CN110252102A - A kind of width load method of denitration and device - Google Patents
A kind of width load method of denitration and device Download PDFInfo
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- CN110252102A CN110252102A CN201910640858.7A CN201910640858A CN110252102A CN 110252102 A CN110252102 A CN 110252102A CN 201910640858 A CN201910640858 A CN 201910640858A CN 110252102 A CN110252102 A CN 110252102A
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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
- B01D53/32—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
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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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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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
- B01D53/76—Gas phase processes, e.g. by using aerosols
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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
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/102—Oxygen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
Abstract
The invention discloses a kind of wide load method of denitration and device, this method is that will contain NOXFlue gas be passed through in reaction of low temperature plasma device, Xiang Hanyou NOXFlue gas in add O2, add O2Afterwards, O2Volume fraction be 3%~10%, using plasma technology makes gas react in low-temperature plasma device, obtains N2、NO2、N2O5, obtained NO2、N2O5It is passed through in absorption plant to react with water and generates HNO3、HNO2And remove, purified flue gas is discharged into atmosphere by chimney.The inventive system comprises: gas delivery system, flue gas discharge continuous monitoring system, reaction of low temperature plasma device, absorption plant.Using methods and apparatus of the present invention, the NO under wide load can be realizedXMinimum discharge solves SCR denitration system under coal-burning power plant's underload and is unable to operate normally, NOXDischarge excessive problem；It simultaneously can be to avoid air preheater blocking and corrosion and air-introduced machine overload operation problem.
Description
Technical field
The invention belongs to environmental technology field more particularly to a kind of wide load method of denitration and device.
Background technique
It is required according to national three ministries and commissions " implementing in full coal-burning power plant's minimum discharge and reducing energy consumption programme of work ", to 2020
Year 300000 kilowatts of the whole nation and the above Thermal generation unit need to realize minimum discharge, and discharged nitrous oxides concentration is not higher than 50mg/
Nm3。
Selective catalytic reduction (SCR) technology is current widely used denitration technology, and principle is in catalyst
Under the action of, with NH3For reducing agent, preferentially with the NO in flue gasXReduction generates nitrogen and water.The optimal reaction temperature of SCR device
It is 300 DEG C~400 DEG C, in order to meet temperature requirement, SCR reactor is all set to boiler economizer outlet and air preheat at present
Between device entrance.
But fired power generating unit universal rate of load condensate in the country's is not high at present, and unit is chronically at underrun.At boiler controller system
When underload, denitrification apparatus entrance flue gas temperature is lower than the normal use temperature of catalyst, causes SCR denitration system can not be just
Often operation, the environmental issues such as cause blowdown exceeded.NH simultaneously3It can be with the SO in flue gas3Reaction generates ammonium hydrogen sulfate and is precipitated, and leads
Cause air preheater blocking and seriously corroded, air-introduced machine overload operation.According to the investigation to Guangdong Province's coal unit denitrification apparatus,
2014 units of annual 1 every year because flue-gas temperature it is low caused by denitrating system it is out of service when be up to 219h, seriously affect machine
The normal operation of group.
208566725 U of CN discloses a kind of wide load denitrification apparatus, including two-stage economizer, level-one economizer arrangement
In the outlet of denitrification apparatus, second level economizer is arranged in the entrance of denitrification apparatus.By the way that the other pipeline of second level economizer is opened
And the working medium flow for flowing through second level economizer is adjusted by the working medium flow of adjusting bypass conduit, promote the denitration in grid-connected stage
Inlet flue gas temperature.But the technology not can effectively solve under underload denitrating system there are the problem of, and system flow is complicated.Therefore wide
The exploitation of load denitration technology has important environmental and social benefits.
Summary of the invention
The object of the present invention is to provide a kind of wide load method of denitration and devices, utilize methods and apparatus of the present invention, energy
Enough NO realized under wide loadXMinimum discharge solves SCR denitration system under coal-burning power plant's underload and is unable to run, NOXDischarge is super
Mark problem；It simultaneously can be to avoid air preheater blocking and corrosion and air-introduced machine overload operation problem.
