CN106139847A - A kind of exhaust treatment system and waste gas processing method - Google Patents
A kind of exhaust treatment system and waste gas processing method Download PDFInfo
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- CN106139847A CN106139847A CN201610613758.1A CN201610613758A CN106139847A CN 106139847 A CN106139847 A CN 106139847A CN 201610613758 A CN201610613758 A CN 201610613758A CN 106139847 A CN106139847 A CN 106139847A
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- 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
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Abstract
The invention discloses a kind of exhaust treatment system and waste gas processing method.According to the exhaust treatment system of the present invention, including: catalytic unit, catalytic unit, for being catalyzed under the first catalyst by the waste gas entered from entrance, obtains the waste gas being activated；Oxidation unit, the entrance of oxidation unit is connected with the outlet of catalytic unit, for being aoxidized under oxidant by the waste gas being activated, obtains oxidized waste gas；Photocatalytic oxidation device, the entrance of photocatalytic oxidation device is connected with the outlet of oxidation unit, for the waste gas not being activated oxidation after catalytic unit and oxidation unit carries out under the second catalyst catalysis oxidation, obtains according with the admixture of gas of discharge standard.According to the waste gas processing method of the present invention, including: catalytic step；Oxidation step；Photochemical catalytic oxidation step.According to the exhaust treatment system of the present invention, save the energy, ensure safety；Improve the disposal ability to waste gas simultaneously.
Description
Technical field
The present invention relates to environmental technology field, particularly relate to a kind of exhaust treatment system and waste gas processing method.
Background technology
Exhaust-gas treatment is primarily directed to industrial waste gas such as dust granules thing, flue gas flue dust, the abnormal flavour that industrial site produces
Gas and toxic and harmful carry out the work administered.At present, in volatile organic matter (VOCs) field of environmental improvement, waste gas
The method processed includes Production by Catalytic Combustion Process and photocatalytic oxidation.
Production by Catalytic Combustion Process be waste gas under the effect of catalyst, the combustion reaction carried out under certain temperature conditions.?
In the method, waste gas needs the external world to provide the energy to carry out combustion reaction, wastes the energy, the temperature that combustion reaction simultaneously needs
Being 300 DEG C, reaction temperature is higher, there is potential safety hazard；Photocatalytic oxidation is to be catalyst with quasiconductor, is excited by light and draws
Oxidation-reduction reaction oxidation Decomposition waste gas.In the method, light excite the reaction caused for the higher waste gas of concentration at
Manage limited in one's ability, it is impossible to meet and process the operating mode that exhaust gas concentration scope is wider.
Summary of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of exhaust treatment system and waste gas processing method, with
The energy, potential safety hazard and the technical problem limited in one's ability to exhaust-gas treatment is wasted present in solution prior art.
According to an aspect of the present invention, it is provided that a kind of exhaust treatment system, this system includes:
Catalytic unit, described catalytic unit, for being catalyzed under the first catalyst by the waste gas entered from entrance, obtains
To the waste gas being activated；
Oxidation unit, the entrance of described oxidation unit is connected with the outlet of described catalytic unit, for being activated described
Waste gas aoxidize under oxidant, obtain oxidized waste gas；
Photocatalytic oxidation device, the entrance of described photocatalytic oxidation device is connected with the outlet of described oxidation unit, is used for
The waste gas not being activated oxidation after catalytic unit and oxidation unit is carried out under the second catalyst catalysis oxidation, obtains symbol row
Put the admixture of gas of standard.
Further, described photocatalytic oxidation device is ultraviolet catalytic oxidation device.
Further, described first catalyst is solid catalyst；Described oxidant is liquid oxidizer.
Further, this system also includes:
Atomising device, described atomising device includes atomizer and atomizer pump；
Described atomizer is arranged on the inside of described oxidation unit, with the atomization of the outside being arranged on described oxidation unit
One end of pump connects；The other end of described atomizer pump is connected with the inside of described oxidation unit；
Described atomising device, for described oxidant is carried out atomization process, obtains vaporific oxidant.
Further, this system also includes:
Pretreatment filtering device, described pretreatment filtering device is connected with the entrance of described catalytic unit, for by waste gas
Carry out filtration treatment.
Further, this system also includes:
Three-level filter device, described three-level filter device be arranged on described oxidation unit and described photocatalytic oxidation device it
Between, for the described waste gas not being activated oxidation after catalytic unit and oxidation unit is carried out filtration treatment, obtain three grades of mistakes
Waste gas after filter.
