CN103949128A - Method and device for purifying dust-containing flue gas - Google Patents
Method and device for purifying dust-containing flue gas Download PDFInfo
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- CN103949128A CN103949128A CN201410166067.2A CN201410166067A CN103949128A CN 103949128 A CN103949128 A CN 103949128A CN 201410166067 A CN201410166067 A CN 201410166067A CN 103949128 A CN103949128 A CN 103949128A
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- Prior art keywords
- storehouse
- luminous energy
- pretreatment
- flue gas
- warehouse
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 239000003546 flue gas Substances 0.000 title claims abstract description 75
- 239000000428 dust Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 9
- 230000003647 oxidation Effects 0.000 claims abstract description 8
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 98
- 239000007921 spray Substances 0.000 claims description 65
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 59
- 239000007789 gas Substances 0.000 claims description 52
- 238000006243 chemical reaction Methods 0.000 claims description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 229910001868 water Inorganic materials 0.000 claims description 43
- 238000012545 processing Methods 0.000 claims description 34
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 29
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 28
- 239000007800 oxidant agent Substances 0.000 claims description 24
- 239000012028 Fenton's reagent Substances 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 16
- 239000001569 carbon dioxide Substances 0.000 claims description 14
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 14
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 12
- 229910000476 molybdenum oxide Inorganic materials 0.000 claims description 12
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 12
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 claims description 12
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 12
- 239000008187 granular material Substances 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 238000005286 illumination Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000012286 potassium permanganate Substances 0.000 claims description 10
- 229930195733 hydrocarbon Natural products 0.000 claims description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims description 9
- 239000002912 waste gas Substances 0.000 claims description 9
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 8
- 239000000347 magnesium hydroxide Substances 0.000 claims description 8
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 8
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 8
- 150000002978 peroxides Chemical class 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 230000000737 periodic effect Effects 0.000 claims description 7
- -1 wherein Chemical compound 0.000 claims description 7
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 6
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 claims description 6
- 239000011630 iodine Substances 0.000 claims description 6
- 229910052740 iodine Inorganic materials 0.000 claims description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000004448 titration Methods 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 5
- LCTONWCANYUPML-UHFFFAOYSA-N Pyruvic acid Chemical compound CC(=O)C(O)=O LCTONWCANYUPML-UHFFFAOYSA-N 0.000 claims description 4
- 229940061720 alpha hydroxy acid Drugs 0.000 claims description 4
- 150000001280 alpha hydroxy acids Chemical class 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 4
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000002401 inhibitory effect Effects 0.000 claims description 4
- SPAGIJMPHSUYSE-UHFFFAOYSA-N Magnesium peroxide Chemical compound [Mg+2].[O-][O-] SPAGIJMPHSUYSE-UHFFFAOYSA-N 0.000 claims description 3
- 239000003708 ampul Substances 0.000 claims description 3
- 239000004310 lactic acid Substances 0.000 claims description 3
- 235000014655 lactic acid Nutrition 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- AAWZNWVCESLFTD-UHFFFAOYSA-N tungsten;hydrate Chemical compound O.[W] AAWZNWVCESLFTD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004343 Calcium peroxide Substances 0.000 claims description 2
- 235000019402 calcium peroxide Nutrition 0.000 claims description 2
- 229940107700 pyruvic acid Drugs 0.000 claims description 2
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 claims description 2
- 238000006555 catalytic reaction Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 24
- 239000000126 substance Substances 0.000 description 7
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 6
- 239000003245 coal Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000000746 purification Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 208000032170 Congenital Abnormalities Diseases 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 208000006673 asthma Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007698 birth defect Effects 0.000 description 1
- 239000003738 black carbon Substances 0.000 description 1
- 230000005800 cardiovascular problem Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005367 electrostatic precipitation Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a method and a device for purifying dust-containing flue gas. The method comprises a washing process and an oxidation/catalytic reaction process; the device comprises a pretreatment bin and an optical energy bin, wherein the pretreatment bin has the capability of removing PM10, and the optical energy bin is a PM2.5 removing device. Under the condition that additional charges are not needed, the method and the device can achieve the purpose of removing the PM10 and the PM2.5; the method is a most economical and effective PM removing method nowadays.
Description
(1) technical field:
The present invention relates to a kind of purification method and device, method and the device of the flue gas that particularly a kind of purification contains dust.
(2) background technology:
PM2.5 is causing widely and is paying close attention at present healthy impact.What is particle 2.5 (PM2.5)? they refer to and are combined in small pieces solid or the liquid substance that in earth atmosphere, diameter is less than 2.5 microns.Particle composition can cause obvious visual effect, and as flue dust, it is made up of sulfur dioxide, nitrogen oxide, carbon monoxide, Mineral Dusts, organic substance and elemental carbon, is also referred to as black carbon or coal smoke.Due to the existence of sulphur, particle is moisture absorption, and SO
2can under high humility and low temperature, be converted into sulfuric acid.This will cause the suction sense of visibility reduction, yellow air, ozone and shouting pain.The impact that the mankind and animal suck particle matter is extensively studied; PM2.5 cause health problem comprise asthma, lung cancer, cardiovascular problems, respiratory disease, birth defect and dead too early.
Granular material dischargedly all be subject to strict supervision in most industry country.Due to environmental problem, most industries all needs to carry out the operation of certain dust collecting system, granular material discharged to control.These systems comprise centrifugal deduster (cyclone dust), fiber filter deduster (sack cleaner), wet scrubber and electrostatic precipitator.But cheap cleaner efficiency is very low, does not conventionally reach 80%; Good equipment such as electrostatic precipitation, although efficiency can be up to 99%, also have its fatal shortcoming: (1) equipment is huge, and consumption steel is many, needs high-voltage transforming and rectifying installation, therefore invest high.(2) efficiency of dust collection is subject to the restriction of dust specific resistance, generally contrasts resistance and is less than 104～105 ohm every centimeter or be greater than the dust of 1010～1011 ohm every centimeter, if do not take certain measure, efficiency of dust collection will be affected.(3) do not possess off-line maintenance function, once equipment breaks down, or operation in spite of illness, or can only shutdown maintenance.Generally speaking, any efficient construction of the equipment except PM is all very high with maintenance cost.