To solve the above problems, the technical solution of the present invention is as follows:
A kind of width load method of denitration, will contain NOXFlue gas be passed through in reaction of low temperature plasma device, Xiang Hanyou NOX
Flue gas in add O2, add O2Afterwards, O2Volume fraction be 3%~10%, using plasma technology makes gas in low temperature etc.
It reacts in ion body device, obtains N2、NO2、N2O5, obtained NO2、N2O5It is passed through in absorption plant and reacts generation with water
HNO3、HNO2And remove, purified flue gas is discharged into atmosphere by chimney；
Wherein, NOXIn X be 1 or 2.
Preferably, containing NOXFlue gas in add H2O, H after addition2The volume fraction of O is 1%~10%；
Further, H is added2After O, H2The volume fraction of O is 1%~3%.
Preferably, containing NOXFlue gas in add NH3, so that NH3And NOXMolal weight ratio be 1~2；
Further, NH3And NOXMolal weight ratio be 1~1.5.
Preferably, the power of the low-temperature plasma electrical source in the low-temperature plasma device is 1~40W/Nm3, into
One step, the power of the low-temperature plasma electrical source is 1~5W/Nm3。
The present invention also provides a kind of wide load denitrification apparatus, comprising: gas delivery system, the first flue gas emission are continuously supervised
Examining system, reaction of low temperature plasma device, the second flue gas discharge continuous monitoring system, absorption plant；
Wherein, flue gas is entered in the reaction of low temperature plasma device through the gas delivery system and is reacted,
Gas after reaction, which enters in the absorption plant, to be discharged into atmosphere after progress concerted reaction by chimney；
The first flue gas row is provided with after the gas delivery system, before the reaction of low temperature plasma device
Put continuous monitor system；
Second flue gas discharge continuous monitoring system is provided with after the absorption plant；
The gas delivery system includes O2Air accumulator, and the O2The mating setting control valve of air accumulator, pressure reducing valve and stream
Meter, the O2Air accumulator is connect through pipeline with the reaction of low temperature plasma device.
Preferably, the gas delivery system further includes H2O air accumulator, NH3Air accumulator, each mating setting control of air accumulator
Valve, pressure reducing valve and flowmeter processed；
The H2O air accumulator, the NH3Air accumulator is connect through pipeline with the reaction of low temperature plasma device.
Preferably, the absorption plant is wet desulphurization device or semidry process desulfurizer.
Preferably, the reaction of low temperature plasma device includes reaction of low temperature plasma device ontology, plasma hair
Raw device, plasma electrical source and oscillograph, the plasma generator are arranged in the reaction of low temperature plasma device ontology
Interior, the plasma electrical source is electrically connected with the plasma generator, the oscillograph and the plasma electrical source and
The plasma generator electrical connection, the oscillograph are used to detect the energy input of the plasma generator.
Preferably, the plasma generator structure is spool formula or line is board-like or plate is board-like.
The present invention due to using the technology described above, makes it have the following advantages that and actively imitate compared with prior art
Fruit:
(1) using plasma reaction unit and absorption plant of the present invention, completely instead of existing SCR denitration system,
By adding oxygen into plasma device, the oxygen purity after addition is 3%~10%, and oxygen molecule is made to be excited
Activation generates O, and the NO100% in flue gas is completely oxidized to NO2、N2O5, then NO will be oxidized to by absorption plant2、
N2O5Be converted into nitric acid and nitrous acid, finally by purified flue gas emission into atmosphere.Therefore the technology of the present invention effectively solves
Under coal-burning power plant's underload SCR denitration system be unable to operate normally, NOx emission excessive problem；It simultaneously can be to avoid air preheater
Blocking and corrosion and air-introduced machine overload operation problem, have environmental and social benefits outstanding.
