CN109289467A - Multistage composite exhaust treatment system - Google Patents
Multistage composite exhaust treatment system Download PDFInfo
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- CN109289467A CN109289467A CN201811383754.4A CN201811383754A CN109289467A CN 109289467 A CN109289467 A CN 109289467A CN 201811383754 A CN201811383754 A CN 201811383754A CN 109289467 A CN109289467 A CN 109289467A
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- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 33
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 238000012544 monitoring process Methods 0.000 claims abstract description 28
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- 238000000034 method Methods 0.000 claims abstract description 17
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003463 adsorbent Substances 0.000 claims abstract description 13
- 230000001360 synchronised effect Effects 0.000 claims abstract description 11
- 238000002211 ultraviolet spectrum Methods 0.000 claims abstract description 11
- 239000002351 wastewater Substances 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 7
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- 238000012545 processing Methods 0.000 abstract description 18
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- 241000208340 Araliaceae Species 0.000 description 1
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 229910052799 carbon Inorganic materials 0.000 description 1
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- 150000002170 ethers Chemical class 0.000 description 1
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- 235000008434 ginseng Nutrition 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
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- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
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- 229910052723 transition metal Inorganic materials 0.000 description 1
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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
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- 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
- B01D53/44—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- 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
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- 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
-
- 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
- B01D2259/806—Microwaves
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The present invention relates to gas pollutant processing techniques.The invention discloses a kind of multistage composite exhaust treatment system, including gas-filtering device, microwave photocatalytic device, gaseous oxidation device and synchronous adsorbent equipment；The microwave photocatalytic device, including reaction cavity, control unit, microwave generating unit, ozone monitoring unit, VOC monitoring unit and ultraviolet spectra monitoring unit；It is equipped with electrodeless lamp tube in the reaction cavity, is connect by pipeline with wastewater collection exhaust unit；The ozone monitoring unit, VOC monitoring unit and ultraviolet spectra monitoring unit are connect with control unit；The microwave generating unit has at least two microwave generator, and for generating strong electromagnetic wave, excitation electrodeless lamp tube generates short wave ultraviolet light；The microwave generator is connect with control unit.Exhaust treatment efficiency of the present invention is high, does not generate secondary pollution in treatment process, and there is no the security risks such as high temperature, explosion, is very suitable to the processing of vehicle repairing factory combined padding and drying system exhaust gas.
Description
Technical field
The present invention relates to field of environment engineering technology, in particular to gas pollutant processing technique, in particular to one
Kind multistage composite exhaust treatment system.
Background technique
In current environment-friendly engineering, be related to the technology of industrial waste gas processing mainly include the following types:
RTO (Regenerative Thermal Oxidizer, abbreviation RTO), heat accumulating type oxidation furnace.It is that one kind efficiently has
Machine waste gas pollution control and treatment equipment.Its principle is that combustible exhaust gas is oxidized to corresponding oxide and water at high temperature, to purify exhaust gas,
And the heat released when exhaust gas decomposes is recycled, heat recovery efficiency can achieve 95% or more.RTO main structure is by burning
The composition such as room, ceramic packing bed and switching valve.According to client's actual demand, different thermal energy way of recycling and switching valve side are selected
Formula.
Thermal accumulating incinerator is recycled using the organic exhaust gas of low concentration in thermal oxidation method processing with ceramic heat-storing bed heat exchanger
Heat.It is made of ceramic heat-storing bed, autocontrol valve, combustion chamber and control system etc..
It is mainly characterized by comprising: that the autocontrol valve of energy storage bed bottom is connected with inlet manifold and exhaust main respectively, accumulation of heat
Bed is alternately commutated by reversal valve, the high-temperature gas heat accumulation that will be come out by combustion chamber, and is preheated into the organic of energy storage bed
Exhaust gas；It is absorbed using ceramic heat-storing material, release heat；The organic exhaust gas of certain temperature (>=760 DEG C) is preheating in combustion chamber
Oxidation reaction occurs, generates carbon dioxide and water, is purified.
It is applicable in organic exhaust gas type: the hydrocarbons such as alkane, alkene, alcohols, ketone, ethers, esters, aromatic hydrocarbons, benzene class
Organic exhaust gas；
Organic matter low concentration (while meeting and being lower than 25%LFL), Wind Volume；
Containing there are many organic principles or organic principle to change frequent occurrence in exhaust gas；
Containing being easy to make the exhaust gas of catalyst poisoning or activity decay ingredient.
