust gas generator
Lower valency nitrogen oxides in flue gas is reduced into nitrogen；Electric precipitator cooperates the first discharge part to remove flue gas by efficient power
In dust particle, then cooperate the first discharge part by the lower valency nitrogen oxides in flue gas by the first plasma power supply
At high-valence state nitrogen oxides, and by mercury oxidation at mercury ion；Plasma reactor will be in the flue gas after electric precipitator aoxidizes
Lower valency nitrogen oxides are at high-valence state nitrogen oxides；High-valence state nitrogen oxides, mercury in desulfurization module collaboration removal flue gas
Ion and sulfur dioxide, and remove the fine solid particle particle in flue gas.
Preliminary denitration is carried out to flue gas by exhaust gas generator, then flue gas is dusted by electric precipitator and will low price
State nitrogen oxides and mercury oxidation, then flue gas is further aoxidized by plasma reactor, in order to by the lower valency in flue gas
The fully oxidized high-valence state nitrogen oxides of nitrogen oxides, finally by being cooperateed with desulfurization module by high-valence state nitrogen oxides and mercury ion
And the sulfur-containing oxide removing in flue gas, so that flue gas reaches discharge standard, convenient for discharging and not polluting atmosphere.
Optionally, plasma reactor includes that reactor body, the second plasma power supply and the second discharge part, plasma are anti-
Answering device by the lower valency nitrogen oxides in the flue gas after electric precipitator aoxidizes includes: second etc. at high-valence state nitrogen oxides
Ion power supply is powered to the second discharge part, and the second discharge part surface is made to generate active free radical, and free radical will be input to
Lower valency nitrogen oxides in flue gas in reactor body are at high-valence state nitrogen oxides.
It is powered by the second plasma power supply to the second discharge part, flue gas molecular ionization is gone out into free radical, thus by cigarette
The nitrogen oxides of gas middle or low price state, so that the lower valency nitrogen oxides in flue gas is substantially oxidized, to prevent in flue gas
Lower valency nitrogen oxides is remained by flue gas is discharged into atmosphere together with treated, to pollute air.
Optionally, desulfurization module includes that desulfurization ontology, lye circulated sprinkling device and high efficiency demister, desulfurization module remove smoke abatement
High-valence state nitrogen oxides, mercury ion and sulfur dioxide in gas, and removing the fine solid particle particle in flue gas includes: that lye follows
Ring spray thrower into the intrinsic flue gas of desulfurization carry out spray medical fluid with by flue gas high-valence state nitrogen oxides, mercury ion with
And sulfur dioxide removal, high efficiency demister take off the colloidal dispersion system formed after lye circulated sprinkling device spray from flue gas
It removes.
It first passes through lye circulated sprinkling device to spray the flue gas for entering desulfurization ontology, by the high-valence state nitrogen oxygen in it
Compound, mercury ion and sulfur dioxide removal, since flue gas is after spraying, dust little particle or drop fine particle are easy to disperse and hang
It floats on and forms the particulate matters such as aerosol in flue gas, therefore again removed the particulate matters such as aerosol by high efficiency demister.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Invention.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram that a kind of lotus root provided by the invention closes oxidation NO cooperation-removal combined pollutant device；
Fig. 2 is the flow chart for the removal methods that lotus root provided by the invention closes oxidation NO cooperation-removal combined pollutant.
