CN110813086A - VOCs efficient treatment method - Google Patents
VOCs efficient treatment method Download PDFInfo
- Publication number
- CN110813086A CN110813086A CN201911188631.XA CN201911188631A CN110813086A CN 110813086 A CN110813086 A CN 110813086A CN 201911188631 A CN201911188631 A CN 201911188631A CN 110813086 A CN110813086 A CN 110813086A
- Authority
- CN
- China
- Prior art keywords
- vocs
- adsorption
- efficiency
- catalytic
- triethoxysilane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 151
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 64
- 230000003197 catalytic effect Effects 0.000 claims abstract description 43
- 238000001179 sorption measurement Methods 0.000 claims abstract description 39
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 10
- 150000001343 alkyl silanes Chemical class 0.000 claims abstract description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 238000010521 absorption reaction Methods 0.000 claims description 14
- 238000010992 reflux Methods 0.000 claims description 12
- 238000001291 vacuum drying Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 239000003463 adsorbent Substances 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- OYGYKEULCAINCL-UHFFFAOYSA-N triethoxy(hexadecyl)silane Chemical compound CCCCCCCCCCCCCCCC[Si](OCC)(OCC)OCC OYGYKEULCAINCL-UHFFFAOYSA-N 0.000 claims description 6
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical group CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 claims description 5
- 229960003493 octyltriethoxysilane Drugs 0.000 claims description 5
- YGUFXEJWPRRAEK-UHFFFAOYSA-N dodecyl(triethoxy)silane Chemical compound CCCCCCCCCCCC[Si](OCC)(OCC)OCC YGUFXEJWPRRAEK-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 7
- 238000006555 catalytic reaction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000011272 standard treatment Methods 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 238000011068 loading method Methods 0.000 abstract description 2
- 230000008929 regeneration Effects 0.000 abstract description 2
- 238000011069 regeneration method Methods 0.000 abstract description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 239000010453 quartz Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000001132 ultrasonic dispersion Methods 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000009210 therapy by ultrasound Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004434 industrial solvent Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- 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
- B01D53/04—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 with stationary adsorbents
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Toxicology (AREA)
- Biomedical Technology (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a VOCs high-efficiency treatment material, wherein a quartz sand core plate is modified by a long-chain alkyl silane coupling agent to obtain a VOCs adsorption material, and then modified nano TiO is used2Loading the catalyst on VOCs adsorbing materials to obtain the VOCs high-efficiency catalytic material. The method of the invention fully combines the advantages of the adsorption method and the catalysis method, and can realize the standard treatment by flexibly adjusting the parallel connection or the series connection of the materials according to the content of VOCs in the gas. The method has strong flexibility and high adsorption efficiency, and can effectively adsorb or catalytically oxidize the VOCs. The quartz sand core plate used in the invention has the advantages of corrosion resistance, temperature resistance, high strength, easy regeneration, obvious reduction of material cost, simple preparation method, reduction of the cost for treating VOCs (volatile organic compounds)The treatment effect is obvious.
Description
Technical Field
The invention relates to the technical field of atmospheric environment protection, in particular to a high-efficiency treatment method for VOCs.
Background
VOCs are an important atmospheric pollutant and have great destructive effect on the environment. Mainly comes from fine chemical engineering, petrochemical industry, pharmacy, electronic component manufacturing, printing, shoe manufacturing, automobile exhaust and the like. The main sources of the method can be divided into a fixed source and a movable source, wherein the fixed source comprises production processes such as petrochemical industry, industrial solvent production, pharmacy, pesticide production, paint and coating production, printing, metal enameled wire production, leather making and the like; the mobile source includes exhaust gas emitted from vehicles such as automobiles. The great harm of VOCs to the environment and the serious threat to human health cause high attention of governments of all countries in the world.
At present, the mainstream treatment technology of the VOCs comprises an adsorption method, a catalytic oxidation method and the like. The adsorption method mainly uses active carbon, zeolite and the like, and physically adsorbs VOCs by utilizing the porous structure of the adsorption material, so that the acting force is weak and the adsorption is easy to desorb; the catalytic oxidation method mainly utilizes nano titanium dioxide on the surface of a matrix to generate photocatalytic oxidation under the irradiation of ultraviolet light, but the preparation technology or the combination technology of the nano titanium dioxide and the matrix are not related, so that the nano particles cannot keep an active state, and the catalytic efficiency is lower.
