CN203572761U - Reaction test device for photocatalytic degradation of harmful gas by textile material - Google Patents
Reaction test device for photocatalytic degradation of harmful gas by textile material Download PDFInfo
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- CN203572761U CN203572761U CN201320527835.3U CN201320527835U CN203572761U CN 203572761 U CN203572761 U CN 203572761U CN 201320527835 U CN201320527835 U CN 201320527835U CN 203572761 U CN203572761 U CN 203572761U
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Abstract
The utility model discloses a reaction test device for photocatalytic degradation of harmful gas by a textile material. The reaction test device comprises a photocatalytic reaction system, a gas collection circulation system and a constant-temperature water circulation system, wherein the photocatalytic reaction system comprises a photocatalytic reactor tank body, an irradiation light source and a power supply wire. According to the reaction test device, the textile material with the photocatalytic activity can be tested, the harmful gas such as formaldehyde can be degraded under ultraviolet rays or visible light irradiation, and the problem of incapability of effectively evaluating the photocatalytic degradation efficiency of the textile material on the harmful gas such as formaldehyde at present can be solved.
Description
Technical field
The utility model belongs to photo chemistry technology field, relate to a kind of textile material photocatalytic degradation harmful gas reaction test device, be specifically related to a kind of device of measuring the textile material harmful gas such as formaldehyde degradation by photocatalytic oxidation process reaction under ultraviolet ray or visible ray radiation parameter.
Background technology
People spend more than 80% time in room according to statistics, and the annual whole world has 2,800,000 people to die from directly or indirectly indoor decoration pollution, and the disease in the whole world approximately 4% is all relevant with room air pollution.Research shows, formaldehyde has a more highly toxic material as a kind of, has strong carcinogenic and teratogenesis, is one of main source of indoor air pollutants.Nineteen ninety-five formaldehyde Jiu Bei international cancer research institution is defined as doubting carcinogenic substance.Indoor decorative fabric, such as carpet, wall covering fabric, extension curtain, bedding, furniture surface cover and tablecloth etc., if used in process of production the raw material and the auxiliary agent that contain formaldehyde, make final products also can slowly release formaldehyde gas, thereby people's health is worked the mischief.For this reason, people developed can formaldehyde degradation by photocatalytic oxidation process etc. the textile material of harmful gas, wherein the fiber of load nano-titanium dioxide, zinc paste and fabric just belong to this class functional material.If nano titanium oxide, Method of ZnO are used as photocatalyst, they can photochemical catalytic oxidation water body in or airborne most organic contaminant, to the toxic organic pollutant of dyestuff, surfactant, agricultural chemicals and various difficult for biological degradation, also can effectively degrade, the final product of degraded is water, carbon dioxide and the harmless small-molecule substances such as ion.At present, although China has made limit standard and the method for testing of formaldehyde in textile content, the gases such as formaldehyde, ammonia in public place air have also been formulated to corresponding bioassay standard, but the reaction unit that also there is no effectively to pass judgment on the harmful gas abilities such as textile material formaldehyde degradation by photocatalytic oxidation process, method of testing, index etc. are also unified not to the utmost.
Utility model content
The purpose of this utility model is to provide a kind of textile material photocatalytic degradation harmful gas reaction test device, can measure the textile material with photocatalytic activity, the situation of the harmful gas such as degradation of formaldehyde under ultraviolet ray or visible ray irradiation, solve at present can not effective evaluation textile material formaldehyde degradation by photocatalytic oxidation process etc. the problem of harmful gas usefulness.
The technical scheme that the utility model adopts is that textile material photocatalytic degradation harmful gas reaction test device, comprises light-catalyzed reaction system, the gas collecting circulation system and the thermostatted water circulation system; Light-catalyzed reaction system comprises, photo catalysis reactor casing, radiation source and power lead.
