CN106492634A - A kind of flue gas desulfurization and denitrification system - Google Patents
A kind of flue gas desulfurization and denitrification system Download PDFInfo
- Publication number
- CN106492634A CN106492634A CN201611087365.8A CN201611087365A CN106492634A CN 106492634 A CN106492634 A CN 106492634A CN 201611087365 A CN201611087365 A CN 201611087365A CN 106492634 A CN106492634 A CN 106492634A
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- CN
- China
- Prior art keywords
- ammoniacal liquor
- air
- water spray
- ammonia water
- flue gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- 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
-
- 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
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of flue gas desulfurization and denitrification system, including coal-burning boiler, SCR reactors, deduster, absorption tower and chimney, ammoniacal liquor aerosol shower nozzle is provided with the flue in coal-burning boiler exit, vertical ammonia water spray passage is provided with the main body of ammoniacal liquor aerosol shower nozzle, the ammonia water spray passage is by the ammoniacal liquor inducer being sequentially communicated, contraction section, trunnion section and diffuser composition, ammonia water spray passage is provided with air storing cavity in the body top of aerosol shower nozzle, even circumferential is set around ammonia water spray passage in bottom 6 air ducts are set, the air duct top is connected with air storing cavity, air duct bottom is divided into two branched bottoms, one branched bottom is vertical with trunnion section and is connected, another branched bottom is symmetrical in "eight" shape two-by-two and communicates with diffuser；Ammoniacal liquor inducer is connected with ammoniacal liquor holding vessel by ammoniacal liquor inlet pipe, supersonic oscillations device in ammoniacal liquor holding vessel；Air storing cavity is connected with air blast by air inlet lines, and the device causes ammoniacal liquor with flue gas with preferably mixed effect, and denitration efficiency is high.
Description
Technical field
The invention belongs to field of Environment Protection, more particularly to a kind of flue gas desulfurization and denitrification system.
Background technology
Nitrogen oxides has multiple environmental effect.The discharged nitrous oxides of China increase rapidly in recent years, cause region
Ozone and PM2.5 pollutions increase, and large-scale gray haze phenomenon happens occasionally.China's acid rain from sulfate type acid rain to sulfuric acid/
The compound transition of nitric acid, the nitrogen deposition that discharged nitrous oxides increase causes become China's body eutrophication major reason it
One, the nitrogen dioxide in nitrogen oxides more also has directly harm to health, and these are all good for the body of the people
Health and ecological environment are caused and are had a strong impact on.
During nitrogen oxides reduction of discharging is implemented, maximally efficient means are SNCR methods（SNCR）With
The uniform mixing of selective catalytic reduction (SCR), wherein one of core technology of SCR for flue gas and reducing agent ammonia, at present,
The most frequently used scheme is that its operation principle is using grating type injection apparatus：Ammonia-spraying grid is arranged on and leads to SCR reactors
In flue, ammonia nozzle as much as possible is set and is evenly distributed in flue cross section, adjusting means is set on its pipeline, is made
The ammonia that must be sprayed into can be well mixed with flue gas, found in operation, the purpose that ammonia to be reached is well mixed with flue gas, nozzle
And its quantity of pipeline is more, each valve opening of regulation is more numerous and diverse, simultaneously because nozzle quantity is more, nozzle bore is little, spray
Mouth clogging in high dust atmosphere happens occasionally, and has a strong impact on the mix uniformly effect of ammonia and flue gas, and then causes to take off
Nitre inefficiency, the escaping of ammonia are raised and cause secondary pollution.
Content of the invention
The invention provides a kind of flue gas desulfurization and denitrification system, can effectively solve the problem that existing boiler smoke mixes dress with ammonia
Put the uneven problem of mixing.