According to a further aspect in the invention, it is provided that a kind of waste gas processing method, the method includes:
Catalytic step, is catalyzed waste gas, obtains the waste gas being activated；
Oxidation step, aoxidizes the described waste gas being activated, obtains oxidized waste gas；
Photochemical catalytic oxidation step, carries out being catalyzed oxygen by the waste gas not being activated oxidation after catalytic unit and oxidation unit
Change, obtain meeting the admixture of gas of discharge standard.
Further, also include between described catalytic step and described oxidation step:
Atomization steps, carries out atomization process by oxidant, obtains vaporific oxidant.
Further, also included before described catalytic step:
Pretreatment filtration step, carries out filtration treatment by waste gas.
Further, also include between described oxidation step and described photochemical catalytic oxidation step:
Three-stage filtration step, is carried out the described waste gas not being activated oxidation after catalytic unit and oxidation unit at filtration
Reason, obtains the waste gas after three-stage filtration.
Compared with prior art, the invention have the benefit that
According to the exhaust treatment system of the present invention, by catalytic unit, oxidation unit and photocatalytic oxidation device are combined
Arranging, activated by waste gas, aoxidized by the waste gas of activation in oxidation unit in catalytic unit, oxidation reaction is often
Just can carry out under temperature, in photocatalytic oxidation device, the waste gas not being activated oxidation after catalytic unit and oxidation unit be entered
Row catalysis oxidation, the concentration of waste gas is reduced；Through above-mentioned waste gas processing method, it is not necessary to the extraneous offer energy, it is to avoid
Potential safety hazard, has saved the energy；Improve the utilization ratio of light simultaneously, thus improve photocatalytic oxidation device to waste gas
Disposal ability so that photocatalysis oxidation reaction disclosure satisfy that and processes the operating mode that exhaust gas concentration scope is wider.
According to the waste gas processing method of the present invention, by by catalytic step, oxidation step and the knot of photochemical catalytic oxidation step
Incompatible process waste gas, activates waste gas in catalytic step, is aoxidized by the waste gas of activation in oxidation step, oxidation
Reaction the most just can be carried out, and in photochemical catalytic oxidation step, will not be activated oxidation after catalytic step and oxidation step
Waste gas carry out catalysis oxidation, the concentration of waste gas is reduced；Through above-mentioned waste gas processing method, it is not necessary to extraneous offer energy
Source, it is to avoid potential safety hazard, has saved the energy；Improve the utilization ratio of light simultaneously, thus improve photochemical catalytic oxidation step
Disposal ability to waste gas so that photocatalysis oxidation reaction disclosure satisfy that and processes the operating mode that exhaust gas concentration scope is wider.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 shows the flow chart of a kind of exhaust treatment system that the embodiment of the present invention 1 provided；
Fig. 2 shows the flow chart of a kind of exhaust treatment system that the embodiment of the present invention 2 provided；
Fig. 3 shows the flow chart of a kind of exhaust treatment system that the embodiment of the present invention 3 provided；
Fig. 4 shows the flow chart of a kind of exhaust treatment system that the embodiment of the present invention 4 provided；
Fig. 5 shows the structural representation of a kind of exhaust treatment system that the embodiment of the present invention 4 provided；
Fig. 6 shows the flow chart of a kind of waste gas processing method that the embodiment of the present invention 5 provided；
Fig. 7 shows the flow chart of a kind of waste gas processing method that the embodiment of the present invention 6 provided；
Fig. 8 shows the flow chart of a kind of waste gas processing method that the embodiment of the present invention 7 provided；
Fig. 9 shows the flow chart of a kind of waste gas processing method that the embodiment of the present invention 8 provided.
Reference
1-catalytic unit 2-oxidation unit 3-catalytic oxidizing equipment
4-atomising device 5-pretreatment filtering device 6-three-level filter device
S1-catalytic step S2-oxidation step S3-catalytic oxidation stage
S4-atomization steps S5-pretreatment filtration step S6-three-stage filtration step
Detailed description of the invention
Detailed description of the invention is only the description of the invention, and does not constitute the restriction to present invention, below in conjunction with
The present invention is further described and describes by accompanying drawing and specific embodiment.
