CN109647190A - A kind of de- integrative coordinated processing equipment of dioxin of combined denitration - Google Patents
A kind of de- integrative coordinated processing equipment of dioxin of combined denitration Download PDFInfo
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- CN109647190A CN109647190A CN201910074094.XA CN201910074094A CN109647190A CN 109647190 A CN109647190 A CN 109647190A CN 201910074094 A CN201910074094 A CN 201910074094A CN 109647190 A CN109647190 A CN 109647190A
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- dioxin
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- 238000012545 processing Methods 0.000 title claims abstract description 14
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 title claims abstract 18
- 239000003054 catalyst Substances 0.000 claims abstract description 61
- 238000006243 chemical reaction Methods 0.000 claims abstract description 40
- 230000002153 concerted effect Effects 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000000470 constituent Substances 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 27
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 27
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical group O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 27
- 239000000292 calcium oxide Substances 0.000 claims description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 15
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 15
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 claims description 15
- 239000000377 silicon dioxide Substances 0.000 claims description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 12
- 229910052681 coesite Inorganic materials 0.000 claims description 12
- 229910052593 corundum Inorganic materials 0.000 claims description 12
- 229910052906 cristobalite Inorganic materials 0.000 claims description 12
- 229910052682 stishovite Inorganic materials 0.000 claims description 12
- 229910052905 tridymite Inorganic materials 0.000 claims description 12
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000006555 catalytic reaction Methods 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 8
- 239000002196 Pyroceram Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 claims description 4
- 239000011149 active material Substances 0.000 claims description 3
- -1 alchlor Substances 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 3
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 65
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 30
- 238000009434 installation Methods 0.000 description 25
- 238000000034 method Methods 0.000 description 9
- 235000012239 silicon dioxide Nutrition 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000010813 municipal solid waste Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000004056 waste incineration Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000185 dioxinlike effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- DNIPNFCYSYISHU-UHFFFAOYSA-N O1C=COC=C1.[C] Chemical compound O1C=COC=C1.[C] DNIPNFCYSYISHU-UHFFFAOYSA-N 0.000 description 1
- 230000010718 Oxidation Activity Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of combined denitrations to take off the integrative coordinated processing equipment of dioxin, it include: concerted reaction device, SCR denitration, SCO takes off dioxin catalyst, sealing element, the concerted reaction device is cartridge seal channel made of heat-resisting material, concerted reaction device upper and lower ends are opening, the SCR denitration, the de- dioxin catalyst of SCO separately constitutes a layer body layering and is seated in inside concerted reaction device, the sealing element is arranged in the gap between layer body and between layer body and concerted reaction device, the SCR denitration is catalyst universal in the market, the active window temperature of SCR denitration is between 150 ~ 450 DEG C, the SCO takes off dioxin catalyst by carrier, active constituent, structural material composition.The invention enables denitration take off dioxin collaboration carry out, catalyst therein promote harmful substance decompose, at low cost, reaction condition is low, effect is obvious.
Description
Technical field
The present invention relates to technical field of waste gas treatment, specially a kind of combined denitration takes off the integrative coordinated processing of dioxin and sets
It is standby.
Background technique
Burning power plant carries out rubbish by the oxygenolysis under high temperature by reactions such as thermal decomposition, burning, meltings
Volume reduction, becomes residue or molten solids substance, and the heat that recycling waste incineration generates can reach the purpose of waste resource recovery.
After being handled due to rubbish with incineration method, reduction is significant, saves land used, can also eliminate various pathogen, will be poisonous and harmful
Substance is converted into harmless object, and can produce electricl energy by power generator, therefore waste incineration and generating electricity has become treatment of urban garbage
One of main method.However waste incinerator can generate harmful substance, there is nitrogen oxides, dioxin, oxysulfide, lime-ash, powder
Dirt, waste water and garbage leachate etc., wherein main harm is dioxin contamination.
