CN107029526A - A kind of incineration tail gas denitration advanced treatment process integrated with Tuo bioxin - Google Patents
A kind of incineration tail gas denitration advanced treatment process integrated with Tuo bioxin Download PDFInfo
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- CN107029526A CN107029526A CN201710304597.2A CN201710304597A CN107029526A CN 107029526 A CN107029526 A CN 107029526A CN 201710304597 A CN201710304597 A CN 201710304597A CN 107029526 A CN107029526 A CN 107029526A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 64
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 52
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 18
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 9
- 239000003518 caustics Substances 0.000 claims abstract description 8
- 238000007146 photocatalysis Methods 0.000 claims abstract description 8
- 230000001699 photocatalysis Effects 0.000 claims abstract description 8
- 239000003513 alkali Substances 0.000 claims abstract description 6
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims abstract description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 20
- 239000003054 catalyst Substances 0.000 claims description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- 238000011068 loading method Methods 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 3
- 231100000719 pollutant Toxicity 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 claims description 2
- 231100000252 nontoxic Toxicity 0.000 claims description 2
- 230000003000 nontoxic effect Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000002912 waste gas Substances 0.000 abstract description 6
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 229910002651 NO3 Inorganic materials 0.000 abstract description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000002153 concerted effect Effects 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 150000003254 radicals Chemical class 0.000 abstract description 2
- 230000002079 cooperative effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 11
- 238000004056 waste incineration Methods 0.000 description 8
- 238000005201 scrubbing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 125000001477 organic nitrogen group Chemical group 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 benzene organic compounds Chemical class 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 235000015096 spirit Nutrition 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
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
- B01D53/323—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
-
- 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
- B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
-
- 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
-
- 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
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/806—Electrocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/122—Gaseous reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention belongs to exhaust-gas treatment field, it is related to a kind of out of stock advanced treatment process integrated with Tuo bioxin of incineration tail gas.A kind of out of stock advanced treatment process integrated with Tuo bioxin of incineration tail gas, enter high-energy discharge reactor after the incineration tail gas of nitrogen-containing oxide and bioxin is mixed with ozone and carry out electrochemical catalysis, photocatalysis and ozone cooperative effect processing, tail gas after processing further removes denitrification into caustic scrubber, so as to be removed while realizing nitrogen oxides and bioxin.The present invention integrates electrochemical catalysis, photocatalysis and ozone catalytic, processing rotary kiln incineration tail gas nitrogen oxide and bioxin, realizes multiple concerted catalysis, can greatly improve the density of free radical, can thoroughly decompose bioxin, while NO is oxidized into NO2, it is further that nitrogen oxides changing into nitrate removal purification efficiency is high, easy to operate that the waste gas after processing passes through alkali cleaning.
Description
Technical field
The invention belongs to exhaust-gas treatment field, it is related to a kind of incineration tail gas denitration depth science and engineering integrated with de- bioxin
Skill.
Background technology
A large amount of solid waste are also easy to produce in chemical industry production process, for example：Rectifying still is residual, centrifuge mother liquor, useless activity
Charcoal, biochemical sludge etc., largely belong to dangerous solid waste and are centrally disposed, it is necessary to send dangerous waste to dispose center.But with dangerous waste amount day
Benefit increases, and existing dangerous waste disposal center processing ability is substantially not enough, and enterprise's dangerous waste processing outlet turns into the one of puzzlement enterprise development
Hang-up.
The self-built incinerator of increasing enterprise handles the dangerous waste of itself generation, on the one hand alleviates in current dangerous waste disposal
The load of the heart, on the other hand, dangerous waste Bu Chu enterprises reduce the wind that the secondary pollutions such as leakage are there may be in dangerous waste transportation
Danger.Most of chemical enterprise, for example：Containing materials such as chlorine and organic nitrogens in agricultural chemicals, medicine etc., its dangerous waste, in burning process
Tail gas in can containing nitrogen oxides He the pollutant such as dioxin.Its normal handling process is as follows：
Rotary kiln --- dual firing chamber's --- SNCR (denitration) --- chilling --- dry type depickling --- bag-type dust --- alkali
Wash --- blower fan --- chimney.
Dangerous waste incinerator requires that dual firing chamber's incineration temperature is more than 1100 DEG C, wherein can produce nitrogen oxygen except organic nitrogen itself is burned
Outside compound, the N2 in air can also generate nitrogen oxides on this condition, from SNCR denitration from the point of view of the control measure of current tail gas
Effect only has 50%, it is difficult to reach emission request, most enterprises use SCR (catalytic denitration) technique, but operating cost is high, catalysis
The problems such as agent is easily poisoned, tail gas nitrogen oxide is unable to stably reaching standard.
