CN108554166A - A kind of method that vacuum ultraviolet joint ozone catalytic removes formaldehyde - Google Patents

A kind of method that vacuum ultraviolet joint ozone catalytic removes formaldehyde Download PDF

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Publication number
CN108554166A
CN108554166A CN201810217121.XA CN201810217121A CN108554166A CN 108554166 A CN108554166 A CN 108554166A CN 201810217121 A CN201810217121 A CN 201810217121A CN 108554166 A CN108554166 A CN 108554166A
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ozone
gas
activated carbon
vacuum ultraviolet
preparation
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黄健
杨颖洁
黄心雨
林伟东
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Guangxi Jirui Safe Technology Ltd
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Guangxi Jirui Safe Technology Ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002—Mixed oxides other than spinels, e.g. perovskite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/32—Manganese, technetium or rhenium
    • B01J23/34—Manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/10—Oxidants
    • B01D2251/104—Ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4508—Gas separation or purification devices adapted for specific applications for cleaning air in buildings
    • 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 belongs to polluted gas processing technology fields, specifically provide a kind of method that vacuum ultraviolet joint ozone catalytic removes formaldehyde, include the following steps：（1）Exhaust gas enters gas mixer chamber and oxygen mix after pre-treatment pond dust removal humidification；（2）Mixed gas issues angry phase reaction in the ultraviolet light of vacuum ultraviolet photodissociation device, obtains ozone and amounts of residual contamination；（3）Ozone further decomposes amounts of residual contamination under the catalyst action in ozone catalytic device, coordinates the suction-operated of activated carbon, further purifying formaldehyde.Adsorption treatment is combined by this method with technologies such as vacuum ultraviolet technology, ozone catalytics, passes through the MnO in tapioca matrix activated carbon area load high efficiency, low cost with abundant pore space structure2、TiO2Catalyst forms " adsoption catalysis " integral structure, and is aoxidized with vacuum ultraviolet technology combination synergy ozone, realizes the effective degradations of the pernicious gases under normal temperature environment such as formaldehyde.

Description

A kind of method that vacuum ultraviolet joint ozone catalytic removes formaldehyde
Technical field
The invention belongs to polluted gas processing technology fields, specifically provide a kind of vacuum ultraviolet joint ozone catalytic and go The method of formaldehyde.
Background technology
Now, room air pollution has become " the stealthy killer " for endangering human health, and it is common also to become whole world various countries The problem of concern.Wherein, formaldehyde is that major pollutants in family are newly fitted up in China, is mainly derived from construction material, furniture, people Make plank, various binder coating and synthesis textile etc..Formaldehyde can enter human body through a variety of ways, as diet, breathing, Skin etc., people suck for a long time can bring the various breathing problems such as dizzy, cough, vomiting, asthma, can also cause when serious white The various cancers such as blood disease, nasopharyngeal carcinoma, brain tumor, nasal sinus cancer.
Techniques for Indoor Air Purification is divided into four major class, i.e. physical cleaning at present（It is gas absorption, filtering, anion fine-purification, low Isothermal plasma purifies）, biotechnology, photocatalyst catalysis, catalysis oxidation.Due to the complexity of room air pollution, these four Treatment technology has respective limitation.Wherein, catalytic oxidation has degradation efficiency compared with traditional formaldehyde minimizing technology The advantages that height, non-secondary pollution.But common catalyst needs to add noble metal, of high cost, and these catalyst generally will be Under higher temperature conditions could complete decomposing formaldehyde, degradation effect is poor under room temperature.
Invention content
The purpose of the present invention is overcoming drawbacks described above, it is purple to provide a kind of vacuum that can be effectively degraded under normal temperature environment The method that outer joint ozone catalytic removes formaldehyde.
Technical scheme of the present invention：A kind of method that vacuum ultraviolet joint ozone catalytic removes formaldehyde, includes the following steps：
（1）Exhaust gas by the dust removal of pre-treatment pond humidification after enter gas mixer chamber, the gas mixer chamber also with regulating valve Oxygen cylinder is connected, and exhaust gas enters vacuum-ultraviolet light solution device with oxygen after gas mixer chamber mixes；
（2）Mixed gas issues angry phase reaction in the ultraviolet light of vacuum ultraviolet photodissociation device, generates a large amount of Strong oxdiative Free radical and ozone substance carry out the pollutant in oxidizing gas mixture, meanwhile, ultraviolet light carries out disinfection to mixed gas, purifies；
（3）By step（2）Processed gas contains ozone and amounts of residual contamination, these gases enter ozone catalytic device into Single step reaction, the interior active carbon layer for being equipped with supported catalyst of the ozone catalytic device, ozone decompose under the effect of the catalyst Go out strong oxidative free radical and reacted with amounts of residual contamination, coordinates the suction-operated of activated carbon, further purification gas residual contamination Object.