The flue gas treating process of traditional burning power plant is SNCR denitration+semidry method depickling+dry powder injection+active carbon
Dioxin+bag-type dusting is adsorbed, this process route achieves application in many burning power plants, has simple process, answers
With extensive advantage, but with the proposition that the pollutants minimizing such as NOx, dioxin requires, this process route be increasingly difficult to
Meet environmental requirement from now on, there are many defects:
The denitration efficiency of 1.SNCR is lower, and NOx emission concentration can reach < 250mg/Nm at present3Environmental requirement, but be difficult to meet
The subsequent discharge index mentioned after mark；
2. dioxin removal efficiency is unstable, the influence of fluctuations by drawing-in device job stability；
It is transferred in flying dust 3. dioxin is tightly held by activated carbon, the total amount of dioxin is not reduced；
It 4. containing dioxin in the flying dust generated, need to send to the safe handling again of dangerous waste treatment plant, generate dangerous waste disposition and take；
5. spraying active carbon in dust-precipitator, potential fire hazard can be brought to the normal use of filter bag；
6. needing to consume active carbon daily, the efficiency of dioxin and the specific surface area of active carbon, the mixability of flue gas etc. are adsorbed
Because being known as substantial connection, it is difficult to stability contorting dioxin.
Therefore, there is an urgent need for new technologies to solve the above problems for the fume treatment of burning power plant.
Summary of the invention
The purpose of the present invention is to provide a kind of combined denitrations to take off the integrative coordinated processing equipment of dioxin, to nitrogen oxidation
Object, dioxin have higher removal efficiency, and are able to achieve the effect of cooperation-removal, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the invention provides the following technical scheme: a kind of de- dioxin of combined denitration is integrative coordinated
Processing equipment, comprising: concerted reaction device, SCR denitration, SCO take off dioxin catalyst, sealing element, and the collaboration is anti-
Answering device is cartridge seal channel made of heat-resisting material, and concerted reaction device upper and lower ends are opening, the SCR denitration catalysis
Agent, the de- dioxin catalyst of SCO separately constitute a layer body layering and are seated in inside concerted reaction device, and the sealing element is arranged in layer
In gap between body and between layer body and concerted reaction device, the SCR denitration is catalysis universal in the market
Agent, the active window temperature of SCR denitration between 150 ~ 450 DEG C, the SCO take off dioxin catalyst by carrier,
Active constituent, structural material composition.
Further, the layer body is vertically disposed with 4 layers of sheet building in concerted reaction device, wherein 1-2 layers of dress
Enter SCR denitration, 4 layers of loading SCO take off dioxin catalyst, and 3 layers may be selected to be packed into de- two evil of SCR denitration, SCO
English catalyst does not fill, depending on waste gas content ratio in flue gas.
Further, the structure of the SCR denitration be one of cellular, flat, corrugated plate dst or
It is a variety of.
Further, it is titanium dioxide that the SCO, which takes off the carrier of dioxin catalyst, and quality accounting is 80 ~ 90%；Institute
The active material that the SCO stated takes off dioxin catalyst is vanadic anhydride, ceria, tungstic acid and neodymia, and quality accounts for
Than being 1 ~ 10%；The structural material that the SCO takes off dioxin catalyst is silica, alchlor, calcium oxide, and quality accounts for
Than being 1 ~ 8%.
Further, the SCO takes off dioxin catalyst components, is in terms of 100% by quality summation, each component contains
It measures as follows:
TiO280~90%；
V2O50.1~5%；
CeO20.1~5%；
WO33~8%；
Nd2O30.1~5%；
SiO23~5%；
Al2O30.1~1%；
CaO 0.1~1%。
Further, the sealing element is by pyroceram fibre cotton, a kind of system of cellucotton carbon steel, stainless steel elastic slice
At.
Concerted reaction device is arranged in the present invention, and the de- dioxin catalyst of SCR denitration, SCO is packed into this reactor,
Joint removing nitrogen oxides and dioxin pollution object.
Nitrogen oxides under the effect of the catalyst, reacts with reducing agent NH3 and generates CO2And water, the chemical equation of reaction
Are as follows:
4NH3+4NO+O2→4N2+6H2O；
Dioxin oxygenolysis under the action of catalyst generates CO2, water and micro hydrogen chloride.Reaction equation are as follows:
Synergistic principle is:
1, according to the chemical equation of reaction, the decomposition of nitrogen oxides and dioxin all has occurred oxidation reaction, SCR catalyst and
SCO catalyst all has oxidation activity position, can promote nitrogen oxides, dioxin that oxidation reaction occurs.SCR system is not complete
The nitrogen oxides of full response can remove in subsequent SCO system；Similarly, SCR system can decompose a part of small molecule,
Easily decomposed dioxin-like chemical, it is difficult to the macromolecular of decomposition, complicated dioxin-like chemical remove in SCO system, and two
The collocation of person avoid small molecule occupy SCO active sites and caused by complexity dioxin the phenomenon that cannot effectively decomposing.