According to an aspect of the present invention, it is provided that a kind of exhaust treatment system, this system includes:
Catalytic unit, catalytic unit for the waste gas entered from entrance is catalyzed under the first catalyst, obtain by
The waste gas of activation；
Oxidation unit, the entrance of oxidation unit is connected with the outlet of catalytic unit, is aoxidizing for the waste gas that will be activated
Aoxidize under agent, obtain oxidized waste gas；
Photocatalytic oxidation device, the entrance of photocatalytic oxidation device is connected with the outlet of oxidation unit, and being used for will be through catalysis
The waste gas not being activated oxidation after device and oxidation unit carries out catalysis oxidation under the second catalyst, obtains meeting discharge standard
Admixture of gas.
According to the exhaust treatment system of the present invention, by catalytic unit, oxidation unit and photocatalytic oxidation device are combined
Arranging, activated by waste gas, aoxidized by the waste gas of activation in oxidation unit in catalytic unit, oxidation reaction is often
Just can carry out under temperature, in photocatalytic oxidation device, the waste gas not being activated oxidation after catalytic unit and oxidation unit be entered
Row catalysis oxidation, the concentration of waste gas is reduced；Through above-mentioned waste gas processing method, it is not necessary to the extraneous offer energy, it is to avoid
Potential safety hazard, has saved the energy；Improve the utilization ratio of light simultaneously, thus improve photocatalytic oxidation device to waste gas
Disposal ability so that photocatalysis oxidation reaction disclosure satisfy that and processes the operating mode that exhaust gas concentration scope is wider.
Wherein, the waste gas that this device can process is by ammonia, trimethylamine, hydrogen sulfide, first sulfur hydrogen, methanthiol, methyl sulfide, second
Acid butyl ester, ethyl acetate, methyl disulfide, Carbon bisulfide, styrene, sulfide, benzene,toluene,xylene, VOCs type organic etc.
In one or more composition, applied range.
Wherein, waste gas through catalytic unit and the process of oxidation unit, 70～80% exhausted air quantity progressively decompose generation nothing
The little molecule of evil, such as, the little molecule such as carbon dioxide and water.
Being provided with multiple rows of high energy light wave producer in oxidation unit, the high energy light wave of different-waveband launched by light wave producer,
It is made to be internally formed High-energy photon lasing region, under the effect of light quantum, for be catalyzed after catalytic step and oxidation step
After the photon of the organic molecule absorption specific wavelength in the waste gas of oxidation, molecular link is interrupted, in free state；
Second catalyst is photocatalyst of titanium dioxide, and photocatalyst of titanium dioxide is the catalysis participating in issuing raw reaction at light
Agent, photocatalyst of titanium dioxide under light illumination, the enough energy of Electron absorption on its surface and depart from, now electron detachment
Position just forms the hole of positively charged, and can dissociate the hydroxide ion by surrounding water molecules in hole, makes hydroxide ion become
The hydroxyl radical free radical that activity is bigger；Hydroxyl radical free radical meets in the organic molecule in the waste gas of free state, will be by Organic substance
Electronics in molecule is recaptured so that organic molecule decomposes, and decomposes and becomes the little molecules such as harmless water and carbon dioxide, so that
The waste gas that must discharge meets discharge standard.
Preferably hydroxyl radical free radical is as the oxidant of the organic molecule in waste gas decomposition, and main cause is hydroxyl radical free radical
There is compared with common oxidizer stronger oxidability, it is possible to sufficiently react with the organic molecule in waste gas；Table
One is the oxidizing potential of multiple oxidant, and table one is as shown in the table.
Table one
| Oxidant | Reaction | Oxidizing potential/V |
| OH | OH+H++e-→H2O | 3.06 |
| O3 | O3+2H++2e-→O2+H2O | 2.07 |
| H2O2 | H2O2+2H++2e-→2H2O | 1.77 |
| HClO | HClO+H++2e-→Cl-+H2O | 1.63 |
| Cl2 | Cl2+2e-→2Cl- | 1.36 |
Can draw from table one, hydroxyl radical free radical, compared with common oxidant, in there is oxidizing process, has relatively
High oxidizing potential, so hydroxyl radical free radical has stronger oxidisability.
Wherein, for whole exhaust treatment system, each several part apparatus cost is cheap, and floor space is little, it is not necessary to special messenger
Maintenance and operation, safe ready.
According to a kind of embodiment of exhaust treatment system of the present invention, photocatalytic oxidation device is ultraviolet catalytic oxidation dress
Put.
