CN204816190U - Indisputable carbon electrolysis flue gas denitration device is reinforceed to extra electric field - Google Patents
Indisputable carbon electrolysis flue gas denitration device is reinforceed to extra electric field Download PDFInfo
- Publication number
- CN204816190U CN204816190U CN201520482860.3U CN201520482860U CN204816190U CN 204816190 U CN204816190 U CN 204816190U CN 201520482860 U CN201520482860 U CN 201520482860U CN 204816190 U CN204816190 U CN 204816190U
- Authority
- CN
- China
- Prior art keywords
- plate group
- electric field
- carbon
- reaction vessel
- extra electric
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses an indisputable carbon electrolysis flue gas denitration device is reinforceed to extra electric field, it is including the reaction vessel who contains reaction liquid, the structural feature is that reaction vessel's middle part is equipped with iron plate group and carbon plate group in the submergence reaction liquid, the welded connection positive of iron plate group, the carbon plate welded connection of group power negative pole, the top of iron plate group and carbon plate group is equipped with the agitating unit in the submergence reaction liquid, reaction vessel's bottom is equipped with evenly distributed's aeration head, the waste gas that the aeration head will contain NOx lets in among the reaction vessel bottom reaction vessel from bottom to top. Simultaneously, burst size through ferrous ion in the extra electric field improvement system to the improvement in to the flue gas nitrogen oxide get rid of the effect. The utility model discloses a NOx iron plate and carbon (copper) board absorbs desorption waste gas under the NPT in to oxygen in the make full use of waste gas reduces the waste gas pollution control and treatment cost, improves NOx's clearance, realizes NOx's discharge to reach standard, can synchronous desulfurization, reach the SOx/NOx control integration, and simple process convenient operation, and the low -priced and source of raw and other materials is extensively, this method in to waste gas nitrogen oxide's desorption efficient, no accessory substance can not cause secondary pollution.
Description
Technical field
The utility model belongs to vent gas treatment field, is specifically related to a kind of method of exhaust gas denitration.The method is easy and simple to handle, and treatment effect is good, possesses certain referentiability to exploring industrial practical application condition further.
Background technology
Nitrogen oxide (NO
x) be one of noxious material in chemical industry, national defense industry, power industry and the emission gases such as boiler and internal combustion engine, being one of primary pollution source causing atmosphere pollution, is also directly cause haze sky, China various places, ozone layer destroying, air-polluting big factors.But domestic denitration technology is still immature, to NO
xthe improvement of pollution also relatively lag behind, corresponding denitration market development is temporarily slower.The development of Waste Gas De-nitrogen Technology is key subjects urgently to be resolved hurrily.For this reason, research and development has that treatment effect is good, the flue-gas denitrification new technology of investment and the advantage such as operating cost is low, non-secondary pollution is extremely urgent.
Usually said NO
xmainly comprise NO, NO
2, N
2o
5, N
2o, N
2o
3etc. several, wherein mainly NO and NO
2.More NO is discussed in current research
xremoving sulfuldioxide mainly contain catalytic reduction method, catalytic decomposition, low-temperature adsorption and liquid absorption method etc.These methods are mainly subject to that reaction speed is slow, reaction condition requirement is high, oxidation difficulty, adsorbent reactivation are difficult and the restriction of high in cost of production factor, there is certain problem in practical application in industry.Ferrous ion (Fe
2+) method is that some scholars compare of concern and remove NO in waste gas in recent years
xtechnology, what at present research was more is utilize ferrous sulfate (FeSO
4) Fe in solution
2+to NO
xin NO and NO
2carry out complexing and absorption.But there is following defect:
1, FeSO
4solution allocation difficulty, and carry out active ingredient Fe along with what react
2+consumption can cause solution ineffective gradually, changes solution more difficult realization and cost is very high, in addition, by the NO of complexing in the industrial production
xmay have the danger again discharged, therefore the method also has some limitations in actual applications; 2, traditional core-loss shape is mainly used in denitrogenation of waste water, and the iron filings wherein used and carbon granules easily harden inefficacy, and commercial Application has limitation.
