CN110407177A - A method of promote ozone to generate - Google Patents
A method of promote ozone to generate Download PDFInfo
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- CN110407177A CN110407177A CN201910740888.5A CN201910740888A CN110407177A CN 110407177 A CN110407177 A CN 110407177A CN 201910740888 A CN201910740888 A CN 201910740888A CN 110407177 A CN110407177 A CN 110407177A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/10—Preparation of ozone
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Abstract
The present invention relates to a kind of methods that promotion ozone generates, oxygenous gas is generated ozone through ultraviolet light by the method, passed through catalyst bed later, so that ozone generates concentration and is obviously improved, the method of the invention can effectively improve the ozone in the gas after ultraviolet light and generate concentration, generating concentration by ozone in the gas of catalyst bed is not generate 1.14-1.4 times of concentration by ozone in the gas of catalyst bed, and the operating method of the method for the invention is simple, equipment cost is low, low energy consumption, and it can be quickly, it is stably obtained the gas of specific ozone concentration.
Description
Technical field
The invention belongs to ozone to generate field more particularly to a kind of method for promoting ozone to generate.
Background technique
Ozone, chemical molecular formula O3, also known as three elemental oxygens, super oxygen are gained the name because of its stink similar to fishlike smell, normal
Oxygen can be voluntarily reduced under temperature.Specific gravity is bigger than oxygen, soluble easily in water, easily decomposes.Since ozone is to carry one by oxygen molecule
Oxygen atom composition, determines that it is a kind of temporary state, for the oxygen atom of carrying in addition to oxidation is used up, remaining and group is combined into oxygen
Gas enters stable state.
Ozone is widely used, and most of organic pigments can be made to fade.Rubber, cork can be slowly corroded, organic unsaturation is made
Compound is oxidized.Be usually used in: the disinfection and sterilization of beverage, air cleaning, bleaching, water process and disinfection of drinking water, silo are killed
Mould and worm's ovum；It being reacted with organic unsaturates, produces ozonide, these ozonides can decompose in presence of water,
Unsaturated bond open chain originally generates aldehyde, ketone and carboxylic acid etc..
Ozone has extremely strong oxidisability and bactericidal property, is one of strongest oxidant of nature, and oxidation is gone back in water
Former current potential is only second to fluorine and occupies second.Meanwhile the product after ozone reaction is oxygen, so ozone is efficiently without secondary dirt
The oxidant of dye.As strong oxidizer.The application foundation of ozone is its extremely strong oxidability and sterilizing ability.The application of ozone
Classification is acted on by it, can be divided into: sterilization, decoloration, deodorization, deodorization and oxygenolysis.By its application field point, be mainly used in
Lower field: water process；It is food processing, storage, fresh-keeping；Household electrical appliance；Health care；Chemical oxidation.
Currently, the common ozoniferous method of production has: (1) ultraviolet irradiation method is irradiated dry oxygen using ultraviolet light, makes one
Part oxygen molecule, which is activated, is dissociated into oxygen atom, and then forms ozone.(2) electrolysis method carries out electricity to water using low-voltage DC
Solution makes water that oxidation reaction occur on anode-solution interface and generates ozone.The ozone preparation facilities is by electrolyte solution and yin-yang
The two poles of the earth are constituted.Ozone is precipitated in anode.(3) dielectric barrier discharge method generates corona by alternation high voltage electric field in gas, electricity
Free high energy electron dissociation oxygen molecule in dizzy is polymerized to ozone molecule through collision.Ultraviolet irradiation method is the common system in laboratory
A kind of method of standby ozone, but its ozone generation concentration obtained is generally lower.
Therefore, developing a kind of can effectively promote the method that ozone in the gas after ultraviolet light generates concentration and still have
Significance.