According to the exhaust treatment system of the present invention, owing to the light of the second catalyst rings scope in ultraviolet band, employing ultraviolet
Light excites the second catalyst, it is possible to be quickly generated the hydroxyl radical free radical with strong oxidizing property, and the number of the hydroxyl radical free radical generated
Measure more, so that the amount of waste gas oxidized in photocatalysis oxidation reaction increases, and then the waste gas being processed is more easy to
Reach discharge standard.
According to a kind of embodiment of exhaust treatment system of the present invention, the first catalyst is solid catalyst；Oxidant is
Liquid oxidizer.
According to the exhaust treatment system of the present invention, the first catalyst is the oxide of rare metal, such as zirconium oxide or oxygen
Change titanium；The stable chemical nature of the solid catalyst selected, is not easily susceptible to the impact of external environment, loses catalysis activity；Oxidation
The oxidant of liquid is selected in agent so that oxidant is more likely formed vaporific oxidant by atomising device.
According to a kind of embodiment of exhaust treatment system of the present invention, this system also includes:
Atomising device, atomising device includes atomizer and atomizer pump；
Atomizer is arranged on the inside of oxidation unit, connects with one end of the atomizer pump of the outside being arranged on oxidation unit
Connect；The other end of atomizer pump is connected with the inside of oxidation unit；
Atomising device, for oxidant is carried out atomization process, obtains vaporific oxidant.
According to the exhaust treatment system of the present invention, liquid oxidizer is atomized, obtains vaporific oxidant, make by atomising device
The molecule obtaining liquid oxidizer skips dissociating the stage of restriction oxidizing reaction rate；Vaporific oxidant particle diameter is less, it is possible to
Waste gas is fully contacted in oxidation unit, so that the amount of oxidized waste gas increases, and then makes the waste gas that is processed more
Easily reach discharge standard.
Waste gas in catalytic unit through catalysis, in oxidation unit through vaporific oxidizing after, enter back into light and urge
Change oxidation unit, vaporific oxidant and the synergism of high energy light wave so that the utilization ratio of light wave improves more than 10 times, from
And enhancing the photocatalytic oxidation disposal ability for waste gas so that photocatalytic oxidation disclosure satisfy that process exhaust gas concentration model
Enclose wider operating mode.
According to a kind of embodiment of exhaust treatment system of the present invention, this system also includes:
Pretreatment filtering device, pretreatment filtering device is connected with the entrance of catalytic unit, for being filtered by waste gas
Process.
According to the exhaust treatment system of the present invention, before waste gas enters catalytic unit, waste gas is filled in pretreatment filtration
Carry out filtration treatment, the particulate matter in eliminating waste gas and stickum in putting, prevent particulate matter and stickum from blocking first and urge
Agent duct, improves the activity of the first catalyst, strengthens the exhaust-gas treatment ability of exhaust treatment system.
According to a kind of embodiment of exhaust treatment system of the present invention, this system also includes:
Three-level filter device, three-level filter device is arranged between oxidation unit and photocatalytic oxidation device, for will be through
The waste gas not being activated oxidation after catalytic unit and oxidation unit carries out filtration treatment, obtains the waste gas after three-stage filtration.
According to the exhaust treatment system of the present invention, before entering photocatalytic oxidation device by waste gas, by waste gas at three grades
Defecator carries out filtration treatment, particulate matter tiny in eliminating waste gas, prevents tiny particulate matter from blocking the second catalyst
Duct, improves the activity of the second catalyst, strengthens the exhaust-gas treatment ability of exhaust treatment system.
According to a further aspect in the invention, it is provided that a kind of waste gas processing method, the method includes:
Catalytic step, is catalyzed waste gas, obtains the waste gas being activated；
Oxidation step, aoxidizes the waste gas being activated, and obtains oxidized waste gas；
Photochemical catalytic oxidation step, carries out being catalyzed oxygen by the waste gas not being activated oxidation after catalytic unit and oxidation unit
Change, obtain meeting the admixture of gas of discharge standard.