In order to realize foregoing invention purpose, a kind of such, flue gas desulfurization and denitrification system, bag is the technical scheme is that
Include coal-burning boiler, SCR reactors, deduster, absorption tower and the chimney being sequentially connected by flue, the coal boiler
It is provided with ammoniacal liquor aerosol shower nozzle in thorax, in the main body of described ammoniacal liquor aerosol shower nozzle, is provided with vertical ammonia water spray passage, should
Ammonia water spray passage is made up of ammoniacal liquor inducer, contraction section, trunnion section and the diffuser being sequentially communicated, described aerosol shower nozzle
Ammonia water spray passage is provided with air storing cavity in body top, even circumferential is set around ammonia water spray passage in bottom and is arranged
6 air ducts, the air duct top are connected with air storing cavity, and air duct bottom is divided into two branched bottoms, and a branch leads to
Road is vertical with trunnion section and is connected, and another branched bottom is symmetrical in "eight" shape two-by-two and communicates with diffuser；Institute
The ammoniacal liquor inducer that states is connected with ammoniacal liquor holding vessel by ammoniacal liquor inlet pipe, is provided with compression pump, described ammoniacal liquor on ammoniacal liquor inlet pipe
Vibrating arm is provided with holding vessel, and the tank skin that the vibrating arm one end passes impregnating autoclave stretches out impregnating autoclave outer being connected with ultrasonic transformer,
Ultrasonic transformer is connected with supersonic generator by transducer, arranges sealed elastic unit between vibrating arm and ammoniacal liquor holding vessel tank skin
Part；Described air storing cavity is connected with air blast by air inlet lines.
Preferably, on described ammoniacal liquor inlet pipe, ammoniacal liquor meter is provided with.
Preferably, the ammoniacal liquor holding vessel exit is provided with ammoniacal liquor filter.
Beneficial effect：The present invention arranges supersonic oscillations device in ammoniacal liquor holding vessel, under cavitation, ammoniacal liquor is turned
Micron-sized submicron droplets are turned to, which is sprayed by the ammonia water spray passage of aerosol shower nozzle through compression pump, in aerosol shower nozzle, led to
After blower fan is crossed by the atomization of ammoniacal liquor submicron droplets, blow out the face of dissipating so which is more equally distributed in flue, enhance flue gas and
The mix uniformly effect of ammoniacal liquor.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, should
Embodiment is only used for the explanation present invention, does not constitute limiting the scope of the present invention.
Shown in Figure 1, a kind of flue gas desulfurization and denitrification system, a kind of flue gas desulfurization and denitrification system, including by fume pipe
Coal-burning boiler 1, SCR reactors 2, deduster 3, absorption tower 4 and chimney 5 that road is sequentially connected, set in the coal-burning boiler burner hearth
Be equipped with ammoniacal liquor aerosol shower nozzle, vertical ammonia water spray passage is provided with the main body of described ammoniacal liquor aerosol shower nozzle, ammoniacal liquor spray
Penetrate passage to be made up of the ammoniacal liquor inducer 6, contraction section 6, trunnion section 8 and the diffuser 9 that are sequentially communicated, the master of described aerosol shower nozzle
Ammonia water spray passage is provided with air storing cavity 10 in body top, even circumferential is set around ammonia water spray passage in bottom and is arranged
6 air ducts 11, the air duct top are connected with air storing cavity, and air duct bottom is divided into two branched bottoms, a branch
Passage is vertical with trunnion section 8 and is connected, another branched bottom symmetrical in "eight" shape two-by-two and with 9 phase of diffuser
Logical；Described ammoniacal liquor inducer 6 is connected with ammoniacal liquor holding vessel 12 by ammoniacal liquor inlet pipe, is provided with compression pump, institute on ammoniacal liquor inlet pipe
Vibrating arm 13 is provided with the ammoniacal liquor holding vessel that states, the tank skin that 13 one end of vibrating arm passes impregnating autoclave stretches out outside impregnating autoclave and becomes
Width bar 14 is connected, and ultrasonic transformer 14 is connected with supersonic generator 16 by transducer 15, vibrating arm 13 and ammoniacal liquor holding vessel 12
Sealed elastic element is set between tank skin；Described air storing cavity 10 is connected with air blast by air inlet lines.
Preferably, on described ammoniacal liquor inlet pipe, ammoniacal liquor meter is provided with.
Preferably, described ammoniacal liquor holding vessel exit is provided with ammoniacal liquor filter 17.
