CN104549210A - Photocatalytic reagent and application on aluminized paper - Google Patents
Photocatalytic reagent and application on aluminized paper Download PDFInfo
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- CN104549210A CN104549210A CN201410805323.8A CN201410805323A CN104549210A CN 104549210 A CN104549210 A CN 104549210A CN 201410805323 A CN201410805323 A CN 201410805323A CN 104549210 A CN104549210 A CN 104549210A
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- reagent
- formaldehyde
- tvoc
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Abstract
The invention provides a photocatalytic reagent which has the chemical composition of any one of TiO2, La-doped TiO2, Nb-doped TiO2 and Bi-doped TiO2. The invention also discloses equipment applying the photocatalytic reagent on aluminized paper. A waste gas outlet is formed in a photocatalytic reactor; ultraviolet lamp tubes are arranged on the inner side wall of the photocatalytic reactor on two sides of the waste gas outlet; a rotatable rod is arranged at a position, which is 3-8cm away from the ultraviolet lamp tubes; multiple hot air inlets are formed in the bottom of the photocatalytic reactor; and aluminized paper belt roller shafts are arranged on two sides of the photocatalytic reactor. The experiment proves that the degradation rate of formaldehyde and TVOC is increased along with the prolonged illumination time, the concentration of the formaldehyde is reduced along with the prolonged illumination time, the degradation rate of the formaldehyde and TVOC is not influenced by the coating thickness of the photocatalytic reagent, the photocatalytic reagent has repeatability on degradation, and the degradation rate of the photocatalytic reagent on the formaldehyde is not less than 85 percent.
Description
Technical field
The present invention relates to a kind of TiO
2and the optically catalytic TiO 2 reagent of metallic element modification, and be applied in aluminizing paper, the invention still further relates to the equipment this photocatalysis reagent being applied to aluminizing paper.
Background technology
At present, the technology of process aluminized paper formaldehyde, TVOC, mainly contains:
1, the improvement of hot air circulation.By reforming equipment air draft and air intake, a part of hot blast discharged is allowed again to recycle, efficiency utilization heat energy.The application of this technology is general, but energy resource consumption is larger, for requiring the product that higher, material is more complicated, cannot meet its requirement.
2, the adjustment of mode of heating.It is infrared ray electric heat pipe that equipment preheating zone and the first baking oven place change common heating pipe, and infrared drying heating is fast, efficiency is high, and heat is average, more importantly dry from inside to outside.According to the different boiling of VOC, the speed order of its volatilizes, arranges different temperatures, accelerates VOCs nuisance and distribute from product.The range of application of this technology is less, and the kind of process volatile materials is less.
Summary of the invention
The object of the present invention is to provide a kind of light-catalyzed reaction reagent, its chemical composition is TiO
2, La doped Ti O
2, Nb doped Ti O
2, Bi doped Ti O
2in any one, this photocatalysis reagent is nano-scale particle.
Above-mentioned light-catalyzed reaction reagent is being reduced the application on formaldehyde in aluminizing paper process and/or TVOC.
The present invention also provides the application apparatus of a kind of light-catalyzed reaction reagent on aluminizing paper, be specially: on photo catalysis reactor, be provided with waste gas outlet, the photo catalysis reactor madial wall of waste gas outlet both sides is provided with uviol lamp fluorescent tube, under uviol lamp fluorescent tube, 3-8cm place is provided with rotatable bar, be provided with multiple hot wind inlet bottom photo catalysis reactor, photo catalysis reactor both sides are provided with aluminizing paper belt roller bearing.
Described rotatable bar sprays light-catalyzed reaction reagent as claimed in claim 1; Before spraying, spray again after water-soluble for light-catalyzed reaction reagent or soluble starch or other are had gumminess fluid.
Hot-air system is provided with bottom described hot wind inlet.
Adopt above-mentioned application apparatus to obtain the method for formaldehyde and/or the qualified aluminizing paper of TVOC content, comprise the steps:
1) photo catalysis reactor is opened, and uviol lamp fluorescent tube opens 3 minutes, opens the rotatable bar being coated with photocatalysis reagent, and control hot blast temperature 120-130 DEG C, air draft rate is greater than 30%;
2) entered by the belt roller bearing of aluminizing paper by photo catalysis reactor, the formaldehyde in paper and/or TVOC material take in the air in photo catalysis reactor through hot wind inlet by hot-air system;
3) the photocatalysis reagent through UV-irradiation is contacted containing formaldehyde and/or TVOC material every sky, the formaldehyde of degrading through photocatalysis reagent and/or TVOC get rid of external by exhaust system through waste gas outlet, and air is discharged after absorption system absorbs, aluminizing paper takes photo catalysis reactor out of through belt roller bearing, can obtain formaldehyde and/or the qualified aluminizing paper of TVOC content.
