CN109173662A - The ozone distributor and its arrangement and purposes of a kind of subregion oxidation - Google Patents
The ozone distributor and its arrangement and purposes of a kind of subregion oxidation Download PDFInfo
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- CN109173662A CN109173662A CN201811124113.7A CN201811124113A CN109173662A CN 109173662 A CN109173662 A CN 109173662A CN 201811124113 A CN201811124113 A CN 201811124113A CN 109173662 A CN109173662 A CN 109173662A
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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
- B01D53/46—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
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
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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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Abstract
The present invention provides a kind of ozone distributor of subregion oxidation and its arrangement and purposes, the ozone distributor includes ozone distributor main body and ozone transport conduit, the ozone distributor main body is multiple distributed areas by partition longitudinal subdivision, the corresponding one group of ozone transport conduit in each distributed areas, the ozone transport conduit are set to one end of ozone distributor main body.Ozone distributor provided by the invention is divided into multiple oxide regions, in ozone and NOxUnder the conditions of population proportion is lower, realize that ozone part is excessive, orientation improves easily absorbed N in oxidation product2O5Proportion improves the denitration efficiency of flue gas；Simultaneously the unreacted ozone in part can be eliminated by the mixing of each distributed areas flue gas；The ozone distributor designs are simple, strong operability, effectively reduce the cost of denitration technology, engineering is with the obvious advantage, is suitble to be widely applied in oxidation-absorption denitration technology.
Description
Technical field
The invention belongs to gas purification technique field, be related to a kind of subregion oxidation ozone distributor and its arrangement and
Purposes.
Background technique
Nitrogen oxides (NOx) it is a kind of main atmosphere pollution, it is to form acid rain, photochemical fog and PM2.5Pollution
One of principal element.Currently, China industrial source NOxDischarge accounts for NOx70% or more of total emission volumn, NO in industrial smokexControl
Draining technology processed mainly includes selective catalytic reduction (SCR), activated carbon adsorption catalysis method and oxidation-absorption method.Wherein,
SCR is widely used in coal-burning power plant's denitration, needs 300~400 DEG C of temperature window, NOxIn catalyst and NH3Under the action of also
It originally is N2, denitration efficiency is up to 90% or more；Activated carbon adsorption catalysis method utilizes absorption/catalytic action of active carbon, using temperature
Degree sprays NH at 200 DEG C or so3Under the conditions of denitration efficiency about 50~70%；However, in low-temperature denitration field, SCR is needed to flue gas
Heating, activated carbon technology higher cost.
The NO for being insoluble in water is oxidized to high-valence state NO by spraying into ozone by oxidation-absorption denitration technologyxDesulfurization is utilized afterwards
Device and SO2Common removing.Compared to SCR and activated carbon adsorption catalysis technique, oxidation-absorption technology can utilize existing desulfurization
Facility simultaneous SO_2 and NO removal, cost is relatively low, and there is no denitration efficiency with runing time extension be gradually reduced the problem of.Mesh
Before, with LoTOx- EDV technology is that the oxidation-absorption denitration technology of representative is widely used to the catalytic cracked regenerated cigarette of petrochemical industry
Gas, the technology are to combine low-temperature oxidation denitration technology and wet scrubbing desulfurization technology and formed, the key of the technology denitration
It is to use ozone by NOxIt is oxidized to the N easily absorbed2O5, NO is then realized by EDV wash millxEfficient absorption.LoTOx-
EDV technology realizes that higher denitration efficiency needs to consume a large amount of ozone, generally by ozone and NOxRatio is controlled 1.5 or more.No
Flue gas NO of the same tradexDischarge characteristics have significant difference, even if many industries reach most stringent of NOxDischarge standard also and is not required to
Realize 90% or more denitration efficiency.And if reducing ozone and NOxRatio, N in oxidation product2O5Proportion can decline,
But NO2Relative to N2O5It is difficult to absorb, it is possible that the result that denitration efficiency declines to a great extent.Therefore, it needs to find at present both may be used
Ozone usage amount is reduced, and the technological means of higher denitration efficiency can be maintained.
