CN205965447U - Optical excitation electrolysis is device of SOx/NOx control demercuration simultaneously - Google Patents
Optical excitation electrolysis is device of SOx/NOx control demercuration simultaneously Download PDFInfo
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- CN205965447U CN205965447U CN201620808505.5U CN201620808505U CN205965447U CN 205965447 U CN205965447 U CN 205965447U CN 201620808505 U CN201620808505 U CN 201620808505U CN 205965447 U CN205965447 U CN 205965447U
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Abstract
The utility model relates to an optical excitation electrolysis is device of SOx/NOx control demercuration simultaneously, optical excitation efflux bed portion is regional as the atomizing jet reaction, and it is regional that the bottom is solution, ultraviolet lamp and cooling chamber in the middle of the optical excitation efflux bed, the bottom of cooling chamber is equipped with air inlet, the top of cooling chamber is equipped with the air outlet, be equipped with flue gas entry, swirling -flow atomizing nozzle on the lateral wall of optical excitation efflux bed, optical excitation efflux bed bottom is equipped with electrolytic device, optical excitation efflux bed bottom is equipped with solution entry, solution export, and the solution exit linkage has the circulating pump, and circulating pump passing through liquids pipeline is connected with swirling -flow atomizing nozzle, flue gas entry and swirling -flow atomizing nozzle intercommunication, the exhanst gas outlet is located the top of optical excitation efflux bed, the exhanst gas outlet is connected with chlorine reclaiming device. This system has extremely strong oxidability, can realize 100% SO2 , NOx , hg0 desorption efficiency simultaneously, and the subtractive process does not have secondary pollution, has wide market perspective.
Description
Technical field
This utility model is related to flue gas pollutant control field and in particular to a kind of light excites electrolysis simultaneous SO_2 and NO removal to take off
The method and device of hydrargyrum.
Background technology
The SO of release in combustion process2NOxAnd Hg0Acid rain photochemical fog and the serious harm such as carcinogenic can be caused.Cause
This, developing effective flue gas desulfurization and denitrification demercuration method is one of vital task of various countries' environmental protection scientific and technical personnel.In the last few years, to the greatest extent
Pipe is developed substantial amounts of flue gas desulfurization and denitrification demercuration technology, but the limitation due to human cognitive process and science and technology are sent out
Exhibition gradual, existing various desulfurization denitration demercuration technology research and development originally only for Single Pollution thing be removing target, one
As cannot realize while flue gas multiple pollutant removing.For example, the more flue gas desulfurization and denitrification technology of application is predominantly wet at present
Method limestone-gypsum method flue gas desulfurization technology and ammine selectivity catalytic reduction method.Although both approaches can individually take off
Sulfur denitration, but all cannot realize removing in a reactor simultaneously.Although the superposition of combining of two kinds of techniques uses and can realize
Simultaneous SO_2 and NO removal, but also result in whole system complexity simultaneously, floor space is big, the deficiency such as investment and operating cost height.In addition,
With the continuous improvement to environmental requirement for the mankind, the laws and regulations for mercury in flue gas emission control are also gradually put into effect, but at present
A kind of cost-effective flue gas demercuration technology is not also had to obtain large-scale commercial applications application.If in existing desulfurization and denitrating system
Afterbody increases single flue gas mercury removal system again, then initial outlay and the operating cost that certainly will will result in whole system are further
Sharply increase, be finally difficult to obtain large-scale commercial applications application in developing country.