Summary of the invention
The purpose of the present invention is to provide a kind of methods that promotion ozone generates, and the method is by oxygenous gas through purple
Ozone is generated after outer light irradiation, later by it by catalyst bed, so that ozone generates concentration and is obviously improved, it is of the present invention
Method can effectively improve the ozone in the gas after ultraviolet light and generate concentration, pass through ozone in the gas of catalyst bed
1.14-1.4 times of ozone generation concentration in gas of the generation concentration not pass through catalyst bed, and the method for the invention
Operating method is simple, and equipment cost is low, and low energy consumption, and can gas that is quick, being stably obtained specific ozone concentration.
In order to achieve that object of the invention, the invention adopts the following technical scheme:
In a first aspect, the described method comprises the following steps the present invention provides a kind of method that promotion ozone generates:
(1) oxygenous gas is irradiated under ultraviolet light；
(2) gas by step (1) after ultraviolet light obtains ozone and generates what concentration was promoted by catalyst bed
Gas.
Ultraviolet light lead to the problem of ozone there are ozone generate concentration it is low, the method for the invention will be through ultraviolet lighting
By catalyst bed, the catalyst bed can interact gas after penetrating with the ingredient in gas, accelerate ozone
Generating rate, so that improving ozone in finally obtained gas generates concentration.
Traditional ultraviolet light generallys use the method for increasing ultraviolet light irradiation power during generating ozone, thus
It improves ozone and generates concentration, there is the larger problem of energy consumption, and equipment cost is higher, the method for the invention is by will be through
Gas after ultraviolet light is by catalyst bed, so that ozone generates concentration and significantly improves, to solve conventional ultra-violet
The ozone that line irradiation generates generates the low problem of concentration, while reduced energy consumption, has saved equipment cost.
Preferably, step (1) the oxygenous gas includes oxygen and/or air.
Preferably, step (2) described catalyst includes appointing in silica, aluminium oxide, boehmite or molecular sieve
It anticipates a kind of or at least two combinations, combination, the silica including aluminium oxide and boehmite of the combination examples
The combination etc. of combination or boehmite and molecular sieve with aluminium oxide, preferably boehmite and/or aluminium oxide.
When the method for the invention uses aluminium oxide and/or boehmite, the promotion for generating concentration to ozone is bigger,
To be more advantageous to obtain higher concentration containing ozone gas.
Preferably, the gas described in step (2) after ultraviolet light by the air speed of catalyst bed≤
600000h-1, such as 100000h-1、200000h-1、300000h-1、400000h-1、500000h-1Or 550000h-1Deng preferably
For 500000~600000h-1。
The air speed that gas described in the method for the invention step (2) after ultraviolet light passes through catalyst bed is
Less than 600000h-1, work as air speed > 600000h-1, the time of contact of gas and catalyst is too short, leads to the ozone secondary generation time
Not enough, ozone, which generates concentration, cannot be catalyzed promotion.
Preferably, the granularity of step (2) described catalyst is 20-40 mesh, for example, 20 mesh, 30 mesh, 40 mesh etc., preferably
30-40 mesh.
Preferably, the gas described in step (2) after ultraviolet light by further include before catalyst bed will be described
Gas after ultraviolet light and the gas mixing containing steam and/or hydrogen peroxide.
After gas of the present invention after ultraviolet light and the gas mixing containing steam and/or hydrogen peroxide, then
Into in catalyst bed, it can be further improved ozone and generate concentration, to obtain the ozone of higher concentration.It uses aluminium oxide
When as catalyst, the promotion better effect for generating concentration to ozone is significant, therefore, to obtain the ozone of higher concentration, this
Invention preferably passes through aluminium oxide after by the gas after ultraviolet light and the gas mixing containing steam and/or hydrogen peroxide
Catalyst bed as catalyst.
Preferably, the body of the gas after ultraviolet light and the gas mixing containing steam and/or hydrogen peroxide
Product is than being 1:(3-5), such as 1:3.5,1:4 or 1:4.5 etc..
The method of the invention controls the gas after ultraviolet light irradiates and the gas containing steam and/or hydrogen peroxide
The volume ratio of body is 1:3~1:5, is conducive to the generation of ozone, when the ozone that volume ratio < 1:5, ultraviolet irradiation are generated, concentration
It is largely diluted, increment is unobvious；As volume ratio > 1:3, it is unknown that the auxiliary ozone of steam and hydrogen peroxide generates effect
It is aobvious, without significantly ozone being promoted to generate effect.
