CN111514712A - Novel method for denitration of flue gas by cooperation of anode and cathode electrocatalysis - Google Patents
Novel method for denitration of flue gas by cooperation of anode and cathode electrocatalysis Download PDFInfo
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- CN111514712A CN111514712A CN202010370894.9A CN202010370894A CN111514712A CN 111514712 A CN111514712 A CN 111514712A CN 202010370894 A CN202010370894 A CN 202010370894A CN 111514712 A CN111514712 A CN 111514712A
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000003546 flue gas Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 32
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 238000010531 catalytic reduction reaction Methods 0.000 claims abstract description 7
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000003647 oxidation Effects 0.000 claims abstract description 7
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 5
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 5
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims abstract description 4
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 16
- 239000003792 electrolyte Substances 0.000 claims description 10
- 238000005276 aerator Methods 0.000 claims description 9
- 239000011780 sodium chloride Substances 0.000 claims description 8
- 238000005273 aeration Methods 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- 238000006722 reduction reaction Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- XOLBLPGZBRYERU-UHFFFAOYSA-N SnO2 Inorganic materials O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910000464 lead oxide Inorganic materials 0.000 claims description 3
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- 239000008346 aqueous phase Substances 0.000 claims description 2
- 238000006555 catalytic reaction Methods 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- CJTCBBYSPFAVFL-UHFFFAOYSA-N iridium ruthenium Chemical group [Ru].[Ir] CJTCBBYSPFAVFL-UHFFFAOYSA-N 0.000 claims description 2
- 229910000510 noble metal Inorganic materials 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 4
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- -1 hydroxyl free radical Chemical class 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(IV) oxide Inorganic materials O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- 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
- B01D53/32—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 by electrical effects other than those provided for in group B01D61/00
- B01D53/326—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 by electrical effects other than those provided for in group B01D61/00 in electrochemical cells
-
- 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
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a novel anode-cathode electrocatalysis synergistic flue gas denitration method, and belongs to the technical field of atmospheric treatment. The method of the invention utilizes the active matter produced by anodic oxidation to oxidize NO in the flue gas into high valence NOx which is easy to be dissolved in water, the NOx absorbed by water phase is converted into nitrite and nitrate, meanwhile, the dissolved nitrate nitrogen can be converted into nitrogen or ammonium radical on the cathode through catalytic reduction, and the produced ammonium radical can be finally oxidized into nitrogen by hypochlorous acid produced by anodic electrolysis. According to the system, the solution is lifted to the top of the reaction device by using the lifting pump, and spray is formed by the spraying device, so that the contact time and the contact area of NO and the solution are further increased, and the treatment efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of atmospheric treatment, and particularly relates to a novel method for denitration of flue gas by cooperation of anode and cathode electrocatalysis.
Background
The energy structure of China is mainly coal, smoke generated in the combustion process of the coal contains a large amount of NOx, 90-95% of the NOx is insoluble NO, and a series of environmental problems such as ozone layer cavities, photochemical smog, acid rain, haze and the like can be caused. Therefore, in recent years, flue gas desulfurization and denitration are strategic points in the field of energy and environment in China, and especially have important environmental and social significance for treating haze pollution which is currently concerned.
The control technology of NOx starts relatively late, and at present, there are two main types: one is to reduce the NOx emission concentration to some extent by using low NOx combustion techniques, such as air staged combustion techniques. However, as the environmental protection requirements become stricter, the environmental protection requirements cannot be met by singly adopting the technology; the other method is to remove NOx from the combusted flue gas, and the main methods comprise dry flue gas denitration and wet flue gas denitration. At present, the dry flue gas denitration for large-scale commercial application mainly comprises the following steps: selective Catalytic Reduction (SCR) and selective non-catalytic reduction (SNCR). SCR denitration principle: under the action of certain temperature and catalyst, with NH3、CO、H2Etc. as reducing agent, which can selectively react with NOx in the flue gas to reduce the NOx into pollution-free N2And H2And O. The method has the main advantages of high denitration efficiency, low reaction temperature and no secondary pollution to the environment caused by the product. On the other hand, the SCR method has the disadvantages of easy catalyst deactivation, narrow operating temperature range, ammonia slip, high investment cost, and the like. In SNCR, urea or ammonia compounds as reducing agents convert NOx to non-polluting N2. The denitration process of the selective non-catalytic reduction method is finished in a boiler combustion chamber, and due to the high-temperature environment, the method does not need a catalyst, does not need to reform a flue, has low investment and does not influence a unitAnd (5) operating. But the denitration efficiency is low, the operation temperature is high, and ammonia is easy to leak. The wet flue gas denitration technology mainly utilizes acid or alkali and other oxidants to remove NOxThe nitrogen oxides are removed by oxidation and absorption. The common methods are as follows: nitric acid absorption, complex absorption, oxidation absorption, lye absorption, acid absorption, and the like. The wet flue gas denitration technology has the advantages of simple equipment and flow, easy operation, labor cost saving and the like, but the problems of absorption liquid regeneration and denitration efficiency reduction after regeneration of the method are difficult problems of the technology. Strong NOx oxidizers, represented by ozone, potassium permanganate, hydrogen peroxide, and hypochlorous acid, are limited in their application because of the large reagent consumption and the increased subsequent treatment of the waste stream.
Disclosure of Invention
According to the defects of the prior art, the invention aims to provide the method for denitration of the flue gas by cooperation of the electrocatalysis of the anode and the cathode, the method is operated at normal temperature and normal pressure, is easy to operate, can be applied to the treatment of NOx at normal temperature and low concentration, has high denitration efficiency, does not add chemical reagents in the process, does not have secondary pollution, and has low cost, low consumption and high safety performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a novel method of flue gas denitration is in coordination with positive and negative electrode electro-catalysis, set up the negative and positive electrode in the reactor, use NaCl solution as the electrolyte, treat the flue gas of denitration through micropore aeration device, from the entering solution of reactor bottom, strong oxidizing nature hydroxyl free radical and active chlorine that anodic oxidation produced oxidize the NOx in the flue gas into the NOx of the high valence state of easily dissolving in the water, NOx by aqueous phase absorption turns into nitrite and nitrate, dissolved nitrate nitrogen can be turned into nitrogen gas or ammonium through catalytic reduction on the negative pole simultaneously, the ammonium radical that produces can finally be oxidized into nitrogen gas by the hypochlorous acid that anode electrolysis generated, accomplish electrocatalysis denitration reaction with this.
On the basis of the scheme, the working current density in the electrocatalytic denitration reaction is 1-50mA/cm2(ii) a The input voltage waveform is direct current or pulse.
On the basis of the scheme, the sun isThe electrode is ruthenium iridium electrode, lead oxide, Sb-SnO2One kind of (1).
On the basis of the scheme, the cathode is a nitrate-nitrogen reduction catalyst, and preferably, the cathode is one of noble metal or cheap metal and oxide thereof; more preferably, the cathode is one of Pd, P, copper, indium, cobalt or an oxide thereof.
On the basis of the scheme, the electrode distance between the anode and the cathode is 1-10 cm.
On the basis of the scheme, the concentration of the NaCl solution is 0.001-1.0M.
On the basis of the scheme, the microporous aeration device is one of a diaphragm type microporous aerator, a tubular aerator, a disc type aerator and a microporous ceramic aerator.
On the basis of the scheme, the top of the reactor is also provided with a spraying device, and part of electrolyte is lifted to the spraying device through a lifting pump to form spray and absorb and degrade part of overflowed NO.