RCO (Regenerative Catalytic Oxidation), heat accumulating type catalytic combustion method.The method and RTO principle
The new technology to grow up in identical and nearly more than 10 year, purifying rate is high, adaptable, without secondary pollution, and it is dense to be applied to exhaust gas
It is relatively more to spend high occasion.
RCO VOCs treatment is a kind of new catalytic oxidation technologies, it has the characteristics that RTO high efficiente callback energy and urges
Catalyst is placed in the top of heat-storing material by the low-temperature working advantage for changing reaction, improves off-gas oxidizing efficiency, and heat recovery rate is high
Up to 95%.
RCO system performance is excellent to be critical that with noble metal that is dedicated, being immersed on saddle or ceramic honeycomb
Or transition-metal catalyst, oxidation occur not only to reduce fuel consumption, but also reduce equipment manufacturing cost in 250-500 DEG C of low temperature.
Now with country have begun using RCO technology replace RTO carry out organic exhaust gas purified treatment, many RTO
Equipment, which also has begun, is transformed into RCO.
Above-mentioned waste gas processing method belongs to high-temp combustion oxidizing process.Its waste gas treatment equipment is expensive, up to a hundred easily
Ten thousand initial stages investment, operation energy consumption is high, and technique controlling difficulty is big, there is certain security risk, is more suitable for the VOC of middle and high concentration
(volatile organic compounds) handles (VOC >=10000mg/m3)。
In recent years also there is the technology that some comparisons are suitble to small-scale low concentration gas processing application, UV (ultraviolet light) light
Solution, gaseous oxidation, activated carbon adsorption etc..It is UV photodissociation exhaust gas treatment technology that wherein application is more
The characteristics of UV photodissociation: it is suitble to the VOC of low concentration to handle scene (VOC≤1000mg/m3), in adequately reaction enough
Under the conditions of, it can be achieved that more satisfactory treatment effect.
UV photodissociation basic principle is with ultraviolet light photocatalyst catalytic bed, and titanium dioxide therein etc. is catalyzed shape in base
At electron hole, the electronics of oxygen molecule and hydrone is captured, generates strong oxidizing property group, negative oxygen ion and ozone, using strong
Organic pollutant oxygenolysis is water, carbon dioxide etc. by oxidisability.
Substantially all there are following several defects in existing UV photodissociation processing equipment:
Equipment work is low to waste gas humidity tolerance level, and relative humidity is generally required less than 60%；
Equipment is low to exhaust gas temperature tolerance level to be clean, and usually less than 50 DEG C；
Equipment is low to exhaust gas and dust concentration tolerance level to be processed, cannot directly wash with water, and clean-up effect is of short duration, later period dimension
It protects at high cost；
Fluorescent tube light decay speed is easy to aging fastly, and fluorescent tube wiring contact and conducting wire are oxidized easily corrosion, leads to service life only
Have 500-3000 hours, clean-up effect is not continual and steady enough；
The replacement of the auxiliaries such as fluorescent tube is cumbersome, and maintenance cost is high.
The existing UV photodissociation equipment using electrodeless lamp tube and microwave technology, low, oxygenolysis that there is also photocatalysis efficiencies is not
Abundant problem.
In short, the method or the processing of unsuitable medium-sized and small enterprises and middle low concentration gas or exhaust treatment efficiency are low,
Cost of equipment maintenance is high.
Summary of the invention
The main purpose of the present invention is to provide a kind of multistage composite exhaust treatment systems, at low concentration gas in solution
Reason problem improves exhaust treatment efficiency, reduces equipment use cost and maintenance cost.