Feature of the present utility model is also,
Wherein, photo catalysis reactor casing consists of interior layer box body and outer layer box body, and internal layer box house is provided with radiation source, and radiation source is connected with voltage stabilizer by power lead, the front of photo catalysis reactor casing is provided with hermatic door, and hermatic door is provided with sealing strip around; The top of photo catalysis reactor casing has air intake opening and gas outlet, and air intake opening and gas outlet are positioned at cornerwise two ends of photo catalysis reactor box top, is provided with the extension tube being connected with gas outlet in interior layer box body; Position near photo catalysis reactor bottom half on a side of the outer layer box body of photo catalysis reactor casing is provided with water inlet, and the position near photo catalysis reactor casing top on another side is provided with water delivering orifice.
The gas collecting circulation system comprises spinner-type flowmeter, minipump and bubble absorption tube, spinner-type flowmeter is connected by outlet pipe with bubble absorption tube successively with minipump, outlet pipe passes into the air intake opening on photo catalysis reactor casing, and spinner-type flowmeter is connected with gas outlet by admission line; Outlet pipe is provided with the second valve near the position of air intake opening; One end of minipump is connected with gas inject case, and the other end of gas inject case connects on admission line.
The thermostatted water circulation system consists of low temperature thermostat bath, rising pipe and water inlet pipe, and the rising pipe of low temperature thermostat bath is connected with water inlet, and the water inlet pipe of low temperature thermostat bath is connected with water delivering orifice, is provided with the first valve above rising pipe.
The beneficial effects of the utility model are, the utility model is based on the involved problem of gas-phase photocatalysis device, as reaction kinetics, quality is transmitted and is mixed, the type of flow, reactant contacts with textile material, temperature is controlled, and light irradiation etc., designed the position of light source, the fixed form of photocatalysis textile material, pending pollutant enters the mode of photocatalysis apparatus, take into account simplified apparatus structure, easy to operate and raise the efficiency, therefore can be accurate, fast, detect efficiently textile material under ultraviolet ray or visible ray irradiation, the effect of the harmful gas such as formaldehyde degradation by photocatalytic oxidation process or ammonia and ability.
Accompanying drawing explanation
Fig. 1 is the structural representation of textile material photocatalytic degradation harmful gas reaction test device.
In figure, 1. radiation source, 2. hermatic door, 3. air intake opening, 4. gas outlet, 5. water inlet, 6. water delivering orifice, 7. the first valve, 8. low temperature thermostat bath, 9. spinner-type flowmeter, 10. minipump, 11. bubble absorption tubes, 12. voltage stabilizers, 13. gas inject casees, 14. interior layer box bodies, 15. outer layer box bodies, 16. photo catalysis reactor casings, 17. second valves, 18. rising pipes, 19. water inlet pipes, 20. power leads, 21. outlet pipes, 22. admission lines, 23. extension tubes.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
The utility model textile material photocatalytic degradation harmful gas reaction test device, as shown in Figure 1, comprises light-catalyzed reaction system, the gas collecting circulation system and the thermostatted water circulation system; Light-catalyzed reaction system comprises, photo catalysis reactor casing 16, radiation source 1 and power lead 20.
Wherein, photo catalysis reactor casing 16 consists of interior layer box body 14 and outer layer box body 15, interior layer box body 14 inside are provided with radiation source 1, radiation source 1 is connected with voltage stabilizer 12 by power lead 20, the front of photo catalysis reactor casing 16 is provided with hermatic door 2, and hermatic door 2 is provided with sealing strip around;
The top of photo catalysis reactor casing 16 has air intake opening 3 and gas outlet 4, and air intake opening 3 and gas outlet 4 are positioned at cornerwise two ends of photo catalysis reactor casing 16 end faces, is provided with the extension tube 23 being connected with gas outlet 4 in interior layer box body 15;
Position near photo catalysis reactor casing 16 bottoms on a side of the outer layer box body 15 of photo catalysis reactor casing 16 is provided with water inlet 5, and the position near photo catalysis reactor casing 16 tops on another side is provided with water delivering orifice 6.
Wherein, the gas collecting circulation system comprises spinner-type flowmeter 9, minipump 10 and bubble absorption tube 11, spinner-type flowmeter 9 is connected by outlet pipe 21 with bubble absorption tube 11 successively with minipump 10, outlet pipe 21 passes into the air intake opening 3 on photo catalysis reactor casing 16, and spinner-type flowmeter 9 is connected with gas outlet 4 by admission line 22; Outlet pipe 21 is provided with the second valve 17 near the position of air intake opening 4;
One end of minipump 10 is connected with gas inject case 13, and the other end of gas inject case 13 connects on admission line 22.
Wherein, the thermostatted water circulation system consists of low temperature thermostat bath 8, rising pipe 18 and water inlet pipe 19, and the rising pipe 18 of low temperature thermostat bath 8 is connected with water inlet 5, and the water inlet pipe 19 of low temperature thermostat bath 8 is connected with water delivering orifice 6, and rising pipe 18 is provided with the first valve 7 above.
The utility model textile material photocatalytic degradation harmful gas reaction test device, photo catalysis reactor casing 16 consists of inside and outside two-layer stainless steel square, wherein, interior layer box body 14 length of sides are 50cm, its outside surface is welded with stainless steel reinforcement, is used for protecting interior layer box body under Water Pressure, not produce compression deformation; The length of side of outer layer box body 15 is 60cm, distance between six faces of interior layer box body and outer layer box body is 5cm, the front center position of photo catalysis reactor casing 16 has a hermatic door 2 that is of a size of 30cm * 30cm, the surrounding of hermatic door 2 with corrosion resistant plate by inside and outside two-layer welding box body together, make to form between interior layer box body 14 and outer layer box body 15 cavity of a sealing, guarantee that outer stainless steel casing is being subject to Water Pressure not produce dilatational strain.
Edge at hermatic door 2 posts sealing strip, and after guaranteeing that hermatic door is closed, the test gas of box house can not leak, opening hermatic door can change box house light source, regulate light source height, place textile material to be tested, the work such as detect and clean.
In photo catalysis reactor casing 16, be provided with radiation source 1, radiation source 1 can be selected the light source of ultraviolet (UV) A, UVB, UVC and 4 kinds of different-wavebands of visible ray, wherein to select predominant wavelength be 254nm UV-lamp to UVA wave band, it is 297nm UV-lamp that UVB wave band is selected predominant wavelength, it is 365nm UV-lamp that UVC wave band is selected predominant wavelength, and visible light wave range is selected the metal halide lamp of solar simulated.According to the difference of light radiation environment, can select ultraviolet ray and the visible lamp of different capacity size.
The end face center of photo catalysis reactor casing 16 has the aperture that a diameter is 1cm, power lead 20 is introduced into interior layer box body by this aperture, the radiation source of box house setting 1 and the voltage stabilizer 12 of casing outside are linked together, and between this aperture and power lead, adopt sealing cap to seal, to guarantee that the gas of box house can not leak.Wherein, the effect of light source stabilizer 12 is to guarantee UV-lamp or visible lamp voltage stabilization, extends light source serviceable life.
On photo catalysis reactor casing 16 end faces, be provided with an air intake opening and a gas outlet, to being provided with air intake opening 3 and gas outlet 4 along the cornerwise direction of square near casing edge, air intake opening 3 and gas outlet 4 are positioned at cornerwise two ends of photo catalysis reactor casing 16 end faces.In interior layer box body 15, be provided with the extension tube 23 being connected with gas outlet 4, it passes to bottom half, and the gas in casing can fully be circulated.