The method of the exhaust-gas treatment according to the present invention, have employed the exhaust treatment system of the present invention, by by catalytic step,
The combination of oxidation step and photochemical catalytic oxidation step processes waste gas, is activated by waste gas in catalytic step, in oxidation step
Being aoxidized by the waste gas of activation in Zhou, oxidation reaction the most just can be carried out, in photochemical catalytic oxidation step, and will be through catalysis
The waste gas not being activated oxidation after step and oxidation step carries out catalysis oxidation, and the concentration of waste gas is reduced；Through above-mentioned
Waste gas processing method, it is not necessary to extraneous provide the energy, it is to avoid potential safety hazard, has saved the energy；Improve the utilization of light simultaneously
Efficiency, thus improve the photochemical catalytic oxidation step disposal ability to waste gas so that photocatalysis oxidation reaction disclosure satisfy that process
The operating mode that exhaust gas concentration scope is wider.
According to a kind of embodiment of waste gas processing method of the present invention, also include between catalytic step and oxidation step:
Atomization steps, carries out atomization process by oxidant, obtains vaporific oxidant.
According to the waste gas processing method of the present invention, use the atomising device in exhaust treatment system of the present invention, atomising device
Liquid oxidizer is atomized, obtains vaporific oxidant so that the molecule of liquid oxidizer skips restriction oxidizing reaction rate
Dissociate the stage；Vaporific oxidant particle diameter is less, it is possible to be fully contacted in oxidation unit with waste gas, so that oxidized
The amount of waste gas increases, and then makes the waste gas being processed be more easy to reach discharge standard.
Waste gas in catalytic unit through catalysis, in oxidation unit through vaporific oxidizing after, enter back into light and urge
Change oxidation unit, vaporific oxidant and the synergism of high energy light wave so that the utilization ratio of light wave improves more than 10 times, from
And enhancing the photocatalytic oxidation disposal ability for waste gas so that photocatalytic oxidation disclosure satisfy that process exhaust gas concentration model
Enclose wider operating mode.
According to a kind of embodiment of waste gas processing method of the present invention, also included before catalytic step:
Pretreatment filtration step, carries out filtration treatment by waste gas.
According to the waste gas processing method of the present invention, use the pretreatment filtering device in exhaust treatment system of the present invention, will
Waste gas carries out filtration treatment, the particulate matter in eliminating waste gas and stickum in pretreatment filtering device, prevent particulate matter and
Stickum blocks the first catalyst duct, improves the activity of the first catalyst, strengthens the exhaust-gas treatment energy of exhaust treatment system
Power.
According to a kind of embodiment of waste gas processing method of the present invention, between oxidation step and catalytic oxidation stage also
Including:
Three-stage filtration step, carries out filtration treatment by the waste gas not being activated oxidation after catalytic unit and oxidation unit,
Obtain the waste gas after three-stage filtration.
According to the waste gas processing method of the present invention, use the three-level filter device in exhaust treatment system of the present invention, will be useless
Gas carries out filtration treatment, particulate matter tiny in eliminating waste gas in three-level filter device, prevents tiny particulate matter from blocking the
Two catalyst ducts, improve the activity of the second catalyst, strengthen the exhaust-gas treatment ability of exhaust treatment system.
In sum, according to exhaust treatment system and the optional many factors of waste gas processing method of the present invention.According to this
Bright claim can be combined into multiple embodiments, and the technical scheme therefore gone out according to the claim combinations of the present invention is equal
Within protection scope of the present invention.Below in conjunction with specific embodiments to exhaust treatment system of the present invention and exhaust-gas treatment side
Method is further described through.
Several exhaust treatment systems that following embodiment 1-4 provides for the embodiment of the present invention.
Embodiment 1
As it is shown in figure 1, wherein, the flow chart of a kind of exhaust treatment system that Fig. 1 is provided by embodiment 1.
The exhaust treatment system that the present embodiment provides, this system includes:
Catalytic unit 1, catalytic unit 1, for being catalyzed under the first catalyst by the waste gas entered from entrance, obtains
The waste gas being activated；
Oxidation unit 2, the entrance of oxidation unit 2 is connected with the outlet of catalytic unit 1, and the waste gas being used for being activated is at oxygen
Aoxidize under agent, obtain oxidized waste gas；
Photocatalytic oxidation device 3, the entrance of photocatalytic oxidation device 3 is connected with the outlet of oxidation unit 2, and being used for will be through urging
The waste gas not being activated oxidation after gasifying device and oxidation unit carries out catalysis oxidation under the second catalyst, obtains according with discharge standard
Admixture of gas.
Embodiment 2
As in figure 2 it is shown, wherein, the flow chart of a kind of exhaust treatment system that Fig. 2 is provided by embodiment 2.
The exhaust treatment system that the present embodiment provides, this system includes:
Catalytic unit 1, catalytic unit 1, for being catalyzed under the first catalyst by the waste gas entered from entrance, obtains
The waste gas being activated；
Atomising device 4, atomising device 4 includes atomizer and atomizer pump；
Atomizer is arranged on the inside of described oxidation unit 2, with the one of the atomizer pump of the outside being arranged on oxidation unit 2
End connects；The other end of atomizer pump is connected with the inside of oxidation unit 2；
Atomising device 4, for oxidant is carried out atomization process, obtains vaporific oxidant；
Oxidation unit 2, the entrance of oxidation unit 2 is connected with the outlet of catalytic unit 1, and the waste gas being used for being activated is at oxygen
Aoxidize under agent, obtain oxidized waste gas；
Photocatalytic oxidation device 3, the entrance of photocatalytic oxidation device 3 is connected with the outlet of oxidation unit 2, and being used for will be through urging
The waste gas not being activated oxidation after gasifying device and oxidation unit carries out catalysis oxidation under the second catalyst, obtains according with discharge standard
Admixture of gas.
Embodiment 3
As it is shown on figure 3, wherein, the flow chart of a kind of exhaust treatment system that Fig. 3 is provided by embodiment 3.
The exhaust treatment system that the present embodiment provides, this system includes:
Pretreatment filtering device 5, pretreatment filtering device 5 is connected with the entrance of catalytic unit 1, for being carried out by waste gas
Filter processes；
Catalytic unit 1, catalytic unit 1, for being catalyzed under the first catalyst by the waste gas entered from entrance, obtains
The waste gas being activated；
Atomising device 4, atomising device 4 includes atomizer and atomizer pump；
Atomizer is arranged on the inside of oxidation unit 2, connects with one end of the atomizer pump of the outside being arranged on oxidation unit 2
Connect；The other end of atomizer pump is connected with the inside of oxidation unit 2；
Atomising device 4, for oxidant is carried out atomization process, obtains vaporific oxidant；
Oxidation unit 2, the entrance of oxidation unit 2 is connected with the outlet of catalytic unit 1, and the waste gas being used for being activated is at oxygen
Aoxidize under agent, obtain oxidized waste gas；
Photocatalytic oxidation device 3, the entrance of photocatalytic oxidation device 3 is connected with the outlet of oxidation unit 2, and being used for will be through urging
The waste gas not being activated oxidation after gasifying device and oxidation unit carries out catalysis oxidation under the second catalyst, obtains meeting discharge mark
Accurate admixture of gas.
Embodiment 4
As shown in Figure 4, wherein, the flow chart of a kind of exhaust treatment system that Fig. 4 is provided by embodiment 4；
As it is shown in figure 5, wherein, the structural representation of a kind of exhaust treatment system that Fig. 5 is provided by embodiment 5.
Pretreatment filtering device 5, pretreatment filtering device 5 is connected with the entrance of catalytic unit 1, for being carried out by waste gas
Filter processes；
Catalytic unit 1, catalytic unit 1 is used for the waste gas after the pretreatment filtration that entrance enters at the first catalyst
Under be catalyzed, obtain the waste gas being activated；
Atomising device 4, atomising device 4 includes atomizer and atomizer pump；
Atomizer is arranged on the inside of described oxidation unit 2, with the one of the atomizer pump of the outside being arranged on oxidation unit 2
End connects；The other end of atomizer pump is connected with the inside of oxidation unit；
Atomising device 4, for oxidant is carried out atomization process, obtains vaporific oxidant；
Oxidation unit 2, the entrance of oxidation unit 2 is connected with the outlet of catalytic unit, and the waste gas being used for being activated is at oxygen
Aoxidize under agent, obtain oxidized waste gas；
Three-level filter device 6, three-level filter device 6 is arranged between oxidation unit 2 and photocatalytic oxidation device 3, is used for
The waste gas not being activated oxidation after catalytic unit and oxidation unit is carried out filtration treatment, giving up after obtaining three-stage filtration
Gas；
Photocatalytic oxidation device 3, the entrance of photocatalytic oxidation device 3 is connected with the outlet of oxidation unit, and being used for will be through urging
The waste gas not being activated oxidation after gasifying device and oxidation unit carries out catalysis oxidation under the second catalyst, obtains according with discharge standard
Admixture of gas.
Several waste gas processing methods that following embodiment 5-8 provides for the embodiment of the present invention, at several waste gas processing methods
In have employed the exhaust treatment system in embodiment 1-4.