Preferably, the gas containing steam and/or hydrogen peroxide includes the gas containing steam, the gas containing hydrogen peroxide
Body and gas containing steam and hydrogen peroxide.
Preferably, in the gas containing steam steam concentration be 0-0.54%, be free of 0, such as 0.1%, 0.2%,
0.31%, 0.35%, 0.4%, 0.45%, 0.50%, 0.53% or 0.55% etc., preferably 0.31-0.54%.
The volumetric concentration that the method for the invention controls steam in the gas containing steam is 0-0.54%, is free of 0, favorably
In the secondary generation of ozone.
Preferably, the volumetric concentration of hydrogen peroxide is 0-0.1% in the gas containing hydrogen peroxide, without 0, such as
0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08% or 0.09% etc., preferably 0.03-
0.06%.
The volumetric concentration of hydrogen peroxide is 0-0.1% in gas in the method for the invention containing hydrogen peroxide, is logical
Cross the vapour concentration that conventional hydrogenperoxide steam generator can reach, and its secondary generation for being more advantageous to ozone.
Preferably, the concentration of steam and hydrogen peroxide and be 0-0.64% in the gas containing steam and hydrogen peroxide,
Without 0, such as 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.55%, 0.56%, 0.57%, 0.58% or
0.59% etc., preferably 0.34-0.6%.
Preferably, the gas containing steam and/or hydrogen peroxide is by being passed through aqueous and/or peroxide for inert gas
Change and is obtained in the solution of hydrogen.
Preferably, the inert gas include in nitrogen, helium or argon gas any one or at least two combination, institute
Stating combination is the combination including nitrogen and helium of rationality, the combination of nitrogen and argon gas or helium and the combination of argon gas etc..
Preferably, the temperature of aqueous and/or hydrogen peroxide solution is 25-35 DEG C, such as 26 DEG C, 28 DEG C, 30 DEG C, 32 DEG C
Or 34 DEG C etc..
Preferably, the power of the fluorescent tube used of step (1) described ultraviolet light is >=18 watts, such as 20 watts, 25 watts, 30
Watt, 35 watts, 40 watts, 45 watts or 50 watts etc., preferably 18-40 watts.
Ultraviolet light of the present invention is generated by ultraviolet lamp tube, and the power of the above-mentioned fluorescent tube limited is made to generate ultraviolet light
The power of ultraviolet lamp tube.
Preferably, the wavelength of the ultraviolet light be 100-300nm, such as 11nm, 130nm, 150nm, 170nm, 180nm,
185nm, 190nm, 200nm, 220nm, 250nm, 270nm or 290nm etc., preferably 180-185nm.
Preferably, the time of step (1) described ultraviolet light is 1-10s, such as 2s, 4s, 6s or 8s etc., preferably 1-
4s, further preferably 2-3s.
Preferably, generating concentration by ozone in the gas after catalyst bed in step (2) is to pass through catalyst bed
Ozone generates 1.14 times -1.4 times of concentration, such as 1.18 times, 1.2 times, 1.25 times, 1.3 times or 1.35 times etc. in preceding gas.
As currently preferred technical solution, the described method comprises the following steps:
(1) oxygen and/or air are irradiated into 1-4s in the case where wavelength is the ultraviolet light of 180-185nm, obtained through ultraviolet lighting
Gas after penetrating；
(2) gas in step (1) after ultraviolet light is obtained ozone and generates concentration promotion by catalyst bed
Gas, the gas after ultraviolet light is 500000~600000h by the air speed of catalyst bed-1；
Or by step (1) after ultraviolet light gas and the gas mixing containing steam and/or hydrogen peroxide, institute
The volume ratio for stating the gas after ultraviolet light and the gas mixing containing steam and/or hydrogen peroxide is 1:(3-5), later
By catalyst bed, obtains ozone and generate the gas that concentration is promoted.
