CN202237743U - System for simultaneously desulfurizing and denitrifying flue gas based on hydrogen peroxide functions - Google Patents
System for simultaneously desulfurizing and denitrifying flue gas based on hydrogen peroxide functions Download PDFInfo
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- CN202237743U CN202237743U CN2011202871988U CN201120287198U CN202237743U CN 202237743 U CN202237743 U CN 202237743U CN 2011202871988 U CN2011202871988 U CN 2011202871988U CN 201120287198 U CN201120287198 U CN 201120287198U CN 202237743 U CN202237743 U CN 202237743U
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- flue gas
- flue
- hydrogen peroxide
- deduster
- absorption tower
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Links
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 137
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000003546 flue gas Substances 0.000 title claims abstract description 97
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 23
- 238000010521 absorption reaction Methods 0.000 claims abstract description 62
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 18
- 230000003647 oxidation Effects 0.000 claims abstract description 14
- 238000002425 crystallisation Methods 0.000 claims abstract description 13
- 230000008025 crystallization Effects 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 10
- 229960002163 hydrogen peroxide Drugs 0.000 claims description 63
- 230000000694 effects Effects 0.000 claims description 34
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 239000012670 alkaline solution Substances 0.000 claims description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 239000013535 sea water Substances 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000000395 magnesium oxide Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 31
- 238000006477 desulfuration reaction Methods 0.000 abstract description 17
- 230000023556 desulfurization Effects 0.000 abstract description 10
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract 2
- 238000010531 catalytic reduction reaction Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 79
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 4
- 229910002089 NOx Inorganic materials 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 4
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 4
- 235000011130 ammonium sulphate Nutrition 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 3
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- ZWWCURLKEXEFQT-UHFFFAOYSA-N dinitrogen pentaoxide Chemical compound [O-][N+](=O)O[N+]([O-])=O ZWWCURLKEXEFQT-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- -1 sulfate radical Chemical class 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- LZDSILRDTDCIQT-UHFFFAOYSA-N dinitrogen trioxide Chemical compound [O-][N+](=O)N=O LZDSILRDTDCIQT-UHFFFAOYSA-N 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Abstract
The utility model relates to a system for simultaneously desulfurizing and denitrifying flue gas based on hydrogen peroxide functions. The system comprises a flue gas generating device, a dust collector and an absorption tower, wherein the dust collector is connected with the flue gas generating device through a flue, and the absorption tower is connected with the dust collector through a flue. A chimney is connected to the top of the absorption tower, the bottom of the absorption tower is connected with an oxidation fan and a liquid dust removal device, a salt liquid concentration and crystallization device is connected onto the liquid dust removal device, a finished product packaging device is connected onto the salt liquid concentration and crystallization device, a hydrogen peroxide storage tank is connected onto the flue and used for supplying hydrogen peroxide liquor, and the hydrogen peroxide liquor is vaporized into hydrogen peroxide gas after entering the flue. More than 85% denitrification rate and more than 95% desulfurization rate can be achieved for the flue gas by the system for simultaneously desulfurizing and denitrifying the flue gas based on the hydrogen peroxide functions, and the system is low in invested cost, low in energy consumption and convenient in use and cannot be matched by an SCR (selective catalytic reduction) method and a denitrification method through ozone oxidation.
Description
Technical field
The utility model relate to a kind of based on the hydrogen peroxide effect to the flue gas and desulfurizing and denitrifying system.
Background technology
Fire coal, natural gas, heavy oil etc. in utilizing process and the nitrogen oxide that produces in some Chemical Manufacture and oxysulfide atmospheric environment has been caused serious harm.The desulfur technology of at present air contaminant treatment generally being taked has several types of dry method, semidry method and wet methods etc.There are the not high shortcoming of desulfuration efficiency in dry method and semidry method.Limestone/gypsum method, ammonia process, magnesium oxide method, wet methods such as two subtractions are the methods that extensively adopt at present, but these several kinds technology just seem powerless aspect denitration.
The removal of nitrogen oxide method mainly contains two types: one type is the generation through the Combustion Process Control nitrogen oxide, and efficient is about 30～50%, and this method efficient is low, and causes the slagging scorification of stove interior conduit easily.Second type of gas denitrifying technology is SCR technology SCR American-European, the Japan and other countries extensive use, and denitration efficiency is generally 60%, but this method is in high temperature section; Dust is more in the flue gas; Be prone to cause obstruction, the wearing and tearing of catalyst, the heavy metal in the flyash also can cause catalyst poisoning, and operation and investment cost are very expensive; Therefore, the exploitation of the denitration technology of low-cost high-efficiency is imperative.
