CN207722598U - A kind of pre- spray-absorption device of ozone denitration - Google Patents
A kind of pre- spray-absorption device of ozone denitration Download PDFInfo
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- CN207722598U CN207722598U CN201721541122.7U CN201721541122U CN207722598U CN 207722598 U CN207722598 U CN 207722598U CN 201721541122 U CN201721541122 U CN 201721541122U CN 207722598 U CN207722598 U CN 207722598U
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Abstract
The utility model discloses a kind of pre- spray-absorption devices of ozone denitration, including oxygen preparation facilities, oxygen conveying pipe, ozone generator device, ozone transport conduit, ozone distribution device, flue collector, pre- spray-absorption device and wet desulphurization device, the oxygen preparation facilities is connect with ozone generator device by oxygen conveying pipe, ozone generator device is connect with ozone distribution device by ozone transport conduit, ozone distribution device is connect with flue collector, flue collector is connect with pre- spray-absorption device, and pre- spray-absorption device is connect with wet desulphurization device.
Description
Technical field
The utility model belongs to flue gas denitrification equipment field, especially a kind of pre- spray-absorption device of ozone denitration.
Background technology
Nitrogen oxides is one of three kinds of main atmosphere pollutions being conventionally recognized by (i.e. flue dust, sulfur dioxide, nitrogen oxidation
Object), its extent of injury goes even farther than sulfur dioxide, or even more deep and broad.With the development of economy, effectively control
Atmosphere pollution situation has been very urgent caused by fire coal, especially controls the nitrogen oxides in coal-fired process, denitrating flue gas skill
Art seems quite important.Gas denitrifying technology general at present is broadly divided into two classes, first, controlling the life of NOx in combustion process
At i.e. low NOx combusting technology (LNBs)；Second is that the NOx processing to generation, i.e. gas denitrifying technology.Wherein denitrating flue gas
Traditional technology mainly selective noncatalytic reduction (SNCR), two kinds of selective catalytic reduction (SCR), oxidizing and denitrating ozone
Method is current emerging gas denitrifying technology.
Oxidizing and denitrating ozone operation principle is the oxidation reaction process for NOx according to O3, actually finally by the valence of N
State variation embodies, and compared with other chemical substances such as CO, SOx in Gas phase Smoke, NOx can be soon by ozone oxygen
Change, this ozone oxidation for allowing for NOx has very high selectivity.Because the NOx in gas phase is converted to be dissolved in aqueous solution
Ionic compound, it is more complete that this allows for oxidation reaction, to irreversibly be stripped of Nox, without generating secondary pollution.Through
The ozone of peroxidization, addition is consumed by reaction, and excessive ozone can decompose in spray column.In addition to nox, one
A little heavy metals, as mercury and other heavy metal contaminants are also aoxidized by ozone simultaneously.The dust or solid of flue gas middle and high concentration
Grain object does not interfere with the removal efficiency of NOx.But current oxidizing and denitrating ozone method, which uniquely relies on subsequent wet desulphurization, to be set
It is standby, if the liquid-gas ratio design of subsequent wet desulphurization plant is relatively low, the nitrogen oxides after oxidation can not be fully absorbed, is caused
Denitration efficiency is low.
Utility model content
The utility model proposes a kind of pre- spray-absorption devices of ozone denitration, very quick using ozone and reacting for NOx
And the high-valence state nitrogen oxides feature soluble easily in water after reacting, the pre- spray-absorption of ozone denitration is installed in desulfurization inlet flue duct
Device is, it can be achieved that the efficiency for automatically controlling, improving ozone denitration of pre- spray-absorption, having and giving desulfurization fume cooling protection desulfurization
Equipment is not by high-temperature flue gas damage effect in tower.
To solve the above-mentioned problems, the utility model proposes a kind of pre- spray-absorption devices of ozone denitration.
Technical solution used by the utility model is：
A kind of pre- spray-absorption device of ozone denitration, including oxygen preparation facilities, oxygen conveying pipe, ozone generator dress
It sets, prepared by ozone transport conduit, ozone distribution device, flue collector, pre- spray-absorption device and wet desulphurization device, the oxygen
Device is connect with ozone generator device by oxygen conveying pipe, and ozone generator device passes through ozone with ozone distribution device
Conveyance conduit connects, and ozone distribution device is connect with flue collector, and flue collector is connect with pre- spray-absorption device, pre- spray-absorption dress
It sets and is connect with wet desulphurization device.Oxygen preparation facilities provides source of oxygen, ozone generator device profit for ozone generator device
Ozone is prepared with oxygen, ozone is mixed with flue gas in flue collector by ozone distribution device and carries out oxidation reaction by NOX oxidation
So that the nitrogen oxides after oxidation is contacted in advance with water by pre- spray-absorption device pre-absorption at the nitrogen oxides of high-valence state, is inhaled
A part is received, unabsorbed nitrogen oxides is absorbed using subsequent wet desulphurization equipment, substantially increases denitration efficiency.