The principle of the technical scheme of the invention is as follows: NO enters the solution from the inlet hose 9 at the bottom of the reactor through the micropore aeration of the micropore aeration disc 12. NaCl solution as electrolyte, Cl-Will oxidize at the anode 10 to generate Cl radicals and ClO-The NO in the flue gas is oxidized into high-valence NOx which is easily dissolved in a water body by utilizing anodic oxidation, the NOx absorbed by a water phase is converted into nitrite and nitrate, meanwhile, the dissolved nitrate nitrogen can be converted into nitrogen or ammonium radical on a cathode 7 through catalytic reduction, and the generated ammonium radical can be finally oxidized into nitrogen by hypochlorous acid generated by anodic electrolysis and overflows from a gas outlet 2 at the top of the device. The system utilizes the lift pump to lift the solution to the top of the reaction device, and spray is formed by the spray nozzle 3 of the spray device, so that the contact time and the contact area of NO and the solution are further increased, and the treatment efficiency is improved. The chemical (ionic) equation for the reaction is:
NO+HClO→NO2+HCl 3NO2+H2O→2HNO3+NO
NO2+H2O→HNO3+HNO2HNO2+HClO→HNO3+HCl
NO3 -+2e-+2H+→NO2 -+3H2O NO2 -+6e-+8H+→NH4 ++2H2O
2NO2 -+10e-+12H+→N2+6H2O 2NH4 ++3HOCl→N2+3H2O+3Cl-+5H+
the invention has the advantages that:
(1) by using the synergistic treatment of anodic oxidation and cathodic reduction on NOx, NOx (mainly NO) is converted into nontoxic and harmless N2Simple and convenient, and high pin removal efficiency.
(2) The technology operates at normal temperature and normal pressure, can be applied to the treatment of NOx at normal temperature and low concentration, and has the advantages of no addition of chemical reagents, no secondary pollution, low cost, low consumption and high safety performance in the process.
Drawings
FIG. 1 is a schematic view of a denitration reactor according to the present invention, wherein: 1-outlet hose, 2-gas outlet, 3-spray nozzle, 4-flange, 5-circulation hose, 6-cathode electric connection port, 7-cylinder cathode, 8-circulation water opening, 9-inlet hose, 10-anode, 11-anode electric connection port and 12-microporous aeration disc.
Detailed Description
Terms used in the present invention have generally meanings as commonly understood by one of ordinary skill in the art, unless otherwise specified.
The present invention will be described in further detail with reference to the following data, with reference to specific examples. The following examples are intended to illustrate the invention and are not intended to limit the scope of the invention in any way.
Example 1
By using Ti/IrO2-RuO2Is an anode, metal copper is a cathode, and the distance between the electrodes is 5 cm. 0.05M NaCl was used as electrolyte and the initial pH was adjusted to 7. The NO concentration is 500ppm, and the solution enters the membrane type microporous aerator at the flow rate of 1L/minIn (1). The electrolyte is sprayed from a spraying device at the top by a lift pump, and part of the gas overflowing from the solution is brought back into the solution again. The treated gas overflows from the top of the reactor and is introduced into a gas cylinder, and the concentration of the treated gas is measured by using a flue gas analyzer to monitor the treatment degree of NOx in real time.
The working current density is 20mA/cm2At this time, the NO conversion was 90%.
Example 2
The lead oxide electrode is used as an anode, the metal Pd coating is used as a cathode, and the electrode distance is 5 cm. 0.07M NaCl was used as the electrolyte and the initial pH was adjusted to 7. The NO concentration was 500ppm and the solution was passed through a membrane microaeration chamber at a flow rate of 1.2L/min. The electrolyte is sprayed from a spraying device at the top by a lift pump, and part of the gas overflowing from the solution is brought back into the solution again. The treated gas overflows from the top of the reactor and is introduced into a gas cylinder, and the concentration of the treated gas is measured by using a flue gas analyzer to monitor the treatment degree of NOx in real time.
The working current density is 25mA/cm2At this time, the NO conversion was 92%.
Example 3
By using Sb-SnO2The electrode is an anode, the metal cobalt is a cathode, and the distance between the electrodes is 6 cm. 0.08M NaCl was used as electrolyte and the initial pH was adjusted to 7. The NO concentration was 500ppm and the solution was passed through a membrane microaeration chamber at a flow rate of 1.3L/min. A spraying device is not adopted, the treated gas overflows from the top of the reactor and is introduced into a gas cylinder, a flue gas analyzer is used for measuring the concentration of the treated gas, and the treatment degree of NOx is monitored in real time.