To achieve the goals above, the one aspect of specific embodiment according to the present invention, provides a kind of multistage composite
Exhaust treatment system, including gas-filtering device, microwave photocatalytic device, gaseous oxidation device and synchronous adsorbent equipment；It is described
Gas-filtering device is connect with microwave photocatalytic device, for filtering the solid particle in exhaust gas；The microwave photocatalytic device
It is connect with gaseous oxidation device, generates UV light combined photocatalyst using microwave energy and the harmful substance in exhaust gas is handled；
The gaseous oxidation device is connected with synchronous adsorbent equipment, is aoxidized under gas phase condition to harmful substance remaining in exhaust gas
Processing；The synchronous adsorbent equipment is using active material absorption harmful substance and combines microwave energy decomposing harmful substances；
It is characterized by:
The microwave photocatalytic device, including reaction cavity, control unit, microwave generating unit, ozone monitoring unit,
VOC monitoring unit and ultraviolet spectra monitoring unit；The reaction cavity is connect by air inlet with gas-filtering device, is reacted
Cavity exhaust outlet is connect with gaseous oxidation device；It is equipped with electrodeless lamp tube in the reaction cavity, is arranged by pipeline and wastewater collection
Put unit connection；The ozone monitoring unit, VOC monitoring unit and ultraviolet spectra monitoring unit are connect with control unit；It is described
Microwave generating unit has at least two microwave generator, and for generating strong electromagnetic wave, excitation electrodeless lamp tube generates short wavelength UV
Light；The microwave generator is connect with control unit.
Further, the short wavelength UV optical wavelength≤250nm.
Further, the short wavelength UV optical wavelength range is 210~170nm.
Further, the short wavelength UV optical wavelength is 185nm.
Further, the microwave generator is magnetron.
Further, the cavity is erect-type cavity, and top is provided with spray equipment, and lower part is provided with wastewater collection row
Unit is put, the erect-type cavity lower part is connect by pipeline with wastewater collection exhaust unit.
Further, in erect-type cavity lower part, exhaust outlet is arranged on erect-type cavity top for the air inlet setting.
Further, the gas-filtering device is using the solid particle in filter cotton filtering exhaust gas.
Further, the gaseous oxidation device uses ceramic base catalytic bed, to remaining in exhaust gas under gas phase condition
Harmful substance carries out oxidation processes.
Further, described control unit is constituted using programmable logic circuit.
The invention has the advantages that exhaust treatment efficiency is high, secondary pollution is not generated in treatment process, there is no height
The security risks such as temperature, explosion.The device structure degree of modularity is high, and maintenance cost is low, is very suitable to vehicle repairing factory combined padding and drying system exhaust gas
Processing.
The present invention is described further with reference to the accompanying drawings and detailed description.The additional aspect of the present invention and excellent
Point will be set forth in part in the description, and partially will become apparent from the description below, or practice through the invention
It solves.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, specific implementation of the invention
Mode, illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the multistage composite exhaust treatment system structural schematic diagram according to the specific embodiment of the invention；
Fig. 2 is the microwave photocatalytic device structural schematic diagram according to the specific embodiment of the invention；
Fig. 3 is the gas-filtering device structural schematic diagram according to the specific embodiment of the invention；
Fig. 4 is the gaseous oxidation apparatus structure schematic diagram according to the specific embodiment of the invention；
Fig. 5 is the synchronization adsorbent equipment structural schematic diagram according to the specific embodiment of the invention.
Specific embodiment
It should be noted that in the absence of conflict, specific embodiment, embodiment in the application and therein
Feature can be combined with each other.It lets us now refer to the figures and combines the following contents the present invention will be described in detail.
In order to make those skilled in the art better understand the present invention program, below in conjunction with specific embodiment party of the present invention
Attached drawing in formula, embodiment carries out clear, complete description to the technical solution in the specific embodiment of the invention, embodiment,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Specific embodiment, embodiment, those of ordinary skill in the art institute obtained without making creative work
There are other embodiments, embodiment, should fall within the scope of the present invention.
Below by taking vehicle repairing factory combined padding and drying system exhaust-gas treatment as an example, multistage composite exhaust treatment system of the invention is retouched
It states.
Vehicle repairing factory combined padding and drying system exhaust gas feature: VOC concentration is generally lower than 500mg/m3, calorific value is extremely low.For These characteristics, show
So it is not suitable for using RTO, RCO processing technique, the following examples are by taking vehicle repairing factory combined padding and drying system exhaust-gas treatment as an example, to of the invention
Technical solution is described.
Embodiment
This example multistage composite exhaust treatment system structure is as shown in Figure 1, include gas-filtering device 100, microwave and photo catalysis
Device 200, gaseous oxidation device 300 and synchronous adsorbent equipment 400.