Further, step（3）In, the activated carbon is tapioca matrix activated carbon.With routine in the market with coal, coconut palm Shell etc. is different as the basic activated carbon of raw material, the activated activated carbon being prepared of starch highly branched chain, multi-functional structure The oxygen-containing acid surface complex such as a large amount of carboxyl, phenolic group is contained on surface, faintly acid is presented so that this kind of polarity of formaldehyde adsorption The efficiency for closing object is higher, using it as catalyst carrier, forms " absorption-catalysis " integral structure, promotes catalytic effect.
Further, the preparation method of the tapioca matrix activated carbon is as follows：
A, tapioca is dissolved in distilled water, is put into rotating disc type microwave oven and heats 2-4 minutes after stirring evenly, obtain half Transparence colloid；
B, translucent colloid made from step A is gone in hot water reaction kettle, at 200-250 DEG C after addition 60 dispersant of soil temperature It handles 10-12 hours, is then cooled to room temperature in hot water, and hydrothermal product is washed into then drying at a temperature of 100-120 DEG C To constant weight, the spherical hydro-thermal carbon disperseed is burnt；
C, hydro-thermal carbon coke made from step B is put into the NaHSO of 2-3moL/L3In solution, stirred with the rotating speed of 2000rad/min 30-40min is then placed in isothermal reaction 4-5min in micro-wave oven；Then sample is taken out and is used hydrochloric acid and distilled water by sample Washing is dried in the drying box that temperature is 80-120 DEG C to constant weight to neutrality；Dried sample is finally put into high temperature In stove, activation process 1-2h postcoolings at a temperature of 300-400 DEG C obtain tapioca matrix activated carbon.
Further, step（3）In, the catalyst is by MnO2And TiO2By weight（1-2）：（4-5）It compounds. It using the catalyst of compounding, compares and noble metal catalyst, cost can be reduced, and can realize that formaldehyde is degraded at normal temperatures.
Further, the ultraviolet photolysis device includes sealing tubular photodissociation container and ultraviolet in photodissociation container Lamp is also stained with one layer of aluminium-foil paper on the inner wall of the photodissociation container.The setting of aluminium-foil paper, is more advantageous to photolysis.
Further, the ultraviolet lamp is 85w.
Further, the ozone catalytic device includes the work of reaction vessel and the supported catalyst in reaction vessel Property layer of charcoal, the inlet end of the reaction vessel is set to the bottom of reaction vessel, gear is additionally provided at the inlet end of reaction container bottom Flowing plate, the flow-stopping plate include the annular gas permeable column being arranged along inlet end circumferencial direction and the baffle set on ventilative column top, institute It states ventilative column and is equipped with air hole.The setting of flow-stopping plate can be such that gas is more uniformly contacted with active carbon layer, be more advantageous to other Purified treatment.
Further, the outlet side of the reaction vessel is connected with air-introduced machine.Further control the gas in reaction vessel Pressure and reaction efficiency.
Advantage of the present invention：1, adsorption treatment is combined by this method with technologies such as vacuum ultraviolet technology, ozone catalytics, is passed through In the MnO of tapioca matrix activated carbon area load high efficiency, low cost with abundant pore space structure2、TiO2Catalyst, shape It is aoxidized at " absorption-catalysis " integral structure, and with vacuum ultraviolet technology combination synergy ozone, realizes that the pernicious gases such as formaldehyde exist Effective degradation under normal temperature environment.
2, using the multi-active base unity structure of tapioca molecular surface itself, pass through the synthesis such as hydro-thermal method, acid etching processes The tapioca matrix activated carbon of high-ratio surface, the meso-hole structure that aperture is uniform, surface functional group is abundant is provided, and golden with transition Belong to oxide catalyst to combine, forms stable loaded catalyst composite material, effectively improve the removal efficiency of formaldehyde.
3, vacuum ultraviolet technology is combined with ozone catalytic, and optimizes vacuum ultraviolet photodissociation device, ozone catalytic device Etc. processing units structure, different from general ultraviolet generation device, characteristic wavelength and vapor, oxygen act on, can be simultaneously As the pernicious gases such as strong oxidizer hydroxyl radical free radical degradation of formaldehyde are generated, it can also generate ozone and participate in the pernicious gases such as formaldehyde Catalytic oxidation, in addition to this, ultraviolet light itself have the purification of the disinfection to air, and set of device realizes filling for the energy Divide and utilize, saves processing cost.
