CN105363325A - Supersonic wave-ozone-based flue gas desulphurization and denitration device - Google Patents
Supersonic wave-ozone-based flue gas desulphurization and denitration device Download PDFInfo
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- CN105363325A CN105363325A CN201510773069.2A CN201510773069A CN105363325A CN 105363325 A CN105363325 A CN 105363325A CN 201510773069 A CN201510773069 A CN 201510773069A CN 105363325 A CN105363325 A CN 105363325A
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- ozone
- flue gas
- reaction chamber
- smoke reaction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a supersonic wave-ozone-based flue gas desulphurization and denitration device. Air goes through a first valve and then enters a first dryer, the first dryer and a plasma ozone generator are connected by a flowmeter, the plasma ozone generator has two output paths, one path goes through a third valve and then is orderly connected to a second dryer and a first ozone concentration sensor, the other path goes through a second flowmeter and then is orderly connected to a second valve and a flue gas reaction chamber, flue gas is input into the flue gas reaction chamber, an ultrasonic generator is arranged in the flue gas reaction chamber, liquid water orderly goes through a forth valve, a third flowmeter and an ultrasonic oscillator and then is fed into the flue gas reaction chamber, through ultrasonic wave activation action on water and ultrasonic wave mass transfer enhancement effects, when flue gas and ozone go through water mist subjected to ultrasonic treatment and then enter the reaction chamber, gas and water mist in the reaction chamber are subjected to activation under ultrasonic wave action and produce a lot of hydroxyl radicals and other active particles and SO2 and NOX in the flue gas are removed.
Description
Technical field
The invention belongs to fume treatment field, being specifically related to the fume treatment field that in ship power system, diesel combustion produces, is a kind of diesel engine flue gas desulfurization and denitrification device.
Background technology
Diesel engine is in an irreplaceable position in ship power system, but due to reasons such as the mist formation time produced when diesel engine works are short, CONCENTRATION DISTRIBUTION is uneven, temperature is too high and maximum combustion pressure is high, in diesel combustion process, except producing normal combustion product, also can produce a large amount of harmful substance, desulphurization denitration process need be carried out to harmful substance.
In the desulphurization denitration of current boat diesel engine, the denitration technology that technology is the most ripe is selective catalytic reduction (SCR), refer to and utilize reducing agent (as NH3 under the effect of catalyst, liquefied ammonia, urea) come react with the NOx in flue gas selectively and generate N2 and H2O of nontoxic pollution-free, but can ammonia leakage be there is in SCR running, at high temperature ammonia also can be oxidized to NO and form secondary pollution, SO2 flue gas high in addition can produce more ammonium sulfate, corrosion and damage equipment surface, simultaneously in course of reaction, also there is catalyst surface to be covered by dust deposition, or catalyst is because of heavy metal As and the poisoning catalysqt deactivation phenomenon caused of alkali metal oxide, and the initial investment of SCR technique and operating cost also still higher.In order to desulfurization, in boats and ships smoke processing system, also will install desulfurizer additional, system is huger.
In the desulphurization denitration technology of boat diesel engine, the method researched and developed has the flue gas desulfurization and denitrification method of electronic beam method and pulsed discharge plasma, and these two kinds of square ratio juris are the neutral gas molecule (N utilized in high energy electron and flue gas
2, O
2, H
2o etc.) collision, produce free radical (O, the O of some activity
3, OH, HO
2deng), the SO in these free radicals and flue gas
2, NO
xmolecular reaction generates SO
3, NO
x, sulfuric acid and nitric acid.But this technology power consumption very large (accounting for 3% of generated energy), the energy intensity of corona discharge pulse is higher than DC corona discharge about 1 times, but the mean electron energy in passage is only 2 ~ 3eV, and only have the electronics of a few percent for the formation of on hydroxyl and oxidation sweetening denitration reaction thereof, pulse width is 10 μ s, burst length dutycycle is too little, for 10-3 ~ 10-2, cause the electron density of discharge space too low, available electron is less, fractional active volume is too low, is 10-5 ~ 10-4, makes electron concentration spy in electric discharge field low equally.Nanosecond class pulse generator for EDM manufacturing technology difficulty is high simultaneously, and this greatly hinders the application industrially of plasma pulse corona discharge.And electronic beam method, the problems such as capacity usage ratio is low, and electron gun is expensive, and the life-span of electron gun and target window is short, and device structure is complicated, and floor space is large, and X-ray shielding not easily solves with protection question, the huge heat exchanger that first lowering the temperature of simultaneously needing to increase is heated up afterwards.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides the flue gas desulfurization and denitrification device of a kind of low cost based on hydroxyl radical free radical, small size, the ultrasonic wave with Green Chemistry characteristic and ozone.