Therefore, combined denitration of the invention, which takes off the integrative coordinated processing equipment of dioxin, can play the synergy of 1+1 > 2.
2, nitrogen oxides and NH3 react be it is incomplete, the NH3 escape for having sub-fraction generates, and will lead to subsequent
The damage of equipment, and the HCl that dioxin generates after decomposing can effectively neutralize the NH3 of escape part, generate harmless NH4Cl, from
And avoid the damage of follow-up equipment；Meanwhile individual SCO takes off dioxin system and also has HCl acid corrosion, the NH3 escape of SCR
Just this deficiency is compensated for.Therefore SCR catalyst and SCO catalyst are used cooperatively, and mutually compensate for respective defect,
Play the synergy of 1+1 > 2.
3,1 ~ 3 layer of installation SCR denitration in concerted reaction device, 3 ~ 4 layers of installation SCO take off dioxin catalyst, with
For 4 layers of setting, initial stage in the 1st, 2 layer of installation SCR denitration, in the de- dioxin catalyst of the 4th layer of installation SCO, the 3rd layer
It is spare, as the installation site after the discharge standard raising of nitrogen oxides from now on, dioxin.The nitrogen of waste incineration industry at present
The discharge standard of oxide is 250mg/Nm3, and the discharge standard of dioxin is 0.1ng TEQ/Nm3, and is all improved discharge mark
Quasi- trend, if nitrogen oxides improves discharge standard, third layer fills SCR denitration, takes off dioxin and improves discharge standard,
Dioxin catalyst then is taken off in third layer installation SCO, to reach better synergy.
Compared with prior art, the beneficial effects of the present invention are:
1.NOx and dioxin pollution object cooperation-removal, avoid subsequent recombine；
2.NOx removal rate is higher relative to SNCR technique, and outlet nitrogen oxides can reach 50mg/Nm3Below；
3. dioxin pollution object is resolved into innoxious substance, rather than adsorbs and turns using the strong oxidizing property of SCO catalyst
It moves, is not necessarily to secondary treatment；
4. dioxin pollution object decomposition efficiency is high, reach 99% or more；
5.SCO catalyst has wider active window, and de- dioxin activity is all had at 200 ~ 450 DEG C；
6.SCO catalyst has longer service life, reaches 24000h or more；
7.SCO catalyst reproducible utilization；
8. it is at low cost to put into operation, the removal of dioxin pollution object is put into without endlessly raw material；
9. overall economy quality is better than active carbon absorption technology, cost of building and put into operation is with 10 term calculating ratio active carbon absorption technologies
Save 50% or more；
10. convenient to construct, can on the basis of existing equipment improvement and installation.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the invention；
Fig. 2 is cross section structure schematic diagram of the invention；
In figure: 1- concerted reaction device；2-SCR denitrating catalyst；3- sealing element；4-SCO takes off dioxin catalyst.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1,2 are please referred to, the present invention provides a kind of combined denitrations to take off the integrative coordinated processing equipment of dioxin, comprising:
Concerted reaction device, SCR denitration, SCO take off dioxin catalyst, sealing element, and the concerted reaction device 1 is high temperature resistant material
Cartridge seal channel made of expecting, 1 upper and lower ends of concerted reaction device are opening, and the SCR denitration 2, SCO de- two is disliked
English catalyst 3 separately constitutes the layering of layer body and is seated in inside concerted reaction device 1, the sealing element 3 be arranged between layer body with
And in the gap between layer body and concerted reaction device 1, the SCR denitration 2 is catalyst universal in the market, SCR
For the active window temperature of denitrating catalyst 2 between 150 ~ 450 DEG C, the SCO takes off dioxin catalyst 3 by carrier, activity
Ingredient, structural material composition.
Further, the layer body is vertically disposed with 4 layers of sheet building in concerted reaction device 1, wherein 1-2 layers of dress
Enter SCR denitration, 4 layers of loading SCO take off dioxin catalyst, and 3 layers may be selected to be packed into de- two evil of SCR denitration, SCO
English catalyst does not fill, depending on waste gas content ratio in flue gas.
Further, the structure of the SCR denitration 2 be one of cellular, flat, corrugated plate dst or
It is a variety of.
Further, it is titanium dioxide that the SCO, which takes off the carrier of dioxin catalyst 3, and quality accounting is 80 ~ 90%；Institute
The active material that the SCO stated takes off dioxin catalyst is vanadic anhydride, ceria, tungstic acid and neodymia, and quality accounts for
Than being 1 ~ 10%；The structural material that the SCO takes off dioxin catalyst is silica, alchlor, calcium oxide, and quality accounts for
Than being 1 ~ 8%.
Further, the SCO takes off dioxin catalyst components, is in terms of 100% by quality summation, each component contains
It measures as follows:
TiO280~90%；
V2O50.1~5%；
CeO20.1~5%；
WO33~8%；
Nd2O30.1~5%；
SiO23~5%；
Al2O30.1~1%；
CaO 0.1~1%。
Further, the sealing element is by pyroceram fibre cotton, a kind of system of cellucotton carbon steel, stainless steel elastic slice
At.
Embodiment one:
1) concerted reaction device:
4 layers of setting in reactor, the 1st, 2 layer of installation SCR denitration, the 3rd layer spare, and the 4th layer of installation SCO takes off dioxin and urge
Agent.
2) SCR denitration:
For SCR denitration using honeycomb fashion, active temperature windows are 150 ~ 300 DEG C.
3) SCO takes off dioxin catalyst:
Component ratio: TiO2 content is 90%, V2O5 content is 0.1%, CeO2 content is 0.1%；WO3 content is that 3%, Nd2O3 contains
Amount is 1.5%, SiO2 content is 4%, Al2O3 content is 0.3%, CaO content 0.5%.
3) sealing element:
Using pyroceram fibre cotton as sealing element.
Embodiment two:
1) concerted reaction device:
3 layers of setting in reactor, the 1st layer of installation SCR denitration, the 2nd layer spare, and the 3rd layer of installation SCO takes off dioxin catalysis
Agent.
2) SCR denitration:
For SCR denitration using honeycomb fashion, active temperature windows are 300 ~ 450 DEG C.
3) SCO takes off dioxin catalyst:
Component ratio: TiO2 content is 83%, V2O5 content is 1%, CeO2 content is 2%；WO3 content is 5%, Nd2O3 content is
3%, SiO2 content is 3.5%, Al2O3 content is 1%, CaO content 1%.
3) sealing element:
Using carbon steel as sealing element.
Embodiment three:
1) concerted reaction device:
Reactor is arranged 4 layers, and the 1st, 2 layer of installation SCR denitration, the 3rd layer spare, and the 4th layer of installation SCO takes off dioxin catalysis
Agent.
2) SCR denitration:
For SCR denitration using flat, active temperature windows are 150 ~ 300 DEG C.
3) SCO takes off dioxin catalyst:
Component ratio: TiO2 content is 80%, V2O5 content is 1.5%, CeO2 content is 3.5%；WO3 content is that 6%, Nd2O3 contains
Amount is 5%, SiO2 content is 3%, Al2O3 content is 0.1%, CaO content 0.1%.
3) sealing element:
Using stainless steel as sealing element.
Example IV:
1) concerted reaction device:
Reactor is arranged 3 layers, and the 1st, 2 layer of installation SCR denitration, the 3rd layer of installation SCO takes off dioxin catalyst.
2) SCR denitration；
For SCR denitration using flat, active temperature windows are 300 ~ 450 DEG C.
3) SCO takes off dioxin catalyst:
Component ratio: TiO2 content is 83%, V2O5 content is 2%, CeO2 content is 1%；WO3 content is 5%, Nd2O3 content is
4%, SiO2 content is 3.5%, Al2O3 content is 0.5%, CaO content 0.2%.
3) sealing element:
Using stainless steel as sealing element.
Embodiment five:
1) concerted reaction device:
Reactor is arranged 4 layers, and the 1st, 2 layer of installation SCR denitration, the 3rd layer spare, and the 4th layer of installation SCO takes off dioxin catalysis
Agent.
2) SCR denitration:
SCR denitration uses corrugated plate dst, and active temperature windows are 150 ~ 300 DEG C.