The working current density is 30mA/cm2At this time, the NO conversion was 80%.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a novel method of flue gas denitration of positive and negative electrode electro-catalysis synergism, a serial communication port, set up the negative and positive electrode in the reactor, use NaCl solution as the electrolyte, the flue gas of treating the denitration is through micropore aeration device, from the entering solution of reactor bottom, strong oxidizing property hydroxyl radical and the active chlorine that anodic oxidation produced oxidize the NO in the flue gas into the NOx of the high valence state of easily dissolving in the water, NOx that is absorbed by the aqueous phase turns into nitrite and nitrate, dissolved nitrate nitrogen can be turned into nitrogen gas or ammonium radical through catalytic reduction on the negative pole simultaneously, the ammonium radical that produces can finally be oxidized into nitrogen gas by the hypochloric acid that anode electrolysis generated, accomplish electrocatalysis denitration reaction with this.
2. The novel method for denitration of flue gas by cooperation of anode-cathode electrocatalysis and anode-cathode electrocatalysis according to claim 1, wherein the working current density in the electrocatalysis denitration reaction is 1-50mA/cm2(ii) a The input voltage waveform is direct current or pulse.
3. The novel method for denitration of flue gas by cooperation of anode-cathode electrocatalysis and flue gas denitration, as claimed in claim 1, wherein the anode is ruthenium-iridium electrode, lead oxide, Sb-SnO2One kind of (1).
4. The novel method for denitration of flue gas by electrocatalysis and synergy of cathode and anode according to claim 1, wherein the cathode is a nitrate nitrogen reduction catalyst.
5. The novel method for denitration of flue gas by cooperation of electrocatalysis of cathode and anode according to claim 4, wherein the cathode is one of noble metal or cheap metal and oxide thereof.
6. The novel method for denitration of flue gas by electrocatalysis of cathode and anode in coordination with flue gas denitration of claim 5, wherein the cathode is one of Pd, P, copper, indium, cobalt or oxides thereof.
7. The novel method for denitration of flue gas by cooperation of anode and cathode electrocatalysis according to claim 1, wherein the electrode distance between the anode and the cathode is 1-10 cm.
8. The novel method for denitration of flue gas by cooperation of electrocatalysis of the anode and the cathode and the method of claim 1, wherein the concentration of the NaCl solution is 0.001-1.0M.
9. The novel method for denitration of flue gas by cooperation of anode-cathode electrocatalysis and anode-cathode electrocatalysis as claimed in claim 1, wherein the microporous aeration device is one of a diaphragm type microporous aerator, a tube type aerator, a disc type aerator and a microporous ceramic aerator.
10. The novel method for denitration of flue gas through cooperation of anode-cathode electrocatalysis and flue gas denitrification as claimed in any one of claims 1 to 9, wherein a spraying device is further arranged at the top of the reactor, and a part of electrolyte is lifted to the spraying device through a lifting pump to form spraying, absorb and degrade part of overflowed NO.
