CN205570078U - Processing apparatus who contains nitrogen oxide industrial waste gas - Google Patents
Processing apparatus who contains nitrogen oxide industrial waste gas Download PDFInfo
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- CN205570078U CN205570078U CN201620257497.XU CN201620257497U CN205570078U CN 205570078 U CN205570078 U CN 205570078U CN 201620257497 U CN201620257497 U CN 201620257497U CN 205570078 U CN205570078 U CN 205570078U
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- Prior art keywords
- waste gas
- denitrating tower
- permanganate
- nitrogen
- industrial waste
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- 239000007789 gas Substances 0.000 title claims abstract description 26
- 238000012545 processing Methods 0.000 title claims abstract description 25
- 239000002440 industrial waste Substances 0.000 title claims abstract description 22
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title abstract description 15
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 48
- 239000002912 waste gas Substances 0.000 claims abstract description 39
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 20
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 20
- LBSANEJBGMCTBH-UHFFFAOYSA-N manganate Chemical compound [O-][Mn]([O-])(=O)=O LBSANEJBGMCTBH-UHFFFAOYSA-N 0.000 claims abstract description 15
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 11
- 239000003814 drug Substances 0.000 claims description 6
- 238000006477 desulfuration reaction Methods 0.000 claims description 5
- 230000023556 desulfurization Effects 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 5
- 238000005273 aeration Methods 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000010186 staining Methods 0.000 abstract 1
- 239000012286 potassium permanganate Substances 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 12
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 10
- 230000001590 oxidative effect Effects 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 8
- 239000006227 byproduct Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004939 coking Methods 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010668 complexation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 231100001143 noxa Toxicity 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000036647 reaction Effects 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 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
- 229910019142 PO4 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a processing apparatus who contains nitrogen oxide industrial waste gas, including a denitrating tower, an electrolysis trough and a conveyor, conveyor will carry extremely including NOx's waste gas the bottom of denitrating tower to carry permanganate denitration agent extremely the top of denitrating tower, permanganate denitration agent will NOx turns into nitrate, and all the other liquid streams extremely the denitrating tower bottom, conveyor will again the denitrating tower bottom surplus liquid is carried extremely in the electrolysis trough, the electrolysis trough can with manganate electrolysis in the surplus liquid is permanganate, thereby forms permanganate denitration agent, conveyor is after with the electrolysis permanganate denitration agent is carried extremely the top of denitrating tower. But this processing apparatus cyclic utilization permanganate and then reduction working costs, and denitrating tower, non -staining environment are blockked up in not scale deposit.
Description
Technical field
This utility model relates to exhaust gas denitration field, particularly relates to a kind of device using permanganate denitrfying agent.
Background technology
Along with the sustainable development of China's economy, energy resource consumption is increasing year by year, NOxDischarge capacity increase rapidly.
Nitrogen oxides is extremely serious on environment and human body, vegeto-animal impact, NOxAs sour gas, oxidized
After be dissolved in water generate HNO3、HNO2, and drop to ground with rainwater, form acid rain.Enter the NO in airx
Issue third contact of a total solar or lunar eclipse chemical reaction with the primary pollution such as Hydrocarbon in the effect of ultraviolet and produce secondary pollution
Thing, the mixture of these first and second pollutant will form photochemical fog.NOxAlso before fine particle
Body thing, fine particle has important impact to air quality and visibility etc., and fine particle is to human body respiration system
System, cardiovascular system, cancer, reproduction have the most serious harm with nervous system.Endanger based on nitrogen oxides
Evil seriousness, country put into effect a series of laws and regulations control nitrogen oxides discharge, such as " 12
Five " during, China is NOxAs the binding indicator and include region overall control scope in.