To achieve these goals, the present invention by the following technical solutions: the present invention includes a plasma ozone generator, air enters the first drier through the first valve, connection traffic meter between the first drier and plasma ozone generator; Plasma ozone generator has two-way to export, one tunnel the 3rd valve connects the second drier and the first ozone concentration sensor successively, another road connects the second valve and smoke reaction chamber successively through second gauge, flue gas input smoke reaction chamber, and smoke reaction arranges supersonic generator in chamber; Liquid water passes into smoke reaction chamber successively after the 4th valve, the 3rd flowmeter, ultrasonic oscillation device; The gas exported from smoke reaction chamber enters the 3rd drier, and the output of the 3rd drier connects the second ozone gas concentration sensor and residual ozone absorption plant successively.
Further, the working power of plasma ozone generator is made up of transformer and inverter, inverter is connected to controller, first ozone concentration sensor and the second ozone gas concentration sensor are respectively through holding wire connection control device and respectively by measured ozone concentration input control device, two kinds of ozone concentration values contrast by controller, and the numerical values recited according to contrast controls working power.
Pass into SO in ozone in smoke reaction chamber and flue gas
2mole ratio is not higher than NO in 4:1, ozone and flue gas
xmole ratio not higher than 3:1.
The concentration of ozone exported from plasma ozone generator is 100 ~ 400g/m
3; Temperature in smoke reaction chamber remains on 60-80
oc.
The advantage that the present invention has after adopting technique scheme is:
1, using ultrasound ripple of the present invention acts on and hyperacoustic strengthening effect of mass transmitting intensifying of water, when flue gas, ozone, water smoke through ultrasonic process enters reaction chamber, gas in reaction chamber and water smoke are again by ultrasonic activation process, produce great amount of hydroxy group free radical and other band active particles, remove the SO in flue gas
2and NO
x.
2, in the present invention, water smoke flow and ozone amount relevant with flue gas flow, if only containing single SO in flue gas
2or NO
xtime, by controlling the SO of ozone and flue gas
2mole ratio and ozone and NO
xmole ratio, avoid ozone waste, leak and cause Photochemical effects.
3, gas source when the present invention works is air, and the raw material producing ozone and hydroxyl is oxygen and water, and invest minimum, operating cost is low, and technique is simple, reduces operating cost and running cost.Non-secondary pollution after fume treatment, device volume is less, does not almost have the pressure loss in fume treatment process.The SO of various fire coal, fuel industrial boiler and diesel engine vent gas can be widely used in
2with NO
xremove.
4, do not use any catalyst, solvent and absorbent when the present invention works, avoid the pollution and energy consumption problem that use or produce and produce in catalyst, absorbent, dissolving agent process.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the general structure connection diagram of the flue gas desulfurization and denitrification device of ultrasonic wave of the present invention and ozone;
Fig. 2 is the structure for amplifying front view in smoke reaction chamber in Fig. 1;
Fig. 3 is the right view of Fig. 2.
In figure: 1. air; 2. the first valve; 3. the first drier, 4. first-class gauge; 5. plasma ozone generator; 6. transformer; 7. inverter; 8. controller; 9. a 220V power frequency AC; 10. the second drier; 11. first ozone concentration sensors; 12. smoke reaction chambeies; 13. the 3rd driers; 14. second ozone concentration sensors; 15. residual ozone absorption plants; Flue gas after 16. process; 17. flue gases; 18. supersonic generators; 19. the 2nd 220V power frequency ACs; 20. the 3rd 220V power frequency ACs; 21. water; 22. second gauge; 23. second valves; 24. the 3rd valves; 25. the 3rd flowmeters; 26. the 4th valves; 27. ultrasonic oscillation devices; 121. exhanst gas outlet; 122. ozone entrances; 123. gas approach; 124; Band energy water spray painting entrance.