Second aspect, the present invention provides a kind of method of adjusting ozone concentration in the gas after ultraviolet light, institutes
The method of stating includes using the method as described in first aspect.
The method of the invention passes through catalyst bed by the type and the gas after ultraviolet light for adjusting catalyst
Layer air speed or with the mixing ratio containing steam and/or the gas mixing of hydrogen peroxide, thus adjust ozone generate concentration promoted
The concentration of ozone in gas afterwards, so that control obtains the ozone of certain concentration.
Compared with the existing technology, the invention has the following advantages:
(1) the method for the invention will be by that will pass through catalyst bed through the gas after ultraviolet light, so that ozone is raw
It is obviously improved at concentration, after the gas after ultraviolet light passes through catalyst bed, ozone is raw in obtained gas
It is not generate 1.14-1.4 times of concentration by ozone in the gas of catalyst bed at concentration, to solve ultraviolet light
The ozone of generation generates the low problem of concentration；
(2) operating process of the method for the invention is simple, and the type by adjusting catalyst is able to achieve to by urging
Ozone after agent bed generates the regulation of concentration, to obtain the ozone of certain concentration；
(3) operating cost of the method for the invention is low, and low energy consumption.
Detailed description of the invention
Fig. 1 is ozone concentration versus time curve in gas that the embodiment of the present invention 1 and comparative example 1 obtain；
Fig. 2 is ozone concentration versus time curve in gas that the embodiment of the present invention 2 and comparative example 2 obtain；
Fig. 3 is ozone concentration versus time curve in gas that the embodiment of the present invention 3 and comparative example 1 obtain；
Fig. 4 is ozone concentration versus time curve in gas that the embodiment of the present invention 4 and comparative example 2 obtain；
Fig. 5 is ozone concentration versus time curve in gas that the embodiment of the present invention 5 and comparative example 1 obtain；
Fig. 6 is ozone concentration versus time curve in gas that the embodiment of the present invention 6 and comparative example 2 obtain.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation.Those skilled in the art should be bright
, the described embodiments are merely helpful in understanding the present invention, should not be regarded as a specific limitation of the invention.
Experiment reagent illustrates: the purity for the high pure nitrogen that specific embodiment of the invention part uses is greater than 99.99%；It is high
The purity of purity oxygen is 99.99%.
Embodiment 1
Promote the method that ozone generates concentration:
(1) with mass flowmenter control 240mL/min high purity oxygen gas be passed through quartzy runner pipe (12 millimeters of diameter, length
10cm), the ultraviolet lamp of external two 40 watts of 185nm wavelength is irradiated excitation ozone to circulation oxygen and generates；
(2) gas of step (1) is mixed with the high pure nitrogen that flow is 960mL/min, total gas flow rate is after mixing
1200mL/min；
(3) the mixed gas for obtaining step (2) is 8mm by diameter, and length is the crystal reaction tube of 10cm, reaction
Pipe is provided with the boehmite particle of 0.1g 20-40 mesh, obtains ozone and generates the gas that concentration is promoted.
Ozone concentration is examined by U.S. 2B ozone analyzer (standard method of test of UV absorption) real-time online in gas
It surveys.
Embodiment 2
Ozone generates the method that concentration is promoted:
(1) with mass flowmenter control 240mL/min high purity oxygen gas be passed through quartzy runner pipe (12 millimeters of diameter, length
10cm), the ultraviolet lamp of external two 40 watts of 185nm wavelength is irradiated excitation ozone to circulation oxygen and generates；
(2) high pure nitrogen is first passed through with the flow of 700mL/min to bring into the deionized water evaporator of 35 DEG C of constant temperature
Steam obtains the high pure nitrogen with steam, and wherein vapour concentration is 0.54%；
(3) by step (1) after ultraviolet light irradiation gas and step (2) obtained high pure nitrogen with steam and
In addition the high pure nitrogen mixing of 260mL/min, control total flow are 1200mL/min；
(4) the mixed gas for obtaining step (3) is 8mm by diameter, and length is the crystal reaction tube of 10cm, reaction
Pipe is provided with the boehmite particle of 0.1g 20-40 mesh, obtains ozone and generates the gas that concentration is promoted.
