CN106362588A - Multiphase mixing catalytic oxidation treatment method and system of organic waste gas - Google Patents
Multiphase mixing catalytic oxidation treatment method and system of organic waste gas Download PDFInfo
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- CN106362588A CN106362588A CN201611023950.1A CN201611023950A CN106362588A CN 106362588 A CN106362588 A CN 106362588A CN 201611023950 A CN201611023950 A CN 201611023950A CN 106362588 A CN106362588 A CN 106362588A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- 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
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- 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
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- 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
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
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- 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
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- 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
Abstract
The invention discloses multiphase mixing catalytic oxidation treatment method and system of organic waste gas. The method comprises the steps: carrying out sprinkling treatment on collected organic waste gas through a sprinkling washing unit; respectively carrying out photolysis treatment and photocatalysis treatment on the organic waste gas after sprinkling treatment, and exhausting the treated organic waste gas through an induced draft fan, wherein the photolysis treatment comprises: irradiating the organic waste gas after sprinkling treatment with rays with wavelength in a first preset range emitted by a radiation emitting device to carry out photolysis; and the photocatalysis treatment comprises: irradiating the catalyst surface with rays with wavelength in a second preset range emitted by the radiation emitting device to cause the catalyst to react with the organic waste gas after sprinkling treatment. By the scheme, treatment of organic waste gas is low in cost, strong in safety, good in treatment effect and higher in treatment efficiency.
Description
Technical field
The present embodiments relate to VOCs treatment technology, more particularly, to multiphase mixed catalytic oxidation VOCs treatment
Method and system.
Background technology
Organic exhaust gas are mainly derived from the big industry of oil, chemical industry etc. 13, and feature is that quantity is larger, the content ripple of Organic substance
Dynamic property is big, flammable, have certain toxicity, and have goes back foul smelling, and the discharge of Chlorofluorocarbons (CFCs) also can cause the destruction of ozone layer.Organic waste
Gas is many to the harm of human body, and the toxicity of the organic exhaust gas of different industries is also different, such as: benzene class organic
Damage the nervus centraliss of people more thing, the obstacle of nervous system can be caused, (in the air content reaches when the excessive concentration of benzene vapor
2%) the acute poisoning of lethal can, be caused；The Organic substance of polycyclic aromatic hydrocarbon has strong carcinogenecity；The Organic substance energy of benzoic acid class
So that the protein of cell is deformed or solidify, cause systemic toxicity profiles；When occurring the Organic substance of nitrile to be poisoned, breathing can be caused tired
Hardly possible, severe asphyxia, the forfeiture of even consciousness are until dead.
In prior art, the processing mode of organic exhaust gas is mainly included with recovery technology and the destruction technology of machine waste gas,
Recovery technology is the method by physics, changes temperature, pressure or adopts the method such as selective absorbent and permoselective membrane
The method carrying out concentration and separation organic pollution, mainly includes adsorption technology, absorption techniqueses, condensation technology and membrane separation technique etc..
Destruction technology is by chemistry or biochemical reaction, with heat, light, catalyst or microorganism etc., organic compound is changed into titanium dioxide
The method of carbon and water etc., mainly includes high temperature incineration, catalysis burning, biological oxidation, low temperature plasma destruction etc..
