Low-temperature solidification, concentration and collection aerosol device and operation method thereof

An aerosol, low temperature technology, applied in measurement devices, sampling, instruments, etc., can solve problems such as unfavorable analysis and detection, insufficient separation of solution and air flow, etc.

Active Publication Date: 2021-05-11
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the mixing of excess steam and aerosol will dilute the content of the aerosol, which is not conducive to analysis and detection; and the separation of the solution formed by the condensation of the aerosol and the air flow is usually not thorough enough, and impact separation technology is needed

Method used

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  • Low-temperature solidification, concentration and collection aerosol device and operation method thereof
  • Low-temperature solidification, concentration and collection aerosol device and operation method thereof
  • Low-temperature solidification, concentration and collection aerosol device and operation method thereof

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Embodiment 1

[0022] like figure 1 As shown, a low-temperature solidification concentration collection aerosol device includes a gas deceleration cabin 2, a gas retention cabin 5, an aerosol acceleration cabin 9, a gas humid heat flow atomization cabin 12, a gas freezing cabin 15 and a collection cabin 18. The gas stagnation chamber 5 is located above the gas deceleration chamber 2, the aerosol acceleration chamber 9 is horizontally adjacent to the gas deceleration chamber 5, and the gas humid heat flow atomization chamber 12, the gas freezing chamber 15 and the collection chamber 18 are located below the aerosol acceleration chamber 9 in sequence. The gas deceleration chamber 2 is used to reduce the kinetic energy of the incoming aerosol-containing airflow, so that it slowly enters the gas retention chamber 5 and stays therein. The gas retention chamber 5 concentrates the retained aerosol and then enters the aerosol acceleration chamber 9, which is accelerated by heating up. Increase the i...

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Abstract

The invention discloses a low-temperature solidification, concentration and collection aerosol device and an operation method thereof. The low-temperature solidification, concentration and collection aerosol device comprises a gas deceleration cabin, a gas retention cabin, an aerosol acceleration cabin, a gas wet and hot flow atomization cabin, a gas freezing cabin and a collection cabin; folding channel collision plates which are mutually staggered are arranged in the gas deceleration cabin; the gas retention cabin is provided with a vibratable filter membrane covering an air vent; the aerosol acceleration cabin is of an interlayer structure, hot water flow circulation is arranged in an interlayer, and an air blower is arranged in a cavity; needle tube type atomizing nozzles are arranged on the upper side and an inlet of the gas wet and hot flow atomization cabin; and the gas freezing cabin circularly refrigerates, so that the concentrated aerosol-containing liquid drops are solidified into ice particles. Aerosol-containing ice particles and airflow are thoroughly separated through low-temperature solidification, the dilution effect of moisture on the aerosol is reduced by improving the mixing efficiency of the aerosol and spray vapor and controlling the vapor concentration, and concentrated aerosol is formed and is convenient to collect, analyze and detect.

Description

technical field [0001] The invention relates to the field of aerosol collection, in particular to a low-temperature solidification concentration collection aerosol device and an operating method thereof. Background technique [0002] Air pollutants can be divided into gaseous pollutants and aerosol state pollutants according to their state of existence. Aerosol pollutants refer to pollutant particles with an aerodynamic equivalent diameter of about 0.001-100 μm formed by solid particles, liquid particles or their combined particles dispersed and suspended in a gas medium. The particle itself is a kind of pollutant, and it is also the carrier of heavy metals, polycyclic aromatic hydrocarbons and other toxic substances. It has potential hazards and needs to be collected, detected and analyzed. [0003] Existing aerosol collection methods include membrane collection method, impact fractional sampling method, steam jet collection technology and so on. CN101315314A discloses a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/40G01N1/44G01N1/42
CPCG01N1/4005G01N1/44G01N1/42
Inventor 李佩儒丁宇刘佳李杰张佳严陆天枢李雨微杨淋玉赵兴强
Owner NANJING UNIV OF INFORMATION SCI & TECH
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