In figure: 100, exhaust gas generator；110, SNCR denitration component；120, SCR denitration component；200, former flue gas cool-down changes
Hot device；300, electric precipitator；310, electric precipitator ontology；311, first input end；312, the first output end；320, efficient electric
Source；330, the first plasma power supply；400, air-introduced machine；500, desulfurization module；510, desulfurization ontology；511, third input terminal；
512, third output end；520, lye circulated sprinkling device；521, spray head；522, kinetic pump；530, high efficiency demister；600, net
Flue gas temperature rise heat exchanger；700 circulating pumps；800, plasma reactor；810, reactor body；811, the second input terminal；812,
Second output terminal；820, the second plasma power supply；830, the second discharge part；900, chimney.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.Below with reference to
The embodiment of attached drawing description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Equipment in existing market passes through electric precipitator mostly and generates electric field of the same race to be dusted to flue gas, and will be through removing
Flue gas after dirt, which is directly discharged into desulfurization module, removes sulfur-containing oxide, is finally discharged.In the process, it fails to in flue gas
The lower valency nitrogen oxides contained is removed, thus is discharged into the flue gas in atmosphere the low price still containing pollution atmospheric environment
Nitrogen oxides.
Atmospheric environment is directly discharged into order to solve the nitrogen oxides of flue gas middle or low price state in the related technology to which pollution is big
The technical issues of gas, the embodiment of the invention provides device and removing sides that a kind of lotus root closes oxidation NO cooperation-removal combined pollutant
Method, its object is to the nitrogen oxides by the nitrogen oxides of the lower valency in flue gas at high-valence state, in order to be passed through
Collaboration is removed from flue gas.It is lifted below with reference to the structure that Fig. 1 closes oxidation NO cooperation-removal combined pollutant device to the lotus root
Example explanation.
It includes exhaust gas generator 100, electric precipitator 300, desulfurization that the lotus root, which closes oxidation NO cooperation-removal combined pollutant device,
Component 500 and plasma reactor 800, exhaust gas generator 100 is used to carry out preliminary denitration to flue gas, i.e., by flue gas middle or low price state
Nitrogen oxides be reduced into nitrogen, consequently facilitating discharge when do not pollute air, electric precipitator 300 is successively to through exhaust gas generator
100 treated that flue gas is dusted and aoxidizes, and plasma reactor 800 is used for the flue gas after the oxidation of electric precipitator 300
In lower valency nitrogen oxides further aoxidize, desulfurization module 500 is for removing the high-valence state nitrogen oxidation after being oxidized in flue gas
The sulfur dioxide ingredient contained in object, mercury ion and flue gas.
In the present embodiment, electric precipitator 300 includes electric precipitator ontology 310, efficient power 320, the first plasma electric
Source 330 and the first discharge part, the first discharge part are set in electric precipitator ontology 310, efficient power 320 and the first plasma electric
Source 330, which is set on electric precipitator ontology 310 and respectively with the first discharge part, to be connected, exhaust gas generator 100 and electric precipitator sheet
The first input end 311 of body 310 is connected, and plasma reactor 800 is connected with the first output end 312 of electric precipitator ontology 310,
Desulfurization module 500 is connected with plasma reactor 800.
Optionally, the first discharge part includes the first discharge electrode and the second discharge electrode, the first discharge electrode and the second discharge electrode edge
311 to the first output end 312 of first input end is set in turn in electric precipitator ontology 310, efficient power 320 and the first electric discharge
Extremely it is connected, the first plasma power supply 330 is connected with the second discharge electrode.Furthermore, the first discharge electrode and the second discharge electrode
Set gradually along 311 to the first output end 312 of first input end, in order to after flue gas enters in electric precipitator ontology 310 according to
It is secondary to pass through the first discharge electrode and the second discharge electrode, and exported by the first output end 312.
In specific implementation, the first discharge electrode includes first anode plate and the first cathode line, efficient power 320 and
One cathode line is connected, and first anode plate and the first cathode line are staggered in electric precipitator ontology 310 and and first input end
311 is adjacent.When first anode plate quantity is at least two, the quantity of the first cathode line is according to the quantity Matching of first anode plate
Setting, for example, when first anode plate quantity is two, first anode plate and the first cathode line are relatively parallel and any
First anode plate adjacent locations are equipped with the first cathode line, and any first cathode line adjacent locations are equipped with first anode plate.