Wherein, adsorption technology, catalytic combustion technology and heating power incineration technology are traditional VOCs treatment technology, also still
It is so the VOCs treatment technology being most widely used at present.Preferably, cost of investment is low for the first treatment effect of adsorption technology, but
Have such problems as that replacing is frequent, safety is low, the solid process of danger bothers, so single adsorption technology is not by Environmental Protection Agency and blowdown
Enterprise is approved.It is generally as the early stage processing procedure of VOCs treatment, and the modes such as catalysis burning, condensation method that combine are worked in coordination with
Administered.There is secondary pollution and the low shortcoming of safety due to organic absorbent in absorption techniqueses, control in organic exhaust gas at present
Less use in reason；Water base absorption is limited by water-soluble species, only in the organic waste-gas purification of some specific industries
Apply.Condensation technology is directly using just meaningful under high concentration, usually as adsorption technology or catalysis burning
The supplementary meanss such as technology use.Plasma collapse technology, biotechnology and membrane separation technique are that some developing in recent years are new
Technology.Plasma technique is relatively full-fledged academicly, but case is less；The development of membrane separation technique is at present not enough
Maturation, does not still have practical application in the VOCs treatment of Wind Volume.Purification biotechnology obtains in recent years and sends out faster
Exhibition, technology is more ripe, it has also become low-concentration organic exhaust gas administer one of mainstream technology with odor treatment at present.Catalysis burning
More ripe application is also relatively broad abroad with heating power incineration technology, is suitable for processing high concentration, the organic exhaust gas of little air quantity, right
The safety of whole technology and air-tightness require higher.The dense of correlation is needed when processing Wind Volume, the organic exhaust gas of low concentration
Contracting technology carries out pre-treatment to it.
In sum, VOCs treatment mode of the prior art is relatively costly, safety is low, and VOCs treatment is imitated
Rate is low, and effect is poor.
Content of the invention
The present invention provides multiphase mixed catalytic oxidation organic waste gas treatment method and system so that VOCs treatment cost
Low, high safety, high treating effect and treatment effeciency is higher.
In a first aspect, embodiments providing multiphase mixed catalytic oxidation organic waste gas treatment method, comprising:
Organic exhaust gas after collecting are carried out spray process by spray washing unit；
Organic exhaust gas after spray process are carried out respectively photodissociation process and photocatalysis treatment, by the organic exhaust gas after processing
Discharged by air-introduced machine, wherein, described photodissociation processes and includes:
Have described in the roentgenization of the first preset range wavelength after spray process by what ray generating device sent
Organic exhaust gas carry out photodissociation；
Described photocatalysis treatment includes: has penetrating of the second preset range wavelength by what described ray generating device sent
Line irradiates catalyst surface, so that described catalyst and the reaction of the organic exhaust gas after spray process.
Optionally, had described in the roentgenization of the first preset range wavelength through spray by what ray generating device sent
Organic exhaust gas after pouring process carry out photodissociation and include:
Organic exhaust gas after spray process described in the roentgenization of 172nm wavelength being sent by ray generating device,
Will discarded in organic cracking be small molecule active Organic substance, the oxygen of in the air is cracked into oxygen atom and ozone so that institute
State small molecule active Organic substance and oxygen atom, ozone reaction generate water and carbon dioxide.
In any of the above-described scheme, optionally, by what described ray generating device sent, there is the second preset range
The ray of wavelength, so that described catalyst and the reaction of the organic exhaust gas after spray process include:
The roentgenization specific noble metal catalyst surface of the 254nm wavelength being sent by ray generating device, so that institute
State the organic exhaust gas reaction after specific noble metal catalyst occurs catalytic reaction and after spray process, generate water and titanium dioxide
Carbon.
In any of the above-described scheme, optionally, there is equipment, institute for dual wavelength high-energy ray in described ray generating device
State the first preset range wavelength and include the arbitrary wavelength between 30nm to 172nm.
In any of the above-described scheme, optionally, the organic exhaust gas after collecting are sprayed by spray washing unit
Before process, also include:
Organic exhaust gas are collected by gas skirt, airduct；Described by collect after organic exhaust gas entered by spray washing unit
Row spray process includes:
Organic exhaust gas after collecting are carried out spray process by scrubbing tower and circulating pump.
