CN105169906A - Method for injecting sodium sulfide into ozone to denitrate - Google Patents
Method for injecting sodium sulfide into ozone to denitrate Download PDFInfo
- Publication number
- CN105169906A CN105169906A CN201510592521.5A CN201510592521A CN105169906A CN 105169906 A CN105169906 A CN 105169906A CN 201510592521 A CN201510592521 A CN 201510592521A CN 105169906 A CN105169906 A CN 105169906A
- Authority
- CN
- China
- Prior art keywords
- ozone
- gas
- sodium sulfide
- sodium
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910052979 sodium sulfide Inorganic materials 0.000 title claims abstract description 13
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 108
- 239000007789 gas Substances 0.000 claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims abstract description 12
- 239000003546 flue gas Substances 0.000 claims description 24
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 23
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000007254 oxidation reaction Methods 0.000 claims description 17
- 230000003647 oxidation Effects 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000011734 sodium Substances 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- 239000002912 waste gas Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract description 4
- 235000011152 sodium sulphate Nutrition 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 abstract 2
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 13
- 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 7
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005200 wet scrubbing Methods 0.000 description 2
- 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 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 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
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention discloses a method for injecting sodium sulfide into ozone to denitrate, belonging to the technical field of smoke purification. According to the method, nitric oxide (NOx) in smoke is oxidized by the ozone; NO is oxidized into NO2 by the ozone and the oxidized gas is absorbed by a sodium sulfide solution; the pH value of an absorption process is controlled by the sodium sulfide solution and nitric oxide is converted into harmless nitrogen gas to be discharged out; and sodium sulfide is converted into sodium sulfate. According to the method, has a simple the process is simple, the operation is easy, the denitration efficiency is high and the industrial application prospect is relatively good.
Description
Technical field
The present invention relates to a kind of ozone and inject sodium sulfide method method of denitration, belong to flue gases purification field.
Background technology
The burning of fossil fuel creates a large amount of nitrogen oxide and sulfur dioxide, has impelled the development of flue gas desulfurization and denitrification technology.Some wet scrubbings comprise limestone-gypsum method, magnesium oxide method, and two neutralizing treatment method has been applied to removing of sulfur dioxide.Nitrogen oxide is mainly through catalytic oxidation, the method absorbed and adsorb controls, wherein SCR technology is considered to the most effective denitration technology, although strict standard limit of smog release can be met, but its technology and equipment system complex, and needing special catalyst, whole system investment is higher with operating cost.The patent of invention of publication number ZL200710052129.7 " wet ammonia flue gas cleaning technology of simultaneous SO_2 and NO removal and system thereof " proposes to make the nitric oxide in flue gas carry out oxidation and generates nitrogen dioxide, then ammonia spirit is passed into, reaction generates ammonium sulfite, ammonium nitrate and ammonium nilrite, demist is carried out to the flue gas after desulphurization denitration simultaneously, finally obtain clean flue gas.The not high problem of denitration efficiency is deposited in this invention; ZL201420574429.7 " a kind of SNCR denitration jet control system " proposes a kind of denitration purifying device: comprise several denitrification reducing agent spray site, be arranged in several injection apparatus of spray site, and the denitrification reducing agent distribution system to be communicated with injection apparatus, denitrification reducing agent distribution system distributes branch road by several and forms, and each distributes branch road and is separately connected with the some injection apparatus covering each spray site completely.There is the problem of complicated operation in this invention.In order to go to overcome these problems, have a lot of trial, as lower temperature plasma technology, electron beam irradiation technology and adsorption technology are used to simultaneous SO_2 and NO removal, but seldom have the report of industrial applications.
Nitrogen oxide is primarily of nitrogen dioxide (NO
2) and nitric oxide (NO) composition, wherein nitric oxide accounts for most of ratio, unlike nitric oxide production low-solubility, nitrogen dioxide has good dissolubility, therefore, be nitrogen dioxide by conversion of nitric oxide gas, just can remove nitrogen oxide by wet scrubbing technology.Optimal mode is converted into harmless nitrogen after wet absorption nitrogen oxide to discharge.Vulcanized sodium can be used for absorbing nitrogen dioxide, is then converted into nitrogen and sodium sulphate.In order to more be conducive to removing of nitrogen oxide, the nitric oxide first in waste gas should be converted into nitrogen dioxide.