In sum if it is possible to realize removing by oxysulfide nitrogen oxides and hydrargyrum, then in a reactor simultaneously
It is expected to substantially reduce the complexity of system and floor space, and then reduce investment and the operating cost of system.Wet type flue gas desulphurization
Technology is a kind of traditional fume treatment technology, has the little technological process of initial cost simply and is easily achieved multi-pollutant simultaneously
The features such as removing, be a kind of flue gases purification with good development and application prospect, but traditional wet type flue gas desulphurization skill
The progress of art is but relatively slow always, and its main cause is that in flue gas nitrogen oxide and mercury element and contains 90% respectively
The Hg of the NO and 40-80% indissoluble of above indissoluble0.From double-film theory, gas molecule in space must first by gaseous state through mass transfer and
Diffusion process dissolves in liquid phase, and chemical reaction then could be occurred to be fixed in absorbing liquid, and NO and Hg0The characteristic of indissoluble makes it
Greatly increase in the absorption resistance to mass tranfer of liquid phase, only the method by regulating and controlling absorption liquid pH and temperature be difficult to significantly improve NO with
Hg0In the dissolubility of liquid phase, this characteristic causes traditional wet desulphurization denitration demercuration technology generally existing desulfuration efficiency height,
But denitration and the low deficiency of demercuration efficiency, desulfurization denitration demercuration while actually cannot realizing real.Therefore, searching can be by
NO and Hg0The effective ways being rapidly converted into readily soluble form are the keys solving this problem, are also to realize SO in flue gas2NOxWith
Hg0The important thinking of three pollutant simultaneous removings.
Utility model content
This utility model is related to the method and device that a kind of light excites electrolysis simultaneous SO_2 and NO removal demercuration, and described method is
First chlorine is prepared using electrolysis unit, and chlorine forms hypochlorite solution after being dissolved in water.Ultraviolet radiation decomposes hypochlorous acid and produces
Chlorine atom and hydroxyl are as SO2NOxHg0Oxidant, the SO in oxidation removal flue gas in light excited jet bed2NOx?
Hg0.
The ultimate principle of this utility model method and device：
1st, as shown in Figure 1, ultraviolet radiation hypochlorite solution can be measured to using electronic self-rotary resonant technology and create chlorine
Atom and hydroxyl.Therefore, ultraviolet radiation decomposes hypochlorite solution is to release to have highly active chlorine atom and hydroxyl first,
Detailed process can use following chemical reaction (1)-(7) to represent：
Cl·+H2O→OH-+·OH (6)
·O-++H2O→OH-+·OH (7)
2nd, the SO in hydroxyl oxidable removing flue gas2NOxHg0, detailed process can use following chemical reaction (8) to represent：
Hg0+·OH→HgO↓+·H (8)
NO+2·OH→HNO3+·H (9)
NO2+·OH→HNO3(10)
SO2+·2OH→H2SO4(11)
3rd, removing product is mainly sulfonitric and mercury oxide precipitation, meeting after the product separating tank of mercury oxide entrance bottom
Because self gravitation reason sinks to separating, sulphuric acid and nitric acid are all the raw materials of industry, can be recycled.The chlorine of residual in flue gas
Understand by the chlorine knockout tower absorption and separation of afterbody and cycling and reutilization.This system has extremely strong oxidisability, is capable of 100%
While desulfurization denitration demercuration efficiency, and subtractive process non-secondary pollution, there is wide market application foreground.
For realizing object above, the embodiment that this utility model adopts and requirement are as follows：
A kind of light excites the device of electrolysis simultaneous SO_2 and NO removal demercuration, is provided with a light excited jet bed, it is provided with flue gas
Inlet flue gas outlet solution entrance taphole product exit air intake air outlet slit vortex atomizing nozzle quartz
Plate uviol lamp circulating pump air-cooling apparatus electrolysis unit chlorine recovery device.
As dispersed jet conversion zone, bottom is solution region on described smooth excited jet bed top；Light excited jet bed
It is arranged symmetrically centered on uviol lamp, both sides are reative cells, centre is uviol lamp arrangement and cooling chamber, the bottom of described cooling chamber
It is provided with air intake, the top of described cooling chamber is provided with air outlet slit.
The side wall of described smooth excited jet bed is provided with smoke inlet, vortex atomizing nozzle, described smoke inlet and eddy flow
Atomizer needs setting according to live, can arrange multigroup；Described smooth excited jet bed bottom is provided with electrolysis unit；Described
Light excited jet bed bottom is provided with solution inlet, taphole, and taphole is connected with circulating pump, and circulating pump passes through liquid line
It is connected with vortex atomizing nozzle, described smoke inlet is connected with vortex atomizing nozzle；Described exhanst gas outlet is located at light excited jet
The top of bed, described exhanst gas outlet is connected with chlorine recovery device.
In light excited jet bed, the horizontal and vertical spacing of vortex atomizing nozzle will be unable to greatly very much form good drop
Atomization covers, the too little atomization covering that droplet collision will be led to merge aggravation, be equally unfavorable for drop, therefore vortex atomizing nozzle
Optimal lateral and longitudinal pitch A be respectively positioned between 20cm-50cm, and for ease of installing, horizontal spacing and longitudinal pitch keep
Equal.
Horizontal spacing between uviol lamp and quartz plate is too little to be unfavorable for that air flow cools down, and then leads to greatly very much ultraviolet to be propagated
Distance increases, and increases energy consumption, therefore optimal lateral spacing B between uviol lamp and quartz plate is located between 1cm-2cm.
The height of light excited jet bed is relevant with the time of staying/response time of flue gas, and height increases, gas residence time
Increase, removal efficiency can increase, but height is too high, reactor volume is huge, initial outlay increase, therefore light excited jet bed
Optimum height C is located between 0.5m-10m.
The width of the reative cell of light excited jet bed is too little to lead to vortex atomizing nozzle cannot launch to cover, and width is too
Conference leads to circulation pump power to increase, and the therefore optimum width D of reative cell is located at 0.1m-2m.The horizontal spacing of uviol lamp is too big
Ultraviolet radiation underpower can be led to, and too little energy expenditure will be led to increase, therefore optimal lateral spacing E of uviol lamp is located at
Between 0.1m-1m.
The length of light excited jet bed is relevant with the flow processing flue gas and floor space, and flue gas flow is bigger, needs
Reactor length longer, but floor space also accordingly increases, and finds the optimal length of light excited jet bed after both factors comprehensive
Degree F is located between 0.1m-8m.
The solution droplets diameter that vortex atomizing nozzle projects cannot provide enough contacts area greatly very much, therefore swirling flow atomizing spray
The solution droplets diameter that mouth projects is not more than 100 microns.The solution droplets exit velocity of vortex atomizing nozzle injection is too little cannot
Form enough air-flow rigidity it is impossible to quartz plate is formed with enough washing away, therefore the outlet of the solution of vortex atomizing nozzle injection
Flow velocity is not less than 1m/s.
Described method is first to prepare chlorine using electrolysis unit, and chlorine forms hypochlorite solution after being dissolved in water.Ultraviolet
Light radiation is decomposed hypochlorous acid and is produced chlorine atom and hydroxyl as SO2NOxHg0Oxidant, aoxidize de- in light excited jet bed
Except the SO in flue gas2NOxHg0.
Contain SO from boiler2NOxHg0Flue gas from smoke inlet enter light excited jet bed and with swirling flow atomizing spray
The quartz plate on directive opposite after mouth hypochlorous acid droplets mixing out.Hypochlorous acid on quartz plate decomposes product under uviol lamp radiation
Raw high activity chlorine atom and hydroxyl.SO in flue gas2NOxHg0With hydroxyl, oxidation reaction can occur in quartzy plate surface.Reaction
The oxidation product producing can be impacted cleaning by subsequent shot, thus ensureing that quartz plate has good ultraviolet light peneration.SO2?
NOxHg0Oxidation product be mainly sulfonitric and mercury oxide precipitation, enter bottom after can be recycled.
In flue gas, the chlorine of residual can be recycled by the chlorine recovery device absorption and separation Posterior circle of afterbody, the cigarette after washing
Gas enters air through exhanst gas outlet.Air-cooling apparatus provides air uviol lamp to be cooled down, to ensure uviol lamp in low temperature
Lower Effec-tive Function.This system has extremely strong oxidisability, is capable of 100% SO2NOxHg0Removal efficiency simultaneously, and de-
Except process non-secondary pollution, there is wide market application foreground.
Smoke inlet temperature is too high will to be led to be electrolysed the hypochlorous acid acceleration selfdecomposition producing, and is unfavorable for entering of subtractive process
OK.In addition, flue-gas temperature is too high also will increase uviol lamp cooling burden, therefore not higher than 180 DEG C of smoke inlet temperature, can pass through
Reactor is entered back into after increasing preposition gas cooler cooling.
Solution is too low with the liquid-gas ratio of flue gas to lead to removal effect to decline, and too high, lead to reactor fully sharp
With, therefore solution is 1L/m with the optimal liquid-gas ratio of flue gas3-50L/m3.
Chlorine in Solution sodium is main medium and the raw material of electrolytic preparation chlorine, and its concentration is too high will to lead to atomized soln to glue
Denseness increases, and increases vortex atomizing nozzle flow resistance and atomization difficulty, also can reduce gas solubility simultaneously, and concentration is too low
Sufficient concentrations of chlorine then cannot be produced, the therefore optium concentration of Chlorine in Solution sodium is 0.01mol/L-2mol/L.
The pH of solution is too high to be unfavorable for hypochlorous stable, is also unfavorable for the removing of pollutant, the therefore pH of solution requires
Not higher than 7.5.Solution temperature is too high will to lead to hypochlorous acid to decompose and the decline of chlorine leach degree, and therefore solution temperature is not higher than 75
℃.
In flue gas, the concentration of pollutant is too high can lead to discharge to be unable to reach environmental requirement, and therefore mercury in flue gas concentration is not high
In 500 μ g/m3, SO in flue gas2Concentration is not higher than 10000ppm, NO in flue gasxConcentration is not higher than 5000ppm.
Ultraviolet radiation intensity is higher, and removal efficiency is better, but energy consumption also will greatly improve, therefore ultraviolet light Net long wave radiation is strong
Spend for 10 μ W/cm2-200μW/cm2.
Ultraviolet wavelength is shorter, and the photon energy of release is bigger, and the hypochlorous ability of decomposition is stronger, but propagation distance is obvious
Decline, that is, disposal ability is not enough, therefore ultraviolet effective wavelength is 180nm-366nm.
According to the aggregative indicatores such as the available floor space for the treatment of quantity and pollutant removing efficiency, light excited jet bed
It can be an alone or two or more series connection (series connection can increase removal efficiency) or used in parallel
(parallel connection can increase the exhaust gas volumn of process).
May be with the presence of a small amount of chlorine in flue gas after washing, afterbody is provided with the chlorine containing time chlorination carbon and reclaims dress
Put, recovery chlorine, the recyclable utilization of the chlorine after recovery can be washed further.Can produce a large amount of in uviol lamp running
Heat, need when the too high operational efficiency that will substantially reduce uviol lamp of temperature and service life, therefore system operation arrange
The chiller of a set of utilization air circulation, cooling air volume can determine according to exit flow temperature, typically keeps ultraviolet
Lamp running temperature is below 55 degrees Celsius.
Advantage of the present utility model and remarkable result：
A kind of light described in the utility model excites the method and device of electrolysis simultaneous SO_2 and NO removal demercuration, has equipment letter
List, initial cost are little, SO2NOxHg0While removal efficiency is high, whole subtractive process non-secondary pollution many advantages, such as, have
Wide exploitation and that prospect of commercial Application.
Brief description
Fig. 1. a kind of light excites the chlorine atom of electrolysis and the general figure of electron spin resonance light of hydroxyl.
Fig. 2 is the front view of light excited jet bed and structural representation in this utility model.
Fig. 3 is the vortex atomizing nozzle arrangement schematic diagram of light excited jet bed in this utility model.
Fig. 4 is the ultraviolet lamp tube arrangement schematic diagram of light excited jet bed in this utility model.
Specific embodiment
A kind of light excites the device of electrolysis simultaneous SO_2 and NO removal demercuration, is provided with a light excited jet bed, it is provided with flue gas
Entrance 1 exhanst gas outlet, 2 solution inlet, 3 taphole, 4 product exit, 5 air intake, 6 air outlet slit 7 swirling flow atomizing sprays
Mouth 8 quartz plate, 9 uviol lamp, 10 circulating pump, 11 air-cooling apparatus, 12 electrolysis unit 13 chlorine recovery device 14.
