CN103949153B - A kind of method and device utilizing light to help Fenton's reaction purifying smoke - Google Patents

A kind of method and device utilizing light to help Fenton's reaction purifying smoke Download PDF

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CN103949153B
CN103949153B CN201410166086.5A CN201410166086A CN103949153B CN 103949153 B CN103949153 B CN 103949153B CN 201410166086 A CN201410166086 A CN 201410166086A CN 103949153 B CN103949153 B CN 103949153B
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luminous energy
fenton
warehouse
reaction
energy storehouse
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CN103949153A (en
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傅国琳
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CHE DAOLAN
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes

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  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
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Abstract

The invention discloses a kind of method and device utilizing light to help Fenton's reaction purifying smoke, the method is that light helps Fenton's reaction that granule dust is converted into carbon dioxide, sulfur dioxide becomes sulphuric acid, this device includes luminous energy storehouse and cleaning position, therefore, the interests of the retrieval of sulfuric acid of this device exceed the operating cost of equipment itself, and user can obtain more profit.Additionally, this technology is very flexible, it can be included into the existing system of coal-burning boiler for improving its effectiveness, or replaces original old system completely.The present invention is the most applicable at any coal-burning boiler industrial market, including cement plant, steel plant, trash burning factory of municipal government, clinical waste combustion plant, chlorine maker, paper pulp and paper production factory etc..

Description

A kind of method and device utilizing light to help Fenton's reaction purifying smoke
(1) technical field:
The present invention relates to a kind of luminous energy purification method and device, a kind of utilize light to help Fenton's reaction purifying smoke Method and device.
(2) background technology:
Under the form of China's economic sustained and rapid development, energy resource consumption demand steeply rises;Only as a example by coal, reform Since exploitation, the demand incremental change of annual coal is about 8~12%, and the maximum dirt disease produced with this is exactly serious air Pollute.
The China of today is one of the most serious country of atmospheric pollution in the world (being only second to India).Not long ago in state of China The theme proposing ' eliminating the trouble of common people's cardiopulmonary ' special in the regular meeting of business institute;Pollution administration has been combined with people's state, the people's livelihood Come, make a decision to forgo and pollute the medicated cap of big country.Chinese Government determine not only to soar economically also will in the environment for country, The people, offspring or even the world make positive contribution.On the road of China Reconstructs, new cleaning fuel is by reserves and state Border politics restriction and the replacement kinetic energy that domestic industry demand is main cannot be become.Therefore during, coal can be the most still The kinetic energy energy that state is main.Constantly increase exhibition along with industrial requirement and mean that atmospheric pollution will be more serious, effectively alleviate with anti- Pollution treatment dye will be a heavy problem forever.
It is known that serious atmospheric pollution can bring the irreversible disaster of all of biology on the earth, and pollute Air is mainly derived from the industrial fumes containing a large amount of poisonous and harmful substances.These noxious fume overwhelming majority is by coal burning Produced by during.But, there is no absolute cleaning coal in the world, only produce because of the difference of geological conditions is poisonous The coal resources that content of material proportion is different.Such as, the coal that NORTH CHINA is produced is the low-sulfur coal of high-quality, and sulfur content only has 1% ~2%;And its sulfur content of coal that Yunnan, Guizhou and Inner Mongol are produced can reach more than 5%.According to measuring and calculating: in Chinese industrial flue dust Sulfur dioxide annual emissions be up to more than 20,000,000 tons.In the city of 113 atmospheric pollution keypoint treatments, there are 40 cities SO2 emissions exceed the secondary standard line of country's formulation, and 39 cities are even inferior to country's grade III Standard line!By air Pollute the Acid Rain Pollution caused and wreak havoc the territory of China 1/3rd.The fastest pollution gone together therewith of industrial process speedup refers to Number will be the highest, and relevant department can be the most difficult to the control of environment.
Chinese over nearly 20 years continual technical research is carried out in flue dust desulfurization.Dioxy is controlled with flue gas desulfurization technique The pollution changing sulfur is an important step in Environmental Protection in China application.Just calculate with low-sulfur coal (sulfur content 1%): combustion one Ton coal can produce the sulfur dioxide of 16 kilograms (1600x1%, kilogram).One medium-sized coal-burning boiler about burn every day 150~ The coal of 200 tons;That is the sulfur dioxide of 2.4~3.2 tons can be produced every day.Current desulfurization technology includes coal mixture stone Ash or additive;Calcium and ebullated bed limestone dry desulfurization is directly sprayed in stove;And calcium alkaline process, ammonia-soda process, sodium alkali, magnesium alkaline process Deng wet desulphurization.Eliminating through practical proof for many years and market economy technology, the only technical equipment of minority actually enters combustion Coal industry boiler applications.Wherein with spiral board towers units for currently mainly application.Spiral board towers units is in the nineties For flue gas desulfurization and the dedusting of coal-fired industry boiler after technological transformation.The advantage of this device is connecing of flue gas and liquid Contacting surface is long-pending greatly, simple in construction, resistance are less, stable for main feature.Its shortcoming is then that existing technology desulfuration efficiency is put down All only reach 60~80%, and cost is very big.The operating cost of desulfurization now is 0.3 yuan every watt, and one medium-sized by 12,000 Megawatt the annual operating cost in coal-burning power plant be 44,300,000 yuan;And the cost of its desulfurizer is 3.6 hundred million yuan! Huge puts and runs with the crisis really making medium-sized and small enterprises face work factory.