In the present embodiment, the second discharge electrode includes the second cathode plate and second plate line, the first plasma power supply 330 with
Second plate line is connected, and the second cathode plate and second plate line are staggered and put in electric precipitator ontology 310 and positioned at first
Between electrode and the first output end 312.When the second cathode plate quantity is at least two, the second cathode plate and second plate line
Setting referring to above-mentioned first anode plate and the first cathode line is set, is not repeated elaboration to this in the application.
Optionally, efficient power 320 is high frequency electric source；Alternatively, efficient power 320 is the pulse power；Alternatively, efficient power
320 be three phase mains.In specific implementation, 330 quantity of the first plasma power supply is at least two, in order in electric precipitation
A certain range of electric field is formed in device ontology 310, so that the lower valency nitrogen oxides and mercury in flue gas are substantially oxidized.
Optionally, plasma reactor 800 includes reactor body 810, the second plasma power supply 820 and the second discharge part
830, the second input terminal 811 of reactor body 810 is connected with the first output end 312 of electric precipitator ontology 310, reactor sheet
The second output terminal 812 of body 810 is connected with desulfurization module 500, and the second discharge part 830 is set in reactor body 810, and second
Plasma power supply 820 is connected with the second discharge part 830.
In general, the second discharge part 830 includes block media and discharge electrode, block media and discharge electrode are alternatively arranged in anti-
It answers inside device ontology 810, the second plasma power supply 820 is connected with discharge electrode.In the actual operation process, the second plasma power supply
820 power to discharge electrode, so that the H in flue gas2O、O2Equal substances, which are excited to activate, generates O, OH, O2H, the free radical materials such as H,
Free radical material has strong oxidizing property thus by the nitrogen oxides of flue gas middle or low price state at high-valence state nitrogen oxides, such as by NO
It is oxidized to NO2、N2O3、N2O4、N2O5Deng consequently facilitating being cooperateed with desulfurization module 500 by high-valence state nitrogen oxides, mercury ion and two
Sulfur oxide is removed from flue gas, to prevent polluting environment.
Desulfurization module 500 includes desulfurization ontology 510, for absorbing after the oxidation of 300 plasma reactor 800 of electric precipitator
High-valence state nitrogen oxides lye circulated sprinkling device 520 and high efficiency demister 530 for trapping the particulate matters such as aerosol, take off
Sulphur ontology 510 is equipped with third input terminal 511 and third output end 512, third input terminal 511 and 800 phase of plasma reactor
Even, lye circulated sprinkling device 520 and high efficiency demister 530 are all set in inside desulfurization ontology 510, and third output end 512, height
Effect demister 530, lye circulated sprinkling device 520 and third input terminal 511 are set gradually from top to bottom along desulfurization ontology 510.
Flue gas is inputted in desulfurization ontology 510 and is diffused up from third input terminal 511, and lye circulated sprinkling component sprays it
Leaching, to dissolve high-valence state nitrogen oxides, mercury ion and the sulfur dioxide in flue gas, then by the removal of high efficiency demister 530 because of spray
Drench the dispersion generated and the aerosol particles object such as the dust little particle being suspended in flue gas or drop fine particle.
In general, lye circulated sprinkling component includes spray head 521 and kinetic pump 522, spray head 521 is set to desulfurization sheet
In body 510, and it is located at the top of third input terminal 511, the lower section of high efficiency demister 530, kinetic pump 522 and 521 phase of spray head
Even, kinetic pump 522 is also connected with the bottom sidewall of desulfurization ontology 510, in order to spray the Liquid extracting of 510 bottom of desulfurization ontology
Head 521 is drenched to spray.
Optionally, lye circulated sprinkling device 520 further includes the reservoir for storing medical fluid, and reservoir is connected with kinetic pump 522,
When the liquid in desulfurization ontology 510 be recycled number it is more after, by being opened up in 510 bottom of desulfurization ontology or bottom sidewall
Leakage fluid dram liquid is discharged, and the medical fluid in reservoir is extracted to spray head 521 by kinetic pump 522 and is sprayed.In this reality
It applies in example, medical fluid can be weak white liquor.