105854554 A of CN discloses a kind of ozone low-temperature oxidation denitrating system, including flue, ozone generator, washing
Tower, ozone distributor is installed in the flue, is sprayed ozone in flue by ozone distributor, the ozone in flue
Enter in scrubbing tower with flue gas mixed gas, wherein ozone distributor is made of several ozone injection units, forms lattice-shaped knot
Structure.105854547 A of CN discloses a kind of ammonia process oxidation and denitration technique, by ozone oxidation, hydrogen peroxide oxidation and ammonia absorption into
The organic ordered combination of row is handled the NO_x Reduction by Effective of flue gas to realize.It is smelly that 103816784 A of CN discloses a kind of flue
Oxygen distribution device, the flue ozone distributor include distribution supervisor, multiple distribution arms and multiple venturi distributors；Multiple points
Cloth branch pipe is drawn from the different longitudinal section parallel branch of distribution supervisor, is staggeredly arranged；Multiple venturi distributors are in distribution arms
The symmetrical interlaced arrangement in two sides；Flue ozone distributor is set in the leading portion flue of absorption tower.Ozone distributor in above-mentioned patent
Setting is primarily to promote ozone to mix with flue gas, but be not directed to the ratio of ozone and flue gas, general ozone disappears
Consumption is larger, the evolution and waste of extra ozone is caused, if being adjustable ozone and NOxRatio so that different industries flue gas have
There is suitable denitrification rate, can effectively reduce oxidation-absorption denitration technology cost effectiveness.
In conclusion the design of ozone distributor also needs to make improvements, to adjust NOxThe generation ratio of specific oxidation product
Example optimizes oxidizing and denitrating ozone technique.
Summary of the invention
In view of the problems of the existing technology, the purpose of the present invention is to provide a kind of subregion oxidation ozone distributor and
Its arrangement and purposes, ozone distributor provided by the invention have multiple regions, are NOxIt is empty that multiple reactions are created in oxidation
Between, convenient for adjusting ozone and NO in different zonesxRatio, thus orient improve oxidation product in N2O5Proportion improves cigarette
The cost effectiveness of oxidation-absorption denitration technology is effectively reduced in gas denitration efficiency.
To achieve this purpose, the present invention adopts the following technical scheme:
In a first aspect, the ozone distributor includes ozone the present invention provides a kind of ozone distributor of subregion oxidation
Distributor main body and ozone transport conduit, the ozone distributor main body are multiple distributed areas by partition longitudinal subdivision, each
Distributed areas correspond to one group of ozone transport conduit, and the ozone transport conduit is set to one end of ozone distributor main body.
In the present invention, ozone and NOxReaction principle it is as follows:
NO+O3=NO2+O2 (1)
NO2+O3=NO3+O2 (2)
NO2+NO3=N2O5 (3)
Wherein, the reaction rate of formula (1) be much higher than formula (2) reaction rate, i.e., in certain reaction compartment, ozone and
The reaction of NO is very rapid, when NO is not fully converted to NO2Before, ozone will not continue to and NO2It reacts, will not obtain
To further oxidation product N2O5；And working as ozone with NO molar ratio is more than 1:1, excessive ozone and NO2By formula (2) into one
Step reaction generates NO3, the reaction rate of same up-to-date style (3) is equally much higher than formula (2), once therefore NO3Generate, i.e., with it is already present
NO2Reaction obtains N2O5.Due to N2O5Compared with NO2It is easy to absorb, orientation improves N2O5Generation ratio, help to improve denitrating flue gas
Efficiency, and oxidation-absorption denitration technology cost effectiveness is reduced, it also needs to make ozone and NOxMolar ratio it is lower.
Therefore, the present invention proposes ozone distributor main body being divided into multiple oxide regions, is NOxOxidation create it is multiple anti-
Space is answered, different zones ozone dosage is different, in ozone and NOxOzone part mistake can be achieved under the conditions of population proportion is lower
Amount, the excessive region of ozone produces desirable oxidation product N2O5, the flue gas mixing of different zones later, ozone also can be with pole
The fast rate NO not oxidized with other regions, which reacts, generates NO2, raising can be both oriented while reducing ozone usage amount
N2O5Generation ratio, save the cost under the premise of guaranteeing certain denitration efficiency, but can eliminate ozone spilling, improve NOxIt is whole
Body degree of oxidation.