Summary of the invention
In order to solve prior art ferrous ions (Fe
2+) technical problem that solwution method is not enough in the reaction, technical thought of the present utility model is comprehensive iron carbon electrolysis principle and FeSO
4solution is to NO in flue gas
xremove principle, to consider in traditional core-loss shape that iron filings and carbon granules easily harden inefficacy, commercial Application has the present situation of limitation, therefore selects iron plate and the electrolysis of carbon (copper) plate to generate Fe
2+solwution method carrys out intensive treatment NO
x, realize for NO in waste gas
xeffectively remove.
For achieving the above object, the utility model adopts following technical scheme, extra electric field strengthening iron carbon electrolysis flue gas denitrification apparatus, comprise the reaction vessel filling reactant liquor, its structural feature is that the middle part of reaction vessel is provided with iron plate group in submergence reactant liquor and carbon plate group, iron plate bond pads connects positive source, carbon plate bond pads connects power cathode, the top of iron plate group and carbon plate group is provided with the agitating device in submergence reactant liquor, the bottom of reaction vessel is provided with equally distributed aeration head, and aeration head will containing NO
xwaste gas pass into from bottom to top reactor from reaction container bottom.
Preferably, the reactant liquor in reaction vessel to be pH value be 3-5 dilution heat of sulfuric acid.
Preferably, carbon plate group is graphite carbon plate group.
Further improvement opportunity scheme, can also in two-plate group extra electric field, the current strength of extra electric field is 50-200mA, produces a large amount of active iron ion Fe
2+; Namely by the burst size of ferrous ion in extra electric field raising system, to improve the removal effect to nitrogen oxides in effluent, also can sulfur dioxide gas in simultaneous removing waste gas, reach synchronized desulfuring and denitrifying effect.
Preferably, the current strength of extra electric field is 50-100mA.
Preferably, described NO
xfor NO and NO
2mixture.
Improvement opportunity scheme, described carbon plate group can be replaced by copper coin group, and copper coin group is as inert electrode, carbon plate group can be substituted connect power cathode in reaction system, and the potential difference between copper and iron is comparatively larger between iron carbon, is more conducive to cell reaction, better effects if.
Sulfur dioxide in waste gas becomes the reactant liquor raw material in denitration, realizes desulphurization and denitration integration.
The beneficial effects of the utility model:
1, compare iron filings and carbon granules, iron plate and carbon plate easily change cleaning, operate more simple, are more suitable for industrial practical application.Electrolysis principle is utilized to make iron plate continuous stripping Fe in an acidic solution
2+ion, and extra electric field promotes Fe
2+the release of ion, makes can produce in a large number lastingly in reactant liquor to remove NO in flue gas
xmain component Fe
2+ion and mixing plant disturbance, make gas fully contact with reactant liquor, reaches the object of flue-gas denitrification.
Its reaction principle is as follows:
Anode (Fe): Fe-2e
- fe
2+, E
0=0.44V
Negative electrode (C): 2H
++ 2e
- 2 [H]
h
2 , E
0=(H
+/ H
2)=0.0V
Under acid condition, there is O
2when existing:
O
2+4H
++4e
- 2H
2O，E
0=1.23V
O
2+2H
++2e
- H
2O
2E
0=0.68V
From reaction equation, introduce extra electric field, reaction electrode current potential can be expanded further, thus discharge more high activity Fe
2+[H].Following a few class reaction can be there is in whole reaction system:
(1) redox
The Fe of nascent state produced in cell reaction
2+with nascent state [H], there is very high chemism, with the composition in flue gas, serial redox reaction can occur, thus its structure and characteristics is changed.In addition, under acid aerobic conditions, Inner electrolysis can produce H
2o
2, modified Fenton reaction can be formed with the ferrous ion that produces in Inner electrolysis process, Fenton reaction occur under the catalytic action of ferrous iron and can produce strong oxidizing property hydroxyl radical free radical, NO can be oxidized to NO
2, and then improve NO in flue gas
xclearance.
(2) electrochemistry enrichment
Numerous little galvanic cell is defined between iron and carbon in reaction system, an electric field is just created around it, under colloid in reaction solution and charged ion are in galvanic cell electric field, produce electrophoresis thus deposition of flocculating on electrode, be conducive to the removal of impurity in reaction solution.
(3) flocculation adsorption and co-precipitation
The Fe produced in Inner electrolysis reaction system
2+and Fe
3+, can [Fe be formed at pH value of solution >6.5 when having oxygen to exist
2(OH)
2]
4+, [Fe
3(OH)
4]
5+, [Fe
5(OH)
8]
7+, [Fe
7(OH)
11]
10+adsorption-flocculation effect is played Deng to the impurity in solution.