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CN114345127A (en) * | 2021-12-31 | 2022-04-15 | 中国海洋大学 | Ship flue gas electrocatalytic reduction denitration method |
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CN115779910A (en) * | 2022-11-30 | 2023-03-14 | 华北电力大学(保定) | Preparation of cobalt-based perovskite catalyst and thermal catalytic denitration method thereof |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1600699A (en) * | 2004-09-29 | 2005-03-30 | 浙江大学 | Equipment and method for treating organic waste water through electrocatalysis of cathode in combination with anode |
CN101077469A (en) * | 2006-05-24 | 2007-11-28 | 黄立维 | Method for removing harmful gas from air current |
CN104163479A (en) * | 2014-08-25 | 2014-11-26 | 上海理工大学 | Method and device for removing nitrate nitrogen in water by using three-dimensional electrodes |
CN104817142A (en) * | 2015-04-24 | 2015-08-05 | 青岛双瑞海洋环境工程股份有限公司 | Electrochemical method and device for removing nitrate in wastewater |
CN105536532A (en) * | 2016-02-26 | 2016-05-04 | 中国电力工程顾问集团东北电力设计院有限公司 | Electrically-catalytic low-temperature wet method full-load denitration system |
WO2017030249A1 (en) * | 2015-08-18 | 2017-02-23 | 한국과학기술원 | Electrolysis apparatus for collecting nitrogen compound using ferric-ethylenediamine tetraacetic acid |
CN107970768A (en) * | 2017-11-20 | 2018-05-01 | 南开大学 | A kind of gas-diffusion electrode and preparation method thereof and NOxReforming unit |
CN108423772A (en) * | 2018-04-18 | 2018-08-21 | 南京大学 | A kind of device and method based on negative and positive the two poles of the earth Synergistic degradation nitrate that Zero-valent iron-carrying nano compound resin is catalyst |
CN109966917A (en) * | 2019-04-22 | 2019-07-05 | 华能国际电力股份有限公司 | Electricity-saving type flue gas NO electrocatalytic oxidation system and method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014177894A (en) * | 2013-03-14 | 2014-09-25 | Toyota Central R&D Labs Inc | Exhaust gas purifying system and exhaust gas purifying method |
CN107469597B (en) * | 2017-09-21 | 2024-04-02 | 马加德 | Electrochemical-based waste gas and waste water coupling purification system and purification method thereof |
CN108163934A (en) * | 2018-02-27 | 2018-06-15 | 湖北君集水处理有限公司 | A kind of system and method that electrolysis nitrogen is carried out using rhodium electrode |
CN108211687A (en) * | 2018-03-08 | 2018-06-29 | 武汉光谷环保科技股份有限公司 | Wet flue gas oxidation sweetening denitration demercuration technique based on electrode catalyst oxidant |
CN109772165B (en) * | 2018-12-14 | 2021-09-14 | 深圳大学 | Tail gas purification reactor, preparation method thereof and tail gas purification reactor |
-
2020
- 2020-05-06 CN CN202010370894.9A patent/CN111514712B/en active Active
- 2020-05-12 WO PCT/CN2020/089711 patent/WO2021223249A1/en active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1600699A (en) * | 2004-09-29 | 2005-03-30 | 浙江大学 | Equipment and method for treating organic waste water through electrocatalysis of cathode in combination with anode |
CN101077469A (en) * | 2006-05-24 | 2007-11-28 | 黄立维 | Method for removing harmful gas from air current |
CN104163479A (en) * | 2014-08-25 | 2014-11-26 | 上海理工大学 | Method and device for removing nitrate nitrogen in water by using three-dimensional electrodes |
CN104817142A (en) * | 2015-04-24 | 2015-08-05 | 青岛双瑞海洋环境工程股份有限公司 | Electrochemical method and device for removing nitrate in wastewater |
WO2017030249A1 (en) * | 2015-08-18 | 2017-02-23 | 한국과학기술원 | Electrolysis apparatus for collecting nitrogen compound using ferric-ethylenediamine tetraacetic acid |
CN105536532A (en) * | 2016-02-26 | 2016-05-04 | 中国电力工程顾问集团东北电力设计院有限公司 | Electrically-catalytic low-temperature wet method full-load denitration system |
CN107970768A (en) * | 2017-11-20 | 2018-05-01 | 南开大学 | A kind of gas-diffusion electrode and preparation method thereof and NOxReforming unit |
CN108423772A (en) * | 2018-04-18 | 2018-08-21 | 南京大学 | A kind of device and method based on negative and positive the two poles of the earth Synergistic degradation nitrate that Zero-valent iron-carrying nano compound resin is catalyst |
CN109966917A (en) * | 2019-04-22 | 2019-07-05 | 华能国际电力股份有限公司 | Electricity-saving type flue gas NO electrocatalytic oxidation system and method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114345127A (en) * | 2021-12-31 | 2022-04-15 | 中国海洋大学 | Ship flue gas electrocatalytic reduction denitration method |
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