For domestic exhaust gas denitration field, be adapted to boiler, Industrial Stoves, Treatment of Metal Surface, iron and steel,
The small investments of industry nox contained waste gas such as coking, the denitration technology that efficiency is high are the research weights of many scholars
Point.What wet denitration technical research was most is oxidative absorption method and Absorption via Chemical Complexation.Absorption via Chemical Complexation is because of conventional
Chelating agent Fe2+The most oxidized, need to add antioxidant, regenerative system is complicated, and energy consumption is high, run into
This height, it is difficult to promote the use of；It is high that oxidative absorption method often has removal efficiency, absorption rate is fast, equipment relatively
For advantages such as simple, operation convenience, wet denitration technology that can be ripe with present stage combine, and is relatively to have
Future, there is a class technology of researching value.Oxidative absorption method is, by oxidant, NO is oxidized to NO2,
Then absorbing with water or aqueous slkali absorbs and processes, or add oxidant in aqueous slkali, limit aoxidizes
Limit absorbs.
Wherein, KMnO4Have proved to be a kind of effective denitration oxidant, no matter at acid or alkaline environment
In, all can obtain preferable denitration efficiency, but KMnO4Make it industrially owing to there is himself defect
Application becomes a big technical barrier.First, KMnO4Expensive, and the Mn-bearing waste water of high concentration is not if
Place comprehends and causes heavy metal pollution of water body, and therefore cost for wastewater treatment is higher；It addition, be also topmost,
Use KMnO4As denitration oxidant, by KMnO4Spraying into from the top of denitrating tower, waste gas is from denitrating tower
Bottom input, KMnO4By the NO in waste gasxIt is converted into nitrate, small part KMnO4De-in oxidation
First K it is reduced into during nitre2MnO4, due to major part KMnO4It is not engaged in reaction, for saving
Cost, can recycle the remaining liquid bottom denitrating tower, it spray into the top of denitrating tower again, repeatedly
Recycle rear section K2MnO4It is reduced into MnO2,MnO2It is insoluble in the solid precipitation thing of water, thus
Cause denitration device fouling, blocking, need more conversion materials of short cycle and equipment.Owing to there is drawbacks described above,
KMnO4Oxidation and denitration is industrially difficult to be widely applied, and is the big technical barrier for this area.
Utility model content
The purpose of this utility model is to overcome the fouling relatively costly, easy of permanganate denitrfying agent in prior art
The technological deficiency of blocking, it is provided that a kind of place using permanganate denitrfying agent to process nitrogen-containing oxide industrial waste gas
Reason device.
For achieving the above object, this utility model provides the processing means of a kind of nitrogen-containing oxide industrial waste gas,
Including a denitrating tower, an electrolysis bath and a conveyer device, described conveyer device will contain NOxWaste gas be delivered to
The bottom of described denitrating tower, and permanganate denitrfying agent is delivered to the top of described denitrating tower, described Gao Meng
Hydrochlorate denitrfying agent is by described NOxBeing converted into nitrate, remaining fluid flow to bottom described denitrating tower, described conveying
Described remaining liquid bottom described denitrating tower is delivered in described electrolysis bath by device again, and described electrolysis bath can be by institute
The manganate electrolysis stated in remaining liquid is permanganate, thus forms described permanganate denitrfying agent, described conveying
Described permanganate denitrfying agent after electrolysis is delivered to the top of described denitrating tower by device.
It is preferred that the processing means of described nitrogen-containing oxide industrial waste gas also includes being connected with described conveyer device
A supervising device, described supervising device monitor described nitrate concentration, when the concentration of described nitrate reaches
During to preset value, the described remaining liquid bottom described denitrating tower is delivered in a piece-rate system by described conveyer device,
Described nitrate is reclaimed after described piece-rate system evaporative crystallization.
It is preferred that what the processing means of described nitrogen-containing oxide industrial waste gas also included being connected with described electrolysis bath
One medicament addition device, in order to supplement alkali in described electrolysis bath.
It is preferred that what the processing means of described nitrogen-containing oxide industrial waste gas also included being connected with described electrolysis bath
One medicament addition device, in order to electrolyte supplement in described electrolysis bath.