The utility model content
The utility model is to the above-mentioned deficiency that existing desulphurization denitration technology exists, provide a kind of based on the hydrogen peroxide effect to the flue gas and desulfurizing and denitrifying system.
The technical scheme that the utility model solves the problems of the technologies described above is following: a kind ofly based on the hydrogen peroxide effect flue gas and desulfurizing and denitrifying system is comprised the flue gas generation device; The deduster that links to each other with said flue gas generation device through flue; The absorption tower that links to each other with said deduster through flue; The top on said absorption tower is connected with chimney, and the bottom on said absorption tower is connected with oxidation fan and liquid dust arrester, is connected with the saline solution concentration and crystallization device on the said liquid dust arrester; Be connected with the finished product packing device on the said saline solution concentration and crystallization device; Be connected with the hydrogen peroxide storage tank on the said flue, said hydrogen peroxide storage tank is used to provide hydrogenperoxide steam generator, and is vaporized the formation hydrogen peroxide gas after making said hydrogenperoxide steam generator get into flue.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, be provided with alkaline solution in the said absorption tower, the bottom on said absorption tower is connected with supply pump, is connected with a plurality of solution shower nozzles on the said supply pump; Said alkaline solution is NaOH or KOH or Ca (OH)
2Or CaO or MgO or CaCO
3Or NH
3H
2O or NH
4HCO
3Or a kind of in the seawater.
Further, being provided with weight ratio in the said absorption tower is 1: 1 the alkaline solution and the mixture of organic catalyst; Said organic catalyst is the product LEXFINE that Israel Lextran company produces, and said alkaline solution is NaOH or KOH or Ca (OH)
2Or CaO or MgO or CaCO
3Or NH
3H
2O or NH
4HCO
3Or a kind of in the seawater.
Further; Said flue is provided with reaction warehouse; Said reaction warehouse comprises first hollow cylinder and second hollow cylinder that is set in said first hollow cylinder; The length of said second hollow cylinder is less than the length of first hollow cylinder; One end of said first hollow cylinder and an end of second hollow cylinder are connected to the two ends of a hollow round platform sidewall, and the other end of the other end of said first hollow cylinder and second hollow cylinder is connected to the two ends of another hollow round platform sidewall; Said hydrogen peroxide storage tank is connected on the flue between flue gas generation device and the deduster, perhaps is connected on the flue between deduster and the absorption tower.
Further, be connected with supply pump on the said hydrogen peroxide storage tank, be connected with check valve on the said supply pump, be connected with control valve on the said check valve, be connected with atomizer on the said control valve, said atomizer is arranged in the flue.
Further; The temperature of the flue gas in the flue between said flue gas generation device and the deduster is greater than or equal to 170 ℃; And the temperature of the flue gas in the flue between said deduster and the absorption tower is during less than 170 ℃; Said atomizer is arranged in the flue between flue gas generation device and the deduster, and said reaction warehouse is arranged between atomizer and the deduster.
Further; The temperature of the flue gas in the flue between said flue gas generation device and the deduster is greater than or equal to 170 ℃; And when the temperature of the flue gas in the flue between said deduster and the absorption tower is greater than or equal to 170 ℃; Said atomizer is arranged in the flue between flue gas generation device and the deduster, and said reaction warehouse is arranged between atomizer and the deduster.
Further; The temperature of the flue gas in the flue between said flue gas generation device and the deduster is greater than or equal to 170 ℃; And when the temperature of the flue gas in the flue between said deduster and the absorption tower is greater than or equal to 170 ℃; Said atomizer is arranged in the flue between deduster and the absorption tower, and said reaction warehouse is arranged between atomizer and the absorption tower.