Summary of the invention
The object of this invention is to provide a kind of ozone and inject sodium sulfide method method of denitration, specifically comprise the following steps:
(1) industrial furnace flue gas is after dedusting, water-washing pre-treatment, and flue-gas temperature is cooled to less than 45 DEG C;
(2) by the waste gas containing nitrogen oxide and ozone oxidation 2 ~ 3 seconds, NO is converted into NO
2;
(3) it is in the sodium sulfide solution of 10% ~ 30% that the waste gas after ozone oxidation passes into mass percent concentration, gas after absorption cleaning is discharged, when the pH value of absorbing liquid is 11 ~ 12, to add mass percent concentration be 10% ~ 20% sodium hydroxide solution adjust ph continues reaction to 13 ~ 14, has reacted after the pH value of solution is lower than 10.
Preferably, the mole that ozone passes into is 1 ~ 1.5 times of nitric oxide mole in flue gas.
Preferably, between waste gas and absorbing liquid, time of contact is between 0.5 ~ 1.5s.
When absorption reaction starts, the pH value of solution is about 13, nitrogen dioxide and vulcanized sodium react and generate nitrogen and sodium sulphate, carrying out pH and can reduce along with reaction, when pH value lower than 11 time can produce hydrogen sulfide and nitric oxide gas gradually, after adding sodium hydroxide solution adjustment pH to 13 ~ 14, hydrogen sulfide gas and nitric oxide production generation can be suppressed, reacted after pH value is lower than 10.
Inventive principle:
(1) ozone oxidation reaction is
NO+O
3→NO
2+O
2
(2) pH value 11 and above time solution in the main reaction occurred be
NO
2+Na
2S→Na
2SO
4+N
2
(3) pH value is lower than 11, and solution is still for the reaction occurred during alkalescence is
NO
2+H
2O→HNO
2+HNO
3
HNO
2→H
++NO
2 -
HNO
3→H
++NO
3 -
NO+NO
2+2NaOH→2NaNO
2
Vulcanized sodium and acid ion react and generate H
2s
Na
2S+H
+→H
2S+Na
+
Nitric acid and vulcanized sodium can react and produce sulphur and NO
3Na
2S+8HNO
3→6NaNO
3+3S+2NO+4H
2O
Beneficial effect of the present invention:
NO, with ozone oxidation nitrogen oxide (NOx), is converted into NO by the inventive method
2, sodium sulfide solution is absorbent, absorption cleaning nitrogen oxide, and nitrogen oxide is converted into nitrogen and discharges, and vulcanized sodium is converted into sodium sulphate; Present invention process is simple, and easy to operate, to energy-saving and emission-reduction, environmental protection, the technology such as comprehensive utilization of resources are all important breakthroughs.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Detailed description of the invention
Below by embodiment, the present invention is described in further detail, but scope is not limited to described content.
The embodiment of the present invention 1 ~ 3 passes through ozonizer generates ozone and injection of ozone room, regulates the voltage of ozone generator to control the generation of ozone.
Embodiment 1
NO in flue gas
xthe method of absorption cleaning, particular content is as follows:
(1) pending in the present embodiment flue gas is laboratory simulation gas, and gas flow is 500mL/min, NO:300mg/m
3, NO
2: 20mg/m
3, under room temperature condition, gas enters ozone oxidation room, stops 2s and carries out oxidation reaction.
(2) gas after ozone (mole that ozone passes into is 1 times of nitric oxide mole in flue gas) oxidation is mainly NO
2with the not oxidized NO of minute quantity, pass into the sodium sulfide solution that mass percent concentration is 10%, initial pH value is 13, and the gas after absorption cleaning is discharged; When pH value reaches 12, add the sodium hydroxide solution that mass percent concentration is 10%, adjust ph continues reaction to 13, has reacted after pH value is lower than 10.
By implementing said method, denitration efficiency>=95%, NO in exiting flue gas
xcontent≤10mg/m
3.
Embodiment 2
NO in flue gas
xthe method of absorption cleaning, particular content is as follows:
(1) pending in the present embodiment flue gas is laboratory simulation gas, and gas flow is 400mL/min, NO:500mg/m
3, NO
2: 40mg/m
3, under room temperature condition, gas enters ozone oxidation room, stops 2.5s and carries out oxidation reaction.