It is used as currently preferred technical solution below, but not as the limitation of technical solution provided by the invention, passes through
Following technical scheme can preferably reach and realize technical purpose and beneficial effect of the invention.
As currently preferred technical solution, the quantity of the distributed areas is at least 2, for example, 2,3,4,
5 or 6 etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable, preferably
It is 2~5.
In the present invention, to realize subregion oxidation, the oxide regions that ozone distributor main body has at least are 2, improve oxygen
The quantity for changing region can reduce the difficulty of flue gas mixing after subregion oxidation, but subregion excessively will lead to construction cost raising, and right
Effect is promoted without further substantially in oxidation, mixed process, therefore is preferably 2~5 according to flue gas actual conditions oxide regions
It is a.
As currently preferred technical solution, one group of ozone transport conduit includes a conveying supervisor and multiple conveyings branch
Pipe.
As currently preferred technical solution, the conveying supervisor is equipped with flow regulator.
Distance phase as currently preferred technical solution, in same group of ozone transport conduit between adjacent conveyor branch pipe
Deng.
Preferably, the delivery branch pipe is equipped with nozzle.
Preferably, the nozzle opening is towards the inside of ozone distributor.
Preferably, the nozzle is set in qually spaced in delivery branch pipe.
In the present invention, the ozone amount of different region additions is different, therefore its ozone transport conduit is respectively separately provided, and
It is respectively provided with flow regulator on conveying supervisor, in order to adjust the additional amount of ozone；In order to make ozone be uniformly distributed in cigarette
In gas, it is convenient for and NOxFull and uniform contact, delivery branch pipe are uniformly arranged, and spacing is identical, and the nozzle in delivery branch pipe is also equidistant
Setting.
As currently preferred technical solution, NO in the ozone and flue gas that the ozone distributor is passed throughxMolar ratio
For (0.5~1.3): 1, such as 0.5:1,0.6:1,0.7:1,0.8:1,0.9:1,1:1,1.1:1,1.2:1 or 1.3:1 etc., but
It is not limited in cited numerical value, other unlisted numerical value are equally applicable in the numberical range.
Preferably, ozone and NO in single distributed areasxMolar ratio be (0~2): 1, for example, 0:1,0.1:1,0.3:1,
0.5:1,0.8:1,1:1,1.2:1,1.5:1,1.8:1 or 2:1 etc., it is not limited to cited numerical value, the numberical range
Other interior unlisted numerical value are equally applicable, preferably (0.3~1.5): 1.
In the present invention, ozone and NOxDenitration degree, the kind of flue gas reached required by the selection of molar ratio and flue gas
NO in class, flue gasxContent and difference NOxThe factors such as composition it is related, but must assure that a certain region ozone is excessive, be allowed to
Produce desirable oxidation product N2O5, while by NO when being not higher than single oxide regionsxAll it is oxidized to N2O5It is minimum needed for theory
Ozone amount.
As currently preferred technical solution, ozone and NO in the ozone distributorxReaction temperature be 60~120
DEG C, such as 60 DEG C, 70 DEG C, 80 DEG C, 90 DEG C, 100 DEG C, 110 DEG C or 120 DEG C etc., it is not limited to cited numerical value, the number
It is equally applicable to be worth other unlisted numerical value in range, preferably 60~90 DEG C.
(60~200 DEG C), NO within the scope of general flue-gas temperature2It is sufficiently stable, N2O5It is then relatively easy to decompose, decompose
Journey is as follows:
N2O5=NO2+NO3 (4)
2NO3=2NO2+O2 (5)
NO3=NO+O2 (6)
Wherein, N2O5It is decomposed by formula (4), decomposition product NO3Continue to be decomposed into NO by formula (5) or formula (6) respectively2Or
NO, it is therefore desirable to by NOxOxidation reaction control reduces N in suitable temperature range, such as of the invention 60~120 DEG C2O5Point
Solution first suitably cools down flue gas before such as mixing with ozone to reduce the consumption of ozone.