3) SCO takes off dioxin catalyst:
Component ratio: TiO2 content is 81%, V2O5 content is 2.5%, CeO2 content is 2.5%；WO3 content is that 8%, Nd2O3 contains
Amount is 1%, SiO2 content is 3.5%, Al2O3 content is 0.5%, CaO content 0.2%.
3) sealing element:
Using pyroceram fibre cotton as sealing element.
Embodiment six:
1) concerted reaction device:
Reactor is arranged 4 layers, and the 1st, 2 layer of installation SCR denitration, the 3rd layer spare, and the 4th layer of installation SCO takes off dioxin catalysis
Agent.
2) SCR denitration:
SCR denitration uses corrugated plate dst, and active temperature windows are 300 ~ 450 DEG C.
3) SCO takes off dioxin catalyst:
Component ratio: TiO2 content is 84%, V2O5 content is 3%, CeO2 content is 4%；WO3 content is 3%, Nd2O3 content is
2.5%, SiO2 content is 3.5%, Al2O3 content is 0.5%, CaO content 0.2%.
3) sealing element:
Using pyroceram fibre cotton as sealing element.
Embodiment seven:
1) concerted reaction device:
Reactor is arranged 4 layers, and the 1st, 2 layer of installation SCR denitration, the 3rd layer spare, and the 4th layer of installation SCO takes off dioxin catalysis
Agent.
2) SCR denitration:
For SCR denitration using honeycomb fashion, active temperature windows are 300 ~ 450 DEG C.
3) SCO takes off dioxin catalyst:
Component ratio: TiO2 content is 80%, V2O5 content is 3.5%, CeO2 content is 1.5%；WO3 content is that 8%, Nd2O3 contains
Amount is 2%, SiO2 content is 3%, Al2O3 content is 1%, CaO content 0.1%.
3) sealing element:
Using stainless steel as sealing element.
Embodiment eight:
1) concerted reaction device:
Reactor is arranged 4 layers, and the 1st, 2 layer of installation SCR denitration, the 3rd layer spare, and the 4th layer of installation SCO takes off dioxin catalysis
Agent.
2) SCR denitration:
For SCR denitration using honeycomb fashion, active temperature windows are 300 ~ 450 DEG C.
3) SCO takes off dioxin catalyst:
Component ratio: TiO2 content is 86%, V2O5 content is 4%, CeO2 content is 0.5%；WO3 content is 5%, Nd2O3 content
For 0.1%, SiO2 content be 3%, Al2O3 content is 0.3%, CaO content 0.1%.
3) sealing element:
Using pyroceram fibre cotton as sealing element.
Embodiment nine:
1) concerted reaction device:
Reactor is arranged 4 layers, and the 1st, 2 layer of installation SCR denitration, the 3rd layer spare, and the 4th layer of installation SCO takes off dioxin catalysis
Agent.
2) SCR denitration:
For SCR denitration using honeycomb fashion, active temperature windows are 300 ~ 450 DEG C.
3) SCO takes off dioxin catalyst:
Component ratio: TiO2 content is 86%, V2O5 content is 5%, CeO2 content is 0.5%；WO3 content is 3%, Nd2O3 content
For 1%, SiO2 content be 3.5%, Al2O3 content is 0.3%, CaO content 0.1%.
3) sealing element:
Using pyroceram fibre cotton as sealing element.
Performance test
The equipment of above-described embodiment is tested to denitration on small-sized simulating-estimating device and takes off dioxin performance, is passed through NO, chlorobenzene, is surveyed
Strip part are as follows: reaction temperature is 200 DEG C, air speed 13333h-1, oxygen concentration 9%, NO concentration is 200ppm, and chlorobenzene concentration is
200ppm, test result see the table below:
| Serial number | Denitration efficiency % | De- dioxin efficiency % |
| Embodiment 1 | 76 | 85 |
| Embodiment 2 | 89 | 87 |
| Embodiment 3 | 92 | 90 |
| Embodiment 4 | 90 | 88 |
| Embodiment 5 | 94 | 91 |
| Embodiment 6 | 96 | 93 |
| Embodiment 7 | 96 | 95 |
| Embodiment 8 | 97 | 99 |
| Embodiment 9 | 96 | 98 |
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, it is possible to understand that
These embodiments can be carried out with a variety of variations, modification, replacement without departing from the principles and spirit of the present invention and become
Type, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of combined denitration takes off the integrative coordinated processing equipment of dioxin, it is characterised in that: include: concerted reaction device, SCR de-
Denox catalyst, SCO take off dioxin catalyst, sealing element, and the concerted reaction device is cartridge seal made of heat-resisting material
Channel, concerted reaction device upper and lower ends are opening, and the SCR denitration, SCO take off dioxin catalyst and separately constitute layer
Body layering is seated in inside concerted reaction device, and the sealing element is arranged between layer body and between layer body and concerted reaction device
Gap in, the SCR denitration is universal catalyst in the market, the active window temperature of SCR denitration
Between 150 ~ 450 DEG C, the SCO takes off dioxin catalyst and is made of carrier, active constituent, structural material.
2. a kind of combined denitration according to claim 1 takes off the integrative coordinated processing equipment of dioxin, it is characterised in that: institute
The layer body stated is vertically disposed with 4 layers of sheet building in concerted reaction device, wherein 1-2 layers of loading SCR denitration, and 4 layers
It is packed into SCO and takes off dioxin catalyst, 3 layers may be selected to be packed into the de- dioxin catalyst of SCR denitration, SCO or not fill, depending on cigarette
In gas depending on waste gas content ratio.
3. a kind of combined denitration according to claim 1 takes off the integrative coordinated processing equipment of dioxin, it is characterised in that: institute
The structure for the SCR denitration stated is one of cellular, flat, corrugated plate dst or a variety of.
4. a kind of combined denitration according to claim 1 takes off the integrative coordinated processing equipment of dioxin, it is characterised in that: institute
The carrier that the SCO stated takes off dioxin catalyst is titanium dioxide, and quality accounting is 80 ~ 90%；The SCO takes off dioxin catalysis
The active material of agent is vanadic anhydride, ceria, tungstic acid and neodymia, and quality accounting is 1 ~ 10%；The SCO
The structural material of de- dioxin catalyst is silica, alchlor, calcium oxide, and quality accounting is 1 ~ 8%.
5. a kind of combined denitration according to claim 4 takes off the integrative coordinated processing equipment of dioxin, it is characterised in that: institute
The SCO stated takes off dioxin catalyst components, is in terms of 100% by quality summation, the content of each component is as follows:
TiO280~90%；
V2O50.1~5%；
CeO20.1~5%；
WO33~8%；
Nd2O30.1~5%；
SiO23~5%；
Al2O30.1~1%；
CaO 0.1~1%。
6. a kind of combined denitration according to claim 1 takes off the integrative coordinated processing equipment of dioxin, it is characterised in that: institute
The sealing element stated is made of one kind of pyroceram fibre cotton, cellucotton carbon steel, stainless steel elastic slice.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430289A (en) * | 2022-10-13 | 2022-12-06 | 清华大学 | Method for removing nitrogen oxides and dioxins in flue gas, catalyst and preparation method of catalyst |
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|---|---|---|---|---|
| JP2000070712A (en) * | 1998-06-19 | 2000-03-07 | Mitsubishi Heavy Ind Ltd | Waste gas treatment catalyst, treatment of waste gas and apparatus therefor |
| JP2004130179A (en) * | 2002-10-09 | 2004-04-30 | Mitsubishi Chemical Engineering Corp | Catalyst and method for decomposing chlorinated organic compound |
| CN104801296A (en) * | 2015-04-13 | 2015-07-29 | 宜兴市宜刚环保工程材料有限公司 | Novel dioxin removing catalyst and preparation method thereof |
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2019
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000070712A (en) * | 1998-06-19 | 2000-03-07 | Mitsubishi Heavy Ind Ltd | Waste gas treatment catalyst, treatment of waste gas and apparatus therefor |
| JP2004130179A (en) * | 2002-10-09 | 2004-04-30 | Mitsubishi Chemical Engineering Corp | Catalyst and method for decomposing chlorinated organic compound |
| CN104801296A (en) * | 2015-04-13 | 2015-07-29 | 宜兴市宜刚环保工程材料有限公司 | Novel dioxin removing catalyst and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430289A (en) * | 2022-10-13 | 2022-12-06 | 清华大学 | Method for removing nitrogen oxides and dioxins in flue gas, catalyst and preparation method of catalyst |
| CN115430289B (en) * | 2022-10-13 | 2024-03-05 | 清华大学 | Method for removing nitrogen oxides and dioxins in flue gas, catalyst and preparation method of catalyst |
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