Further, the pre- spray-absorption device include technique water tank, technique water pump, technique waterpipe, connecting pipe,
Pre- spray-absorption pipeline and desulfurization inlet flue duct, technique water tank, technique water pump, technique waterpipe are located at outside flue collector, technique
Water tank Joining Technology water pump, technique water pump Joining Technology waterpipe, technique waterpipe are connect with connecting pipe, connecting pipe with it is pre-
Spray-absorption pipeline connects, and pre- spray-absorption pipeline is connect with desulfurization inlet flue duct.Technique water tank is used to store spray-absorption liquid,
Technique water pump is ejected by spray-absorption liquid is delivered to connecting pipe by technique waterpipe by pre- spray-absorption pipeline
Desulfurization inlet flue duct, nitrogen oxides are absorbed in desulfurization inlet flue duct.
Further, every 0.5 ordinary rice of desulfurization inlet flue duct section to 1 square metre connection 1 pre- spray-absorption pipe
Road.Every 0.5 ordinary rice to 1 square metre setting 1 pre- spray-absorption pipeline, it is ensured that by pre- spray-absorption pipeline spray spray inhale
It receives liquid energy and covers desulfurization inlet flue duct comprehensively, it is ensured that the effect of pre-absorption can be amplified as possible, and then made de- into postorder wet method
The amount of the nitrogen oxides of sulphur equipment is reduced, and further increases denitration efficiency.
Preferably, the pre- spray-absorption pipeline is connected by sealing flange with desulfurization inlet flue duct.Pre- spray-absorption pipe
Road is connected by sealing flange with desulfurization inlet flue duct, prevents flue from revealing nitrogen oxides, it is ensured that the air-tightness of flue.
Preferably, the pre- spray-absorption pipeline is provided with pre- spray-absorption regulating valve.Pass through pre- spray-absorption regulating valve
The spray volume for adjusting spray-absorption liquid adjusts spray flux, the big corresponding spray of difference by gas inlet and outlet amount of nitrogen oxides
Water drenching amount is big, and correspondingly, the small corresponding water spray of difference is small.
Preferably, the pre- spray-absorption pipeline tail portion connects nozzle, and nozzle is located inside desulfurization inlet flue duct.Pass through spray
Spray-absorption liquid is become dispersion shape and sprayed by mouth, is increased the coverage area of spray-absorption liquid, is improved denitration efficiency.
Preferably, the distance between the nozzle and ozone distribution device are not less than 1 meter.
Preferably, the long length of side of the jet length of the nozzle not less than the desulfurization inlet flue duct cross section of half
Degree, the jet length of the nozzle are not less than the short side width of the desulfurization inlet flue duct cross section of half.Ensure nitrogen oxidation
Object passes through sufficiently long spray-absorption liquid zone domain, it is ensured that the effect of pre-absorption.
The utility model compared with the existing technology has the following advantages and effect：
1, the utility model makes the nitrogen oxides after oxidation be contacted in advance with water, is absorbed a part, unabsorbed nitrogen
Oxide is absorbed using subsequent wet desulphurization equipment, substantially increases denitration efficiency.
2, the utility model is automatically controlled according to gas inlet and outlet amount of nitrogen oxides difference realization, the big correspondence of difference
Water spray is big, and correspondingly, the small corresponding water spray of difference is small, realizes automatically controlling for pre- spray-absorption.
3, the utility model, which is only sprayed by nozzle into flue, sets water, can't increase flue gas resistance, relative to a whole set of ring
Protect the flue gas system no pressure loss of technique.
4, the utility model installation operation is simple, the automatically controlling of pre- spray-absorption can be achieved, to substantially increase ozone de-
The efficiency of nitre has to equipment in desulfurization fume cooling protection desulfurizing tower not by high-temperature flue gas damage effect；And with product without
Pollution, low-temperature zone denitration, not by exhaust gas volumn influence of fluctuations, boiler body is not transformed, using desulfurizing tower spray-absorption the advantages that.
5, the utility model is consumed through peroxidization, the ozone of addition by reaction, and excessive ozone can spray
It is decomposed in tower；In addition to nox, some heavy metals, as mercury and other heavy metal contaminants are also aoxidized by ozone simultaneously.