Disclosure of Invention
Aiming at the defects of the prior art, the invention fully combines the advantages of an adsorption method and a catalysis method on the basis of solving the problems to form a composite technology for efficiently treating VOCs, and can realize standard treatment by flexibly adjusting materials in parallel or in series according to the content of the VOCs in gas.
The invention is realized by the following technical scheme:
in a first aspect of the invention, a VOCs adsorbent material is provided, which is prepared by the following method: immersing the quartz sand core plate in toluene, dropwise adding a long-chain alkyl silane coupling agent with the mass concentration of 1-10%, heating in a water bath, stirring, carrying out reflux reaction, taking out the quartz sand core plate after the reaction is finished, washing with deionized water and absolute ethyl alcohol respectively, and carrying out vacuum drying to obtain the VOCs adsorbing material.
Preferably, the long-chain alkyl silane coupling agent is octyl triethoxysilane, dodecyl triethoxysilane or hexadecyl triethoxysilane.
Preferably, the temperature of the water bath heating is 40-90 ℃.
Preferably, the time of the reflux reaction is 3-5 h.
The second aspect of the invention provides a high-efficiency VOCs catalytic material, wherein the adsorbing material is prepared by the following method: vacuum-dried nano TiO with the particle size of 5-10 nm2Adding the particles into toluene to obtain nano TiO2Adding 1-10% of a long-chain alkyl silane coupling agent with the mass concentration, performing ultrasonic dispersion for 30min, dropwise adding the long-chain alkyl silane coupling agent with the mass concentration of 1-10%, heating in a water bath, stirring, performing reflux reaction, adding a VOCs adsorbing material after the reaction is finished, performing ultrasonic dispersion for 1-3 h, taking out the VOCs adsorbing material, washing with deionized water and absolute ethyl alcohol respectively, and performing vacuum drying to obtain the VOCs efficient catalytic material.
Preferably, the temperature of the water bath heating is 40-90 ℃; the time of the reflux reaction is 3-5 h.
Preferably, the long-chain alkyl silane coupling agent is octyl triethoxysilane, dodecyl triethoxysilane or hexadecyl triethoxysilane.
A third aspect of the present invention provides a VOCs absorption apparatus, wherein the apparatus is any one of the following 1) to 3):
1) the adsorption device comprises at least one VOCs adsorption unit;
2) the adsorption device comprises at least one VOCs catalytic unit;
3) the adsorption device comprises at least one VOCs adsorption unit and at least one VOCs catalytic unit;
the VOCs adsorption unit comprises a VOCs adsorption material;
the VOCs catalytic unit comprises a VOCs high-efficiency catalytic material and ultraviolet light sources arranged at two ends of the VOCs high-efficiency catalytic material.
In a fourth aspect, the invention provides the use of a VOCs adsorbent material or a high efficiency catalytic material for VOCs or a VOCs adsorbent device for the treatment of VOCs.
The fifth aspect of the present invention provides a method for efficiently processing VOCs, comprising the following steps: and introducing gas to be treated from one end of the VOCs absorption device, and discharging the gas from the other end to finish the treatment of the VOCs.
The invention has the beneficial effects that:
1. the method of the invention fully combines the advantages of the adsorption method and the catalysis method, and can realize the standard treatment by flexibly adjusting the parallel connection or the series connection of the materials according to the content of VOCs in the gas. The method has strong flexibility and high adsorption efficiency, and can effectively adsorb or catalytically oxidize the VOCs.
2. The quartz sand core plate used in the invention has the advantages of corrosion resistance, temperature resistance, high strength and easy regeneration, and obviously reduces the material cost and the cost for treating VOCs.
3. The quartz sand core plate obtained by modification treatment has a large water contact angle, good hydrophobicity and good adsorption effect of VOCs.
4. The VOCs adsorbing material and the VOCs high-efficiency catalytic material prepared by the method have wide treatment on VOCs and are not limited to a certain substance.