Description of the drawings
Fig. 1 is the structural schematic diagram that vacuum ultraviolet combines ozone catalytic device；
Fig. 2 is the structural schematic diagram of ozone catalytic device；
Drawing reference numeral in figure is：1- pre-treatments pond, 2- gas mixer chambers, 3- ultraviolet photolysis devices, 4- ozone catalytic devices, 5- Air-introduced machine, 6- oxygen hoses, 7- oxygen cylinders, 8- regulating valves, 9- air inlet pipe, 10- appendixs, 11- guide plates, 12- air inlet pipe run through Hole, 13- photodissociation containers, 14- ultraviolet lamps, 15- reaction vessels, 16- active carbon layers, 17- flow-stopping plates, 171- breathe freely column, 172- gears Plate, 173- air holes, 174- longitudinal holes, 18- aluminium-foil papers, 19- escape pipes, 20- thief hatch, 21- return ducts, the unidirectional gas of 22- Valve.
Specific implementation mode
Present invention will be further explained below with reference to specific examples.
Embodiment 1
A kind of method that vacuum ultraviolet joint ozone catalytic removes formaldehyde, includes the following steps：
1, the preparation of tapioca matrix activated carbon
A, 10kg tapiocas are dissolved in 10L distilled water, high fire heating 2-4 is put into rotating disc type microwave oven after stirring evenly Minute, obtain translucent colloid.
B, translucent colloid made from step A is gone in hot water reaction kettle, after 60 dispersant of addition 1g soil temperatures It handles 10-12 hours, is then cooled to room temperature in 200-250 DEG C of hot water, and then hydrothermal product is washed in 100-120 DEG C of temperature The lower dry spherical hydro-thermal carbon to constant weight, disperseed of degree is burnt.
C, hydro-thermal carbon coke made from step B is put into the NaHSO of 2moL/L3In solution, stirred with the rotating speed of 2000rad/min 35min is mixed, moderate heat isothermal reaction 4-5min in micro-wave oven is then placed in；Then sample is taken out and is used hydrochloric acid and distilled water by sample Product are washed to neutrality, and are dried to constant weight in the drying box that temperature is 80 DEG C；Dried sample is finally put into high temperature furnace In, activation process 1.5h postcoolings, obtain tapioca matrix activated carbon at a temperature of 350 DEG C.
2, composite catalyst is supported on tapioca matrix activated carbon
A, by nano-TiO2Powder is added in the aqueous solution added with ethyl alcohol and stirs evenly, TiO2The weight ratio of powder, second alcohol and water It is 1:6:3.
B, tapioca matrix activated carbon is added in the mixed liquor in a, is taken out after immersion 30min spare.
C, the processed tapioca matrix activated carbons of step b are added in liquor potassic permanganate and continue to take after impregnating 30min Go out to dry.
D, the processed tapioca matrix activated carbons of step c are put into sealing container, are added in 300-400 DEG C of temperature Heat 2 hours, makes TiO2And MnO2It is attached on tapioca matrix activated carbon, controls MnO2And TiO2Weight ratio be（1-2）：（4- 5）.
E, it is dried, is loaded after being washed with water after the processed tapioca matrix activated carbon coolings of step d MnO2And TiO2The tapioca matrix activated carbon of composite catalyst.
3, vacuum ultraviolet combines building for ozone catalytic device
As shown in Figs. 1-2, a kind of vacuum ultraviolet combines ozone catalytic device, including be sequentially connected sealed pre-treatment pond 1, gas Body mixing chamber 2, ultraviolet photolysis device 3, ozone catalytic device 4 and air-introduced machine 5.The gas mixer chamber 2 also by oxygen hose 6 with Oxygen cylinder 7 is connected, and the oxygen hose 6 is equipped with regulating valve 8.
The pre-treatment pond 1 is equipped with air inlet pipe 9 and appendix 10, and 9 one end of the air inlet pipe is equipped with air inlet 10, the other end It is inserted into the underwater in pre-treatment pond 1,10 one end of the appendix is set to above the water surface in pre-treatment pond 1, and the other end is mixed with gas It closes room 2 to be connected, regulating valve 8 also is provided on appendix 10.The underwater of the pretreatment tank 1 is additionally provided with guide plate 11, described to lead Setting is tilted upward to plate 11 from inlet end to the other end, air inlet pipe through hole 12 is additionally provided on the guide plate 11.Air inlet pipe 9 End be set to the lower section of guide plate 11.
The ultraviolet photolysis device 3 includes sealing tubular photodissociation container 13 and the ultraviolet lamp 14 in photodissociation container 13, One layer of aluminium-foil paper 15 is also stained on the inner wall of the photodissociation container 13.The ultraviolet lamp 14 has two, is respectively arranged on photodissociation container 13 both sides and front and back stagger setting.The ultraviolet lamp is 85w.
The ozone catalytic device 4 includes the activated carbon of reaction vessel 15 and the supported catalyst in reaction vessel 15 Layer 16.The inlet end of the reaction vessel 15 is set to the bottom of reaction vessel, is additionally provided at the inlet end of 15 bottom of reaction vessel Flow-stopping plate 17, the flow-stopping plate 17 include the annular gas permeable column 171 being arranged along inlet end circumferencial direction and are pushed up set on ventilative column 171 The baffle 172 in portion, the ventilative column 171 are equipped with air hole 173.The baffle 172 extends to 171 outside of the ventilative column, And the baffle 172 set on 171 outside of ventilative column is equipped with longitudinal hole 174, the longitudinal hole 174 is in up-small and down-big loudspeaker Shape.The active carbon layer 16 is set in the iron net at the middle part of reaction vessel.The activated carbon is tapioca matrix activated carbon, activity Carbon surface load has one layer of catalyst, and the catalyst is by MnO2And TiO2By weight 3:2 compound.
The outlet side of the reaction vessel 15 is connected with air-introduced machine 5, and the air-introduced machine 5 is connected with escape pipe 19.It is described go out Tracheae is equipped with thief hatch 20 and regulating valve 8, and the escape pipe between thief hatch 20 and regulating valve 8 is also connected with return duct 21, institute It states return duct 21 with gas mixer chamber 2 to be connected, Non-return air valve 22 and regulating valve 8 also is provided on return duct 21.
4, formaldehyde treated is tested
Formaldehyde treated experiment includes the following steps：
（1）Exhaust gas enters gas mixer chamber 2 after pre-treatment pond dust removal humidification, and the oxygen that exhaust gas is exported with oxygen cylinder 7 is in gas Body mixing chamber 2 enters vacuum-ultraviolet light solution device 3 after mixing.
（2）Mixed gas issues angry phase reaction in the ultraviolet light of vacuum ultraviolet photodissociation device 3, generates a large amount of strong Oxyradical and ozone substance oxidation stain object, meanwhile, ultraviolet light carries out disinfection to mixed gas, purifies.
（3）By step（2）Processed gas device contains ozone and amounts of residual contamination, these gases enter ozone and urge 4 further reactions are set in makeup, and the active carbon layer 16 of supported catalyst, work of the ozone in catalyst are equipped in ozone catalytic device 4 Strong oxidative free radical is decomposited under and is reacted with amounts of residual contamination, and the suction-operated of activated carbon, further purification gas are coordinated Amounts of residual contamination.
The processing experiment of formaldehyde is carried out using this programme, the formaldehyde exhaust-gas for choosing three various concentrations is tested and asks flat The average removal rate of mean value, formaldehyde is 96.8%.
It should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.In addition, it should also be understood that, After reading the content taught by the present invention, those skilled in the art can various modifications may be made or change to the present invention, these Equivalent form is also fallen within the scope of the appended claims of the present application.

Claims (8)

1. a kind of method that vacuum ultraviolet joint ozone catalytic removes formaldehyde, which is characterized in that include the following steps：
（1）Exhaust gas by the dust removal of pre-treatment pond humidification after enter gas mixer chamber, the gas mixer chamber also with regulating valve Oxygen cylinder is connected, and exhaust gas enters vacuum-ultraviolet light solution device with oxygen after gas mixer chamber mixes；
（2）Mixed gas issues angry phase reaction in the ultraviolet light of vacuum ultraviolet photodissociation device, generates a large amount of Strong oxdiative Free radical and ozone substance carry out the pollutant in oxidizing gas mixture, meanwhile, ultraviolet light carries out disinfection to mixed gas, purifies；
（3）By step（2）Processed gas contains ozone and amounts of residual contamination, these gases enter ozone catalytic device into Single step reaction, the interior active carbon layer for being equipped with supported catalyst of ozone catalytic device, ozone decomposite by force under the effect of the catalyst Oxyradical is simultaneously reacted with amounts of residual contamination, coordinates the suction-operated of activated carbon, further purification gas amounts of residual contamination.
2. preparation method as described in claim 1, it is characterised in that：Step（3）In, the activated carbon is lived for tapioca base Property charcoal.
3. preparation method as claimed in claim 2, which is characterized in that the preparation method of the tapioca matrix activated carbon is such as Under：
A, tapioca is dissolved in distilled water, is put into rotating disc type microwave oven and heats 2-4 minutes after stirring evenly, obtain half Transparence colloid；
B, translucent colloid made from step A is gone in hot water reaction kettle, at 200-250 DEG C after addition 60 dispersant of soil temperature It handles 10-12 hours, is then cooled to room temperature in hot water, and hydrothermal product is washed into then drying at a temperature of 100-120 DEG C To constant weight, the spherical hydro-thermal carbon disperseed is burnt；
C, hydro-thermal carbon coke made from step B is put into the NaHSO of 2-3moL/L3In solution, stirred with the rotating speed of 2000rad/min 30-40min is then placed in isothermal reaction 4-5min in micro-wave oven；Then sample is taken out and is used hydrochloric acid and distilled water by sample Washing is dried in the drying box that temperature is 80-120 DEG C to constant weight to neutrality；Dried sample is finally put into high temperature In stove, activation process 1-2h postcoolings at a temperature of 300-400 DEG C obtain tapioca matrix activated carbon.
4. preparation method as described in claim 1, it is characterised in that：Step（3）In, the catalyst is by MnO2And TiO2It presses Weight ratio（1-2）：（4-5）It compounds.
5. preparation method as described in claim 1, it is characterised in that：The ultraviolet photolysis device includes that sealing tubular photodissociation is held Device and the ultraviolet lamp in photodissociation container are also stained with one layer of aluminium-foil paper on the inner wall of the photodissociation container.
6. preparation method as claimed in claim 5, it is characterised in that：The ultraviolet lamp is 85w.
7. preparation method as described in claim 1, it is characterised in that：The ozone catalytic device includes reaction vessel and is set to The active carbon layer of supported catalyst in reaction vessel, the inlet end of the reaction vessel are set to the bottom of reaction vessel, reaction Flow-stopping plate is additionally provided at the inlet end of container bottom, the flow-stopping plate includes the annular gas permeable column being arranged along inlet end circumferencial direction With the baffle set on ventilative column top, the ventilative column is equipped with air hole.
8. preparation method as described in claim 1, it is characterised in that：The outlet side of the reaction vessel is connected with air-introduced machine.
CN201810217121.XA 2018-03-16 2018-03-16 A kind of method that vacuum ultraviolet joint ozone catalytic removes formaldehyde Pending CN108554166A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112569928A (en) * 2020-12-17 2021-03-30 上海纳米技术及应用国家工程研究中心有限公司 Ozone-formaldehyde-benzene co-catalytic degradation catalyst and preparation method and application thereof

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Publication number Priority date Publication date Assignee Title
JP3402385B2 (en) * 1992-11-19 2003-05-06 株式会社荏原製作所 Gas cleaning method and apparatus
CN101612522A (en) * 2009-07-17 2009-12-30 许加栋 A kind of apparatus and method of utilizing ozone, ultraviolet Combined Treatment foul gas
US20100239480A1 (en) * 2009-03-17 2010-09-23 Korea Institute Of Science And Technology Method And Apparatus For The Treatment Of Nitrogen Oxides Using An Ozone And Catalyst Hybrid System
CN104857824A (en) * 2015-05-27 2015-08-26 中山大学 Waste gas processing method and device collaborating vacuum ultraviolet light catalysis and ozone catalytic oxidation
CN105869912A (en) * 2016-04-12 2016-08-17 湘潭大学 Preparation method of starch-based uniformly-dispersed activated carbon microsphere material and application thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3402385B2 (en) * 1992-11-19 2003-05-06 株式会社荏原製作所 Gas cleaning method and apparatus
US20100239480A1 (en) * 2009-03-17 2010-09-23 Korea Institute Of Science And Technology Method And Apparatus For The Treatment Of Nitrogen Oxides Using An Ozone And Catalyst Hybrid System
CN101612522A (en) * 2009-07-17 2009-12-30 许加栋 A kind of apparatus and method of utilizing ozone, ultraviolet Combined Treatment foul gas
CN104857824A (en) * 2015-05-27 2015-08-26 中山大学 Waste gas processing method and device collaborating vacuum ultraviolet light catalysis and ozone catalytic oxidation
CN105869912A (en) * 2016-04-12 2016-08-17 湘潭大学 Preparation method of starch-based uniformly-dispersed activated carbon microsphere material and application thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112569928A (en) * 2020-12-17 2021-03-30 上海纳米技术及应用国家工程研究中心有限公司 Ozone-formaldehyde-benzene co-catalytic degradation catalyst and preparation method and application thereof

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Application publication date: 20180921