Embodiment 5
As shown in Figure 6, wherein, the flow chart of a kind of waste gas processing method that Fig. 6 is provided by embodiment 6.
The waste gas processing method that the present embodiment provides, the method includes:
First carry out catalytic step S1, waste gas is catalyzed, obtain the waste gas being activated；Next carries out oxidation step
S2, aoxidizes the waste gas being activated, and obtains oxidized waste gas；Finally carry out photochemical catalytic oxidation step S3, will be through catalysis
The waste gas not being activated oxidation after device and oxidation unit carries out catalysis oxidation, obtains meeting the admixture of gas of discharge standard.
Embodiment 6
As it is shown in fig. 7, wherein, the flow chart of a kind of waste gas processing method that Fig. 7 is provided by embodiment 7.
The waste gas processing method that the present embodiment provides, the method includes:
First carry out catalytic step S1, waste gas is catalyzed, obtain the waste gas being activated；Next carries out atomization steps
S4, carries out atomization process by oxidant, obtains vaporific oxidant；Again carry out oxidation step S2, the waste gas being activated is entered
Row oxidation, obtains oxidized waste gas；Finally carry out photochemical catalytic oxidation step S3, will after catalytic unit and oxidation unit not by
The waste gas of active oxidation carries out catalysis oxidation, obtains meeting the admixture of gas of discharge standard.
Embodiment 7
As shown in Figure 8, wherein, the flow chart of a kind of waste gas processing method that Fig. 8 is provided by embodiment 8.
The waste gas processing method that the present embodiment provides, the method includes:
First carry out pretreatment filtration step S5, waste gas is carried out filtration treatment；Next carries out catalytic step S1, by waste gas
It is catalyzed, obtains the waste gas being activated；Again carry out atomization steps S4, oxidant is carried out atomization process, obtain vaporific
Oxidant；Then carry out oxidation step S2, the waste gas being activated is aoxidized, obtain oxidized waste gas；Finally carry out light
Catalytic oxidation stage S3, carries out the waste gas not being activated oxidation after catalytic unit and oxidation unit catalysis oxidation, is accorded with
Close the admixture of gas of discharge standard.
Embodiment 8
As it is shown in figure 9, wherein, the flow chart of a kind of waste gas processing method that Fig. 9 is provided by embodiment 9.
The waste gas processing method that the present embodiment provides, the method includes:
First carry out pretreatment filtration step S5, waste gas is carried out filtration treatment；Next carries out catalytic step S1, will locate in advance
Waste gas after reason filters is catalyzed, and obtains the waste gas being activated；Again carry out atomization steps S4, oxidant is atomized
Process, obtain vaporific oxidant；Then carry out oxidation step S2, the waste gas being activated is aoxidized, obtain oxidized
Waste gas；Subsequently carry out three-stage filtration step S6, the waste gas not being activated oxidation after catalytic unit and oxidation unit is carried out
Filtration treatment, obtains the waste gas after three-stage filtration；Finally carry out photochemical catalytic oxidation step S2, will be through catalytic unit and oxidation dress
Postpone the waste gas not being activated aoxidizing and carry out catalysis oxidation, obtain meeting the admixture of gas of discharge standard.
In sum, for the exhaust treatment system of embodiment 1-4 and the waste gas processing method of embodiment 5-8, tool
The process of body is as follows:
First waste gas carry out in pretreatment filtering device 5 filtration treatment, and present in eliminating waste gas, particulate matter is with viscous
Property material etc., wherein, waste gas is by ammonia, trimethylamine, hydrogen sulfide, first sulfur hydrogen, methanthiol, methyl sulfide, butyl acetate, acetic acid second
Ester, methyl disulfide, Carbon bisulfide, styrene, the one or many in sulfide, benzene,toluene,xylene or VOCs type organic etc.
Plant composition；Secondly, the waste gas after filtration enters catalytic unit 1, changes and be catalyzed under the first catalyst, obtains being activated
Waste gas, wherein, the first catalyst is titanium oxide or zirconium oxide；Thirdly, be activated waste gas enter atomising device 4, atomization
Oxidant in oxidation unit 2 is delivered to atomizer by pump, and oxidant is atomized by atomizer, makes oxidant form less mist
Drip, the most vaporific oxidant；Then, vaporific oxidant is fully contacted in oxidation unit with waste gas, reacts, by waste gas
In organic molecule gradually decompose, obtain oxidized waste gas, oxidized waste gas is mainly harmless carbon dioxide and water；
Subsequently, oxidized waste gas carries out three-stage filtration process in three-level filter device 6, filters solid particle and stickum
Deng；Finally, the waste gas after three-stage filtration enters photocatalytic oxidation device 3, and the light wave producer in oxidation unit 2 is launched
The high energy light wave of different-waveband so that it is be internally formed High-energy photon lasing region, under the effect of light quantum, through catalytic unit 1
It is interrupted with molecular link after the photon that the organic molecule in the waste gas not being activated oxidation after oxidation unit 2 absorbs specific wavelength,
In free state；Photocatalyst of titanium dioxide absorb under light illumination around moisture produce hydroxyl radical free radical, hydroxyl radical free radical meet in
Organic molecule in the waste gas of free state, will recapture the electronics in organic molecule so that organic molecule decomposes, point
Solution becomes the little molecules such as harmless water and carbon dioxide, so that the waste gas of discharge meets discharge standard.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. an exhaust treatment system, it is characterised in that this system includes:
Catalytic unit, described catalytic unit for the waste gas entered from entrance is catalyzed under the first catalyst, obtain by
The waste gas of activation；
Oxidation unit, the entrance of described oxidation unit is connected with the outlet of described catalytic unit, for by described be activated useless
Gas aoxidizes under oxidant, obtains oxidized waste gas；
Photocatalytic oxidation device, the entrance of described photocatalytic oxidation device is connected with the outlet of described oxidation unit, for will be through
The waste gas not being activated oxidation after catalytic unit and oxidation unit carries out catalysis oxidation under the second catalyst, obtains meeting discharge
The admixture of gas of standard.
Exhaust treatment system the most according to claim 1, it is characterised in that described photocatalytic oxidation device is that ultraviolet light is urged
Change oxidation unit.
Exhaust treatment system the most according to claim 1, it is characterised in that described first catalyst is solid catalyst；
Described oxidant is liquid oxidizer.
Exhaust treatment system the most according to claim 3, it is characterised in that this system also includes:
Atomising device, described atomising device includes atomizer and atomizer pump；
Described atomizer is arranged on the inside of described oxidation unit, with the atomizer pump of the outside being arranged on described oxidation unit
One end connects；The other end of described atomizer pump is connected with the inside of described oxidation unit；
Described atomising device, for described oxidant is carried out atomization process, obtains vaporific oxidant.
Exhaust treatment system the most according to claim 1, it is characterised in that this system also includes:
Pretreatment filtering device, described pretreatment filtering device is connected with the entrance of described catalytic unit, for being carried out by waste gas
Filtration treatment.
Exhaust treatment system the most according to claim 1, it is characterised in that this system also includes:
Three-level filter device, described three-level filter device is arranged between described oxidation unit and described photocatalytic oxidation device,
For by described be not activated after catalytic unit and oxidation unit oxidation waste gas carry out filtration treatment, obtain three-stage filtration it
After waste gas.
7. the waste gas processing method of the exhaust treatment system used described in any one of claim 1-6, it is characterised in that should
Method includes:
Catalytic step, is catalyzed waste gas, obtains the waste gas being activated；
Oxidation step, aoxidizes the described waste gas being activated, obtains oxidized waste gas；
Photochemical catalytic oxidation step, carries out catalysis oxidation by the waste gas not being activated oxidation after catalytic unit and oxidation unit,
To the admixture of gas meeting discharge standard.
Waste gas processing method the most according to claim 7, it is characterised in that at described catalytic step and described oxidation step
Between also include:
Atomization steps, carries out atomization process by oxidant, obtains vaporific oxidant.
Waste gas processing method the most according to claim 7, it is characterised in that also included before described catalytic step:
Pretreatment filtration step, carries out filtration treatment by waste gas.
Waste gas processing method the most according to claim 7, it is characterised in that in described oxidation step and described photocatalysis
Also include between oxidation step:
Three-stage filtration step, carries out filtration treatment by the described waste gas not being activated oxidation after catalytic unit and oxidation unit,
Obtain the waste gas after three-stage filtration.
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| CN114748967A (en) * | 2022-05-12 | 2022-07-15 | 深圳市智盾环保科技有限公司 | Organic waste gas high-efficiency photolysis equipment and organic waste gas photolysis treatment method |
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