China has also proposed the restriction (seeing the following form) to particulate in air discharge, and each factory and enterprise is also all Aned the Gui cleaner of having Dinged Installed.But huge maintenance expense makes medium-sized and small enterprises unable to make ends meet really.Therefore developing that an inexpensive and effective Chu Chen Installed puts is the task of top priority.
| ? | PM10 | PM2.5 |
| Every year | 70 microgram/cubic meters | 35 microgram/cubic meters |
?
| Daily (24 hours) | 150 microgram/cubic meters | 75 microgram/cubic meters |
(3) summary of the invention:
The method and the device that the object of the present invention is to provide the flue gas that a kind of purification contains dust, a best-of-breed functionality of this system is the removal problem that has solved PM10 and PM2.5 without any extra charge in the situation that.Pretreatment storehouse has the ability of eliminating PM10, the removal device that luminous energy storehouse is PM2.5.High intensity UV lamp and Fenton's reaction can react and decompose with any organic and inorganic molecule.The present invention can get rid of the dust producing in coal combustion exhaust, is a kind of method of physical engagement chemistry, and dust is through washing, and the reaction of oxidation/catalysis becomes carbon dioxide and water afterwards with decomposition.
Technical scheme of the present invention: the method for the flue gas that a kind of processing contains dust, is characterized in that comprising the following steps:
(1) in pretreating containers, add water;
(2) in reaction vessel, add and contain Fenton reagent and use Alpha-hydroxy acid for adjusting pH value to the solution that is less than or equal to 3, described Fenton reagent comprises metal system and the hydrogen peroxide that light can occur help Fenton's reaction;
The mass percent of described solution allocation hydrogen peroxide and water is 3%～5%;
Hydrogen peroxide and metal system mol ratio are more than or equal to 10:1;
(3), according to the optical absorption peak of metal system, illumination system is set in reaction vessel;
(4) waste gas is passed into pretreating containers, fully contact with liquid, the solid particle that makes diameter be greater than 10 microns is stayed in liquid;
(5) by contain diameter be greater than 10 microns solid particle liquid derive pretreating containers;
(6) flue gas after purifying is discharged to pretreating containers;
(7) flue gas of step (6) being discharged passes into reaction vessel, and with the abundant haptoreaction of Fenton reagent, making the hydrocarbons decompose in flue gas is carbon dioxide and water, and carbon granule and Oxidation of Carbon Monoxide are carbon dioxide;
(8) will react after solution derive, and periodic monitor derives the concentration of Fenton reagent in solution, according to the situation of monitoring, adds the new solution that contains Fenton reagent and makes solution composition keep stable;
(9) purified gas is discharged to reaction vessel.
After step described above (1), add step (1 ') for using nitric acid to adjust below pH value to 3, then add oxidising agent, make carbon granule be oxidized to carbon monoxide, described oxidising agent is hydrogen peroxide, the mixture of molybdenum oxide and tungsten oxide, the mixture of magnesia and magnesium hydroxide or di-iron trioxide, wherein, molybdenum oxide, tungsten oxide, magnesia, the diameter of magnesium hydroxide and di-iron trioxide solid particle is less than 20nm, the volume ratio of hydrogen peroxide and water is 1:18～22, the mol ratio of molybdenum oxide and tungsten oxide is 1:1, the mol ratio of magnesia and magnesium hydroxide is 1:1, the amount ratio of molybdenum oxide and water is more than or equal to 10mol/L, the amount ratio of tungsten oxide and water is more than or equal to 10mol/L, the amount ratio of magnesia and water is more than or equal to 10mol/L, the amount ratio of magnesium hydroxide and water is more than or equal to 10mol/L, the amount ratio of di-iron trioxide and water is more than or equal to 20mol/L.
The concentration of the oxidising agent in step described above (1 ') needs periodic monitor and supplements as required oxidising agent to make oxidising agent concentration stabilize in solution.
Metal system in step described above (2) is Fe (II)/F (III) system or Cu (I)/Cu (II) system; In the time that metal system is Fe (II)/F (III) system, illumination is that wavelength is the ultraviolet light of 200nm～400nm; In the time that metal system is Cu (I)/Cu (II) system, illumination is that wavelength is the visible ray of 600nm～800nm.
Fe described above (II)/F (III) system is less than the FeSO of 20 nanometers by diameter
4and Fe
3o
4particle forms.
Cu described above (I)/Cu (II) system is less than the Cu of 20 nanometers by diameter
2o and CuSO
4particle forms.
In step described above (4) fully the mode of contact for liquid is sprayed to gas by spray equipment, the area and the time that contact with liquid to increase waste gas.
Flue gas in step described above (4) enters from pretreating containers bottom, and direction level is also 40～50 degree angles with chamber wall, to increase the time contacting with liquid.
In step described above (5), derive the liquid of pretreating containers and removing after the particle that is greater than 10 microns, got back in pretreating containers by pipeline is defeated by suction pump.
Hydrogen peroxide described above is that peromag, sodium peroxide or the calper calcium peroxide that diameter is less than 50 nanometers reacts rear generation in described solution.
The consumption of hydrogen peroxide described above is by regularly collecting sample by close monitoring, and the consumption rate of use iodine/potassium permanganate (I/KMnO4) titration observation peroxide.
'alpha '-hydroxy acids described above is glycolic, pyruvic acid or lactic acid.
In step described above (7) fully the mode of contact be gas is directly passed into liquid or by liquid by spray equipment at least one in gas spray.
Realize a device for method described above, comprise pretreatment storehouse and luminous energy storehouse, described pretreatment storehouse comprises pretreatment warehouse, pretreatment storehouse spray equipment, pretreatment storehouse air inlet, pretreatment storehouse suction pump, reservoir, pretreatment storehouse liquid outlet, pretreatment storehouse inlet and gas outlet, pretreatment storehouse, the bottom of described pretreatment warehouse is reservoir, pretreatment storehouse liquid outlet is arranged on reservoir place, described pretreatment storehouse air inlet, pretreatment storehouse inlet and gas outlet, pretreatment storehouse are arranged on the pretreatment warehouse of reservoir top, gas outlet, pretreatment storehouse is above the air inlet of pretreatment storehouse, described pretreatment storehouse spray equipment is arranged in pretreatment warehouse, described pretreatment storehouse suction pump connects the output of reservoir and the input of pretreatment storehouse spray equipment by pipeline, described luminous energy storehouse comprises 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, 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, 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, the input of gas-liquid mixed passage connects luminous energy storehouse air inlet, the output of gas-liquid mixed passage is positioned at the position at the bottom of luminous energy warehouse bottom approaches storehouse, described luminous energy storehouse suction pump connects the output of luminous energy warehouse bottom and the input of luminous energy storehouse spray equipment by pipeline, gas outlet, described pretreatment storehouse connects luminous energy storehouse air inlet.