Except sulfur dioxide, healthy impact has been caused at present and has paid close attention to widely by PM2.5.What is particulate matter 2.5(PM2.5)?They refer to be combined in small pieces of solid or the liquid substance that diameter in earth atmosphere is less than 2.5 microns.Particulate matter Compositions can cause obvious visual effect, such as flue dust, it by sulfur dioxide, nitrogen oxides, carbon monoxide, Mineral Dusts, have Machine material and elemental carbon composition, also referred to as black carbon or coal smoke.Due to the existence of sulfur, granule is moisture absorption, and SO2 meeting It is converted into sulphuric acid under high humility and low temperature.This will cause visibility reduction, yellow air, ozone and the suction sense of twinge.People The impact that class sucks particle matter with animal has been extensively studied;What PM2.5 caused health problem includes asthma, lung Cancer, cardiovascular problems, respiratory system disease, birth defect and premature death.
Granular material discharged the most strictly supervised in most industry country.Due to environmental problem, most industries is all Need to carry out the operation of certain dust collecting system, granular material discharged to control.These systems include that (eddy flow removes centrifugal deduster Dirt device), fiber filter cleaner unit (sack cleaner), wet scrubber and electrostatic precipitator.But, cheap cleaner Efficiency is the lowest, and typically less than 80%;Good equipment such as electrostatic precipitation, right efficiency may be up to 99%, but also has it fatal Shortcoming: (1) equipment is huge, consumption steel is many, needs high-voltage transforming and rectifying installation, therefore investment is high.(2) efficiency of dust collection is by dust specific resistance Restriction, the general contrast resistance dust less than 104~105 ohm every centimeter or more than 1010~1011 ohm every centimeter, if Not taking certain measure, efficiency of dust collection will be affected. and (3) do not possess off-line maintenance function, and once equipment breaks down, or Run in spite of illness, or can only shutdown maintenance.Sum it up, it is all very that any effective percentage is built with maintenance cost except the equipment of PM High.
China also has been presented for the restriction (see table) to particulate in air discharge, and each factory and enterprise is the most all pressed fixed Cleaner.But huge maintenance expense makes medium-sized and small enterprises unable to make ends meet really.Therefore development one is inexpensive and effective Dust arrester also should be the task of top priority.
PM10 PM2.5
Every year 70 micrograms/cubic meter 35 micrograms/cubic meter
Daily (24 hours) 150 micrograms/cubic meter 75 micrograms/cubic meter
(3) summary of the invention:
It is an object of the invention to provide a kind of method and device utilizing light to help Fenton's reaction purifying smoke, utilize light to help Fenton's reaction (Fenton Reaction) and the hydroxyl radical free radical that produces includes two to the pollutant getting rid of in fire coal boiler fume Sulfur oxide and microparticle.Hydroxyl radical free radical can be easy Oxidative demage organic pollution, be referred to as high-level oxidation technology process Process (Advanced Oxidation Processes, AOPs).The design of AOPs is a kind of method of chemistry, a kind of more effective Technology.Utilizing light to help Fenton's reaction that granule dust is converted into carbon dioxide, sulfur dioxide becomes sulphuric acid, therefore, and this The interests of device filtration system retrieval of sulfuric acid exceed the operating cost of equipment itself, and user can obtain more profit.Additionally, This technology is very flexible, and it can be included into the existing system of coal-burning boiler for improving its effectiveness, or replaces completely Old system originally.This filtration system is the most applicable at any coal-burning boiler industrial market, including cement plant, steel plant, municipal administration Fu Feiwuranshaochang, clinical waste combustion plant, chlorine maker, paper pulp and paper production factory etc..
Technical scheme: a kind of method utilizing light to help Fenton's reaction purifying smoke, it is characterised in that include with Lower step:
(1) add in reaction vessel containing Fenton reagent and use Alpha-hydroxy acid for adjusting pH value to less than or equal to 3 molten Liquid, described Fenton reagent comprises metal system and the hydrogen peroxide that light can be occurred to help Fenton's reaction;
Described solution allocation hydrogen peroxide is 3%~5% with the mass percent of water;
Hydrogen peroxide and metal system mol ratio are more than or equal to 10;
(2) according to the optical absorption peak of metal system, illumination system is set;
(3) flue gas is passed through reaction vessel, makes the pollutant in flue gas be fully contacted with Fenton reagent and react;
(4) after reacting, solution is derived, and periodic monitor derives the concentration of Fenton reagent in solution, according to the feelings of monitoring Condition, adds the new solution containing Fenton reagent and makes solution composition in reaction vessel keep stable;
(5) purified gas discharges reaction vessel.
Metal system in step described above (1) is Fe (II)/F (III) system or Cu (I)/Cu (II) system;Work as gold When genus system is Fe (II)/F (III) system, then illumination be wavelength be the ultraviolet light of 200nm~400nm;When metal system is Cu (I) during/Cu (II) system, illumination be wavelength be the visible ray of 600nm~800nm.
Fe described above (II)/F (III) system is less than the FeSO of 20 nanometers by diameter4And Fe3O4Granule is constituted.
Cu described above (I)/Cu (II) system is less than the Cu of 20 nanometers by diameter2O and CuSO4Granule is constituted.
Hydrogen peroxide in step described above (1) is that diameter is less than the Magnesium dioxide of 50 nanometers, sodium peroxide or peroxide Change generation after calcium reacts in described solution.
'alpha '-hydroxy acids described above is glycolic, acetone acid or lactic acid.
In step described above (3), the pollutant in flue gas are sulfur dioxide, carbon granule, carbon monoxide or Hydrocarbon In at least one, sulfur dioxide be oxidized to sulfur trioxide and be dissolved in solution formed sulphuric acid, carbon granule is oxidized to titanium dioxide Carbon, carbon monoxide is oxidized to carbon dioxide, and Hydrocarbon is broken down into carbon dioxide and water.
The mode being fully contacted in step described above (3) is that gas is passed directly into liquid or adds in reaction vessel At least one in spray equipment.