Description of the drawings
The attached drawing constituted part of this application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the local structural graph of the utility model.
Label declaration：
Oxygen preparation facilities 1；Oxygen conveying pipe 2；Ozone generator device 3；Ozone transport conduit 4；
Ozone distribution device 5；Flue collector 6；Technique water tank 7；Technique water pump 8；Technique waterpipe 9；
Pre- spray-absorption device 10；Desulfurization inlet flue duct 11；Wet desulphurization device 12；
Pre- spray-absorption pipeline 13；Pre- spray-absorption regulating valve 14；Sealing flange 15；
Nozzle 16；Connecting pipe 17.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
Embodiment 1：
As shown in Fig. 1 to 2, a kind of pre- spray-absorption device of ozone denitration, including oxygen preparation facilities 1, oxygen conveying pipe
Road 2, ozone generator device 3, ozone transport conduit 4, ozone distribution device 5, flue collector 6, technique water tank 7, technique water pump 8,
Technique waterpipe 9, pre- spray-absorption device 10, desulfurization inlet flue duct 11, wet desulphurization device 12, the oxygen preparation facilities 1
Be connected by oxygen conveying pipe 2 with ozone generator device 3, and ozone generator device 3 with ozone distribution device 5 by smelly
Oxygen conveyance conduit 4 is connected, and ozone distribution device 5 passes through 11 phase of flue collector 6 and desulfurization inlet flue duct with pre- spray-absorption device 10
Even, technique water tank 7, technique water pump 8 and pre- spray-absorption device 10 are connected by technique waterpipe 9, pre- spray-absorption device 10
It is connected with desulfurization inlet flue duct 11, the pre- spray-absorption device 10 is by connecting pipe 17, pre- spray-absorption pipeline 13, pre- spray
It absorbs regulating valve 14, sealing flange 15, nozzle 16 to constitute, and desulfurization inlet flue duct 11 passes through sealing flange 15 and four pre- sprays
Extraction duct 13 is connected to, and one end of the pre- spray-absorption pipeline 13 is connected to connecting pipe 17, pre- spray-absorption pipeline 13
The other end is in the inner cavity of desulfurization inlet flue duct 11 and connects nozzle 16, and the desulfurization inlet flue duct 11 is 1 meter long, 2 meters wide
Flue and be arranged there are four pre- spray-absorption pipeline 13, four pre- spray-absorption pipelines 13 are correspondingly arranged four pre- spray-absorptions
Regulating valve 14, each pre- spray-absorption pipeline 13 are connected by sealing flange 15 with desulfurization inlet flue duct 11.
In use, being that ozone generator device 3 provides source of oxygen using oxygen preparation facilities 1, oxygen is by oxygen conveying pipe
Road 2 is delivered to ozone generator device 3, and ozone generator device 3 prepares ozone using oxygen by electrion, and ozone passes through
Ozone transport conduit 4 is transported to ozone distribution device 5 and is mixed with flue gas in flue collector 6 and carry out oxidation reaction, in flue gas
NOx by ozone oxidation at the nitrogen oxides of high-valence state, by 10 pre-absorption of pre- spray-absorption device, in pre- spray-absorption device 10
Spray-absorption liquid come from technique water tank 7, conveyed by technique waterpipe 9 by technique water pump 8 and pass through connecting pipe 17, pre- successively
Spray-absorption pipeline 13, and then by desulfurization inlet flue duct 11, pre-absorption, mixed flue gas are carried out in desulfurization inlet flue duct 11
It is reacted with spray-absorption liquid, the NOx in gas phase is converted to be dissolved in the ionic compound of aqueous solution, is filled by subsequent wet desulphurization
Set 12 spray-absorptions.Gas inlet and outlet amount of nitrogen oxides are obtained by flue gas on-Line Monitor Device (CEMS) directly monitoring
, the signal that inlet and outlet difference is fed back according to flue gas on-Line Monitor Device (CEMS) passes through DCS or the logic of PLC control system
It calculates and obtains, then calculate inlet and outlet difference by the logic of DCS or PLC control system with water spray, shower water
Amount is controlled by pre- spray-absorption regulating valve 14, and the big corresponding water spray of difference is big, and correspondingly, the small corresponding water spray of difference is small.
Embodiment 2：
The present embodiment is substantially the same manner as Example 1, and distinctive points are：In embodiment 2, nozzle 16 and ozone distribution device 5
Horizontal distance between is 1 meter.