For the ease of accelerating the speed that flue gas enters reactor body 810,310 first output end 312 of electric precipitator ontology
It is equipped between 810 second input terminal 811 of reactor body for the flue gas in electric precipitator ontology 310 to be discharged into reactor sheet
Air-introduced machine 400 in body 810.
Optionally, neat stress temperature rise heat exchanger 600 is connected with chimney 900, in order to which the flue gas after will heat up passes through chimney
900 outputs are into atmospheric environment.
Optionally, it is connected between exhaust gas generator 100 and first input end 311 by former flue gas cool-down heat exchanger 200, is taken off
The third output end 512 of sulphur component 500 is connected with neat stress temperature rise heat exchanger 600, former flue gas cool-down heat exchanger 200 and neat stress
Circulating pump 700 is connected between temperature rise heat exchanger 600.
In specific implementation, former flue gas cool-down heat exchanger 200 is by the flue gas cool-down after preliminary denitration to condensation point
Near, so that the sulfuric acid vapor contained in flue gas condenses and is attracted to dust surface, with quilt after flue gas input electric precipitator 300
Efficiently removal；In addition, will be through treated the flue gas of desulfurization module 500 by 900 discharge process of chimney, in desulfurization module 500
Neat stress temperature rise heat exchanger 600 is set between chimney 900 to heat to gas, to accelerate the diffusion of flue gas.
Furthermore, former flue gas cool-down heat exchanger 200 absorbs electric precipitator ontology 310 first by heat transferring medium of water
The heat of flue gas at input terminal 311 is with by flue gas cool-down, water absorbs thermal temperature and increases, and circulating pump 700 is raised by temperature
Water is extracted to neat stress temperature rise heat exchanger 600, and the higher water of temperature heats up to neat stress, to accelerate the expansion of flue gas
Dissipate, coolant-temperature gage reduces, then the water after being reduced temperature by circulating pump 700 extract in former flue gas cool-down heat exchanger 200 with cold
But flue gas realizes the recycling of water with this, reduces the consumption of energy.
Optionally, exhaust gas generator 100 is SNCR denitration generator 110；Alternatively, exhaust gas generator 100 is SCR denitration hair
Raw device 120；Alternatively, exhaust gas generator 100 is SNCR and SCR combined denitration generator.In the present embodiment, SNCR and SCR is de-
It includes SNCR denitration generator 110 and SCR denitration generator 120, the output end of SNCR denitration generator 110 that nitre, which combines generator,
It is connected with the first pipeline, the output end of SCR denitration generator 120 is connected with the second pipeline, and the first pipeline and the second pipeline pass through third
Piping connection, third pipeline is connected with former flue gas cool-down heat exchanger 200, in order to which user independently selects to use SNCR denitration
Device 110 or SCR denitration generator 120 to carry out preliminary denitration to flue gas.
In conclusion the present invention is initially formed strong electrical field using efficient power by electric precipitator, thus to dust particles lotus
Electricity is with high-effective dust-removing, then carries out streamer-discahrge to the flue gas after dedusting by the first plasma power supply and provided Strong oxdiative to ionize
The free radical of property, by the nitrogen oxides of the lower valency in flue gas at the nitrogen oxides and mercury oxidation of high-valence state at mercury
Ion；Passing through the setting to plasma reactor again, it is ensured that the lower valency nitrogen oxides in flue gas is substantially oxidized, finally by
It is cooperateed with desulfurization module by high-valence state nitrogen oxides, mercury ion and the sulfur-containing oxide removal in flue gas, to realize purification
The purpose of flue gas avoids the nitrogen oxides pollution atmosphere of flue gas middle or low price state；In addition, by the setting to exhaust gas generator, it can
To carry out preliminary denitration to flue gas, i.e., the nitrogen oxides of flue gas middle or low price state is reduced by nitrogen by exhaust gas generator, reduced
The concentration of the initial nitrogen oxides of exhaust gas generator exports.