Pretreatment warehouse described above top arranges pretreatment storehouse access cover, and pretreatment storehouse access door is set on the sidewall of pretreatment warehouse, and reservoir top arranges infundibulate collecting board, and pretreatment storehouse liquid level meter and thief hatch are set on the sidewall of reservoir.
Pretreatment described above storehouse spray equipment is the pressurization spray equipment that is arranged on pretreatment warehouse inner top, or for being arranged on the pressurization spray equipment of pretreatment warehouse inner top and being arranged on the atomizing spray equipment on pretreatment warehouse inwall.
The spray droplet of pressurization spray equipment described above is uniform line; The diameter that every dropping liquid drips is 2～3 millimeters, 6～10 millimeters, interval between every.
Pretreatment warehouse described above is made up of stainless steel metal plate.
Pretreatment described above storehouse suction pump is acidproof water pump.
Luminous energy warehouse described above is made up of stainless steel metal plate, on luminous energy warehouse inwall, scribbles corrosion-inhibiting coating.
Luminous energy storehouse liquid level meter is set on the sidewall of luminous energy warehouse described above, and luminous energy warehouse top arranges luminous energy storehouse access cover.
Light irradiation apparatus described above is quartz ampoule uviol lamp or visible lamp.
Operation principle of the present invention:
1, the operation principle in pretreatment storehouse:
Liquid in pretreatment storehouse carrys out controlled circulation by an acidproof water pump, and liquid contains water and oxidising agent, and water can be removed the PM10 in flue gas.Oxidising agent adopts hydrogen peroxide (H
2o
2) time, H
2o
2under acid reaction environment, be equivalent to strong oxidizer.Flue gas exceedes 6 meter per seconds in the speed of ventilation shaft, and with this kind of speed, the entrained any material of flue gas does not have the too many time to remove to produce chemical reaction, unless this reaction be heat release with spontaneous.In addition, with respect to other strong oxidizers, the relatively cheap and safety of hydrogen peroxide, thus in the time that this technology is applied to industry on a large scale, can reduce greatly cost and improve safety precaution coefficient.
If peroxide is in gaseous state, although gas reaction has higher reaction power and conventionally occurs very soon so, also can produce immediately reaching its back reaction after balance.The oxide producing due to peroxide all belongs to transition state, and they are not highly stable.If do not have effective way that transition state is changed into other end product, this intermediate can convert back into reactant at once and therefore reduce effect of oxidant.Therefore, by luminous energy storehouse immediately after pretreatment storehouse, success and effectively solved this problem.
Spray system has been placed to guarantee having fully for a long time and contact between flue gas and liquid in the top in pretreatment storehouse and side.Flue gas will enter pretreatment storehouse with 40-50 degree angle, cause flue gas in the time moving up, to produce helical effect.Spray system and helical effect all can promote flue gas and rest on the time of inside, pretreatment storehouse.The uniform line of drop of top shower, guarantees in the situation that gas extraction system not being produced to any back-pressure the Maximum Contact between flue gas and liquid.Any drop that is less than 2 millimeters can be easy to be deflated strength and bring luminous energy storehouse into.Cross pollution meeting reduces the efficiency of equipment, therefore needs to avoid.Side shower system is atomizing to guarantee fully mixing of liquid and gas.
2, the operation principle in luminous energy storehouse:
In luminous energy storehouse, help Fenton's reaction and catalysis/oxidation reaction that dust is changed into carbon dioxide by making to use up.Fenton's reaction is the reaction of a simple photosensitized oxidation/reduction catalysts, and the main feature of Fenton's reaction is that it produces active oxygen (ROS), particularly hydroxyl radical free radical.Hydroxyl radical free radical is the most effective active oxygen, and it can be oxidized any organic (comprising biomolecule) and inorganic matrix at its periphery.Its original chemical reaction is Fe (II) and H
2o
2reaction generates Fe (III) and OH (seeing Fig. 4), and reduction Fe (III) needs the energy of heat or light to Fe (II).In the situation that there is no matrix and substrate and having luminous energy, there are three dominant mechanisms (seeing Fig. 5-7).Light helps the efficiency of Fenton's reaction to depend primarily on H
2o
2concentration, Fe (II)/H
2o
2ratio, pH value, reaction time and UV light intensity.Chemical characteristic, physical characteristic, initial concentration and the temperature of pollutant, also have important impact to final efficiency.
The main component of the dust (Mist haze in flue gas) be exactly the incomplete coal that burns in fact, the organic substance containing in coal produces imflammable gas after decomposes, also be called as " volatile matter " (VOC), the mist that it is made up of compounds such as various hydrocarbons, hydrogen, carbon monoxide.In the time of coal combustion Tiao Jian Bu Da Biao Time or the burning of the high coal (colm) of volatile matter, easily produce the little carbon granules of Wei Ran Jin Very, be commonly called as " black smoke "; And produce more VOC as nytron pollutants such as carbon monoxide, multiring aromatic hydrocarbon, aldehydes.
Any organic carbonaceous molecule being present in flue gas can be oxidized to CO in the time that it passes luminous energy storehouse
2, heavy metal and inorganic mineral can be deposited in the fiber removal of mercury filter in our discharge duct.In luminous energy storehouse hydroxyl radical free radical and hydrocarbon in flue gas first to react be a hydrogen atom of removing in its molecular structure (R), then form water and alkyl diradical (R) (seeing Fig. 8), second reaction is that alkyl diradical (R) reacts rapidly and forms peroxy radical (seeing Fig. 9) with molecular oxygen again, pass through again after this many steps, finally generate carbon dioxide and water.
Superiority of the present invention: 1, the advantage of nano material is that its surface area is large, between molecule the mutual transmission of electronic shell very fast, can make to accelerate as chemical reaction velocity index; Especially in optical field, activity and the momentum of the less luminous energy of diameter of nanometer are larger.So want to make flow velocity fast flue gas like this to produce any chemical reaction, the advantage of nanometer technology is not deniable.The redox reaction of self is spontaneous, has the characteristic of catalyst, so without often attaching, consumption is few, and economy very.2, the present invention is based upon in the principle that light helps Fenton's reaction, and has obtained immense success eliminating on flue dust.The present invention is most economical, the method for effectively removing particle now, and this is that more economical, a more efficient mode is controlled air pollution, without any extra manufacture and operating cost.It can be included into the existing dust pelletizing system of coal-burning boiler and be used for improving its validity, also can replace original old system completely.This filtration system is the applicable industrial market at other also, comprises cement plant, steel plant, trash burning factory of municipal government, clinical waste combustion plant, chlorine manufactory, paper pulp and paper production factory etc.