Preferably, in the ozone distributor gas residence time be 1~4s, such as 1s, 1.5s, 2s, 2.5s, 3s,
3.5s or 4s etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable, preferably
For 2~3s.
In the present invention, due to formula (2) ozone and NO2Reaction it is relatively slow, when flue-gas temperature is lower in the present invention, control
Making certain reaction time helps to obtain desirable oxidation product N2O5。
Second aspect, the present invention provides a kind of arrangement of above-mentioned ozone distributor, the ozone distributor arrangement
When in flue, the front end of ozone distributor main body, ozone transport conduit are arranged in along flow of flue gas direction for ozone transport conduit
Vertical with flow of flue gas direction, ozone emission direction is identical as flow of flue gas direction.
As currently preferred technical solution, before the ozone distributor is arranged in absorption tower.
Preferably, absorbent is sprayed in the absorption tower.
Preferably, the gas of each distributed areas of ozone distributor is left to entering mixing before absorption tower contacts with absorbent
Time of contact is no less than 0.5s, such as 0.5s, 0.8s, 1s, 1.2s or 1.5s etc., it is not limited to cited numerical value, is somebody's turn to do
Other unlisted numerical value are equally applicable in numberical range.
In the present invention, after ozone is reacted and left in a distributed areas with flue gas, each zone gas is mixed, residual ozone
With NO fast reaction, that is, it can avoid ozone and overflow, NO can also be improved as far as possiblexDegree of oxidation.
The third aspect, the present invention provides a kind of purposes of above-mentioned ozone distributor, the ozone distributor is used for flue gas
Oxidation-absorption denitration.
Preferably, the source of the flue gas includes steel sintering coking industry, coal-burning boiler industry or petroleum catalytic cracking
Industry.
Compared with prior art, the invention has the following advantages:
(1) present invention is by being divided into multiple oxide regions for ozone distributor, in ozone and NOxPopulation proportion is compared with low condition
Under, it realizes that ozone part is excessive, obtains desirable oxidation product N2O5, orient and improve N in oxidation product2O5Shared ratio；
(2) present invention utilizes ozone oxidation NO and NO2Reaction rate difference, pass through the mixing of oxide regions flue gas, it is real
The complete ozone of local unreacted, the ozone oxygen with conventionally employed single reaction region are eliminated in the fast reaction of existing ozone and NO
Change denitration technology to compare, under identical ozone consumption, denitrating flue gas efficiency 10~20% can be improved, reach denitrating flue gas efficiency
To 80% or more, the cost effectiveness of oxidation-absorption denitration technology is effectively reduced；
(3) the ozone distributor designs of subregion of the present invention oxidation are simple, strong operability, and engineering is with the obvious advantage, knot
It is practical to close scene, design structure multiplicity is suitble to be widely applied in oxidation-absorption denitration technology.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the ozone distributor for the subregion oxidation that the embodiment of the present invention 1 provides；
Fig. 2 is the main view of the ozone distributor for the subregion oxidation that the embodiment of the present invention 1 provides；
Fig. 3 is the rearview of the ozone distributor for the subregion oxidation that the embodiment of the present invention 1 provides；
Fig. 4 is the side view of the ozone distributor for the subregion oxidation that the embodiment of the present invention 1 provides；
Wherein, 1- ozone distributor main body, 2- ozone transport conduit, 21- conveying supervisor, 22- delivery branch pipe, 3- flow tune
Regulating device, 4- nozzle.
Specific embodiment
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, below to the present invention with specific embodiment party
Formula is further described.But following embodiments is only simple example of the invention, does not represent or limits and is of the invention
Rights protection scope, the scope of the present invention are subject to claims.
Specific embodiment of the invention part provides a kind of ozone distributor of subregion oxidation, the ozone distributor packet
Ozone distributor main body 1 and ozone transport conduit 2 are included, the ozone distributor main body 1 is multiple distributions by partition longitudinal subdivision
Region, the corresponding one group of ozone transport conduit 2 in each distributed areas, the ozone transport conduit 2 are set to ozone distributor main body 1
One end.
When the ozone distributor is arranged in flue, ozone transport conduit 2 is arranged along flow of flue gas direction in ozone point
The front end of cloth device main body 1, ozone transport conduit 2 is vertical with flow of flue gas direction, ozone emission direction and flow of flue gas direction phase
Together.
The following are typical but non-limiting embodiments of the invention:
Embodiment 1:
A kind of ozone distributor of subregion oxidation is present embodiments provided, the structural schematic diagram of the ozone distributor is as schemed
Shown in 1, main view, rearview and side view difference are as shown in Figure 2, Figure 3 and Figure 4, including ozone distributor main body 1 and ozone
Conveyance conduit 2, the ozone distributor main body 1 are 4 distributed areas by partition longitudinal subdivision, and each distributed areas are one group corresponding
Ozone transport conduit 2, the ozone transport conduit 2 are set to one end of ozone distributor main body 1.
Wherein, one group of ozone transport conduit 2 includes a conveying supervisor 21 and multiple delivery branch pipes 22, the conveying supervisor
21 are equipped with flow regulator 3, and the delivery branch pipe 22 is equipped with nozzle 4；Being equidistant between adjacent conveyor branch pipe 22, spray
Mouth 4 is set in qually spaced in delivery branch pipe 22.
NO in the ozone and flue gas that the ozone distributor is passed throughxMolar ratio be 1.3:1, wherein in 2 distributed areas
Ozone and NOxMolar ratio be 2:1, in addition ozone and NO in 2 distributed areasxMolar ratio be 0.6:1, reaction temperature
It is 60 DEG C, gas residence time 3s.
When the ozone distributor is arranged in flue, ozone transport conduit 2 is arranged along flow of flue gas direction in ozone point
The front end of cloth device main body 1, ozone transport conduit 2 is vertical with flow of flue gas direction, ozone emission direction and flow of flue gas direction phase
Together.
Before the ozone distributor is arranged in absorption tower, the gas for leaving each distributed areas of ozone distributor, which extremely enters, to be absorbed
Before tower, being mixed the time is 0.5s.
Embodiment 2:
A kind of ozone distributor of subregion oxidation is present embodiments provided, the ozone distributor is referring to smelly in embodiment 1
Oxygen distribution device, difference are: reaction temperature is 90 DEG C, gas residence time 2s, when different distributions region flue gas is mixed
Between be 1s.
Embodiment 3:
A kind of ozone distributor of subregion oxidation is present embodiments provided, the ozone distributor is referring to smelly in embodiment 1
Oxygen distribution device, difference are: reaction temperature is 120 DEG C, gas residence time 1s, when different distributions region flue gas is mixed
Between be 0.75s.
Embodiment 4:
A kind of ozone distributor of subregion oxidation is present embodiments provided, the ozone distributor is referring to smelly in embodiment 1
Oxygen distribution device, difference are: the distributed areas of ozone distributor are 2, NO in ozone and flue gasxTotal moles ratio be 1.3:1,
Wherein ozone and NO in 1 distributed areasxMolar ratio be 1.6:1, in addition ozone and NO in 1 distributed areasxMolar ratio be
1:1。
Embodiment 5:
A kind of ozone distributor of subregion oxidation is present embodiments provided, the ozone distributor is referring to smelly in embodiment 1
Oxygen distribution device, difference are: the distributed areas of ozone distributor are 3, NO in ozone and flue gasxTotal moles ratio be 1.3:1,
Ozone and NO in 3 distributed areasxMolar ratio be respectively 1.6:1,1.6:1 and 0.7:1.
Embodiment 6:
A kind of ozone distributor of subregion oxidation is present embodiments provided, the ozone distributor is referring to smelly in embodiment 1
Oxygen distribution device, difference are: the distributed areas of ozone distributor are 5, NO in ozone and flue gasxTotal moles ratio be 0.5:1,
Wherein ozone and NO in 1 distributed areasxMolar ratio be 1.5:1, in addition ozone and NO in 4 distributed areasxMolar ratio it is equal
For 0.25:1.