Equipped with sodium chloride solution, as dispersed jet conversion zone, reactor is with ultraviolet on top for light excited jet bed bottom
It is arranged symmetrically centered on lamp 10, both sides are reative cell (indicating atomized drop part in Fig. 1), centre is uviol lamp arrangement and cools down
Room (does not have atomized drop part) around uviol lamp in Fig. 1.
Described method is first to prepare chlorine using electrolysis unit 13, and chlorine forms hypochlorite solution after being dissolved in water.Purple
Outer light radiation is decomposed hypochlorous acid and is produced chlorine atom and hydroxyl as SO2NOxHg0Oxidant, in light excited jet bed aoxidize
SO in removing flue gas2NOxHg0.Contain SO from boiler2NOxHg0Flue gas from smoke inlet enter light excited jet bed
And with vortex atomizing nozzle 8 hypochlorous acid droplets mixing out after directive opposite quartz plate 9.Hypochlorous acid on quartz plate 9 exists
Uviol lamp 10 radiation is lower to decompose generation high activity chlorine atom and hydroxyl.
SO in flue gas2NOxHg0With hydroxyl, oxidation reaction can occur on quartz plate 9 surface.The oxidation that reaction produces is produced
Thing can be impacted cleaning by subsequent shot, thus ensureing that quartz plate has good ultraviolet light peneration.SO2NOxHg0Oxidation
Product is mainly sulfonitric and mercury oxide precipitation, can be recycled after entering bottom.
In flue gas, the chlorine of residual can be recycled by the chlorine recovery device absorption and separation Posterior circle of afterbody, the cigarette after washing
Gas enters air through exhanst gas outlet.
Air-cooling apparatus 12 provides air uviol lamp to be cooled down, to ensure uviol lamp Effec-tive Function at low temperature.
This system has extremely strong oxidisability, is capable of 100% SO2NOxHg0Removal efficiency simultaneously, and subtractive process is no secondary
Pollution, has wide market application foreground.
In light excited jet bed, the horizontal and vertical spacing of vortex atomizing nozzle 8 will be unable to greatly very much form good liquid
Drip atomization cover, too little will lead to droplet collision merge aggravation, be equally unfavorable for drop atomization cover, therefore swirling flow atomizing spray
The optimal lateral of mouth 8 and longitudinal pitch A are respectively positioned between 20cm-50cm, and for ease of installing, horizontal spacing and longitudinal pitch are protected
Hold equal.
Horizontal spacing between uviol lamp 10 and quartz plate 9 is too little to be unfavorable for that air flow cools down, and then leads to ultraviolet greatly very much
Propagation distance increases, and increases energy consumption, therefore optimal lateral spacing B between uviol lamp 10 and quartz plate 9 is located between 1cm-2cm.
The height of light excited jet bed is relevant with the time of staying/response time of flue gas, and height increases, gas residence time
Increase, removal efficiency can increase, but height is too high, reactor volume is huge, initial outlay increase, therefore light excited jet bed
Optimum height C is located between 0.5m-10m.
The width of the reative cell of light excited jet bed is too little to lead to vortex atomizing nozzle cannot launch to cover, and width is too
Conference leads to circulation pump power to increase, and the therefore optimum width D of reative cell is located at 0.1m-2m.
The too conference of the horizontal spacing of uviol lamp 10 leads to ultraviolet radiation underpower, and too little will lead to energy expenditure increase
Plus, therefore optimal lateral spacing E of uviol lamp 10 is located between 0.1m-1m.
The length of light excited jet bed is relevant with the flow processing flue gas and floor space, and flue gas flow is bigger, needs
Reactor length longer, but floor space also accordingly increases, and finds the optimal length of light excited jet bed after both factors comprehensive
Degree F is located between 0.1m-8m.