Bioxin is many benzene organic compounds, and it is the material of severe toxicity, and chloride waste material is produced in combustion.Two
Evil heroic spirits body is decomposed more than 700 DEG C, and flue gas has a small amount of synthesis again at 500~200 DEG C.According to Thermal Power Engineering system of Tsing-Hua University
Qian Yuanji et al. (《The working condition and control strategy of waste incineration Zhong bioxin》) research show , bioxin control process bags
The stage of being initially generated, pyrolytic stage and later stage synthesis three phases are included, wherein chilling can reduce the yield of bioxin, do
The activated carbon sprayed into formula depickling can also handle generation bioxin on a small quantity, but the discharge of , bioxin according to the actual fact is dense
Degree still causes anxiety, although can reach《Dangerous waste incineration contamination control standard》(GB18484-2011) 0.5ng/m3Mark
Standard, but as what exhaust emissions was required increasingly increases, especially new discharge standard《Dangerous waste incineration contamination control mark
It is accurate》(GB18484-2014) concentration of emission≤0.1ng/m3 of the concentration of nitrogen oxides≤400mg/m3 , bioxin in.
Therefore, the integration removing treatment technology of the new denitration of exploitation and Tuo bioxin, for entering in rotary kiln exhaust gas
The denitration of row depth and Chu bioxin are significant.
The content of the invention
The technical problem to be solved in the invention is：For nitrogen-containing oxide and Er Evil in current rotary kiln incineration tail gas
The treatment technology efficiency of English is low, cost is high, fluctuation of service the problems such as, and can stablize, efficiently at low cost there is provided one kind
Rotary kiln incineration nitrogen oxide in tail gas is handled He the technique of bioxin.
A kind of out of stock advanced treatment process integrated with Tuo bioxin of incineration tail gas, including by nitrogen-containing oxide and Er Evil
The incineration tail gas of English enters high-energy discharge reactor and carries out electrochemical catalysis, photocatalysis and ozone cooperative work after being mixed with ozone
With processing, the tail gas after processing further removes denitrification into caustic scrubber, so as to realize nitrogen oxides and bioxin
While remove.
Described incineration tail gas main component is：Nitrogen oxides and bioxin etc..
As a preference of the present invention, the electrode of described high-energy discharge reactor is made up of high-pressure side and low-pressure end, high pressure
Hold as 0.1~0.4mm of diameter titaniums silk, low-pressure end is the hollow metal pipe of inwall loaded optic catalyst；Incineration tail gas and ozone
The mixed gas of composition from hollow metal circular tube by carrying out, the high energy particle on the one hand produced by high-energy discharge reactor with
The photochemical catalyst and additional ozone cooperative of its ultraviolet optical drive excited are degraded to pollutant direct oxidation, are on the other hand produced
Active particle including O, OH further decomposes into nontoxic compound to contaminant molecule.
As a preference of the present invention, the photochemical catalyst of wall loading is selected from high-field electrode：TiO2/Ni、TiO2/Pt、SnO/
One kind in Ni, SnO/Pt.
As a preference of the present invention, described high-energy discharge reactor assembly frequency continuously adjustabe, frequency range is 1~
1000Hz, 1~3Kw of power bracket
As a preference of the present invention, the amount of described mixing ozone is 5%~10% (V/V) of incineration tail gas total amount.
As a preference of the present invention, 2~4m of sprinkle density of described caustic scrubber3/(m2, h), the alkali lye used is selected from
NaOH, Ca (OH) 2 or KOH solution, the concentration of lye 8-15%wt used, preferably 10wt%.
A kind of device for being used to carry out the out of stock advanced treating integrated with Tuo bioxin of incineration tail gas, is mainly occurred by ozone
Device, gas mixer system, high capacity power source, reactor assembly, the electrode composition of inwall coating photochemical catalyst；Ozone generator with
Connected between gas mixing system by flanged (FLGD) pipeline, connection tail gas admission line in gas mixer system one end is another
Hold Ligature device system；Some electrodes are set in reactor assembly；Electrode is made up of low-pressure end and high-pressure side, and low-pressure end is
Inwall coats the hollow metal pipe of photochemical catalyst, and high-pressure side is the titanium silk of insertion die, and pipe inside leads to for the air-flow of tail gas
Road, tail gas is processed in gas channel；Reactor assembly collectively forms high-energy discharge reactor with high capacity power source, therebetween
Connected by high-tension bus-bar；The gas vent of reactor assembly connects the air inlet of the caustic scrubber of next step by pipeline.
The described a diameter of 0.1~0.4mm of high-pressure side titanium silk.
Described low-pressure end material is 316L stainless steels, and the photochemical catalyst of its interior wall loading is selected from：TiO2/Ni、TiO2/Pt、
One kind in SnO/Ni, SnO/Pt.
Described gas mixer internal system is provided with some blast fences for making gas produce baffling.
Beneficial effect：
1st, the present invention integrates electrochemical catalysis, photocatalysis and ozone catalytic, handles rotary kiln incineration tail gas nitrogen oxygen
Compound and bioxin, realize multiple concerted catalysis, can greatly improve the density of free radical, can thoroughly decompose bioxin,
NO is oxidized to NO simultaneously2, the waste gas after processing is by alkali cleaning further by nitrogen oxides changing into nitrate removal purification efficiency
It is high, easy to operate.Exhaust emissions after processing meets《Dangerous waste incineration contamination control standard》(GB18484-2014) arranged in
Put standard.
2nd, the active high, long lifespan of support type photocatalysis high-field electrode.
3rd, the anti-load impact ability of device is strong, and operation stability is high, the low advantage of operating cost.
Brief description of the drawings
Denitration and Tuo bioxin integrated apparatus schematic diagrames that Fig. 1, the present invention are used
Wherein, 1 is ozone generator, and 2 be gas mixer system, and 3 be high capacity power source, 4 reactor assemblies, and 5 be inwall
Coat the electrode of photochemical catalyst.
Fig. 2, the profile for reactor assembly
Some electrodes 5 that photochemical catalyst is coated with inwall, inwall coating light are provided with reactor assembly 4 as seen from Figure 2
The electrode 5 of catalyst is made up of the titanium silk of hollow circular tube and die.
Embodiment
Xuzhou chemical enterprise tail gas from incinerator：Nitrogen oxides 450mg/m3, bioxin 0.35ng/m3。
A kind of incineration tail gas denitration advanced treatment process integrated with Tuo bioxin, by nitrogen-containing oxide and bioxin
Incineration tail gas enters high-energy discharge reactor (Fig. 1, similarly hereinafter) after being mixed with ozone and carries out electrochemical catalysis, photocatalysis and ozone
Synergy processing, the tail gas after processing further removes denitrification into caustic scrubber so that realize nitrogen oxides and
Removed while bioxin.
Following examples are handled Xuzhou chemical enterprise tail gas from incinerator according to the method described above：
Embodiment 1
The photochemical catalyst of wall loading is TiO in high-energy discharge reactor assembly low-field electrode2/ Ni, high-pressure side titanium silk diameter
For 0.2mm, frequency is 500Hz, power 3Kw；The amount for mixing ozone is 10% (V/V) of waste gas total amount, and the spray of scrubbing tower is close
Spend 2m3/(m2, h), use 10wt% NaOH solution.
Coating cloud nitrogen oxides 90mg/m after processing3, bioxin 0.0252ng/m3, discharge meets《Dangerous waste incineration is dirty
Contaminate control standard》(GB18484-2014).
Embodiment 2
The photochemical catalyst of wall loading is TiO in high-energy discharge reactor assembly low-field electrode2/ Pt, high-pressure side titanium silk diameter
For 0.4mm, frequency is 1000Hz, power 1Kw；The amount for mixing ozone is 5% (V/V) of waste gas total amount, and the spray of scrubbing tower is close
Spend 4m3/(m2, h), use 8wt% Ca (OH)2Solution.
Coating cloud nitrogen oxides 110mg/m after processing3, bioxin 0.0312ng/m3, discharge meets《Dangerous waste incineration is dirty
Contaminate control standard》(GB18484-2014).
Embodiment 3
The photochemical catalyst of wall loading is SnO/Ni in high-energy discharge reactor assembly low-field electrode, and high-pressure side titanium silk is a diameter of
0.1mm, frequency is 600Hz, power 2Kw；The amount for mixing ozone is 8% (V/V) of waste gas total amount, the sprinkle density of scrubbing tower
3m3/(m2, h), use 12wt% KOH solution.
Nitrogen oxides 100mg/m after processing3, bioxin 0.0282ng/m3, discharge meets《Dangerous waste incineration pollution control
Standard processed》(GB18484-2014).
Embodiment 4
The photochemical catalyst of wall loading is SnO/Pt in high-energy discharge reactor assembly low-field electrode, and high-pressure side titanium silk is a diameter of
0.3mm, frequency is 800Hz, power 3Kw；The amount for mixing ozone is 10% (V/V) of waste gas total amount, the sprinkle density of scrubbing tower
3m3/(m2, h), use 10wt% NaOH solution.
Nitrogen oxides 80mg/m after processing3, bioxin 0.0232ng/m3, discharge meets《Dangerous waste incineration pollution control
Standard processed》(GB18484-2014).
Claims (10)
1. a kind of out of stock advanced treatment process integrated with Tuo bioxin of incineration tail gas, it is characterised in that including by nitrogen-containing oxide
And the incineration tail gas of bioxin mixed with ozone after enter high-energy discharge reactor and carry out electrochemical catalysis, photocatalysis and smelly
The processing of oxygen synergy, the tail gas after processing further removes denitrification into caustic scrubber so that realize nitrogen oxides with
Removed while Ji bioxin.
2. the out of stock advanced treatment process integrated with Tuo bioxin of incineration tail gas according to claim 1, it is characterised in that
The electrode of described high-energy discharge reactor is made up of high-pressure side and low-pressure end, and high-pressure side is 0.1~0.4mm of diameter titaniums silk, low
Pressure side is the hollow metal pipe of inwall loaded optic catalyst；The mixed gas that incineration tail gas and ozone are constituted is from hollow round metal
By carrying out in pipe, the photocatalysis for the ultraviolet optical drive that the high energy particle on the one hand produced by high-energy discharge reactor is excited with it
Agent and additional ozone cooperative are degraded to pollutant direct oxidation, on the other hand produce the active particle including O, OH
Nontoxic compound is further decomposed into contaminant molecule.
3. the out of stock advanced treatment process integrated with Tuo bioxin of incineration tail gas according to claim 2, it is characterised in that
The photochemical catalyst of the low-pressure end hollow metal round tube inner wall load of high-field electrode is selected from：TiO2/Ni、TiO2/Pt、SnO/Ni、SnO/
One kind in Pt.
4. the out of stock advanced treatment process integrated with Tuo bioxin of incineration tail gas according to claim 1, it is characterised in that
Described high-energy discharge reactor frequency continuously adjustabe, frequency range is 1~1000Hz, 1~3Kw of power bracket.
5. the out of stock advanced treatment process integrated with Tuo bioxin of incineration tail gas according to claim 1, it is characterised in that
The amount of the ozone of mixing is 5%~10% (V/V) of incineration tail gas total amount.
6. the out of stock advanced treatment process integrated with Tuo bioxin of incineration tail gas according to claim 1, it is characterised in that
The sprinkle density of described caustic scrubber is 2~4m3/(m2, h), the alkali lye used is selected from NaOH, Ca (OH)2Or KOH solution, alkali
Liquid concentration is 8-15%wt.
7. the out of stock advanced treatment process integrated with Tuo bioxin of incineration tail gas according to claim 6, it is characterised in that
Described concentration of lye is 10%wt.
8. a kind of be used to carry out the device of the out of stock advanced treating integrated with Tuo bioxin of incineration tail gas, it is characterised in that mainly by
Ozone generator (1), gas mixer system (2), high capacity power source (3), reactor assembly (4), inwall coating photochemical catalyst
Electrode (5) is constituted；It is connected between ozone generator and gas mixing system (2) by flanged (FLGD) pipeline, gas mixer system
System (2) one end connection tail gas admission line, other end Ligature device system (4)；Some electricity are set in reactor assembly (4)
Pole (5)；Electrode (5) is made up of low-pressure end and high-pressure side, and low-pressure end is the hollow metal pipe that inwall coats photochemical catalyst, high pressure
Hold to insert the gas channel inside the titanium silk of die, pipe for tail gas, tail gas is processed in gas channel；Reactor assembly
(4) high-energy discharge reactor is collectively formed with high capacity power source (3), is connected by high-tension bus-bar therebetween；Reactor assembly (4)
Gas vent pass through pipeline connect next step caustic scrubber air inlet.
9. the device according to claim 8 for being used to carry out the out of stock advanced treating integrated with Tuo bioxin of incineration tail gas,
It is characterized in that the described a diameter of 0.1~0.4mm of high-pressure side titanium silk.
10. the device according to claim 8 for being used to carry out the out of stock advanced treating integrated with Tuo bioxin of incineration tail gas,
It is characterized in that described low-pressure end material is 316L stainless steels, the photochemical catalyst of its interior wall loading is selected from：TiO2/Ni、TiO2/
One kind in Pt, SnO/Ni, SnO/Pt.
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Application publication date: 20170811 |