Second aspect, the embodiment of the present invention additionally provides multiphase mixed catalytic oxidation organic waste gas treatment system, comprising:
Spray washing unit, for carrying out spray process to the organic exhaust gas after collecting；
Heterogeneous catalytic oxidation unit, for carrying out respectively at photodissociation process and photocatalysis to the organic exhaust gas after spray process
Reason, wherein, heterogeneous catalytic oxidation unit includes photodissociation processing unit and photocatalysis treatment unit, and described photodissociation processing unit is used
In:
Have described in the roentgenization of the first preset range wavelength after spray process by what ray generating device sent
Organic exhaust gas carry out photodissociation；
Described photocatalysis treatment unit is used for: has the second preset range wavelength by what described ray generating device sent
Roentgenization catalyst surface so that described catalyst and the organic exhaust gas after spray process reaction；
Organic exhaust gas deliverying unit, for being discharged the organic exhaust gas after processing by air-introduced machine.
Optionally, described photodissociation processing unit specifically for:
Organic exhaust gas after spray process described in the roentgenization of 172nm wavelength being sent by ray generating device,
Will discarded in organic cracking be small molecule active Organic substance, the oxygen of in the air is cracked into oxygen atom and ozone so that institute
State small molecule active Organic substance and oxygen atom, ozone reaction generate water and carbon dioxide.
In any of the above-described scheme, optionally, described photocatalysis treatment unit specifically for:
The roentgenization specific noble metal catalyst surface of the 254nm wavelength being sent by ray generating device, so that institute
State the organic exhaust gas reaction after specific noble metal catalyst occurs catalytic reaction and after spray process, generate water and titanium dioxide
Carbon.
In any of the above-described scheme, optionally, there is equipment, institute for dual wavelength high-energy ray in described ray generating device
State the first preset range wavelength and include the arbitrary wavelength between 30nm to 172nm.
In any of the above-described scheme, optionally, also include:
Gas skirt, airduct, for collecting organic exhaust gas；Described spray washing unit specifically for:
Organic exhaust gas after collecting are carried out spray process by scrubbing tower and circulating pump.
The present invention is by carrying out spray process by the organic exhaust gas after collecting by spray washing unit；After spray process
Organic exhaust gas carry out photodissociation process and photocatalysis treatment respectively, by process after organic exhaust gas discharged by air-introduced machine, wherein,
Described photodissociation processes and includes: is had described in the roentgenization of the first preset range wavelength through spray by what ray generating device sent
Organic exhaust gas after pouring is processed carry out photodissociation；Described photocatalysis treatment includes: by having that described ray generating device sends
The roentgenization catalyst surface of the second preset range wavelength, so that described catalyst and the organic exhaust gas after spray process are anti-
Should be so that VOCs treatment low cost, high safety, high treating effect and treatment effeciency is higher.
Brief description
The flow chart that Fig. 1 aoxidizes organic waste gas treatment method for the multiphase mixed catalytic that the embodiment of the present invention one provides；
The flow chart that Fig. 2 aoxidizes organic waste gas treatment method for the multiphase mixed catalytic that the embodiment of the present invention two provides；
The flow chart that Fig. 3 aoxidizes organic waste gas treatment method for the multiphase mixed catalytic that the embodiment of the present invention three provides；
Fig. 4 aoxidizes the structure chart of organic waste gas treatment system for the multiphase mixed catalytic that the embodiment of the present invention four provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure is illustrate only in description, accompanying drawing.
Embodiment one
The flow chart that Fig. 1 aoxidizes organic waste gas treatment method for the multiphase mixed catalytic that the embodiment of the present invention one provides, this
Embodiment is applicable to the situation that the organic exhaust gas of plant emissions are processed, and specifically includes following steps:
Step 101, by collect after organic exhaust gas spray process is carried out by spray washing unit.
Can there is certain mist of oil due in some organic exhaust gas, on the one hand this mist of oil itself is as a kind of pollutant,
Forbidden directly to discharge to environment, on the other hand, if it enters organic waste gas treatment equipment will pollute catalyst, made equipment
Treatment effeciency decline.Exemplary, this spray unit can be made up of scrubbing tower, circulating pump, inserts, may also include cloth liquid
Disk, packing support, hold-down grid and demister etc..