When pollutant in step described above (3) include sulfur dioxide, add step (3 ') after step (3) and utilize city Described metal system material is reclaimed in the Amberlite IRC748 ion exchange resin coating absorption selling DOW chemical company, By the solution purification containing sulphuric acid.
In step described above (3), flue gas have passed through pretreatment before being passed through reaction vessel, and preprocessing process eliminates The diameter solid particle more than 10 microns in flue gas.
In step described above (6), the consumption of the hydrogen peroxide in Fenton reagent passes through periodic collection sample by closely Monitoring, and use iodine/potassium permanganate (I/KMnO4) titrimetry observe peroxide consumption rate.
A kind of device realizing the above-mentioned method utilizing light to help Fenton's reaction purifying smoke, including luminous energy storehouse, described luminous energy Storehouse includes drawing water in luminous energy warehouse, luminous energy storehouse air inlet, gas outlet, luminous energy storehouse, luminous energy storehouse inlet, gas-liquid mixed passage, luminous energy storehouse Pump, luminous energy storehouse liquid outlet, luminous energy storehouse spray equipment and light irradiation apparatus, described luminous energy storehouse air inlet and gas outlet, luminous energy storehouse are arranged on The top of luminous energy warehouse, described luminous energy storehouse inlet is arranged on the middle part of luminous energy warehouse, and described luminous energy storehouse liquid outlet is arranged on light The bottom of energy warehouse, described gas-liquid mixed passage, luminous energy storehouse spray equipment and light irradiation apparatus are positioned at luminous energy warehouse, gas-liquid mixed The input of passage connects luminous energy storehouse air inlet, and the outfan of gas-liquid mixed passage 2-4 is positioned at luminous energy warehouse bottom close at the bottom of storehouse Position, described luminous energy storehouse suction pump connects the outfan bottom luminous energy warehouse and the input of luminous energy storehouse spray equipment by pipeline End.
Arranging luminous energy storehouse liquid level meter on the sidewall of luminous energy warehouse described above, luminous energy warehouse top arranges the maintenance of luminous energy storehouse Lid.
Light irradiation apparatus described above is quartz ampoule uviol lamp or visible lamp.
The device utilizing light to help Fenton's reaction purifying smoke described above also includes cleaning position, and described cleaning position includes purifying Warehouse, purification plate, fluid flow control bolt and cleaning position liquid outlet, and described purification warehouse is placed luminous energy warehouse, described luminous energy Storehouse liquid outlet stretches in purification warehouse, and described fluid flow controls bolt and is arranged on the liquid outlet of luminous energy storehouse, and described luminous energy storehouse goes out liquid Mouth is positioned at above purification plate, and described purification plate is fixed in cleaning position body, and described cleaning position liquid outlet is arranged at the bottom of purification warehouse Portion.
Purification plate described above is corrosion resistant plate or ceramic wafer, and purification plate is coated with commercially available DOW chemical company Amberlite IRC748 ion exchange resin coating.
The operation principle of the present invention:
In luminous energy storehouse, help Fenton's reaction and catalysis/oxidation reaction that dust is changed into carbon dioxide by making to use up, Sulphur Dioxide is become sulphuric acid.Fenton's reaction is a simple photosensitized oxidation/reduction catalysts reaction, the master of Fenton's reaction Wanting feature is that it produces active oxygen (ROS), particularly hydroxyl radical free radical.Hydroxyl radical free radical is maximally effective active oxygen, and it is permissible Aoxidize any organic (including biomolecule) and inorganic matrix at its periphery.Its original chemical reaction is Fe (II) and H2O2 Reaction generates Fe (III) and OH (see Fig. 3), and reduction Fe (III) to Fe (II) needs heat or the energy of light.There is no substrate and the end Thing and in the case of having luminous energy, has three dominant mechanisms (see Fig. 4-6).Light helps the efficiency of Fenton's reaction to depend primarily on H2O2 Concentration, Fe (II)/H2O2Ratio, pH value, the intensity of response time and UV light.The chemical characteristic of pollutant, physical characteristic, Initial concentration and temperature, also have important impact to final efficiency.
Dust (main component of haze) in flue gas burns incomplete coal the most exactly, and the organic substance contained in coal exists Producing imflammable gas after decomposes, also referred to as " volatile matter " (VOC), it is by various Hydrocarbon, hydrogen, an oxygen Change the mixed gas of the compound compositions such as carbon.When coal combustion condition is the most up to standard or volatile matter high coal (colm) burning time easy Produce the carbon granules that uncombusted is minimum, be commonly called as " black smoke ";And produce the carbon such as more VOC such as carbon monoxide, multiring aromatic hydrocarbon, aldehydes Pollutant are closed in hydrogenation.
The chemical principle of AOPs system be hydroxyl radical free radical have high chemical reactivity and its very High oxidizing potential.The generation of hydroxyl radical free radical can utilize the method for oxidation of biography, such as hydrogen peroxide or ozone and ultraviolet spoke Penetrate/or the combination of catalyst.High intensity UV lamp and Fenton's reaction can react with any organic and inorganic molecule and decompose. Any organic carbon-containing molecule being present in flue gas can be oxidized to CO when it is through bin2, other heavy metals and inorganic ore deposit Thing then can be deposited in the fiber removal of mercury filter in our discharge duct.Hydroxyl radical free radical and the dominant response of organic substance It is exactly can be by organic substance decomposition progressively.Hydroxyl radical free radical and Hydrocarbon first reaction in flue gas in luminous energy storehouse Being to remove a hydrogen atom in its molecular structure (R), then form water and alkyl diradical (R) (see Fig. 7), second anti- Should be that alkyl diradical (R) reacts rapidly formation peroxy radical (see Fig. 8), more again through many with molecular oxygen Step, ultimately generates carbon dioxide and water.Hydroxyl radical free radical can be with Quick Oxidation SO2So that industrial utilize at Fenton's reaction The reason waste gas containing sulfur dioxide is possibly realized, SO2With hydroxyl radical free radical effect, form SO3, form sulphuric acid the most in the solution (see Figure 10).
Additionally, the generation of hydroxyl radical free radical is also by other light reaction, such as ozone/ultraviolet or peroxidating dioxy Changing titanium/hydrogen/solar radiation also to be able to realize, it is high (from 63 to 10 that the feature of Fenton's reaction is exactly its reaction rate constant5), And other luminous energy reaction such as reaction of ozone/ultraviolet, speed constant is only 10-6Left and right.Flue gas in trachea with 6 meters per second Speed before, without high reaction efficiency, any chemical reaction all methods are carried out.
The technical program is also added into 'alpha '-hydroxy acids to improve the volume of production of OH.Glycolic, acetone acid and lactic acid all may be used To add in luminous energy storehouse, help speed up the speed of Fenton's reaction and the formation of hydroxyl radical free radical.'alpha '-hydroxy acids is not own It is not involved in Fenton's reaction, but it can stablize the formation of OH to increase the yield of OH.It can also keep the pH value in storehouse Less than 3 to guarantee that luminous energy storehouse has the light reaction environment of optimum.
Due to the corrosivity of the sulphuric acid (sulphuric acid of 20%~70% concentration its corrosivity ratio 98% different according to intensity The sulphuric acid of concentrations above is taller), so storehouse has been coated with the Teflon of 2~3 millimetersWith anticorrosion.
The superiority of the present invention: 1, the advantage of nano material is that its surface area is big, and between molecule, electronic shell transfers mutually Very fast, can make to accelerate as chemical reaction velocity index;Especially in optical field, the work of the least luminous energy of diameter of nanometer Property is the biggest with momentum.So wanting that the flue gas making flow velocity the fastest produces any chemical reaction, the advantage of nanotechnology is could not Fixed.The redox reaction of self is spontaneous, has the characteristic of catalyst, so without often attaching, consumption is few, very Economy.2, this invention desulfurization benefit can reach 99.99%, and be manufactured into and run all on 50% left side of current desulfurization technology The right side, and in the case of there is no any extra charge, solve the removal problem of PM2.5.Equipment occupation of land is little, transformation is simple.This Invention is set up and is helped in the principle of Fenton's reaction at light, and is eliminating SO2With achieve immense success on flue dust.Of the present invention set Standby it is principle based on AOPs-Fenton's reaction and successful industrialized unit.The method of the invention be one more economical, higher The mode controlling air pollution of effect, it is not necessary to any extra manufacture and operating cost.It is existing that it can be included into coal-burning boiler Some dust pelletizing systems are for improving its effectiveness, it is also possible to replace original old system completely.The present invention is the most applicable at other Industrial market, including cement plant, steel plant, trash burning factory of municipal government, clinical waste combustion plant, chlorine maker, paper pulp With paper production factory etc..On the premise of following strictly rule of operation, technique can be protected continuity and use by 15~20 years without entering Row is engineered, Tong Bu can carry out maintaining with the coal-burning boiler run.
This device clean-up effect detection test report is as follows:
1, the present invention is for purifying the test report of vehicle exhaust:
Examination criteria (method) and use instrument
Testing result
Unit: milligram/cubic meter
2, the present invention is for the test report (test site is certain boiler room) of purification boiler waste gas:
Examination criteria (method) and use instrument:
Testing result unit: milligram/cubic meter
Remarks: standard value is according to " thermoelectricity field atmosphere pollutants emission standards " (GB13223-2011)
3, the present invention is for the test report (test site is certain power plant and certain steel mill) of purifying industrial waste gases
Examination criteria (method) and use instrument
Testing result
Unit: milligram/cubic meter
4, present invention test report of sulfur dioxide in purifying smoke
(4) accompanying drawing explanation:
Fig. 1 is the structural representation in the luminous energy storehouse in a kind of device utilizing light to help Fenton's reaction purifying smoke involved by the present invention Figure.
Fig. 2 is the luminous energy storehouse in a kind of device utilizing light to help Fenton's reaction purifying smoke involved by the present invention and cleaning position Combinative structure schematic diagram.
Fig. 3 is that in a kind of method utilizing light to help Fenton's reaction purifying smoke involved by the present invention, light helps Fe in Fenton's reaction (II) reaction equation of Fe (III) it is oxidized to.
Fig. 4 is that in a kind of method utilizing light to help Fenton's reaction purifying smoke involved by the present invention, light helps in Fenton's reaction first Plant Fe (III) and be reduced to the reaction equation of Fe (II).
Fig. 5 is that in a kind of method utilizing light to help Fenton's reaction purifying smoke involved by the present invention, light helps in Fenton's reaction second Plant Fe (III) and be reduced to the reaction equation of Fe (II).
Fig. 6 is that in a kind of method utilizing light to help Fenton's reaction purifying smoke involved by the present invention, light helps in Fenton's reaction the 3rd Plant Fe (III) and be reduced to the reaction equation of Fe (II).
Fig. 7 is that in a kind of method utilizing light to help Fenton's reaction purifying smoke involved by the present invention, light helps hydroxyl in Fenton's reaction Free radical forms water and the chemical equation of alkyl diradical with hydrocarbon reaction
Fig. 8 is that in a kind of method utilizing light to help Fenton's reaction purifying smoke involved by the present invention, light helps alkyl in Fenton's reaction Free radical and molecular oxygen react the chemical equation forming peroxy radical.
Fig. 9 is C in a kind of method utilizing light to help Fenton's reaction purifying smoke involved by the present invention2H6It is broken down into titanium dioxide Carbon and the chemical equation of water.
Figure 10 is the oxidation of sulfur dioxide in a kind of method utilizing light to help Fenton's reaction purifying smoke involved by the present invention Learn reaction equation.
Wherein, 1-1 is for purifying warehouse, and 1-2 is purification plate, and 1-3 is that fluid flow controls bolt, and 1-4 is cleaning position liquid outlet, Gas outlet, 2-1 luminous energy storehouse, 2-2 is luminous energy storehouse air inlet, and 2-3 is luminous energy storehouse inlet, and 2-4 is gas-liquid mixed passage, and 2-5 is light Energy storehouse suction pump, 2-6 is luminous energy storehouse liquid outlet, and 2-7 is luminous energy storehouse liquid level meter, and 2-8 is luminous energy storehouse spray equipment, and 2-9 is luminous energy Storehouse access cover, 2-10 is light irradiation apparatus, and 2-11 is luminous energy warehouse.
(5) detailed description of the invention:
Embodiment 1: a kind of method utilizing light to help Fenton's reaction purifying smoke, it is characterised in that comprise the following steps:
(1) add in reaction vessel containing Fenton reagent and use Alpha-hydroxy acid for adjusting pH value to less than or equal to 3 molten Liquid, described Fenton reagent comprises metal system and the hydrogen peroxide that light can be occurred to help Fenton's reaction;
Described solution allocation hydrogen peroxide is 5% with the mass percent of water;
Hydrogen peroxide and metal system mol ratio are about 30:1;
(2) according to the optical absorption peak of metal system, illumination system is set;
(3) flue gas is passed through reaction vessel, makes the pollutant in flue gas be fully contacted with Fenton reagent and react;
(4) after reacting, solution is derived, and periodic monitor derives the concentration of Fenton reagent in solution, according to the feelings of monitoring Condition, adds the new solution containing Fenton reagent and makes solution composition in reaction vessel keep stable;
(5) purified gas discharges reaction vessel.
Metal system in step described above (1) is Fe (II)/F (III) system, then illumination be wavelength be 200nm~ The ultraviolet light of 400nm.
Fe described above (II)/F (III) system is less than the FeSO of 20 nanometers by diameter4And Fe3O4Granule is constituted.
'alpha '-hydroxy acids described above is lactic acid.
In step described above (3), the pollutant in flue gas are sulfur dioxide, carbon granule, carbon monoxide and nytron Thing, sulfur dioxide is oxidized to sulfur trioxide and is dissolved in solution formation sulphuric acid, and carbon granule is oxidized to carbon dioxide, carbon monoxide Being oxidized to carbon dioxide, Hydrocarbon is broken down into carbon dioxide and water.
The mode being fully contacted in step described above (3) is that gas is passed directly into liquid and adds in reaction vessel Spray equipment.
When pollutant in step described above (3) include sulfur dioxide, add step (3 ') after step (3) and utilize city Described metal system material is reclaimed in the Amberlite IRC748 ion exchange resin coating absorption selling DOW chemical company, By the solution purification containing sulphuric acid.
In step described above (3), flue gas have passed through pretreatment before being passed through reaction vessel, and preprocessing process eliminates The diameter solid particle more than 10 microns in flue gas.
In step described above (6), the consumption of the hydrogen peroxide in Fenton reagent collected sample quilt by every 10 hours Close monitoring, and use iodine/potassium permanganate (I/KMnO4) titrimetry to observe the consumption rate of peroxide.
A kind of device realizing the above-mentioned method utilizing light to help Fenton's reaction purifying smoke, including luminous energy storehouse, described luminous energy Storehouse includes that luminous energy warehouse 2-11, luminous energy storehouse air inlet 2-2, luminous energy storehouse gas outlet 2-1, luminous energy storehouse inlet 2-3, gas-liquid mixed are logical Road 2-4, luminous energy storehouse suction pump 2-5, luminous energy storehouse liquid outlet 2-6, luminous energy storehouse spray equipment 2-8 and light irradiation apparatus 2-10, described light Energy storehouse air inlet 2-2 and luminous energy storehouse gas outlet 2-1 is arranged on the top of luminous energy warehouse 2-11, and described luminous energy storehouse inlet 2-3 sets Putting the middle part at luminous energy warehouse 2-11, described luminous energy storehouse liquid outlet 2-6 is arranged on the bottom of luminous energy warehouse 2-11, and described gas-liquid is mixed Close passage 2-4, luminous energy storehouse spray equipment 2-8 and light irradiation apparatus 2-10 and be positioned at luminous energy warehouse 2-11, gas-liquid mixed passage 2-4's Input connects luminous energy storehouse air inlet 2-2, and the outfan of gas-liquid mixed passage 2-4 is positioned at luminous energy warehouse 2-11 bottom close at the bottom of storehouse Position, described luminous energy storehouse suction pump 2-5 connects the outfan bottom luminous energy warehouse 2-11 and luminous energy storehouse spray dress by pipeline Put the input of 2-8;
Arrange luminous energy storehouse liquid level meter 2-7, luminous energy warehouse 2-11 top on the sidewall of luminous energy warehouse 2-11 described above to arrange Luminous energy storehouse access cover 2-9.
Light irradiation apparatus 2-10 described above is quartz ampoule uviol lamp.
The device utilizing light to help Fenton's reaction purifying smoke described above also includes cleaning position, and described cleaning position includes purifying Warehouse 1-1, purification plate 1-2, fluid flow control bolt 1-3 and cleaning position liquid outlet 1-4, and described purification warehouse 1-1 places light Can warehouse 2-11, described luminous energy storehouse liquid outlet 2-6 stretch in purification warehouse 1-1, described fluid flow controls bolt 1-3 and is arranged on light On energy storehouse liquid outlet 2-6, described luminous energy storehouse liquid outlet 2-6 is positioned at above purification plate 1-2, and described purification plate 1-2 is fixed on purification In warehouse 1-1, described cleaning position liquid outlet 1-4 is arranged on bottom purification warehouse 1-1.