Supersonic generator 16 sends pulse signal and produces ultra sonic machinery vibration after the conversion of transducer 15, through luffing
Bar 14 improves amplitude, and vibration is passed in vibrating arm 13, and it is micron-sized super to make the ammoniacal liquor cavitation being stored in ammoniacal liquor holding vessel 12
Microlayer model, through the ammonia water spray passage that pressure is pumped into aerosol shower nozzle, while after blower fan introduces air into air chamber, air inlet
Passage, because ammoniacal liquor submicron droplets enter pipe larynx section jet velocity increase suddenly, formed negative pressure, automatically by air by with trunnion section 8
Branched bottom inspiration that is vertical and being connected is mixed, forms aerosol ion, enters diffuser 9, now, from diffuser 9
The air that the branched bottom for communicating sprays is dispelled out, and it is anti-that penetrating flue carries out redox with fire coal boiler fume
Should, oxynitrides is removed tentatively, SCR reactors are entered, through the catalysis of denitrating catalyst, after secondary removing oxynitrides,
3 dedusting of removing dust device enters absorption tower 4, and in absorption tower, flue gas is fully contacted with the alkali lye clear liquid of the ejection by spray system 8
Discharged by chimney 5 after reaction sulphur removal, denitration efficiency and desulfuration efficiency are up to more than 95%.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements that is made etc. should be included within the scope of the present invention.
Claims (3)
1. a kind of flue gas desulfurization and denitrification system, it is characterised in that include coal-burning boiler, the SCR being sequentially connected by flue
Reactor, deduster, absorption tower and chimney, are provided with ammoniacal liquor aerosol shower nozzle, described ammoniacal liquor gas in the coal-burning boiler burner hearth
Be provided with vertical ammonia water spray passage in the main body of fog spray head, the ammonia water spray passage by the ammoniacal liquor inducer being sequentially communicated,
Contraction section, trunnion section and diffuser composition, is provided with storage around ammonia water spray passage in the body top of described aerosol shower nozzle
Air cavity, arranges even circumferential around ammonia water spray passage in bottom and arranges 6 air ducts, the air duct top and air storing cavity
It is connected, air duct bottom is divided into two branched bottoms, and a branched bottom is vertical with trunnion section and is connected, another branched bottom
Symmetrical and communicate with diffuser in "eight" shape two-by-two；Described ammoniacal liquor inducer is by ammoniacal liquor inlet pipe and ammoniacal liquor holding vessel
Being connected, compression pump being provided with ammoniacal liquor inlet pipe, vibrating arm is provided with described ammoniacal liquor holding vessel, the vibrating arm one end passes leaching
The tank skin of stain tank stretches out impregnating autoclave outer being connected with ultrasonic transformer, and ultrasonic transformer is connected with supersonic generator by transducer, is vibrated
Sealed elastic element is set between bar and ammoniacal liquor holding vessel tank skin；Described air storing cavity is connected with air blast by air inlet lines.
2. a kind of flue gas desulfurization and denitrification system according to claim 1, it is characterised in that arrange on described ammoniacal liquor inlet pipe
There is ammoniacal liquor meter.
3. a kind of flue gas desulfurization and denitrification system according to claim 1, it is characterised in that the ammoniacal liquor holding vessel exit
It is provided with ammoniacal liquor filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087365.8A CN106492634A (en) | 2016-11-30 | 2016-11-30 | A kind of flue gas desulfurization and denitrification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087365.8A CN106492634A (en) | 2016-11-30 | 2016-11-30 | A kind of flue gas desulfurization and denitrification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106492634A true CN106492634A (en) | 2017-03-15 |
Family