Step 102, had described in the roentgenization of the first preset range wavelength through spray by what ray generating device sent
Organic exhaust gas after pouring is processed carry out photodissociation.
Wherein, the wavelength of this first preset range can be the arbitrary wavelength between 30nm to 172nm.Specifically, utilize
The characteristic frequency spectrum of ray irradiates, and so that the oxygen molecule of in the air is excited into active oxygen or directly generate ozone, makes oxidation
Performance doubles, and on the other hand, can excite the oxidant adding so as to be changed into the hydroxyl radical free radical with more strong oxidation performance
Group, also can make organic polymer chemistry key labile state simultaneously, make its chemistry in the presence of various active oxyradical
Key fast fracture, accelerated oxidation is decomposed.Exemplary, organic exhaust gas can be benzene, toluene, styrene, formaldehyde, acetone, acetic acid
Butyl ester and ethyl acetate etc..Organic exhaust gas are changed into by low molecular compound such as carbon dioxide and water by photodissociation.Wherein, ray
Generating meanss can be the ultraviolet lamp tube of specific wavelength.
Step 103, the roentgenization catalysis with the second preset range wavelength being sent by described ray generating device
Agent surface, so that described catalyst and the reaction of the organic exhaust gas after spray process.
Wherein, this catalyst can be rare earth doped or the chemical constitution of noble metal and crystal structure, and it can be in room temperature
Under normal pressure, carry out electronics coupled with oxidant, thus generating relatively stable hydroxyl free group or peroxide radical
Group, these free groups have very strong oxidation susceptibility, can with absorption in catalyst surface organic exhaust gas with Organic substance
React, the organic free radical generating in reaction can continue the chain reaction participated in, or by generating organic peroxy
After thing free radical, there is oxidative decomposition until being degraded to final inorganic gas product further, from catalyst surface desorption.
In this step, specific accordingly noble metal catalyst be can configure according to different organic exhaust gas compositions, catalyst adopts cellular
, as carrier, the comprehensive light source contacts with ray generating device, specific noble metal catalyst is in the second default model for metal mesh opening
There is catalytic reaction, it is fully reacted with organic exhaust gas, thus it is net to improve organic exhaust gas under the irradiation of the ray enclosing wavelength
Change efficiency, exemplary, this specific noble metal catalyst can be titanium dioxide or aluminium oxide etc..Exemplary, this is second pre-
If range of wavelength can be the arbitrary wavelength between 200nm to 300nm.
Step 104, by process after organic exhaust gas discharged by air-introduced machine.
The technical scheme of the present embodiment, by being carried out the organic exhaust gas after collecting at spray by spray washing unit
Reason, organic after spray process described in the roentgenization of the first preset range wavelength by having of sending of ray generating device
Waste gas carries out photodissociation, the roentgenization catalyst table with the second preset range wavelength being sent by described ray generating device
Face, so that described catalyst and the reaction of the organic exhaust gas after spray process, the organic exhaust gas after processing is arranged by air-introduced machine
Go out so that VOCs treatment low cost, high safety, high treating effect and treatment effeciency is higher.In this programme, expense is low to be
Because power consumption when organic waste gas treatment device runs is its supporting water pump with ultraviolet lamp tube it is only necessary to periodically place oxidation
The consumptive material expense such as replacing of liquid and a small amount of filler, because plant running only has the power of a small amount of fluorescent tube, was entirely processed
Journey is not related to the problems such as inflammable explosive article, high temperature, high-tension electricity, so there is not the potential safety hazards such as fire, electricity, safe.
Embodiment two
The flow chart that Fig. 2 aoxidizes organic waste gas treatment method for the multiphase mixed catalytic that the embodiment of the present invention two provides, this
Embodiment gives a kind of specific photodissociation processing procedure on the basis of embodiment one, specifically includes following steps:
Step 201, by collect after organic exhaust gas spray process is carried out by spray washing unit.