The utility model also provides a kind of technical scheme that solves the problems of the technologies described above following: a kind of flue gas and desulfurizing and denitrifying method may further comprise the steps based on the hydrogen peroxide effect: at first, the hydrogenperoxide steam generator in the hydrogen peroxide storage tank is extracted the back spray into flue-gas temperature through atomizer and be greater than or equal in 170 ℃ the flue; It is vaporized under the effect of flue gas form hydrogen peroxide gas; Thereby the flue gas middle or low price attitude nitrogen oxide that the flue gas generation device produces is oxidized to high valence state nitrogen oxide soluble in water; Oxidizing sulfur dioxide generates sulfur trioxide; Hydrogenperoxide steam generator that wherein sprays into and nitrogen oxide mol ratio＞0.5 in the flue gas, reaction time >=0.3 second; Then, flue gas and hydrogen peroxide gas get into reaction warehouse simultaneously and carry out further oxidation, thereby guarantee that the lower valency nitrogen oxide in the flue gas is completely oxidized to high valence state nitrogen oxide soluble in water, and the sulfur dioxide complete oxidation generates sulfur trioxide; Then, the flue gas after oxidized gets into the absorption tower after getting into the deduster dedusting again, washs absorption by alkaline solution in the tower, absorbs nitrogen oxide and oxysulfide behind oxidized in the flue gas simultaneously; At last, after the flue gas that comes out from the absorption tower carries out liquid dedusting, condensing crystallizing and drying successively, pack again or dump.
The utility model also provides a kind of technical scheme that solves the problems of the technologies described above following: a kind of flue gas and desulfurizing and denitrifying method may further comprise the steps based on the hydrogen peroxide effect: at first, the flue gas that produces of flue gas generation device gets into deduster and carry out dedusting; Then; Hydrogenperoxide steam generator in the hydrogen peroxide storage tank is extracted the back to spray into flue-gas temperature after the dedusting through atomizer and is greater than or equal in 170 ℃ the flue; It is vaporized under the effect of the flue gas after the dedusting form hydrogen peroxide gas; Thereby the flue gas middle or low price attitude nitrogen oxide that the flue gas generation device produces is oxidized to high valence state nitrogen oxide soluble in water; Oxidizing sulfur dioxide generates sulfur trioxide, hydrogenperoxide steam generator that wherein sprays into and nitrogen oxide mol ratio＞0.5 in the flue gas, reaction time >=0.3 second; Then; Flue gas after the dedusting and hydrogen peroxide gas get into reaction warehouse simultaneously and carry out further oxidation; Thereby the lower valency nitrogen oxide in the flue gas after the assurance dedusting is completely oxidized to high valence state nitrogen oxide soluble in water, and the sulfur dioxide complete oxidation generates sulfur trioxide; Then, the flue gas after oxidized gets into the absorption tower, washs absorption by alkaline solution in the tower, absorbs nitrogen oxide and oxysulfide behind oxidized in the flue gas simultaneously after chimney enters atmosphere; At last, the inner absorption liquid in absorption tower absorbs through circulating repeatedly, and after the weight percent concentration of the salinity in the absorption liquid reached 35%～40%, come out to carry out successively from the bottom, absorption tower liquid dedusting, condensing crystallizing and drying were packed or dumped.
The beneficial effect of the utility model is: the utility model can make flue gas reach the desulfurization degree more than the denitration rate and 95% more than 85% based on the hydrogen peroxide effect to the flue gas and desulfurizing and denitrifying system; This cover system cost of investment is cheap; It is low and easy to use that energy consumes, be SCR method and ozone oxidation method denitration method can not compare.
Description of drawings
Fig. 1 is the structural representation to flue gas and desulfurizing and denitrifying system embodiment 1 of the utility model based on the hydrogen peroxide effect;
Fig. 2 is the structural representation to flue gas and desulfurizing and denitrifying system embodiment 2 of the utility model based on the hydrogen peroxide effect;
Fig. 3 is the front view of the utility model reaction warehouse;
Fig. 4 is the side view of the utility model reaction warehouse;
Fig. 5 is the structural representation to flue gas and desulfurizing and denitrifying system embodiment 3 of the utility model based on the hydrogen peroxide effect;
Fig. 6 is the structural representation to flue gas and desulfurizing and denitrifying system embodiment 4 of the utility model based on the hydrogen peroxide effect.
The specific embodiment
Below in conjunction with accompanying drawing the principle and the characteristic of the utility model are described, institute gives an actual example and only is used to explain the utility model, is not the scope that is used to limit the utility model.