The solution droplets diameter that vortex atomizing nozzle 8 projects cannot provide enough contacts area greatly very much, therefore swirling flow atomizing
The solution droplets diameter that nozzle 8 projects is not more than 100 microns.The solution droplets exit velocity that vortex atomizing nozzle 8 projects is too little
Enough air-flow rigidity cannot be formed it is impossible to quartz plate 9 is formed with enough washing away, therefore the solution that vortex atomizing nozzle 8 projects
Exit velocity be not less than 1m/s.
Smoke inlet temperature is too high will to be led to be electrolysed the hypochlorous acid acceleration selfdecomposition producing, and is unfavorable for entering of subtractive process
OK.In addition, flue-gas temperature is too high also will increase uviol lamp cooling burden, therefore not higher than 180 DEG C of smoke inlet temperature, can pass through
Reactor is entered back into after increasing preposition gas cooler cooling.
Solution is too high with the liquid-gas ratio of flue gas to lead to removal effect to decline, and too low, lead to reactor fully sharp
With, therefore solution is 1L/m with the optimal liquid-gas ratio of flue gas3-50L/m3.Chlorine in Solution sodium is the main medium of electrolytic preparation chlorine
And raw material, its concentration is too high will to lead to atomized soln viscosity to increase, and increase vortex atomizing nozzle flow resistance and atomization difficulty,
Also gas solubility can be reduced simultaneously, and concentration is too low, cannot produce sufficient concentrations of chlorine, therefore Chlorine in Solution sodium
Optium concentration is 0.01mol/L-2mol/L.
The pH of solution is too high to be unfavorable for hypochlorous stable, is also unfavorable for the removing of pollutant, the therefore pH of solution requires
Not higher than 7.5.Solution temperature is too high will to lead to hypochlorous acid to decompose and the decline of chlorine leach degree, and therefore solution temperature is not higher than 75
℃.In flue gas, the concentration of pollutant is too high can lead to discharge to be unable to reach environmental requirement, and therefore mercury in flue gas concentration is not higher than 500
μg/m3, SO in flue gas2Concentration is not higher than 10000ppm, NO in flue gasxConcentration is not higher than 5000ppm.
Ultraviolet radiation intensity is higher, and removal efficiency is better, but energy consumption also will greatly improve, therefore ultraviolet light Net long wave radiation is strong
Spend for 10 μ W/cm2-200μW/cm2.Ultraviolet wavelength is shorter, and the photon energy of release is bigger, and the hypochlorous ability of decomposition is stronger,
But propagation distance is decreased obviously, that is, disposal ability is not enough, and therefore ultraviolet effective wavelength is 180nm-366nm.
It is below the optimum embodiment of technical solutions of the utility model：
In light excited jet bed, horizontal and vertical spacing A of vortex atomizing nozzle is 30cm to embodiment 1..Uviol lamp
Horizontal spacing B and quartz plate between is 1cm.The height C of light excited jet bed is between 1.0m.The width D of reative cell is
0.6m.The horizontal spacing E of uviol lamp is 0.1m.Length F of light excited jet bed is 1.0m.The solution that vortex atomizing nozzle projects
Liquid-drop diameter is 80 microns, and exit velocity is 2m/s.Smoke inlet temperature is 100 DEG C, and liquid-gas ratio is 8L/m3, sodium chloride concentration
For 0.1mol/L, pH value of solution is 4.5, and solution temperature is 45 DEG C, and mercury in flue gas concentration is 100 μ g/m3, SO in flue gas2Concentration
5000ppm, NO in flue gasxConcentration 500ppm, ultraviolet radiation intensity is 80 μ W/cm2, ultraviolet wavelength is 254nm.Small-sized
Result in experimental system is：The efficiency of desulfurization denitration demercuration is respectively 86.6% 54.6% 80.7%.
In light excited jet bed, horizontal and vertical spacing A of vortex atomizing nozzle is 30cm to embodiment 2..Uviol lamp
Horizontal spacing B and quartz plate between is 1cm.The height C of light excited jet bed is between 1.0m.The width D of reative cell is
0.6m.The horizontal spacing E of uviol lamp is 0.1m.Length F of light excited jet bed is 1.0m.The solution that vortex atomizing nozzle projects
Liquid-drop diameter is 80 microns, and exit velocity is 2m/s.Smoke inlet temperature is 100 DEG C, and liquid-gas ratio is 8L/m3, sodium chloride concentration
For 0.4mol/L, pH value of solution is 4.5, and solution temperature is 45 DEG C, and mercury in flue gas concentration is 100 μ g/m3, SO in flue gas2Concentration
5000ppm, NO in flue gasxConcentration 500ppm, ultraviolet radiation intensity is 80 μ W/cm2, ultraviolet wavelength is 254nm.Small-sized
Result in experimental system is：The efficiency of desulfurization denitration demercuration is respectively 95.9% 78.6% 90.3%.
In light excited jet bed, horizontal and vertical spacing A of vortex atomizing nozzle is 30cm to embodiment 3..Uviol lamp
Horizontal spacing B and quartz plate between is 1cm.The height C of light excited jet bed is between 1.0m.The width D of reative cell is
0.6m.The horizontal spacing E of uviol lamp is 0.1m.Length F of light excited jet bed is 1.0m.The solution that vortex atomizing nozzle projects
Liquid-drop diameter is 80 microns, and exit velocity is 2m/s.Smoke inlet temperature is 100 DEG C, and liquid-gas ratio is 8L/m3, sodium chloride concentration
For 0.2mol/L, pH value of solution is 4.5, and solution temperature is 45 DEG C, and mercury in flue gas concentration is 60 μ g/m3, SO in flue gas2Concentration
5000ppm, NO in flue gasxConcentration 300ppm, ultraviolet radiation intensity is 80 μ W/cm2, ultraviolet wavelength is 254nm.Small-sized
Result in experimental system is：The efficiency of desulfurization denitration demercuration is respectively 93.9% 75.1% 87.2%.
In light excited jet bed, horizontal and vertical spacing A of vortex atomizing nozzle is 30cm to embodiment 4..Uviol lamp
Horizontal spacing B and quartz plate between is 1cm.The height C of light excited jet bed is between 1.0m.The width D of reative cell is
0.6m.The horizontal spacing E of uviol lamp is 0.1m.Length F of light excited jet bed is 1.0m.The solution that vortex atomizing nozzle projects
Liquid-drop diameter is 80 microns, and exit velocity is 2m/s.Smoke inlet temperature is 100 DEG C, and liquid-gas ratio is 8L/m3, sodium chloride concentration
For 0.4mol/L, pH value of solution is 4.5, and solution temperature is 45 DEG C, and mercury in flue gas concentration is 100 μ g/m3, SO in flue gas2Concentration
5000ppm, NO in flue gasxConcentration 500ppm, ultraviolet radiation intensity is 120 μ W/cm2, ultraviolet wavelength is 254nm.Small-sized
Result in experimental system is：The efficiency of desulfurization denitration demercuration is respectively 100% 89.6% 98.4%.
In light excited jet bed, horizontal and vertical spacing A of vortex atomizing nozzle is 30cm to embodiment 5..Uviol lamp
Horizontal spacing B and quartz plate between is 1cm.The height C of light excited jet bed is between 1.0m.The width D of reative cell is
0.6m.The horizontal spacing E of uviol lamp is 0.1m.Length F of light excited jet bed is 1.0m.The solution that vortex atomizing nozzle projects
Liquid-drop diameter is 80 microns, and exit velocity is 2m/s.Smoke inlet temperature is 100 DEG C, and liquid-gas ratio is 8L/m3, sodium chloride concentration
For 0.4mol/L, pH value of solution is 4.5, and solution temperature is 45 DEG C, and mercury in flue gas concentration is 60 μ g/m3, SO in flue gas2Concentration
3000ppm, NO in flue gasxConcentration 400ppm, ultraviolet radiation intensity is 160 μ W/cm2, ultraviolet wavelength is 254nm.Small-sized
Result in experimental system is：The efficiency of desulfurization denitration demercuration is respectively 100% 100% 100%.