Fig. 2 is the stream for the removal methods that lotus root provided by one embodiment of the present invention closes oxidation NO cooperation-removal combined pollutant
Cheng Tu, the removal methods can be applied to above-mentioned lotus root and close oxidation NO cooperation-removal combined pollutant device, which includes:
Step 201, the lower valency nitrogen oxides in flue gas is reduced into nitrogen by exhaust gas generator.
Optionally, exhaust gas generator 100 be SNCR denitration generator 110, in the present embodiment, by addition reducing agent with
Nitrogen oxides in flue gas is reduced to nitrogen and water；Alternatively, exhaust gas generator 100 is SCR denitration generator 120, in this reality
It applies in example, by addition catalyst the nitrogen oxides in flue gas is reduced to nitrogen and water.
In the present embodiment, original is connected between exhaust gas generator 100 and the first input end 311 of electric precipitator ontology 310
Flue gas cool-down heat exchanger 200, after flue gas is reduced into nitrogen by exhaust gas generator 100, former flue gas cool-down heat exchanger 200 is by flue gas
It is cooled near condensation point, so that the sulfuric acid vapor contained in flue gas is condensed, to be removed from flue gas, and will treated cigarette
Gas is input in electric precipitator 300.
Step 202, electric precipitator cooperates the first discharge part to remove the dust particle in flue gas by efficient power, then leads to
Crossing the first plasma power supply cooperates the first discharge part by the lower valency nitrogen oxides in flue gas at high-valence state nitrogen oxides, and
By mercury oxidation at mercury ion.
Optionally, the first discharge part includes the first discharge electrode and the second discharge electrode, and efficient power 320 is supplied to the first discharge electrode
Electricity is to generate strong electrical field in the first discharge electrode, and after flue gas enters strong electrical field, the dust particles inside contained are charged to be enriched in first
On the first anode plate of discharge electrode, thus by being removed from flue gas；First plasma power supply 330 to the second discharge electrode power so that
Ionize out a large amount of free radicals with strong oxidizing property around second discharge electrode, free radical by flue gas lower valency nitrogen oxides and
Mercury oxidation is at high-valence state nitrogen oxides and mercury ion.
Step 203, plasma reactor by the lower valency nitrogen oxides in the flue gas after electric precipitator aoxidizes at
High-valence state nitrogen oxides.
Optionally, plasma reactor 800 includes reactor body 810, the second plasma power supply 820 and the second discharge part
830, in which: the second plasma power supply 820 is powered to the second discharge part 830, generates 830 surface of the second discharge part active
Free radical, free radical is by the lower valency nitrogen oxides being input in the flue gas in reactor body 810 at high-valence state nitrogen
Oxide.Furthermore, the second discharge part 830 includes block media and discharge electrode, and the second plasma power supply 820 is to electric discharge
Pole powers, and streamer-discahrge phenomenon is generated around discharge electrode, and block media stops streamer-discahrge and makes to generate around discharge electrode big
Measurer has the free radical of strong oxidizing property, the lower valency reaction of nitrogen oxides in free radical and flue gas, and is oxidized to high-valence state
Nitrogen oxides.
Step 204, high-valence state nitrogen oxides, mercury ion and the sulfur dioxide in desulfurization module collaboration removal flue gas, and
Remove the fine solid particle particle in flue gas.
In the present embodiment, desulfurization module 500 includes desulfurization ontology 510, lye circulated sprinkling device 520 and high efficiency demister
530, in which: 520 pairs of the lye circulated sprinkling device flue gases entered in desulfurization ontologies 510 carry out spray medical fluid with by the height in flue gas
Valence state nitrogen oxides, mercury ion and sulfur dioxide removal, high efficiency demister 530 will be after the sprays of lye circulated sprinkling device 520
The aerosol particle object of formation is removed from flue gas.