Purification plate 1-2 described above is corrosion resistant plate, painting commercially available DOW chemical company on purification plate 1-2 Amberlite IRC748 ion exchange resin coating.
The device method of work of purifying smoke in the present embodiment:
As a example by 15 tons of coal-burning boilers for about 30 tons of coals of burning every day:
The method of work in luminous energy storehouse:
(1) diameter of luminous energy warehouse 2-11 and height are respectively 2.7 meters and 2.25 meters;
(2) inject the water of 5725 liters to luminous energy warehouse 2-11, add the 35%H of 817 liters2O2With the FeSO of 64 kilograms4 (FeSO4:H2O2=1:5w/w);
(3) arrange 4 1000W widebands in luminous energy warehouse 2-11, wavelength is 200nm to 400nm, optical absorption peak value is equal to UV light (the FeSO of 365nm4At 365nm, there is the highest absorptance);
(4) luminous energy storehouse spray equipment 2-8 is opened;
(5) flue gas eliminating PM10 is passed through luminous energy warehouse 2-11 from luminous energy storehouse air inlet 2-2, at gas-liquid mixed passage With liquid haptoreaction at 2-4, after gas emersion liquid level, the drop contact with luminous energy storehouse spray equipment 2-8 ejection reacts again, makes It is carbon dioxide, wherein, flue gas that Hydrocarbon in flue gas is decomposed into carbon dioxide and water, carbon granule and Oxidation of Carbon Monoxide In common Hydrocarbon include C2H6(see Fig. 9) can be decomposed in luminous energy storehouse;
(6) after reacting, solution is derived from luminous energy storehouse liquid outlet 2-6, hydrogen peroxide (H2O2) consumption by every 10 little Time sample collection by close monitoring, and use iodine/potassium permanganate (I/KMnO4) titrimetry observe peroxide consumption Rate, according to the SO in flue gas2And CO2Content, dosing pump will supplement hydrogen peroxide to luminous energy warehouse 2-11 from receiver;
(7) purified gas is discharged luminous energy warehouse 2-11 from luminous energy storehouse gas outlet 2-1.
From the point of view of industrial test data according to described in the present embodiment 15 tons of coal-burning boilers, the method for the invention has reached The PM2.5 clearance of 95.4% (from 105 micrograms/cubic meter to 5 micrograms/cubic meter), and desulfuration efficiency can reach 99.99%, even if as the SO in flue gas2During content up to 2000 milligram/cubic metre, can also be by flue gas by this method SO2Substantially completely remove.The present invention can also use calorifics Fenton's reaction to reach required technical specification.
The method of work of cleaning position:
(1) the mixing liquid containing sulphuric acid in luminous energy warehouse 2-11 flows into from luminous energy storehouse liquid outlet 2-6 and purifies warehouse 1-1 In, the control of 1-3 is fastened in flow velocity liquid body flow-control;
(2) mixing liquid flows through purification plate 1-2, and the Amberlite IRC748 ion exchange resin on purification plate 1-2 is coated with Layer catches the impurity in mixing liquid and Fe (II)/F (III) system;
(3) sulfuric acid mixed solution after purifying flows out from cleaning position liquid outlet 1-4.
Sulfuric acid mixed solution after the purification that step (3) obtains can purify the bright sulfur acid obtaining 98% on the spot, and purification plate is caught The metal system (Fe (II) in the present embodiment/F (III) system) grasped can also recycle.
Embodiment 2:
A kind of method utilizing light to help Fenton's reaction purifying smoke, it is characterised in that comprise the following steps:
(1) add in reaction vessel containing Fenton reagent and use Alpha-hydroxy acid for adjusting pH value to less than or equal to 3 molten Liquid, described Fenton reagent comprises metal system and the hydrogen peroxide that light can be occurred to help Fenton's reaction;
Described solution allocation hydrogen peroxide is 4% with the mass percent of water;
Hydrogen peroxide and metal system mol ratio are 10:1;
(2) according to the optical absorption peak of metal system, illumination system is set;
(3) flue gas is passed through reaction vessel, makes the pollutant in flue gas be fully contacted with Fenton reagent and react;
(4) after reacting, solution is derived, and periodic monitor derives the concentration of Fenton reagent in solution, according to the feelings of monitoring Condition, adds the new solution containing Fenton reagent and makes solution composition in reaction vessel keep stable;
(5) purified gas discharges reaction vessel.
Metal system in step described above (1) is Cu (I)/Cu (II) system, illumination be wavelength be 600nm~ The visible ray of 800nm.
Cu described above (I)/Cu (II) system is less than the Cu of 20 nanometers by diameter2O and CuSO4Granule is constituted.
Hydrogen peroxide in step described above (1) is that diameter is less than the Magnesium dioxide of 50 nanometers and reacts in described solution Rear generation.
'alpha '-hydroxy acids described above is glycolic.
In step described above (3), the pollutant in flue gas are sulfur dioxide, carbon granule, carbon monoxide and nytron Thing, sulfur dioxide is oxidized to sulfur trioxide and is dissolved in solution formation sulphuric acid, and carbon granule is oxidized to carbon dioxide, carbon monoxide Being oxidized to carbon dioxide, Hydrocarbon is broken down into carbon dioxide and water.
The mode being fully contacted in step described above (3) is that gas is passed directly into liquid and adds in reaction vessel Enter spray equipment.