Exhaust gas enters gas-filtering device 100, behind 3 and filtering, can remove 70% solid particle and 98%
Coating cloud.
Exhaust gas by filtering enters microwave photocatalytic device 200 by the pipeline connected, is generated using microwave energy ultraviolet
Light combination photocatalyst handles the harmful substance in exhaust gas, wherein most harmful substance is removed, such as benzene, toluene and VOC
Deng.
The exhaust gas come out from microwave photocatalytic device 200, is transported in gaseous oxidation device 300 and is further processed,
Further oxidation processes are carried out to harmful substance remaining in exhaust gas under gas phase condition.
Gaseous oxidation device 300 is connected with synchronous adsorbent equipment 400, and synchronous adsorbent equipment 400 is adsorbed using active material
Remaining harmful substance simultaneously combine the further decomposing harmful substances of microwave energy, to gaseous oxidation device 300 export gas into
The processing of last procedure of row.
Multistage composite exhaust treatment system of the invention, the main function to exhaust-gas treatment are in microwave photocatalytic device
It is completed in 200.
200 structure of this example microwave photocatalytic device is as shown in Fig. 2, include reaction cavity 102, control unit 2, microwave generation
Unit 203, ozone monitoring unit 205, VOC monitoring unit 206 and ultraviolet spectra monitoring unit 207.
Reaction cavity 102 is connect by air inlet with gas-filtering device 100,102 exhaust outlet of reaction cavity and gas phase oxygen
300 connections are set in makeup.
This example reaction cavity 102 is erect-type cavity, is below air inlet, and top is exhaust outlet, and air inlet and row
Port and reaction cavity are on same central axes.Reaction cavity 102 (is not shown by pipeline with wastewater collection exhaust unit in Fig. 2
It connects out).
It is equipped with electrodeless lamp tube (being not shown in Fig. 2) in reaction cavity 102 and is connect with microwave generating unit 203, receives micro-
The microwave signal that wave generating unit 203 exports.Ozone monitoring unit 205, VOC monitoring unit are additionally provided in reaction cavity 102
206 and ultraviolet spectra monitoring unit 207, as shown in Figure 2.
This example microwave generating unit 203 has at least two microwave generator, for generating strong electromagnetic wave, excites Non-polarized lamp
Pipe generation wavelength≤250nm short wave ultraviolet light.Microwave generator is connect with control unit 2, the output power of microwave generator
By the control of control unit.
Ozone monitoring unit 205, VOC monitoring unit 206 and ultraviolet spectra monitoring unit 207 are connect with control unit 2, ginseng
See Fig. 2.
Microwave photocatalytic device 200 of the invention, reaction cavity 102 are erect-type cavity, are below air inlet, top
For exhaust outlet, and air inlet and exhaust outlet are located on the central axes of reaction cavity 102.Ozone monitoring unit 205, VOC monitoring are single
The probe and ultraviolet spectra detection unit 207 of member 206 are arranged in reaction cavity and are connected with control unit.
Erect-type reaction cavity 102 makes air inlet and exhaust outlet and reaction cavity 102 in same vertical direction,
Make not deflect on the circulating direction of gas, circulate more smooth.
Erect-type 102 top of reaction cavity is provided with spray equipment, and lower part is provided with wastewater collection exhaust unit, erects
Formula cavity lower part is connect by pipeline with wastewater collection exhaust unit, can from top to bottom be rinsed, and water is saved, and flush efficiency is high,
Also facilitate waste water to be discharged, guarantee not ponding, reduce the humidity in reaction cavity 102.
Microwave photocatalytic device 200 of the invention, microwave generating unit 203 can be according to the big of specific reaction cavity 102
Small and exhaust gas flow size, is arranged the microwave generator of different number, is uniformly controlled by control unit.
Control unit is constituted using programmable logic circuit, that is including ozone concentration, ultraviolet according to the data that monitor
Spectroscopic data and VOC content, adjust automatically microwave output power size reach and improve exhaust treatment efficiency and energy saving
Purpose.
In microwave photocatalytic device 200, microwave gives the energy to fluorescent tube as a kind of driving source, and excitation fluorescent tube generates
The higher electromagnetic wave of frequency (ultraviolet light).The effect of fluorescent tube is exactly that microwave is converted into ultraviolet light light wave, usual fluorescent tube transmitting
Ultraviolet wavelength is greater than 250nm, and emission spectrum concentrates on 254-280nm, at this moment relatively low to the requirement of microwave energy, usually
The Microwave emission power of 500W can.