Moisture content measures calibration (room temperature, relative humidity 60%) by hygrometer.Ozone concentration is also by smelly under this condition
Oxygen analyzer the real time measure.
Embodiment 3
The present embodiment the difference from embodiment 1 is that, the boehmite particle of 0.1g 20-40 mesh in step (3) is replaced
It is changed to the alumina particle of 0.1g 20-40 mesh, other conditions are identical compared with Example 1.
Embodiment 4
The present embodiment the difference from example 2 is that, the boehmite particle of 0.1g 20-40 mesh in step (4) is replaced
It is changed to the alumina particle of 0.1g 20-40 mesh, other conditions are identical compared with Example 2.
Embodiment 5
The present embodiment the difference from embodiment 1 is that, the boehmite particle of 0.1g 20-40 mesh in step (3) is replaced
It is changed to the beta-molecular sieve particle (beta-molecular sieve is silica zeolite) of 0.1g 20-40 mesh, other conditions are compared with Example 1
It is identical.
Embodiment 6
The present embodiment the difference from example 2 is that, the boehmite particle of 0.1g 20-40 mesh in step (4) is replaced
It is changed to the beta-molecular sieve particle (beta-molecular sieve is silica zeolite) of 0.1g 20-40 mesh, other conditions are compared with Example 2
It is identical.
Embodiment 7
The present embodiment the difference from example 2 is that, the deionized water of 35 DEG C of constant temperature is replaced with into 35 DEG C of perseverances in step (2)
The hydrogenperoxide steam generator (30wt%) of temperature, obtains the gas containing steam and hydrogen peroxide, the volumetric concentration of steam in the gas
It is 0.54%, the volumetric concentration of hydrogen peroxide is 0.06% in the gas, and other conditions are identical compared with Example 2.
Ozone concentration is 62ppm in the mixed gas that the present embodiment step (4) obtains.
Comparative example 1
This comparative example the difference from embodiment 1 is that, without catalyst in reaction tube in step (3), other conditions and implement
Example 1 is compared to identical.
Comparative example 2
This comparative example the difference from example 2 is that, without catalyst in reaction tube in step (4), other conditions and implement
Example 2 is compared to identical.
Comparative example 3
The present embodiment and the difference of comparative example 2 are, the deionized water of 35 DEG C of constant temperature is replaced with 35 DEG C in step (2)
Hydrogenperoxide steam generator (30wt%), other conditions are identical compared with comparative example 2.
Ozone concentration is 50ppm in the mixed gas that this comparative example step (4) obtains.
Comparative example 4
The difference of this comparative example and comparative example 2 is, ultraviolet lamp tube is not used to irradiate high purity oxygen gas in step (1)；And it is sharp
Generate ozone with dielectric barrier discharge high purity oxygen gas (Beijing is with woods ozone generator).Other steps are complete compared with comparative example 2
It is identical, i.e., the steam gaseous mixture of nitrogen and comparative example 2, the whole flow of balanced gas are mixed later.The result shows that dielectric impedance
The ozone that electric discharge generates generates concentration and is not obviously improved.
Comparative example 5
The difference of this comparative example and comparative example 1 is that filling cryptomelane manganese dioxide is catalyzed in reaction tube in step (3)
Agent (typical ozone decomposition catalyst), other conditions are identical compared with Example 1.Ozone concentration on-line checking result table
Bright, ozone is completely broken down, and can't detect ozone.Illustrate that catalyst is most important in ozone build environment, unfavorable catalysis
The decomposition that will lead to ozone is loaded in agent.
The result of comparative example 7 and comparative example 3 can be seen that the method for the invention for the gas after ultraviolet light
Body is mixed with the high pure nitrogen containing steam and hydrogen peroxide, passes through catalyst bed later, it is obvious that the ozone of gas generates concentration
It is promoted；Meanwhile comparative example 1 and comparative example 3 are compared as can be seen that by the gas after ultraviolet light and containing steam and peroxidating
The gas mixing of hydrogen, ozone generate concentration and are obviously improved.