When pollutant in step described above (3) include sulfur dioxide, add step (3 ') after step (3) and utilize city Described metal system material is reclaimed in the Amberlite IRC748 ion exchange resin coating absorption selling DOW chemical company, By the solution purification containing sulphuric acid.
In step described above (3), flue gas have passed through pretreatment before being passed through reaction vessel, and preprocessing process eliminates The diameter solid particle more than 10 microns in flue gas.
In step described above (6), the consumption of the hydrogen peroxide in Fenton reagent collected sample quilt by every 12 hours Close monitoring, and use iodine/potassium permanganate (I/KMnO4) titrimetry to observe the consumption rate of peroxide.
A kind of device realizing the above-mentioned method utilizing light to help Fenton's reaction purifying smoke, including luminous energy storehouse, described luminous energy Storehouse includes that luminous energy warehouse 2-11, luminous energy storehouse air inlet 2-2, luminous energy storehouse gas outlet 2-1, luminous energy storehouse inlet 2-3, gas-liquid mixed are logical Road 2-4, luminous energy storehouse suction pump 2-5, luminous energy storehouse liquid outlet 2-6, luminous energy storehouse spray equipment 2-8 and light irradiation apparatus 2-10, described light Energy storehouse air inlet 2-2 and luminous energy storehouse gas outlet 2-1 is arranged on the top of luminous energy warehouse 2-11, and described luminous energy storehouse inlet 2-3 sets Putting the middle part at luminous energy warehouse 2-11, described luminous energy storehouse liquid outlet 2-6 is arranged on the bottom of luminous energy warehouse 2-11, and described gas-liquid is mixed Close passage 2-4, luminous energy storehouse spray equipment 2-8 and light irradiation apparatus 2-10 and be positioned at luminous energy warehouse 2-11, gas-liquid mixed passage 2-4's Input connects luminous energy storehouse air inlet 2-2, and the outfan of gas-liquid mixed passage 2-4 is positioned at luminous energy warehouse 2-11 bottom close at the bottom of storehouse Position, described luminous energy storehouse suction pump 2-5 connects the outfan bottom luminous energy warehouse 2-11 and luminous energy storehouse spray dress by pipeline Put the input of 2-8;
Arrange luminous energy storehouse liquid level meter 2-7, luminous energy warehouse 2-11 top on the sidewall of luminous energy warehouse 2-11 described above to arrange Luminous energy storehouse access cover 2-9.
Light irradiation apparatus 2-10 described above is visible lamp.
The device utilizing light to help Fenton's reaction purifying smoke described above also includes cleaning position, and described cleaning position includes purifying Warehouse 1-1, purification plate 1-2, fluid flow control bolt 1-3 and cleaning position liquid outlet 1-4, and described purification warehouse 1-1 places light Can warehouse 2-11, described luminous energy storehouse liquid outlet 2-6 stretch in purification warehouse 1-1, described fluid flow controls bolt 1-3 and is arranged on light On energy storehouse liquid outlet 2-6, described luminous energy storehouse liquid outlet 2-6 is positioned at above purification plate 1-2, and described purification plate 1-2 is fixed on purification In warehouse 1-1, described cleaning position liquid outlet 1-4 is arranged on bottom purification warehouse 1-1.
Purification plate 1-2 described above is ceramic wafer, painting commercially available DOW chemical company on purification plate 1-2 Amberlite IRC748 ion exchange resin coating.
In the present embodiment, one of advantage using Cu (I)/Cu (II) system is, Cu2The optical absorption peak value of O exists 600nm, CuSO4Optical absorption peak value at 700nm, be all in the least visible region (600-800nm, near-infrared) of harm.

Claims (13)

1. one kind utilizes the method that light helps Fenton's reaction purifying smoke, it is characterised in that comprise the following steps:
(1) add in reaction vessel containing Fenton reagent and use Alpha-hydroxy acid for adjusting pH value to the solution less than or equal to 3, institute State Fenton reagent and comprise metal system and the hydrogen peroxide that light can be occurred to help Fenton's reaction;
Described solution allocation hydrogen peroxide is 3%~5% with the mass percent of water;
Hydrogen peroxide and metal system mol ratio are more than or equal to 10;
(2) according to the optical absorption peak of metal system, illumination system is set;
(3) flue gas is passed through reaction vessel, makes the pollutant in flue gas be fully contacted with Fenton reagent and react;Described cigarette Pollutant in gas are at least one in sulfur dioxide, carbon granule, carbon monoxide or Hydrocarbon, and sulfur dioxide is oxidized For sulfur trioxide and be dissolved in solution formed sulphuric acid, carbon granule is oxidized to carbon dioxide, and carbon monoxide is oxidized to carbon dioxide, Hydrocarbon is broken down into carbon dioxide and water;
(4) after reacting, solution is derived, and periodic monitor derives the concentration of Fenton reagent in solution, according to the situation of monitoring, adds Adding the new solution containing Fenton reagent makes solution composition in reaction vessel keep stable;
(5) purified gas discharges reaction vessel.
A kind of method utilizing light to help Fenton's reaction purifying smoke, it is characterised in that described step (1) metal system in is Fe (II)/Fe (III) system or Cu (I)/Cu (II) system;When metal system is Fe (II)/Fe (III) during system, then illumination be wavelength be the ultraviolet light of 200nm~400nm;When metal system is Cu (I)/Cu (II) system, Illumination be wavelength be the visible ray of 600nm~800nm, described Cu (I)/Cu (II) system by diameter less than the Cu of 20 nanometers2O and CuSO4Granule is constituted.
A kind of method utilizing light to help Fenton's reaction purifying smoke, it is characterised in that described Fe (II)/Fe (III) system is less than the FeSO of 20 nanometers by diameter4And Fe3O4Granule is constituted.
A kind of method utilizing light to help Fenton's reaction purifying smoke, it is characterised in that described step (1) hydrogen peroxide in is that diameter is less than the Magnesium dioxide of 50 nanometers, sodium peroxide or calper calcium peroxide and reacts in described solution Rear generation.
A kind of method utilizing light to help Fenton's reaction purifying smoke, it is characterised in that described α-hydroxyl Base acid is glycolic, acetone acid or lactic acid.
A kind of method utilizing light to help Fenton's reaction purifying smoke, it is characterised in that described step (3) mode being fully contacted in is that gas is passed directly into liquid or adds at least in spray equipment in reaction vessel Kind.
A kind of method utilizing light to help Fenton's reaction purifying smoke, it is characterised in that described step (3), when the pollutant in include sulfur dioxide, add step (3 ') after step (3) and utilize Amberlite IRC 748 ion The absorption of exchanger resin coating reclaims described metal system material, by the solution purification containing sulphuric acid.
A kind of method utilizing light to help Fenton's reaction purifying smoke, it is characterised in that described step (4), in, the consumption of the hydrogen peroxide in Fenton reagent by close monitoring, and uses iodine/height by periodic collection sample Potassium manganate (I/KMnO4) titrimetry observes the consumption rate of peroxide.
9. realizing a device for method described in claim 1, including luminous energy storehouse, described luminous energy storehouse includes luminous energy warehouse, luminous energy Storehouse air inlet, gas outlet, luminous energy storehouse, luminous energy storehouse inlet, gas-liquid mixed passage, luminous energy storehouse suction pump, luminous energy storehouse liquid outlet, light Energy storehouse spray equipment and light irradiation apparatus, described luminous energy storehouse air inlet and gas outlet, luminous energy storehouse are arranged on the top of luminous energy warehouse, institute Stating luminous energy storehouse inlet and be arranged on the middle part of luminous energy warehouse, described luminous energy storehouse liquid outlet is arranged on the bottom of luminous energy warehouse, described Gas-liquid mixed passage, luminous energy storehouse spray equipment and light irradiation apparatus are positioned at luminous energy warehouse, and the input of gas-liquid mixed passage connects Luminous energy storehouse air inlet, the outfan of gas-liquid mixed passage is positioned at luminous energy warehouse bottom close to the position at the bottom of storehouse, and described luminous energy storehouse is taken out Water pump connects the outfan bottom luminous energy warehouse and the input of luminous energy storehouse spray equipment by pipeline.
Device the most according to claim 9, it is characterised in that luminous energy storehouse liquid level is set on the sidewall of described luminous energy warehouse Device, luminous energy warehouse top arranges luminous energy storehouse access cover.
11. devices according to claim 9, it is characterised in that described light irradiation apparatus is quartz ampoule uviol lamp or visible ray Lamp.
12. devices according to claim 9, it is characterised in that the described device utilizing light to help Fenton's reaction purifying smoke is also Including cleaning position, described cleaning position includes purifying warehouse, purification plate, fluid flow control bolt and cleaning position liquid outlet, described only Changing and place luminous energy warehouse on warehouse, described luminous energy storehouse liquid outlet stretches in purification warehouse, and described fluid flow controls bolt and is arranged on On the liquid outlet of luminous energy storehouse, described luminous energy storehouse liquid outlet is positioned at above purification plate, and described purification plate is fixed in cleaning position body, described Cleaning position liquid outlet is arranged on bottom purification warehouse.
13. devices according to claim 12, it is characterised in that described purification plate is corrosion resistant plate or ceramic wafer, purification plate On scribble Amberlite IRC 748 ion exchange resin coating.
CN201410166086.5A 2014-04-23 2014-04-23 A kind of method and device utilizing light to help Fenton's reaction purifying smoke Expired - Fee Related CN103949153B (en)

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CN103949128B (en) * 2014-04-23 2016-08-17 林小晓 A kind of method and device purifying the flue gas containing dust
CN103949153B (en) * 2014-04-23 2017-01-04 林小晓 A kind of method and device utilizing light to help Fenton's reaction purifying smoke
CN105688641B (en) * 2016-01-22 2018-05-04 浙江工业大学 Treatment system and treatment method for bubbling type ultraviolet/Fenton oxidized organic waste gas
CN105536481B (en) * 2016-01-22 2018-06-26 浙江工业大学 Circulating spraying type ultraviolet Fenton oxidation organic waste gas treatment system and treatment method
CN107185398A (en) * 2017-03-22 2017-09-22 傅国琳 A kind of system and its method of work for administering boiler smoke
CN107486000A (en) * 2017-10-19 2017-12-19 广东佳德环保科技有限公司 A kind of dioxin in flue gas removal device and technique
CN113046148B (en) * 2021-03-11 2022-04-19 北方民族大学 Method for removing sulfur content in coal by photo-Fenton oxidation
CN114191907A (en) * 2022-01-13 2022-03-18 卓宇轩 Peculiar smell processing system

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CN102008882A (en) * 2010-11-22 2011-04-13 上海电力学院 Fenton reagent for denitration of power plant smoke and denitration method by using the same
CN102166471B (en) * 2011-02-25 2013-01-30 东南大学 Heterogeneous-Photo-Fenton-based integrated smoke gas purification system
CN103706238B (en) * 2013-12-20 2017-05-10 华中科技大学 System and method for removing SO2, NO and Hg in smoke on the basis of heterogeneous Fenton
CN103949128B (en) * 2014-04-23 2016-08-17 林小晓 A kind of method and device purifying the flue gas containing dust
CN103949153B (en) * 2014-04-23 2017-01-04 林小晓 A kind of method and device utilizing light to help Fenton's reaction purifying smoke
CN104084015B (en) * 2014-04-23 2016-01-20 林小晓 A kind of system of purifying contaminated air and method of work thereof
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