CN103212349B - Sublimation-desublimation-method nanometer aerosol generation system and application method and application - Google Patents

Sublimation-desublimation-method nanometer aerosol generation system and application method and application Download PDF

Info

Publication number
CN103212349B
CN103212349B CN201310153696.7A CN201310153696A CN103212349B CN 103212349 B CN103212349 B CN 103212349B CN 201310153696 A CN201310153696 A CN 201310153696A CN 103212349 B CN103212349 B CN 103212349B
Authority
CN
China
Prior art keywords
gas circuit
aerosol
carrier gas
sublimation
spinner flowmeter
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.)
Active
Application number
CN201310153696.7A
Other languages
Chinese (zh)
Other versions
CN103212349A (en
Inventor
蒋靖坤
何正旭
麦华俊
郝吉明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsinghua University
Original Assignee
Tsinghua University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tsinghua University filed Critical Tsinghua University
Priority to CN201310153696.7A priority Critical patent/CN103212349B/en
Publication of CN103212349A publication Critical patent/CN103212349A/en
Application granted granted Critical
Publication of CN103212349B publication Critical patent/CN103212349B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention belongs to the technical field of environment aerosol, and particularly relates to a sublimation-desublimation-method nanometer aerosol generation system. The system mainly comprises an intake pipeline, a carrier gas circuit (solid sublimation), a cooling gas circuit and a combination gas circuit (steam desublimation), wherein the gas circuits are all completely sealed; the intake gas is divided into carrier gas and cooling gas through an entry tee joint; and the carrier gas circuit mainly comprises a valve, a flowmeter and a tubular resistance furnace. The system can be used for generating solid-state nanometer aerosol including sodium chloride and silver; the solid is sublimed into steam in the resistance furnace and then flows out with the carrier gas, and is mixed with the cooling gas circuit through a mixer downstream; and the average geometrical particle size range of the aerosol generated by steam desublimation is 1-100nm. The system has high working stability, and the average geometrical particle size range of the aerosol generated after 3 hours of continuous operation is within 2%. According to the system, the solvent is not needed, and the purity of the aerosol is high. The system is suitable for instrument calibration, aerosol characteristic research and nanometer material synthesis.

Description

A kind of Sublimation-desublimnanometerhod nanometerhod aerosol generation system and using method thereof and application
Technical field
The invention belongs to environmental aerosols technical field, particularly a kind of Sublimation-desublimnanometerhod nanometerhod aerosol generation system and using method thereof and application.
Background technology
Aerosol generation systems can be applied to the field such as particle instrumental correction and nanometer aerosol characteristic research.Current most domestic aerosol generation systems, all for bio-pharmaceuticals, medical health field, only has minority to be applied to environmental area.In addition, these systems mainly produce the aerosol that particle diameter is submicron order, are not suitable for nanometer aerosol instrumental correction and related science research.As Chinese invention patent monodisperse aerosol generator (publication number CN101352661A) and bent capillary tube aerosol generator (publication number CN101610805A) make use of the aerosol that principle that capillary tube and cloud condense generates submicron order respectively.
Existing aerosol generation systems structure is comparatively complicated, adds the operation easier of system.Generation systems as Chinese invention patent (publication number CN1974387A) is made up of three parts, and regulating parameter is more, is not easy to use operation.In addition, the above-mentioned patent mentioned and other Chinese patent as sublimating and condensing method generate submicron order aerosol (publication number CN101284220A), aerosol generation systems (publication number CN102069046A) all adopts liquid phase spray-on process to generate aerosol.Impurity in solvent can reduce the aerocolloidal purity of final generation, and simultaneously in system operation, the volatilization of solvent can impact the aerocolloidal stability of generation.
Summary of the invention
Not enough for prior art, the invention provides a kind of Sublimation-desublimnanometerhod nanometerhod aerosol generation system and using method thereof and application.
A kind of Sublimation-desublimnanometerhod nanometerhod aerosol generation system, its entrance point threeway by pipeline respectively with air inlet pipeline, carrier gas gas circuit valve with cool gas circuit valve and be connected, carrier gas gas circuit valve door is connected with carrier gas gas circuit spinner flowmeter entrance by pipeline, the outlet of carrier gas gas circuit spinner flowmeter is connected with the quartz ampoule entrance of tube type resistance furnace by entrance point metal joint, quartz ampoule outlet is connected with port of export threeway by port of export metal joint, corundum boat being set in the quartz ampoule of described tube type resistance furnace, producing aerocolloidal solid for placing;
Cooling gas circuit valve is connected with cooling gas circuit spinner flowmeter entrance by pipeline;
The quartz ampoule outlet of the outlet of cooling gas circuit spinner flowmeter, tube type resistance furnace is connected with port of export threeway respectively with mixer entrance;
In described system, between each several part with pipeline, sealing is connected.
The interface size of described entrance point threeway, carrier gas gas circuit valve and carrier gas gas circuit spinner flowmeter is 3/8 inch.
The range of flow of described carrier gas gas circuit spinner survey is 0.02Lmin -1~ 6Lmin -1.
The range of flow of the cooling gas circuit spinner survey in described cooling gas circuit is 2Lmin -1~ 30Lmin -1.
The external diameter of described blender is 3/8 inch, and length is 1.75 inches, and wall thickness is 0.065 inch, and hole diameter is 0.2 inch, and is provided with chamfering, to ensure steady air current; The range of flow that described blender is suitable for is 5Lmin -1~ 30Lmin -1.
A using method for Sublimation-desublimnanometerhod nanometerhod aerosol generation system, by the temperature that changes in tube type resistance furnace and regulate carrier gas flux and cooling gas flow, regulates generated aerocolloidal domain size distribution.
An application for Sublimation-desublimnanometerhod nanometerhod aerosol generation system, described system is for the preparation of solid nano aerosol.
Described solid nano aerosol is salt or simple substance.
Described salt is sodium chloride, and described simple substance is silver.
Prepared aerosol geometric mean diameter is 1nm ~ 100nm.
Beneficial effect of the present invention is:
What obtained is nanometer aerosol, and its geometric mean diameter is within the scope of 1 ~ 100nm.The method obtain for polydispersed aerosol, minimum grain size can reach 0.6nm, maximum can to 400nm.Utilize sublimating and condensing method to produce aerosol not need to adopt solvent, effectively prevent solvent impurity to the impact generating aerosol purity, it also avoid the impact of solvent volatilization on system works stability.Native system has good job stability, and the aerosol geometric mean diameter fluctuation running generation in continuous 3 hours is no more than 2%, and total number density fluctuation is not higher than 6%.In addition, this system features in convenient, by changing temperature, carrier gas flux and the cooling gas circuit just aerocolloidal domain size distribution of adjustable generation in resistance furnace; System all have employed cutting ferrule and connects in each pipeline connects, and adopts rubber ring to seal, effectively ensure that the air-tightness of system in the junction of quartz ampoule and metal joint.
Accompanying drawing explanation
Fig. 1 is present system apparatus structure schematic diagram;
Fig. 2 is the embodiment of the present invention 1 mixer structure size design schematic diagram;
Number in the figure: 1-air inlet pipeline; The threeway of 2-entrance point; 3-carrier gas gas circuit valve; 4-carrier gas gas circuit spinner flowmeter; 5-entrance point metal joint; 6-quartz ampoule; 7-corundum boat; 8-tube type resistance furnace; 9-port of export metal joint; 10-cools gas circuit valve; 11-cools gas circuit spinner flowmeter; The threeway of the 12-port of export; 13-blender.
Detailed description of the invention
The invention provides a kind of Sublimation-desublimnanometerhod nanometerhod aerosol generation system, below in conjunction with the drawings and specific embodiments, the present invention will be further described.
A kind of Sublimation-desublimnanometerhod nanometerhod aerosol generation system, its entrance point threeway 2 by pipeline respectively with air inlet pipeline 1, carrier gas gas circuit valve 3 with cool gas circuit valve 10 and be connected, carrier gas gas circuit valve 3 is connected with carrier gas gas circuit spinner flowmeter 4 entrance by pipeline, carrier gas gas circuit spinner flowmeter 4 is exported and is connected with quartz ampoule 6 entrance of tube type resistance furnace 8 by entrance point metal joint 5, quartz ampoule 6 is exported and is connected with port of export threeway 12 by port of export metal joint 9, in the quartz ampoule 6 of described tube type resistance furnace 8, corundum boat 7 is set, for collecting aerosol solid;
