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Aerosol particle matter size-based collection device and method

An aerosol particle and collection device technology, which is applied in sampling devices, analysis materials, instruments, etc., can solve the problems of high energy consumption, inability to guarantee work efficiency, and inability to popularize industrial applications in the electrostatic collection method, so as to improve the accuracy of experiments, Ensuring accuracy and saving energy

Active Publication Date: 2021-04-16
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the filter membrane collection method, because the size of the filter membrane is at the picometer level, its price is high, it is only suitable for laboratory scientific research, and cannot be popularized in industrial applications; the electrostatic collection method consumes too much energy and has pollution; the impact sampling separation method, The impact sampling separation method requires an impact sampling separator. The impact sampling separator needs to be customized, the price is high and the working efficiency cannot be guaranteed

Method used

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  • Aerosol particle matter size-based collection device and method
  • Aerosol particle matter size-based collection device and method
  • Aerosol particle matter size-based collection device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as figure 1 Shown, a kind of aerosol particle matter sub-size collection device, comprises,

[0041] The air intake pipe 1 is arranged horizontally, and the aerosol to be measured is introduced from the air intake pipe 1;

[0042] Such as figure 2 As shown, the dryer 2 is inclined to the plane, the dryer 2 is in a tubular structure, the lower end of the dryer 2 is connected with the air intake pipe 1, and the heating resistance wire 3 for drying the air is arranged inside the dryer 2, and the heating The resistance wire 3 is electrically connected to an external power supply, and the heating resistance wire 3 is arranged spirally around the inner wall of the dryer 2 in the dryer 2. According to the above-mentioned structure, the method of collecting the particles in the dryer 2 is: drying by shaking The device 2 makes the particles attached to the inner wall of the dryer 2 fall into the collection container; further, the inner wall of the dryer 2 is attached wit...

Embodiment 2

[0052] A method for collecting aerosol particles by size, the specific steps are as follows:

[0053] Step 1, the aerosol to be tested (including solid or liquid particles) is introduced into the dryer 2 from the inlet pipe 1;

[0054] Step 2: First, the dryer 2 is preheated for 10 seconds, and then the aerosol to be tested is introduced from the bottom of the dryer 2. The aerosol to be tested is heated by the heating resistance wire 3 to evaporate the water in the liquid particles, and the liquid particles condense after evaporation. Solid particles, the condensed solid particles are attached to the inner wall of the dryer 2, and the dried aerosol is discharged from the top of the dryer 2;

[0055] Step 3, the dried aerosol to be measured is introduced into the ionization device 5, and the ionization area 9 in the ionization device 5 ionizes the particles of the dry aerosol, so that some particles are positively charged, and the dry aerosol enters the particle screening area ...

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Abstract

The invention relates to the technical field of particulate matter collection, and discloses an aerosol particulate matter sub-size collection device and method, the aerosol particulate matter sub-size collection device comprises an air inlet pipe, a dryer, an ionization device, an air pump and an electrostatic field device which are connected in sequence;the ionization device comprises a box body; an ionization area for ionizing aerosol and a particle screening area for screening charged particles and uncharged particles in the aerosol are sequentially arranged in the box body, and the air pump is used for accelerating the charged particles, so that the charged particles can enter the deep part of an electrostatic field in the electrostatic field device; in the electrostatic field device, the charged particles can be distributed in the electrostatic field according to the particle mass and height through the electrostatic field, then the particles are collected through the collecting device, the particles in the air can be screened through the collecting device, and the detection efficiency of substance components of the particles in the air can be improved.

Description

technical field [0001] The invention relates to the technical field of particle collection, in particular to a particle separation device and a collection method for different sizes of aerosol particles. Background technique [0002] Aerosol particle size screening equipment is widely used in atmospheric monitoring and research. Therefore, it can be said that the particle size screening equipment for aerosol particles is an important equipment for the monitoring and research of atmospheric aerosols. Common methods for particle size screening of aerosol particles in the prior art include membrane collection method, electrostatic collection method, impact sampling separation method and the like. Among them, the filter membrane collection method, because the size of the filter membrane is at the picometer level, its price is high, it is only suitable for laboratory scientific research, and cannot be popularized in industrial applications; the electrostatic collection method co...

Claims

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Application Information

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IPC IPC(8): G01N1/22G01N1/44G01N15/00
Inventor 张佳严丁宇刘佳李杰李佩儒陆天枢李雨微杨淋玉赵兴强李玲玉
Owner NANJING UNIV OF INFORMATION SCI & TECH
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