In the nitrogen oxide of fire coal boiler fume, nitric oxide accounts for more than 90%, other be nitrogen dioxide etc.; Nitric oxide is one of more unmanageable polluter, when it is oxidized to the nitrogen dioxide of high valence state, nitrogen trioxide; Can generate nitric acid and nitrous acid with the water reaction behind the dinitrogen pentoxide, very easily removed, through in flue, adding the hydrogen peroxide of steam state by the wet absorption device; Hydrogen peroxide and nitric oxide production mol ratio can be high valence state nitrogen oxide with oxidation of nitric oxide greater than 0.5, remove with the wet absorption tower; Part sulfur dioxide also can be oxidized to sulfur trioxide simultaneously; And sulfur trioxide is more water-soluble more easily than sulfur dioxide, and therefore the afterbody behind the steam state hydrogen peroxide oxidation cooperates the wet absorption device, just can realize desulphurization denitration simultaneously.Denitration efficiency is relevant with the steam state amount of hydrogen peroxide that sprays into, and for the system that is equipped with wet desulphurization device (or water dust scrubber), then can carry out appropriate reconstruction to it, and is supporting with the method for the utility model, practices thrift cost of investment.Absorption liquid is an alkali lye; Recycle; The sulfate of enrichment and nitrate through dedusting, concentrate, crystallization can be sold or further handle; The utility model and existing organic catalysis method (being the mixture that uses alkaline solution and organic catalyst in the absorption tower) combine, more can prevent in decomposition and the ammonia process of inferior sulfate radical and nitrite anions and after the escaping of ammonia.
As shown in Figure 1; In the present embodiment, saidly the flue gas and desulfurizing and denitrifying system is comprised flue gas generation device 1 (in the present embodiment for boiler), the deduster 3 that links to each other with said flue gas generation device 1 through flue based on the hydrogen peroxide effect; The absorption tower 4 that links to each other with said deduster 3 through flue; The top on said absorption tower 4 is connected with chimney 5, and the bottom on said absorption tower 4 is connected with oxidation fan 9 and liquid dust arrester 6, is connected with saline solution concentration and crystallization device 7 on the said liquid dust arrester 6; Be connected with finished product packing device 8 on the said saline solution concentration and crystallization device 7; Be connected with hydrogen peroxide storage tank 10 on the flue between said flue gas generation device 1 and the deduster 3, said hydrogen peroxide storage tank 10 is used to provide hydrogenperoxide steam generator, and is vaporized the formation hydrogen peroxide gas after making said hydrogenperoxide steam generator get into flue.Said oxidation fan 9 helps not oxidized SO
3 2-And NO
2 -Forced oxidation.Be connected with supply pump on the said hydrogen peroxide storage tank 10; Be connected with check valve on the said supply pump; Be connected with control valve behind the said check valve, be connected with atomizer on the said control valve, said atomizer is arranged in the flue between flue gas generation device 1 and the deduster 3.4 tops, said absorption tower are provided with demister, and the bottom is provided with reservoir, is provided with alkaline solution in the said reservoir, and the bottom on said absorption tower 4 is connected with supply pump, are connected with a plurality of solution shower nozzles on the said supply pump.Said alkaline solution is NaOH, KOH, Ca (OH)
2, CaO, MgO, CaCO
3, NH
3H
2O, NH
4HCO
3With one or more the mixture in the seawater.
When the system of use embodiment 1 carries out the desulphurization denitration operation; Wherein, The molal quantity of hydrogenperoxide steam generator straying quatity is 1.1 times of nitric oxide molal quantity; Oxidization time 0.5 second, the desulfurization off sulfide effect of vaporized hydrogen peroxide is as shown in table 1 under different temperatures, and the detecting instrument that nitrogen oxide in the flue gas and sulfur dioxide adopt is: NOVA2000:
Table 1 uses the system of embodiment 1 to carry out the effect table of desulphurization denitration
Annotate: smoke inlet NOx:316mg/m
3SO
2: 803mg/m
3
Wet method ammonia process technology is joined on the absorption tower, and absorption liquid is NH
3H
2O recycles; After flue gas is absorbed washing, send into chimney, saline solution ammonium sulfate after the absorption and ammonium nitrate enrichment after dedusting, concentrate, crystallization, dehydration be the finished product chemical fertilizer; Nitrogen content is about 25%, and the absorbent of this instance also can be water, NaOH, KOH, Ca (OH)
2, CaO, CaCO
3, NH
3H
2O, NH
4HCO
3, seawater etc. wherein one or more; From table 1, can see; The system for desulfuration and denitration of embodiment 1 is greater than or equal to 170 ℃ in the temperature of the flue gas in the flue between flue gas generation device and the deduster; The effect of desulphurization denitration is best, and the denitration rate can reach more than 85% and can reach more than 95% with desulfurization degree.