Understand through the Comprehensive Correlation of above example, removal effect while embodiment 5 has optimal, desulphurization denitration takes off
The efficiency of hydrargyrum is respectively 100% 100% 100%, can consult and use as most preferred embodiment.
Claims (6)
1. a kind of light excite electrolysis simultaneous SO_2 and NO removal demercuration device it is characterised in that：Described device is light excited jet bed,
It is provided with smoke inlet exhanst gas outlet solution inlet taphole product exit air intake air outlet slit swirling flow atomizing
Nozzle uviol lamp circulating pump air-cooling apparatus electrolysis unit chlorine recovery device；Described smooth excited jet bed top is made
For dispersed jet conversion zone, bottom is solution region；It is uviol lamp and cooling chamber in the middle of described smooth excited jet bed, described cold
But the bottom of room is provided with air intake, and the top of described cooling chamber is provided with air outlet slit；On the side wall of described smooth excited jet bed
It is provided with smoke inlet, vortex atomizing nozzle；Described smooth excited jet bed bottom is provided with electrolysis unit；Described smooth excited jet bed bottom
Portion is provided with solution inlet, taphole, and taphole is connected with circulating pump, and circulating pump passes through liquid line and vortex atomizing nozzle
Connect, described smoke inlet is connected with vortex atomizing nozzle；Described exhanst gas outlet is located at the top of light excited jet bed, described cigarette
Gas outlet is connected with chlorine recovery device.
2. a kind of light according to claim 1 excite electrolysis simultaneous SO_2 and NO removal demercuration device it is characterised in that：Described
Cooling chamber is surrounded using quartz plate, and uviol lamp connects air located at the central authorities of cooling chamber, described air-cooling apparatus by pipeline
Entrance.
3. a kind of light according to claim 1 excite electrolysis simultaneous SO_2 and NO removal demercuration device it is characterised in that：In light
In excited jet bed, horizontal and vertical spacing A of vortex atomizing nozzle is respectively positioned between 20cm-50cm, and horizontal spacing and vertical
Keep equal to spacing.
4. a kind of light according to claim 1 excite electrolysis simultaneous SO_2 and NO removal demercuration device it is characterised in that：Ultraviolet
Horizontal spacing B between lamp and quartz plate is located between 1cm-2cm, and the height C of light excited jet bed is located between 0.5m-10m,
The width D of reative cell is located at 0.1m-2m.
5. a kind of light according to claim 1 excite electrolysis simultaneous SO_2 and NO removal demercuration device it is characterised in that：Ultraviolet
The horizontal spacing E of lamp is located between 0.1m-1m；Length F of light excited jet bed is located between 0.1m-8m；Vortex atomizing nozzle
The solution droplets diameter projecting is not more than 100 microns, and exit velocity is not less than 1m/s.
6. a kind of light according to claim 1 excites the device of electrolysis simultaneous SO_2 and NO removal demercuration it is characterised in that described
Electrolyte used by electrolytic chlorine gas in electrolysis unit is sodium chloride or the solution of hydrogen chloride configuration, and the sea water of sodium chloride-containing is chloride
Change the mixture of one or more of the industrial wastewater of sodium or hydrogen chloride.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106139841A (en) * | 2016-04-18 | 2016-11-23 | 江苏大学 | A kind of method and device of light radiation electrolysis coupling demercuration |
| CN110904466A (en) * | 2019-11-12 | 2020-03-24 | 江苏乾宝生物科技有限公司 | Electrolytic sodium hypochlorite generator system and operation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106139841A (en) * | 2016-04-18 | 2016-11-23 | 江苏大学 | A kind of method and device of light radiation electrolysis coupling demercuration |
| CN106139841B (en) * | 2016-04-18 | 2019-01-08 | 江苏大学 | A kind of method and device of light radiation electrolysis coupling demercuration |
| CN110904466A (en) * | 2019-11-12 | 2020-03-24 | 江苏乾宝生物科技有限公司 | Electrolytic sodium hypochlorite generator system and operation method |
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