Step 202, having after spray process described in the roentgenization of 172nm wavelength being sent by ray generating device
Machine waste gas, will discarded in organic cracking be small molecule active Organic substance, the oxygen of in the air is cracked into oxygen atom and smelly
Oxygen is so that described small molecule active Organic substance and oxygen atom, ozone reaction generate water and carbon dioxide.
Wherein, 254nm wavelength ray is radiated at catalyst surface to make it have very strong catalysis oxidation ability, has realized
Machine waste and oxygen reaction, ultimately generate water and carbon dioxide.Achieve VOCs treatment just with a small amount of cost
Efficiency is greatly improved.
Step 203, the roentgenization catalysis with the second preset range wavelength being sent by described ray generating device
Agent surface, so that described catalyst and the reaction of the organic exhaust gas after spray process.
Step 204, by process after organic exhaust gas discharged by air-introduced machine.
The technical scheme that the present embodiment provides, by being sprayed the organic exhaust gas after collecting by spray washing unit
Process；Described in the roentgenization of 172nm wavelength being sent by ray generating device, the organic exhaust gas after spray process, will give up
Organic cracking in abandoning is small molecule active Organic substance, the oxygen of in the air is cracked into oxygen atom and ozone so that described little
Molecular activity Organic substance and oxygen atom, ozone reaction generate water and carbon dioxide, the tool sending by described ray generating device
There is the roentgenization catalyst surface of the second preset range wavelength, so that described catalyst and the organic exhaust gas after spray process
Reaction, the organic exhaust gas after processing is discharged by air-introduced machine so that VOCs treatment low cost, high safety, processes effect
Fruit is good and treatment effeciency is higher.
Embodiment three
The flow chart that Fig. 3 aoxidizes organic waste gas treatment method for the multiphase mixed catalytic that the embodiment of the present invention three provides, this
Embodiment gives a kind of specific catalytic oxidation treatment process on the basis of embodiment one, specifically includes following steps:
Step 301, by collect after organic exhaust gas spray process is carried out by spray washing unit.
Step 302, had described in the roentgenization of the first preset range wavelength through spray by what ray generating device sent
Organic exhaust gas after pouring is processed carry out photodissociation.
Step 303, the roentgenization specific noble metal catalyst table of the 254nm wavelength being sent by ray generating device
Face, so that the organic exhaust gas reaction after described specific noble metal catalyst occurs catalytic reaction and after spray process, generates water
And carbon dioxide.
Step 304, by process after organic exhaust gas discharged by air-introduced machine.
The present embodiment provide technical scheme, the present embodiment provide technical scheme, by by collect after organic exhaust gas
Spray process is carried out by spray washing unit；The ray with the first preset range wavelength being sent by ray generating device
Irradiate described organic exhaust gas after spray process and carry out photodissociation, the ray of the 254nm wavelength being sent by ray generating device
Irradiate specific noble metal catalyst surface, so that after described specific noble metal catalyst occurs catalytic reaction and after spray process
Organic exhaust gas reaction, generate water and carbon dioxide, the organic exhaust gas after processing discharged by air-introduced machine so that organic exhaust gas
Processing cost is low, high safety, high treating effect and treatment effeciency is higher.
On the basis of technique scheme, there is equipment for dual wavelength high-energy ray in described ray generating device, described
First preset range wavelength includes the arbitrary wavelength between 30nm to 172nm.In this programme, in order to reduce R ＆ D Cost further
And production cost, arbitrary wavelength between this first preset range wavelength preferably 30nm to 126nm.
On the basis of technique scheme, the organic exhaust gas after collecting are carried out spray process by spray washing unit
Before, also include: organic exhaust gas are collected by gas skirt, airduct；Described by collect after organic exhaust gas pass through spray washing list
Unit carries out spray process and includes: the organic exhaust gas after collecting are carried out spray process by scrubbing tower and circulating pump.
Embodiment 4
Fig. 4 aoxidizes the structure chart of organic waste gas treatment system for the multiphase mixed catalytic that the embodiment of the present invention four provides, such as
Shown in Fig. 4, comprising:
Spray washing unit 1, for carrying out spray process to the organic exhaust gas after collecting；
Heterogeneous catalytic oxidation unit 2, for carrying out photodissociation process and photocatalysis respectively to the organic exhaust gas after spray process
Process, wherein, heterogeneous catalytic oxidation unit includes photodissociation processing unit 21 and photocatalysis treatment unit 22, and described photodissociation processes single
Unit 21 is used for:
Have described in the roentgenization of the first preset range wavelength after spray process by what ray generating device sent
Organic exhaust gas carry out photodissociation；
Described photocatalysis treatment unit 22 is used for: has the second preset range ripple by what described ray generating device sent
Long roentgenization catalyst surface, so that described catalyst and the reaction of the organic exhaust gas after spray process；
Organic exhaust gas deliverying unit 3, for being discharged the organic exhaust gas after processing by air-introduced machine.
The technical scheme that the present embodiment provides, by being sprayed the organic exhaust gas after collecting by spray washing unit
Process；Organic exhaust gas after spray process are carried out respectively photodissociation process and photocatalysis treatment, the organic exhaust gas after processing are led to
Cross air-introduced machine to discharge, wherein, described photodissociation processes and includes: has the first preset range wavelength by what ray generating device sent
Organic exhaust gas after spray process described in roentgenization carry out photodissociation；Described photocatalysis treatment includes: by described ray
What generating meanss sent has the roentgenization catalyst surface of the second preset range wavelength so that described catalyst and through spray
After process organic exhaust gas reaction so that VOCs treatment low cost, high safety, high treating effect and treatment effeciency relatively
High.
On the basis of technique scheme, described photodissociation processing unit 21 specifically for:
Organic exhaust gas after spray process described in the roentgenization of 172nm wavelength being sent by ray generating device,
Will discarded in organic cracking be small molecule active Organic substance, the oxygen of in the air is cracked into oxygen atom and ozone so that institute
State small molecule active Organic substance and oxygen atom, ozone reaction generate water and carbon dioxide.
On the basis of technique scheme, described photocatalysis treatment unit 22 specifically for:
The roentgenization specific noble metal catalyst surface of the 254nm wavelength being sent by ray generating device, so that institute
State the organic exhaust gas reaction after specific noble metal catalyst occurs catalytic reaction and after spray process, generate water and titanium dioxide
Carbon.
On the basis of technique scheme, there is equipment for dual wavelength high-energy ray in described ray generating device, described
First preset range wavelength includes the arbitrary wavelength between 30nm to 172nm.
On the basis of technique scheme, also include:
Gas skirt, airduct, for collecting organic exhaust gas；Described spray washing unit specifically for:
Organic exhaust gas after collecting are carried out spray process by scrubbing tower and circulating pump.
The said goods can perform the method that any embodiment of the present invention is provided, and possesses the corresponding functional module of execution method
And beneficial effect.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore although being carried out to the present invention by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other Equivalent embodiments more can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. multiphase mixed catalytic oxidation organic waste gas treatment method is it is characterised in that include:
Organic exhaust gas after collecting are carried out spray process by spray washing unit；
Organic exhaust gas after spray process are carried out respectively photodissociation process and photocatalysis treatment, the organic exhaust gas after processing are passed through
Air-introduced machine is discharged, and wherein, described photodissociation processes and includes:
The having after spray process described in roentgenization with the first preset range wavelength being sent by ray generating device
Machine waste gas carries out photodissociation；
Described photocatalysis treatment includes: is shone by the ray with the second preset range wavelength that described ray generating device sends
Penetrate catalyst surface, so that described catalyst and the reaction of the organic exhaust gas after spray process.
2. method according to claim 1 is it is characterised in that have the first default model by what ray generating device sent
Enclose the organic exhaust gas after spray process described in the roentgenization of wavelength and carry out photodissociation and include:
Described in the roentgenization of 172nm wavelength being sent by ray generating device, the organic exhaust gas after spray process, will give up
Organic cracking in abandoning is small molecule active Organic substance, the oxygen of in the air is cracked into oxygen atom and ozone so that described little
Molecular activity Organic substance and oxygen atom, ozone reaction generate water and carbon dioxide.
3. method according to claim 1 it is characterised in that by described ray generating device send to have second pre-
If the ray of range of wavelength, so that described catalyst and the reaction of the organic exhaust gas after spray process include:
The roentgenization specific noble metal catalyst surface of the 254nm wavelength being sent by ray generating device, so that described spy
Determine the organic exhaust gas reaction after noble metal catalyst occurs catalytic reaction and after spray process, generate water and carbon dioxide.
4. method according to claim 1 is it is characterised in that described ray generating device occurs for dual wavelength high-energy ray
Equipment, described first preset range wavelength includes the arbitrary wavelength between 30nm to 172nm.
5. the method according to any one of claim 1-4 is it is characterised in that pass through spray by the organic exhaust gas after collecting
Before washing unit carries out spray process, also include:
Organic exhaust gas are collected by gas skirt, airduct；Described by collect after organic exhaust gas sprayed by spray washing unit
Drench to process and include:
Organic exhaust gas after collecting are carried out spray process by scrubbing tower and circulating pump.
6. multiphase mixed catalytic oxidation organic waste gas treatment system is it is characterised in that include:
Spray washing unit, for carrying out spray process to the organic exhaust gas after collecting；
Heterogeneous catalytic oxidation unit, for respectively photodissociation process and photocatalysis treatment are carried out to the organic exhaust gas after spray process,
Wherein, heterogeneous catalytic oxidation unit includes photodissociation processing unit and photocatalysis treatment unit, and described photodissociation processing unit is used for:
The having after spray process described in roentgenization with the first preset range wavelength being sent by ray generating device
Machine waste gas carries out photodissociation；
Described photocatalysis treatment unit is used for: has penetrating of the second preset range wavelength by what described ray generating device sent
Line irradiates catalyst surface, so that described catalyst and the reaction of the organic exhaust gas after spray process；
Organic exhaust gas deliverying unit, for being discharged the organic exhaust gas after processing by air-introduced machine.
7. system according to claim 6 it is characterised in that described photodissociation processing unit specifically for:
Described in the roentgenization of 172nm wavelength being sent by ray generating device, the organic exhaust gas after spray process, will give up
Organic cracking in abandoning is small molecule active Organic substance, the oxygen of in the air is cracked into oxygen atom and ozone so that described little
Molecular activity Organic substance and oxygen atom, ozone reaction generate water and carbon dioxide.
8. system according to claim 6 it is characterised in that described photocatalysis treatment unit specifically for:
The roentgenization specific noble metal catalyst surface of the 254nm wavelength being sent by ray generating device, so that described spy
Determine the organic exhaust gas reaction after noble metal catalyst occurs catalytic reaction and after spray process, generate water and carbon dioxide.
9. system according to claim 6 is it is characterised in that described ray generating device occurs for dual wavelength high-energy ray
Equipment, described first preset range wavelength includes the arbitrary wavelength between 30nm to 172nm.
10. the system according to any one of claim 6-9 is it is characterised in that also include:
Gas skirt, airduct, for collecting organic exhaust gas；Described spray washing unit specifically for:
Organic exhaust gas after collecting are carried out spray process by scrubbing tower and circulating pump.
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| CN (1) | CN106362588A (en) |
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| CN1657142A (en) * | 2004-12-10 | 2005-08-24 | 清华大学 | Air purifying technology |
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