5. According to the invention, the quartz sand core plate is used as a base material and is formed by cutting and grinding quartz glass, the quartz sand core plate has good light transmission performance in the whole spectrum band from ultraviolet to infrared, the visible light transmission rate is more than 93%, and particularly in the ultraviolet spectrum region, the maximum transmission rate can reach more than 80%. The quartz sand core plate subjected to hydrophobic modification treatment is a very good substrate supporting material.
Drawings
FIG. 1 is a photograph showing typical water contact angles, wherein a is an unmodified quartz sand core plate (water contact angle of 69.1 ℃), b is a VOCs adsorbing material (water contact angle of 92.4 ℃), and c is a VOCs high-efficiency catalytic material (water contact angle of 109.5 ℃);
FIG. 2 is a schematic diagram of a series arrangement of two groups of VOCs adsorption units;
FIG. 3 is a schematic diagram of a series arrangement of two groups of VOCs.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In order to improve the treatment efficiency of the VOCs, the invention fully combines the advantages of an adsorption method and a catalysis method to form a composite technology for efficiently treating the VOCs. The invention can flexibly adjust the parallel connection or the serial connection of the prepared VOCs adsorption material and the VOCs high-efficiency catalytic material according to the content of VOCs in the gas, thereby realizing high-efficiency treatment.
A first embodiment of the VOCs absorption apparatus of the present invention is: consists of a VOCs adsorption unit;
a second embodiment of the VOCs absorption apparatus of the present invention is: a plurality of VOCs adsorption units are connected in series;
a third embodiment of the VOCs absorption apparatus of the present invention is: a plurality of VOCs adsorption units are connected in parallel;
a fourth embodiment of the VOCs absorption apparatus of the present invention is: a plurality of VOCs adsorption units are connected in series and in parallel;
a fifth embodiment of the VOCs absorption apparatus of the present invention is: the device consists of a VOCs high-efficiency catalytic unit;
a sixth embodiment of the VOCs absorption apparatus of the present invention is: a plurality of VOCs high-efficiency catalytic units are connected in series to form the catalyst;
a seventh embodiment of the VOCs absorption apparatus of the present invention is: a plurality of VOCs high-efficiency catalytic units are connected in parallel;
an eighth embodiment of the VOCs absorption apparatus of the present invention is: a plurality of VOCs high-efficiency catalytic units are connected in series and in parallel;
a ninth embodiment of the VOCs absorption apparatus of the present invention is: at least one VOCs adsorption unit and at least one VOCs high-efficiency catalytic unit are connected in series;
a tenth embodiment of the VOCs absorption apparatus of the present invention is: at least one VOCs adsorption unit and at least one VOCs high-efficiency catalytic unit are connected in parallel;
an eleventh embodiment of the VOCs absorption apparatus of the present invention is: a plurality of VOCs adsorption units and a plurality of VOCs high-efficiency catalytic units are connected in series and in parallel.
In the above embodiment, each of the VOCs adsorption units and the VOCs high-efficiency catalytic units is installed in the casing, the casing is determined according to the shapes of the VOCs adsorption units and the VOCs high-efficiency catalytic units, and may be in various shapes such as a cylinder, a cuboid, a triangular prism, or a polygonal body, and the casing may be made of plastic, metal, or other materials; the shells are connected through a connecting piece, and the connecting piece can be a rubber sealing piece or a sealing piece made of other materials.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments. If the experimental conditions not specified in the examples are specified, the conditions are generally conventional or recommended by the reagent company; reagents, consumables, and the like used in the following examples are commercially available unless otherwise specified.
Example 1: preparation of VOCs adsorbing material
Immersing the dried quartz sand core plate in toluene, dropwise adding 2% octyl triethoxysilane into the toluene, carrying out reflux reaction for 3 hours in a water bath at 50 ℃ under stirring conditions, taking out the sand core plate after the reaction is finished, washing the sand core plate with deionized water and absolute ethyl alcohol for several times respectively, and carrying out vacuum drying to obtain the VOCs adsorbing material. The contact angle of pure water was measured to be 92.4 ° (see fig. 1 b).
Example 2: preparation of VOCs high-efficiency catalytic material
(1) Immersing the dried quartz sand core plate in toluene, dropwise adding hexadecyl triethoxy silane with the mass concentration of 3.5%, carrying out reflux reaction for 5 hours in a water bath at 90 ℃ under the stirring condition, taking out the sand core plate after the reaction is finished, respectively washing the sand core plate for several times by using deionized water and absolute ethyl alcohol, and carrying out vacuum drying to obtain the VOCs adsorbing material.
(2) Vacuum drying to obtain nanometer TiO with particle diameter of 8nm2Placing the particles in a three-neck flask, pouring toluene and nano TiO2Adding 1% by mass, and ultrasonically dispersing for 30 min; dropwise adding 1% hexadecyl triethoxy silane, carrying out reflux reaction for 3h in 70 ℃ water bath under stirring condition, and after the reaction is finished, carrying outAnd (2) adding the VOCs high-efficiency adsorbing material prepared in the step (1), performing ultrasonic treatment for 1h, taking out the quartz core plate, washing with deionized water and absolute ethyl alcohol for several times respectively, and performing vacuum drying to obtain the VOCs high-efficiency catalytic material. The contact angle of pure water was measured to be 109.5 ° (see fig. 1 c).
Example 3: preparation VOCs absorbing device
The VOCs adsorbing material prepared in example 1 was placed in a cylindrical PP tube as a VOCs adsorbing unit, and two such VOCs adsorbing units were connected together with a rubber seal ring, to obtain a VOCs adsorbing device.
Example 4: preparation VOCs absorbing device
The ultraviolet light source, the VOCs adsorbing material prepared in the embodiment 2 and the ultraviolet light source are sequentially arranged in the cylindrical PP pipe to be used as a VOCs adsorbing unit, and two VOCs adsorbing units are connected together by the rubber sealing ring, so that the VOCs adsorbing device is obtained.
Example 5: preparation VOCs absorbing device
The VOCs treatment device is characterized in that a VOCs adsorption unit prepared in the embodiment 3 is used as a first VOCs adsorption unit, a VOCs high-efficiency catalytic unit prepared in the embodiment 4 is used as a second VOCs treatment unit, and the two units are respectively arranged in a circular PP pipe to be connected through a rubber sealing ring, so that the VOCs treatment device is the VOCs treatment device.
Comparative example 1
And respectively loading the two untreated quartz chips into a circular PP tube, and connecting the two untreated quartz chips by using rubber sealing rings to obtain the VOCs treatment device.
Comparative example 2
Vacuum drying to obtain nanometer TiO with particle diameter of 8nm2Adding the particles into toluene to obtain nano TiO2Adding the raw materials with the mass concentration of 1%, adding an untreated quartz chip, performing ultrasonic dispersion for 1h, and drying to obtain the VOCs catalytic material. Taking two VOCs catalytic materials; and arranging ultraviolet light sources on two sides of each VOCs catalytic material, respectively filling the ultraviolet light sources into the circular PP pipes, and connecting the ultraviolet light sources by using rubber sealing rings to obtain the VOCs treatment device.
Comparative example 3
Vacuum drying to obtain nanometer TiO with particle diameter of 8nm2Particles are arranged in threeIn a flask, toluene and nano TiO are poured2Adding 1% by mass, and ultrasonically dispersing for 30 min; dropwise adding vinyl triethoxysilane with the mass concentration of 1%, carrying out reflux reaction for 3h under the conditions of 70 ℃ water bath and stirring, after the reaction is finished, adding an untreated quartz chip, carrying out ultrasonic treatment for 1h, taking out a quartz plate, washing with deionized water and absolute ethyl alcohol for several times respectively, and carrying out vacuum drying to obtain the VOCs catalytic material; and arranging ultraviolet light sources on two sides of each VOCs catalytic material, respectively filling the ultraviolet light sources into circular PP pipes, and connecting the ultraviolet light sources by using rubber sealing rings to obtain the VOCs treatment device.
Test example 1
VOCs treatment apparatus prepared in examples 3 to 5 and comparative examples 1 to 3 were supplied with a VOCs content of 347mg/m at one end3The content of trichloroethane discharged from the other end was measured, and the results are shown in Table 1.
TABLE 1 trichloroethane content
Test example 2
One end of the VOCs treatment apparatus prepared in examples 3 to 5 and comparative examples 1 to 3 was fed with a VOCs content of 843mg/m3The content of benzene discharged from the other end was measured, and the results are shown in Table 2.
TABLE 2 benzene content
As can be seen from tables 1 and 2, the VOCs adsorbing material and the VOCs high-efficiency catalytic material prepared by the method have good treatment effects on trichloroethane and benzene.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A VOCs adsorbing material is characterized by being prepared by the following method:
immersing the quartz sand core plate in toluene, dropwise adding a long-chain alkyl silane coupling agent with the mass concentration of 1-10%, heating in a water bath, stirring, carrying out reflux reaction, taking out the quartz sand core plate after the reaction is finished, washing with deionized water and absolute ethyl alcohol respectively, and carrying out vacuum drying to obtain the VOCs adsorbing material.
2. A VOCs adsorbent material as claimed in claim 1, wherein the long chain alkyl silane coupling agent is octyl triethoxysilane, dodecyl triethoxysilane or hexadecyl triethoxysilane.
3. The VOCs adsorbing material of claim 1, wherein the temperature of the water bath heating is 40-90 ℃.
4. The VOCs adsorbing material of claim 1, wherein the time of the reflux reaction is 3-5 hours.
5. The high-efficiency VOCs catalytic material is characterized in that the adsorbing material is prepared by the following method:
vacuum-dried nano TiO with the particle size of 5-10 nm2Adding the particles into toluene to obtain nano TiO2Adding 1-10% by mass, ultrasonically dispersing for 30min, dropwise adding 1-10% by mass of a long-chain alkyl silane coupling agent, heating in a water bath, stirring, performing reflux reaction, after the reaction is finished, adding the VOCs adsorbing material according to any one of claims 1-4, ultrasonically dispersing for 1-3 h, taking out the VOCs adsorbing material, respectively washing with deionized water and absolute ethyl alcohol, and performing vacuum drying to obtain the VOCs efficient catalytic material.
6. The VOCs high-efficiency catalytic material according to claim 5, wherein the temperature of the water bath heating is 40-90 ℃; the time of the reflux reaction is 3-5 h.
7. The VOCs high-efficiency catalytic material of claim 5, wherein the long-chain alkyl silane coupling agent is octyl triethoxysilane, dodecyl triethoxysilane or hexadecyl triethoxysilane.
8. A device for absorbing VOCs, said device being any one of 1) to 3) as follows:
1) the adsorption device comprises at least one VOCs adsorption unit;
2) the adsorption device comprises at least one VOCs catalytic unit;
3) the adsorption device comprises at least one VOCs adsorption unit and at least one VOCs catalytic unit;
the VOCs adsorption unit comprises a VOCs adsorption material of any one of claims 1-4;
the VOCs catalytic unit comprises the VOCs high-efficiency catalytic material of any one of claims 5-7 and ultraviolet light sources arranged at two ends of the VOCs high-efficiency catalytic material.
9. Use of the VOCs adsorbent material of any one of claims 1-4 or the VOCs high efficiency catalytic material of any one of claims 5-7 or the VOCs adsorbent device of claim 8 for treating VOCs.
10. A VOCs high-efficiency processing method is characterized by comprising the following steps: and (3) introducing the gas to be treated from one end of the VOCs absorption device of claim 8, and discharging the gas from the other end to finish the treatment of VOCs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188631.XA CN110813086A (en) | 2019-11-28 | 2019-11-28 | VOCs efficient treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188631.XA CN110813086A (en) | 2019-11-28 | 2019-11-28 | VOCs efficient treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110813086A true CN110813086A (en) | 2020-02-21 |
Family
ID=69542548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911188631.XA Pending CN110813086A (en) | 2019-11-28 | 2019-11-28 | VOCs efficient treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110813086A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080124635A1 (en) * | 2006-06-30 | 2008-05-29 | Minoru Nakamura | Toner, and image forming method, image forming apparatus, and process cartridge using the toner |
| CN103055340A (en) * | 2012-10-25 | 2013-04-24 | 郦宏 | Deodorization system of waste transfer station |
| CN105237770A (en) * | 2015-11-18 | 2016-01-13 | 江苏康缘药业股份有限公司 | Preparation method of molecularly imprinted polymer |
| CN109718848A (en) * | 2017-10-31 | 2019-05-07 | 中国石油化工股份有限公司 | Catalyst for treating waste gas and preparation method thereof and exhaust fume catalytic oxidation treatment method |
| CN109796766A (en) * | 2019-03-12 | 2019-05-24 | 李秀英 | A method of weather strip for automobile ultraviolet aging resistance silicon rubber is prepared with modified nano calcium carbonate-diatomite |
-
2019
- 2019-11-28 CN CN201911188631.XA patent/CN110813086A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080124635A1 (en) * | 2006-06-30 | 2008-05-29 | Minoru Nakamura | Toner, and image forming method, image forming apparatus, and process cartridge using the toner |
| CN103055340A (en) * | 2012-10-25 | 2013-04-24 | 郦宏 | Deodorization system of waste transfer station |
| CN105237770A (en) * | 2015-11-18 | 2016-01-13 | 江苏康缘药业股份有限公司 | Preparation method of molecularly imprinted polymer |
| CN109718848A (en) * | 2017-10-31 | 2019-05-07 | 中国石油化工股份有限公司 | Catalyst for treating waste gas and preparation method thereof and exhaust fume catalytic oxidation treatment method |
| CN109796766A (en) * | 2019-03-12 | 2019-05-24 | 李秀英 | A method of weather strip for automobile ultraviolet aging resistance silicon rubber is prepared with modified nano calcium carbonate-diatomite |
Non-Patent Citations (1)
| Title |
|---|
| 赵瑾等: "水处理中滤料应用的研究进展", 《净水技术》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108607511B (en) | A kind of industrial waste-gas purifier using waste-gas adsorbant | |
| Wang et al. | Rapid and efficient recovery of silver with nanoscale zerovalent iron supported on high performance activated carbon derived from straw biomass | |
| CN108671905B (en) | Preparation method of photocatalyst for sewage treatment | |
| Ali Rangkooy et al. | Efficiency evaluation of the photocatalytic degradation of zinc oxide nanoparticles immobilized on modified zeolites in the removal of styrene vapor from air | |
| CN104226240B (en) | Preparation method with catalysis/adsorbing material that kieselguhr is carrier | |
| CN110237808A (en) | A kind of silanization modification method of Y molecular sieve | |
| CN109569507B (en) | A kind of preparation method of hydrophobic ultrastable Y molecular sieve which can be regenerated rapidly by microwave | |
| CN110523398B (en) | A carbon nanosheet supported TiO2 molecularly imprinted material and its preparation method and application | |
| Ren et al. | The study on adsorption behavior of 2, 4-DCP in solution by biomass carbon modified with CTAB-KOH | |
| CN112516968A (en) | Preparation method of metal organic framework material loaded modified diatomite adsorbent | |
| CN106423059A (en) | Preparation method and application of graphene film composite activated aluminum oxide adsorbent adsorbing heavy metal ions and organic matter from waste water | |
| CN108786722B (en) | Composite adsorption material and preparation method thereof | |
| CN111186874B (en) | A kind of silylation reduction graphene oxide titanium dioxide composite material and preparation method and application thereof | |
| CN111672458A (en) | Flame-retardant honeycomb adsorbent and preparation method and application thereof | |
| CN101912729B (en) | Method for purifying organic polluted gas by utilizing glass ring covered with nanometer titanium dioxide thin film | |
| CN110813086A (en) | VOCs efficient treatment method | |
| CN101992001A (en) | Regeneration method and system of adsorption material | |
| CN101693193A (en) | Rare earth-Cu-Fe active carbon adsorbent, preparation method and application thereof | |
| CN103787430B (en) | Composite material for rapidly and deeply treating organo-chlorine pesticide wastewater | |
| CN118788097B (en) | Organic waste gas treatment process for spraying | |
| He et al. | Poly (ethyleneimine) functionalized organic-inorganic hybrid silica by hydrothermalassisted surface grafting method for removal of nickel (II) | |
| CN106268299A (en) | Method and the material for air purification of material for air purification is prepared in the catalysis oxidation of a kind of microporous medium | |
| CN109113837A (en) | A kind of catalysis treatment method of vehicle exhaust | |
| CN107694520A (en) | A kind of preparation method and applications of nitrating carbosphere adsorbent in situ | |
| CN109821408B (en) | A device and method for synergistic treatment of volatile organic compounds with ozone and catalytic oxidation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |
|
| RJ01 | Rejection of invention patent application after publication |