It is as follows that this device dust removing effects detects test report:
1, the present invention is used for the test report of purifying automobile tail gas:
2, the present invention is used for the test report (test site is certain boiler room) of purification boiler waste gas:
Remarks: standard value according to " thermoelectricity field atmosphere pollutants emission standards " (GB13223-2011)
(4) brief description of the drawings:
Fig. 1 is the structural representation that has the pretreatment storehouse of two kinds of spray equipments in the device of the related a kind of processing of the present invention flue gas that contains dust.
Fig. 2 is the structural representation that has the pretreatment storehouse of the pressurization spray equipment at top in the device of the related a kind of processing of the present invention flue gas that contains dust.
Fig. 3 is the structural representation in luminous energy storehouse in the device of the related a kind of processing of the present invention flue gas that contains dust.
Fig. 4 is that in the method for the related a kind of processing of the present invention flue gas that contains dust, light helps Fe in Fenton's reaction (II) to be oxidized to the reaction equation of Fe (III).
Fig. 5 is that in the method for the related a kind of processing of the present invention flue gas that contains dust, light helps the first Fe (III) in Fenton's reaction to be reduced to the reaction equation of Fe (II).
Fig. 6 is that in the method for the related a kind of processing of the present invention flue gas that contains dust, light helps the second Fe (III) in Fenton's reaction to be reduced to the reaction equation of Fe (II).
Fig. 7 is that in the method for the related a kind of processing of the present invention flue gas that contains dust, light helps the third Fe (III) in Fenton's reaction to be reduced to the reaction equation of Fe (II).
Fig. 8 is that in the method for the related a kind of processing of the present invention flue gas that contains dust, light helps hydroxyl radical free radical and hydrocarbon reaction in Fenton's reaction to form the chemical equation of water and alkyl diradical.
Fig. 9 is that in the method for the related a kind of processing of the present invention flue gas that contains dust, light helps alkyl diradical in Fenton's reaction to react the chemical equation that forms peroxy radical with molecular oxygen.
Figure 10 is C in the method for the related a kind of processing of the present invention flue gas that contains dust
2h
6be broken down into the chemical equation of carbon dioxide and water.
Wherein, 1-1 is pretreatment storehouse access cover, 1-2 is pretreatment storehouse spray equipment, 1-3 is infundibulate collecting board, 1-4 is pretreatment storehouse air inlet, 1-5 is thief hatch, 1-6 is pretreatment storehouse suction pump, 1-7 is reservoir, 1-8 is pretreatment storehouse liquid outlet, 1-9 is pretreatment storehouse liquid level meter, 1-10 is pretreatment storehouse inlet, 1-11 is pretreatment storehouse access door, 1-12 is gas outlet, pretreatment storehouse, 1-13 is pretreatment warehouse, 2-1 is gas outlet, luminous energy storehouse, 2-2 is luminous energy storehouse air inlet, 2-3 is luminous energy storehouse inlet, 2-4 is gas-liquid mixed passage, 2-5 is luminous energy storehouse suction pump, 2-6 is luminous energy storehouse liquid outlet, 2-7 is luminous energy storehouse liquid level meter, 2-8 is luminous energy storehouse spray equipment, 2-9 is luminous energy storehouse access cover, 2-10 light irradiation apparatus, 2-11 is luminous energy warehouse.
(5) detailed description of the invention:
Embodiment 1: the method for the flue gas that a kind of processing contains dust, is characterized in that comprising the following steps:
(1) in pretreating containers, add water;
(2) in reaction vessel, add and contain Fenton reagent and use Alpha-hydroxy acid for adjusting pH value to the solution that is less than or equal to 3, described Fenton reagent comprises metal system and the hydrogen peroxide that light can occur help Fenton's reaction;
The mass percent of described solution allocation hydrogen peroxide and water is 5%;
Hydrogen peroxide and metal system mol ratio are about 30:1;
(3), according to the optical absorption peak of metal system, illumination system is set in reaction vessel;
(4) waste gas is passed into pretreating containers, fully contact with liquid, the solid particle that makes diameter be greater than 10 microns is stayed in liquid;
(5) by contain diameter be greater than 10 microns solid particle liquid derive pretreating containers;
(6) flue gas after purifying is discharged to pretreating containers;
(7) flue gas of step (6) being discharged passes into reaction vessel, and with the abundant haptoreaction of Fenton reagent, making the hydrocarbons decompose in flue gas is carbon dioxide and water, and carbon granule and Oxidation of Carbon Monoxide are carbon dioxide;
(8) will react after solution derive, and periodic monitor derives the concentration of Fenton reagent in solution, according to the situation of monitoring, adds the new solution that contains Fenton reagent and makes solution composition keep stable;
(9) purified gas is discharged to reaction vessel.
After step described above (1), add step (1 ') for using nitric acid to adjust below pH value to 3, then add oxidising agent, make carbon granule be oxidized to carbon monoxide, described oxidising agent is hydrogen peroxide, and the volume ratio of hydrogen peroxide and water is 1:20.
The concentration of the oxidising agent in step described above (1 ') needs monitoring in every 10 hours and supplements as required oxidising agent to make oxidising agent concentration stabilize in solution.
Metal system in step described above (2) is Fe (II)/F (III) system; In the time that metal system is Fe (II)/F (III) system, illumination is that wavelength is the ultraviolet light of 200nm～400nm.
Fe described above (II)/F (III) system is less than the FeSO of 20 nanometers by diameter
4and Fe
3o
4particle forms.
In step described above (4) fully the mode of contact for liquid is sprayed to gas by spray equipment, the area and the time that contact with liquid to increase waste gas.
Flue gas in step described above (4) enters from pretreating containers bottom, and direction level is also miter angle with chamber wall, to increase the time contacting with liquid.
In step described above (5), derive the liquid of pretreating containers and removing after the particle that is greater than 10 microns, got back in pretreating containers by pipeline is defeated by suction pump.
The consumption of hydrogen peroxide described above was collected sample by close monitoring by every 10 hours, and used iodine/potassium permanganate (I/KMnO4) titration to observe the consumption rate of peroxide.
'alpha '-hydroxy acids described above is lactic acid.
The mode fully contacting in step described above (7) is for directly to pass into gas liquid and liquid is sprayed to gas by spray equipment.
Realize a device for method described above, comprise pretreatment storehouse and luminous energy storehouse, described pretreatment storehouse comprises pretreatment warehouse 1-13, pretreatment storehouse spray equipment 1-2, pretreatment storehouse air inlet 1-4, pretreatment storehouse suction pump 1-6, reservoir 1-7, pretreatment storehouse liquid outlet 1-8, pretreatment storehouse inlet 1-10 and pretreatment storehouse gas outlet 1-12, the bottom of described pretreatment warehouse 1-13 is reservoir 1-7, pretreatment storehouse liquid outlet 1-8 is arranged on reservoir 1-7 place, described pretreatment storehouse air inlet 1-4, pretreatment storehouse inlet 1-10 and pretreatment storehouse gas outlet 1-12 are arranged on the pretreatment warehouse 1-13 of reservoir 1-7 top, pretreatment storehouse gas outlet 1-12 is above the air inlet 1-4 of pretreatment storehouse, described pretreatment storehouse spray equipment 1-2 is arranged in pretreatment warehouse 1-13, described pretreatment storehouse suction pump 1-6 connects the output of reservoir 1-7 and the input of pretreatment storehouse spray equipment 1-2 by pipeline, described luminous energy storehouse comprises 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 passage 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 luminous energy storehouse air inlet 2-2 and luminous energy storehouse gas outlet 2-1 are arranged on the top of luminous energy warehouse 2-11, described luminous energy storehouse inlet 2-3 is arranged on the middle part of luminous energy warehouse 2-11, described luminous energy storehouse liquid outlet 2-6 is arranged on the bottom of luminous energy warehouse 2-11, described gas-liquid mixed passage 2-4, luminous energy storehouse spray equipment 2-8 and light irradiation apparatus 2-10 are positioned at luminous energy warehouse 2-11, the input of gas-liquid mixed passage 2-4 connects luminous energy storehouse air inlet 2-2, the output of gas-liquid mixed passage 2-4 is positioned at the position at the bottom of luminous energy warehouse 2-11 bottom approaches storehouse, described luminous energy storehouse suction pump 2-5 connects the output of luminous energy warehouse 2-11 bottom and the input of luminous energy storehouse spray equipment 2-8 by pipeline, described pretreatment storehouse gas outlet 1-12 connects luminous energy storehouse air inlet 2-2.
Pretreatment warehouse 1-13 described above top arranges pretreatment storehouse access cover 1-1, pretreatment storehouse access door 1-11 is set on the sidewall of pretreatment warehouse 1-13, reservoir 1-7 top arranges infundibulate collecting board 1-3, and pretreatment storehouse liquid level meter 1-9 and thief hatch 1-5 are set on the sidewall of reservoir 1-7.
Pretreatment described above storehouse spray equipment 1-2 is arranged on the pressurization spray equipment of pretreatment warehouse 1-13 inner top and is arranged on the atomizing spray equipment on pretreatment warehouse 1-13 inwall.(seeing Fig. 1)
The spray droplet of pressurization spray equipment described above is uniform line; The diameter that every dropping liquid drips is 2～3 millimeters, 8 millimeters, interval between every.
Pretreatment warehouse 1-13 described above is made up of stainless steel metal plate.
Pretreatment described above storehouse suction pump 1-6 is acidproof water pump.
Luminous energy warehouse 2-11 described above is made up of stainless steel metal plate, scribbles 2-3mm Teflon (Teflon) corrosion-inhibiting coating on luminous energy warehouse 2-11 inwall.
Luminous energy storehouse liquid level meter 2-7 is set on the sidewall of luminous energy warehouse 2-11 described above, and luminous energy warehouse 2-11 top arranges luminous energy storehouse access cover 2-9.
Light irradiation apparatus 2-10 described above is quartz ampoule uviol lamp.
The method of work of dust arrester in the present embodiment:
15 tons of coal-burning boilers for the approximately 30 tons of coals that burn every day are example:
The method of work in pretreatment storehouse:
(1) diameter of pretreatment warehouse 1-13 and be highly respectively 2.7 meters and 3 meters;
(2) water of 40 centimetres of water levels of injection, forms 2289 premium on currency, uses nitric acid to adjust below pH value to 3, then adds 35% hydrogen peroxide of 327 liters;
(3) open pretreatment storehouse suction pump 1-6, pretreatment storehouse spray equipment 1-2 starts working;
(4) flue gas enters in pretreatment warehouse 1-13 from the direction of pretreatment storehouse air inlet 1-4 and pretreatment warehouse 1-13 inwall angle 45 degree, makes flue gas in the time moving up, produce helical effect;
(5) in flue gas, diameter is greater than the solid particle of 10 microns and stays in liquid;
(6) liquid that contains diameter and be greater than the solid particle of 10 microns is derived from pretreatment storehouse liquid outlet 1-8;
(7) flue gas after purifying is discharged from pretreatment storehouse gas outlet 1-12;
(8) hydrogen peroxide (H
2o
2) the sample collection of consumption by every 10 hours by close monitoring, and use iodine/potassium permanganate (I/KMnO
4) titration observes the consumption rate of peroxide.
The method of work in luminous energy storehouse:
(1) diameter of luminous energy warehouse 2-11 and be highly respectively 2.7 meters with 2.25 meters;
(2), to the water of 5725 liters of luminous energy warehouse 2-11 injections, add the 35%H of 817 liters
2o
2feSO with 64 kilograms
4(FeSO
4: H
2o
2=1:5w/w);
(3) 4 1000W widebands are set in luminous energy warehouse 2-11, wavelength is the UV light (FeSO that 200nm to 400nm, light absorption peak value equal 365nm
4there is the highest absorption coefficient at 365nm);
(4) open luminous energy storehouse spray equipment 2-8;
(5) flue gas of pretreatment storehouse gas outlet 1-12 being discharged passes into luminous energy warehouse 2-11 from luminous energy storehouse air inlet 2-2, in gas-liquid mixed passage 2-4 place and liquid haptoreaction, after gas emersion liquid level, again with the drop haptoreaction of luminous energy storehouse spray equipment 2-8 ejection, making the hydrocarbons decompose in flue gas is carbon dioxide and water, carbon granule and Oxidation of Carbon Monoxide are carbon dioxide, and wherein, hydrocarbon common in flue gas comprises C
2h
6can in luminous energy storehouse, be decomposed (seeing Figure 10);
(6) will react rear solution derives from luminous energy storehouse liquid outlet 2-6, hydrogen peroxide (H
2o
2) the sample collection of consumption by every 10 hours by close monitoring, and use iodine/potassium permanganate (I/KMnO
4) titration observes the consumption rate of peroxide, according to the CO in flue gas
2content, measuring pump will supplement hydrogen peroxide to luminous energy warehouse 2-11 from receiver;
(7) purified gas is discharged to luminous energy warehouse 2-11 from luminous energy storehouse gas outlet 2-1.