It is preferred that what the processing means of described nitrogen-containing oxide industrial waste gas also included being connected with described denitrating tower
One desulfurizer, described conveyer device will contain NOxDescribed waste gas be delivered to described denitrating tower bottom it
Front described waste gas is delivered to described desulfurizer carries out desulfurization process.
It is preferred that described conveyer device includes that described waste gas is delivered to described denitration by a blower fan, described blower fan
The bottom of tower.
It is preferred that the outfan of described blower fan is provided with an aeration head.
Compared with prior art, the processing means of nitrogen-containing oxide industrial waste gas of the present utility model has following
Some advantage: the oxidisability of (1) permanganate denitrfying agent is strong, it is possible to the NO in efficient removal waste gasx, de-
Dirty rate is high；(2) utilizing electrolysis tech to promote permanganate circular regeneration, permanganate denitrfying agent is at denitrating tower
Generate by-product manganate after internal oxidition absorbing NOx, be then transferred in electrolysis bath, at electrolysis bath
Anode react: MnO4 2--e-→MnO4 -, by-product+6 valency manganese can be converted to institute by electrolysis
+ 7 valency manganese needed, not only make permanganate recycle, and reach to reduce the purpose of by-product manganate simultaneously,
Both having met denitration requirement, and reduced again cost, operating cost is low；(3) this utility model device therefor is simple,
Small investment, it is adaptable to all containing NOxThe purified treatment of waste gas, at boiler, Industrial Stoves, metal surface
The waste gas of the industries such as reason, iron and steel, coking, applied widely, economic and environmental benefit is considerable；(4) in waste gas
NOxHigh economic worth, broad-spectrum nitrate can be converted into so that nitrogen resource is fully returned
Receive and utilize；(5) first permanganate is reduced into manganate during oxidation and denitration, and is being circulated
Use electrolysis bath that the manganate in remaining liquid is converted to permanganate in time before utilization, it is therefore prevented that mangaic acid
Salt is reduced into manganese dioxide during further oxidation and denitration, therefore denitrating technique energy continuous-stable fortune
OK, there is not such as fouling, blocking and more conversion materials of short cycle and equipment that existing denitration device is commonly present
Etc. problem.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the processing means of this utility model nitrogen-containing oxide industrial waste gas.
Detailed description of the invention
With reference now to accompanying drawing, describing embodiment of the present utility model, element numbers similar in accompanying drawing represents similar
Element.
This utility model provides the processing means of a kind of nitrogen-containing oxide industrial waste gas, and reusable edible aoxidizes
Denitrfying agent permanganate, and then reduce operating cost.
As it is shown in figure 1, waste gas enters desulfurizer 7 after dedusting carries out desulfurization process, giving up after desulfurization
Gas inputs from the bottom of denitrating tower 3 through conveyer device.Specifically, conveyer device includes a blower fan 5, blower fan 5
Being connected with denitrating tower 3 and desulfurizer 7, and the outfan of blower fan 5 is provided with an aeration head 4, blower fan 5 can be by
Waste gas after desulfurization is delivered to the bottom of denitrating tower 3 through aeration head 4.Denitrating tower can be all in prior art
For the device of denitration, such as spray column or Pneumatic emulsifying tower, do not limit at this.Permanganate denitrfying agent
For oxidant, in order to remove the NO in waste gasx, include permanganate and alkali, Gao Meng in the present embodiment
From the top of denitrating tower 3, pump 2 through conveyer device pumps into hydrochlorate denitrfying agent, downward permanganate denitrfying agent
With upwards containing NOxWaste gas gas-to-liquid contact, and by the NO in waste gasxOxidative absorption, due to permanganate
Oxidisability strong, the denitration rate of waste gas is high, it is possible to is adjusted according to emission request, reaches as high as 99%
Above, the waste gas after denitration is from the discharge up to standard of the top of denitrating tower 3, oxidative absorption NOxAfter remaining liquid stream extremely
The bottom of denitrating tower 3.
Specifically, the denitration reaction equation occurred in denitrating tower 3 has:
3MnO4 -+NO+4OH-→3MnO4 2-+NO3 -+2H2O；
MnO4 -+NO2+2OH-→MnO4 2-+NO3 -+H2O；
Understanding from above-mentioned denitration reaction equation, reaction creates by-product mangaic acid root, and its oxidisability is less than
MnO4, and its recycling during may be reduced into MnO2, MnO2It is insoluble in water
Solid precipitation thing, thus cause denitration device fouling, blocking, need more conversion materials of short cycle and equipment；Separately
Outward, owing to it contains metallic element manganese, also can not arbitrarily discharge, just can discharge after needing to be dealt carefully with,
Which increase cost of sewage disposal.To this end, processing means of the present utility model provides an electrolysis bath 1, will be de-
Remaining liquid bottom nitre tower 3 is delivered in this electrolysis bath 1, and electrolysis bath 1 is energized, with by the manganate in remaining liquid
Electrolysis is permanganate.Specifically, this electrolysis bath 1 can use any type of electrolytic method, such as barrier film
Method, ion exchange etc., use without barrier film, dynamic electric solution in the present embodiment, electrolysis temperature controls
Between 20～95 DEG C, and the electric current density scalable of this electrolysis bath 1, it is preferred that electric current density in the range of
5～150mA/cm2。
Specifically, the cell reaction equation occurred in electrolysis bath 1 has:
Anode, MnO4 2—e-→MnO4 -；And
Negative electrode: 2H++2e-→H2↑。
Knowable to above-mentioned cell reaction equation, manganate betatopic regenerates the Gao Meng with strong oxidizing property
Hydrochlorate, is regenerated, reusable edible, is electrolysed the hydrogen recoverable produced or directly discharges.
Also understanding from above-mentioned denitration reaction equation, permanganate denitrfying agent is by NOxIt is converted into nitrate,
It has industrial value, recoverable.Specifically, processing means of the present utility model also includes and conveying
The supervising device (not shown) that device is connected, the concentration of supervising device monitoring nitrate, dense when nitrate
When degree reaches a preset value, the remaining liquid bottom denitrating tower 3 is delivered in a piece-rate system 6 by conveyer device,
Reclaiming nitrate after piece-rate system 6 evaporative crystallization, remaining liquid contains manganate and permanganate, is delivered to electrolysis
It is electrolysed in groove 1.Visible, this utility model produces without waste water, non-secondary pollution problem, and can be by useless
NO in gasxIt is converted into the nitrate of economic worth.
It is preferred that processing means of the present utility model also includes the medicament addition device 8 being connected with electrolysis bath,
In order to supplement alkali in electrolysis bath 1, its dosage can increase and decrease according to actual needs.It addition, in order to carry
High electrolytic efficiency, can add appropriate electrolyte to electrolysis bath 1 by medicament addition device 8, as sulfate,
Nitrate or phosphate etc..
According to the processing means of above nitrogen-containing oxide industrial waste gas, carry out following groups data test simultaneously.
First group: by potassium permanganate solution that mass percent concentration is 0.5% from the top down of denitrating tower 3
Spray, by NOxConcentration is 1314.84mg/m3Waste gas from the bottom of denitrating tower 3 input, remaining liquid enter electricity
Carrying out being electrolysed Posterior circle in solving groove 1 to utilize, electrolysis temperature is 20 DEG C, and electric current density is 5mA/cm2.Denitration
After waste gas from the discharge up to standard of the top of denitrating tower 3, the NO of the waste gas of detection dischargexConcentration is 65.74
mg/m3, denitration rate has reached 95%.