On a side of photo catalysis reactor casing 16, be provided with a water inlet 5; On another side, be provided with a water delivering orifice 6, wherein water inlet 5 is positioned at side near the centre position of bottom half, and water delivering orifice 6 is positioned at another side near the centre position at casing top, like this, thermostatted water in low temperature thermostat bath 8 is delivered to water inlet 5 by rising pipe 18, then flow in the cavity between interior layer box body 14 and outer layer box body 15, after being full of cavity, by water delivering orifice 6, flow out again, by water inlet pipe 19, flow back to low temperature thermostat bath 8, thereby guarantee that stainless steel casing is in temperature constant state.Wherein, what low temperature thermostat bath 8 was used is DFY-30/20 type low temperature thermostat bath, is commercially available instrument, and its useful volume is 30L, and actuating medium is used deionized water, and ebullator flow velocity is 20L/min, and working temperature can select to be arranged on 5～80 ℃.
Spinner-type flowmeter 9 in the gas collecting circulation system is selected LZB-(4) BW type spinner-type flowmeter, and adjusting knob can be controlled gas flow size, its gas sampling flow range 0～1L/min.According to the airborne method for determining formaldehyde > of tank-volumes and GB/T18204.26-2000 < < public place >, minipump 10 is selected D831A-23-01 type vacuum pump, this vacuum pump volume is small and exquisite, noise is low, power consumption is little, easy operating, can dusty gas.The effect of bubble absorption tube 11 is, after light-catalyzed reaction completes, minipump is extracted the gas in casing out, and the absorption liquid being incorporated in drum absorption tube carries out dissolution filter.The effect of gas inject case 13 is that the harmful gases such as the formaldehyde to be detected of certain molal weight or ammonia are added to and inject case, then opening minipump flows gas circulation, guarantee that in casing, formaldehyde gas is evenly distributed, also can carry out external heat to injecting case, to accelerate the volatilization of formaldehyde gas.
The utility model textile material photocatalytic degradation harmful gas reaction test device, its test philosophy is, textile material to be detected is placed in the stainless steel closed container of certain volume, in container, be filled with the harmful gases such as certain density formaldehyde or ammonia, select ultraviolet ray or the visible light source of different capacity to carry out irradiation to textile material, wherein, radiation source can regulate apart from textile material distance, through after the irradiation of different time, use minipump that the gas after degraded is extracted out in order to detecting.Therefore, the utility model can detect the performance of the harmful gases such as textile material formaldehyde degradation by photocatalytic oxidation process exactly, for design, production and the detection of indoor decorative fabric provides foundation.
Research shows, textile sheet material bread is covered with nano-TiO
2during photocatalyst, when being subject to wavelength and being less than the ultraviolet ray of 380nm, irradiate, can be at the photic electronics e of Surface Creation
-with hole h
+.Electronics and hole can move to fiber surface, and the dissolved oxygen DO surperficial with it and water are had an effect respectively, generate and have highly active free radical OH and O
2.
-, the two deep oxidation that is formaldehyde provides highly active catalyzer, oxidation of formaldehyde can be decomposed into carbon dioxide and water.The Photocatalytic Oxidation of formaldehyde is to be finally oxidized to CO through intermediate product formic acid HCOOH
2.In air, the existence of oxygen and water is that photochemical catalytic oxidation formaldehyde is CO
2with water conditio sune qua non, light-catalyzed reaction efficiency is had to considerable influence.
The process of utilizing the utility model textile material photocatalytic degradation harmful gas reaction test device to test is,
Step 1, opening under the condition of radiation source, in light-catalyzed reaction casing, do not place sample to be tested, a certain amount of formaldehyde or other harmful gases are injected in stainless steel reactor, wait to reach abundant circulation and measure the concentration C of airborne formaldehyde or other harmful gases later
1.
Step 2, after the air in purge reactor, places textile material to be detected, and formaldehyde or other harmful gases of injection and step 1 same amount, then open radiation source 1, measures the concentration C of airborne formaldehyde or other harmful gases after irradiation certain hour
2,
Step 3, calculates formaldehyde or other harmful gas degradation rates according to formula (1).
According to above-mentioned method of testing, test, in each step some concrete operation methods be:
In step 2, when placing textile material to be detected, should be placed on radiation source 1 surrounding in casing, and regulate as required the distance between textile material and light source, then according to material and the requirement tested, the UVA of choice for use different capacity, different-waveband, UVB, UVC UV-lamp or visible lamp, then close hermatic door, waits to switch on power to carry out light irradiation.
When starting irradiation, open the thermostatted water circulation system casing is carried out to constant temperature processing, the temperature of box house keeps stable when guaranteeing irradiation.Wherein, the thermostatted water circulation system is comprised of low temperature thermostat bath and water pipe, calibration cell useful volume is 30L, actuating medium is used deionized water, ebullator flow velocity is 20L/min, working temperature can be arranged on 5～80 ℃, and thermostatted water causes the water inlet on photo catalysis reactor casing outward by the ebullator of low temperature thermostat bath inside, then the water delivering orifice pipeline on photo catalysis reactor casing flow back in calibration cell.
Measure the concentration C of airborne formaldehyde or other harmful gases
2concrete grammar be, wait question response after a period of time, open near the second valve 17 gas outlet 4, start minipump gas gathered.Now, the gas coming from the collection of stainless steel photo catalysis reactor, first with certain flow velocity, pass through spinner-type flowmeter 9, then by minipump 10, the bubble absorption tube 11 of finally flowing through, airborne like this formaldehyde or other harmful gases just can be dissolved in absorption liquid, and the cleaned air after filtration flow back in reactor.In whole gas recycle process, minipump plays a part driving gas circulation, through after a while, by the gas filtration in whole reactor one time.
Concentration of formaldehyde in absorption liquid is measured according to standard GB/T/T18204.26-2000 < < public place airborne method for determining formaldehyde > >, in absorption liquid, ammonia concentration is measured according to national standard GB/T 18204.25-2000 < < public place Ammonia in Air assay method > >, records the concentration C of airborne formaldehyde after irradiation certain hour or other harmful gases
2, then according to formula (1), calculate the degradation rate of gas.
Claims (3)
1. textile material photocatalytic degradation harmful gas reaction test device, is characterized in that, comprises light-catalyzed reaction system, the gas collecting circulation system and the thermostatted water circulation system; Described light-catalyzed reaction system comprises, photo catalysis reactor casing (16), radiation source (1) and power lead (20);
Described photo catalysis reactor casing (16) consists of interior layer box body (14) and outer layer box body (15), interior layer box body (14) inside is provided with radiation source (1), radiation source (1) is connected with voltage stabilizer (12) by power lead (20), the front of photo catalysis reactor casing (16) is provided with hermatic door (2), and described hermatic door (2) is provided with sealing strip around;
The top of described photo catalysis reactor casing (16) has air intake opening (3) and gas outlet (4), described air intake opening (3) and gas outlet (4) are positioned at cornerwise two ends of photo catalysis reactor casing (16) end face, are provided with the extension tube (23) being connected with gas outlet (4) in described interior layer box body (15);
Position near photo catalysis reactor casing (16) bottom on a side of the outer layer box body (15) of described photo catalysis reactor casing (16) is provided with water inlet (5), and the position near photo catalysis reactor casing (16) top on another side is provided with water delivering orifice (6).
2. textile material photocatalytic degradation harmful gas reaction test device according to claim 1, it is characterized in that, the described gas collecting circulation system comprises spinner-type flowmeter (9), minipump (10) and bubble absorption tube (11), described spinner-type flowmeter (9) is connected by outlet pipe (21) with bubble absorption tube (11) successively with minipump (10), described outlet pipe (21) passes into the air intake opening (3) on photo catalysis reactor casing (16), described spinner-type flowmeter (9) is connected with gas outlet (4) by admission line (22), described outlet pipe (21) is provided with the second valve (17) near the position of gas outlet (4),
One end of described minipump (10) is connected with gas inject case (13), and the other end of described gas inject case (13) connects on admission line (22).
3. textile material photocatalytic degradation harmful gas reaction test device according to claim 1 and 2, it is characterized in that, the described thermostatted water circulation system consists of low temperature thermostat bath (8), rising pipe (18) and water inlet pipe (19), the rising pipe (18) of described low temperature thermostat bath (8) is connected with water inlet (5), the water inlet pipe (19) of low temperature thermostat bath (8) is connected with water delivering orifice (6), and described rising pipe (18) is provided with the first valve (7) above.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486817A (en) * | 2015-12-30 | 2016-04-13 | 中国建材检验认证集团股份有限公司 | Detection method of non-adsorptive purifying property of materials to air pollutants |
| CN105498525A (en) * | 2015-11-27 | 2016-04-20 | 大连理工大学 | Catalysis system capable of removing harmful component formaldehyde in air |
| CN105833721A (en) * | 2016-06-12 | 2016-08-10 | 保护伞环保科技成都有限公司 | Formaldehyde removal device |
| 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 |
| CN105929048A (en) * | 2016-04-19 | 2016-09-07 | 山东亿康环保科技有限公司 | Testing method for performance of photocatalytic air-purifying material |
| CN105944560A (en) * | 2016-06-12 | 2016-09-21 | 保护伞环保科技成都有限公司 | Formaldehyde purifying device |
| CN107462572A (en) * | 2016-07-12 | 2017-12-12 | 伦慧东 | A kind of photocatalyst air dissipation function comparison system |
| CN107833515A (en) * | 2017-12-04 | 2018-03-23 | 上海申得欧有限公司 | A kind of device for being used to detect catalysis material degraded pernicious gas effect |
| CN109030725A (en) * | 2018-06-20 | 2018-12-18 | 佛山市川东磁电股份有限公司 | A kind of connection structure of nitrogen dioxide sensor |
| CN109596785A (en) * | 2018-12-27 | 2019-04-09 | 陕西师范大学 | A kind of experimental provision of monitoring material release gas |
| FR3089633A1 (en) | 2018-12-07 | 2020-06-12 | Psa Automobiles Sa | AUTOMATED TEXTILE ALTERATION EVALUATION METHOD |
| CN112903898A (en) * | 2021-01-28 | 2021-06-04 | 徐州工程学院 | Device and method for testing photocatalytic performance |
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2013
- 2013-08-27 CN CN201320527835.3U patent/CN203572761U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498525A (en) * | 2015-11-27 | 2016-04-20 | 大连理工大学 | Catalysis system capable of removing harmful component formaldehyde in air |
| CN105486817A (en) * | 2015-12-30 | 2016-04-13 | 中国建材检验认证集团股份有限公司 | Detection method of non-adsorptive purifying property of materials to air pollutants |
| CN105929048A (en) * | 2016-04-19 | 2016-09-07 | 山东亿康环保科技有限公司 | Testing method for performance of photocatalytic air-purifying material |
| CN105833721A (en) * | 2016-06-12 | 2016-08-10 | 保护伞环保科技成都有限公司 | Formaldehyde removal device |
| 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 |
| CN105944560A (en) * | 2016-06-12 | 2016-09-21 | 保护伞环保科技成都有限公司 | Formaldehyde purifying device |
| CN107462572A (en) * | 2016-07-12 | 2017-12-12 | 伦慧东 | A kind of photocatalyst air dissipation function comparison system |
| CN107833515A (en) * | 2017-12-04 | 2018-03-23 | 上海申得欧有限公司 | A kind of device for being used to detect catalysis material degraded pernicious gas effect |
| CN109030725A (en) * | 2018-06-20 | 2018-12-18 | 佛山市川东磁电股份有限公司 | A kind of connection structure of nitrogen dioxide sensor |
| FR3089633A1 (en) | 2018-12-07 | 2020-06-12 | Psa Automobiles Sa | AUTOMATED TEXTILE ALTERATION EVALUATION METHOD |
| CN109596785A (en) * | 2018-12-27 | 2019-04-09 | 陕西师范大学 | A kind of experimental provision of monitoring material release gas |
| CN112903898A (en) * | 2021-01-28 | 2021-06-04 | 徐州工程学院 | Device and method for testing photocatalytic performance |
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