By consulting related data discovery, the shorter ultraviolet light of wavelength is easier by pernicious gas molecule absorption, more favorably
It is reacted in the catalysis of pernicious gas.In test of many times, it has been found that increasing considerably with microwave energy, can swash
Send out the shorter ultraviolet light of fluorescent tube launch wavelength, i.e. short wave ultraviolet light (wave-length coverage is usual are as follows: 100~280nm).
Wavelength concentrates on the short wave ultraviolet light near 185nm, such as the ultraviolet light that wave-length coverage is 210~170nm, it is easier to
By pernicious gas molecule absorption, destroy the strand of pernicious gas.The present invention uses multiple microwave generators, Ke Yiti
High microwave energy output, generates more short UV lights, in conjunction with photocatalyst catalyst (usually TiO2) synergistic effect, greatly
Ground improves catalytic efficiency, handles more thorough.
This example control unit accurately controls the unlatching quantity of microwave generator according to the ultraviolet spectrum data monitored, thus
The control for realizing microwave output power, can either improve catalytic efficiency, and not will cause energy waste.
The present invention with microwave transfer energy and select Non-polarized lamp, solve equipment it is low to waste gas humidity tolerance level lack
It falls into, moisture resistance is promoted to 90%；Using automatic cleaning technology, it is low to exhaust gas and dust concentration tolerance level to be processed to solve equipment
Defect, equipment can clean automatically, and clean-up effect is continually and steadily efficient, and later maintenance cost is low, and management is simple；It selects without leading
Line transmits the electrodeless lamp tube of energy, thoroughly solves traditional UV lamps because of conducting wire and contact is easy to oxidize and fluorescent tube light decay speed is fast
Defect easy to aging makes lamp tube service life extend to 50000 hours or so, and clean-up effect is continual and steady for a long time.
This example microwave generator is constituted using high power magnetron, has technology maturation, and microwave high conversion efficiency works the longevity
Order long feature.And the power supply of each magnetron is controlled by control unit, it can very easily adjust microwave and list occurs
The output power of member solves the problems, such as that microwave power control is complicated.
100 structure of this example gas-filtering device can filter out as shown in figure 3, using filter cotton 3 grades of filtration systems of composition
Most solid particles and coating cloud in exhaust gas.
300 structure of this example gaseous oxidation device referring to fig. 4, using ceramic base catalytic bed gaseous oxidation device in, if
Microwave generator has been set, microwave energy input has been increased, harmful substance remaining in exhaust gas is aoxidized under gas phase condition
Processing further increases oxidation efficiency, reduces pernicious gas content.
The nano micropore structure of ceramic catalytic bed has certain absorption interception function to VOC.When VOC organic matter is with gas
VOC is adsorbed when stream passes through catalytic bed, is further deepened oxidation reaction penetrating degree under the action of photochemical catalyst and microwave, is made whole
A gas phase oxidation is more sufficiently thoroughly.
This example synchronizes 400 structure of adsorbent equipment as shown in figure 5, increasing microwave generator in device, is inhaled using active carbon
Attached dose, the pernicious gas of remaining is further processed in cooperation microwave energy irradiation.
The present invention configures synchronous adsorbent equipment in exhaust treatment system end, when organic concentration is low, adsorbs remnants'
Ozone；Remaining organic matter is adsorbed when organic concentration is high.Cooperate the effect of high intensity microwave, further deepens residual ozone to remnants
Oxidation operation discomposing effect.Not only ozone remnants had been solved, but also have made organic matter decomposition more thorough.
This example multistage composite exhaust treatment system, VOC removal efficiency is high, and VOC treatment effect is continual and steady；Without combustion explosion
Etc. security risks: electromagnetic wave driving, without any power lead in reaction cavity, and cavity inner temperature maintains 80 DEG C or so；Fortune
Row expense is low: processing 10000m3/ h exhaust gas, power consumption about 5KW；Using modularized design, increase processing module can according to need,
Up-front investment is not wasted, table 1 gives specific processing index.