(2) gas after ozone (mole that ozone passes into is 1.2 times of nitric oxide mole in flue gas) oxidation is mainly NO
2with the not oxidized NO of minute quantity, pass into the sodium sulfide solution that mass percent concentration is 16%, initial pH value is 13, and the gas after absorption cleaning is discharged; When pH value reaches 11, add the NaOH continuation reaction that mass percent concentration is 15%, adjust ph continues reaction to 14, has reacted after pH value is lower than 10.
By implementing said method, denitration efficiency>=95%, NO in exiting flue gas
xcontent≤15mg/m
3.
Embodiment 3
NO in flue gas
xthe method of absorption cleaning, particular content is as follows:
(1) pending in the present embodiment flue gas is laboratory simulation gas, and gas flow is 600mL/min, NO:700mg/m
3, NO
2: 50mg/m
3, under room temperature condition, gas enters ozone oxidation room, stops 3s and carries out oxidation reaction.
(2) gas after ozone (mole that ozone passes into is 1.5 times of nitric oxide mole in flue gas) oxidation is mainly NO
2with the not oxidized NO of minute quantity, pass into the sodium sulfide solution that mass percent concentration is 25%, initial pH value is 13, and the gas after absorption cleaning is discharged; When pH value reaches 12, add 20% sodium hydroxide solution, adjust ph continues reaction to 13, and adjust ph continues reaction to 13.5, has reacted after pH value is lower than 10.
By implementing said method, denitration efficiency>=95%, NO in exiting flue gas
xcontent≤25mg/m
3.
Claims (2)
1. ozone injects a method for vulcanized sodium denitration, it is characterized in that, specifically comprises the following steps:
(1) industrial furnace flue gas is after dedusting, water-washing pre-treatment, and flue-gas temperature is cooled to less than 45 DEG C;
(2) by the waste gas containing nitrogen oxide and ozone oxidation 2 ~ 3 seconds, NO is converted into NO
2;
(3) it is in the sodium sulfide solution of 10% ~ 30% that the waste gas after ozone oxidation passes into mass percent concentration, gas after absorption cleaning is discharged, when absorbing liquid pH value lower than 11 ~ 12 time, to add mass percent concentration be 10% ~ 20% sodium hydroxide solution adjust ph continues reaction to 13 ~ 14, has reacted after the pH value of solution is lower than 10.
2. ozone according to claim 1 injects the method for vulcanized sodium denitration, it is characterized in that: the mole that ozone passes into is 1 ~ 1.5 times of nitric oxide mole in flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510592521.5A CN105169906A (en) | 2015-09-17 | 2015-09-17 | Method for injecting sodium sulfide into ozone to denitrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510592521.5A CN105169906A (en) | 2015-09-17 | 2015-09-17 | Method for injecting sodium sulfide into ozone to denitrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105169906A true CN105169906A (en) | 2015-12-23 |
Family
ID=54892621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510592521.5A Pending CN105169906A (en) | 2015-09-17 | 2015-09-17 | Method for injecting sodium sulfide into ozone to denitrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105169906A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939550A (en) * | 2017-12-21 | 2019-06-28 | 中国石油化工股份有限公司 | A kind of processing method and processing device of FCC regenerated flue gas |
| CN111992018A (en) * | 2020-08-21 | 2020-11-27 | 福建华威钜全精工科技有限公司 | Yellow tobacco treatment easy preparation and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0365566B1 (en) * | 1987-07-09 | 1991-09-11 | Friedrich Dipl.-Ing. Curtius | Process for removing oxides of nitrogen from flue gases |
| CN1768902A (en) * | 2005-10-14 | 2006-05-10 | 浙江大学 | Ozone oxidation and denitration method of boiler flue gas |
| CN101279185A (en) * | 2007-12-29 | 2008-10-08 | 浙江工业大学 | Gas phase oxidation-liquid phase reduction method for absorbing and removing nitrous oxides in exhaust air |
| CN101406803A (en) * | 2008-10-28 | 2009-04-15 | 浙江大学 | Ultrasonic wave denitration method for flue gas |
| CN101879404A (en) * | 2010-07-12 | 2010-11-10 | 华东理工大学 | Recycled flue gas desulfurization and denitration method |
| CN103894051A (en) * | 2012-12-28 | 2014-07-02 | 新煤化工设计院（上海）有限公司 | Wet-type smoke desulphurization and denitrification integrated system and method |