Embodiment 3：
The present embodiment is substantially the same manner as Example 1, and distinctive points are：In embodiment 3, nozzle 16 and ozone distribution device 5
Horizontal distance between is 2 meters.
Embodiment 4：
The present embodiment is substantially the same manner as Example 2, and distinctive points are：In embodiment 4,2 along flue length direction level
The jet length for putting the nozzle 16 of setting is the desulfurization inlet flue duct length of half, and 22 along flue width direction water
The jet length that flat pendulum puts the nozzle 16 of setting is the desulfurization inlet flue duct width of half.
Embodiment 5：
The present embodiment is substantially the same manner as Example 3, and distinctive points are：In embodiment 4,2 along flue length direction level
The desulfurization inlet flue duct length that the jet length of the nozzle 16 of setting is 3/4ths is put, 22 along flue width direction water
The desulfurization inlet flue duct width that the jet length that flat pendulum puts the nozzle 16 of setting is 3/4ths.
Embodiment 6：
The present embodiment is substantially the same manner as Example 2, and distinctive points are：In embodiment 4, the desulfurization inlet flue duct 11 is circle
Shape flue, the jet length of the nozzle 16 are not less than the radius of 11 cross section of desulfurization inlet flue duct.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (8)
1. a kind of pre- spray-absorption device of ozone denitration, which is characterized in that including oxygen preparation facilities, oxygen conveying pipe, smelly
Oxygen Generator device, ozone transport conduit, ozone distribution device, flue collector, pre- spray-absorption device and wet desulphurization device, institute
It states oxygen preparation facilities to connect by oxygen conveying pipe with ozone generator device, ozone generator device is filled with ozone gas distribution
It sets and is connected by ozone transport conduit, ozone distribution device is connect with flue collector, and flue collector is connect with pre- spray-absorption device, in advance
Spray-absorption device is connect with wet desulphurization device.
2. the pre- spray-absorption device of ozone denitration according to claim 1, which is characterized in that the pre- spray-absorption device
Including technique water tank, technique water pump, technique waterpipe, connecting pipe, pre- spray-absorption pipeline and desulfurization inlet flue duct, process water
Case, technique water pump, technique waterpipe are located at outside flue collector, technique water tank Joining Technology water pump, technique water pump Joining Technology water
Pipeline, technique waterpipe are connect with connecting pipe, and connecting pipe is connect with pre- spray-absorption pipeline, pre- spray-absorption pipeline with it is de-
Sulphur inlet flue duct connects.
3. the pre- spray-absorption device of ozone denitration according to claim 2, which is characterized in that the desulfurization inlet flue duct is cut
1 pre- spray-absorption pipeline of every 0.5 square metre to the 1 square metre connection in face.
4. the pre- spray-absorption device of ozone denitration according to claim 3, which is characterized in that the pre- spray-absorption pipeline
It is connected with desulfurization inlet flue duct by sealing flange.
5. the pre- spray-absorption device of ozone denitration according to claim 4, which is characterized in that the pre- spray-absorption pipeline
It is provided with pre- spray-absorption regulating valve.
6. the pre- spray-absorption device of ozone denitration according to claim 5, which is characterized in that the pre- spray-absorption pipeline
Tail portion connects nozzle, and nozzle is located inside desulfurization inlet flue duct.
7. the pre- spray-absorption device of ozone denitration according to claim 6, which is characterized in that the nozzle and ozone gas distribution
The distance between device is not less than 1 meter.
8. the pre- spray-absorption device of ozone denitration according to claim 7, which is characterized in that the jet length of the nozzle
Not less than the long side length of the desulfurization inlet flue duct cross section of half, the jet length of the nozzle is not less than half
Desulfurization inlet flue duct cross section short side width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721541122.7U CN207722598U (en) | 2017-11-17 | 2017-11-17 | A kind of pre- spray-absorption device of ozone denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721541122.7U CN207722598U (en) | 2017-11-17 | 2017-11-17 | A kind of pre- spray-absorption device of ozone denitration |
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| CN207722598U true CN207722598U (en) | 2018-08-14 |
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| CN201721541122.7U Expired - Fee Related CN207722598U (en) | 2017-11-17 | 2017-11-17 | A kind of pre- spray-absorption device of ozone denitration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107854982A (en) * | 2017-11-17 | 2018-03-30 | 华电电力科学研究院 | The pre- spray-absorption device of ozone denitration |
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2017
- 2017-11-17 CN CN201721541122.7U patent/CN207722598U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107854982A (en) * | 2017-11-17 | 2018-03-30 | 华电电力科学研究院 | The pre- spray-absorption device of ozone denitration |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180814 Termination date: 20181117 |