The ozone concentration for the mixed gas that the step of embodiment of the present invention 1 and comparative example 1 (3) obtains changes with time figure
As shown in Figure 1, as seen from the figure, boehmite generates the solid phase auxiliary agent of concentration as ozone in lift gas, to warp
The promotion that ozone generates concentration in gas after ultraviolet light has apparent facilitation, and its own does not lose, real
The concentration for applying ozone in the mixed gas, using boehmite as catalyst, obtained in example 1 is ozone concentration in comparative example 1
1.25 times.
The ozone concentration in mixed gas that the step of embodiment of the present invention 2 and comparative example 2 (4) obtains changes with time
Figure is as shown in Fig. 2, as seen from the figure, boehmite generates the solid phase auxiliary agent of concentration as ozone in lift gas, right
Ozone generates the promotion of concentration in the mixed gas that gas after ultraviolet light and the inert gas containing steam are mixed to form
With the effect that is obviously promoted, and its own does not lose, using boehmite as catalyst in embodiment 2, mixed gas
The concentration of middle ozone is 1.22 times of ozone concentration in comparative example 2.
The step of ozone concentration for the mixed gas that (3) obtain the step of comparative example 1 in comparison diagram 1 and Fig. 2 and comparative example 2
(4) ozone concentration of the mixed gas obtained, it can be seen that by the gas after ultraviolet light and contain the indifferent gas of steam
Body mixing, ozone concentration are significantly improved compared with the ozone concentration that comparative example 1 obtains.
The ozone concentration for the mixed gas that the step of embodiment of the present invention 3 and comparative example 1 (3) obtains changes over time curve
As shown in figure 3, as seen from the figure, aluminium oxide generates the solid phase auxiliary agent of concentration as ozone in lift gas, to through ultraviolet
The promotion that ozone generates concentration in gas after light irradiation has apparent facilitation, and its own does not lose, embodiment 3
In using aluminium oxide as catalyst, the concentration of ozone is 1.35 times of ozone concentration in comparative example 1 in obtained mixed gas.
The ozone concentration in mixed gas that the step of embodiment of the present invention 4 and comparative example 2 (4) obtains changes with time
Figure is as shown in figure 4, as seen from the figure, aluminium oxide generates the solid phase auxiliary agent of concentration as ozone in lift gas, to through purple
The promotion that ozone generates concentration in the mixed gas that gas after outer light irradiation is mixed to form with the inert gas containing steam has
It is obviously promoted effect, and its own does not lose, using aluminium oxide as catalyst in embodiment 4, ozone in mixed gas
Concentration is 1.3 times of ozone concentration in comparative example 2.
The ozone concentration for the mixed gas that the step of embodiment of the present invention 5 and comparative example 1 (3) obtains changes over time curve
As shown in figure 5, as seen from the figure, beta-molecular sieve generates the solid phase auxiliary agent of concentration as ozone in lift gas, to through ultraviolet
The promotion that ozone generates concentration in gas after light irradiation has apparent facilitation, and its own does not lose, embodiment 5
In using beta-molecular sieve as catalyst, the concentration of ozone is 1.30 of ozone concentration in comparative example 1 in obtained mixed gas
Times.
The ozone concentration in mixed gas that the step of embodiment of the present invention 6 and comparative example 2 (4) obtains changes with time
Curve is as shown in fig. 6, as seen from the figure, beta-molecular sieve generates the solid phase auxiliary agent of concentration as ozone in lift gas, to warp
The promotion that ozone generates concentration in the mixed gas that gas after ultraviolet light and the inert gas containing steam are mixed to form has
It is obviously promoted effect, and its own does not lose, using beta-molecular sieve as catalyst in embodiment 6, ozone in mixed gas
Concentration be 1.14 times of ozone concentration in comparative example 2.