In reaction system, the cutting mechanisms of NO is as follows:
·OH+NO→HONO
2HO
2·+2NO→2HNO
2 -+O
2
·OH+NO
2→NO
3 -+H
+
2HO
2·+2NO
2→2NO
3 -+O
2+2H
+
·OH+NO
2 -→NO
2+OH
-
·OH+HONO→NO
2+H
2O
2, owing to containing sulfur dioxide (SO in multiple industrial waste gas simultaneously
2), utilize SO
2water-soluble characteristic, the utility model can remove the SO in waste gas simultaneously
2.Further, SO
2the acidity of the aqueous solution can be improved after water-soluble, reduce solution ph, reduce the consumption of outer acid adding, reduce reaction cost.
3, the utility model is by the NO in iron plate and carbon (copper) plate at normal temperatures and pressures absorbing and removing waste gas
x, and make full use of the oxygen in waste gas, reduce waste gas pollution control and treatment cost, improve NO
xclearance, realize NO
xqualified discharge, can synchronized desulfuring, reach desulfurization and denitrification integral, and technique simple operations is convenient, the cheap and wide material sources of raw material; The removal efficiency of the method to nitrogen oxides of exhaust gas is high, and no coupling product can not cause secondary pollution.
Accompanying drawing explanation
Fig. 1 is the utility model reaction unit schematic diagram;
1-reaction vessel, 2-iron plate group, 3-carbon plate group, 4-positive source, 5-power cathode, 6-agitating device, 7-aeration head.
Detailed description of the invention
below in conjunction with accompanying drawing, further detailed description is done to the utility model, specific as follows:
The utility model comprises the reaction vessel 1 filling reactant liquor, the middle part of reaction vessel 1 is provided with iron plate group 2 in submergence reactant liquor and carbon plate group 3, iron plate group 2 is welded to connect positive source 4, carbon plate group 3 is welded to connect power cathode 5, the top of iron plate group 2 and carbon plate group 3 is provided with the agitating device 6 in submergence reactant liquor, the bottom of reaction vessel 1 is provided with the aeration head 7 dividing equally distribution, and aeration head 7 will containing NO
xwaste gas pass into from bottom to top bottom reaction vessel 1 reaction vessel 1 to extend the time of contact of gas and solution.
By the flue gas denitrification device shown in Fig. 1, flue gas fully contacts with absorbing liquid after entering reactor, the NO in flue gas
xafter absorbing, Purge gas is discharged.The utility model reaction condition is acid, low the carrying out being conducive to reacting of pH value of solution.Therefore we have investigated pH value of solution is respectively 2 and the NO of pH when being 4
xremoval effect.Although treatment effect is better when pH value of solution is 2, consider pH in practical application be 2 acid solution have extremely strong corrosivity to reaction unit, in order to still Fe can be discharged in a large number when pH value of solution is 4 in system
2+, introduce the electrolysis of 100mA extra electric field strengthening iron carbon.Experimental result shows, the additional power source strengthening iron carbon electrolysis when pH value of solution is 4, to flue gas NO
xclearance also can reach 70%.
Sulfur dioxide in waste gas becomes the reactant liquor raw material in denitration, can realize desulphurization and denitration integration.
Claims (6)
1. extra electric field strengthening iron carbon electrolysis flue gas denitrification apparatus, comprise the reaction vessel (1) filling reactant liquor, it is characterized in that: the middle part of reaction vessel (1) is provided with iron plate group (2) in submergence reactant liquor and carbon plate group (3), iron plate group (2) is welded to connect positive source (4), carbon plate group (3) is welded to connect power cathode (5), the top of iron plate group (2) and carbon plate group (3) is provided with the agitating device (6) in submergence reactant liquor, the bottom of reaction vessel (1) is provided with equally distributed aeration head (7), and aeration head (7) will containing NO
xwaste gas from reaction vessel (1) bottom pass into from bottom to top reaction vessel (1).
2. extra electric field according to claim 1 strengthening iron carbon electrolysis flue gas denitrification apparatus, is characterized in that: the reactant liquor in reaction vessel (1) to be pH value be 3-5 dilution heat of sulfuric acid.
3. extra electric field strengthening iron carbon electrolysis flue gas denitrification apparatus according to claim 1, is characterized in that: carbon plate group (3) is graphite carbon plate group.