Table 1
| Project | (mg/m before processing3) | (mg/m after processing3) | Removal rate | Discharge standard (mg/m3) |
| voc | 473 | 21 | 95.6% | 60 |
| Benzene | 13.4 | 0.085 | 99.5% | 1 |
| Toluene | 0.040 | 0.017 | 57.5% | 5 |
| Dimethylbenzene | 2.88 | < 0.5 | ≤ 83% | 15 |
Claims (10)
1. multistage composite exhaust treatment system, including gas-filtering device, microwave photocatalytic device, gaseous oxidation device with it is synchronous
Adsorbent equipment；The gas-filtering device is connect with microwave photocatalytic device, for filtering the solid particle in exhaust gas；It is described micro-
Glistening light of waves catalytic unit is connect with gaseous oxidation device, generates UV light combined photocatalyst to the nuisance in exhaust gas using microwave energy
Matter is handled；The gaseous oxidation device is connected with synchronous adsorbent equipment, to nocuousness remaining in exhaust gas under gas phase condition
Substance carries out oxidation processes；The synchronous adsorbent equipment is using active material absorption harmful substance and microwave energy decomposition is combined to have
Evil substance；
It is characterized by:
The microwave photocatalytic device, including reaction cavity, control unit, microwave generating unit, ozone monitoring unit, VOC prison
Survey unit and ultraviolet spectra monitoring unit；The reaction cavity is connect by air inlet with gas-filtering device, reaction cavity
Exhaust outlet is connect with gaseous oxidation device；It is equipped with electrodeless lamp tube in the reaction cavity, is discharged by pipeline and wastewater collection single
Member connection；The ozone monitoring unit, VOC monitoring unit and ultraviolet spectra monitoring unit are connect with control unit；The microwave
Generating unit has at least two microwave generator, and for generating strong electromagnetic wave, excitation electrodeless lamp tube generates short wave ultraviolet light；Institute
Microwave generator is stated to connect with control unit.
2. multistage composite exhaust treatment system according to claim 1, which is characterized in that the short wavelength UV optical wavelength≤
250nm。
3. multistage composite exhaust treatment system according to claim 2, which is characterized in that the short wavelength UV optical wavelength model
It encloses for 210~170nm.
4. multistage composite exhaust treatment system according to claim 3, which is characterized in that the short wavelength UV optical wavelength is
185nm。
5. multistage composite exhaust treatment system according to claim 1, which is characterized in that the microwave generator is magnetic control
Pipe.
6. multistage composite exhaust treatment system according to claim 1, which is characterized in that the cavity is erect-type chamber
Body, top are provided with spray equipment, and lower part is provided with wastewater collection exhaust unit, the erect-type cavity lower part by pipeline with
The connection of wastewater collection exhaust unit.
7. multistage composite exhaust treatment system according to claim 6, which is characterized in that the air inlet setting is being erect
Formula cavity lower part, exhaust outlet are arranged on erect-type cavity top.
8. multistage composite exhaust treatment system according to claim 1, which is characterized in that the gas-filtering device uses
Filter cotton filters the solid particle in exhaust gas.
9. multistage composite exhaust treatment system according to claim 1, which is characterized in that the gaseous oxidation device uses
Ceramic base catalytic bed carries out oxidation processes to harmful substance remaining in exhaust gas under gas phase condition.
10. multistage composite exhaust treatment system according to claim 1, which is characterized in that described control unit uses can
Program logic circuit is constituted.
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| CN110052140A (en) * | 2019-05-30 | 2019-07-26 | 罗强音 | Electrodeless luminous energy composite exhaust gas processing system |
| CN113274876A (en) * | 2021-06-28 | 2021-08-20 | 江苏博恩环境工程成套设备有限公司 | Double-microwave coupling waste gas treatment system |
| CN114471066A (en) * | 2020-10-23 | 2022-05-13 | 陕西青朗万城环保科技有限公司 | Microwave denitration method and control system thereof |
| CN114682063A (en) * | 2020-12-31 | 2022-07-01 | 陕西青朗万城环保科技有限公司 | Incineration flue gas treatment method and control system thereof |
| CN114797444A (en) * | 2021-01-27 | 2022-07-29 | 陕西青朗万城环保科技有限公司 | Method for treating waste gas by ozone enhanced microwave catalytic oxidation and control system thereof |
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