CN108245995A - A kind of method of order mesoporous silica-base material efficient removal nanoparticles - Google Patents
A kind of method of order mesoporous silica-base material efficient removal nanoparticles Download PDFInfo
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- CN108245995A CN108245995A CN201810128790.XA CN201810128790A CN108245995A CN 108245995 A CN108245995 A CN 108245995A CN 201810128790 A CN201810128790 A CN 201810128790A CN 108245995 A CN108245995 A CN 108245995A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/02—Loose filtering material, e.g. loose fibres
- B01D39/06—Inorganic material, e.g. asbestos fibres, glass beads or fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
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Abstract
The present invention provides a kind of method of order mesoporous silica-base material efficient removal nanoparticles, belongs to environmental protection technical field.This method is by the way that a large amount of nanoparticles generated are passed through in granular bed filters, final efficient removal nanoparticles.There is the spheric granules of powdered order mesoporous silica-base material in granular bed filters for load.This method process conditions are simple, and raw material is cheap, and operability is strong, can be that the source of China's airborne fine particulate matter controls providing method foundation and experiment basis, have good social value and theory significance.
Description
Technical field
The present invention relates to environmental protection technical fields, particularly relate to a kind of order mesoporous silica-base material efficient removal nanometer
The method of grain object.
Background technology
In technical field of air pollution control, the nanoparticles in air are due to health, environment and society
Meeting economy, which causes, to be seriously affected and is widely noticed.Since nanoparticles grain size is very small, large specific surface area easily loads it
His poisonous and harmful substance, and blood circulation system can be penetrated, it is very harmful.Meanwhile nanoparticles derive from a wealth of sources, industry
Discharge, automotive emission, biomass combustion, culinary art etc. can all generate nanoparticles.Therefore, it is badly in need of a kind of efficient removal
The method of nanoparticles improves the air quality on our peripheries.
At present, many documents harm excessively in relation to the source of particulate matter, component and generation in atmospheric environment by discussion,
But it is also relatively fewer to the research of its removing method report, and research contents is primarily directed to the larger particulate matter of grain size, to endangering
The efficient removal of the nanoparticles of evil bigger does not have deep discussion also.Therefore, a kind of energy efficient removal nano particle is chosen
The filtering material of object and suitable research method are critically important.
In numerous porous materials, mesoporous material is important one kind.Order mesoporous silica-base material has and nano particle
The comparable meso-hole structure of object size, larger hole holds and specific surface area.It therefore, can efficient removal using order mesoporous silica-base material
Nanoparticles in air have good social value and theory significance.
Invention content
The technical problem to be solved in the present invention is to provide a kind of order mesoporous silica-base material efficient removal nanoparticles
Method, this method pass through change by the nanoparticles that the order mesoporous a large amount of grain sizes of silica-base material filtering and removing are 2-25nm
Experiment condition inquires into the filtering rule of order mesoporous silica-base material to nanoparticles, the change of size range of nanoparticles and
Its concentration is then detected by SMPS, final efficient removal nanoparticles.
This method is as follows：
(1) nanoparticles are generated by particle generator；
(2) powdered order mesoporous silica-base material is equably carried on spheric granules surface, is placed in Bed Filtration
In the filter bed of device；
(3) granular bed filters being passed through the nanoparticles that step (1) generates in step (2), remove nano particle
Object, by scanning electromobility particle size spectrometer (SMPS；Model 3938, TSI, Inc., Shoreview, MN, USA) inspection
Survey the change of size range and concentration of nanoparticles.
Wherein, the production method of nanoparticles to open particle generator, is adjusted by mass flowmenter in step (1)
Gas flow in particle generator；By adjusting DC voltage and replacing the wire of different-diameter, best nanometer is explored
Particulate matter formation condition.
Wire used is high-purity tungsten filament of diameter 0.2-0.6mm, DC voltage 1.69-1.99V, in particle generator
Gas flow is 2.25L/min.The particle caused by there are tungsten filament problem of aging become larger and tungsten filament fuse the phenomenon that,
New tungsten filament need to be regularly replaced, to ensure the stability and reliability of experiment.
The nanoparticles grain size generated in step (1) is 2-25nm.
The aperture size of order mesoporous silica-base material is 9.6-14.6nm in step (2)；Granular bed filters size is Φ
10mm × 30mm, resistance 100-150Pa.