4. extra electric field strengthening iron carbon electrolysis flue gas denitrification apparatus according to claim 1, it is characterized in that: also extra electric field in two-plate group, the current strength of extra electric field is 50-200mA.
5. extra electric field strengthening iron carbon electrolysis flue gas denitrification apparatus according to claim 1, is characterized in that: the current strength of extra electric field is 50-100mA.
6. extra electric field strengthening iron carbon electrolysis flue gas denitrification apparatus according to claim 1, it is characterized in that: described carbon plate group (3) can be replaced by copper coin group, copper coin group, as inert electrode, substitutes carbon plate group (3) and connects power cathode (5) in reaction system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520482860.3U CN204816190U (en) | 2015-07-07 | 2015-07-07 | Indisputable carbon electrolysis flue gas denitration device is reinforceed to extra electric field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520482860.3U CN204816190U (en) | 2015-07-07 | 2015-07-07 | Indisputable carbon electrolysis flue gas denitration device is reinforceed to extra electric field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204816190U true CN204816190U (en) | 2015-12-02 |
Family
ID=54673833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520482860.3U Active CN204816190U (en) | 2015-07-07 | 2015-07-07 | Indisputable carbon electrolysis flue gas denitration device is reinforceed to extra electric field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204816190U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923058A (en) * | 2015-07-07 | 2015-09-23 | 国惠环保新能源有限公司 | External electric field fortified ferric carbon electrolysis flue gas denitration device and method |
-
2015
- 2015-07-07 CN CN201520482860.3U patent/CN204816190U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923058A (en) * | 2015-07-07 | 2015-09-23 | 国惠环保新能源有限公司 | External electric field fortified ferric carbon electrolysis flue gas denitration device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105056882A (en) | Preparation method of modified charcoal-based adsorbent for removing hydrogen sulfide | |
| CN103230734B (en) | Combine the method removing sulfur dioxide in flue gas and nitrogen oxide | |
| US20200002180A1 (en) | Electrochemical system for producing ammonia from nitrogen oxides and preparation method thereof | |
| CN101745304B (en) | Method for removing NO and SO2 from environment pollution emissions | |
| CN102343203B (en) | Method for purifying harmful substances in smoke produced by combustion of boiler | |
| CN102836636B (en) | Desulfurization denitration composition, preparation method and application thereof | |
| CN102989301B (en) | Flue gas wet reduction integrated desulfurization, denitrification, harmless treatment and resource utilization method | |
| CN101637688B (en) | Treatment method and device for waste gas containing nitrogen oxides | |
| CN109694119A (en) | A method of desulfurization wastewater is handled using modified activated carbon granule electrode | |
| JPH02172590A (en) | Process for removing nitrite and nitrate from aqueous solution without leaving residue | |
| CN105664682A (en) | Method for deeply desulfurizing molten salt and recycling flue gas | |
| CN103551031B (en) | Method and device for purifying phosphorus, sulfur and cyanogen under synergetic action of electrochemical oxidation and liquid phase catalytic oxidation | |
| CN205501051U (en) | Landfill leachate degree of depth processing system based on ozone advanced oxidation | |
| CN102989302A (en) | Smoke wet oxidation denitration method | |
| CN103846003A (en) | Method for removing hydrogen sulfide gas | |
| CN201551956U (en) | Treatment device for nitrogen oxidation in waste gas | |
| CN204816190U (en) | Indisputable carbon electrolysis flue gas denitration device is reinforceed to extra electric field | |
| CN102836634B (en) | Desulfurization denitration method | |
| CN105664700B (en) | A kind of processing method and processing unit of nitrogen-containing oxide industrial waste gas | |
| CN206881476U (en) | A kind of device of plasmaassisted ammonia absorption coal-fired flue-gas simultaneous SO_2 and NO removal decarburization | |
| CN205570078U (en) | Processing apparatus who contains nitrogen oxide industrial waste gas | |
| AU2021102574A4 (en) | Method and device for preparing sulfuric acid and nitric acid by synchronous desulfurization and denitrification | |
| CN111203220A (en) | Catalyst for wet flue gas denitration and application thereof | |
| CN102172469A (en) | Composite flue gas purification additive for wet flue gas desulfurization system | |
| CN108404615B (en) | Method and device for preparing sulfuric acid and nitric acid by synchronously removing sulfur and nitrate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |