The multistage catalytic oxidation treatment device of organic exhaust gas
Technical field
Gas processing device technical field is the utility model is related to, more particularly, to a kind of multistage catalytic oxygen of organic exhaust gas
Change processing unit.
Background technology
Organic exhaust gas refers generally to the organic compound gas (VOC) of volatile, mainly there is formaldehyde, toluene, dimethylbenzene, third
Ketone etc., its species is various, inflammable and explosive, poisonous and harmful, intractability is big.During production and living the generation of organic exhaust gas with
Place is as it can be seen that it is to pollute atmospheric environment, the arch-criminal being detrimental to health.In today that problem of environmental pollution is on the rise,
Stringent standard has been formulated in discharge of the government to organic exhaust gas.
At present, usually there is the purifying treatment method of organic exhaust gas in enterprise:Absorption process, absorption method, catalysis method and combustion method.
Wherein, absorption process needs to consider the solubility of different organic exhaust gas, ineffective for multicomponent VOCs treatment, and exists
The process problem of waste liquid after absorption;Absorption method is to collect organic exhaust gas by materials such as activated carbons, and organic exhaust gas is not
Have thoroughly remove thus secondary pollution may be caused;Combustion method requires the concentration range of organic exhaust gas, is not suitable for low dense
Spend organic exhaust gas processing, and there are equipment it is easy to aging the problem of;Catalysis method can thoroughly clear up organic exhaust gas to titanium dioxide
Carbon and water, thus be increasingly valued by people, development prospect is wide.
People are enhancing clean-up effect at this stage, reinforcement process processing have been carried out to catalysis method, such as Delagrange et al.
Toluene is handled with plasma-catalytic, finds wherein O-、O+Catalytic effect is total to the short life such as nitrogen oxides and long-life species
It is same to work;Ozone treatment benzene and the hexamethylene such as Hisahiro Einaga, it is believed that catalytic decomposition ozone produce active oxygen or
Peroxide species O2Etc. the efficient oxidation agent for being Decomposition of benzene and hexamethylene;The photoactivation such as R.S.Sonawane method handles benzene
Phenol, it is believed that the hydroxyl radical free radical (OH) and Superoxide anion free radical (O2-) produced in photocatalytic process plays major catalytic
Effect.It can be seen from the above that difference is catalyzed enhancing technologies since the active material difference to work causes its oxidability different, for
Pollutant it is also different.
However, industrial organic exhaust gas complicated component, concentration range are big, single catalysis or enhancing catalysis technique are difficult to realize
The effective of multicomponent organic exhaust gas is removed, it is necessary to develop comprehensive treatment technique.
The content of the invention
The purpose of this utility model is to provide a kind of multistage catalytic oxidation treatment device of organic exhaust gas, it has with processing
The characteristics of ability of machine exhaust gas is preferable.
Technical solution is used by the utility model:The multistage catalytic oxidation treatment device of organic exhaust gas, it is described organic
The multistage catalytic oxidation treatment device of exhaust gas includes:
Primary filter module, organic exhaust gas enter the inlet end of the primary filter module;
Plasma-catalytic module, the outlet side of the primary filter module are connected to the air inlet of the plasma catalytic module
End;
Photocatalysis module, the outlet side of the plasma catalytic module are connected to the inlet end of the photocatalysis module, and should
Photocatalysis module has outlet side;And
The plasma catalytic module includes the first housing, is equipped with the first shell body and separates the plasma catalytic module
Inlet end and outlet side baffle, which is equipped with some through holes, is fixed with circular cylinder body in through hole, the two of circular cylinder body
End is respectively communicated to the both sides of the baffle, and is equipped with metal mandrel in circular cylinder body, has between circular cylinder body and metal mandrel
Voltage difference, meanwhile, it is filled with catalysis material in circular cylinder body;
The photocatalysis module includes the 3rd housing, is equipped with ultraviolet lamp in the 3rd housing and separates the photocatalysis module
Inlet end and the metal mesh of outlet side, are loaded with titanium dioxide on the metal mesh.
The catalysis material is honeycomb substrate.
Voltage difference between the circular cylinder body and metal mandrel is 5-40KV.
The metal mesh is the multilayer being arranged side by side, and ultraviolet lamp is between adjacent metal net.
Filling proportion of the catalysis material of filling in the cavity of corresponding circular cylinder body in the circular cylinder body, according to sky
Between be calculated as 10-50%.
Ozone catalytic module is equipped between the plasma-catalytic module and photocatalysis module.
The ozone catalytic module includes the second housing, close to the ozone catalytic module in the inner cavity which is formed
The position of inlet end be equipped with pipe-line mixer, and be connected with ozone generator, meanwhile, leaned in the inner cavity which is formed
The position of the outlet side of the nearly ozone catalytic module is equipped with ozone catalysing material.
The ozone catalysing material is manganese oxide octahedral molecular sieve.
Transition metal or rare earth metal are loaded with the manganese oxide octahedral molecular sieve.
The ozone concentration that the ozone generator produces is 100-2000ppm.
The utility model is compared to the prior art advantageously:The ability for handling organic exhaust gas is preferable.This practicality
The multistage catalytic oxidation treatment device of new organic exhaust gas is directed to the organic exhaust gas of complicated component, real respectively with different modules
The chain rupture of existing organic molecule, decompose, and intermodule synergistic effect improves treatment effeciency.Meanwhile the module group of different oxidabilities
Close, expand the scope of application of the purifier.And peace can be combined to partial function module in a manner of modularization assembling
Dress decomposes, and freely increases or decreases module number, use is more convenient.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples:
Fig. 1 is the composition figure of the embodiment 1 of the utility model;
Fig. 2 is A-A direction views of Fig. 1;
Fig. 3 is B-B direction views of Fig. 1;
Fig. 4 is the composition figure of the embodiment 2 of the utility model.
In figure:
10th, primary filter module;
20th, plasma-catalytic module, the 201, first housing, 21, baffle, 221, circular cylinder body, 222, metal mandrel,
23rd, catalysis material;
30th, ozone catalytic module, the 301, second housing, 302, pipe-line mixer, 31, ozone generator, 32, ozone catalytic
Material;
40th, photocatalysis module, the 401, the 3rd housing, 41, ultraviolet lamp, 42, metal mesh.
Embodiment
Embodiment 1
As shown in Fig. 1 to Fig. 3:The multistage catalytic oxidation treatment device of organic exhaust gas, including:Primary filter module 10, etc.
The modules such as gas ions catalytic module 20, photocatalysis module 40.
Specifically:
Organic exhaust gas enters the inlet end of the primary filter module 10, and the outlet side of the primary filter module 10 is connected to this
The inlet end of plasma-catalytic module 20, the outlet side of the plasma catalytic module 20 are connected to the photocatalysis module 40
Inlet end, and the photocatalysis module 40 has outlet side.That is, organic exhaust gas successively by the primary filter module 10, etc. from
Daughter catalytic module 20, photocatalysis module 40, are then discharged.
More specifically:
The primary filter module 10 can use common structure and mode, and main filtration falls the dust in organic exhaust gas
Grain, fluffy solid etc..
The plasma catalytic module 20 includes the first housing 201.It is equipped with first housing 201 and separates the plasma
The inlet end of catalytic module 20 and the baffle 21 of outlet side, the baffle 21 are equipped with some through holes, circular cylinder are fixed with through hole
Body 221, the both ends of circular cylinder body 221 are respectively communicated to the both sides of the baffle 21.That is, organic exhaust gas must be from circular cylinder body 221
Interior process.Metal mandrel 222 is equipped with circular cylinder body 221, there is voltage difference between circular cylinder body 221 and metal mandrel 222.Gold
Belong to the inevitable not accessible corresponding circular cylinder body 221 of plug 222, such as, metal mandrel 222 is located at corresponding circular cylinder body 221
Axial line on.In the present embodiment, the voltage difference between circular cylinder body 221 and corresponding metal mandrel 222 is 5-40KV.Than
Such as, voltage difference 5KV, 20KV or 40KV.Meanwhile it is filled with catalysis material 23 in circular cylinder body 221.In the present embodiment, this is urged
Change material 23 is honeycomb substrate.Such as using the cellular oxidative aluminum for being loaded with nickel oxide catalyst, or using titanium dioxide
The cellular materials such as silicon, aluminium oxide, activated carbon.The catalysis material 23 is the cellular oxidative aluminum for being loaded with nickel oxide catalyst.
Filling proportion of the catalysis material 23 of filling in the cavity of corresponding circular cylinder body 221, is counted according to space in circular cylinder body 221
Calculate as 10-50%.For example the catalysis material 23 filled in circular cylinder body 221 is in the cavity of corresponding circular cylinder body 221
Filling proportion, 10%, 20%, 30%, 40% or 50% is calculated as according to space.In this way, organic exhaust gas molecule is in plasma
With chain rupture, decomposition under the synergistic effect of catalysis material 23, simple labile molecule is directly oxidized to CO2And H2O, can not be thorough
The molecule that bottom is decomposed forms accessory substance and enters next module.
The photocatalysis module 40 includes the 3rd housing 401.Ultraviolet lamp 41 is equipped with 3rd housing 401 and separates the light
The inlet end of catalytic module 40 and the metal mesh 42 of outlet side, are loaded with titanium dioxide on the metal mesh 42.So-called metal mesh 42
Separate inlet end and the outlet side of the photocatalysis module 40, refer to that gas must be all by metal mesh 42.In the present embodiment,
Metal mesh 42 is the multilayer being arranged side by side, and ultraviolet lamp 41 is between adjacent metal net 42.In this way, ultraviolet and titanium dioxide
Effect produces hydroxyl radical free radical isoreactivity group, and the organic exhaust gas and a upper module that further catalysis oxidation enters may be remaining
Ozone, eventually passes through the collective effect of three kinds of catalytic modules so that discharge after organic exhaust gas is up to standard.
Embodiment 2
With differing only in for embodiment 1:With reference to shown in Fig. 4, plasma-catalytic module 20 and photocatalysis module 40 it
Between be equipped with ozone catalytic module 30.That is, the outlet side of the plasma catalytic module 20 connect the ozone catalytic module 30 into
Gas end, the outlet side of the ozone catalytic module 30 connect the inlet end of the photocatalysis module 40.
In the present embodiment, which includes the second housing 301.In the inner cavity that second housing 301 is formed
Pipe-line mixer 302 is equipped with close to the position of the inlet end of the ozone catalytic module 30, and is connected with ozone generator 31.Generally
For, inlet end of 31 junction of ozone generator relative to the pipe-line mixer 302 closer to the ozone catalytic module 30.
The effect of the pipe-line mixer 302 is to make organic exhaust gas mix with ozone to be more uniformly distributed.In the inner cavity that second housing 301 is formed
Ozone catalysing material 32 is equipped with close to the position of the outlet side of the ozone catalytic module 30.The ozone catalysing material 32 can use
For manganese oxide octahedral molecular sieve.More preferably, transition metal or rare earth metal are loaded with the manganese oxide octahedral molecular sieve.Should
The ozone concentration that ozone generator 31 produces is 100-2000ppm.For example the ozone concentration that the ozone generator 31 produces is
100ppm, 500ppm, 1000ppm, 1500ppm or 2000ppm.
In this way, the ozone that produces of gas and ozone generating-device 31 the inner cavity that second housing 301 is formed leading portion into
Contacted after row mixing and pre-oxidation with ozone catalysing material 32, the synergistic effect of ozone and ozone catalysing material 32 produces energy of oxidation
Enter photocatalysis module 40 after the further degradation organic waste gas of group such as the stronger epoxide free radical of power, Superoxide anion free radical,
So as to which disposal ability is stronger, better.
In conclusion the multistage catalytic oxidation treatment device of the organic exhaust gas of the utility model is for the organic of complicated component
Exhaust gas, realizes the chain rupture of organic molecule with different modules, decomposes, intermodule synergistic effect improves treatment effeciency respectively.Together
When, the block combiner of different oxidabilities, expands the scope of application of the purifier.And can be in a manner of modularization assembling
Installation or decomposition are combined to partial function module, freely increase or decrease module number, use is more convenient.
The above is only the preferred embodiment of the present invention, and it does not limit the scope of the patent of the present invention,
Every equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is directly or indirectly transported
Used in other related technical areas, it is equally included in the patent within the scope of the utility model.