Optionally, the third output end 512 of desulfurization module 500 is connected with neat stress temperature rise heat exchanger 600, neat stress heating
Heat exchanger 600 is connected with chimney 900.After flue gas is exported out of desulfurization ontology 510, neat stress temperature rise heat exchanger 600 is to flue gas
Heating treatment is carried out, in order to which flue gas is spread in chimney 900.Furthermore, neat stress temperature rise heat exchanger 600 and chimney
900 are connected, in order to which the flue gas after will heat up is discharged into atmosphere by chimney 900.
In specific implementation, circulation is connected between former flue gas cool-down heat exchanger 200 and neat stress temperature rise heat exchanger 600
Pump 700.Specifically, former flue gas cool-down heat exchanger 200 absorbs 310 first input end of electric precipitator ontology by heat transferring medium of water
The heat of flue gas at 311 is with by flue gas cool-down, temperature is increased after water absorbs heat, and circulating pump 700 takes out the raised water of temperature
It takes to neat stress temperature rise heat exchanger 600, the higher water of temperature heats up to neat stress, to accelerate the diffusion of flue gas, water
Temperature reduces, then the water after being reduced temperature by circulating pump 700 extract in former flue gas cool-down heat exchanger 200 to cool down cigarette
Gas realizes the recycling of water with this, reduces the consumption of energy.
In conclusion removal methods provided by the embodiments of the present application, carry out preliminary denitration to flue gas by exhaust gas generator,
Flue gas is dusted by electric precipitator again and lower valency nitrogen oxides and mercury are subjected to primary oxidation, then is anti-by plasma
Device is answered further to aoxidize flue gas, in order to by the fully oxidized high-valence state nitrogen oxides of lower valency nitrogen oxides in flue gas, most
It is cooperateed with desulfurization module afterwards by the sulfur-containing oxide removing in high-valence state nitrogen oxides and mercury ion and flue gas, so that cigarette
Gas reaches discharge standard, convenient for discharging and not polluting atmosphere.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The instructions such as " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
Above is only a specific embodiment of the present invention, but technical characteristic of the invention is not limited thereto, Ren Heben
Within the field of the present invention, made changes or modifications all cover within the scope of the patent of the present invention the technical staff in field.
Claims (10)
1. a kind of lotus root closes oxidation NO cooperation-removal combined pollutant device, including for preliminary denitration exhaust gas generator, be used for
The electric precipitator and desulfurization module of dedusting, which is characterized in that further include the plasma reactor for aoxidizing NO, the electric precipitation
Device includes electric precipitator ontology, efficient power, the first plasma power supply and the first discharge part, and first discharge part is set to institute
It states in electric precipitator ontology, the efficient power and first plasma power supply are set on the electric precipitator ontology and divide
It is not connected with first discharge part, the exhaust gas generator is connected with the first input end of the electric precipitator ontology, described
Plasma reactor is connected with the first output end of the electric precipitator ontology, the desulfurization module and the plasma reactor
It is connected.
2. lotus root according to claim 1 closes oxidation NO cooperation-removal combined pollutant device, which is characterized in that described first
Discharge part includes the first discharge electrode and the second discharge electrode, and first discharge electrode and second discharge electrode are along first input
End to first output end is set in turn in the electric precipitator ontology, the efficient power and the first discharge electrode phase
Even, first plasma power supply is connected with second discharge electrode.
3. lotus root according to claim 2 closes oxidation NO cooperation-removal combined pollutant device, which is characterized in that described first
Discharge electrode and second discharge electrode are set gradually along the first input end to first output end.
4. lotus root according to claim 2 closes oxidation NO cooperation-removal combined pollutant device, which is characterized in that described efficient
Power supply is high frequency electric source；Alternatively, the efficient power is the pulse power；Alternatively, the efficient power is three phase mains.
5. lotus root according to claim 1 closes oxidation NO cooperation-removal combined pollutant device, which is characterized in that it is described it is equal from
Sub- reactor includes reactor body, the second plasma power supply and the second discharge part, the second input terminal of the reactor body
It is connected with the first output end of the electric precipitator ontology, the second output terminal of the reactor body and the desulfurization module phase
Even, second discharge part is set in the reactor body, second plasma power supply and the second discharge part phase
Even.
6. lotus root according to claim 1 closes oxidation NO cooperation-removal combined pollutant device, which is characterized in that the desulfurization
Component includes desulfurization ontology, for absorbing the high-valence state nitrogen oxidation after the electric precipitator and plasma reactor oxidation
The lye circulated sprinkling device of object and high efficiency demister for trapping the particulate matters such as aerosol, the desulfurization ontology are equipped with third
Input terminal and third output end, the third input terminal are connected with the plasma reactor, the lye circulated sprinkling device and
The high efficiency demister is all set in the desulfurization body interior, and the third output end, the high efficiency demister, the alkali
Liquid circulated sprinkling device and the third input terminal are set gradually from top to bottom along the desulfurization ontology.
7. lotus root according to claim 6 closes oxidation NO cooperation-removal combined pollutant device, which is characterized in that the exhaust gas
Between generator and the first input end by original flue gas cool-down heat exchanger be connected, the third output end of the desulfurization module and
The neat stress temperature rise heat exchanger is connected, and is connected with and follows between the original flue gas cool-down heat exchanger and the neat stress temperature rise heat exchanger
Ring pump.
8. the removal methods that a kind of lotus root closes oxidation NO cooperation-removal combined pollutant, which is characterized in that be applied to such as claim 1
The lotus root is closed in oxidation NO cooperation-removal combined pollutant device, and the removal methods include:
Lower valency nitrogen oxides in flue gas is reduced into nitrogen by the exhaust gas generator；
The electric precipitator cooperates the first discharge part to remove the dust particle in flue gas by efficient power, then passes through first etc.
Ion power supply cooperates the first discharge part by the lower valency nitrogen oxides in flue gas at high-valence state nitrogen oxides, and by mercury oxidation
At mercury ion；
The plasma reactor is by the lower valency nitrogen oxides in the flue gas after electric precipitator oxidation at high price
State nitrogen oxides；
High-valence state nitrogen oxides, mercury ion and sulfur dioxide in the desulfurization module collaboration removal flue gas, and remove flue gas
In fine solid particle particle.
9. the removal methods that lotus root according to claim 8 closes oxidation NO cooperation-removal combined pollutant, which is characterized in that institute
Stating plasma reactor includes reactor body, the second plasma power supply and the second discharge part, and the plasma reactor will be through
Lower valency nitrogen oxides in flue gas after electric precipitator oxidation include: described second etc. at high-valence state nitrogen oxides
Ion power supply is powered to the second discharge part, and the second discharge part surface is made to generate active free radical, and the free radical will be defeated
Enter the lower valency nitrogen oxides into the flue gas in the reactor body into high-valence state nitrogen oxides.
10. lotus root according to claim 8 closes oxidation NO cooperation-removal composite pollutant removing method, which is characterized in that institute
Stating desulfurization module includes desulfurization ontology, lye circulated sprinkling device and high efficiency demister, the height in the desulfurization module removal flue gas
Valence state nitrogen oxides, mercury ion and sulfur dioxide, and removing the fine solid particle particle in flue gas includes: the lye circulation spray
Leaching device into the intrinsic flue gas of the desulfurization carry out spray medical fluid with by flue gas high-valence state nitrogen oxides, mercury ion with
And sulfur dioxide removal, the high efficiency demister by after the lye circulated sprinkling device spray aerosol particle object that is formed from
It is removed in flue gas.
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| CN111905565A (en) * | 2020-07-14 | 2020-11-10 | 杭州中荷环保科技有限公司 | Plasma co-processing device and processing method for waste gas of kerosene engine |
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