Embodiment 7:
A kind of ozone distributor of subregion oxidation is present embodiments provided, the ozone distributor is referring to smelly in embodiment 1
Oxygen distribution device, difference are: the distributed areas of ozone distributor are 5, NO in ozone and flue gasxTotal moles ratio be 1.3:1,
Wherein ozone and NO in 3 distributed areasxMolar ratio be 1.6:1, in addition ozone and NO in 2 distributed areasxMolar ratio
It is 0.85:1.
Embodiment 8:
A kind of ozone distributor of subregion oxidation is present embodiments provided, the ozone distributor is referring to smelly in embodiment 4
Oxygen distribution device, difference are: NO in ozone and flue gasxTotal moles ratio be 0.5:1, wherein ozone and NO in 1 distributed areasx
Molar ratio be 1:1, in addition ozone and NO in 1 distributed areasxMolar ratio be 0:1.
Comparative example 1:
This comparative example provides a kind of ozone distributor, and the ozone distributor is referring to ozone distributor in embodiment 4, area
It is not: NO in the ozone distributor not subregion, ozone and flue gasxMolar ratio be 1.3:1.
Comparative example 2:
This comparative example provides a kind of ozone distributor, and the ozone distributor is referring to ozone distributor in embodiment 6, area
It is not: NO in the ozone distributor not subregion, ozone and flue gasxMolar ratio be 0.5:1.
N is converted into NO in embodiment 1-8 and comparative example 1-22O5、NO2Ratio and the spill-out of ozone examined
It surveys, the results are shown in Table 1, wherein after the ozone spill-out refers to ozone and smoke reaction and is mixed, into absorption tower
The surplus of preceding ozone.
NO is converted into N in 1 embodiment and comparative example of table2O5、NO2Ratio and ozone spill-out
As shown in Table 1,4 subregion ozone distributor described in embodiment 1-3, and ozone and NOxMolar ratio be greater than 1:1 item
Under part, in addition to oxidizing temperature is 120 DEG C of embodiment 3, NO's is converted into N2O5Ratio totally reaches 40% or more, ozone
Spill-out is few；2 subregion ozone distributor, NO described in embodiment 4 are converted into N2O5Ratio can reach 40%；Described in embodiment 5
3 subregion ozone distributors, NO are converted into N2O5Ratio also can reach 50% substantially, almost ozone free overflow；It is smelly in embodiment 6
Oxygen and NOxTotal moles ratio be much smaller than 1:1, but ozone and NO in its single distributed areasxMolar ratio be greater than 1:1, therefore still have
N2O5It generates；5 subregion ozone distributors of embodiment 7, ozone and NOxTotal moles ratio be greater than 1:1, be converted into N2O5Ratio can
Up to 50% or more, final ozone free overflows；And in embodiment 8, although the ozone distributor is also classified into 2 distributed areas,
Ozone and NO in its single distributed areasxMolar ratio no more than 1:1, without N in reaction process2O5It generates.
The non-subregion of ozone distributor in comparative example 1 and 2, when comparative example 1 and embodiment 1-4 ozone having the same with
NOxTotal moles ratio when, NO is converted into N2O5Ratio is significantly lower than the data in embodiment, and ozone spill-out is also higher；When right
Ratio 2 and the ozone having the same of embodiment 6 and NOxTotal moles ratio when, although molar ratio is lower than 1:1, have in embodiment
N2O5It generates, and without N in comparative example 22O5It generates.
The ozone distributor that can be seen that subregion oxidation of the present invention with comparative example based on the above embodiments can be not
Under conditions of increasing ozone consumption, realizes that ozone part is excessive, obtain desirable oxidation product N2O5, orientation raising oxidation product
Middle N2O5Proportion reduces the difficulty of subsequent absorption, and denitrating flue gas efficiency is made to reach 80% or more, while reducing ozone spilling
Amount；The ozone distributor designs are simple, and strong operability, engineering is with the obvious advantage, and design structure multiplicity is suitble in oxidation-suction
It receives and is widely applied in denitration technology.