ID=58329303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611087365.8A Withdrawn CN106492634A (en) | 2016-11-30 | 2016-11-30 | A kind of flue gas desulfurization and denitrification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106492634A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109550378A (en) * | 2017-09-26 | 2019-04-02 | 萍乡市普天高科实业有限公司 | Low-temp desulfurization denitration device and its technique in a kind of flue gas |
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| CN2259230Y (en) * | 1996-04-03 | 1997-08-13 | 吴道洪 | Efficient liquid atomizer from two sources |
| JP2004270609A (en) * | 2003-03-11 | 2004-09-30 | Nissan Diesel Motor Co Ltd | Emission control device |
| JP2007000783A (en) * | 2005-06-24 | 2007-01-11 | Samson Co Ltd | Denitrification apparatus for preventing clogging of urea water jetting nozzle |
| CN2877882Y (en) * | 2006-01-26 | 2007-03-14 | 上海交通大学 | Eddy flow steam-liquid atomization injector |
| CN202490711U (en) * | 2011-08-29 | 2012-10-17 | 太平洋水处理工程有限公司 | Cyclone-type Venturi jet aeration nozzle |
| CN203002506U (en) * | 2012-12-14 | 2013-06-19 | 中国石油化工股份有限公司 | Ammonia spraying device and furnace |
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| CN203886401U (en) * | 2014-05-15 | 2014-10-22 | 北京洛卡环保技术有限公司 | Boiler flue gas denitration system adopting SCR process |
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| CN104454093A (en) * | 2014-11-13 | 2015-03-25 | 重庆超力高科技股份有限公司 | Precise-jetting quick-responding air type SCR jetting device and method |
| CN104548928A (en) * | 2014-12-19 | 2015-04-29 | 北京建筑材料科学研究总院有限公司 | Selective catalytic reduction denitration method and selective catalytic reduction denitration system |
| CN105148697A (en) * | 2015-08-21 | 2015-12-16 | 南京白云化工环境监测有限公司 | Flue gas desulfurization and denitrification system |
| CN204933244U (en) * | 2015-08-20 | 2016-01-06 | 中国华电集团科学技术研究总院有限公司 | NOx removal device in coal-burning power plant's coal-powder boiler flue gas |
| CN205461766U (en) * | 2016-03-30 | 2016-08-17 | 河北卓然化工设备科技有限公司 | A gas -liquid mixture injection system for deNOx systems |
| CN106121783A (en) * | 2016-06-29 | 2016-11-16 | 中国北方发动机研究所(天津) | A kind of air mixing atomizing nozzle of SCR |
| CN206325406U (en) * | 2016-11-30 | 2017-07-14 | 南京右转信息科技有限公司 | A kind of flue gas desulfurization and denitrification system |
-
2016
- 2016-11-30 CN CN201611087365.8A patent/CN106492634A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259230Y (en) * | 1996-04-03 | 1997-08-13 | 吴道洪 | Efficient liquid atomizer from two sources |
| JP2004270609A (en) * | 2003-03-11 | 2004-09-30 | Nissan Diesel Motor Co Ltd | Emission control device |
| JP2007000783A (en) * | 2005-06-24 | 2007-01-11 | Samson Co Ltd | Denitrification apparatus for preventing clogging of urea water jetting nozzle |
| CN2877882Y (en) * | 2006-01-26 | 2007-03-14 | 上海交通大学 | Eddy flow steam-liquid atomization injector |
| CN202490711U (en) * | 2011-08-29 | 2012-10-17 | 太平洋水处理工程有限公司 | Cyclone-type Venturi jet aeration nozzle |
| CN203002506U (en) * | 2012-12-14 | 2013-06-19 | 中国石油化工股份有限公司 | Ammonia spraying device and furnace |
| CN203170210U (en) * | 2013-04-10 | 2013-09-04 | 南京西普水泥工程集团有限公司 | Special spray gun for SNCR (Selective Non-Catalytic Reduction) denitration process |
| KR101454554B1 (en) * | 2013-07-08 | 2014-10-27 | 김민중 | An ultrasonic humidifier with cascade and an apparatus for providing atomized DeNOx reagent utilizing ultrasonic humidifier with cascade and a venturi in SCR system |
| CN203886401U (en) * | 2014-05-15 | 2014-10-22 | 北京洛卡环保技术有限公司 | Boiler flue gas denitration system adopting SCR process |
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| CN204933244U (en) * | 2015-08-20 | 2016-01-06 | 中国华电集团科学技术研究总院有限公司 | NOx removal device in coal-burning power plant's coal-powder boiler flue gas |
| CN105148697A (en) * | 2015-08-21 | 2015-12-16 | 南京白云化工环境监测有限公司 | Flue gas desulfurization and denitrification system |
| CN205461766U (en) * | 2016-03-30 | 2016-08-17 | 河北卓然化工设备科技有限公司 | A gas -liquid mixture injection system for deNOx systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109550378A (en) * | 2017-09-26 | 2019-04-02 | 萍乡市普天高科实业有限公司 | Low-temp desulfurization denitration device and its technique in a kind of flue gas |
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Application publication date: 20170315 |