According to the industrial test data of 15 tons of coal-burning boilers described in the present embodiment, the method for the invention has reached 95.4% PM2.5 clearance (from 105 microgram/cubic meters to 5 microgram/cubic meters).
Embodiment 2:
A method for the flue gas that processing contains dust, is characterized in that comprising the following steps:
(1) in pretreating containers, add water;
(2) in reaction vessel, add and contain Fenton reagent and use Alpha-hydroxy acid for adjusting pH value to the solution that is less than or equal to 3, described Fenton reagent comprises metal system and the hydrogen peroxide that light can occur help Fenton's reaction;
The mass percent of described solution allocation hydrogen peroxide and water is 4%;
Hydrogen peroxide and metal system mol ratio are 10:1;
(3), according to the optical absorption peak of metal system, illumination system is set in reaction vessel;
(4) waste gas is passed into pretreating containers, fully contact with liquid, the solid particle that makes diameter be greater than 10 microns is stayed in liquid;
(5) by contain diameter be greater than 10 microns solid particle liquid derive pretreating containers;
(6) flue gas after purifying is discharged to pretreating containers;
(7) flue gas of step (6) being discharged passes into reaction vessel, and with the abundant haptoreaction of Fenton reagent, making the hydrocarbons decompose in flue gas is carbon dioxide and water, and carbon granule and Oxidation of Carbon Monoxide are carbon dioxide;
(8) will react after solution derive, and periodic monitor derives the concentration of Fenton reagent in solution, according to the situation of monitoring, adds the new solution that contains Fenton reagent and makes solution composition keep stable;
(9) purified gas is discharged to reaction vessel.
After step described above (1), add step (1 ') for using nitric acid to adjust below pH value to 3, then add oxidising agent, make carbon granule be oxidized to carbon monoxide, described oxidising agent is the mixture of molybdenum oxide and tungsten oxide, the diameter of molybdenum oxide and tungsten oxide solid particle is less than 20nm, the mol ratio of molybdenum oxide and tungsten oxide is 1:1, and the amount ratio of molybdenum oxide and water is 10mol/L, and the amount ratio of tungsten oxide and water is 10mol/L.
The concentration of the oxidising agent in step described above (1 ') needs periodic monitor and supplements as required oxidising agent to make oxidising agent concentration stabilize in solution.
Metal system in step described above (2) is Cu (I)/Cu (II) system, and illumination is that wavelength is the visible ray of 600nm～800nm.
Cu described above (I)/Cu (II) system is less than the Cu of 20 nanometers by diameter
2o and CuSO
4particle forms.
In step described above (4) fully the mode of contact for liquid is sprayed to gas by spray equipment, the area and the time that contact with liquid to increase waste gas.
Flue gas in step described above (4) enters from pretreating containers bottom, and direction level is also miter angle with chamber wall, to increase the time contacting with liquid.
In step described above (5), derive the liquid of pretreating containers and removing after the particle that is greater than 10 microns, got back in pretreating containers by pipeline is defeated by suction pump.
Hydrogen peroxide described above is that diameter is less than described in the peromag of 50 nanometers and after reaction, produces in solution.
The consumption of hydrogen peroxide described above was collected sample by close monitoring by every 8 hours, and used iodine/potassium permanganate (I/KMnO4) titration to observe the consumption rate of peroxide.
'alpha '-hydroxy acids described above is glycolic.
The mode fully contacting in step described above (7) is for directly to pass into gas liquid and liquid is sprayed to gas by spray equipment.
Realize a dust arrester for method described above, comprise pretreatment storehouse and luminous energy storehouse, described pretreatment storehouse comprises pretreatment warehouse 1-13, pretreatment storehouse spray equipment 1-2, pretreatment storehouse air inlet 1-4, pretreatment storehouse suction pump 1-6, reservoir 1-7, pretreatment storehouse liquid outlet 1-8, pretreatment storehouse inlet 1-10 and pretreatment storehouse gas outlet 1-12, the bottom of described pretreatment warehouse 1-13 is reservoir 1-7, pretreatment storehouse liquid outlet 1-8 is arranged on reservoir 1-7 place, described pretreatment storehouse air inlet 1-4, pretreatment storehouse inlet 1-10 and pretreatment storehouse gas outlet 1-12 are arranged on the pretreatment warehouse 1-13 of reservoir 1-7 top, pretreatment storehouse gas outlet 1-12 is above the air inlet 1-4 of pretreatment storehouse, described pretreatment storehouse spray equipment 1-2 is arranged in pretreatment warehouse 1-13, described pretreatment storehouse suction pump 1-6 connects the output of reservoir 1-7 and the input of pretreatment storehouse spray equipment 1-2 by pipeline, described luminous energy storehouse comprises 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 passage 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 luminous energy storehouse air inlet 2-2 and luminous energy storehouse gas outlet 2-1 are arranged on the top of luminous energy warehouse 2-11, described luminous energy storehouse inlet 2-3 is arranged on the middle part of luminous energy warehouse 2-11, described luminous energy storehouse liquid outlet 2-6 is arranged on the bottom of luminous energy warehouse 2-11, described gas-liquid mixed passage 2-4, luminous energy storehouse spray equipment 2-8 and light irradiation apparatus 2-10 are positioned at luminous energy warehouse 2-11, the input of gas-liquid mixed passage 2-4 connects luminous energy storehouse air inlet 2-2, the output of gas-liquid mixed passage 2-4 is positioned at the position at the bottom of luminous energy warehouse 2-11 bottom approaches storehouse, described luminous energy storehouse suction pump 2-5 connects the output of luminous energy warehouse 2-11 bottom and the input of luminous energy storehouse spray equipment 2-8 by pipeline, described pretreatment storehouse gas outlet 1-12 connects luminous energy storehouse air inlet 2-2.
Pretreatment warehouse 1-13 described above top arranges pretreatment storehouse access cover 1-1, pretreatment storehouse access door 1-11 is set on the sidewall of pretreatment warehouse 1-13, reservoir 1-7 top arranges infundibulate collecting board 1-3, and pretreatment storehouse liquid level meter 1-9 and thief hatch 1-5 are set on the sidewall of reservoir 1-7.