Boehmite, aluminium oxide and beta-molecular sieve under dry atmosphere or contain steam it can be seen from analyzing above
And/or can promote the generation of ozone under the atmosphere of hydrogen peroxide, to improve the concentration of ozone in gas, and catalyst is preferred
For aluminium oxide and/or boehmite.
The Applicant declares that the foregoing is merely a specific embodiment of the invention, but protection scope of the present invention not office
It is limited to this, it should be clear to those skilled in the art, any to belong to those skilled in the art and take off in the present invention
In the technical scope of dew, any changes or substitutions that can be easily thought of, and all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. a kind of method for promoting ozone to generate, which is characterized in that the described method comprises the following steps:
(1) oxygenous gas is irradiated under ultraviolet light；
(2) gas by step (1) after ultraviolet light obtains ozone and generates the gas that concentration is promoted by catalyst bed
Body.
2. the method as described in claim 1, which is characterized in that step (1) the oxygenous gas includes oxygen and/or sky
Gas；
Preferably, step (2) described catalyst includes any one in silica, aluminium oxide, boehmite or molecular sieve
Kind or at least two combination, preferably boehmite and/or aluminium oxide；
Preferably, air speed≤600000h that step (2) gas after ultraviolet light passes through catalyst bed-1, preferably
For 500000~600000h-1；
Preferably, the granularity of step (2) described catalyst is 20-40 mesh.
3. the method as described in claim 1, which is characterized in that the gas described in step (2) after ultraviolet light passes through
It further include that gas by described after ultraviolet light is mixed with the gas containing steam and/or hydrogen peroxide before catalyst bed
It closes.
4. method as claimed in claim 3, which is characterized in that the gas after ultraviolet light with containing steam and/
Or the volume ratio of the gas mixing of hydrogen peroxide is 1:(3-5).
5. the method as claimed in claim 3 or 4, which is characterized in that the gas containing steam and/or hydrogen peroxide includes
Gas containing steam, the gas containing hydrogen peroxide and the gas containing steam and hydrogen peroxide；
Preferably, the concentration of steam is 0-0.54% in the gas containing steam, is free of 0, preferably 0.31-0.54%；
Preferably, the concentration of hydrogen peroxide is 0-0.1% in the gas containing hydrogen peroxide, is free of 0, preferably 0.03-
0.06%；
Preferably, the concentration of steam and hydrogen peroxide and be 0-0.64% in the gas containing steam and hydrogen peroxide, is free of
0, preferably 0.34-0.6%；
Preferably, the concentration of steam and hydrogen peroxide ratio is (9-10) in the gas containing steam and hydrogen peroxide: 1.
6. the method according to claim 1 to 5, which is characterized in that the fluorescent tube that step (1) described ultraviolet light uses
Power >=18 watt, preferably 18-40 watts.
7. as the method according to claim 1 to 6, which is characterized in that the wavelength of step (1) described ultraviolet light is 100-
300nm, preferably 180-185nm.
8. the method according to claim 1 to 7, which is characterized in that the time of step (1) described ultraviolet light is
1-10s, preferably 1-4s, further preferably 1-3s.
9. the method according to claim 1, which is characterized in that the described method comprises the following steps:
(1) oxygen and/or air are irradiated into 1-4s in the case where wavelength is the ultraviolet light of 180-185nm, obtained after ultraviolet light
Gas；
(2) gas in step (1) after ultraviolet light is obtained ozone and generates the gas that concentration is promoted by catalyst bed
Body, the air speed that the gas after ultraviolet light passes through catalyst bed are 500000~600000h-1；
Or by step (1) after ultraviolet light gas and the gas mixing containing steam and/or hydrogen peroxide, the warp
The volume ratio of gas after ultraviolet light and the gas mixing containing steam and/or hydrogen peroxide is 1:(3-5), pass through later
Catalyst bed obtains ozone and generates the gas that concentration is promoted.
10. a kind of adjusting method that ozone generates concentration in the gas after ultraviolet light, which is characterized in that the method packet
It includes using method as claimed in any one of claims 1-9 wherein.
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