(2) the method for the present invention is not influenced compared with traditional SCR denitration technology by unit load and flue-gas temperature, and de-
Nitre efficiency is up to 90% or more, NOXConcentration of emission minimum can be down to 20mg/Nm3, much meet thermal power plant's minimum discharge standard.
(3) present invention uses lower temperature plasma technology, so that gas molecule is excited and activates generation O, OH, HO2·、
H·、NH·、NH2Deng the free radical with Strong oxdiative reproducibility, NOx pollutant is effectively removed, realizes the effect of depth denitration
Fruit.Present system process is simple, easy to operate, applied widely.
Detailed description of the invention
Fig. 1 is the wide load denitrification apparatus structural schematic diagram of the embodiment of the present invention 2；
Fig. 2 is the wide load denitrification apparatus structural schematic diagram of the embodiment of the present invention 3
Description of symbols: 1- reaction of low temperature plasma device；2-O2Air accumulator；3-H2O air accumulator；4-NH3Gas storage
Tank；5- control valve；6- pressure reducing valve；7- flowmeter；The first flue gas discharge continuous monitoring system of 8-；9- wet desulphurization device；10-
Semidry process desulfurizer；11- reaction of low temperature plasma device ontology；12- plasma generator；13- plasma electrical source；
14- oscillograph；The second flue gas discharge continuous monitoring system of 15-.
Specific embodiment
A kind of wide load method of denitration proposed by the present invention and device are made into one below in conjunction with the drawings and specific embodiments
Step is described in detail.According to following explanation and claims, advantages and features of the invention will be become apparent from.
Embodiment 1
The present embodiment 1 provides a kind of wide load method of denitration, will contain NOXFlue gas be passed through reaction of low temperature plasma
In device, Xiang Hanyou NOXFlue gas in add preset ratio O2, using plasma technology makes gas in low temperature plasma
It reacts in device, obtains N2、NO2、N2O5, obtained NO2、N2O5It is passed through in absorption plant to react with water and generates HNO3、HNO2
And remove, purified flue gas is discharged into atmosphere by chimney；
Wherein, NOXIn X be 1 or 2.
NOXTransformation efficiency it is related with the plasma electrical source power in low-temperature plasma device, preferably, low temperature etc.
Plasma electrical source power in ion body device is 1~40W/Nm3, preferably 1~5W/Nm3。
NO in boiler smokeXMainly by NO and NO2Composition, wherein NO accounts for NOX95% or more of total amount is its main component,
Therefore NOXStudy on treatment technology mainly for NO.
When flue gas main component is N2, NO when, following reaction occurs in reaction of low temperature plasma device:
e+N2→e+N+N (1a)
e+N2→e+N(2D)+N (1b)
N(2D)+N2→N+N2 (1c)
N(2D)+NO→N2+O (2a)
N+NO→N2+O (2b)
NO+O+M→NO2+M (3)
NO a part is oxidized to NO2, a part is reduced into N2, but the NO generated2It is unstable, it can be reduced into again
NO influences denitration efficiency.Therefore O is added in flue gas2, flue gas addition O2Afterwards, O2Volume fraction be 3%~10%, O2Low
It is excited in isothermal plasma reaction unit and generates O free radical, due to the strong oxidizing property of free radical, NO quilt can be made
100% is oxidized to the nitrogen oxides NO of high-valence state2、N2O5, enter back into absorption plant and react and remove with water, to effectively disappear
Except NOXPollutant, reaction equation are as follows:
e+O2→e+O(1D)+O (4a)
O(1D)+M→O+M (4b)
NO+O+M→NO2+M (3)
O+O2+M→O3+M (5)
NO+O3→NO2+O2 (6)
The net reaction of reaction 3,5,6: NO+O → NO2 (3+5+6)
NO、NO2Can also further it be oxidized:
NO2+O+M→NO3+M (7)
NO+NO3→2NO2 (8)
NO2+O3→NO3+O2 (9)
NO2+NO3+M→N2O5+M (10)
Oxygen purity cannot make NO convert N completely less than 3%2O5, after oxygen purity is greater than 10%, have
Extra waste of oxygen is fallen, it is contemplated that saves, in the case where not wasting, oxygen purity is further excellent less than or equal to 10%
Be selected as 3%~6%, under preferably plasma electrical source power and other gas interactions, oxygen purity have one it is excellent
Select range.
Further, while in flue gas H is added2O, H after addition2O volume fraction is 1%~10%, limits water herein
Adding proportion reason is as the range of above-mentioned limitation oxygen, and more a step is preferably 1%~3%.H2O is in low temperature plasma
It is excited in reaction unit and generates OH, H free radical, the NO that NO is generated by O oxidation2、N2O5, aoxidized and give birth to by OH, H
At HNO2、HNO3, can also assist oxygen that NO is directly oxidized to HNO3.Further, being passed through the collaboration of rear end absorption plant makes
With NO, NO2It is all removed by reactive absorption, to effectively eliminate NO pollutant.Reaction equation is as follows:
e+H2O→e+OH+H (11)
O(1D)+H2O→2OH (12)
OH+NO+M→HNO2+M (13)
OH+NO2+M→HNO3+M (14)
H+O2+M→HO2+M (15)
HO2+NO→NO2+OH (16)
The net reaction of reaction 13,14,15,16:
H+O2+NO→HNO3 (13+14+15+16)
N2O5+H2O→2HNO3 (17)
Further, while in flue gas NH is added3, the NH is made after addition3And NOXMolar ratio be 1~2,
Further preferably 1~1.5, NH3It is excited in reaction of low temperature plasma device and generates NH, NH2Free radical, so that
A part of NO is directly reduced into harmless N2.Reaction equation is as follows:
e+NH3→e+H2+NH (18a)
e+NH3→e+H+NH2 (18b)
NO+NH2→H2O+N2 (19)
NO+NH→OH+N2 (20)
In above-mentioned reaction equation, M is a small amount of metal in flue gas, N (2D) and O (1It D) is excitation state.
The present embodiment uses lower temperature plasma technology, so that gas molecule is excited and activates generation O, OH, HO2·、
H·、NH·、NH2Deng the free radical with Strong oxdiative reproducibility, make nitrogen oxides that oxidation reaction or reduction reaction occur, obtains
To N2、NO2、N2O5, NO2、N2O5It enters to react in absorption plant with water and generates HNO3、HNO2And it removes, therefore the present embodiment energy
Enough effectively remove NOXPollutant realizes the effect of depth denitration.In addition O2H is further added afterwards2O and NH3, it is because of rear two
Kind gas can reduce NO after being passed through in advanceXConcentration mitigates the processing load of rear end absorption plant, preferably reaches NOXRemoval
Effect.This method can control O according to the load condition and flue gas composition of unit2、H2O、NH3Adding proportion, meet NOXIt is super
Low emission.
Method provided in this embodiment is not influenced compared with traditional SCR denitration method by unit load and flue-gas temperature,
And denitration efficiency up to 90% or more (cooperation of oxygen gas and water and the mixed gas of ammonia can convert main harmful NO,
But 100% it is converted to nitric acid and nitrous acid after cannot be guaranteed, therefore described denitration efficiency is less than 100%) herein, NOXRow
Putting concentration minimum can be down to 20mg/Nm3, much meet thermal power plant's minimum discharge standard.