Second group: by potassium permanganate solution that mass percent concentration is 0.4% from the top down of denitrating tower 3
Spray, by NOxConcentration is 812.74mg/m3Waste gas from the bottom of denitrating tower 3 input, remaining liquid enter electricity
Carrying out being electrolysed Posterior circle in solving groove 1 to utilize, electrolysis temperature is 60 DEG C, and electric current density is 80mA/cm2.Denitration
After waste gas from the discharge up to standard of the top of denitrating tower 3, the NO of the waste gas of detection dischargexConcentration is 56.08
mg/m3, denitration rate has reached 93.1%.
3rd group: by potassium permanganate solution that mass percent concentration is 0.5% from the top down of denitrating tower 3
Spray, by NOxConcentration is 799.70mg/m3Waste gas from the bottom of denitrating tower 3 input, remaining liquid enter electricity
Carrying out being electrolysed Posterior circle in solving groove 1 to utilize, electrolysis temperature is 80 DEG C, and electric current density is 100mA/cm2.De-
Waste gas after nitre is from the discharge up to standard of the top of denitrating tower 3, the NO of the waste gas of detection dischargexConcentration is 6.00
mg/m3, denitration rate has reached 99.25%.
4th group: by potassium permanganate solution that mass percent concentration is 0.1% from the top down of denitrating tower 3
Spray, by NOxConcentration is 796.80mg/m3Waste gas from the bottom of denitrating tower 3 input, remaining liquid enter electricity
Carrying out being electrolysed Posterior circle in solving groove 1 to utilize, electrolysis temperature is 95 DEG C, and electric current density is 150mA/cm2.De-
Waste gas after nitre is from the discharge up to standard of the top of denitrating tower 3, the NO of the waste gas of detection dischargexConcentration is 78.56
mg/m3, denitration rate has reached 90.14%.
Knowable to above four groups of data, the processing means of nitrogen-containing oxide industrial waste gas of the present utility model has
High denitration rate, denitration rate is all more than 90%.
Compared with prior art, the processing means of nitrogen-containing oxide industrial waste gas of the present utility model has following
Some advantage: the oxidisability of (1) permanganate denitrfying agent is strong, it is possible to the NO in efficient removal waste gasx, de-
Nitre rate is high, can reach more than 90%；(2) electrolysis tech is utilized to promote permanganate circular regeneration, permanganic acid
Salt denitrfying agent generates by-product manganate after denitrating tower internal oxidition absorbing NOx, is then transferred to electricity
In solution groove, the anode at electrolysis bath reacts: MnO4 2--e-→MnO4 -, can be by by-product+6 valency manganese
Be converted to+7 required valency manganese by electrolysis, not only make permanganate recycle, reach to reduce by-product simultaneously
The purpose of thing manganate, had both met denitration requirement, had reduced again cost, and operating cost is low；(3) this practicality
Novel device therefor is simple, small investment, it is adaptable to all containing NOxThe purified treatment of waste gas, such as boiler, work
The waste gas of the industries such as industry kiln, Treatment of Metal Surface, iron and steel, coking, applied widely, economic benefit can
See；(4) NO in waste gasxHigh economic worth, broad-spectrum nitrate can be converted into so that nitrogen
Resource is fully recycled；(5) first permanganate is reduced into mangaic acid during oxidation and denitration
Salt, and used electrolysis bath that the manganate in remaining liquid is converted to permanganic acid in time before being recycled
Salt, it is therefore prevented that manganate is reduced into manganese dioxide during further oxidation and denitration, therefore denitration work
, there is not such as fouling, blocking and short cycle that existing denitration device is commonly present in artistic skill continuous and steady operation
The problems such as more conversion materials and equipment.
Above disclosed only preferred embodiment of the present utility model, can not limit this with this certainly
The interest field of utility model, the equivalent variations therefore made according to this utility model claim, still belong to
The scope that this utility model is contained.