Cooling gas circuit valve 10 is connected with cooling gas circuit spinner flowmeter 11 entrance by pipeline;
Cooling gas circuit spinner flowmeter 11 exports, the quartz ampoule 6 of tube type resistance furnace 8 exports and is connected with port of export threeway 12 respectively with blender 13 entrance;
In described system, between each several part with pipeline, sealing is connected.
Described entrance point threeway 2, carrier gas gas circuit valve 3 are 3/8 inch with the interface size of carrier gas gas circuit spinner flowmeter 4.
The range of flow that described carrier gas gas circuit spinner flowmeter 4 is measured is 0.02Lmin -1~ 6Lmin -1.
The range of flow that cooling gas circuit spinner flowmeter 11 in described cooling gas circuit is measured is 2Lmin -1~ 30Lmin -1.
The external diameter of described blender 13 is 3/8 inch, and length is 1.75 inches, and wall thickness is 0.065 inch, and hole diameter is 0.2 inch, and is provided with chamfering, to ensure steady air current; The range of flow that described blender 13 is suitable for is 5Lmin -1~ 30Lmin -1.
A using method for Sublimation-desublimnanometerhod nanometerhod aerosol generation system, by the temperature that changes in tube type resistance furnace 8 and regulate carrier gas flux and cooling gas flow, regulates generated aerocolloidal domain size distribution.
An application for Sublimation-desublimnanometerhod nanometerhod aerosol generation system, described system is for the preparation of solid nano aerosol.
Described solid nano aerosol is salt or simple substance.
Described salt is sodium chloride, and described simple substance is silver.
Prepared aerosol geometric mean diameter is 1nm ~ 100nm.
This system is formed with cooling gas circuit primarily of tube type resistance furnace, carrier gas gas circuit.The compressed air of clean dried enters carrier gas gas circuit and cooling gas circuit by air inlet pipeline 1 through entrance point threeway 2 shunting, the uninterrupted of carrier gas gas circuit is carried out respectively regulating by carrier gas gas circuit valve 3 and carrier gas gas circuit spinner flowmeter 4 and measures, and the uninterrupted of cooling gas circuit carries out respectively regulating by cooling gas circuit valve 10 with cooling gas circuit spinner flowmeter 11 and measures.Carrier gas enters entrance point metal joint 5 after carrier gas gas circuit spinner flowmeter 4, entrance point metal joint 5 is connected with the entrance point of quartz ampoule 6 in tube type resistance furnace 8, and adopt rubber ring to seal junction, ensure that air-tightness and the job stability of system.Be placed in the corundum boat 7 in interior quartz ampoule 6 for generation of aerocolloidal solid (as salt, simple substance etc.).In tube type resistance furnace 8, the solid sublimation of heating becomes gaseous molecular, and enters into downstream with carrier gas.Port of export metal joint 9 is connected with quartz ampoule 6 port of export, and the same rubber ring that uses seals.High temperature carrier gas is through port of export metal joint 9 and metallic conduit laggard inlet/outlet end threeway 12, and converge with refrigerating gas, blender 13 can realize the abundant mixing of high temperature carrier gas and refrigerating gas.The nanoparticles that gaseous molecular simultaneously in gas circuit is sublimated needed for formation under refrigerating gas effect.
Embodiment 1
Fig. 1 is present system apparatus structure schematic diagram.The compressed air of clean dried enters by air inlet pipeline 1 the entrance point threeway 2 that interface is 3/8 inch, splits into carrier gas gas circuit and cooling gas circuit.Cutting ferrule is all used to be connected between pipeline with threeway, to ensure gas circuit sealing.Carrier gas gas circuit caliber is 3/8 inch, and the uninterrupted of gas circuit is carried out respectively regulating by carrier gas gas circuit valve 3 and carrier gas gas circuit spinner flowmeter 4 and measures, and the measurement category of carrier gas gas circuit spinner flowmeter 4 is 0.02Lmin -1~ 6Lmin -1; The uninterrupted of cooling gas circuit carries out respectively regulating by cooling gas circuit valve 10 with cooling gas circuit spinner flowmeter 11 and measures, and the measurement category of cooling gas circuit spinner flowmeter 11 is 2Lmin -1~ 30Lmin -1.Carrier gas enters entrance point metal joint 5 after carrier gas gas circuit spinner flowmeter 4, entrance point metal joint 5 is connected with the entrance point of quartz ampoule 6 in tube type resistance furnace 8, and adopt rubber ring to seal junction, ensure that air-tightness and the job stability of system.
Quartz ampoule 6 pipe range in tube type resistance furnace 8 is 1.00m, and internal-and external diameter is respectively 36mm and 41mm.Be placed on for generation of aerocolloidal solid (as salt, simple substance etc.) in the corundum boat 7 in quartz ampoule 6.Corundum boat length 10cm, wall thickness is 3mm.The adjustable position of corundum boat 7 in tube type resistance furnace 8 of steel ruler can be utilized, thus change the aerocolloidal domain size distribution of generation.Solid carries out heating sublimation at resistance furnace and becomes gaseous molecular, and enters into downstream with carrier gas.Regulate the temperature in tube type resistance furnace 8 can change equally and generate aerocolloidal domain size distribution, the temperature control error of resistance in-furnace temperature is ± 1 DEG C, when in-furnace temperature is increased to 780 DEG C from 650 DEG C, the sodium chloride aerosol geometric mean diameter of generation increases to 83.9nm from 22.8nm.
Port of export metal joint 9 is connected with quartz ampoule 6 port of export, and the same rubber ring that uses seals.High temperature carrier gas enters into the port of export threeway 12 in downstream through metal joint and metallic conduit, converges with refrigerating gas.Port of export threeway 12 caliber is standard size 3/8 inch.In order to make high temperature carrier gas fully mix with refrigerating gas better, be provided with blender 13 in port of export threeway 12 downstream.The operation principle of blender 13 is: the aperture increasing a specific dimensions in the duct, causes interference to air-flow, forms turbulent flow, thus realizes the abundant mixing of gas fast.Blender external diameter in present system is 3/8 inch, and wall thickness is 0.065 inch, and hole diameter is 0.2 inch, and the range of flow be suitable for is 5Lmin -1~ 30Lmin -1.Blender 13 aperture place is provided with chamfering, to ensure steady air current.In the process that high temperature carrier gas mixes with refrigerating gas, heat the nano-scale particle thing that the gaseous molecular generated is sublimated needed for formation under cooling effect.
Increase carrier gas flux keeps constant can the increase of refrigerating gas to generate aerocolloidal concentration, when carrier gas flux is from 1Lmin simultaneously -1be increased to 2.33Lmin -1time, generate aerosol Particle density from ~ 10 7individual cm -3increase to ~ 10 8individual cm -3, and geometric mean diameter does not have significant change.

Claims (10)

1. a Sublimation-desublimnanometerhod nanometerhod aerosol generation system, it is characterized in that: entrance point threeway (2) by pipeline respectively with air inlet pipeline (1), carrier gas gas circuit valve (3) is connected with cooling gas circuit valve (10), carrier gas gas circuit valve (3) is connected with carrier gas gas circuit spinner flowmeter (4) entrance by pipeline, carrier gas gas circuit spinner flowmeter (4) outlet is connected with quartz ampoule (6) entrance of tube type resistance furnace (8) by entrance point metal joint (5), quartz ampoule (6) outlet is connected with port of export threeway (12) by port of export metal joint (9), in the quartz ampoule (6) of described tube type resistance furnace (8), corundum boat (7) is set, aerocolloidal solid is produced for placing,
Cooling gas circuit valve (10) is connected with cooling gas circuit spinner flowmeter (11) entrance by pipeline;
Quartz ampoule (6) outlet of cooling gas circuit spinner flowmeter (11) outlet, tube type resistance furnace (8) is connected with port of export threeway (12) respectively with blender (13) entrance;
In described system, between each several part with pipeline, sealing is connected.
2. system according to claim 1, is characterized in that: described entrance point threeway (2), carrier gas gas circuit valve (3) are 3/8 inch with the interface size of carrier gas gas circuit spinner flowmeter (4).
3. system according to claim 1, is characterized in that: the range of flow that described carrier gas gas circuit spinner flowmeter (4) is measured is 0.02Lmin -1~ 6Lmin -1.
4. system according to claim 1, is characterized in that: the range of flow that the cooling gas circuit spinner flowmeter (11) in described cooling gas circuit is measured is 2Lmin -1~ 30Lmin -1.
5. system according to claim 1, is characterized in that: the external diameter of described blender (13) is 3/8 inch, and length is 1.75 inches, and wall thickness is 0.065 inch, and hole diameter is 0.2 inch, and is provided with chamfering, to ensure steady air current; The range of flow that described blender (13) is suitable for is 5Lmin -1~ 30Lmin -1.
6. the using method of a Sublimation-desublimnanometerhod nanometerhod aerosol generation system as claimed in claim 1, it is characterized in that: by the temperature that changes in tube type resistance furnace (8) and regulate carrier gas flux and cooling gas flow, regulate generated aerocolloidal domain size distribution.
7. an application for Sublimation-desublimnanometerhod nanometerhod aerosol generation system as claimed in claim 1, is characterized in that: described system is for the preparation of solid nano aerosol.
8. application according to claim 7, is characterized in that: described solid nano aerosol is salt or simple substance.
9. application according to claim 8, is characterized in that: described salt is sodium chloride, and described simple substance is silver.
10. application according to claim 7, is characterized in that: prepared aerosol geometric mean diameter is 1nm ~ 100nm.
CN201310153696.7A 2013-04-27 2013-04-27 Sublimation-desublimation-method nanometer aerosol generation system and application method and application Active CN103212349B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310153696.7A CN103212349B (en) 2013-04-27 2013-04-27 Sublimation-desublimation-method nanometer aerosol generation system and application method and application

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310153696.7A CN103212349B (en) 2013-04-27 2013-04-27 Sublimation-desublimation-method nanometer aerosol generation system and application method and application

Publications (2)

Publication Number Publication Date
CN103212349A CN103212349A (en) 2013-07-24
CN103212349B true CN103212349B (en) 2015-02-18

Family

ID=48810702

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310153696.7A Active CN103212349B (en) 2013-04-27 2013-04-27 Sublimation-desublimation-method nanometer aerosol generation system and application method and application

Country Status (1)

Country Link
CN (1) CN103212349B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116510513A (en) 2018-04-13 2023-08-01 江苏新世纪江南环保股份有限公司 Oxidation method and device for ammonia desulfurization solution

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101284220A (en) * 2008-06-03 2008-10-15 清华大学 Quasi-monodispersed submicron aerosol generating device using vaporization condensation process
CN101352661A (en) * 2008-09-18 2009-01-28 中国建筑科学研究院 Monodisperse aerosol generator
CN102036724A (en) * 2008-05-19 2011-04-27 赢创德固赛有限公司 Process for the phase transformation of substances

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006200755B2 (en) * 2005-07-11 2011-02-10 Cyclomedica Australia Pty Limited Improved process for the production of a radioactive aerosol

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102036724A (en) * 2008-05-19 2011-04-27 赢创德固赛有限公司 Process for the phase transformation of substances
CN101284220A (en) * 2008-06-03 2008-10-15 清华大学 Quasi-monodispersed submicron aerosol generating device using vaporization condensation process
CN101352661A (en) * 2008-09-18 2009-01-28 中国建筑科学研究院 Monodisperse aerosol generator

Also Published As

Publication number Publication date
CN103212349A (en) 2013-07-24

Similar Documents

Publication Publication Date Title
Suresh et al. Turbulent heat transfer and pressure drop characteristics of dilute water based Al2O3–Cu hybrid nanofluids
Dong et al. A novel coral-shaped Dy2O3 gas sensor for high sensitivity NH3 detection at room temperature
Suresh et al. Effect of Al2O3–Cu/water hybrid nanofluid in heat transfer
Yousefi et al. An experimental investigation on the effect of pH variation of MWCNT–H2O nanofluid on the efficiency of a flat-plate solar collector
Goudarzi et al. Experimental study on the effect of pH variation of nanofluids on the thermal efficiency of a solar collector with helical tube
Gu et al. Synthesis of CuO nanoflower and its application as a H 2 O 2 sensor
CN106680057B (en) A kind of nano-scale particle supersaturation growing apparatus and control method
Yu et al. Electrospun ZnO nanotubes and its gas sensing applications
WO2010139861A1 (en) Method and device for detecting aerosol particles
CN108872325A (en) One kind being based on SnSe2/SnO2Nitrogen dioxide gas sensor, preparation process and the application of hetero-junctions
An et al. Enhanced ethanol sensing properties of multiple networked Au-doped In2O3 nanotube sensors
CN104411634A (en) Method for production of titanium carbide microparticles
CN105036096B (en) A kind of method that utilization reacting gas vortex prepares high-purity boron nitride nano-tube
Wang et al. One-pot synthesis of hierarchical WO 3 hollow nanospheres and their gas sensing properties
CN105271281B (en) The preparation method of rare earth and alkaline earth hexaboride nano wire, nanometer rods and nanotube
CN103212349B (en) Sublimation-desublimation-method nanometer aerosol generation system and application method and application
CN103353411A (en) Quasi monodisperse nanometer aerosol generation system
Wang et al. Fast detection of alcohols by novel sea cucumber-like indium tungsten oxide
Farahbod et al. Empirical investigation of heating and kinematic performance of ZnO nano fluid in a heat pipe
CN104445200B (en) A kind of method preparing overlength silicon carbide nanometer line
CN107576361A (en) A kind of heavy caliber pipeline flow measurement device based on LDV
CN114888281A (en) Production method of spherical hafnium powder
Akhatov et al. Research on Thermophysical Properties of Nanoliquids Based on SiO 2 Nanoparticles for Use as a Heat-Transfer Medium in Solar-Thermal Converters
Meng et al. A fluorinated greenhouse gas sensor based on N-doped tin oxide materials
CHEN et al. Synthesis and gas sensitivity of In2O3/CdO composite

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant