CN109173663A - A kind of off-gas oxidizing processing method - Google Patents
A kind of off-gas oxidizing processing method Download PDFInfo
- Publication number
- CN109173663A CN109173663A CN201811207770.8A CN201811207770A CN109173663A CN 109173663 A CN109173663 A CN 109173663A CN 201811207770 A CN201811207770 A CN 201811207770A CN 109173663 A CN109173663 A CN 109173663A
- Authority
- CN
- China
- Prior art keywords
- gas
- oxidizing
- exhaust gas
- promotor
- oxidation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- 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
- B01D53/14—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 absorption
-
- 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
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/802—Visible light
Landscapes
- 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)
- Dispersion Chemistry (AREA)
- Toxicology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of off-gas oxidizing processing methods, including carrying out multiple oxidation processes after first carrying out washing process, finally carry out alkali cleaning processing, the oxidation processes, which refer in the oxidizing tower for allowing exhaust gas to enter the promotor for being 0.5~1.0 part with ion ozone gas and parts by volume, carries out oxidation reaction, and the promotor includes at least FeOOH, Al2O3、TiO2One of.The present invention, which is directly reacted by ion ozone gas with the pollutant in exhaust gas, generates a large amount of CO2、H2O and harmless carboxylic acid RCOOH, ion ozone gas and booster response generate a large amount of hydroxyl radical free radical (OH), and the pollutant indirect reaction in hydroxyl radical free radical (OH) and exhaust gas generates a large amount of CO2、H2O and harmless carboxylic acid RCOOH, harmless carboxylic acid RCOOH are reacted with ion ozone gas generates a large amount of hydroxyl radical free radical (OH), promotes film so as to form one layer of oxidation, without persistently adding promotor, need to only add 1~2 time.
Description
Technical field
The present invention relates to technical field of waste gas treatment, and in particular to a kind of off-gas oxidizing processing method.
Background technique
With the development of the social economy, industrial enterprise is more and more, exhaust gas discharge is also gradually increased.Because of exhaust gas discharge meeting pair
Environment causes irremediable pollution, so can all be pre-processed before exhaust gas discharge.Existing waste gas processing method is main
Including combustion method, absorption process, absorption method, bioanalysis, photocatalytic method, chemical oxidization method.
Combustion method is suitable for the purification of high concentration, small air quantity exhaust gas, and contains halogen, nitrogen and element sulphur in burning
Exhaust gas when, be also easy to produce secondary pollution substance dioxin, oxynitrides and oxygen sulfur compound.
Absorption process is the method for absorb to exhaust gas removal using water or chemical absorbing liquid, and this method is closed in design operation
Removal efficiency is very high in the case where reason, and running management is convenient, but high to equipment and operational management requirement, and can only dissolve
It can be just efficiently removed in absorbing liquid or the pollutant that can be reacted with absorbing liquid.
Absorption method is to be adsorbed using adsorbent (such as active carbon, hydrophobic molecule sieve) etc. to the pollutant in exhaust gas,
This method equipment is simple, removal effect is good, is chiefly used in the final stage processing of purification process, but to high-concentration waste gas treatment effeciency
It is low, take up a large area, the disadvantages of vapour lock is big, adsorbent need to be replaced often, and the gas after adsorbent desorption be difficult to collect and
It is final to flow back in atmosphere again, it is a kind of halfway solution route.
Bioanalysis is a kind of more treatment process of Recent study, and the most prominent advantage of this method is that processing cost is low
It is honest and clean, substantially without secondary pollution.It is excellent with what low energy consumption although bioanalysis effect in purifying low-concentration organic pollutant is obvious
Point, but that there are vapour locks is big, degradation rate is slow, equipment volume is huge, the influence of vulnerable to pollution object concentration and temperature, and the method is only
Suitable for the processing of hydrophily and easily biological-degradable substance, to the processing of hydrophobicity and recalcitrant substance, there is also certain difficulties
Degree, and occupation area of equipment is very big.
Chemical oxidization method is the oxidation by oxidant, and organic matter difficult to degrade is made to be converted into easily biodegradable organics,
Or by organic matter exhaustive oxidation be CO and H2O method.Common oxidant includes that ozone oxidation agent, Fenton oxidation agent, light are urged
Agent etc., relatively with other exhaust-gas treatment methods, reaction condition is mild, is not required to high temperature and pressure, and equipment is simple, can individually handle,
It can also be with other methods Combined Treatment.Especially ozone oxidation agent is widely used, and the oxidation rate of ozone oxidation agent is slow, oxygen
For rate 90% or so, there are also 10% exhaust gas to be discharged into air, with having reached discharge standard, but still can be to air
Certain pollution is caused, it for a long time, only can be increasingly severe.
Summary of the invention
The purpose of the present invention is to provide the off-gas oxidizing processing methods that one kind can propose oxygenation efficiency.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of off-gas oxidizing processing method, including multiple oxidation processes are carried out after first carrying out washing process, finally carry out alkali
Wash processing, the oxidation processes refer to the promotor that allow exhaust gas to enter be 0.5~1.0 part with ion ozone gas and parts by volume
Oxidizing tower in carry out oxidation reaction, the promotor include at least FeOOH, Al2O3、TiO2One of.
Further, the ion ozone gas is the ozone with positive charge point generated by positive charge ozone generator
Sub- gas.
Further, the exhaust gas is entered in oxidizing tower with 8000~12000 air quantity per hour.
Further, the pH value in the oxidizing tower is greater than 4.
Further, the multiple oxidation processes of the row refer to 2~3 oxidation processes of carry out.
The present invention, which is directly reacted by ion ozone gas with the pollutant in exhaust gas, generates a large amount of CO2、H2O and harmless
Carboxylic acid RCOOH, ion ozone gas and booster response generate a large amount of hydroxyl radical free radical (OH), hydroxyl radical free radical (OH) and useless
Pollutant indirect reaction in gas generates a large amount of CO2、 H2O and harmless carboxylic acid RCOOH, harmless carboxylic acid RCOOH and ion ozone
Gas reaction generates a large amount of hydroxyl radical free radical (OH), promotes film so as to form one layer of oxidation, without persistently adding promotor,
It need to only add 1~2 time.Hydroxyl radical free radical (OH) oxidation reaction speed is fast, and respond is strong, and speed is fast, and it is anti-can to cause chain
Organic matter should be made thoroughly to degrade.The oxygenation efficiency of the oxidation reaction provided through the invention is 95% or more.
Detailed description of the invention
Fig. 1 is that ion ozone gas of the invention and promotor form loop chain type and react schematic diagram.
Marked in the figure: hv is promotor, O3Ion ozone gas, O2RH is the organic compound of peroxide.
Specific embodiment
Embodiment 1
Off-gas oxidizing processing method provided in this embodiment, includes the following steps:
(1) washing process: exhaust gas being pumped into water washing cleaning tower with 10000 air quantity per hour and carries out washing process, water
It washes in purifying column and contacts filler filled with porous high-efficiency, the contacting efficiency of water and exhaust gas can be improved, so that absorption efficiency can be improved；
(2) oxidation processes: the exhaust gas after washing process being fed sequentially into 2 oxidizing towers and carries out oxidation processes, oxidation
The bottom of tower is equipped with aeration tube, and the general pipeline of aeration tube is connect with the gas outlet of positive charge ozone generator, positive charge ozone hair
Raw device inputs ion ozone gas into oxidizing tower with 1.5kg per hour, and the promotor of 0.8 side is filled in the oxidizing tower
Al2O3, and make the interior pH value 5 of oxidizing tower, accelerant A l2O3With ion ozone gas O3 +Reaction generates a large amount of hydroxyl certainly
By base OH, when exhaust gas enters in oxidizing tower, with the ion ozone gas O in oxidizing tower3 +Directly reaction generates a large amount of CO2、
H2O and RCOOH generates a large amount of CO with hydroxyl radical free radical OH indirect reaction2、H2O and RCOOH, and product RCOOH and ion are smelly
Carrier of oxygen O3 +It can also react again and generate hydroxyl radical free radical OH, the promotor need to only add 2 times, after adding promotor
Oxidation can be formed in oxidizing tower promotes film；
(3) alkali cleaning is handled: the exhaust gas after oxidation-treated is input into alkali cleaning purifying column, is discharged after carrying out acid-base neutralization
Into air.
Embodiment 2
Off-gas oxidizing processing method provided in this embodiment, includes the following steps:
(1) washing process: exhaust gas being pumped into water washing cleaning tower with 8000 air quantity per hour and carries out washing process, washing
Filler is contacted filled with porous high-efficiency in purifying column, the contacting efficiency of water and exhaust gas can be improved, so that absorption efficiency can be improved；
(2) oxidation processes: the exhaust gas after washing process being fed sequentially into 3 oxidizing towers and carries out oxidation processes, oxidation
The bottom of tower is equipped with aeration tube, and the general pipeline of aeration tube is connect with the gas outlet of positive charge ozone generator, positive charge ozone hair
Raw device inputs ion ozone gas into oxidizing tower with 1.0kg per hour, and the promotor of 0.5 side is filled in the oxidizing tower
TiO2, and make the interior pH value 6 of oxidizing tower, promotor TiO2With ion ozone gas O3 +Reaction generates a large amount of hydroxyl certainly
By base OH, when exhaust gas enters in oxidizing tower, with the ion ozone gas O in oxidizing tower3 +Directly reaction generates a large amount of CO2、
H2O and RCOOH generates a large amount of CO with hydroxyl radical free radical OH indirect reaction2、 H2O and RCOOH, and product RCOOH and ion are smelly
Carrier of oxygen O3 +It can also react again and generate hydroxyl radical free radical OH, the promotor need to only add 1 time, after adding promotor
Oxidation can be formed in oxidizing tower promotes film；
(3) alkali cleaning is handled: the exhaust gas after oxidation-treated is input into alkali cleaning purifying column, is discharged after carrying out acid-base neutralization
Into air.
Embodiment 3
Off-gas oxidizing processing method provided in this embodiment, includes the following steps:
(1) washing process: exhaust gas being pumped into water washing cleaning tower with 12000 air quantity per hour and carries out washing process, water
It washes in purifying column and contacts filler filled with porous high-efficiency, the contacting efficiency of water and exhaust gas can be improved, so that absorption efficiency can be improved；
(2) oxidation processes: the exhaust gas after washing process being fed sequentially into 2 oxidizing towers and carries out oxidation processes, oxidation
The bottom of tower is equipped with aeration tube, and the general pipeline of aeration tube is connect with the gas outlet of positive charge ozone generator, positive charge ozone hair
Raw device inputs ion ozone gas into oxidizing tower with 1.8kg per hour, and the promotor of 01.0 side is filled in the oxidizing tower
FeOOH, and make the interior pH value 7 of oxidizing tower, promotor FeOOH and ion ozone gas O3 +Reaction generates a large amount of hydroxyl
Free radical OH, when exhaust gas enters in oxidizing tower, with the ion ozone gas O in oxidizing tower3 +Directly reaction generates a large amount of
CO2、H2O and RCOOH generates a large amount of CO with hydroxyl radical free radical OH indirect reaction2、H2O and RCOOH, and product RCOOH with from
Sub- ozone gas O3 +It can also react again and generate hydroxyl radical free radical OH, the promotor need to only add 2 times, add promotor
Oxidation can be formed in oxidizing tower afterwards promotes film；
(3) alkali cleaning is handled: the exhaust gas after oxidation-treated is input into alkali cleaning purifying column, is discharged after carrying out acid-base neutralization
Into air.
Embodiment 4
The present embodiment is substantially the same manner as Example 1, only the accelerant A l by addition in oxidizing tower2O3It is changed to
Al2O3And TiO2Mixture.
Embodiment 5
The present embodiment is substantially the same manner as Example 1, only the accelerant A l by addition in oxidizing tower2O3It is changed to
Al2O3With the mixture of FeOOH.
Embodiment 6
The present embodiment is substantially the same manner as Example 1, only the accelerant A l by addition in oxidizing tower2O3It is changed to TiO2
With the mixture of FeOOH.
Embodiment 7
The present embodiment is substantially the same manner as Example 1, only the accelerant A l by addition in oxidizing tower2O3It is changed to
Al2O3、TiO2With the mixture of FeOOH.
The exhaust gas of the gas outlet of oxidizing tower and alkali cleaning purifying column to Examples 1 to 7 carries out sample detecting.
Different exhaust gas materials is placed on to the inlet of water scrubber, in the gas outlet of oxidizing tower and alkali cleaning purifying column to useless
Gas concentration is detected.
Testing result is shown in Table 1.
The corresponding concentration of the different exhaust gas materials of table 1
| Serial number | Name of material | Initial concentration | Water washing cleaning tower | Oxidizing tower | Alkali cleaning purifying column |
| 1 | Tetrahydrofuran | 120 | 36 | 0 | 0 |
| 2 | Dioxane | 140 | 60 | 0 | 0 |
| 3 | Toluene | 86 | 35 | 0 | 0 |
| 4 | Methyl ether | 225 | 85 | 0 | 0 |
| 5 | Methylene chloride | 350 | 108 | 0 | 0 |
| 6 | Mixed gas 1 | 420 | 120 | 12 | 0 |
| 7 | Mixed gas 2 | 365 | 115 | 8 | 0 |
In the mixed gas 1 and mixed gas 2 containing DMF, EA, ethyl alcohol, it is strong deposit, methyl isopropyl acid, methylene chloride, four
A variety of harmful materials such as hydrogen furans.
The above is only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any
The transformation and replacement carried out based on technical solution provided by the present invention and inventive concept should all be covered in protection model of the invention
In enclosing.
Claims (5)
1. a kind of off-gas oxidizing processing method, including multiple oxidation processes are carried out after first carrying out washing process, finally carry out alkali cleaning
Processing, it is characterised in that: the oxidation processes refer to that allowing exhaust gas to enter with ion ozone gas and parts by volume is 0.5~1.0
Oxidation reaction is carried out in the oxidizing tower of the promotor of part, the promotor includes at least one of FeOOH, Al2O3, TiO2.
2. off-gas oxidizing processing method according to claim 1, it is characterised in that: the ion ozone gas is by positive electricity
The ozone molecule gas with positive charge that lotus ozone generator generates.
3. off-gas oxidizing processing method according to claim 1, it is characterised in that: the exhaust gas be with per hour 8000~
12000 air quantity enter in oxidizing tower.
4. off-gas oxidizing processing method according to claim 1, it is characterised in that: the pH value in the oxidizing tower is greater than 4.
5. off-gas oxidizing processing method according to claim 1, it is characterised in that: the multiple oxidation processes of row are fingering
2~3 oxidation processes of row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811207770.8A CN109173663A (en) | 2018-10-17 | 2018-10-17 | A kind of off-gas oxidizing processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811207770.8A CN109173663A (en) | 2018-10-17 | 2018-10-17 | A kind of off-gas oxidizing processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109173663A true CN109173663A (en) | 2019-01-11 |
Family
ID=64945601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811207770.8A Pending CN109173663A (en) | 2018-10-17 | 2018-10-17 | A kind of off-gas oxidizing processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109173663A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202751950U (en) * | 2012-07-24 | 2013-02-27 | 徐州市龙泰臭氧设备制造有限公司 | Waste gas oxidation treatment system |
| CN204582934U (en) * | 2015-04-21 | 2015-08-26 | 山东格林检测股份有限公司 | A kind for the treatment of apparatus of organic exhaust gas |
| CN105478136A (en) * | 2015-12-24 | 2016-04-13 | 浙江大学 | Industrial organic waste gas catalytic degradation catalyst cooperated with low-temperature plasma, and preparation method and application of catalyst |
-
2018
- 2018-10-17 CN CN201811207770.8A patent/CN109173663A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202751950U (en) * | 2012-07-24 | 2013-02-27 | 徐州市龙泰臭氧设备制造有限公司 | Waste gas oxidation treatment system |
| CN204582934U (en) * | 2015-04-21 | 2015-08-26 | 山东格林检测股份有限公司 | A kind for the treatment of apparatus of organic exhaust gas |
| CN105478136A (en) * | 2015-12-24 | 2016-04-13 | 浙江大学 | Industrial organic waste gas catalytic degradation catalyst cooperated with low-temperature plasma, and preparation method and application of catalyst |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101391177B (en) | Gas purification method of low concentration organic compound | |
| CN206082175U (en) | Industrial waste gas treatment column | |
| CN105536458A (en) | Device for purifying organic waste gas by using oxidant and ultraviolet light and treatment method | |
| CN102772987B (en) | Waste gas oxidation treatment system | |
| CN108404621A (en) | The Deodor method and device generated in poultry of dying of illness innocent treatment procedure | |
| CN104258726B (en) | A kind of device of photocatalysis treatment volatile organic matter | |
| CN204247050U (en) | A kind of sludge drying produces foul gas UV photodissociation cleaning equipment | |
| CN106178873A (en) | Waste gas processing method in the production of a kind of sodium hydrosulfite and waste gas treatment equipment | |
| CN108704465A (en) | Vacuum ultraviolet cooperates with effective chlorine for the method and device of flue gas and desulfurizing and denitrifying | |
| CN106989407A (en) | NOx cancellation elements and method in a kind of flue gas | |
| CN105498476A (en) | VOCs (volatile organic compounds) tail gas treatment technology and system | |
| CN107715691A (en) | A kind of photocatalysis aqueous vapor treating column | |
| CN111760452A (en) | Experimental device for testing performance of photocatalytic ozone synergistic catalytic degradation of volatile organic gas and operation process thereof | |
| CN107670478A (en) | A kind of waste water station waste gas treatment process | |
| CN206762623U (en) | A kind of novel liquid-phase oxidative absorption denitrification apparatus | |
| CN105498480A (en) | Ultraviolet radiation enhancement based method and device for simultaneous desulfurization, denitrification and particulate removal of pypocholoride | |
| CN106853329B (en) | Method and device for generating hydroxyl free radical by ozone for low-temperature flue gas denitration | |
| CN204865493U (en) | A clean system for stench waste gas | |
| CN110559827B (en) | Treatment process of papermaking waste gas | |
| CN115722052B (en) | Device and method for removing volatile organic compounds in industrial waste gas | |
| CN109173663A (en) | A kind of off-gas oxidizing processing method | |
| CN214598185U (en) | Waste gas treatment device for landfill leachate treatment and submerged combustion | |
| CN107081036B (en) | Ultraviolet activated ozone oxidation VOCs dust removal purification device and method | |
| CN216321080U (en) | Device suitable for acid-base waste gas treatment and ozonolysis organic waste gas | |
| CN102824831B (en) | The box Photoreactor of ultraviolet photolysis process waste gas and method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190111 |