Claims (7)
1. the processing means of a nitrogen-containing oxide industrial waste gas, it is characterised in that include a denitrating tower, one
Electrolysis bath and a conveyer device, described conveyer device will contain NOxWaste gas be delivered to the bottom of described denitrating tower,
And permanganate denitrfying agent is delivered to the top of described denitrating tower, described permanganate denitrfying agent is by described NOx
Being converted into nitrate, remaining fluid flow to bottom described denitrating tower, and described conveyer device is again by the bottom of described denitrating tower
The described remaining liquid in portion is delivered in described electrolysis bath, and described electrolysis bath can be by the manganate electrolysis in described remaining liquid
For permanganate, thus forming described permanganate denitrfying agent, described conveyer device is by the described height after electrolysis
Manganate denitrfying agent is delivered to the top of described denitrating tower.
2. the processing means of nitrogen-containing oxide industrial waste gas as claimed in claim 1, it is characterised in that: also
Including the supervising device being connected with described conveyer device, described supervising device monitors the concentration of described nitrate,
When the concentration of described nitrate reaches preset value, described remaining by bottom described denitrating tower of described conveyer device
Liquid is delivered in a piece-rate system, reclaims described nitrate after described piece-rate system evaporative crystallization.
3. the processing means of nitrogen-containing oxide industrial waste gas as claimed in claim 1, it is characterised in that: also
Including the medicament addition device being connected with described electrolysis bath, in order to supplement alkali in described electrolysis bath.
4. the processing means of nitrogen-containing oxide industrial waste gas as claimed in claim 1, it is characterised in that: also
Including the medicament addition device being connected with described electrolysis bath, in order to electrolyte supplement in described electrolysis bath.
5. the processing means of nitrogen-containing oxide industrial waste gas as claimed in claim 1, it is characterised in that: also
Including the desulfurizer being connected with described denitrating tower, described conveyer device will contain NOxDescribed waste gas defeated
Before delivering to the bottom of described denitrating tower, described waste gas is delivered to described desulfurizer and carries out desulfurization process.
6. the processing means of nitrogen-containing oxide industrial waste gas as claimed in claim 5, it is characterised in that: institute
State conveyer device and include that described waste gas is delivered to the bottom of described denitrating tower by a blower fan, described blower fan.
7. the processing means of nitrogen-containing oxide industrial waste gas as claimed in claim 6, it is characterised in that: institute
The outfan stating blower fan is provided with an aeration head.
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| CN201620257497.XU CN205570078U (en) | 2016-03-30 | 2016-03-30 | Processing apparatus who contains nitrogen oxide industrial waste gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105664700A (en) * | 2016-03-30 | 2016-06-15 | 广州绿华环保科技有限公司 | Method and device for treating industrial waste gas containing nitric oxide |
| CN110585844A (en) * | 2019-10-12 | 2019-12-20 | 杭州临安清云环保设备有限公司 | Plastic granulation waste gas treatment system and waste gas treatment process |
| CN111282412A (en) * | 2020-03-23 | 2020-06-16 | 厦门紫金矿冶技术有限公司 | Wet flue gas denitration process for regenerated potassium permanganate |
-
2016
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105664700A (en) * | 2016-03-30 | 2016-06-15 | 广州绿华环保科技有限公司 | Method and device for treating industrial waste gas containing nitric oxide |
| WO2017166439A1 (en) * | 2016-03-30 | 2017-10-05 | 广州绿华环保科技有限公司 | Method and device for treating industrial waste gas containing nitrogen oxide |
| CN110585844A (en) * | 2019-10-12 | 2019-12-20 | 杭州临安清云环保设备有限公司 | Plastic granulation waste gas treatment system and waste gas treatment process |
| CN111282412A (en) * | 2020-03-23 | 2020-06-16 | 厦门紫金矿冶技术有限公司 | Wet flue gas denitration process for regenerated potassium permanganate |
| CN111282412B (en) * | 2020-03-23 | 2022-03-01 | 厦门紫金矿冶技术有限公司 | Wet flue gas denitration process for regenerated potassium permanganate |
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