As shown in Figure 2; Be with embodiment 1 difference; Flue between said atomizer and the deduster 3 is provided with reaction warehouse 2; Shown in Fig. 3 and 4, said reaction warehouse comprises first hollow cylinder 11 and second hollow cylinder 12 that is set in said first hollow cylinder 11, and the length of said second hollow cylinder 12 is less than the length 11 of first hollow cylinder; One end of one end of said first hollow cylinder 11 and second hollow cylinder 12 is connected to the two ends of a hollow round platform sidewall 13, and the other end of the other end of said first hollow cylinder 11 and second hollow cylinder 12 is connected to the two ends of another hollow round platform 14 sidewalls.
When the system of use embodiment 2 carries out the desulphurization denitration operation; Wherein, The molal quantity of hydrogenperoxide steam generator straying quatity is 0.8 times of nitric oxide molal quantity; Oxidization time 0.5 second, the desulfurization off sulfide effect of vaporized hydrogen peroxide is as shown in table 2 under different temperatures, and the detecting instrument that nitrogen oxide in the flue gas and sulfur dioxide adopt is: NOVA2000:
Table 2 uses the system of embodiment 2 to carry out the effect table of desulphurization denitration
Annotate: smoke inlet NOx:330mg/m
3SO
2: 810mg/m
3
The absorption tower is joined and is NH
3H
2O technology, absorption liquid are NH
3H
2O recycles; After flue gas is absorbed washing, send into chimney, saline solution ammonium sulfate after the absorption and ammonium nitrate enrichment after dedusting, concentrate, crystallization, dehydration be the finished product chemical fertilizer; Nitrogen content is about 25%, and the absorbent of this instance also can be water, NaOH, KOH, Ca (OH)
2, CaO, CaCO
3, NH
3H
2O, NH
4HCO
3, seawater etc. wherein one or more, can see that from table 2 system for desulfuration and denitration of embodiment 2 is greater than or equal to 170 ℃ in the temperature of the flue gas in the flue between flue gas generation device and the deduster; The effect of desulphurization denitration is best, and the denitration rate can reach more than 85% and can reach more than 95% with desulfurization degree, and after using reaction warehouse; Under uniform temp; The denitration desulfuration efficiency is apparently higher than the situation of not using reaction warehouse, and this is because this reaction warehouse can make reactant fully mix in moment, and increases exponentially reaction power; Be not only applicable to the gas-solid/liquid/gas reactions occasion in the chemical process, also be applicable to the gas-liquid reaction occasion in the chemical process.
As shown in Figure 5 and embodiment 1 difference is that said hydrogen peroxide storage tank 10 is connected on the flue between deduster 3 and the absorption tower 4, when the temperature of the flue gas in the flue between said deduster and the absorption tower is greater than or equal to 170 ℃.
When the system of use embodiment 3 carries out the desulphurization denitration operation; Wherein, The molal quantity of hydrogenperoxide steam generator straying quatity is 1.8 times of nitric oxide molal quantity; Oxidization time 0.5 second, the desulfurization off sulfide effect of vaporized hydrogen peroxide is as shown in table 3 under different temperatures, and the detecting instrument that nitrogen oxide in the flue gas and sulfur dioxide adopt is: NOVA2000:
Table 3 uses the system of embodiment 3 to carry out the effect table of desulphurization denitration
Annotate: smoke inlet NOx:318mg/m
3SO
2: 815mg/m
3
Wet method ammonia process technology is joined on the absorption tower, and absorption liquid is NH
3H
2O recycles; After flue gas is absorbed washing, send into chimney, saline solution ammonium sulfate after the absorption and ammonium nitrate enrichment after dedusting, concentrate, crystallization, dehydration be the finished product chemical fertilizer; Nitrogen content is about 25%, and the absorbent of this instance also can be water, NaOH, KOH, Ca (OH)
2, CaO, CaCO
3, NH
3H
2O, NH
4HCO
3, seawater etc. wherein one or more; From table 3, can see; The system for desulfuration and denitration of embodiment 3 is greater than or equal to 170 ℃ in the temperature of the flue gas in the flue between flue gas generation device and the deduster; The effect of desulphurization denitration is best, and the denitration rate can reach more than 85% and can reach more than 95% with desulfurization degree.
As shown in Figure 6 and embodiment 3 differences are that the flue between said atomizer and the absorption tower 4 is provided with reaction warehouse 2, and the structure of this reaction warehouse 2 is the same with reaction warehouse structure among the embodiment 2.
When the system of use embodiment 4 carries out the desulphurization denitration operation; Wherein, The molal quantity of hydrogenperoxide steam generator straying quatity is 1.5 times of nitric oxide molal quantity; Oxidization time 0.5 second, the desulfurization off sulfide effect of vaporized hydrogen peroxide is as shown in table 4 under different temperatures, and the detecting instrument that nitrogen oxide in the flue gas and sulfur dioxide adopt is: NOVA2000:
Table 4 uses the system of embodiment 4 to carry out the effect table of desulphurization denitration
Annotate: smoke inlet NOx:327mg/m
3SO
2: 806mg/m
3
Wet method ammonia process technology is joined on the absorption tower, and absorption liquid is NH
3H
2O recycles; After flue gas is absorbed washing, send into chimney, saline solution ammonium sulfate after the absorption and ammonium nitrate enrichment after dedusting, concentrate, crystallization, dehydration be the finished product chemical fertilizer; Nitrogen content is about 25%, and the absorbent of this instance also can be water, NaOH, KOH, Ca (OH)
2, CaO, CaCO
3, NH
3H
2O, NH
4HCO
3, seawater etc. wherein one or more; Can see that from table 4 system for desulfuration and denitration of embodiment 4 is greater than or equal to 170 ℃ in the temperature of the flue gas in the flue between flue gas generation device and the deduster, the effect of desulphurization denitration is best; The denitration rate can reach more than 85% and can reach more than 95% with desulfurization degree; And behind the use reaction warehouse, under uniform temp, the denitration desulfuration efficiency is apparently higher than the situation of not using reaction warehouse.
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (8)
- One kind based on the hydrogen peroxide effect to the flue gas and desulfurizing and denitrifying system; Comprise the flue gas generation device, the deduster that links to each other with said flue gas generation device through flue, the absorption tower that links to each other with said deduster through flue; The top on said absorption tower is connected with chimney; The bottom on said absorption tower is connected with oxidation fan and liquid dust arrester, is connected with the saline solution concentration and crystallization device on the said liquid dust arrester, is connected with the finished product packing device on the said saline solution concentration and crystallization device; It is characterized in that; Be connected with the hydrogen peroxide storage tank on the said flue, said hydrogen peroxide storage tank is used to provide hydrogenperoxide steam generator, and is vaporized the formation hydrogen peroxide gas after making said hydrogenperoxide steam generator get into flue.
- 2. according to claim 1 based on the hydrogen peroxide effect to the flue gas and desulfurizing and denitrifying system, it is characterized in that be provided with alkaline solution in the said absorption tower, the bottom on said absorption tower is connected with supply pump, be connected with a plurality of solution shower nozzles on the said supply pump; Said alkaline solution is NaOH or KOH or Ca (OH) 2Or CaO or MgO or CaCO 3Or NH 3H 2O or NH 4HCO 3Or a kind of in the seawater.
- 3. according to claim 1 based on the hydrogen peroxide effect to the flue gas and desulfurizing and denitrifying system, it is characterized in that being provided with weight ratio in the said absorption tower is 1: 1 the alkaline solution and the mixture of organic catalyst; Said organic catalyst is the product LEXFINE that Israel Lextran company produces, and said alkaline solution is NaOH or KOH or Ca (OH) 2Or CaO or MgO or CaCO 3Or NH 3H 4O or NH 4HCO 3Or a kind of in the seawater.