Embodiment 2
Referring to Fig. 1, a kind of wide load denitrification apparatus is present embodiments provided, comprising: gas delivery system, the first flue gas row
Continuous monitor system 8, reaction of low temperature plasma device 1, the second flue gas discharge continuous monitoring system 15, absorption plant are put, this
Embodiment absorption plant uses wet desulphurization device 9；
Wherein, flue gas is entered in reaction of low temperature plasma device 1 through gas delivery system and is reacted, after reaction
Gas, which enters in wet desulphurization device 9, to be discharged into atmosphere after progress concerted reaction by chimney；
The first fume emission continuous monitoring is provided with after gas delivery system, before reaction of low temperature plasma device 1
System 8, absorption plant are provided with the second flue gas discharge continuous monitoring system 15 later；
Gas delivery system includes O2Air accumulator 2, and O2The mating setting control valve 5 of air accumulator 2, pressure reducing valve 6 and flowmeter
7, O2Air accumulator 2 is connect through pipeline with reaction of low temperature plasma device 1；
The tower inner circumferential side of wet desulphurization device 9 is provided with nozzle, is used for injection desulfurization slurries, wet desulphurization device 9 one
It is for providing the reaction environment of free water, for cooperateing with the NO for absorbing removal reaction of low temperature plasma device 1 and generating2、
N2O5, finally realize NOXMinimum discharge, second is that for removal to the sulfur compound in flue gas.
The present embodiment uses reaction of low temperature plasma device 1, O2Holding vessel 2 and wet desulphurization device 9, completely instead of
Existing SCR denitration system, can be by the NO in flue gasXIt completely eliminates, while the sulfur compound in flue gas can be removed, finally
By purified flue gas emission into atmosphere.The device of the present embodiment is simple, it is only necessary to reaction of low temperature plasma device 1, O2
Holding vessel 2 and wet desulphurization device 9 can completely remove the NO in flue gas.Therefore the present embodiment technology efficiently solves
Under coal-burning power plant's underload SCR denitration system be unable to operate normally, NOXDischarge excessive problem；It simultaneously can be stifled to avoid air preheater
Plug and corrosion and air-introduced machine overload operation problem, have environmental and social benefits outstanding.
Gas delivery system further includes H2O air accumulator 3, NH3Air accumulator 4, the mating setting control valve 5 of each air accumulator subtract
Pressure valve 6 and flowmeter 7, H2O air accumulator 3, NH3Air accumulator 4 is connect through pipeline with reaction of low temperature plasma device 1.
O2、H2O、NH3Transportation system is respectively arranged with control valve 5, pressure reducing valve 6 and flowmeter 7, can be according to unit
O appropriate is added in load condition and flue gas composition, selection2、H2O、NH3Flow is meeting NOXIn the premise of minimum discharge, carry out
The optimal optimization design of system, while guaranteeing the high efficiency and economy of technical solution, there is stronger flexibility.
8 monitoring project of flue gas discharge continuous monitoring system includes NOXContent, O2Content, H2O content, N2Content, with monitoring
NOXRemoval effect.
Reaction of low temperature plasma device 1 include reaction of low temperature plasma device ontology 11, plasma generator 12, etc.
Gas ions power supply 13 and oscillograph 14.Plasma generator 12 is arranged inside reaction of low temperature plasma device ontology 11, etc.
Plasma generator 12 is mainly used for ionized gas and generates free radicals, discharge type be chosen as streamer-discahrge low temperature plasma or
Dielectric barrier discharge low-temperature plasma, structure is chosen as spool formula or line is board-like or plate is board-like.Plasma electrical source 13 with etc.
Plasma generator 12 is electrically connected, and plasma electrical source 13 is that plasma generator 12 provides ionizing energy, and form is chosen as height
DC power supply or high-voltage pulse power source or alternating current-direct current is pressed to be superimposed streamer-discahrge power supply.Plasma generator 12 and plasma electricity
Oscillograph 14 is provided between source 13, for detecting the energy input of plasma generator 12.
Embodiment 3
With reference to Fig. 2, this embodiment differs from embodiment 1 in that: in the present embodiment, absorption plant is de- using semidry method
Sulphur device 10, the interior only top of the tower of semidry process desulfurizer 10 are provided with nozzle, are used for injection desulfurization slurries, semi-dry desulphurization
Device 10 absorbs the removal generation of reaction of low temperature plasma device 1 first is that for providing the reaction environment of free water for cooperateing with
NO2、N2O5, finally realize NOXMinimum discharge, second is that for removal to the sulfur compound in flue gas.
In conclusion methods and apparatus of the present invention using plasma technology is completely instead of traditional SCR denitration technology,
It compared with traditional SCR denitration technology, is not influenced by unit load and flue-gas temperature, and denitration efficiency is up to 90% or more, NOx
Concentration of emission minimum can be down to 20mg/Nm3, much meet coal-burning power plant's minimum discharge standard.The technology of the present invention process is simple, behaviour
Facilitate, it is applied widely.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode.Even if to the present invention, various changes can be made, if these variations belong to the model of the claims in the present invention and its equivalent technologies
Within enclosing, then still fall within the protection scope of the present invention.
Claims (9)
1. a kind of width load method of denitration, which is characterized in that NO will be containedXFlue gas be passed through in reaction of low temperature plasma device,
To containing NOXFlue gas in add O2, add O2Afterwards, O2Volume fraction be 3%~10%, using plasma technology makes gas
Body reacts in low-temperature plasma device, obtains N2、NO2、N2O5, obtained NO2、N2O5It is passed through in absorption plant and water
Reaction generates HNO3、HNO2And remove, purified flue gas is discharged into atmosphere by chimney；
Wherein, NOXIn X be 1,2.
2. width load method of denitration according to claim 1, which is characterized in that containing NOXFlue gas in add H2O adds
Add rear H2The volume fraction of O is 1%~10%.
3. width load method of denitration according to claim 1 or 2, which is characterized in that containing NOXFlue gas in add
NH3, so that NH3And NOXMolar ratio be 1~2.
4. width load method of denitration according to claim 1, which is characterized in that low in the low-temperature plasma device
The power of isothermal plasma power supply is 1~40W/Nm3。
5. a kind of width load denitrification apparatus characterized by comprising gas delivery system, the first fume emission continuous monitoring system
System, reaction of low temperature plasma device, the second flue gas discharge continuous monitoring system, absorption plant；
Wherein, flue gas is entered in the reaction of low temperature plasma device through the gas delivery system and is reacted, reaction
Gas afterwards, which enters in the absorption plant, to be discharged into atmosphere after progress concerted reaction by chimney；
First flue gas emission is provided with after the gas delivery system, before the reaction of low temperature plasma device to connect
Continuous monitoring system；
Second flue gas discharge continuous monitoring system is provided with after the absorption plant；
The gas delivery system includes O2Air accumulator, and the O2The mating setting control valve of air accumulator, pressure reducing valve, flowmeter,
The O2Air accumulator is connect through pipeline with the reaction of low temperature plasma device.
6. width load denitrification apparatus according to claim 5, which is characterized in that the gas delivery system further includes H2O storage
Gas tank, NH3Air accumulator, the mating setting control valve of each air accumulator, pressure reducing valve and flowmeter；
The H2O air accumulator, the NH3Air accumulator is connect through pipeline with the reaction of low temperature plasma device.
7. width load denitrification apparatus according to claim 5, which is characterized in that the absorption plant is wet desulphurization device
Or semidry process desulfurizer.
8. width load denitrification apparatus according to claim 5, which is characterized in that the reaction of low temperature plasma device packet
Include reaction of low temperature plasma device ontology, plasma generator, plasma electrical source and oscillograph；
The plasma generator is arranged in the reaction of low temperature plasma device ontology, the plasma electrical source and institute
Plasma generator electrical connection is stated, the oscillograph is electrically connected with the plasma electrical source and the plasma generator
It connects, the oscillograph is used to detect the energy input of the plasma generator.
9. the wide load denitrification apparatus according to claim 5, which is characterized in that the plasma generator knot
Structure is spool formula or line is board-like or plate is board-like.
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| CN113318578A (en) * | 2021-05-26 | 2021-08-31 | 江苏大学 | Flue gas treatment system and method based on gas-liquid mixed phase discharge plasma |
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