Pretreatment described above storehouse spray equipment 1-2 is the pressurization spray equipment that is arranged on pretreatment warehouse 1-13 inner top.(seeing Fig. 2)
The spray droplet of pressurization spray equipment described above is uniform line; The diameter that every dropping liquid drips is 2～3 millimeters, 8 millimeters, interval between every.
Pretreatment warehouse 1-13 described above is made up of stainless steel metal plate.
Pretreatment described above storehouse suction pump 1-6 is acidproof water pump.
Luminous energy warehouse 2-11 described above is made up of stainless steel metal plate, scribbles 2-3mm Teflon (Teflon) corrosion-inhibiting coating on luminous energy warehouse 2-11 inwall.
Luminous energy storehouse liquid level meter 2-7 is set on the sidewall of luminous energy warehouse 2-11 described above, and luminous energy warehouse 2-11 top arranges luminous energy storehouse access cover 2-9.
Light irradiation apparatus 2-10 described above is visible lamp.
In the present embodiment, one of advantage that uses Cu (I)/Cu (II) system is Cu
2the light absorption peak value of O is at 600nm, CuSO
4light absorption peak value at 700nm, be all at the very little visible region (600-800nm, near-infrared) of harm.
Claims (22)
1. a method for the flue gas that processing contains dust, is characterized in that comprising the following steps:
(1) in pretreating containers, add water;
(2) in reaction vessel, add and contain Fenton reagent and use Alpha-hydroxy acid for adjusting pH value to the solution that is less than or equal to 3, described Fenton reagent comprises metal system and the hydrogen peroxide that light can occur help Fenton's reaction;
The mass percent of described solution allocation hydrogen peroxide and water is 3%～5%;
Hydrogen peroxide and metal system mol ratio are more than or equal to 10:1;
(3), according to the optical absorption peak of metal system, illumination system is set in reaction vessel;
(4) waste gas is passed into pretreating containers, fully contact with liquid, the solid particle that makes diameter be greater than 10 microns is stayed in liquid;
(5) by contain diameter be greater than 10 microns solid particle liquid derive pretreating containers;
(6) flue gas after purifying is discharged to pretreating containers;
(7) flue gas of step (6) being discharged passes into reaction vessel, and with the abundant haptoreaction of Fenton reagent, making the hydrocarbons decompose in flue gas is carbon dioxide and water, and carbon granule and Oxidation of Carbon Monoxide are carbon dioxide;
(8) will react after solution derive, and periodic monitor derives the concentration of Fenton reagent in solution, according to the situation of monitoring, adds the new solution that contains Fenton reagent and makes solution composition keep stable;
(9) purified gas is discharged to reaction vessel.
2. the method for the flue gas that a kind of processing contains dust according to claim 1, it is characterized in that adding step (1 ') for using nitric acid to adjust below pH value to 3 after described step (1), then add oxidising agent, make carbon granule be oxidized to carbon monoxide, described oxidising agent is hydrogen peroxide, the mixture of molybdenum oxide and tungsten oxide, the mixture of magnesia and magnesium hydroxide or di-iron trioxide, wherein, molybdenum oxide, tungsten oxide, magnesia, the diameter of magnesium hydroxide and di-iron trioxide solid particle is less than 20nm, the volume ratio of hydrogen peroxide and water is 1:18～22, the mol ratio of molybdenum oxide and tungsten oxide is 1:1, the mol ratio of magnesia and magnesium hydroxide is 1:1, the amount ratio of molybdenum oxide and water is more than or equal to 10mol/L, the amount ratio of tungsten oxide and water is more than or equal to 10mol/L, the amount ratio of magnesia and water is more than or equal to 10mol/L, the amount ratio of magnesium hydroxide and water is more than or equal to 10mol/L, the amount ratio of di-iron trioxide and water is more than or equal to 20mol/L.
3. the method for the flue gas that a kind of processing contains dust according to claim 2, is characterized in that the concentration of the oxidising agent in described step (1 ') needs periodic monitor and supplement as required oxidising agent to make oxidising agent concentration stabilize in solution.
4. the method for the flue gas that a kind of processing contains dust according to claim 1, is characterized in that the metal system in described step (2) is Fe (II)/F (III) system or Cu (I)/Cu (II) system; In the time that metal system is Fe (II)/F (III) system, illumination is that wavelength is the ultraviolet light of 200nm～400nm; In the time that metal system is Cu (I)/Cu (II) system, illumination is that wavelength is the visible ray of 600nm～800nm.
5. the method for the flue gas that a kind of processing contains dust according to claim 4, is characterized in that described Fe (II)/F (III) system is less than the FeSO of 20 nanometers by diameter
4and Fe
3o
4particle forms.
6. the method for the flue gas that a kind of processing contains dust according to claim 4, is characterized in that described Cu (I)/Cu (II) system is less than the Cu of 20 nanometers by diameter
2o and CuSO
4particle forms.
7. the method for the flue gas that a kind of processing contains dust according to claim 1, is characterized in that the mode fully contacting in described step (4) is for to spray by spray equipment liquid to gas, the area and the time that contact with liquid to increase waste gas.
8. the method for the flue gas that a kind of processing contains dust according to claim 1, it is characterized in that the flue gas in described step (4) enters from pretreating containers bottom, direction level is also 40～50 degree angles with chamber wall, to increase the time contacting with liquid.
9. the method for the flue gas that a kind of processing contains dust according to claim 1, it is characterized in that in described step (5), derive the liquid of pretreating containers and removing after the particle that is greater than 10 microns, got back in pretreating containers by pipeline is defeated by suction pump.
10. according to the method for the flue gas that described in claim 1 or 2, a kind of processing contains dust, it is characterized in that described hydrogen peroxide is that peromag, sodium peroxide or the calper calcium peroxide that diameter is less than 50 nanometers reacts rear generation in described solution.
11. according to the method for the flue gas that described in claim 1 or 3, a kind of processing contains dust, it is characterized in that the consumption of described hydrogen peroxide is by regularly collecting sample by close monitoring, and use iodine/potassium permanganate (I/KMnO4) titration to observe the consumption rate of peroxide.
The method of 12. flue gases that a kind of processing contains dust according to claim 1, is characterized in that described 'alpha '-hydroxy acids is glycolic, pyruvic acid or lactic acid.
The method of 13. flue gases that a kind of processing contains dust according to claim 1, the mode that it is characterized in that in described step (7) fully contact be gas is directly passed into liquid or by liquid by spray equipment at least one in gas spray.
Realize the device of method described in claim 1, comprise pretreatment storehouse and luminous energy storehouse for 14. 1 kinds, described pretreatment storehouse comprises pretreatment warehouse, pretreatment storehouse spray equipment, pretreatment storehouse air inlet, pretreatment storehouse suction pump, reservoir, pretreatment storehouse liquid outlet, pretreatment storehouse inlet and gas outlet, pretreatment storehouse, the bottom of described pretreatment warehouse is reservoir, pretreatment storehouse liquid outlet is arranged on reservoir place, described pretreatment storehouse air inlet, pretreatment storehouse inlet and gas outlet, pretreatment storehouse are arranged on the pretreatment warehouse of reservoir top, gas outlet, pretreatment storehouse is above the air inlet of pretreatment storehouse, described pretreatment storehouse spray equipment is arranged in pretreatment warehouse, described pretreatment storehouse suction pump connects the output of reservoir and the input of pretreatment storehouse spray equipment by pipeline, described luminous energy storehouse comprises 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, 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, 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, the input of gas-liquid mixed passage connects luminous energy storehouse air inlet, the output of gas-liquid mixed passage is positioned at the position at the bottom of luminous energy warehouse bottom approaches storehouse, described luminous energy storehouse suction pump connects the output of luminous energy warehouse bottom and the input of luminous energy storehouse spray equipment by pipeline, gas outlet, described pretreatment storehouse connects luminous energy storehouse air inlet.
The device of the flue gas that 15. a kind of processing according to claim 14 contain dust, it is characterized in that described pretreatment warehouse top arranges pretreatment storehouse access cover, pretreatment storehouse access door is set on the sidewall of pretreatment warehouse, reservoir top arranges infundibulate collecting board, and pretreatment storehouse liquid level meter and thief hatch are set on the sidewall of reservoir.
The device of the flue gas that 16. a kind of processing according to claim 14 contain dust, it is characterized in that described pretreatment storehouse spray equipment is the pressurization spray equipment that is arranged on pretreatment warehouse inner top, or for being arranged on the pressurization spray equipment of pretreatment warehouse inner top and being arranged on the atomizing spray equipment on pretreatment warehouse inwall.
The device of the flue gas that 17. a kind of processing according to claim 16 contain dust, the spray droplet that it is characterized in that described pressurization spray equipment is uniform line; The diameter that every dropping liquid drips is 2～3 millimeters, 6～10 millimeters, interval between every.
The device of the flue gas that 18. a kind of processing according to claim 14 contain dust, is characterized in that described pretreatment warehouse is made up of stainless steel metal plate.
The device of the flue gas that 19. a kind of processing according to claim 14 contain dust, is characterized in that described pretreatment storehouse suction pump is acidproof water pump.
The device of the flue gas that 20. a kind of processing according to claim 14 contain dust, is characterized in that described luminous energy warehouse is made up of stainless steel metal plate, on luminous energy warehouse inwall, scribbles corrosion-inhibiting coating.
The device of the flue gas that 21. a kind of processing according to claim 14 contain dust, is characterized in that, on the sidewall of described luminous energy warehouse, luminous energy storehouse liquid level meter is set, and luminous energy warehouse top arranges luminous energy storehouse access cover.
The device of the flue gas that 22. a kind of processing according to claim 14 contain dust, is characterized in that described light irradiation apparatus is quartz ampoule uviol lamp or visible lamp.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166067.2A CN103949128B (en) | 2014-04-23 | 2014-04-23 | A kind of method and device purifying the flue gas containing dust |
| PCT/CN2015/000268 WO2015161672A1 (en) | 2014-04-23 | 2015-04-17 | Method and equipment for purifying flue gas containing dust |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410166067.2A CN103949128B (en) | 2014-04-23 | 2014-04-23 | A kind of method and device purifying the flue gas containing dust |
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| CN103949128B CN103949128B (en) | 2016-08-17 |
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| CN201410166067.2A Expired - Fee Related CN103949128B (en) | 2014-04-23 | 2014-04-23 | A kind of method and device purifying the flue gas containing dust |
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| WO (1) | WO2015161672A1 (en) |
Cited By (5)
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|---|---|---|---|---|
| WO2015161672A1 (en) * | 2014-04-23 | 2015-10-29 | 林小晓 | Method and equipment for purifying flue gas containing dust |
| WO2015161673A1 (en) * | 2014-04-23 | 2015-10-29 | 林小晓 | Method and equipment for purifying flue gas by utilizing photo-fenton reaction |
| CN105536481A (en) * | 2016-01-22 | 2016-05-04 | 浙江工业大学 | Circulating spraying type ultraviolet Fenton oxidation organic waste gas treatment system and treatment method |
| CN107344064A (en) * | 2017-07-25 | 2017-11-14 | 北京凯创金源科技开发有限公司 | Exhaust treatment system |
| CN110665367A (en) * | 2019-10-14 | 2020-01-10 | 上海复绿环境科技有限公司 | Indoor environment VOC gas treatment equipment with automatic temperature control function |
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| CN114191907A (en) * | 2022-01-13 | 2022-03-18 | 卓宇轩 | Peculiar smell processing system |
| CN116392917A (en) * | 2023-05-26 | 2023-07-07 | 河北师范大学 | Device for improving growth of fine particles based on condition of low energy consumption of vapor phase |
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| 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 |
| CN103949128B (en) * | 2014-04-23 | 2016-08-17 | 林小晓 | A kind of method and device purifying the flue gas containing dust |
| CN103949144B (en) * | 2014-04-23 | 2016-09-21 | 林小晓 | A kind of method and device purifying the flue gas containing sulfur dioxide |
| 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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| US20100258428A1 (en) * | 2009-04-14 | 2010-10-14 | Gignac Pierre-Andre | Process for reducing the content of water soluble volatile organic compounds in a gas |
| CN102166471A (en) * | 2011-02-25 | 2011-08-31 | 东南大学 | Heterogeneous-Photo-Fenton-based integrated smoke gas purification system |
| CN102614760A (en) * | 2012-04-01 | 2012-08-01 | 苏州大学 | Waste gas purification device |
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| WO2015161672A1 (en) * | 2014-04-23 | 2015-10-29 | 林小晓 | Method and equipment for purifying flue gas containing dust |
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| CN107344064A (en) * | 2017-07-25 | 2017-11-14 | 北京凯创金源科技开发有限公司 | Exhaust treatment system |
| CN110665367A (en) * | 2019-10-14 | 2020-01-10 | 上海复绿环境科技有限公司 | Indoor environment VOC gas treatment equipment with automatic temperature control function |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015161672A1 (en) | 2015-10-29 |
| CN103949128B (en) | 2016-08-17 |
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