The Applicant declares that the present invention is explained by the above embodiments detailed construction and method of the invention, but the present invention
It is not limited to above-mentioned detailed construction and method, that is, does not mean that the present invention must rely on above-mentioned detailed construction and method could be real
It applies.It should be clear to those skilled in the art, any improvement in the present invention, replaces to the equivalent of structure of the invention component
It changes and the addition of accessory, the selection of concrete mode etc., all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. a kind of ozone distributor of subregion oxidation, which is characterized in that the ozone distributor include ozone distributor main body and
Ozone transport conduit, the ozone distributor main body are multiple distributed areas by partition longitudinal subdivision, and each distributed areas are corresponding
One group of ozone transport conduit, the ozone transport conduit are set to one end of ozone distributor main body.
2. ozone distributor according to claim 1, which is characterized in that the quantity of the distributed areas is at least 2, excellent
It is selected as 2~5.
3. ozone distributor according to claim 1 or 2, which is characterized in that one group of ozone transport conduit includes one defeated
Send supervisor and multiple delivery branch pipes.
4. ozone distributor according to claim 3, which is characterized in that the conveying supervisor is equipped with flow and adjusts dress
It sets.
5. ozone distributor according to claim 3 or 4, which is characterized in that adjacent defeated in same group of ozone transport conduit
Send being equidistant between branch pipe；
Preferably, the delivery branch pipe is equipped with nozzle；
Preferably, the nozzle opening is towards the inside of ozone distributor；
Preferably, the nozzle is set in qually spaced in delivery branch pipe.
6. ozone distributor according to claim 1-5, which is characterized in that the ozone distributor is passed through smelly
NO in oxygen and flue gasxMolar ratio be (0.5~1.3): 1；
Preferably, ozone and NO in single distributed areasxMolar ratio be (0~2): 1, preferably (0.3~1.5): 1.
7. ozone distributor according to claim 1-6, which is characterized in that in the ozone distributor ozone with
NOxReaction temperature be 60~120 DEG C, preferably 60~90 DEG C；
Preferably, gas residence time is 1~4s, preferably 2~3s in the ozone distributor.
8. a kind of arrangement of such as described in any item ozone distributors of claim 1-7, which is characterized in that the ozone point
When cloth device is arranged in flue, the front end of ozone distributor main body, ozone are arranged in along flow of flue gas direction for ozone transport conduit
Conveyance conduit is vertical with flow of flue gas direction, and ozone emission direction is identical as flow of flue gas direction.
9. arrangement according to claim 8, which is characterized in that before the ozone distributor is arranged in absorption tower；
Preferably, absorbent is sprayed in the absorption tower；
Preferably, the gas of each distributed areas of ozone distributor is left to entering mixing before absorption tower contacts with the absorbent
Time of contact is no less than 0.5s.
10. a kind of purposes of such as described in any item ozone distributors of claim 1-7, which is characterized in that the ozone distribution
Device is used for the oxidation-absorption denitration of flue gas；
Preferably, the source of the flue gas includes steel sintering coking industry, coal-burning boiler industry or petroleum catalytic cracking industry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811124113.7A CN109173662B (en) | 2018-09-26 | 2018-09-26 | Ozone distributor for zone oxidation and arrangement mode and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811124113.7A CN109173662B (en) | 2018-09-26 | 2018-09-26 | Ozone distributor for zone oxidation and arrangement mode and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109173662A true CN109173662A (en) | 2019-01-11 |
| CN109173662B CN109173662B (en) | 2020-09-15 |
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| CN201811124113.7A Active CN109173662B (en) | 2018-09-26 | 2018-09-26 | Ozone distributor for zone oxidation and arrangement mode and application thereof |
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| CN111514713A (en) * | 2020-03-26 | 2020-08-11 | 南京龙源环保有限公司 | Equipment and method for removing odor substances in flue gas |
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