Detailed description of the invention
See Fig. 1, the present invention includes a plasma ozone generator 5, arrange gas-drying apparatus 3 in the front end of plasma ozone generator 5, air 1 gas enters the first drier 3 by the first valve 2, between the first drier 3 and plasma ozone generator 5, connect first-class gauge 4.Air 1 gas enters the first drier 3 by the first valve 2, then enters in plasma ozone generator 5 through first-class gauge 4.
Air 1 is dry through the first drier 3, can produce high-concentrated ozone after making to pass into plasma ozone generator 5, is 100 ~ 400g/m from the concentration of the high-concentrated ozone of plasma ozone generator 5 output
3.
The working power of plasma ozone generator 5 is high frequency and high voltage power supply or high frequency pulse power supply, and working power is made up of transformer 6 and inverter 7, and inverter 7 is connected to controller 8.In Fig. 1, after 220V power frequency AC 9 via controller 8, inverter 7 and transformer 6, power frequency 220V voltage transition is become high-frequency high-voltage, high-frequency high-voltage is inputted plasma ozone generator 5, for plasma generator 5 provides power supply.
Air 1 is processed into ozone (O in plasma ozone generator 5
3) export afterwards, the concentration of ozone determines by inputting in plasma ozone generator 5 flow of gas and the discharge voltage of high frequency voltage power and discharge frequency.Plasma ozone generator 5 has two-way to export, and a road the 3rd valve 24 connects the second drier 10, first ozone concentration sensor 11 successively, and another road connects the second valve 23, smoke reaction chamber 12 successively through second gauge 22.First ozone concentration sensor 11 is for measuring the concentration of the ozone exported from plasma ozone generator 5.Ozone passes into smoke reaction chamber 12 by second gauge 22 and the second valve 23 simultaneously.Meanwhile, the flue gas 17 that diesel combustion produces is inputted smoke reaction chamber 12.
4th valve 26 connects the 3rd flowmeter 25, ultrasonic oscillation device 27 and smoke reaction chamber 12 successively.Liquid water 21 is successively through the 4th valve 26, the 3rd flowmeter 25 and ultrasonic oscillation device 27, water makes water atomization by cavitation effect under hyperacoustic condition, reduce the viscosity of water, there is certain energy simultaneously, this water smoke with certain energy is passed in smoke reaction chamber 12.
In smoke reaction chamber 12, arrange supersonic generator 18, supersonic generator 18 provides working power by the 2nd 220V power frequency AC 19, and ultrasonic oscillation device 27 provides working power by the 3rd 220V power frequency AC 20.
First ozone concentration sensor 11 and the second ozone gas concentration sensor 14 are respectively through holding wire connection control device 8, by in measured ozone concentration input control device 8, two kinds of ozone concentration values contrast by controller 8, controller 8 controls high-frequency and high-voltage power supply according to contrasted numerical values recited, control flow and the discharge voltage of plasma ozone generator 5 source of the gas, thus control the output of ozone, with the ozone amount regulating plasma ozone generator 5 to export, prevent ozone concentration too high, avoid finally forming photochemical fog.Pass into SO in ozone in smoke reaction chamber 12 and flue gas
2mole ratio not higher than 4:1, NO in ozone and flue gas
xmole ratio not higher than 3:1, can avoid ozone waste and leak and cause Photochemical effects.
See Fig. 2 and Fig. 3, the chamber wall in smoke reaction chamber 12 has exhanst gas outlet 121, ozone entrance 122, gas approach 123 and band energy water spray painting entrance 124.Band energy water spray painting entrance 124 connects ultrasonic oscillation device 27 through pipeline, gas approach 123 passes into flue gas 17 through pipeline, ozone entrance 122 connects the second valve 23 through pipeline, in smoke reaction chamber 12, pass into ozone, and exhanst gas outlet 121 connects the 3rd drier 13 through pipeline.Exhanst gas outlet 121 is positioned on the upper chambers locular wall of smoke reaction chamber 12, and ozone entrance 122, gas approach 123 and band energy water spray painting entrance 124 are positioned on the lower chamber locular wall in smoke reaction chamber 12.Gas approach 123 and band energy water spray painting entrance 124 are arranged face-to-face.Supersonic generator 18 is arranged in the bottom in smoke reaction chamber 12, is stretched into by the bottom ports in smoke reaction chamber 12.Ozone entrance 122 and band energy water spray painting entrance 124 adopt Ge Shanshi structure, and when ozone passes into smoke reaction chamber 12, the number of ozone entrance 122 adopts lattice coral mode to arrange according to exhaust gas volumn, and ozone adopts lattice coral mode to spray into smoke reaction chamber 12.When water smoke with energy passes into smoke reaction chamber 12, the number of band energy water spray painting entrance 124 also adopts lattice coral mode to arrange according to exhaust gas volumn, adopts lattice coral mode to spray into.Like this, ozone, ultrasonic wave, flue gas and band energy water smoke is made to take tangentially to mix between two in smoke reaction chamber 12.
Flue gas 17, the water smoke with certain energy, ozone and ozone with active oxygen particle pass in smoke reaction chamber 12 together, tangentially mix under the effect of supersonic generator 18, chemical reaction occur and forms great amount of hydroxy group free radical, be used for desulphurization denitration.Temperature in smoke reaction chamber 12 remains on 60-80
oc.
The output that gas after desulphurization denitration completes outputs to the 3rd drier the 13, three drier 13 connects the second ozone gas concentration sensor 14 and residual ozone absorption plant 15 successively.Gas after exporting drier 13 measures residual ozone concentration by the second ozone gas concentration sensor 14, reaches SO
2, NO
xthe gas of discharge standard is discharged in air after residual ozone absorption plant 15 again.
Claims (6)
1. the flue gas desulfurization and denitrification device of a ultrasonic wave and ozone, it is characterized in that: comprise a plasma ozone generator (5), air enters the first drier (3) through the first valve (2), connects first-class gauge (4) between the first drier (3) and plasma ozone generator (5); Plasma ozone generator (5) has two-way to export, one tunnel the 3rd valve (24) connects the second drier (10) and the first ozone concentration sensor (11) successively, another road connects the second valve (23) and smoke reaction chamber (12) successively through second gauge (22), flue gas input smoke reaction chamber (12), arranges supersonic generator (18) in smoke reaction chamber (12); Liquid water passes into smoke reaction chamber (12) successively after the 4th valve (26), the 3rd flowmeter (25), ultrasonic oscillation device (27); The gas exported from smoke reaction chamber (12) enters the 3rd drier (13), and the output of the 3rd drier (13) connects the second ozone gas concentration sensor (14) and residual ozone absorption plant (15) successively.
2. the flue gas desulfurization and denitrification device of ultrasonic wave and ozone according to claim 1, it is characterized in that: the working power of plasma ozone generator (5) is made up of transformer (6) and inverter (7), inverter (7) is connected to controller (8), first ozone concentration sensor (11) and the second ozone gas concentration sensor (14) are respectively through holding wire connection control device (8) and respectively by measured ozone concentration input control device (8), two kinds of ozone concentration values contrast by controller (8), and the numerical values recited according to contrast controls working power.
3. the flue gas desulfurization and denitrification device of ultrasonic wave and ozone according to claim 1, is characterized in that: pass into SO in ozone in smoke reaction chamber (12) and flue gas
2mole ratio is not higher than NO in 4:1, ozone and flue gas
xmole ratio not higher than 3:1.
4. the flue gas desulfurization and denitrification device of ultrasonic wave and ozone according to claim 1, is characterized in that: the concentration of the ozone exported from plasma ozone generator (5) is 100 ~ 400g/m
3; Temperature in smoke reaction chamber (12) remains on 60-80
oc.
5. the flue gas desulfurization and denitrification device of ultrasonic wave and ozone according to claim 1, it is characterized in that: on the chamber wall of smoke reaction chamber (12), have exhanst gas outlet (121), ozone entrance (122), gas approach (123) and band energy water spray painting entrance (124), band energy water spray painting entrance (124) connects ultrasonic oscillation device (27), gas approach (123) passes into flue gas (17) through pipeline, ozone entrance (122) connects the second valve (23), and exhanst gas outlet (121) connects the 3rd drier (13) through pipeline.
6. the flue gas desulfurization and denitrification device of ultrasonic wave and ozone according to claim 5, it is characterized in that: exhanst gas outlet (121) is positioned on smoke reaction chamber (12) upper chambers locular wall, ozone entrance (122), gas approach (123) and band energy water spray painting entrance (124) are positioned on the lower chamber locular wall in smoke reaction chamber (12), gas approach (123) and band energy water spray painting entrance (124) are arranged face-to-face, and supersonic generator (18) is arranged in the bottom of smoke reaction chamber (12).
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| CN201510773069.2A CN105363325B (en) | 2015-11-13 | 2015-11-13 | The flue gas desulfurization and denitrification device of ultrasonic wave and ozone |
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| CN201510773069.2A CN105363325B (en) | 2015-11-13 | 2015-11-13 | The flue gas desulfurization and denitrification device of ultrasonic wave and ozone |
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| CN105363325B CN105363325B (en) | 2018-07-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749720A (en) * | 2016-03-25 | 2016-07-13 | 大连海事大学 | Denitrification system and method |
| CN106422722A (en) * | 2016-10-12 | 2017-02-22 | 广东佳德环保科技有限公司 | Sintering flue gas denitration method adopting oxidation method |
| CN111964097A (en) * | 2020-08-21 | 2020-11-20 | 江苏科技大学 | Combined staged combustion chamber oil supply device with lean oil premixing and pre-evaporation functions and working method thereof |
| CN112985943A (en) * | 2021-02-25 | 2021-06-18 | 交通运输部天津水运工程科学研究所 | Based on boats and ships tail gas plume SO2Monitored pretreatment device |
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| CN101367031A (en) * | 2008-09-12 | 2009-02-18 | 江苏大学 | Apparatus and method for generating hydroxyl radical with supersonic wave cooperated dense ionization electric discharge |
| CN202087223U (en) * | 2010-11-22 | 2011-12-28 | 大连海事大学 | Hydroxyl free-radical oxidization desulphurization denitration device in oxygen active particle injection flue |
| CN103191629A (en) * | 2013-04-09 | 2013-07-10 | 苏州市东宏环保科技有限公司 | Waste gas treatment equipment for organic refuse conversion |
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2015
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Patent Citations (3)
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| CN101367031A (en) * | 2008-09-12 | 2009-02-18 | 江苏大学 | Apparatus and method for generating hydroxyl radical with supersonic wave cooperated dense ionization electric discharge |
| CN202087223U (en) * | 2010-11-22 | 2011-12-28 | 大连海事大学 | Hydroxyl free-radical oxidization desulphurization denitration device in oxygen active particle injection flue |
| CN103191629A (en) * | 2013-04-09 | 2013-07-10 | 苏州市东宏环保科技有限公司 | Waste gas treatment equipment for organic refuse conversion |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749720A (en) * | 2016-03-25 | 2016-07-13 | 大连海事大学 | Denitrification system and method |
| CN106422722A (en) * | 2016-10-12 | 2017-02-22 | 广东佳德环保科技有限公司 | Sintering flue gas denitration method adopting oxidation method |
| CN111964097A (en) * | 2020-08-21 | 2020-11-20 | 江苏科技大学 | Combined staged combustion chamber oil supply device with lean oil premixing and pre-evaporation functions and working method thereof |
| CN111964097B (en) * | 2020-08-21 | 2022-05-10 | 江苏科技大学 | Combined staged combustion chamber oil supply device with lean oil premixing and pre-evaporation functions and working method thereof |
| CN112985943A (en) * | 2021-02-25 | 2021-06-18 | 交通运输部天津水运工程科学研究所 | Based on boats and ships tail gas plume SO2Monitored pretreatment device |
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| CN105363325B (en) | 2018-07-03 |
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Application publication date: 20160302 Assignee: Center for technology transfer Jiangsu University of Science and Technology Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2021980006173 Denomination of invention: Flue gas desulfurization and denitration device with ultrasonic and ozone Granted publication date: 20180703 License type: Common License Record date: 20210714 |
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Assignee: Center for technology transfer Jiangsu University of Science and Technology Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2021980006173 Date of cancellation: 20210826 |