The filter bed height in granular bed filters in step (2) is 12mm.
Order mesoporous silica-base material is equably carried on spheric granules surface in step (2), forms filtering material, spherical shape
Grain sphere diameter is 2-5mm, and filtering material quality is about 12mg.
Apparent filtration velocity when nanoparticles are passed through granular bed filters in step (3) is 0.2-1.5L/min；It crosses
The filter time (wherein, is passed through particle and is considered as inceptive filtering, remember 0h) for 0-6h, and the grain size that a nanoparticles are recorded per 3min becomes
Change range and concentration, record is once one group of data, and each filtration experiment counts 6 groups of data.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
In said program, particles generation is stablized, and sample preparation is simple for process, and loaded article is at low cost, and can efficiently take off
Except nanoparticles.
Specific embodiment
To make the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with specific implementation
Example is described in detail.
The present invention provides a kind of method of order mesoporous silica-base material efficient removal nanoparticles, and the method comprising the steps of
It is as follows：
(1) nanoparticles are generated by particle generator；
(2) powdered order mesoporous silica-base material is equably carried on spheric granules surface, is placed in Bed Filtration
In the filter bed of device；
(3) granular bed filters being passed through the nanoparticles that step (1) generates in step (2), remove nano particle
Object detects the change of size range and concentration of nanoparticles by scanning electromobility particle size spectrometer.
It is explained with reference to specific embodiment.
Embodiment 1：
Particle generator is opened, while is passed through the air of clean dry, the gas in generator is adjusted by mass flowmenter
Body flow, wire are high-purity tungsten filament of diameter 0.5mm, and DC voltage 1.79V, gas flow is 2.25L/ in generator
Min, the nanoparticles grain size of generation is in the range of 2-25nm, and the Particle number concentration of simple grain diameter is close to 106A/cm3, pass through
SMPS detects granule density.
The nanoparticles obtained in embodiment 1 are passed through into granular bed filters, the aperture size point of filtering material
It Wei not 9.6nm, 10.8nm, 14.6nm.Gas flow at filter inlet is 0.6L/min, and filter bed thickness is the item of 12mm
Under part, when filtering material aperture is 14.6nm, the removal efficiency to nanoparticles is 92.58%, and filtering material aperture is
During 10.8nm, the removal efficiency to nanoparticles is 90.82%, when filtering material aperture is 9.6nm, to nanoparticles
Removal efficiency is 89.16%.
Embodiment 2：
Other conditions are same as Example 1, and it is the orderly of 10.8nm to use aperture the difference lies in filtering material
Mesoporous silica-base material, the sphere diameter of filtering material is respectively 5mm, 3mm, 2mm, and other conditions and test condition are identical with 1.It has served as
When the sphere diameter of filter material material is 5mm, 3mm, 2mm, the removal efficiency to nanoparticles is respectively 85.85%, 92.23%,
95.81%.
Embodiment 3：
Other conditions are same as Example 1, and it is the orderly of 14.6nm to use aperture the difference lies in filtering material
Mesoporous silica-base material, the gas flow at filter inlet be respectively 1.5L/min, 1.0L/min, 0.6L/min, 0.4L/min,
0.2L/min, other conditions and test condition are identical with 1.Gas flow at filter inlet is 1.5L/min, 1.0L/
When min, 0.6L/min, 0.4L/min, 0.2L/min, the removal efficiency to nanoparticles is respectively 73.40%, 85.73%,
92.58%th, 96.94%, 99.26%.
Embodiment 4：
Other conditions are same as Example 1, and it is the orderly of 10.8nm to use aperture the difference lies in filtering material
Mesoporous silica-base material, the gas flow at filter inlet be respectively 1.5L/min, 1.0L/min, 0.6L/min, 0.4L/min,
0.2L/min, other conditions and test condition are identical with 1.Gas flow at filter inlet is 1.5L/min, 1.0L/
When min, 0.6L/min, 0.4L/min, 0.2L/min, the removal efficiency to nanoparticles is respectively 68.70%, 82.18%,
90.82%th, 95.97%, 98.87%.
Embodiment 5：
Other conditions are same as Example 1, and the difference lies in filtering materials to use orderly Jie that aperture is 9.6nm
Hole silica-base material, the gas flow at filter inlet be respectively 1.5L/min, 1.0L/min, 0.6L/min, 0.4L/min,
0.2L/min, other conditions and test condition are identical with 1.Gas flow at filter inlet is 1.5L/min, 1.0L/
When min, 0.6L/min, 0.4L/min, 0.2L/min, the removal efficiency to nanoparticles is respectively 67.00%, 81.52%,
89.16%th, 95.86%, 98.66%.
Embodiment 6：
Other conditions are same as Example 1, and it is the orderly of 10.8nm to use aperture the difference lies in filtering material
Mesoporous silica-base material, the gas flow at filter inlet are 0.2L/min, every two hours survey an exit concentration, during total filtering
Between for 6h, other conditions and test condition are identical with 1.During inceptive filtering, the removal efficiency of nanoparticles is 99.92%,
After filtering 2h, the removal efficiency of nanoparticles is 99.81%, and after filtering 4h, the removal efficiency of nanoparticles is
99.74%, after filtering 6h, the removal efficiency of nanoparticles is 99.46%.
Comparative example 1：
Other conditions are same as Example 1, and what it is the difference lies in materials'use is other materials such as activated carbon, Jie's micropore
Molecular sieve and small-bore mesopore molecular sieve, other conditions and test condition are identical with 1, removing of the activated carbon to nanoparticles
Efficiency is 83.25%, and Jie's micro porous molecular sieve is 88.49% to the removal efficiency of nanoparticles, small-bore mesopore molecular sieve pair
The removal efficiency of nanoparticles is 86.32%.The removal efficiency of nanoparticles is poor compared with Example 1.
By the comparison of embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5, embodiment 6 as it can be seen that when orderly
Mesoporous silica-base material aperture is 14.6nm, sphere diameter 2mm, and when filter inlet wind speed is 0.2L/min, nanoparticles take off
Except best results.It is higher to the removal efficiency of nanoparticles by the comparison of embodiment 1 as it can be seen that the aperture of filtering material is bigger,
Larger duct can accommodate more particles and enter, and have good adsorption effect.By the comparison of embodiment 2 as it can be seen that filter material
The sphere diameter of material is smaller, higher to the removal efficiency of nanoparticles since bulk density increases.By embodiment 3, embodiment 4, reality
The comparison of example 5 is applied as it can be seen that the gas flow at filter inlet is smaller, the residence time of particulate matter in the filter is longer, because
This is higher to the removal efficiency of nanoparticles.By the comparison of embodiment 6 as it can be seen that the time for being passed through nanoparticles is more long, mistake
The aperture of filter material material is gradually blocked, therefore removal efficiency is lower.But after filtering material works 6 hours, arresting efficiency still exists
More than 99%.
In conclusion order mesoporous silica-base material has the performance of efficient removal nanoparticles in the present invention.Particle
Generating process is simple and stablizes, and loaded article is at low cost, has good Research Prospects.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
- A kind of 1. method of order mesoporous silica-base material efficient removal nanoparticles, it is characterised in that：It is as follows including step：(1) nanoparticles are generated by particle generator；(2) powdered order mesoporous silica-base material is equably carried on spheric granules surface, is placed in granular bed filters In filter bed；(3) granular bed filters being passed through the nanoparticles that step (1) generates in step (2), remove nanoparticles, lead to Over-scan the change of size range and concentration of electromobility particle size spectrometer detection nanoparticles.
- 2. the method for order mesoporous silica-base material efficient removal nanoparticles according to claim 1, it is characterised in that： The production method of nanoparticles adjusts particle to open particle generator by mass flowmenter in the step (1) Gas flow in device；By adjusting DC voltage and replacing the wire of different-diameter, best nanoparticles life is explored Into condition.
- 3. the method for order mesoporous silica-base material efficient removal nanoparticles according to claim 2, it is characterised in that： The wire is high-purity tungsten filament of diameter 0.2-0.6mm, DC voltage 1.69-1.99V, gas flow in particle generator For 2.25L/min.
- 4. the method for order mesoporous silica-base material efficient removal nanoparticles according to claim 1, it is characterised in that： The nanoparticles grain size generated in the step (1) is 2-25nm.
- 5. the method for order mesoporous silica-base material efficient removal nanoparticles according to claim 1, it is characterised in that： The aperture size of order mesoporous silica-base material is 9.6-14.6nm in the step (2)；Granular bed filters size is Φ 10mm × 30mm, resistance 100-150Pa.
- 6. the method for order mesoporous silica-base material efficient removal nanoparticles according to claim 1, it is characterised in that： The filter bed height in granular bed filters in the step (2) is 12mm.
- 7. the method for order mesoporous silica-base material efficient removal nanoparticles according to claim 1, it is characterised in that： Order mesoporous silica-base material is equably carried on spheric granules surface in the step (2), forms filtering material, spheric granules ball Diameter is 2-5mm, and filtering material quality is 10-15mg.
- 8. the method for order mesoporous silica-base material efficient removal nanoparticles according to claim 1, it is characterised in that： Apparent filtration velocity when nanoparticles are passed through granular bed filters in the step (3) is 0.2-1.5L/min；During filtering Between for 0-6h, the change of size range and concentration of a nanoparticles are recorded per 3min, record is once one group of data, every time Filtration experiment counts 6 groups of data.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1647847A (en) * | 2004-11-22 | 2005-08-03 | 宁波大学 | Granular bed gas purifying device and its method |
| CN102935323A (en) * | 2012-12-05 | 2013-02-20 | 苏州大学 | Gas absorption device |
| JP2013119784A (en) * | 2011-12-06 | 2013-06-17 | Toyota Industries Corp | Exhaust emission control device |
| CN103523748A (en) * | 2013-10-16 | 2014-01-22 | 苏州元泰自动化科技有限公司 | Nanoparticle preparation system and preparation method |
| CN104667699A (en) * | 2012-08-27 | 2015-06-03 | 深圳市疾病预防控制中心 | Application of nano silicon dioxide to adsorption of lead in atmosphere |
| CN105236427A (en) * | 2015-09-01 | 2016-01-13 | 郑州大学 | Nano-scale ordered mesoporous silicon dioxide spheres and preparation method of same |
| KR20170058121A (en) * | 2015-11-18 | 2017-05-26 | (주) 크린필텍 | High functional anti-biotic deodorization filter comprising silver nano-silica complex |
| CN106964217A (en) * | 2017-05-11 | 2017-07-21 | 北京科技大学 | A kind of adjustable continuous filtration system of moving bed stratum granulosum of thickness of filter bed |
| CN107353466A (en) * | 2017-05-31 | 2017-11-17 | 句容市恒鑫遮阳科技有限公司 | A kind of sound insulation Dust filtering window yarn woven fabric and preparation method thereof |
-
2018
- 2018-02-08 CN CN201810128790.XA patent/CN108245995A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1647847A (en) * | 2004-11-22 | 2005-08-03 | 宁波大学 | Granular bed gas purifying device and its method |
| JP2013119784A (en) * | 2011-12-06 | 2013-06-17 | Toyota Industries Corp | Exhaust emission control device |
| CN104667699A (en) * | 2012-08-27 | 2015-06-03 | 深圳市疾病预防控制中心 | Application of nano silicon dioxide to adsorption of lead in atmosphere |
| CN102935323A (en) * | 2012-12-05 | 2013-02-20 | 苏州大学 | Gas absorption device |
| CN103523748A (en) * | 2013-10-16 | 2014-01-22 | 苏州元泰自动化科技有限公司 | Nanoparticle preparation system and preparation method |
| CN105236427A (en) * | 2015-09-01 | 2016-01-13 | 郑州大学 | Nano-scale ordered mesoporous silicon dioxide spheres and preparation method of same |
| KR20170058121A (en) * | 2015-11-18 | 2017-05-26 | (주) 크린필텍 | High functional anti-biotic deodorization filter comprising silver nano-silica complex |
| CN106964217A (en) * | 2017-05-11 | 2017-07-21 | 北京科技大学 | A kind of adjustable continuous filtration system of moving bed stratum granulosum of thickness of filter bed |
| CN107353466A (en) * | 2017-05-31 | 2017-11-17 | 句容市恒鑫遮阳科技有限公司 | A kind of sound insulation Dust filtering window yarn woven fabric and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 李子宜 等: "大气颗粒物在多孔材料上的吸附特性分析", 《低温与特气》 * |
| 秦庆东 著: "《介孔硅材料吸附水中污染物技术与原理》", 30 September 2015, 东南大学出版社 * |
| 邢奕 等: "有序介孔材料过滤脱除纳米颗粒物", 《环境科学》 * |
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