Described ultraviolet wavelength is 400-315nm, and the rotating speed of belt roller bearing is 80-120m/min.
Adopt above-mentioned photocatalysis reagent and method, after the photocatalytic degradation of PARA FORMALDEHYDE PRILLS(91,95), TVOC, experiment finds: the concentration that 1. degradation rate of formaldehyde, TVOC increases 2. formaldehyde with the prolongation of light application time reduces 3. photocatalysis reagent coating thickness PARA FORMALDEHYDE PRILLS(91,95), TVOC degradation rate with the prolongation of light application time does not affect 4. photocatalysis reagent and can reach more than 85% to the degradation rate that degraded has repeatable 5. photocatalysis reagent PARA FORMALDEHYDE PRILLS(91,95).
Accompanying drawing explanation
Fig. 1 is the application apparatus of light-catalyzed reaction reagent on aluminizing paper.
Detailed description of the invention
Embodiment 1
The production method of a kind of formaldehyde and/or the qualified aluminizing paper of TVOC content, comprise the following steps, 1) pending aluminizing paper testing result: formaldehyde, standard 20.00mg/kg, actual content 35.00mg/kg, benzene exceeds standard, standard 0.002mg/ ㎡, actual content 0.006mg/ ㎡, aluminizing paper enters photo catalysis reactor, speed of service 100m/min, 2) hot blast is opened, temperature reaches 120-130 DEG C, air draft rate is greater than 30%, formaldehyde and TVOC material volatilize from aluminized paper, 3) two joint uviol lamp standard-sized sheets, the TiO of the nanometer La modification that the mist containing formaldehyde and TVOC and swingle spray
2every the sky contact (TiO of above-mentioned nanometer La modification
2mix with the mass ratio of 1:20 with soluble starch solution), under the acceleration of the ultraviolet light of wavelength 400-315nm, react, 4) paper crossed of check processing and gas, detect through Ultra Performance Liquid Chromatography instrument and gas chromatograph, make it reach the limitation of VOC " in tobacco shred and the box packaging paper ".
The aluminized paper of this method process is adopted to have following performance:
Benzene≤0.002mg/m
2
Dimethylbenzene≤0.05
Formaldehyde≤10mg/kg.
Before aluminized paper TVOC process:
After aluminized paper TOVC process:
Embodiment 2
Step is with embodiment 1, and photocatalysis reagent is the TiO2 of Bi modification, and experiment finds, the degradation rate of formaldehyde reaches 88.5%, and the degradation rate of benzene reaches 73.2%, meets the regulation of the limitation of VOC " in tobacco shred and the box packaging paper ".
Embodiment 3
Step is with embodiment 1, and photocatalysis reagent is the TiO2 of Nb modification, and experiment finds, the degradation rate of formaldehyde reaches 92.3%, and the degradation rate of benzene reaches 76.6%, meets the regulation of the limitation of VOC " in tobacco shred and the box packaging paper ".
Claims (9)
1. a light-catalyzed reaction reagent, is characterized in that, its chemical composition is TiO
2, La doped Ti O
2, Nb doped Ti O
2, Bi doped Ti O
2in any one.
2. light-catalyzed reaction reagent according to claim 1, is characterized in that, this photocatalysis reagent is nano-scale particle.
3. the light-catalyzed reaction reagent described in claim 1 or 2 is reducing the application on formaldehyde in aluminizing paper process and/or TVOC.
4. a light-catalyzed reaction reagent is applied to the equipment on aluminizing paper, it is characterized in that, photo catalysis reactor is provided with waste gas outlet, the photo catalysis reactor madial wall of waste gas outlet both sides is provided with uviol lamp fluorescent tube, under uviol lamp fluorescent tube, 3-8cm place is provided with rotatable bar, be provided with multiple hot wind inlet bottom photo catalysis reactor, photo catalysis reactor both sides are provided with aluminizing paper belt roller bearing.
5. application apparatus as claimed in claim 4, is characterized in that, rotatable bar sprays light-catalyzed reaction reagent as claimed in claim 1; Before spraying, spray again after water-soluble for light-catalyzed reaction reagent or soluble starch solution or other are had gumminess fluid.
6. application apparatus as claimed in claim 4, is characterized in that, be provided with hot-air system bottom hot wind inlet.
7. adopt application apparatus described in claim 4 or 5 to obtain the method for formaldehyde and/or the qualified aluminizing paper of TVOC content, it is characterized in that, comprise the steps:
1) photo catalysis reactor is opened, and uviol lamp fluorescent tube opens 3 minutes, opens the rotatable bar being coated with photocatalysis reagent, and control hot blast temperature 120-130 DEG C, air draft rate is greater than 30%;
2) entered by the belt roller bearing of aluminizing paper by photo catalysis reactor, the formaldehyde in paper and/or TVOC material take in the air in photo catalysis reactor through hot wind inlet by hot-air system;
3) the photocatalysis reagent through UV-irradiation is contacted containing formaldehyde and/or TVOC material every sky, the formaldehyde of degrading through photocatalysis reagent and/or TVOC get rid of external by exhaust system through waste gas outlet, and air is discharged after absorption system absorbs, aluminizing paper takes photo catalysis reactor out of through belt roller bearing, can obtain formaldehyde and/or the qualified aluminizing paper of TVOC content.
8. method as claimed in claim 7, it is characterized in that, ultraviolet wavelength is 400-315nm.
9. method as claimed in claim 7, it is characterized in that, the rotating speed of belt roller bearing is 80-120m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805323.8A CN104549210A (en) | 2014-12-22 | 2014-12-22 | Photocatalytic reagent and application on aluminized paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805323.8A CN104549210A (en) | 2014-12-22 | 2014-12-22 | Photocatalytic reagent and application on aluminized paper |
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| Publication Number | Publication Date |
|---|---|
| CN104549210A true CN104549210A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410805323.8A Pending CN104549210A (en) | 2014-12-22 | 2014-12-22 | Photocatalytic reagent and application on aluminized paper |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105833722A (en) * | 2016-06-12 | 2016-08-10 | 保护伞环保科技成都有限公司 | Indoor formaldehyde purifying device |
| CN105833721A (en) * | 2016-06-12 | 2016-08-10 | 保护伞环保科技成都有限公司 | Formaldehyde removal device |
| CN105903343A (en) * | 2016-06-12 | 2016-08-31 | 保护伞环保科技成都有限公司 | Indoor formaldehyde removal device |
| CN105944560A (en) * | 2016-06-12 | 2016-09-21 | 保护伞环保科技成都有限公司 | Formaldehyde purifying device |
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| CN2378113Y (en) * | 1999-05-11 | 2000-05-17 | 中国科学院广州能源研究所 | Photocatalysis air processing device |
| US6315963B1 (en) * | 2000-03-22 | 2001-11-13 | Samuel E. Speer | Method and apparatus for the enhanced treatment of fluids via photolytic and photocatalytic reactions |
| CN1385477A (en) * | 2002-04-28 | 2002-12-18 | 华南理工大学 | Coating material with photocatalysis decontamination and infrared energy-saving |
| CN102423717A (en) * | 2011-10-24 | 2012-04-25 | 西安建筑科技大学 | Photocatalyst for efficient degradation of organic dye, and preparation method thereof |
| CN203598662U (en) * | 2013-12-10 | 2014-05-21 | 湖北盟科纸业有限公司 | Device for reducing and treating VOCs (volatile organic compounds) in aluminized paper |
| CN104148102A (en) * | 2014-08-28 | 2014-11-19 | 金华氟特催化科技有限公司 | Compound photocatalyst used for purification of volatile organic waste gas, and preparation method thereof |
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2014
- 2014-12-22 CN CN201410805323.8A patent/CN104549210A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2378113Y (en) * | 1999-05-11 | 2000-05-17 | 中国科学院广州能源研究所 | Photocatalysis air processing device |
| US6315963B1 (en) * | 2000-03-22 | 2001-11-13 | Samuel E. Speer | Method and apparatus for the enhanced treatment of fluids via photolytic and photocatalytic reactions |
| CN1385477A (en) * | 2002-04-28 | 2002-12-18 | 华南理工大学 | Coating material with photocatalysis decontamination and infrared energy-saving |
| CN102423717A (en) * | 2011-10-24 | 2012-04-25 | 西安建筑科技大学 | Photocatalyst for efficient degradation of organic dye, and preparation method thereof |
| CN203598662U (en) * | 2013-12-10 | 2014-05-21 | 湖北盟科纸业有限公司 | Device for reducing and treating VOCs (volatile organic compounds) in aluminized paper |
| CN104148102A (en) * | 2014-08-28 | 2014-11-19 | 金华氟特催化科技有限公司 | Compound photocatalyst used for purification of volatile organic waste gas, and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105833722A (en) * | 2016-06-12 | 2016-08-10 | 保护伞环保科技成都有限公司 | Indoor formaldehyde purifying device |
| CN105833721A (en) * | 2016-06-12 | 2016-08-10 | 保护伞环保科技成都有限公司 | Formaldehyde removal device |
| CN105903343A (en) * | 2016-06-12 | 2016-08-31 | 保护伞环保科技成都有限公司 | Indoor formaldehyde removal device |
| CN105944560A (en) * | 2016-06-12 | 2016-09-21 | 保护伞环保科技成都有限公司 | Formaldehyde purifying device |
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Application publication date: 20150429 |