- 4. according to claim 1 based on the hydrogen peroxide effect to the flue gas and desulfurizing and denitrifying system; It is characterized in that; Said flue is provided with reaction warehouse; Said reaction warehouse comprises first hollow cylinder and second hollow cylinder that is set in said first hollow cylinder; The length of said second hollow cylinder is less than the length of first hollow cylinder, and an end of said first hollow cylinder and an end of second hollow cylinder are connected to the two ends of a hollow round platform sidewall, and the other end of the other end of said first hollow cylinder and second hollow cylinder is connected to the two ends of another hollow round platform sidewall; Said hydrogen peroxide storage tank is connected on the flue between flue gas generation device and the deduster, perhaps is connected on the flue between deduster and the absorption tower.
- 5. according to claim 4 based on the hydrogen peroxide effect to the flue gas and desulfurizing and denitrifying system; It is characterized in that; Be connected with supply pump on the said hydrogen peroxide storage tank, be connected with check valve on the said supply pump, be connected with control valve on the said check valve; Be connected with atomizer on the said control valve, said atomizer is arranged in the flue.
- 6. according to claim 5 based on the hydrogen peroxide effect to the flue gas and desulfurizing and denitrifying system; It is characterized in that; The temperature of the flue gas in the flue between said flue gas generation device and the deduster is greater than or equal to 170 ℃; And the temperature of the flue gas in the flue between said deduster and the absorption tower is during less than 170 ℃, and said atomizer is arranged in the flue between flue gas generation device and the deduster, and said reaction warehouse is arranged between atomizer and the deduster.
- 7. according to claim 5 based on the hydrogen peroxide effect to the flue gas and desulfurizing and denitrifying system; It is characterized in that; The temperature of the flue gas in the flue between said flue gas generation device and the deduster is greater than or equal to 170 ℃; And when the temperature of the flue gas in the flue between said deduster and the absorption tower was greater than or equal to 170 ℃, said atomizer was arranged in the flue between flue gas generation device and the deduster, and said reaction warehouse is arranged between atomizer and the deduster.
- 8. according to claim 5 based on the hydrogen peroxide effect to the flue gas and desulfurizing and denitrifying system; It is characterized in that; The temperature of the flue gas in the flue between said flue gas generation device and the deduster is greater than or equal to 170 ℃; And when the temperature of the flue gas in the flue between said deduster and the absorption tower was greater than or equal to 170 ℃, said atomizer was arranged in the flue between deduster and the absorption tower, and said reaction warehouse is arranged between atomizer and the absorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202871988U CN202237743U (en) | 2011-08-09 | 2011-08-09 | System for simultaneously desulfurizing and denitrifying flue gas based on hydrogen peroxide functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202871988U CN202237743U (en) | 2011-08-09 | 2011-08-09 | System for simultaneously desulfurizing and denitrifying flue gas based on hydrogen peroxide functions |
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|---|---|
| CN202237743U true CN202237743U (en) | 2012-05-30 |
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ID=46099048
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|---|---|---|---|
| CN2011202871988U Expired - Fee Related CN202237743U (en) | 2011-08-09 | 2011-08-09 | System for simultaneously desulfurizing and denitrifying flue gas based on hydrogen peroxide functions |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327735A (en) * | 2011-08-09 | 2012-01-25 | 中悦浦利莱环保科技有限公司 | Hydrogen peroxide-based flue-gas desulfurizing and denitrifying system and method |
| CN103463978A (en) * | 2013-09-30 | 2013-12-25 | 南京理工大学 | Device and method for smoke simultaneous desulfurization and denitrification based on hydrogen peroxide catalytic oxidation |
| CN107042062A (en) * | 2017-01-19 | 2017-08-15 | 四川京典能源科技有限公司 | Gas sweetening method of denitration |
-
2011
- 2011-08-09 CN CN2011202871988U patent/CN202237743U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327735A (en) * | 2011-08-09 | 2012-01-25 | 中悦浦利莱环保科技有限公司 | Hydrogen peroxide-based flue-gas desulfurizing and denitrifying system and method |
| CN103463978A (en) * | 2013-09-30 | 2013-12-25 | 南京理工大学 | Device and method for smoke simultaneous desulfurization and denitrification based on hydrogen peroxide catalytic oxidation |
| CN103463978B (en) * | 2013-09-30 | 2016-03-02 | 南京理工大学 | Based on the device and method of catalytic oxidation of hydrogen peroxide flue gas and desulfurizing and denitrifying |
| CN107042062A (en) * | 2017-01-19 | 2017-08-15 | 四川京典能源科技有限公司 | Gas sweetening method of denitration |
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