-
2015
- 2015-09-17 CN CN201510592521.5A patent/CN105169906A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0365566B1 (en) * | 1987-07-09 | 1991-09-11 | Friedrich Dipl.-Ing. Curtius | Process for removing oxides of nitrogen from flue gases |
| CN1768902A (en) * | 2005-10-14 | 2006-05-10 | 浙江大学 | Ozone oxidation and denitration method of boiler flue gas |
| CN101279185A (en) * | 2007-12-29 | 2008-10-08 | 浙江工业大学 | Gas phase oxidation-liquid phase reduction method for absorbing and removing nitrous oxides in exhaust air |
| CN101406803A (en) * | 2008-10-28 | 2009-04-15 | 浙江大学 | Ultrasonic wave denitration method for flue gas |
| CN101879404A (en) * | 2010-07-12 | 2010-11-10 | 华东理工大学 | Recycled flue gas desulfurization and denitration method |
| CN103894051A (en) * | 2012-12-28 | 2014-07-02 | 新煤化工设计院（上海）有限公司 | Wet-type smoke desulphurization and denitrification integrated system and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939550A (en) * | 2017-12-21 | 2019-06-28 | 中国石油化工股份有限公司 | A kind of processing method and processing device of FCC regenerated flue gas |
| CN109939550B (en) * | 2017-12-21 | 2021-04-06 | 中国石油化工股份有限公司 | Method and device for treating FCC (fluid catalytic cracking) regenerated flue gas |
| CN111992018A (en) * | 2020-08-21 | 2020-11-27 | 福建华威钜全精工科技有限公司 | Yellow tobacco treatment easy preparation and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Chen et al. | Recent advances in simultaneous removal of SO2 and NOx from exhaust gases: Removal process, mechanism and kinetics | |
| CN102343212B (en) | Denitration process combining co-oxidation of ozone and hydrogen peroxide with wet absorption | |
| CN101352646B (en) | Flue gas denitration method using ultraviolet light double action | |
| CN102908883B (en) | A kind of flue gas and desulfurizing and denitrifying method | |
| CN103861439A (en) | Method for simultaneously desulfurizing, denitrating and purifying flue gas | |
| CN1923341A (en) | Device and method for coal-burning boiler fume ozone oxidation and simultaneous desulfurization and denitrification | |
| CN101632897B (en) | Method for simultaneously removing sulfur oxides and nitric oxides in flue gas | |
| CN106853327B (en) | Low-temperature flue gas desulfurization and denitrification integrated method and device | |
| CN102847418B (en) | A kind of wet desulfurization of flue gas by limestone-gypsum method denitration additive | |
| CN106000037A (en) | System and method for removing acid gas in smoke and assisting in desulfurization and denitrification | |
| CN103170228B (en) | A kind of denitrating flue gas mixed solution and application process thereof | |
| CN104524935B (en) | Single tower type double-cycle spray composite absorption device and method | |
| CN102764574A (en) | Desulfurization and denitrification method for streamer discharge plasma free radical injected flue gas | |
| CN102989282A (en) | Method and device for collaborative removal of mercury in flue gas | |
| CN102764573A (en) | Streamer corona plasma flue gas denitrification method | |
| CN104941410A (en) | Flue gas desulfurization and denitrification integrated method and device based on two-step oxidation process of active molecules O3 at low temperature | |
| CN104801160A (en) | Method for reducing nitrogen oxides in flue gas of medium and small sized industrial coal burning boiler through combination with wet-method sulfur removing technology | |
| CN106955589A (en) | A kind of boiler smoke simultaneous SO_2 and NO removal device | |
| CN105194991A (en) | Glass furnace flue gas desulfurization and denitrification system and process | |
| CN203123795U (en) | Flue gas denitration device using ozone oxidation method | |
| CN105289228A (en) | Synergistic desulfurization and denitrification method of industrial flue gas | |
| CN103100294A (en) | Method for removing oxynitride from flue gas through ozone oxidation method | |
| CN102371110B (en) | Flue gas desulfurization and denitration method | |
| CN204247052U (en) | Single tower type double-cycle spray composite absorption device | |
| CN102188889A (en) | Device and method for combined removal of sulphur dioxide (SO2), nitrogen oxide (NOX) and mercury from fume |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |